10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

[ x ] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For The Fiscal Year Ended December 31, 2017

OR

[    ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number 1-3610

ARCONIC INC.

(Exact name of registrant as specified in its charter)

Delaware	25-0317820
(State of incorporation)	(I.R.S. Employer Identification No.)

390 Park Avenue, New York, New York 10022-4608

(Address of principal executive offices)     (Zip code)

Registrant’s telephone numbers:

Investor Relations------------— (212) 836-2758

Office of the Secretary-------—(212) 836-2732

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, par value $1.00 per share	New York Stock Exchange
$3.75 Cumulative Preferred Stock, par value $100.00 per share	NYSE American

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes✓  No .

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.  Yes    No ✓ .

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days.  Yes  ✓  No  .

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes ✓  No .

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. []

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer [✓]        Accelerated filer []    Non-accelerated filer [] (Do not check if a smaller reporting company)

Smaller reporting company []         Emerging growth company []

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [ ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange

Act). Yes   No ✓.

The aggregate market value of the outstanding common stock, other than shares held by persons who may be deemed affiliates of the registrant, as of the last business day of the registrant’s most recently completed second fiscal quarter was approximately $10 billion. As of February 16, 2018, there were 482,772,252 shares of common stock, par value $1.00 per share, of the registrant outstanding.

Documents incorporated by reference.

Part III of this Form 10-K incorporates by reference certain information from the registrant’s definitive Proxy Statement for its 2018 Annual Meeting of Shareholders to be filed pursuant to Regulation 14A (Proxy Statement).

TABLE OF CONTENTS

		Page(s)
Part I
Item 1.	Business	1
Item 1A.	Risk Factors	15
Item 1B.	Unresolved Staff Comments	27
Item 2.	Properties	27
Item 3.	Legal Proceedings	28
Item 4.	Mine Safety Disclosures	30
Part II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	31
Item 6.	Selected Financial Data	33
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	34
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	57
Item 8.	Financial Statements and Supplementary Data	57
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	113
Item 9A.	Controls and Procedures	113
Item 9B.	Other Information	113
Part III
Item 10.	Directors, Executive Officers and Corporate Governance	114
Item 11.	Executive Compensation	114
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	114
Item 13.	Certain Relationships and Related Transactions, and Director Independence	114
Item 14.	Principal Accounting Fees and Services	114
Part IV
Item 15.	Exhibits, Financial Statement Schedules	115
Item 16.	Form 10-K Summary	124
	Signatures	125

Note on Incorporation by Reference

In this Form 10-K, selected items of information and data are incorporated by reference to portions of the Proxy Statement. Unless otherwise provided herein, any reference in this report to disclosures in the Proxy Statement shall constitute incorporation by reference of only that specific disclosure into this Form 10-K.

PART I

Item 1. Business.

General

Arconic Inc. is a Delaware corporation with its principal office in New York, New York and the successor to Arconic Pennsylvania (as defined below) which was formed in 1888 and formerly known as Alcoa Inc. In this report, unless the context otherwise requires, “Arconic” or the “Company” means Arconic Inc., a Delaware corporation, and all subsidiaries consolidated for the purposes of its financial statements.

The Company’s Internet address is http://www.arconic.com. Arconic makes available free of charge on or through its website its annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practicable after the Company electronically files such material with, or furnishes it to, the Securities and Exchange Commission (SEC). The information on the Company’s Internet site is not a part of, or incorporated by reference in, this annual report on Form 10-K. The SEC maintains an Internet site that contains these reports at http://www.sec.gov.

Forward-Looking Statements

This report contains (and oral communications made by Arconic may contain) statements that relate to future events and expectations and, as such, constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include those containing such words as “anticipates,” “believes,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “guidance,” “intends,” “may,” “outlook,” “plans,” “projects,” “seeks,” “sees,” “should,” “targets,” “will,” “would,” or other words of similar meaning. All statements that reflect Arconic’s expectations, assumptions or projections about the future, other than statements of historical fact, are forward-looking statements, including, without limitation, forecasts relating to the growth of the aerospace, automotive, commercial transportation and other end markets; statements and guidance regarding future financial results or operating performance; statements about Arconic’s strategies, outlook, business and financial prospects; and statements regarding potential share gains. Forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties, and changes in circumstances that are difficult to predict. Although Arconic believes that the expectations reflected in any forward-looking statements are based on reasonable assumptions, it can give no assurance that these expectations will be attained and it is possible that actual results may differ materially from those indicated by these forward-looking statements due to a variety of risks and uncertainties.

For a discussion of some of the specific factors that may cause Arconic’s actual results to differ materially from those projected in any forward-looking statements, see the following sections of this report: Part I, Item 1A. (Risk Factors), Part II, Item 7. (Management’s Discussion and Analysis of Financial Condition and Results of Operations), including the disclosures under Segment Information and Critical Accounting Policies and Estimates, and Note K and the Derivatives Section of Note U to the Consolidated Financial Statements in Part II, Item 8. (Financial Statements and Supplementary Data). Market projections are subject to the risks discussed in this report and other risks in the market. Arconic disclaims any intention or obligation to update publicly any forward-looking statements, whether in response to new information, future events or otherwise, except as required by applicable law.

Overview

Arconic is a global leader in lightweight metals engineering and manufacturing. Arconic’s innovative, multi-material products, which include aluminum, titanium, and nickel, are used worldwide in aerospace, automotive, commercial transportation, packaging, building and construction, oil and gas, defense, consumer electronics, and industrial applications.

Arconic is a global company operating in 18 countries. Based upon the country where the point of sale occurred, the United States and Europe generated 63% and 26%, respectively, of Arconic’s sales in 2017. In addition, Arconic has operating activities in Brazil, Canada, China, Japan, and Russia, among others. Governmental policies, laws and regulations, and other economic factors, including inflation and fluctuations in foreign currency exchange rates and interest rates, affect the results of operations in these countries.

Arconic’s operations consist of three worldwide reportable segments: Engineered Products and Solutions, Global Rolled Products and Transportation and Construction Solutions.

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Background

Arconic Inc. Reincorporation

On December 31, 2017 (the “Effective Date”), Arconic Inc., a Pennsylvania corporation (“Arconic Pennsylvania” or, prior to the Reincorporation (as defined below), the “Company”), effected the change of the Company’s jurisdiction of incorporation from Pennsylvania to Delaware (the “Reincorporation”) by merging (the “Reincorporation Merger”) with a direct wholly owned Delaware subsidiary, Arconic (in this section, “Arconic Delaware” or, following the Reincorporation, the “Company”), pursuant to an Agreement and Plan of Merger (the “Reincorporation Merger Agreement”), dated as of October 12, 2017, by and between Arconic Pennsylvania and Arconic Delaware.  Arconic Pennsylvania shareholders approved the Reincorporation Merger to effect the Reincorporation at a Special Meeting of Shareholders held on November 30, 2017. As a result of the Reincorporation, (i) Arconic Pennsylvania has ceased to exist, (ii) Arconic Delaware automatically inherited the reporting obligations of Arconic Pennsylvania under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and (iii) Arconic Delaware is deemed to be the successor issuer to Arconic Pennsylvania.

The common stock, par value $1.00 per share, of Arconic Pennsylvania (the “Arconic Pennsylvania Common Stock”) was listed for trading on the New York Stock Exchange and traded under the symbol “ARNC.” As of the Effective Date, this symbol, without interruption, represents shares of common stock, par value $1.00 per share, of Arconic Delaware (the “Arconic Delaware Common Stock”). There was no change in the Exchange Act File Number assigned by the SEC as a result of the Reincorporation.

As of the Effective Date, the rights of the Company’s stockholders began to be governed by the General Corporation Law of the State of Delaware, the Certificate of Incorporation of Arconic Delaware (the “Delaware Certificate”) and the Bylaws of Arconic Delaware (the “Delaware Bylaws”).

Other than the change in corporate domicile, the Reincorporation did not result in any change in the business, physical location, management, financial condition or number of authorized shares of the Company, nor did it result in any change in location of its current employees, including management.  On the Effective Date, (i) the directors and officers of Arconic Pennsylvania prior to the Reincorporation continued as the directors and officers of Arconic Delaware after the Reincorporation, (ii) each outstanding share of Arconic Pennsylvania Common Stock was automatically converted into one share of Arconic Delaware Common Stock, (iii) each outstanding share of Serial Preferred Stock, par value $100 per share, of Arconic Pennsylvania (the “Arconic Pennsylvania Preferred Stock”) was automatically converted into one share of Serial Preferred Stock, par value $100 per share, of Arconic Delaware (the “Arconic Delaware Preferred Stock”) and (iv) all of Arconic Pennsylvania’s employee benefit and compensation plans immediately prior to the Reincorporation were continued by Arconic Delaware, and each outstanding equity award and notional share unit relating to shares of Arconic Pennsylvania Common Stock was converted into an equity award or notional share unit, as applicable, relating to an equivalent number of shares of Arconic Delaware Common Stock on the same terms and subject to the same conditions. Beginning at the effective time of the Reincorporation, each certificate representing Arconic Pennsylvania Common Stock or Arconic Pennsylvania Preferred Stock was deemed for all corporate purposes to evidence ownership of Arconic Delaware Common Stock or Arconic Delaware Preferred Stock, as applicable. The Company’s stockholders may, but are not required to, exchange their stock certificates as a result of the Reincorporation.

The foregoing descriptions of the Arconic Delaware Common Stock, the Arconic Delaware Preferred Stock, the Delaware Certificate and the Delaware Bylaws are qualified in their entirety by the full text of the Delaware Certificate and the Delaware Bylaws, which are filed as Exhibits 3(a) and 3(b), respectively, to this report.

Alcoa Corporation Separation Transaction

On November 1, 2016, Alcoa Inc. completed the separation of its business into two independent, publicly traded companies (the “Separation”) – Alcoa Corporation and Arconic Inc. (the new name for Alcoa Inc.). Following the Separation, Alcoa Corporation holds the Alumina and Primary Metals segments, the rolling mill at the Warrick, Indiana operations and the 25.1% stake in the Ma’aden Rolling Company in Saudi Arabia previously held by the Company. The Company retained the Global Rolled Products (other than the rolling mill at the Warrick, Indiana operations and the 25.1% ownership stake in the Ma’aden Rolling Company), Engineered Products and Solutions and Transportation and Construction Solutions segments.

The Separation was effected by a pro rata distribution of 80.1% of the outstanding shares of Alcoa Corporation common stock to the Company’s shareholders (the “Distribution”). The Company’s shareholders of record as of the close of business on October 20, 2016 (the “Record Date”) received one share of Alcoa Corporation common stock for every three shares of the Company’s common stock held as of the Record Date. The Company did not issue fractional shares of Alcoa Corporation common stock in the Distribution. Instead, each shareholder otherwise entitled to receive a fractional share of Alcoa Corporation common stock received cash in lieu of fractional shares.

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The Company distributed 146,159,428 shares of common stock of Alcoa Corporation in the Distribution and retained 36,311,767 shares, or approximately 19.9%, of the common stock of Alcoa Corporation immediately following the Distribution. As a result of the Distribution, Alcoa Corporation became an independent public company trading under the symbol “AA” on the New York Stock Exchange, and the Company trades under the symbol “ARNC” on the New York Stock Exchange.

During 2017, the Company disposed of its retained interest in Alcoa Corporation. In February 2017, the Company sold 23,353,000 shares of Alcoa Corporation stock at $38.03 per share, which resulted in cash proceeds of $888 million and a gain of $351 million. In April and May 2017, the Company acquired a portion of its outstanding notes held by two investment banks (the “Investment Banks”) in exchange for cash and the Company’s remaining 12,958,767 shares (valued at $35.91 per share) in Alcoa Corporation stock (the “Debt-for-Equity Exchange”) and recorded a gain of $167 million. The gains of $351 million and $167 million associated with the disposition of the Alcoa Corporation shares were recorded in Other Income, Net in the accompanying Statement of Consolidated Operations in Part II, Item 8 (Financial Statements and Supplementary Data).

On October 31, 2016, in connection with the Separation and the Distribution, Arconic entered into several agreements with Alcoa Corporation or its subsidiaries that govern the relationship of the parties following the Distribution, including the following: Separation and Distribution Agreement, Transition Services Agreement, Tax Matters Agreement, Employee Matters Agreement, certain Patent, Know-How, Trade Secret License and Trademark License Agreements, Toll Processing and Services Agreement, Master Agreement for the Supply of Primary Aluminum, Massena Lease and Operations Agreement, Fusina Lease and Operations Agreement, and Stockholder and Registration Rights Agreement.

Description of the Business

Information describing Arconic’s businesses can be found on the indicated pages of this report:

Item	Page(s)
Discussion of Recent Business Developments:
Management’s Discussion and Analysis of Financial Condition and Results of Operations:
Overview—Results of Operations (Earnings Summary)	34
Notes to Consolidated Financial Statements:
Note C. Separation Transaction and Discontinued Operations	74
Note D. Restructuring and Other Charges	76
Note E. Goodwill and Other Intangible Assets	78
Note F. Acquisitions and Divestitures	79
Note K. Contingencies and Commitments	84
Note Q. Income Taxes	96
Segment Information:
Business Descriptions, Principal Products, Principal Markets, Methods of Distribution, Seasonality and Dependence Upon Customers:
Engineered Products and Solutions	40
Global Rolled Products	41
Transportation and Construction Solutions	42
Financial Information about Segments and Financial Information about Geographic Areas:
Note N. Segment and Geographic Area Information	88

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Major Product Revenues

Products that contributed 10% or more to consolidated revenues for the years ended December 31, 2017, 2016 and 2015, were:

	For the Years Ended December 31,
	2017		2016		2015
Flat-rolled aluminum	39	%	39	%	42	%
Fastening systems and rings	16	%	17	%	18	%
Investment castings	15	%	15	%	15	%
Other extruded and forged products	12	%	12	%	11	%

See Note Nto the Consolidated Financial Statements in Part II, Item 8. (Financial Statements and Supplementary Data) for operating results of the Company’s reportable segments. Arconic has no customers that account for more than 10% of its consolidated revenues. However, certain of the Company’s businesses are dependent upon a few significant customers. The loss of any such significant customer could have a material adverse effect on such businesses.

Engineered Products and Solutions

Arconic’s Engineered Products and Solutions segment (“EP&S”) develops and manufactures high performance products mainly for the aerospace (commercial and defense), commercial transportation, and power generation end markets. Such products include fastening systems (titanium, steel, and nickel superalloys); seamless rolled rings (mostly nickel superalloys); investment castings (nickel superalloys, titanium, and aluminum), including airfoils and structural components; forged airframe and jet engine components (nickel superalloys, titanium, aluminum), including bulkheads, disks and shafts; extruded airframe components (aluminum); and various other forged and extruded metallic components for the oil and gas, industrial products, automotive, and land and sea defense end markets.

Throughout 2017, EP&S was comprised of four business units: Arconic Power and Propulsion; Arconic Fastening Systems and Rings; Arconic Forgings and Extrusions; and Arconic Titanium and Engineered Products.

Arconic Power and Propulsion (APP). APP produced investment cast airfoils for aero engine and industrial gas turbines and structural aero engine and airframe components. APP also provided additive manufacturing technologies, superalloy and titanium ingots, machining, performance coatings, and hot isostatic pressing for high performance parts.

Arconic Fastening Systems and Rings (AFSR). AFSR produced aerospace fastening systems and seamless rolled rings, as well as commercial transportation fasteners. The business’s high-tech, multi-material fastening systems are found nose to tail on aircraft and aero engines. The business’s products are also critical components of industrial gas turbines, automobiles, commercial transportation vehicles, and construction and industrial equipment.

Arconic Forgings and Extrusions (AFE). AFE produced defense airframe forgings and extrusions, such as forged bulkheads, wing and landing gear components, closed-die aero engine forgings, such as disks, and lightweight drive shafts for commercial transportation industries.

Arconic Titanium and Engineered Products (ATEP). ATEP produced titanium aero ingots and mill products, and provided multi-material airframe subassemblies and solutions related to advanced technologies and materials, such as 3D printing and titanium aluminides.

In January 2018, EP&S announced a change in the organizational structure of the segment, from four business units to three business units, with a focus on aligning its internal structure to core markets and customers and reducing costs. The three new business units are Arconic Engines; Arconic Fastening Systems; and Arconic Engineered Structures.

Arconic Engines (AE). AE will produce investment cast airfoils, seamless rolled rings and closed-die (including isothermal) forged turbine disks for aero engine and industrial gas turbines, as well as other structural aero engine components. AE also will provide additive manufacturing technologies, superalloy ingots, open-die forging, machining, performance coatings, and hot isostatic pressing for high performance parts.

Arconic Fastening Systems (AFS). AFS will produce aerospace fastening systems, as well as commercial transportation fasteners. The business’s high-tech, multi-material fastening systems are found nose to tail on aircraft and aero engines. The

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business’s products are also critical components of industrial gas turbines, automobiles, commercial transportation vehicles, and construction and industrial equipment.

Arconic Engineered Structures (AES). AES will produce titanium and aluminum ingots and mill products for aerospace and defense applications and is vertically integrated to produce structural investment castings, forgings and extrusions, for airframe, wing, aero-engine, and landing gear components, as well as lightweight drive shafts for the commercial transportation industries. AES will also provide multi-material airframe subassemblies and solutions related to advanced technologies and materials, such as 3D printing and titanium aluminides.

For additional discussion of the EP&S's business, see “Results of Operations—Segment Information” in Part II, Item 7. (Management’s Discussion and Analysis of Financial Condition and Results of Operations) and Note N to the Consolidated Financial Statements—Segment and Geographic Area Information in Part II, Item 8. (Financial Statements and Supplementary Data).

In November 2017, Arconic announced a multi-year cooperative research agreement with Airbus to advance metal 3D printing for aircraft manufacturing. Together, the companies will develop customized processes and parameters to produce and qualify large, structural 3D printed components, such as pylon spars and rib structures, up to approximately 1 meter (3 feet) in length. The arrangement combines Arconic’s expertise in metal additive manufacturing and metallurgy with Airbus’s design and qualification capabilities. In September 2017, the Company announced that Airbus and Arconic achieved a 3D printing first - the installation of a 3D printed titanium bracket on a series production Airbus commercial aircraft, the A350 XWB. Arconic is 3D printing these parts using laser power bed technologies at its additive manufacturing facility in Austin, Texas.

This 3D printed titanium bracket is part of an ongoing arrangement between the Company and Airbus. In 2016, Arconic announced three agreements with Airbus to produce titanium and nickel 3D printed parts for commercial aircraft, including the A320 platform and A350 XWB. These agreements draw on Arconic’s cutting-edge 3D printing technology capabilities, including laser powder bed and electron beam processes.

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Engineered Products and Solutions Principal Facilities¹ 

Country	Facility	Products
Australia	Oakleigh	Fasteners
Canada	Georgetown, Ontario2	Aerospace Castings
	Laval, Québec	Aerospace Castings and Machining
China	Suzhou2	Fasteners and Rings
France	Dives-sur-Mer	Aerospace and Industrial Gas Turbine Castings
	Evron	Aerospace and Specialty Castings
	Gennevilliers	Aerospace and Industrial Gas Turbine Castings
	Montbrison	Fasteners
	St. Cosme-en-Vairais2	Fasteners
	Toulouse	Fasteners
	Us-par-Vigny	Fasteners
Germany	Bestwig	Aerospace Castings
	Erwitte	Aerospace Castings
	Hannover2	Extrusions
	Hildesheim-Bavenstedt2	Fasteners
	Kelkheim2	Fasteners
Hungary	Eger	Forgings
	Nemesvámos	Fasteners
	Székesfehérvár	Aerospace and Industrial Gas Turbine Castings and Forgings
Japan	Nomi	Aerospace and Industrial Gas Turbine Castings
Mexico	Ciudad Acuña2	Aerospace Castings/Fasteners and Rings
Morocco	Casablanca2	Fasteners
South Korea	Kyoungnam	Extrusions
United Kingdom	Darley Dale	Forgings
	Ecclesfield	Ingot Castings
	Exeter2	Aerospace and Industrial Gas Turbine Castings and Alloy
	Glossop	Ingot Castings
	Ickles	Ingot Castings
	Leicester2	Fasteners
	Low Moor	Extrusions
	Meadowhall	Forgings
	Provincial Park	Forgings
	Redditch2	Fasteners
	River Don	Forgings
	Telford	Fasteners
	Welwyn Garden City	Aerospace Formed Parts

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Country	Facility	Products
United States	Chandler, AZ	Extrusions
	Tucson, AZ2	Fasteners
	Carson, CA2	Fasteners
	City of Industry, CA2	Fasteners
	Fontana, CA	Rings
	Fullerton, CA2	Fasteners
	Newbury Park, CA	Fasteners
	Rancho Cucamonga, CA	Rings
	Sylmar, CA	Fasteners
	Torrance, CA	Fasteners
	Branford, CT	Aerospace Coatings
	Winsted, CT	Aerospace Machining
	Savannah, GA	Forgings
	Lafayette, IN	Extrusions
	La Porte, IN	Aerospace and Industrial Gas Turbine Castings
	Burlington, MA2	Powdered Metal Parts
	Baltimore, MD2	Extrusions
	Whitehall, MI	Aerospace and Industrial Gas Turbine Castings and Coatings, Titanium Alloy and Specialty Products
	Sullivan, MO	Titanium Mill Products
	Washington, MO	Aerospace Formed Parts
	Big Lake, MN	Aerospace Machining
	New Brighton, MN	Aerospace Machining
	Dover, NJ	Aerospace and Industrial Gas Turbine Castings and Alloy
	Verdi, NV	Rings
	Kingston, NY2	Fasteners
	Massena, NY	Extrusions
	Rochester, NY	Rings
	Canton, OH2	Ferro-Titanium Alloys and Titanium Mill Products
	Cleveland, OH	Investment Casting Equipment, Aerospace Components, Castings, Forgings and Oil & Gas Drilling Products
	Niles, OH	Titanium Mill Products
	Morristown, TN2	Aerospace and Industrial Gas Turbine Ceramic Products
	Austin, TX2	Additively Manufactured Parts
	Houston, TX2	Extrusions
	Spring, TX	Deep Water Drilling Machining
	Waco, TX2	Fasteners
	Wichita Falls, TX	Aerospace and Industrial Gas Turbine Castings
	Hampton, VA2	Aerospace and Industrial Gas Turbine Castings
	Martinsville, VA	Titanium Mill Products

¹  Principal facilities are listed, and do not include 13 locations that serve as sales and administrative offices, distribution centers or warehouses.

²  Leased property or partially leased property.

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Global Rolled Products

Arconic’s Global Rolled Products segment (“GRP”) produces a range of aluminum sheet and plate products for the following markets:

Aerospace and Automotive - GRP provides a wide range of products, including many highly-differentiated sheet and plate products, for the worldwide aerospace and regional automotive markets.

Brazing, Commercial Transportation and Industrial - GRP provides specialty aluminum sheet and plate products for automotive, commercial transportation and industrial applications including proprietary heat exchanger products like multilayer brazing sheet.

Packaging - GRP serves the packaging market in Russia, Asia and Latin America through regional facilities.

In July 2017, GRP announced a new organization, streamlining and consolidating its businesses into a single group organization structure.

For additional discussion of the Global Rolled Products segment’s business, see “Results of Operations—Segment Information” in Part II, Item 7. (Management’s Discussion and Analysis of Financial Condition and Results of Operations) and Note N to the Consolidated Financial Statements—Segment and Geographic Area Information in Part II, Item 8. (Financial Statements and Supplementary Data).

In November 2017, the Company announced plans to install a new horizontal heat treat furnace at its Davenport, Iowa facility. This new furnace will enable Arconic to heat treat longer and thicker plate than ever before, including material for its new state of the art "very thick plate stretcher."

This stretcher, the world’s largest, improves the performance of thick aluminum and aluminum-lithium plate in aerospace and industrial applications, and enables the Company to produce the largest high-strength monolithic wing ribs in the industry. In April 2017, the Company announced the completion of the installation of the stretcher.

Also in April 2017, the Company announced the divestiture of its Fusina, Italy rolling mill to Slim Aluminum. The transaction was part of GRP’s drive to improve portfolio mix.

Global Rolled Products Principal Facilities

Country	Location	Products
Brazil	Itapissuma	Specialty Foil
China	Kunshan	Sheet and Plate
	Qinhuangdao1	Sheet and Plate
Hungary	Székesfehérvár	Sheet and Plate/Slabs and Billets
Russia	Samara	Sheet and Plate/Extrusions and Forgings
United Kingdom	Birmingham	Plate
United States	Davenport, IA	Sheet and Plate
	Danville, IL2	Sheet and Plate
	Hutchinson, KS2	Sheet and Plate
	Lancaster, PA	Sheet and Plate
	Alcoa, TN	Sheet
	Texarkana, TX3	Slabs
	San Antonio, TX4	Micromill™

¹  Leased property or partially leased property.

²  Properties are satellite locations of the Davenport, Iowa facility.

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³  The Texarkana rolling mill facility had been idle since September 2009 due to a continued weak outlook in common alloy markets. In January 2016, the Company restarted its Texarkana cast house to meet demand for aluminum slab for the automotive industry. The aluminum slab that is cast at Texarkana is turned into aluminum sheets at Arconic’s expanded automotive facility in Davenport, Iowa and its rolling mill in Lancaster, Pennsylvania.

⁴  Micromill™ production facility produces sheet for automotive and industrial applications using Arconic innovative production process.

Transportation and Construction Solutions

Arconic’s Transportation and Construction Solutions segment ("TCS") produces products that are used mostly in the commercial transportation and nonresidential building and construction end markets. Such products include integrated aluminum structural systems, architectural extrusions, forged aluminum commercial vehicle wheels, and aluminum products for the industrial products end market.

The Transportation and Construction Solutions segment is comprised of three business units: Arconic Wheel and Transportation Products; Building and Construction Systems; and Latin America Extrusions.

Arconic Wheel and Transportation Products (AWTP). AWTP provides forged aluminum wheels and related products for heavy-duty trucks and the commercial transportation markets.

Building and Construction Systems (BCS). BCS provides building and construction architectural framing products and aluminum curtain wall and front entry systems.

Latin America Extrusions (LAE). LAE serves both the building and construction and the industrial markets in Latin America, with products including aluminum architectural systems for doors, windows and curtain walls, and a wide range of extruded solutions for the automotive, defense and other industrial industries. In December 2017, Arconic announced an agreement to divest its LAE business. Customary regulatory and antitrust reviews are complete, and the ownership of LAE will be transferred to a subsidiary of Hydro Extruded Solutions AS. The deal is expected to close in the first half of 2018.

For additional discussion of the Transportation and Construction Solutions segment’s business, see “Results of Operations—Segment Information” in Part II, Item 7. (Management’s Discussion and Analysis of Financial Condition and Results of Operations) and Note N to the Consolidated Financial Statements—Segment and Geographic Area Information in Part II, Item 8. (Financial Statements and Supplementary Data).

Transportation and Construction Solutions Principal Facilities¹ 

Country	Facility	Products
Brazil	Itapissuma2	Forgings
	Tubarão3	Extrusions
	Utinga3	Extrusions
Canada	Lethbridge, Alberta	Architectural Products
China	Suzhou2	Forgings
France	Merxheim2	Architectural Products
Hungary	Székesfehérvár	Forgings
Japan	Jôetsu City2	Forgings
Mexico	Monterrey	Forgings
United Kingdom	Runcorn	Architectural Products
United States	Springdale, AR	Architectural Products
	Visalia, CA	Architectural Products
	Eastman, GA	Architectural Products
	Barberton, OH	Forgings
	Cleveland, OH	Forgings
	Bloomsburg, PA	Architectural Products
	Cranberry, PA	Architectural Products

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¹  Principal facilities are listed, and do not include 9 locations that serve as sales and administrative offices, distribution centers or warehouses. In addition to the facilities listed above, TCS has 21 service centers. These centers perform light manufacturing, such as assembly and fabrication of certain products.

²  Leased property or partially leased property.

³  Location is part of the planned divestiture of LAE, the sale of which is expected to be completed in the first half of 2018.

Sources and Availability of Raw Materials

The major raw materials purchased in 2017 for each of the Company’s reportable segments are listed below.

Engineered Products and Solutions	Global Rolled Products
Alloying materials	Alloying materials
Electricity	Aluminum scrap
Natural gas	Coatings
Nickel alloys	Electricity
Primary aluminum (ingot, billet, P1020, high purity)	Lube oil
Resin	Natural gas
Stainless steel	Packaging materials
Steel	Primary aluminum (ingot, slab, billet, P1020, high purity)
Titanium alloys	Steam
Titanium sponge
Transportation and Construction Solutions
Aluminum coil
Aluminum scrap
Electricity
Natural gas
Paint/Coating
Polyethylene
Primary aluminum
Resin

Generally, other materials are purchased from third-party suppliers under competitively priced supply contracts or bidding arrangements. The Company believes that the raw materials necessary to its business are and will continue to be available.

Patents, Trade Secrets and Trademarks

The Company believes that its domestic and international patent, trade secret and trademark assets provide it with a significant competitive advantage. The Company’s rights under its patents, as well as the products made and sold under them, are important to the Company as a whole and, to varying degrees, important to each business segment. The patents owned by Arconic generally concern particular products or manufacturing equipment or techniques. Arconic’s business as a whole is not, however, materially dependent on any single patent, trade secret or trademark. As a result of product development and technological advancement, the Company continues to pursue patent protection in jurisdictions throughout the world. As of the end of 2017, the Company’s worldwide patent portfolio consists of approximately 1,669 granted patents and 807 pending patent applications.

The Company also has a significant number of trade secrets, mostly regarding manufacturing processes and material compositions that give many of its businesses important advantages in their markets. The Company continues to strive to improve those processes and generate new material compositions that provide additional benefits.

With respect to domestic and international registered trademarks, the Company has many that have significant recognition within the markets that are served. Examples include the name “Arconic” and the Arconic symbol for aluminum, nickel, and titanium products, Howmet^® metal castings, Huck^® fasteners, Kawneer^® building panels and Dura-Bright^® wheels with easy-

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clean surface treatments. A significant trademark filing campaign for the name “Arconic” was completed in 2016, in support of the corporate launch of Arconic Inc. As of the end of 2017, the Company’s worldwide trademark portfolio consists of approximately 1,793 registered trademarks and 625 pending trademark applications. The Company’s rights under its trademarks are important to the Company as a whole and, to varying degrees, important to each business segment.

Competitive Conditions

Engineered Products and Solutions (EP&S)

EP&S’s business units - AFS (Arconic Fastening Systems), AE (Arconic Engines) and AES (Arconic Engineered Structures) -are subject to substantial and intense competition in the markets they serve. Although Arconic believes its advanced technology, manufacturing processes and experience provide advantages to Arconic’s customers, such as high quality and superior mechanical properties that meet the Company’s customers’ most stringent requirements, many of the products Arconic makes can be produced by competitors using similar types of manufacturing processes as well as alternative forms of manufacturing. Despite intense competition, Arconic continues as a market leader in most of its principal markets. Several factors, including Arconic’s legacy of technical innovation, state-of-the-art capabilities, engaged employees and long-standing customer relationships, enable the Company to maintain its competitive position.

Principal competitors in the EP&S segment include Berkshire Hathaway Inc., through its acquisition of Precision Castparts Corporation and subsidiaries, for titanium and titanium-based alloys, precision forgings, seamless rolled rings, investment castings and aerospace fasteners; VSMPO (Russia) for titanium and titanium-based alloys and precision forgings; the High-Performance Materials & Components segment of Allegheny Technologies, Inc. (ATI) for titanium and titanium-based alloys, precision forgings, and investment castings; Lisi Aerospace (France) for aerospace fasteners; and Aubert & Duval (part of Eramet Group in France) for precision forgings.

Other competitors include:

•Kaiser Aluminum - for extruded products

•Universal Alloy Corp., part of Montana Tech Components - for extruded products

•Doncasters Group Ltd. (UK) - for investment castings

•Consolidated Precision Products Corp., part of Warburg Pincus - for investment castings

•Weber Metals, part of Otto Fuchs - for precision forgings

•Forgital - for seamless rings

Several of Arconic’s largest customers have captive superalloy furnaces for producing airfoil investment castings for their own use. Many other companies around the world also produce superalloy investment castings, and some of these companies currently compete with Arconic in the aerospace and other markets, while others are capable of competing with the Company should they choose to do so.

International competition in the investment casting, fastener, ring and forging markets may also increase in the future as a result of strategic alliances among engine original equipment manufacturers (OEMs), aero-structure prime contractors, and overseas companies, especially in developing markets, particularly where “offset” or “local content” requirements create purchase obligations with respect to products manufactured in or directed to a particular country.

Global Rolled Products (GRP)

GRP is one of the leaders in many of the aluminum flat rolled products markets in which it participates, including aerospace, automotive, brazing sheet, commercial transportation, industrial markets and packaging. However, much like other Arconic businesses, GRP is subject to substantial and intense competition in all of its markets.

While GRP participates in markets where Arconic believes the Company has a significant competitive advantage due to customer intimacy, advanced manufacturing capability, unique technology and/or differentiated products, in certain cases, the Company’s competitors are capable of making products similar to Arconic’s. The Company continuously works to maintain and enhance its competitive advantage through innovation: new alloys such as Arconic’s new aerospace alloys, new products such as the Company’s 5-layer brazing products and break-through processes such as Arconic Micromill® technology.

Some of GRP’s markets are worldwide and some are more regionally focused. Participation in these segments by GRP’s competitors varies. For example, Novelis is the largest flat rolled products producer competing in automotive, but it does not participate in the aerospace market. On the other hand, Constellium participates in all major market segments including aerospace, brazing, industrial, commercial transportation and packaging. Granges participates only in the brazing sheet market. Other GRP competitors include Aleris, AMAG, Kaiser, Kobe, Nanshan, and UACJ.

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Additionally, there are a number of new competitors emerging, particularly in China and other developing economies. For example, in the brazing business, the number of viable competitors has doubled over a five-year period. Arconic expects that this competitive pressure will continue and increase in the future as customers seek to globalize their supply bases in order to reduce costs. The Company continually monitors and plans for these new emerging players.

Summary of Major Competitors for GRP:

• Constellium (The Netherlands)

• Novelis

• Kaiser Aluminum

• UACJ (Japan)

• Aleris

• Hydro (Norway)

• Nanshan (China)

• Granges (Sweden)

• Kobe (Japan)

Transportation and Construction Solutions (TCS)

In the forged aluminum wheels business, AWTP competes in commercial transportation, under the product brand name Alcoa^® Wheels, for the major regions that it serves (Americas, Europe, Japan, China, and Australia). AWTP competes against steel wheels, as well as aluminum. Its larger competitors are Accuride Corporation, Nippon Steel & Sumitomo Metal Corporation, Zhejiang Dicastal Hongxin Technology Co. Ltd, Wheels India Limited and Speedline (member of the Ronal Group). In recent years, AWTP has seen an increase in the number of aluminum wheel suppliers (both forged and cast aluminum wheels) from China, Taiwan, India and South Korea attempting to penetrate the commercial transportation market.

BCS is a manufacturer of aluminum architectural systems and products in North America and with a growing presence in Europe and the Middle East. In North America, BCS primarily competes in the nonresidential building segment. In Europe and the Middle East, it competes in both the residential and the nonresidential building segments. BCS competes with regional and local players in the architectural systems and more global companies in the products markets. BCS’s competitive advantage is the cornerstone to its strong brand, innovative products, customer intimacy and technical services. Over the past decade, the regional competitors, primarily in North America, have narrowed the product portfolio and technical services advantages. However, BCS has maintained its competitive advantage through innovative products like highly energy-efficient high-thermal products and differentiated services. BCS sales are derived mainly from the retail, office, education and healthcare building segments.

BCS is organized into two business segments: architectural systems and architectural products. The primary product categories in architectural systems are storefront, framing and entrances (SEF), curtain walls, and windows. In the SEF and curtain wall businesses, BCS competes with competitors like Apogee, YKK, Oldcastle, Schüco, Hydro/SAPA and Reynaers in their aluminum framing systems business. The architectural products business is more global and is primarily served by subsidiaries of larger companies like Alpolic (Mitsubishi Corporation), Alucobond (Schweiter Technologies) and Novelis (Aditya Birla Group). The primary product categories are aluminum composite material and coil coated sheet. The competitive landscape in the architectural systems market has been relatively stable since the mid-2000s, with the major competitors in North America and Europe still operating in their markets, despite some industry consolidation in North America during the late 2000s.

As noted above, in December 2017, Arconic announced the divestiture of its LAE business which is expected to close in the first half of 2018. LAE has participated in two distinct segments: building and construction and industrial. In the building and construction market, LAE develops and markets aluminum architectural systems for both commercial and residential buildings. In the industrial business market, LAE manufactures and sells soft alloy extruded profiles and solutions, mainly for the automotive, consumer goods, machinery and equipment segments. Overall, LAE has held a strong presence in Brazil, where competition is very fragmented, composed mainly of small local extruders and a few multinationals such as CBA (Votorantim Group) and SAPA.

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Summary of Major Competitors:

AWTP:

• Accuride Corporation

• Nippon Steel & Sumitomo Metal Corporation (Japan)

• Zhejiang Dicastal Hongxin Technology Co. Ltd (China)

• Wheels India Limited (India)

• Speedline (member of the Ronal Group in Switzerland)

BCS:

• Apogee, Oldcastle and YKK

• Alpolic, Alucobond and Alucoil

• Schüco (Germany), Hydro/SAPA (Norway), Reynaers (Belgium) and Corialis (Belgium)

• Alucobond, Alucoil, Euramax and Novelis

LAE:

• Belmetal (Brazil)

• CBA (Brazil)

• SAPA (Norway)

• Aluk (Brazil)

Research and Development

Arconic, at its light metals research center, engages in research and development (R&D) programs that include process and product development, and basic and applied research. R&D expenditures were $111 million, $132 million and $169 million in 2017, 2016 and 2015, respectively.

Throughout 2017, the Company continued working on new developments in all business segments and leveraging new technologies. The Company has continued investing in additive manufacturing, with a focus on producing metal powder materials tailored for a range of additive process technologies, and furthering its development of advanced 3D printing design and manufacturing techniques-such as Arconic’s Ampliforge^™ process-to improve production speeds, reduce costs, and achieve material properties not possible through other additive flowpaths. The Company’s new powder production facility was completed at the Arconic Technology Center in 2016. This facility will continue its focus on material development in aluminum, nickel and titanium alloys.

The Company is also producing and qualifying additively manufactured aerospace components via laser powder bed printing technology. It also is developing more formable titanium plate based wrought products for customers.

The Arconic Micromill® technology located in San Antonio continues to transition to commercial production, as the Company has invested in further developing Micromill™ technology, including installation of a pilot line at the Arconic Technology Center.

The Company continues to develop differentiated pretreatment technology, continuing to improve on its patented A951 technology, joining methods/fasteners (like RSR™) and highly formable and high strength automotive sheet products for automotive original equipment manufacturer applications in both cosmetic hang on parts and structural body-in-white applications.

The Company continued its differentiation in the commercial transportation market with Dura-Bright^® EVO, UltraOne™ and European UltraOne™ wheel products.

The Company also continues to develop and deploy proprietary processing technologies in the manufacture of aerospace components, as well as a continued commitment and commercialization of a portfolio of proprietary aerospace fasteners. One such example is Ergo-Tech^® blind fasteners which enable automated assembly operations.

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Environmental Matters

Information relating to environmental matters is included in Note K to the Consolidated Financial Statements under the caption “Environmental Matters” on page 84. Approved capital expenditures for new or expanded facilities for environmental control are $19 million for 2018and estimated expenditures for such purposes are $2million for 2019.

Employees

Total worldwide employment at the end of 2017 was approximately 41,500employees in 25 countries. About 20,900 of these employees are represented by labor unions. The Company believes that relations with its employees and any applicable union representatives generally are good.

In the United States, approximately 7,600 employees are represented by various labor unions. The largest collective bargaining agreement is the master collective bargaining agreement between Arconic and the United Steelworkers (USW). The USW master agreement covers approximately 3,300 employees at fourU.S. locations; the current labor agreement expires on May 15, 2019. There are 17 other collective bargaining agreements in the United States with varying expiration dates.

On a regional basis, collective bargaining agreements with varying expiration dates cover approximately 9,300 employees in Europe and Russia, 10,000 employees in North America, 600 employees in South America, and 1,000 employees in Asia.

Executive Officers of the Registrant

The names, ages, positions and areas of responsibility of the executive officers of the Company as of February 23, 2018 are listed below.

Charles P. “Chip” Blankenship, 51, Chief Executive Officer. Mr. Blankenship was elected Chief Executive Officer of Arconic and a member of the Arconic Board of Directors effective January 15, 2018. Mr. Blankenship was Senior Vice President of Haier Group, and President and Chief Executive Officer of its GE Appliances business from June 2016 to June 2017. GE Appliances was a division of General Electric Company until June 2016, when it was acquired by Qingdao Haier Co., Ltd., and Mr. Blankenship served as its President and Chief Executive Officer from December 2011 until June 2016. Prior to GE Appliances, Mr. Blankenship served as Vice President and General Manager of the Commercial Engines Operation for GE Aviation from July 2008 until December 2011. From April 2006 to July 2008, Mr. Blankenship was the General Manager of Aero Energy, a division of GE Energy.

Ken Giacobbe, 52, Executive Vice President and Chief Financial Officer. Mr. Giacobbe was elected Executive Vice President and Chief Financial Officer of Arconic effective November 1, 2016. Mr. Giacobbe joined Arconic in 2004 as Vice President of Finance for Global Extruded Products, part of Alcoa Forgings and Extrusions. He then served as Vice President of Finance for the Company’s Building and Construction Systems business from 2008 until 2011. In 2011, he assumed the role of Group Controller for the Engineered Products and Solutions segment. From January 2013 until October 2016, Mr. Giacobbe served as Chief Financial Officer of the Engineered Products and Solutions segment. Before joining Arconic, Mr. Giacobbe held senior finance roles at Avaya and Lucent Technologies.

Mark J. Krakowiak, 57, Executive Vice President, Strategy and Development. Mr. Krakowiak was elected to his current position effective January 29, 2018. Prior to joining Arconic, Mr. Krakowiak had a 33-year career at General Electric Company, where he held a range of financial and strategy roles, including positions in financial planning, business development and M&A, treasury and commercial. Most recently, Mr. Krakowiak was Chief Financial Officer of GE Appliances, a Haier Company, from June 2016 to January 2017. Previously, Mr. Krakowiak served as Vice President and Chief Financial Officer of General Electric’s Appliances and Lighting business from September 2011 to June 2016. From July 2009 to September 2011, Mr. Krakowiak was Chief Risk Officer of GE’s global enterprise risk function, and from January 2003 to July 2009, he was Vice President of GE’s Industrial Treasury and Insurance Operations.

Timothy D. Myers, 52, Executive Vice President and Group President, Global Rolled Products and Transportation and Construction Solutions. Mr. Myers was appointed Executive Vice President and Group President, Global Rolled Products and Transportation and Construction Solutions in October 2017. Prior to being appointed to his current role, he was Executive Vice President and Group President, Transportation and Construction Solutions from May 2016 to October 2017. Prior to that assignment, he was President of Alcoa Wheel and Transportation Products, from June 2009 to May 2016. Mr. Myers was Vice President and General Manager, Commercial Vehicle Wheels for the Alcoa Wheel Products business from January 2006 to June 2009. Mr. Myers joined Arconic in 1991 as an automotive applications engineer in the Commercial Rolled Products Division, and held a series of engineering, marketing, sales and management positions with the Company since that time.

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Paul Myron, 51, Vice President and Controller. Mr. Myron was elected Vice President and Controller of Arconic effective November 1, 2016. Mr. Myron joined Arconic as a systems analyst in Pittsburgh and in 1992 relocated to the Company’s Davenport, Iowa facility as a product accountant. He served in numerous financial management positions from 1995 until 2000 when he was named Commercial Manager and Controller for the Atlantic division of the Alcoa World Alumina and Chemicals business. In 2002, Mr. Myron was appointed Vice President of Finance, Alcoa Primary Metals and later became Vice President of Finance, Alcoa World Alumina and Chemicals. In 2005 Mr. Myron was named Director of Financial Planning and Analysis, accountable for Arconic’s financial planning, analysis, and reporting worldwide. In February 2012, he became Director of Finance Initiatives for the Engineered Products and Solutions segment, overseeing specific financial initiatives and projects within the group. From July 2012 until his most recent appointment, Mr. Myron served as Vice President, Finance and Business Excellence for the Arconic Power and Propulsion business.

Vas Nair,52, Executive Vice President, Human Resources. Ms. Nair was appointed Executive Vice President, Human Resources in November 2015. Prior to being appointed to her current role, Ms. Nair was Arconic’s Chief Talent and Diversity Officer, with global responsibility for diversity and inclusion from February 2015 to October 2015. Prior to joining Arconic, Ms. Nair was VP of Global Learning and Talent Development at Estee Lauder from November 2010 to January 2015. Ms. Nair was Vice President and Chief Learning Officer at Schering-Plough from November 2003 to October 2009.

Katherine H. Ramundo, 50, Executive Vice President, Chief Legal Officer and Secretary. Ms. Ramundo was elected to her current position effective November 1, 2016. Prior to joining Arconic, from January 2013 through August 2015, she was Executive Vice President, General Counsel and Secretary of ANN INC., the parent company of ANN TAYLOR and LOFT brands, based in New York. Prior to ANN INC., she served as Vice President, Deputy General Counsel and Assistant Secretary at Colgate-Palmolive, where she held various legal roles from November 1997 to January 2013. She began her career as a litigator in New York, practicing at major law firms, including Cravath, Swaine & Moore and Sidley & Austin.

Eric V. Roegner, 48, Executive Vice President and Group President, Engineered Products and Solutions, and President, Arconic Defense. Mr. Roegner was elected Executive Vice President and Group President, Engineered Products and Solutions effective October 2017, and President, Arconic Defense effective June 2012. Previously, Mr. Roegner served as Executive Vice President and Group President, Global Rolled Products from May 2017 until October 2017; Chief Operating Officer of Arconic Investment Castings, Titanium and Engineered Products from July 2015 until May 2017; and Chief Operating Officer of Alcoa Investment Castings, Forgings and Extrusions from January 2013 until July 2015. Mr. Roegner joined the Company in 2006 as Chief Operating Officer of Arconic’s Global Engineered Products business.

The Company’s executive officers are elected or appointed to serve until the next annual meeting of the Board of Directors (held in conjunction with the annual meeting of shareholders) except in the case of earlier death, retirement, resignation or removal.

Item 1A.    Risk Factors.

Arconic’s business, financial condition and results of operations may be impacted by a number of factors. In addition to the factors discussed elsewhere in this report, the following risks and uncertainties could materially harm its business, financial condition or results of operations, including causing Arconic’s actual results to differ materially from those projected in any forward-looking statements. The following list of significant risk factors is not all-inclusive or necessarily in order of importance. Additional risks and uncertainties not presently known to Arconic or that Arconic currently deems immaterial also may materially adversely affect the Company in future periods.

The markets for Arconic’s products are highly cyclical and are influenced by a number of factors, including global economic conditions.

Arconic is subject to cyclical fluctuations in global economic conditions and lightweight metals end-use markets. Arconic sells many products to industries that are cyclical, such as the aerospace, automotive, and commercial transportation and construction industries, and the demand for its products is sensitive to, and quickly impacted by, demand for the finished goods manufactured by its customers in these industries, which may change as a result of changes in regional or worldwide economies, currency exchange rates, energy prices or other factors beyond its control.

In particular, Arconic derives a significant portion of its revenue from products sold to the aerospace industry, which can be highly cyclical and reflective of changes in the general economy. The commercial aerospace industry is historically driven by the demand from commercial airlines for new aircraft. The U.S. and international commercial aviation industries may face challenges arising from competitive pressures and fuel costs. Demand for commercial aircraft is influenced by airline industry profitability, trends in airline passenger traffic, the state of U.S., regional and world economies, the ability of aircraft purchasers to obtain required financing and numerous other factors including the effects of terrorism, health and safety concerns, environmental constraints imposed upon aircraft operators, the retirement of older aircraft, and

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technological improvements to new engines. The military aerospace cycle is highly dependent on U.S. and foreign government funding; however, it is also driven by the effects of terrorism, a changing global political environment, U.S. foreign policy, the retirement of older aircraft, and technological improvements to new engines.

Further, the demand for Arconic’s automotive and ground transportation products is driven by the number of vehicles produced by automotive manufacturers and Arconic content per vehicle. The automotive industry is sensitive to general economic conditions, including credit markets and interest rates, and consumer spending and preferences regarding vehicle ownership and usage, vehicle size, configuration and features. Automotive sales and production can also be affected by other factors including the age of the vehicle fleet and related scrappage rates, labor relations issues, fuel prices, regulatory requirements, government initiatives, trade agreements and levels of competition.

While Arconic believes that the long-term prospects for its products are positive, the Company is unable to predict the future course of industry variables, the strength of the U.S., regional or global economies, or the effects of government intervention. Negative economic conditions, such as a major economic downturn, a prolonged recovery period, or disruptions in the financial markets, could have a material adverse effect on Arconic’s business, financial condition or results of operations.

Arconic faces significant competition, which may have an adverse effect on profitability.

As discussed in Part I, Item 1. (Business-Competitive Conditions) of this report, the markets for Arconic’s products are highly competitive. Arconic’s competitors include a variety of both U.S. and non-U.S. companies in all major markets. New product offerings or new technologies in the marketplace may compete with or replace Arconic products. The willingness of customers to accept substitutes for the products sold by Arconic, the ability of large customers to exert leverage in the marketplace to affect the pricing for Arconic’s products, and technological advancements or other developments by or affecting Arconic’s competitors or customers could adversely affect Arconic’s business, financial condition or results of operations.

Arconic may be unable to develop innovative new products or implement technology initiatives successfully.

Arconic’s competitive position and future performance depends, in part, on the Company’s ability to:

• identify and evolve with emerging technological and broader industry trends in Arconic’s target end-markets;

• identify and successfully execute on a strategy to remain an essential and sustainable element of its customer’s supply chain;

• fund, develop, manufacture and bring innovative new products and services to market quickly and cost-effectively;

• monitor disruptive technologies and understand customers’ and competitors’ abilities to deploy those disruptive technologies; and

• achieve sufficient return on investment for new products based on capital expenditures and research and development spending.

Arconic is working on new developments for a number of strategic projects in all business segments, including additive manufacturing, alloy development, engineered finishes and product design, high speed continuous casting and rolling technology, and other advanced manufacturing technologies. For more information on Arconic’s research and development programs, see “Research and Development” in Part I, Item 1. (Business) of this report.

While Arconic intends to continue committing substantial financial resources and effort to the development of innovative new products and services, it may not be able to successfully differentiate its products or services from those of its competitors or match the level of research and development spending of its competitors, including those developing technology to displace Arconic’s current products. In addition, Arconic may not be able to adapt to evolving markets and technologies or achieve and maintain technological advantages. There can be no assurance that any of Arconic’s new products or services, development programs or technologies will be commercially feasible or beneficial to Arconic.

Arconic could be adversely affected by changes in the business or financial condition or the loss of a significant customer or customers.

A significant downturn or deterioration in the business or financial condition or loss of a key customer or customers supplied by Arconic could affect Arconic’s financial results in a particular period. Arconic’s customers may experience delays in the launch of new products, labor strikes, diminished liquidity or credit unavailability, weak demand for their products, or other

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difficulties in their businesses. Arconic’s customers may also change their business strategies or modify their business relationships with Arconic, including to reduce the amount of Arconic’s products they purchase or to switch to alternative suppliers. If Arconic is unsuccessful in replacing business lost from such customers, profitability may be adversely affected.

Arconic could encounter manufacturing difficulties or other issues that impact product performance, quality or safety, which could affect Arconic’s reputation, business and financial statements.

The manufacture of many of Arconic’s products is a highly exacting and complex process. Problems may arise during manufacturing for a variety of reasons, including equipment malfunction, failure to follow specific protocols, specifications and procedures, including those related to quality or safety, problems with raw materials, supply chain interruptions, natural disasters, labor unrest and environmental factors. Such problems could have an adverse impact on the Company’s ability to fulfill orders or on product quality or performance. Product manufacturing or performance issues could result in recalls, customer penalties, contract cancellation and product liability exposure, including if any of our products are defective or are used in a manner that results in injuries or other damages. Because of approval and license requirements applicable to manufacturers and/or their suppliers, alternatives to mitigate manufacturing disruptions may not be readily available to the Company or its customers. Accordingly, manufacturing problems, product defects or other risks associated with our products, including their use or application, could result in significant costs to and liability for Arconic that could have a material adverse effect on its business, financial condition or results of operations, including the payment of potentially substantial monetary damages, fines or penalties, as well as negative publicity and damage to the Company’s reputation, which could adversely impact product demand and customer relationships.

Arconic’s business depends, in part, on its ability to meet increased program demand successfully and to mitigate the impact of program cancellations, reductions and delays.

Arconic is currently under contract to supply components for a number of new and existing commercial, general aviation and military aircraft programs and is the sole supplier of aluminum sheet for a number of aluminum-intensive automotive vehicle programs. Many of these programs are scheduled for production increases over the next several years. If Arconic fails to meet production levels or encounters difficulty or unexpected costs in meeting such levels, it could have a material adverse effect on the Company’s business, financial condition or results of operations. Similarly, program cancellations, reductions or delays could also have a material adverse effect on Arconic’s business.

Arconic could be adversely affected by reductions in defense spending.

Arconic’s products are used in a variety of military applications, including military aircraft and armored vehicles. Although many of the programs in which Arconic participates extend several years, they are subject to annual funding through congressional appropriations. Changes in military strategy and priorities, or reductions in defense spending, may affect current and future funding of these programs and could reduce the demand for Arconic’s products, which could adversely affect Arconic’s business, financial condition or results of operations.

Arconic’s global operations expose the Company to risks that could adversely affect Arconic’s business, financial condition, results of operations or cash flows.

Arconic has operations or activities in numerous countries and regions outside the United States, including Europe, Brazil, Canada, China, Japan, and Russia. As a result, the Company’s global operations are affected by economic, political and other conditions in the foreign countries in which Arconic does business as well as U.S. laws regulating international trade, including:

• economic and commercial instability risks, including those caused by sovereign and private debt default, corruption, and changes in local government laws, regulations and policies, such as those related to tariffs, sanctions and trade barriers, taxation, exchange controls, employment regulations and repatriation of earnings;

• geopolitical risks such as political instability, civil unrest, expropriation, nationalization of properties by a government, imposition of sanctions, and renegotiation or nullification of existing agreements;

• war or terrorist activities;

• major public health issues such as an outbreak of a pandemic or epidemic (such as Sudden Acute Respiratory Syndrome, Avian Influenza, H7N9 virus, or the Ebola virus), which could cause disruptions in Arconic’s operations or workforce;

• difficulties enforcing intellectual property and contractual rights in certain jurisdictions;

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• changes in trade and tax laws that may result in our customers being subjected to increased taxes, duties and tariffs and reduce their willingness to use our services in countries in which we are currently manufacturing their products;

• rising labor costs;

• labor unrest, including strikes;

• compliance with antitrust and competition regulations;

• compliance with foreign labor laws, which generally provide for increased notice, severance and consultation requirements compared to U.S. laws;

• aggressive, selective or lax enforcement of laws and regulations by national governmental authorities;

• compliance with the Foreign Corrupt Practices Act (“FCPA”) and other anti-bribery and corruption laws;

• compliance with U.S. laws concerning trade, including the International Traffic in Arms Regulations (“ITAR”), the Export Administration Regulations (“EAR”), and the sanctions, regulations and embargoes administered by the U.S. Department of Treasury’s Office of Foreign Asset Controls (“OFAC”);

• imposition of currency controls;

• adverse tax audit rulings; and

• unexpected events, including fires or explosions at facilities, and natural disasters.

Although the effect of any of the foregoing factors is difficult to predict, any one or more of them could adversely affect Arconic’s business, financial condition, or results of operations. While Arconic believes it has adopted appropriate risk management, compliance programs and insurance arrangements to address and reduce the risks associated with these factors, such measures may provide inadequate protection against costs or liabilities that may arise from such events.

Arconic may face challenges to its intellectual property rights which could adversely affect the Company’s reputation, business and competitive position.

Arconic owns important intellectual property, including patents, trademarks, copyrights and trade secrets. The Company’s intellectual property plays an important role in maintaining Arconic’s competitive position in a number of the markets that the Company serves. Arconic’s competitors may develop technologies that are similar or superior to Arconic’s proprietary technologies or design around the patents Arconic owns or licenses. The pursuit of remedies for any misappropriation of such intellectual property is expensive and the ultimate remedies may be deemed insufficient. Further, as the Company expands its operations in jurisdictions where the enforcement of intellectual property rights is less robust, the risk of misappropriation of Arconic intellectual property increases, despite efforts the Company undertakes to protect them. Developments or assertions by or against Arconic relating to intellectual property rights, and any inability to protect or enforce these rights sufficiently, could adversely affect Arconic’s business and competitive position.

Arconic may be unable to realize the expected benefits from acquisitions, divestitures, joint ventures and strategic alliances.

Arconic has made, and may continue to plan and execute, acquisitions and divestitures and take other actions to grow its business or streamline its portfolio. Although management believes that its strategic actions are beneficial to Arconic, there is no assurance that anticipated benefits will be realized. Acquisitions present significant challenges and risks, including the effective integration of the business into the Company, unanticipated costs and liabilities, and the ability to realize anticipated benefits, such as growth in market share, revenue or margins, at the levels or in the timeframe expected. The Company may be unable to manage acquisitions successfully. Additionally, adverse factors may prevent Arconic from realizing the benefits of its growth projects, including unfavorable global economic conditions, currency fluctuations, or unexpected delays in target timelines.

With respect to portfolio optimization actions such as divestitures, curtailments and closures, Arconic may face barriers to exit from unprofitable businesses or operations, including high exit costs or objections from various stakeholders. In addition, Arconic may retain unforeseen liabilities for divested entities if a buyer fails to honor all commitments. Arconic’s business operations are capital intensive, and curtailment or closure of operations or facilities may include significant charges, including employee separation costs, asset impairment charges and other measures.

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In addition, Arconic has participated in, and may continue to participate in, joint ventures, strategic alliances and other similar arrangements from time to time. Although the Company has, in connection with past and existing joint ventures, sought to protect its interests, joint ventures and strategic alliances inherently involve special risks. Whether or not Arconic holds majority interests or maintains operational control in such arrangements, its partners may:

• have economic or business interests or goals that are inconsistent with or opposed to those of the Company;

• exercise veto rights to block actions that Arconic believes to be in its or the joint venture’s or strategic alliance’s best interests;

• take action contrary to Arconic’s policies or objectives with respect to investments; or

• as a result of financial or other difficulties, be unable or unwilling to fulfill their obligations under the joint venture, strategic alliance or other agreements, such as contributing capital to expansion or maintenance projects.

There can be no assurance that acquisitions, growth investments, divestitures, closures, joint ventures, strategic alliances or similar arrangements will be undertaken or completed in their entirety as planned or that they will be beneficial to Arconic, whether due to the above-described risks, unfavorable global economic conditions, increases in construction costs, currency fluctuations, political risks, or other factors.

Arconic may be unable to realize future targets or goals established for its business segments, at the levels or by the dates targeted.

From time to time, Arconic may announce future targets or goals for its business, which are based on the Company’s then current expectations, estimates, forecasts and projections about the operating environment, economies and markets in which Arconic operates. Future targets and goals reflect the Company’s beliefs and assumptions and its perception of historical trends, then current conditions and expected future developments, as well as other factors management believes are appropriate in the circumstances. As such, targets and goals are inherently subject to significant business, economic, competitive and other uncertainties and contingencies regarding future events, including the risks discussed in this report. The actual outcome may be materially different. There can be no assurance that any targets or goals established by the Company will be accomplished at the levels or by the dates targeted, if at all. Failure to achieve the targets or goals by the Company may have a material adverse effect on its business, financial condition, results of operations or the market price of its securities.

Cyber attacks and security breaches may threaten the integrity of Arconic’s intellectual property and other sensitive information, disrupt its business operations, and result in reputational harm and other negative consequences that could have a material adverse effect on its financial condition and results of operations.

Arconic faces global cybersecurity threats, which may range from uncoordinated individual attempts to sophisticated and targeted measures, known as advanced persistent threats, directed at the Company. Cyber attacks and security breaches may include, but are not limited to, attempts to access information, computer viruses, denial of service and other electronic security breaches.

The Company believes that it faces a heightened threat of cyber attacks due to the industries it serves, the locations of its operations and its technological innovations. The Company has experienced cybersecurity attacks in the past, including breaches of its information technology systems in which information was taken, and may experience them in the future, potentially with more frequency or sophistication. Based on information known to date, past attacks have not had a material impact on Arconic’s financial condition or results of operations. However, due to the evolving nature of cybersecurity threats, the scope and impact of any future incident cannot be predicted. While the Company continually works to safeguard its systems and mitigate potential risks, there is no assurance that such actions will be sufficient to prevent cyber attacks or security breaches that manipulate or improperly use its systems or networks, compromise confidential or otherwise protected information, destroy or corrupt data, or otherwise disrupt its operations. The occurrence of such events could negatively impact Arconic’s reputation and its competitive position and could result in litigation with third parties, regulatory action, loss of business, potential liability and increased remediation costs, any of which could have a material adverse effect on its financial condition and results of operations. In addition, such attacks or breaches could require significant management attention and resources, and result in the diminution of the value of the Company’s investment in research and development.

A decline in Arconic’s financial performance or outlook could negatively impact the Company’s access to the global capital markets, reduce the Company’s liquidity and increase its borrowing costs.

Arconic has significant capital requirements and depends, in part, upon the issuance of debt to fund its operations and contractual commitments and pursue strategic acquisitions. A decline in the Company’s financial performance or outlook

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due to internal or external factors could affect the Company’s access to, and the availability or cost of, financing on acceptable terms and conditions. There can be no assurance that Arconic will have access to the global capital market on terms the Company finds acceptable. Limitations on Arconic’s ability to access the global capital markets, a reduction in the Company’s liquidity or an increase in borrowing costs could materially and adversely affect Arconic’s ability to maintain or grow its business, which in turn may adversely affect its financial condition and results of operations.

A downgrade of Arconic’s credit ratings could limit Arconic’s ability to obtain future financing, increase its borrowing costs, increase the pricing of its credit facilities, adversely affect the market price of its securities, trigger letter of credit or other collateral postings, or otherwise impair its business, financial condition, and results of operations.

Arconic’s credit ratings are important to the Company’s cost of capital. The major rating agencies routinely evaluate Arconic’s credit profile and assign debt ratings to the Company. This evaluation is based on a number of factors, which include financial strength, business and financial risk, as well as transparency with rating agencies and timeliness of financial reporting. On May 1, 2017, Standard and Poor’s Ratings Services affirmed Arconic’s long-term debt at BBB-, an investment grade rating, with a stable outlook, and its short-term debt at A-3. On November 1, 2016, Moody’s Investor Service (Moody’s) downgraded Arconic’s long-term debt rating from Ba1, a non-investment grade, to Ba2 and its short-term debt rating from Speculative Grade Liquidity-1 to Speculative Grade Liquidity-2. Additionally, Moody’s changed the outlook from negative to stable (ratings and outlook were affirmed on November 2, 2017). On April 21, 2016, Fitch affirmed Arconic’s long-term debt rating at BB+, a non-investment grade, and short-term debt at B. Additionally, Fitch changed the current outlook from positive to evolving. On July 7, 2016, Fitch changed the current outlook from evolving to stable (ratings and outlook were affirmed on July 3, 2017).

There can be no assurance that one or more of these or other rating agencies will not take negative actions with respect to Arconic’s ratings. Increased debt levels, macroeconomic conditions, a deterioration in the Company’s debt protection metrics, a contraction in the Company’s liquidity, or other factors could potentially trigger such actions. A rating agency may lower, suspend or withdraw entirely a rating or place it on negative outlook or watch if, in that rating agency’s judgment, circumstances so warrant.

A downgrade of Arconic’s credit ratings by one or more rating agencies could adversely impact the market price of Arconic’s securities; adversely affect existing financing (for example, a downgrade by Standard and Poor’s or a further downgrade by Moody’s would subject Arconic to higher costs under Arconic’s Five-Year Revolving Credit Agreement and certain of its other revolving credit facilities); limit access to the capital (including commercial paper) or credit markets or otherwise adversely affect the availability of other new financing on favorable terms, if at all; result in more restrictive covenants in agreements governing the terms of any future indebtedness that the Company incurs; increase the cost of borrowing or fees on undrawn credit facilities; result in vendors or counterparties seeking collateral or letters of credit from Arconic; or otherwise impair Arconic’s business, financial condition and results of operations.

Arconic’s business and growth prospects may be negatively impacted by limits in its capital expenditures.

Arconic requires substantial capital to invest in growth opportunities and to maintain and prolong the life and capacity of its existing facilities. Insufficient cash generation or capital project overruns may negatively impact Arconic’s ability to fund as planned its sustaining and return-seeking capital projects. Over the long term, Arconic’s ability to take advantage of improved market conditions or growth opportunities in its businesses may be constrained by earlier capital expenditure restrictions, which could adversely affect the long-term value of its business and the Company’s position in relation to its competitors.

An adverse decline in the liability discount rate, lower-than-expected investment return on pension assets and other factors could affect Arconic’s results of operations or amount of pension funding contributions in future periods.

Arconic’s results of operations may be negatively affected by the amount of expense Arconic records for its pension and other postretirement benefit plans, reductions in the fair value of plan assets and other factors. Arconic calculates income or expense for its plans using actuarial valuations in accordance with accounting principles generally accepted in the United States of America (GAAP).

These valuations reflect assumptions about financial market and other economic conditions, which may change based on changes in key economic indicators. The most significant year-end assumptions used by Arconic to estimate pension or other postretirement benefit income or expense for the following year are the discount rate applied to plan liabilities and the expected long-term rate of return on plan assets. In addition, Arconic is required to make an annual measurement of plan assets and liabilities, which may result in a significant charge to shareholders’ equity. For a discussion regarding how Arconic’s financial statements can be affected by pension and other postretirement benefits accounting policies, see “Critical Accounting Policies and Estimates-Pension and Other Postretirement Benefits” in Part II, Item 7. (Management’s Discussion

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and Analysis of Financial Condition and Results of Operations) and Note T to the Consolidated Financial Statements-Pension and Other Postretirement Benefits in Part II, Item 8. (Financial Statements and Supplementary Data). Although GAAP expense and pension funding contributions are impacted by different regulations and requirements, the key economic factors that affect GAAP expense would also likely affect the amount of cash or securities Arconic would contribute to the pension plans.

Potential pension contributions include both mandatory amounts required under federal law and discretionary contributions to improve the plans’ funded status. The Moving Ahead for Progress in the 21st Century Act (“MAP-21”), enacted in 2012, provided temporary relief for employers like Arconic who sponsor defined benefit pension plans related to funding contributions under the Employee Retirement Income Security Act of 1974 by allowing the use of a 25-year average discount rate within an upper and lower range for purposes of determining minimum funding obligations. In 2014, the Highway and Transportation Funding Act (HATFA) was signed into law. HATFA extended the relief provided by MAP-21 and modified the interest rates that had been set by MAP-21. In 2015, the Bipartisan Budget Act of 2015 (BBA 2015) was signed into law. BBA 2015 extends the relief period provided by HAFTA. Arconic believes that the relief provided by BBA 2015 will moderately reduce the cash flow sensitivity of the Company’s U.S. pension plans’ funded status to potential declines in discount rates over the next several years. However, higher than expected pension contributions due to a decline in the plans’ funded status as a result of declines in the discount rate or lower-than-expected investment returns on plan assets could have a material negative effect on the Company’s cash flows. Adverse capital market conditions could result in reductions in the fair value of plan assets and increase the Company’s liabilities related to such plans, which could adversely affect Arconic’s liquidity and results of operations.

Unanticipated changes in Arconic’s tax provisions or exposure to additional tax liabilities could affect Arconic’s future profitability.

Arconic is subject to income taxes in both the United States and various non-U.S. jurisdictions. Its domestic and international tax liabilities are dependent upon the distribution of income among these different jurisdictions. Changes in applicable domestic or foreign tax laws and regulations, or their interpretation and application, including the possibility of retroactive effect, could affect the Company’s tax expense and profitability. Arconic’s tax expense includes estimates of additional tax that may be incurred for tax exposures and reflects various estimates and assumptions. The assumptions include assessments of future earnings of the Company that could impact the valuation of its deferred tax assets. The Company’s future results of operations could be adversely affected by changes in the effective tax rate as a result of a change in the mix of earnings in countries with differing statutory tax rates, changes in the overall profitability of the Company, changes in tax legislation and rates, changes in generally accepted accounting principles, changes in the valuation of deferred tax assets and liabilities, the results of tax audits and examinations of previously filed tax returns or related litigation and continuing assessments of its tax exposures.

Corporate tax law changes continue to be analyzed in the United States and in many other jurisdictions. In particular, on December 22, 2017, the Tax Cuts and Jobs Act (the “2017 Act”) was signed into law, significantly reforming the United States Internal Revenue Code of 1986, as amended. The Company continues to review the components of the 2017 Act and evaluate its consequences. As such, the ultimate impact of the 2017 Act may differ from reported amounts, possibly materially, due to, among other things, changes in interpretations and assumptions the Company has made; guidance that may be issued; and actions the Company may take as a result of the 2017 Act. The changes to the U.S. corporate tax system resulting from the 2017 Act could have a substantial impact, positive or negative, on Arconic’s future effective tax rate, cash tax expenditures, and deferred tax assets and liabilities.

Arconic’s business could be adversely affected by increases in the cost of aluminum.

Arconic derives a significant portion of its revenue from aluminum-based products. The price of primary aluminum has historically been subject to significant cyclical price fluctuations and the timing of changes in the market price of aluminum is largely unpredictable. Although the Company’s pricing of products is generally intended to pass the risk of metal price fluctuations on to the Company’s customers, Arconic may be unable to pass on the entire cost of increases to its customers and there can be a potential time lag on certain products between increases in costs for aluminum and the point when the Company can implement a corresponding increase in price to its customers. As a result, Arconic may be exposed to such price fluctuations during the time lag. If this occurs, it could have a material adverse effect on Arconic’s business, financial condition or results of operations.

Arconic is exposed to fluctuations in foreign currency exchange rates and interest rates, as well as inflation, and other economic factors in the countries in which it operates.

Economic factors, including inflation and fluctuations in foreign currency exchange rates and interest rates, competitive factors in the countries in which Arconic operates, and continued volatility or deterioration in the global economic and

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financial environment could affect Arconic’s revenues, expenses and results of operations. Changes in the valuation of the U.S. dollar against other currencies, including the Euro, British pound, Chinese yuan (renminbi) and Russian ruble, may affect Arconic’s profitability as some important inputs are purchased in other currencies, while the Company’s products are generally sold in U.S. dollars.

Arconic may not realize expected benefits from its productivity and cost-reduction initiatives.

Arconic has undertaken, and may continue to undertake, productivity and cost-reduction initiatives to improve performance and conserve cash, including deployment of company-wide business process models, such as Arconic’s degrees of implementation process in which ideas are executed in a disciplined manner to generate savings, and overhead cost reductions. There is no assurance that these initiatives will be successful or beneficial to Arconic or that estimated cost savings from such activities will be realized. If Arconic fails to achieve net cost savings at anticipated levels, its business, financial condition or results of operations could be adversely affected.

Arconic’s customers may reduce their demand for aluminum products in favor of alternative materials.

Certain applications of Arconic’s aluminum-based products compete with products made from other materials, such as steel, titanium and composites. The willingness of customers to pursue materials other than aluminum depends upon the desire to achieve specific attributes. For example, the commercial aerospace industry has used and continues to evaluate the further use of alternative materials to aluminum, such as titanium and composites, in order to reduce the weight and increase the fuel efficiency of aircraft. Additionally, the automotive industry, while motivated to reduce vehicle weight through the use of aluminum, may revert to steel or other materials for certain applications. Further, the decision to use aluminum may be impacted by aluminum prices. The willingness of customers to accept other materials in lieu of aluminum could adversely affect the demand for certain of Arconic’s products, and thus adversely affect Arconic’s business, financial condition or results of operations.

Arconic’s profitability could be adversely affected by volatility in the availability or cost of raw materials.

Arconic’s results of operations may be affected by changes in the availability or cost of raw materials (e.g., aluminum, nickel, titanium dioxide), as well as freight costs associated with transportation of raw materials. The availability and costs of certain raw materials necessary for the production of Arconic’s products may be influenced by private or government entities, changes in world politics or regulatory requirements, labor relations between the producers and their work forces, unstable governments in exporting nations, export quotas, sanctions, new or increased import duties, countervailing or anti-dumping duties, market forces of supply and demand, and inflation. In addition, from time to time, commodity prices may fall rapidly. When this happens, suppliers may withdraw capacity from the market until prices improve, which may cause periodic supply interruptions. Arconic may be unable to offset fully the effects of raw material shortages or higher costs through price increases, productivity improvements or cost reduction programs. Shortages or price fluctuations in raw materials could have a material adverse effect on Arconic’s operating results.

Union disputes and other employee relations issues could adversely affect Arconic’s business, financial condition or results of operations.

A significant portion of Arconic’s employees are represented by labor unions in a number of countries under various collective bargaining agreements with varying durations and expiration dates. For more information, see “Employees” in Part I, Item 1. (Business) of this report. While Arconic was previously successful in renegotiating its collective bargaining agreements with various unions, Arconic may not be able to satisfactorily renegotiate collective bargaining agreements in the United States and other countries when they expire. In addition, existing collective bargaining agreements may not prevent a strike or work stoppage at Arconic’s facilities in the future. Arconic may also be subject to general country strikes or work stoppages unrelated to its business or collective bargaining agreements. Any such work stoppages (or potential work stoppages) could have a material adverse effect on Arconic’s business, financial condition or results of operations.

A failure to attract, retain or provide adequate succession plans for key personnel could adversely affect Arconic’s operations and competitiveness.

Arconic’s existing operations and development projects require highly skilled executives and staff with relevant industry and technical experience. The inability of the Company to attract and retain such people may adversely impact Arconic’s ability to meet project demands adequately and fill roles in existing operations. Skills shortages in engineering, manufacturing, technology, construction and maintenance contractors and other labor market inadequacies may also impact activities. These shortages may adversely impact the cost and schedule of development projects and the cost and efficiency of existing operations.

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In addition, the continuity of key personnel and the preservation of institutional knowledge are vital to the success of the Company’s growth and business strategy. The loss of key members of management and other personnel could significantly harm Arconic’s business, and any unplanned turnover, or failure to develop adequate succession plans for key positions, could deplete the Company’s institutional knowledge base, delay or impede the execution of the Company’s business plans and erode Arconic’s competitiveness.

Arconic may be exposed to significant legal proceedings, investigations or changes in U.S. federal, state or foreign law, regulation or policy.

Arconic’s results of operations or liquidity in a particular period could be affected by new or increasingly stringent laws, regulatory requirements or interpretations, or outcomes of significant legal proceedings or investigations adverse to Arconic. The Company may experience a change in effective tax rates or become subject to unexpected or rising costs associated with business operations or provision of health or welfare benefits to employees due to changes in laws, regulations or policies. The Company is also subject to a variety of legal and regulatory compliance risks associated with its business and products. These risks include, among other things, potential claims relating to product liability, health and safety, environmental matters, intellectual property rights, government contracts and taxes, as well as compliance with U.S. and foreign laws and regulations governing export, anti-bribery, antitrust and competition, sales and trading practices, and the manufacture and sale of products. Arconic could be subject to fines, penalties, damages (in certain cases, treble damages), or suspension or debarment from government contracts.

For example, in the event that an Arconic product fails to perform as expected, regardless of fault, or is used in an unexpected manner, and such failure or use results in, or is alleged to result in, bodily injury and/or property damage or other losses, Arconic may be subject to product liability lawsuits and other claims or may be required or requested by its customers to participate in a recall or other corrective action involving such product. In addition, if an Arconic product is perceived to be defective or unsafe, sales of the Company’s products could be diminished, and the Company could be subject to further liability claims. Even if Arconic successfully defends against these types of claims, the Company could still be required to spend a substantial amount of money in connection with legal proceedings or investigations with respect to such claims; the Company’s management could be required to devote significant time, attention and operational resources responding to and defending against these claims; and Arconic’s reputation could suffer, any of which could have a material adverse effect on its financial condition and results of operations.

While Arconic believes it has adopted appropriate risk management and compliance programs to address and reduce these risks, including insurance arrangements with respect to these risks, such measures may provide inadequate protection against liabilities that may arise. The global and diverse nature of Arconic’s operations means that these risks will continue to exist, and additional legal proceedings and contingencies may arise from time to time. In addition, various factors or developments can lead the Company to change current estimates of liabilities or make such estimates for matters previously unsusceptible to reasonable estimates, such as a significant judicial ruling or judgment, a significant settlement, significant regulatory developments or changes in applicable law. A future adverse ruling or settlement or unfavorable changes in laws, regulations or policies, or other contingencies that the Company cannot predict with certainty could have a material adverse effect on the Company’s financial condition, results of operations or cash flows in a particular period. For additional information regarding the legal proceedings involving the Company, see the discussion in Part I, Item 3. (Legal Proceedings) of this report and in Note L to the Consolidated Financial Statements in Part II, Item 8. (Financial Statements and Supplementary Data).

Arconic is subject to a broad range of health, safety and environmental laws and regulations in the jurisdictions in which it operates and may be exposed to substantial costs and liabilities associated with such laws and regulations.

Arconic’s operations worldwide are subject to numerous complex and increasingly stringent health, safety and environmental laws and regulations. The costs of complying with such laws and regulations, including participation in assessments and cleanups of sites, as well as internal voluntary programs, are significant and will continue to be so for the foreseeable future. Environmental laws may impose cleanup liability on owners and occupiers of contaminated property, including past or divested properties, regardless of whether the owners and occupiers caused the contamination or whether the activity that caused the contamination was lawful at the time it was conducted. Environmental matters for which Arconic may be liable may arise in the future at its present sites, where no problem is currently known, at previously owned sites, sites previously operated by the Company, sites owned by its predecessors or sites that it may acquire in the future. Compliance with health, safety and environmental laws and regulations may prove to be more challenging and costly than the Company anticipates. For example, new data and information, including information about the ways in which the Company’s products are used, may lead the Company, regulatory authorities, government agencies or other entities or organizations to publish guidelines or recommendations, or impose restrictions, related to the manufacturing or use of the Company’s products. This could lead to

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reduced sales or market acceptance of the Company’s products. Arconic’s results of operations or liquidity in a particular period could be affected by certain health, safety or environmental matters, including remediation costs and damages related to certain sites as well as other health and safety risks relating to its operations and products. Additionally, evolving regulatory standards and expectations can result in increased litigation and/or increased costs, all of which can have a material and adverse effect on the Company’s financial condition, results of operations and cash flows.

Arconic is subject to privacy and data security/protection laws in the jurisdictions in which it operates and may be exposed to substantial costs and liabilities associated with such laws and regulations.

The regulatory environment surrounding information security and privacy is increasingly demanding, with frequent imposition of new and changing requirements. For example, the European Union's General Data Protection Regulation (“GDPR’), which will become effective in May 2018, imposes significant new requirements on how companies process and transfer personal data, as well as significant fines for non-compliance. Compliance with changes in privacy and information security laws and standards may result in significant expense due to increased investment in technology and the development of new operational processes, which could have a material adverse effect on Arconic’s financial condition and results of operations. In addition, the payment of potentially significant fines or penalties in the event of a breach of the GDRP or other privacy and information security laws, as well as the negative publicity associated with such a breach, could damage the Company’s reputation and adversely impact product demand and customer relationships.

Arconic may be subject to securities litigation, which could cause the Company to incur substantial costs and divert management’s attention and resources.

Arconic currently is, and may in the future become, subject to claims and litigation alleging violations of the securities laws. Arconic is generally obliged, to the extent permitted by law, to indemnify its current and former directors and officers who are named as defendants in these types of lawsuits. Regardless of the outcome, securities litigation may require substantial attention from management and could result in significant legal expenses, settlement costs or damage awards that could have a material impact on the Company’s financial position, results of operations and cash flows.

Failure to comply with domestic or international employment and related laws could result in penalties or costs that could have a material adverse effect on Arconic’s business results.

Arconic is subject to a variety of domestic and foreign employment laws, such as the Fair Labor Standards Act (which governs such matters as minimum wages, overtime and other working conditions), state and local wage laws, the Employee Retirement Income Security Act (“ERISA”), and regulations related to safety, discrimination, organizing, whistle-blowing, classification of employees, privacy and severance payments, citizenship requirements, and healthcare insurance mandates. Allegations that Arconic has violated such laws or regulations could damage the Company’s reputation and lead to fines from or settlements with federal, state or foreign regulatory authorities or damages payable to employees, which could have a material adverse impact on Arconic’s operations and financial condition.

Arconic may be affected by global climate change or by legal, regulatory, or market responses to such change.

Increased concern over climate change has led to new and proposed legislative and regulatory initiatives, such as cap-and-trade systems and additional limits on emissions of greenhouse gases. New laws enacted could directly and indirectly affect Arconic’s customers and suppliers (through an increase in the cost of production or their ability to produce satisfactory products) or business (through an impact on Arconic’s inventory availability, cost of sales, operations or demand for Arconic products), which could result in an adverse effect on our financial condition, results of operations and cash flows. Compliance with any new or more stringent laws or regulations, or stricter interpretations of existing laws, could require additional expenditures by the Company or its customers or suppliers. Also, Arconic relies on natural gas, electricity, fuel oil and transport fuel to operate its facilities. Any increased costs of these energy sources because of new laws could be passed along to the Company and its customers and suppliers, which could also have a negative impact on Arconic’s profitability.

Anti-takeover provisions could prevent or delay a change in control of Arconic, including a takeover attempt by a third party and limit the power of Arconic’s shareholders.

Arconic’s Certificate of Incorporation and Bylaws contain, and Delaware law contains, provisions that are intended to deter coercive takeover practices and inadequate takeover bids by making such practices or bids unacceptably expensive to the bidder and to encourage prospective acquirers to negotiate with Arconic’s Board of Directors rather than to attempt a hostile takeover. For example, Arconic is subject to Section 203 of the Delaware General Corporation Law, which imposes certain restrictions on mergers and other business combinations between the Company and any holder of 15% or more of the Company’s outstanding common stock, which could make it more difficult for another party to acquire Arconic. Additionally, the Company’s Certificate of Incorporation authorizes Arconic’s Board of Directors to issue preferred stock or adopt other

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anti-takeover measures without shareholder approval. These provisions may apply even if an offer may be considered beneficial by some shareholders and could delay or prevent an acquisition that Arconic’s Board of Directors determines is not in the best interests of Arconic’s shareholders. These provisions may also limit the price that investors might be willing to pay in the future for shares of Arconic common stock, or prevent or discourage attempts to remove and replace incumbent directors.

Dividends on Arconic common stock could be reduced or eliminated in the event of material future deterioration in business conditions or in other circumstances.

The existence, timing, declaration, amount and payment of future dividends to Arconic’s shareholders falls within the discretion of Arconic’s Board of Directors. The Arconic Board of Director’s decisions regarding the payment of dividends will depend on many factors, such as Arconic’s financial condition, earnings, capital requirements, debt service obligations, covenants associated with certain of the Company’s debt service obligations, industry practice, legal requirements, regulatory constraints and other factors that Arconic’s Board of Directors deems relevant. Arconic’s Board of Directors may determine to reduce or eliminate Arconic’s common stock dividend in the event of material future deteriorations in business conditions or in other circumstances.

Changes in the United Kingdom’s economic and other relationships with the European Union could adversely affect Arconic.

In June 2016, a majority of voters in the United Kingdom elected to withdraw from the European Union in a national referendum (also referred to as “Brexit”). The ultimate effects of Brexit on Arconic are difficult to predict, but because the Company currently operates and conducts business in the United Kingdom and in Europe, the results of the referendum and any eventual withdrawal could cause disruptions and create uncertainty to Arconic’s businesses, including affecting the business of and/or our relationships with Arconic’s customers and suppliers, as well as altering the relationship among tariffs and currencies, including the value of the British pound and the Euro relative to the U.S. dollar. Such disruptions and uncertainties could adversely affect Arconic’s financial condition, operating results and cash flows. In addition, Brexit could result in legal uncertainty and potentially divergent national laws and regulations as new legal relationships between the United Kingdom and the European Union are established. The ultimate effects of Brexit on Arconic will also depend on the terms of any agreements the United Kingdom and the European Union make to retain access to each other’s respective markets either during a transitional period or more permanently.

Arconic may not achieve some or all of the expected benefits of the Separation, and failure to realize such benefits in a timely manner may materially adversely affect Arconic’s business.

Arconic may be unable to achieve the full strategic and financial benefits expected to result from the Separation, or such benefits may be delayed or not occur at all. The Separation is expected to provide the following benefits, among others: (i) enabling the management of each company to pursue more effectively its own distinct operating priorities and strategies, to focus on strengthening its core business and its unique needs, and to pursue distinct and targeted opportunities for long-term growth and profitability; (ii) permitting each company to allocate its financial resources to meet the unique needs of its own business, allowing each company to intensify its focus on its distinct strategic priorities and to pursue more effectively its own distinct capital structures and capital allocation strategies; (iii) allowing each company to articulate more effectively a clear investment thesis to attract a long-term investor base suited to its business and providing investors with two distinct and targeted investment opportunities; (iv) creating an independent equity currency tracking each company’s underlying business, affording Arconic and Alcoa Corporation direct access to the capital markets and facilitating each company’s ability to consummate future acquisitions or other restructuring transactions utilizing its common stock; (v) allowing each company more consistent application of incentive structures and targets, due to the common nature of the underlying businesses; and (vi) separating and simplifying the structures required to manage two distinct and differing underlying businesses.

Arconic may not achieve these and other anticipated benefits for a variety of reasons, including, among others: (i) Arconic may be more susceptible to market fluctuations and other adverse events than if Alcoa Corporation were still a part of the Company because Arconic’s business is less diversified than it was prior to the completion of the Separation; and (ii) as a smaller, independent company, Arconic may be unable to obtain certain goods, services and technologies at prices or on terms as favorable as those it obtained prior to completion of the Separation. If Arconic fails to achieve some or all of the benefits expected to result from the Separation, or if such benefits are delayed, it could have a material adverse effect on Arconic’s competitive position, business, financial condition, results of operations and cash flows.

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Alcoa Corporation may fail to perform under various transaction agreements that were executed as part of the Separation.

In connection with the Separation, Arconic and Alcoa Corporation entered into a Separation and Distribution Agreement and also entered into various other agreements, including a Tax Matters Agreement, an Employee Matters Agreement, intellectual property license agreements, a metal supply agreement, real estate and office leases, a spare parts loan agreement and an agreement relating to the North American packaging business. The Separation and Distribution Agreement, the Tax Matters Agreement and the Employee Matters Agreement, together with the documents and agreements by which the internal reorganization of the Company prior to the Separation was effected, determined the allocation of assets and liabilities between the companies following the Separation for those respective areas and included any necessary indemnifications related to liabilities and obligations. Arconic will rely on Alcoa Corporation to satisfy its performance and payment obligations under these agreements. If Alcoa Corporation is unable or unwilling to satisfy its obligations under these agreements, including its indemnification obligations, we could incur operational difficulties and/or losses.

In connection with the Separation, Alcoa Corporation has agreed to indemnify Arconic for certain liabilities and Arconic has agreed to indemnify Alcoa Corporation for certain liabilities. If Arconic is required to pay under these indemnities to Alcoa Corporation, Arconic’s financial results could be negatively impacted. The Alcoa Corporation indemnity may be insufficient to hold Arconic harmless from the full amount of liabilities for which Alcoa Corporation will be allocated responsibility, and Alcoa Corporation may be unable to satisfy its indemnification obligations in the future.

Pursuant to the Separation and Distribution Agreement and certain other agreements with Alcoa Corporation, Alcoa Corporation has agreed to indemnify Arconic for certain liabilities, and Arconic has agreed to indemnify Alcoa Corporation for certain liabilities, in each case for uncapped amounts. Indemnities that Arconic may be required to provide Alcoa Corporation are not subject to any cap, may be significant and could negatively impact Arconic’s business. Third parties could also seek to hold Arconic responsible for any of the liabilities that Alcoa Corporation has agreed to retain. Any amounts Arconic is required to pay pursuant to these indemnification obligations and other liabilities could require Arconic to divert cash that would otherwise have been used in furtherance of the Company’s operating business. Further, the indemnity from Alcoa Corporation may be insufficient to protect Arconic against the full amount of such liabilities, and Alcoa Corporation may be unable to satisfy its indemnification obligations fully. Moreover, even if Arconic ultimately succeeds in recovering from Alcoa Corporation any amounts for which Arconic is held liable, Arconic may be temporarily required to bear such losses. Each of these risks could negatively affect Arconic’s business, results of operations and financial condition.

The Separation could result in substantial tax liability.

It was a condition to the Distribution that (i) the private letter ruling from the Internal Revenue Service (the “IRS”) regarding certain U.S. federal income tax matters relating to the Separation and the Distribution received by Arconic remain valid and be satisfactory to Arconic’s Board of Directors and (ii) Arconic receive an opinion of its outside counsel, satisfactory to the Board of Directors, regarding the qualification of the Distribution, together with certain related transactions, as a transaction that is generally tax-free, for U.S. federal income tax purposes, under Sections 355 and 368(a)(1)(D) of the Internal Revenue Code of 1986, as amended (the “Code”). Both of these conditions were satisfied prior to the Distribution. However, the IRS private letter ruling and the opinion of counsel were based upon and relied on, among other things, various facts and assumptions, as well as certain representations, statements and undertakings of Arconic and Alcoa Corporation, including those relating to the past and future conduct of Arconic and Alcoa Corporation. If any of these representations, statements or undertakings is, or becomes, inaccurate or incomplete, or if Arconic or Alcoa Corporation breaches any of its representations or covenants contained in any of the Separation- related agreements and documents or in any documents relating to the IRS private letter ruling and/or the opinion of counsel, the IRS private letter ruling and/or the opinion of counsel may be invalid and the conclusions reached therein could be jeopardized.

Notwithstanding Arconic’s receipt of the IRS private letter ruling and the opinion of counsel, the IRS could determine that the Distribution and/or certain related transactions should be treated as taxable transactions for U.S. federal income tax purposes if it determines that any of the representations, assumptions or undertakings upon which the IRS private letter ruling or the opinion of counsel was based are false or have been violated. In addition, the IRS private letter ruling does not address all of the issues that are relevant to determining whether the Distribution, together with certain related transactions, qualifies as a transaction that is generally tax-free for U.S. federal income tax purposes, and the opinion of counsel represents the judgment of such counsel and is not binding on the IRS or any court and the IRS or a court may disagree with the conclusions in the opinion of counsel. Accordingly, notwithstanding receipt by Arconic of the IRS private letter ruling and the opinion of counsel, there can be no assurance that the IRS will not assert that the Distribution and/or certain related transactions do not qualify for tax-free treatment for U.S. federal income tax purposes or that a court would not sustain such a challenge. In the

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event the IRS were to prevail with such challenge, Arconic, Alcoa Corporation and Arconic shareholders could be subject to significant U.S. federal income tax liability.

If the Distribution, together with certain related transactions, fails to qualify as a transaction that is generally tax-free, for U.S. federal income tax purposes, under Sections 355 and 368(a)(1)(D) of the Code, in general, for U.S. federal income tax purposes, Arconic would recognize taxable gain as if it had sold the Alcoa Corporation common stock in a taxable sale for its fair market value and Arconic shareholders who received Alcoa Corporation shares in the distribution would be subject to tax as if they had received a taxable distribution equal to the fair market value of such shares.

Under current U.S. federal income tax law, even if the Distribution, together with certain related transactions, otherwise qualifies for tax-free treatment under Sections 355 and 368(a)(1)(D) of the Code, the Distribution may nevertheless be rendered taxable to Arconic and its shareholders as a result of certain post-Distribution transactions, including certain acquisitions of shares or assets of Arconic or Alcoa Corporation. The possibility of rendering the Distribution taxable as a result of such transactions may limit Arconic’s ability to pursue certain equity issuances, strategic transactions or other transactions that would otherwise maximize the value of Arconic’s business. Under the Tax Matters Agreement that Arconic entered into with Alcoa Corporation, Alcoa Corporation may be required to indemnify Arconic against any additional taxes and related amounts resulting from (i) an acquisition of all or a portion of the equity securities or assets of Alcoa Corporation, whether by merger or otherwise (and regardless of whether Alcoa Corporation participated in or otherwise facilitated the acquisition), (ii) issuing equity securities beyond certain thresholds, (iii) repurchasing shares of Alcoa Corporation stock other than in certain open-market transactions, (iv) ceasing actively to conduct certain of its businesses, (v) other actions or failures to act by Alcoa Corporation or (vi) any of Alcoa Corporation’s representations, covenants or undertakings contained in any of the Separation-related agreements and documents or in any documents relating to the IRS private letter ruling and/or the opinion of counsel being incorrect or violated. However, the indemnity from Alcoa Corporation may be insufficient to protect Arconic against the full amount of such additional taxes or related liabilities, and Alcoa Corporation may be unable to satisfy its indemnification obligations fully. Moreover, even if Arconic ultimately succeeds in recovering from Alcoa Corporation any amounts for which Arconic is held liable, Arconic may be temporarily required to bear such losses. In addition, Arconic and Arconic’s subsidiaries may incur certain tax costs in connection with the Separation, including tax costs resulting from separations in non-U.S. jurisdictions, which may be material. Each of these risks could negatively affect Arconic’s business, results of operations and financial condition.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

Arconic’s principal office is located at 390 Park Avenue, New York, New York 10022-4608. Arconic’s corporate center is located at 201 Isabella Street, Pittsburgh, Pennsylvania 15212-5858. The Arconic Technology Center for research and development is located at 100 Technical Drive, New Kensington, Pennsylvania 15069-0001.

Arconic leases some of its facilities; however, it is the opinion of management that the leases do not materially affect the continued use of the properties or the properties’ values.

Arconic believes that its facilities are suitable and adequate for its operations. Although no title examination of properties owned by Arconic has been made for the purpose of this report, the Company knows of no material defects in title to any such properties. See Notes A and H to the financial statements for information on properties, plants and equipment.

Arconic has active plants and holdings under the following segments and in the following geographic areas:

ENGINEERED PRODUCTS AND SOLUTIONS

See the table and related text in the Engineered Products and Solutions Facilities section on page 6 of this report.

GLOBAL ROLLED PRODUCTS

See the table and related text in the Global Rolled Products Facilities section on page 8 of this report.

TRANSPORTATION AND CONSTRUCTION SOLUTIONS

See the table and related text in the Transportation and Construction Solutions section on page 9 of this report.

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Item 3. Legal Proceedings.

In the ordinary course of its business, Arconic is involved in a number of lawsuits and claims, both actual and potential.

Environmental Matters

Arconic is involved in proceedings under the Comprehensive Environmental Response, Compensation and Liability Act, also known as Superfund (CERCLA) or analogous state provisions regarding the usage, disposal, storage or treatment of hazardous substances at a number of sites in the U.S. The Company has committed to participate, or is engaged in negotiations with federal or state authorities relative to its alleged liability for participation, in clean-up efforts at several such sites. The most significant of these matters, the remediation of the Grasse River in Massena, NY, is discussed in the Environmental Matters section of Note K to the Consolidated Financial Statements under the caption “Environmental Matters” on page 84.

As previously reported, on June 21, 2017, the UK Environment Agency (the “Agency”) confirmed that it will prosecute Firth Rixson Metals Limited in Chesterfield (UK) Magistrates Court in relation to an environmental incident that took place on April 22, 2015 at the Company’s Glossop UK site. It is alleged that an acid scrubber unit at the site caused a leak into the local river resulting in environmental damage, including the death of approximately 200 fish. Arconic was not successful in persuading the Agency to drop the prosecution in lieu of an enforcement undertaking (a civil remedy) despite the fact that cyanide, a compound not used on the site, had been identified in the samples of water taken at the time. A hearing before the Court was held on September 13, 2017 at which Firth Rixson pled guilty to the underlying offense of allowing a release to occur to the nearby stream. A follow-up hearing was held on December 6, 2017 at which the Court accepted Firth Rixson’s guilty plea.  The Court categorized the Company’s level of culpability as negligent and the level of harm to the environment as level 2 (on a scale of 1 to 4 with 1 being the most serious). The Court fined Firth Rixson £80,000 (converted to approximately $108,355) plus costs of approximately £19,000 (converted to $25,734).  The Company paid the fine and costs and accordingly, this matter is now closed and no further reports will be made.

Reynobond PE

As previously reported, on June 13, 2017, the Grenfell Tower in London, UK caught fire resulting in fatalities, injuries and damage. A French subsidiary of Arconic, Arconic Architectural Products SAS (AAP SAS), supplied a product, Reynobond PE, to its customer, a cladding system fabricator, which used the product as one component of the overall cladding system on Grenfell Tower. The fabricator supplied its portion of the cladding system to the façade installer, who then completed and installed the system under the direction of the general contractor. Neither Arconic nor AAP SAS was involved in the design or installation of the system used at the Grenfell Tower, nor did it have a role in any other aspect of the building’s refurbishment or original design. Regulatory investigations into the overall Grenfell Tower matter are being conducted, including a criminal investigation by the London Metro Police, a Public Inquiry by the British government and a consumer protection inquiry by a French public authority. AAP SAS has sought and received core participant status in the Public Inquiry. The Company will no longer sell the PE product for architectural use on buildings.

Sullivan v. Arconic Inc. et al. A purported class action complaint was filed on July 18, 2017 in the United States District Court for the Southern District of New York against Arconic Inc., as well as two former Arconic executives and several current and former Arconic directors, and banks that acted as underwriters for Arconic’s September 18, 2014 preferred stock offering. The complaint alleges that statements in the registration statement for Arconic’s September 18, 2014 preferred stock offering were false and misleading in light of the subsequent Grenfell Tower fire. The complaint also alleges that Arconic’s failure to disclose at the time of the offering that it was obtaining significant profits through sales that exposed it to substantial liability violated the federal securities laws. The plaintiffs seek, among other things, unspecified compensatory and rescissory damages and an award of attorney and expert fees and expenses. On August 25, 2017, this case was dismissed by the plaintiff without prejudice and re-filed on September 15, 2017 in the United States District Court for the Western District of Pennsylvania. On February 7, 2018, on motion from certain putative class members, the court consolidated Sullivan and Howard v. Arconic Inc. et al., another case pending in the Western District of Pennsylvania (described below), and appointed lead plaintiffs in the consolidated case.

Howard v. Arconic Inc. et al. A purported class action complaint was filed on August 11, 2017 in the United States District Court for Western District of Pennsylvania against Arconic Inc., and Klaus Kleinfeld. The complaint alleges that Arconic and Mr. Kleinfeld made various false and misleading statements, and omitted to disclose material information, about the Company’s business and financial prospects and, specifically, the risks of the Reynobond PE product. The complaint alleges that the statements in Arconic’s Form 10-K for the fiscal years ended December 31, 2012, 2013, 2014, 2015 and 2016, its 2012, 2013, 2014, 2015 and 2016 Annual Reports, and its 2016 Annual Highlights Report about management’s recognition of its responsibility to conduct the Company’s affairs according to the highest standards of personal and corporate conduct and within the laws of the host countries in which it operates, and its failure to disclose that Arconic knowingly supplied highly flammable Reynobond PE cladding panels for use in construction that significantly increased the risk of property damage, injury and death, were false and misleading in violation of the federal securities laws and artificially inflated the prices of Arconic’s

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securities. The plaintiffs seek, among other things, unspecified compensatory damages and an award of attorney and expert fees and expenses. On February 7, 2018, on motion from certain putative class members, the court consolidated Howard and Sullivan v. Arconic Inc. et al., another case pending in the Western District of Pennsylvania (described above), and appointed lead plaintiffs in the consolidated case.

While the Company believes that these cases are without merit and intends to challenge them vigorously, there can be no assurances regarding the ultimate resolution of these matters. Given the preliminary nature of these matters and the uncertainty of litigation, the Company cannot reasonably estimate at this time the likelihood of an unfavorable outcome or the possible loss or range of losses in the event of an unfavorable outcome. The Board of Directors has also received letters, purportedly sent on behalf of shareholders, reciting allegations similar to those made in the federal court lawsuits and demanding that the Board authorize the Company to initiate litigation against members of management, the Board and others. The Board of Directors has appointed a Special Litigation Committee of the Board to review these shareholder demand letters and consider the appropriate course of action. In addition, lawsuits are pending in state court in New York and federal court in Pennsylvania, initiated, respectively, by another purported shareholder and by the Company, concerning the shareholder’s claimed right, which the Company contests, to inspect the Company’s books and records related to the Grenfell Tower fire and Reynobond PE.

Other Matters

As previously reported, Arconic Inc. and its subsidiaries and former subsidiaries are defendants in lawsuits filed on behalf of persons alleging injury as a result of occupational or other exposure to asbestos. Arconic, its subsidiaries and former subsidiaries have numerous insurance policies over many years that provide coverage for asbestos related claims. Arconic has significant insurance coverage and believes that Arconic’s reserves are adequate for its known asbestos exposure related liabilities. The costs of defense and settlement have not been and are not expected to be material to the results of operations, cash flows, and financial position of the Company.

Tax

Pursuant to the Tax Matters Agreement, dated as of October 31, 2016, entered into between the Company and Alcoa Corporation in connection with the Separation, the Company shares responsibility with Alcoa Corporation for, and Alcoa Corporation has agreed to partially indemnify the Company with respect to, the following matter.

As previously reported, in September 2010, following a corporate income tax audit covering the 2003 through 2005 tax years, an assessment was received as a result of Spain’s tax authorities disallowing certain interest deductions claimed by a Spanish consolidated tax group owned by the Company. An appeal of this assessment in Spain’s Central Tax Administrative Court by the Company was denied in October 2013. In December 2013, the Company filed an appeal of the assessment in Spain’s National Court.

On January 16, 2017, Spain’s National Court issued a decision in favor of the Company related to the assessment received in September 2010. The Spanish Tax Administration did not file an appeal within the applicable period. Based on this decision and recent confirming correspondence from the Spanish Tax Administration, the matter is now closed. The Company will not be responsible for any assessment related to the 2003 through 2005 tax years.

Additionally, following a corporate income tax audit of the same Spanish tax group for the 2006 through 2009 tax years, Spain’s tax authorities issued an assessment in July 2013, similarly disallowing certain interest deductions. In August 2013, the Company filed an appeal of this second assessment in Spain’s Central Tax Administrative Court, which was denied in January 2015. The Company filed an appeal of this second assessment in Spain’s National Court in March 2015. Spain’s National Court has not yet rendered a decision related to the assessment received in July 2013. The assessment for the 2006 through 2009 tax years is $155 million (€130 million), including interest.

The Company believes it has meritorious arguments to support its tax position and intends to vigorously litigate the assessments through Spain’s court system. However, in the event the Company is unsuccessful, a portion of the assessments may be offset with existing net operating losses available to the Spanish consolidated tax group, which would be shared between the Company and Alcoa Corporation as provided for in the Tax Matters Agreement. Additionally, while the tax years 2010 through 2013 are closed to audit, it is possible that the Company may receive similar assessments for tax years subsequent to 2013. At this time, the Company is unable to reasonably predict an ultimate outcome for this matter.

Matters Previously Reported – Alcoa Corporation

We have included the matters discussed below in which the Company remains party to proceedings relating to Alcoa Corporation in accordance with SEC regulations. The Separation and Distribution Agreement, dated October 31, 2016, entered into between the Company and Alcoa Corporation in connection with the Separation, provides for cross-indemnities between

29

the Company and Alcoa Corporation for claims subject to indemnification. The Company does not expect any of such matters to result in a net claim against it.

St. Croix Proceedings

Abednego and Abraham cases.As previously reported, on January 14, 2010, Arconic was served with a multi-plaintiff action complaint involving several thousand individual persons claiming to be residents of St. Croix who are alleged to have suffered personal injury or property damage from Hurricane Georges or winds blowing material from the St. Croix Alumina, L.L.C. (“SCA”) facility on the island of St. Croix (U.S. Virgin Islands) since the time of the hurricane. This complaint, Abednego, et al. v. Alcoa, et al. was filed in the Superior Court of the Virgin Islands, St. Croix Division. Following an unsuccessful attempt by Arconic and SCA to remove the case to federal court, the case has been lodged in the Superior Court. The complaint names as defendants the same entities that were sued in a February 1999 action arising out of the impact of Hurricane Georges on the island and added as a defendant the current owner of the alumina facility property.

Also as previously reported, on March 1, 2012, Arconic was served with a separate multi-plaintiff action complaint involving approximately 200 individual persons alleging claims essentially identical to those set forth in the Abednego v. Alcoa complaint. This complaint, Abraham, et al. v. Alcoa, et al., was filed on behalf of plaintiffs previously dismissed in the federal court proceeding involving the original litigation over Hurricane Georges impacts. The matter was originally filed in the Superior Court of the Virgin Islands, St. Croix Division, on March 30, 2011.

Arconic and other defendants in the Abraham and Abednego cases filed or renewed motions to dismiss each case in March 2012 and August 2012 following service of the Abraham complaint on Arconic and remand of the Abednego complaint to Superior Court, respectively. By order dated August 10, 2015, the Superior Court dismissed plaintiffs’ complaints without prejudice to re-file the complaints individually, rather than as a multi-plaintiff filing. The order also preserves the defendants’ grounds for dismissal if new, individual complaints are filed. On July 7, 2017, the Court issued an order and associated memoranda on plaintiff’s multiple motions for extension of time to file the individual Complaints. Following the court’s July 7, 2017 order, a total of 429 complaints were filed and accepted by the court by the deadline of July 30, 2017 (and consolidated into the Red Dust Claims docket (Master Case No.: SX-15-CV-620)). These complaints include claims of about 1,260 individual plaintiffs. As a result of the devastation caused by two hurricanes, court operations were suspended until very recently. On December 11, 2017, the court issued a new scheduling order and further set a scheduling conference for January 18, 2018. At that conference, the court set the next status conference for late July 2018.

Other Contingencies

In addition to the matters discussed above, various other lawsuits, claims, and proceedings have been or may be instituted or asserted against Arconic, including those pertaining to environmental, product liability, safety and health, employment and tax matters. While the amounts claimed in these other matters may be substantial, the ultimate liability cannot currently be determined because of the considerable uncertainties that exist. Therefore, it is possible that the Company’s liquidity or results of operations in a particular period could be materially affected by one or more of these other matters. However, based on facts currently available, management believes that the disposition of these other matters that are pending or asserted will not have a material adverse effect, individually or in the aggregate, on the results of operations, financial position, or cash flows of the Company.

Item 4. Mine Safety Disclosures.

Not applicable.

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PART II

Item 5.   Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

The Company’s common stock is listed on the New York Stock Exchange. Prior to the Separation of Alcoa Corporation from the Company, the Company’s common stock traded under the symbol “AA.” In connection with the separation, on November 1, 2016, the Company changed its stock symbol and its common stock began trading under the symbol “ARNC.”

On October 5, 2016, the Company’s common shareholders approved a 1-for-3 reverse stock split of the Company’s outstanding and authorized shares of common stock (the “Reverse Stock Split”). As a result of the Reverse Stock Split, every three shares of issued and outstanding common stock were combined into one issued and outstanding share of common stock, without any change in the par value per share. The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares, and proportionately decreased the number of authorized shares of common stock from 1.8 billion to 0.6 billion shares. The Company’s common stock began trading on a Reverse Stock Split-adjusted basis on October 6, 2016.

On November 1, 2016, the Company completed the Separation of its business into two independent, publicly traded companies: the Company and Alcoa Corporation. The Separation was effected by means of a pro rata distribution by the Company of 80.1% of the outstanding shares of Alcoa Corporation common stock to the Company’s shareholders. The Company’s shareholders of record as of the close of business on October 20, 2016 (the “Record Date”) received one share of Alcoa Corporation common stock for every three shares of the Company’s common stock held as of the Record Date. The Company retained 19.9% of the outstanding common stock of Alcoa Corporation immediately following the Separation. See disposition of retained shares in Note C to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K.

The following table sets forth, for the periods indicated, the high and low sales prices and quarterly dividend amounts per share of the Company’s common stock as reported on the New York Stock Exchange, adjusted to take into account the Reverse Stock Split effected on October 6, 2016. The prices listed below for those dates prior to November 1, 2016 reflect stock trading prices of Alcoa Inc. prior to the Separation of Alcoa Corporation from the Company on November 1, 2016, and therefore are not comparable to the Company’s post-Separation prices.

	2017						2016
Quarter	High		Low		Dividend		High		Low		Dividend
First	$	30.69	$	18.64	$	0.06	$	30.66	$	18.42	$	0.09
Second	28.65		21.76		0.06		34.50		26.34		0.09
Third	26.84		22.67		0.06		32.91		27.09		0.09
Fourth (Separation occurred on November 1, 2016)	27.85		22.74		0.06		32.10		16.75		0.09
Year	$	30.69	$	18.64	$	0.24	$	34.50	$	16.75	$	0.36

The number of holders of record of common stock was approximately 12,271 as of February 16, 2018.

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Stock Performance Graph

The following graph compares the most recent five-year performance of the Company’s common stock with (1) the Standard & Poor’s 500^® Index and (2) the Standard & Poor’s 500^® Materials Index, a group of 25 companies categorized by Standard & Poor’s as active in the “materials” market sector. The graph assumes, in each case, an initial investment of $100 on December 31, 2012, and the reinvestment of dividends. Historical prices prior to the separation of Alcoa Corporation from the Company on November 1, 2016, have been adjusted to reflect the value of the Separation transaction. The graph, table and related information shall not be deemed to be “filed” with the SEC, nor shall such information be incorporated by reference into future filings under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that the Company specifically incorporates it by reference into such filing.

Copyright© 2018 Standard & Poor's, a division of S&P Global. All rights reserved. 

As of December 31,	2012		2013		2014		2015		2016		2017
Arconic Inc.	$	100	$	124.15	$	186.02	$	117.48	$	99.40	$	147.47
S&P 500® Index	100		132.39		150.51		152.59		170.84		208.14
S&P 500® Materials Index	100		125.60		134.28		123.03		143.56		177.79

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Item 6. Selected Financial Data.

The separation of Alcoa Inc. into two standalone, publicly-traded companies, Arconic Inc. (the new name for Alcoa Inc.) and Alcoa Corporation, became effective on November 1, 2016 (the “Separation Transaction”). The financial results of Alcoa Corporation for all periods prior to the Separation Transaction have been retrospectively reflected in the Statement of Consolidated Operations as discontinued operations and, as such, have been excluded from continuing operations and segment results for 2016 and all prior periods presented prior to the Separation Transaction. The cash flows related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows for 2016 and all prior periods presented.

(dollars in millions, except per-share amounts)

For the year ended December 31,	2017			2016			2015			2014			2013
Sales	$	12,960		$	12,394		$	12,413		$	12,542		$	11,997
Amounts attributable to Arconic:
Loss from continuing operations(1)	$	(74	)	$	(1,062	)	$	(157	)	$	(61	)	$	(63	)
Income (loss) from discontinued operations(2)	—			121			(165		)	329			(2,222		)
Net (loss) income	$	(74	)	$	(941	)	$	(322	)	$	268		$	(2,285	)
(Loss) earnings per share attributable to Arconic common shareholders:(3)
Basic:
Loss from continuing operations	$	(0.28	)	$	(2.58	)	$	(0.54	)	$	(0.21	)	$	(0.18	)
Income (loss) from discontinued operations	—			0.27			(0.39		)	0.85			(6.23		)
Net (loss) income	$	(0.28	)	$	(2.31	)	$	(0.93	)	$	0.64		$	(6.41	)
Diluted:
Loss from continuing operations	$	(0.28	)	$	(2.58	)	$	(0.54	)	$	(0.21	)	$	(0.18	)
Income (loss) from discontinued operations	—			0.27			(0.39		)	0.84			(6.23		)
Net (loss) income	$	(0.28	)	$	(2.31	)	$	(0.93	)	$	0.63		$	(6.41	)
Cash dividends declared per common share(3)	$	0.24		$	0.36		$	0.36		$	0.36		$	0.36
Total assets	18,718			20,038			36,477			37,298			35,623
Total debt	6,844			8,084			8,827			8,445			7,826
Cash provided from operations(4)	701			870			1,582			1,674			1,578
Capital expenditures:
Capital expenditures—continuing operations	596			827			789			775			626
Capital expenditures—discontinued operations	—			298			391			444			567
Total capital expenditures	$	596		$	1,125		$	1,180		$	1,219		$	1,193

⁽¹⁾  Calculated from the accompanying Statement of Consolidated Operations as Loss from continuing operations after income taxes less Net income from continuing operations attributable to noncontrolling interests.

⁽²⁾  Calculated from the accompanying Statement of Consolidated Operations as Income (loss) from discontinued operations after income taxes less Net income from discontinued operations attributable to noncontrolling interests.

⁽³⁾  Per share data for all periods presented has been retroactively restated to reflect the 1-for-3 reverse stock split which became effective on October 6, 2016 (see Note O to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K).

⁽⁴⁾  Cash provided from operations has not been restated for discontinued operations presentation for 2016 and all prior periods presented (see Basis of Presentation section of Note A to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K).

The data presented in the Selected Financial Data table should be read in conjunction with the information provided in Management’s Discussion and Analysis of Financial Condition and Results of Operations in Part II Item 7 and the Consolidated Financial Statements and Notes in Part II Item 8 of this Form 10-K.

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

(dollars in millions, except per-share amounts and aluminum prices; shipments in thousands of metric tons [kmt])

Overview

Our Business

Arconic (“Arconic” or the “Company”) is a global leader in lightweight metals engineering and manufacturing. Arconic’s innovative, multi-material products, which include aluminum, titanium, and nickel, are used worldwide in aerospace, automotive, commercial transportation, packaging, building and construction, oil and gas, defense, consumer electronics, and industrial applications.

Arconic is a global company operating in 18 countries. Based upon the country where the point of sale occurred, the United States and Europe generated 63% and 26%, respectively, of Arconic’s sales in 2017. In addition, Arconic has operating activities in Brazil, Canada, China, Japan, and Russia, among others. Governmental policies, laws and regulations, and other economic factors, including inflation and fluctuations in foreign currency exchange rates and interest rates, affect the results of operations in these countries.

Management Review of 2017 and Outlook for the Future

In 2017, Arconic’s revenues increased 5% over 2016 as a result of higher volumes across all segments including strong volume growth in our aerospace, automotive, and commercial transportation markets, and higher aluminum pricing primarily impacting the Global Rolled Products segment, partially offset by the planned ramp down and Toll Processing and Services Agreement (the “Toll Processing Agreement”) relating to the Company’s North America packaging business in Tennessee, and unfavorable product pricing and mix. In the segments, Adjusted EBITDA increased over 2016 as a result of the aforementioned higher volumes and continued focus on net cost savings that more than offset negative factors including product pricing pressures, ramp up costs associated with new aerospace engine parts, aerospace customer inventory destocking and reduced build rates, and higher aluminum prices.

Loss from continuing operations after income taxes was $74 in 2017 compared to $1,062 in 2016. There were several significant items that impacted the fourth quarter of 2017. The Company recorded a charge of $719 ($719 pre-tax) associated with the impairment of goodwill in the forgings and extrusions business and a charge of $41 ($41 pre-tax) for the impairment of assets in the Latin America extrusions business in conjunction with an agreement to sell the business. Also in the fourth quarter of 2017, the Company recorded income of $97 ($106 pre-tax) associated with the reversal of liabilities for a contingent earn-out and a separation-related guarantee. The Company was also impacted by the Tax Cuts and Jobs Act enacted on December 22, 2017 (“the 2017 Act”), and recorded a provisional charge of $272 associated with the revaluation of U.S. net deferred tax assets due to a decrease in the U.S. corporate tax rate from 35% to 21%, as well as a one-time transition tax on the non-previously taxed earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017. The impact of the 2017 Act provisions will be updated over the course of 2018, in accordance with guidance issued by the Securities and Exchange Commission which has provided a one-year measurement period to finalize the accounting impacts of the new legislation, and as additional guidance is issued and the new law is further analyzed.

Additionally during 2017, the Company disposed of its retained interest in Alcoa Corporation common stock and recorded gains of $405 ($518 pre-tax), and the Company redeemed debt of $1,250, recording charges of $49 ($76 pre-tax) primarily for the premium paid for the early redemption of the debt. See discussion that follows under Results of Operations below for further information on 2017 results.

Management continued its focus on liquidity and cash flows as well as improving its operating performance through cost reductions, streamlined organizational structures, margin enhancement, and profitable revenue generation. Management has also intensified its focus on capital efficiency. This focus and the related results enabled Arconic to end 2017 with a solid financial position.

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The following financial information reflects certain key measures of Arconic’s 2017 results:

• Sales of $12,960 and Net loss of $74, or 0.28 per diluted share;

• Consolidated adjusted EBITDA of $1,761, an increase of 17% from 2016¹;

• Cash from operations of $701;

• Capital expenditures of $596;

• Cash on hand at the end of the year of $2,150; and

• Total debt of $6,844, a decrease in total debt of $1,240 from 2016.

⁽¹⁾ For the reconciliation of Net loss attributable to Arconic to Consolidated adjusted EBITDA and related information, see page 45.

In 2018, management projects that sales will be up 3% to 6% based on volume and share gains, as well as higher aluminum prices. In aerospace, it is anticipated that the favorable impact of share gains on new platforms and engines will be somewhat offset by lower pricing and the mix of wide-body and narrow-body aircraft produced. Management also expects strong growth in automotive sheet and commercial transportation markets, particularly due to North American and European heavy-duty truck production increases, while the industrial gas turbine market will continue declining throughout 2018.

Looking ahead over the next year, management will continue to focus on improving operating performance through cost reductions, margin enhancement, and profitable revenue generation. As part of this effort, the Company made the decision to freeze its U.S. defined benefit pension plans for all U.S.-based salaried and non-bargained hourly employees effective April 1, 2018, and the Company intends to relocate its global headquarters by the end of 2018 out of New York City to a more cost-effective location. Management has initiated a review of the Company’s strategy and portfolio. Additionally, each of the segments are projected to achieve net cost savings in 2018. As a result, adjusted earnings per share is anticipated to increase and free cash flow is also expected to improve in 2018 through increased focus on driving operational improvements and working capital efficiency.

To further enhance the Company’s financial position and return capital to shareholders, Arconic’s Board of Directors authorized a share repurchase program of up to $500 of its outstanding common stock and a $500 early debt reduction. Under the share repurchase program, the Company may repurchase shares from time to time, in amounts, at prices, and at such times as the Company deems appropriate. Repurchases will be subject to market conditions, legal requirements and other considerations. The Company is not obligated to repurchase any specific number of shares or to do so at any particular time, and the share repurchase program may be suspended, modified or terminated at any time without prior notice. For the early debt reduction, Arconic intends to redeem in March 2018 all of its outstanding 5.72% Notes due in 2019.

Beginning in the first quarter of 2018, the Company's primary measure of segment performance will change from Adjusted EBITDA to Operating income, which more closely aligns segment performance with Operating income as presented in the Statement of Consolidated Operations. As part of this change, LIFO and metal price lag will be included in the Operating income of the segments.

In conjunction with the implementation of the new accounting guidance on changes to the classification of certain cash receipts and cash payments within the statement of cash flows (effective January 1, 2018 and to be applied retrospectively), specifically as it relates to the requirement to reclassify cash received from net sales of beneficial interest in sold receivables from Cash from operations to Cash provided from investing activities, the Company has changed the calculation of its measure of free cash flow to Cash from operations plus cash received from net sales of beneficial interest in sold receivables, less Capital expenditures. This change to our measure of free cash flow is being implemented to ensure consistent presentation of this measure across all historical periods, once the required accounting guidance reclassification is reflected in our financial results beginning in the first quarter of 2018. The adoption of this accounting change does not reflect a change in our underlying business or activities.

2016 Separation Transaction. On November 1, 2016, the Company completed the separation of its business into two standalone, publicly-traded companies, Arconic Inc. and Alcoa Corporation. Following the Separation Transaction, Arconic comprises the Global Rolled Products (other than the rolling mill in Warrick, Indiana, and the 25.1% equity ownership stake in the Ma’aden Rolling Company), the Engineered Products and Solutions, and the Transportation and Construction Solutions segments. Alcoa Corporation comprises the Alumina and Primary Metals segments, the rolling mill in Warrick, Indiana, and the 25.1% equity ownership stake in the Ma’aden Rolling Company in Saudi Arabia.

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The Separation Transaction was effected by the distribution of 80.1% of the outstanding shares of Alcoa Corporation common stock to the Company’s shareholders (the “Distribution”). The Company’s shareholders of record as of the close of business on October 20, 2016 (the “Record Date”) received one share of Alcoa Corporation common stock for every three shares of the Company’s common stock held as of the Record Date. The Company distributed 146,159,428 shares of common stock of Alcoa Corporation in the Distribution and retained 36,311,767 shares, or approximately 19.9% (see disposition of retained shares under Results of Operations below), of the common stock of Alcoa Corporation immediately following the Distribution. As a result of the Distribution, Alcoa Corporation is now an independent public company trading under the symbol “AA” on the New York Stock Exchange, and the Company trades under the symbol “ARNC” on the New York Stock Exchange.

On October 31, 2016, Arconic entered into several agreements with Alcoa Corporation that govern the relationship of the parties following the completion of the Separation Transaction. These agreements include the following: Separation and Distribution Agreement, Transition Services Agreement, Tax Matters Agreement, Employee Matters Agreement, Alcoa Corporation to Arconic Inc. Patent, Know-How, and Trade Secret License Agreement, Arconic Inc. to Alcoa Corporation Patent, Know-How, and Trade Secret License Agreement, Alcoa Corporation to Arconic Inc. Trademark License Agreement, Toll Processing and Services Agreement, Master Agreement for the Supply of Primary Aluminum, Massena Lease and Operations Agreement, Fusina Lease and Operations Agreement, and Stockholder and Registration Rights Agreement.

Results of Operations

Earnings Summary

Sales—Sales for 2017 were $12,960 compared with sales of $12,394 in 2016, an increase of $566, or 5%. The increase was the result of strong volume growth in all segments and higher aluminum pricing, partially offset by the planned ramp down and Toll Processing Agreement relating to the Company’s North America packaging business in Tennessee in the Global Rolled Products segment, as well as unfavorable product pricing in both the Engineered Products and Solutions and Global Rolled Products segments. Pursuant to the Toll Processing Agreement that Arconic entered into with Alcoa Corporation on October 31, 2016 in connection with the Separation Transaction, Arconic provides can body stock to Alcoa Corporation using aluminum supplied by Alcoa Corporation, resulting in the absence of metal sales in 2017 compared to 2016.

Sales for 2016 were $12,394 compared with sales of $12,413 in 2015, a decline of $19, or less than 1%. The relatively flat performance was the result of a full-year effect of two 2015 acquisitions in the Engineered Products and Solutions segment and automotive volume increases in the Global Rolled Products segment, which were more than offset by the ramp-down of the Tennessee packaging business and the impact of aluminum prices in the Global Rolled Products segment and unfavorable product price and mix across all segments.

Cost of Goods Sold (COGS)—COGS as a percentage of Sales was 79.9% in 2017 compared with 79.2% in 2016. The increase was primarily attributable to cost increases, including net higher aluminum prices of $84 and ramp-up costs related to new commercial aerospace engines, and a lower margin product mix, partially offset by net cost savings.

COGS as a percentage of Sales was 79.2% in 2016 compared with 81.4% in 2015. The primary drivers in the improvement in COGS as a percentage of sales were productivity gains across all segments and higher volume in the Engineered Products and Solutions segment due to the benefit of a full-year effect of two 2015 acquisitions. This benefit was somewhat offset by overall cost increases across all segments and unfavorable product pricing and mix impacts primarily in the Engineered Products and Solutions and Global Rolled Products segments.

Selling, General Administrative, and Other Expenses (SG&A) — SG&A expenses were $731, or 5.6% of Sales, in 2017 compared with $942, or 7.6% of Sales, in 2016. The decrease in SG&A was the result of expenses related to the Separation Transaction of $193 in 2016 compared to $18 in 2017, as well as ongoing overhead cost reduction efforts (see Restructuring and Other Charges below), partially offset by proxy, advisory and governance-related costs of $58, external legal and other advisory costs related to Grenfell Tower of $14 and costs associated with the Company’s Delaware reincorporation of $3 in 2017.

,

SG&A expenses were $942, or 7.6% of Sales, in 2016 compared with $765, or 6.2% of Sales, in 2015. The increase in SG&A was primarily due to costs related to the Separation Transaction of $193 in 2016, an increase of $169 from 2015 separation costs.

Research and Development Expenses (R&D)—R&D expenses were $111 in 2017 compared with $132 in 2016 and $169 in 2015. The decrease in 2017 as compared to 2016 was driven by lower spending. The decrease in 2016 as compared to 2015 was driven by the decrease in spending for the Micromill™ in San Antonio, TX which was completed in 2015 and began production of automotive sheet, on a limited basis, for the Global Rolled Products segment.

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Provision for Depreciation and Amortization (D&A)—The provision for D&A was $551 in 2017 compared with $535 in 2016. The increase of $16, or 3%, was primarily due to capital projects placed into service. The provision for D&A was $535 in 2016 compared with $508 in 2015. The increase of $27 related to a full year of D&A related to two acquisitions which occurred during 2015 (see Engineered Products and Solutions under Segment Information below).

Impairment of Goodwill—In 2017, the Company recognized an impairment of goodwill of $719, related to the annual impairment review of the Arconic Forgings and Extrusions business. In 2015, the Company recognized an impairment of goodwill of $25 related to the annual impairment review of the soft alloy extrusion business in Brazil. See Goodwill under Critical Accounting Policies and Estimates below.

Restructuring and Other Charges—Restructuring and other charges for each year in the three-year period ended December 31, 2017 were comprised of the following:

	2017			2016			2015
Asset impairments	$	58		$	80		$	—
Layoff costs	64			70			97
Net loss on divestitures of businesses	57			3			136
Other	(3		)	27			(11		)
Reversals of previously recorded layoff costs	(11		)	(25		)	(8		)
Restructuring and other charges	$	165		$	155		$	214

Layoff costs were recorded based on approved detailed action plans submitted by the operating locations that specified positions to be eliminated, benefits to be paid under existing severance plans, union contracts or statutory requirements, and the expected timetable for completion of the plans.

2017 Actions. In 2017, Arconic recorded Restructuring and other charges of $165 ($143 after-tax), which were comprised of the following components: $69 ($47 after-tax) for layoff costs related to cost reduction initiatives including the separation of approximately 880 employees (400 in the Engineered Products and Solutions segment, 245 in the Global Rolled Products segment, 135 in the Transportation and Construction Solutions segment and 100 in Corporate), a charge of $60 ($60 after-tax) related to the sale of the Fusina, Italy rolling mill; a charge of $41 ($41 after-tax) for the impairment of assets associated with the agreement to sell the Latin America Extrusions business (see Note F to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K); a net benefit of $6 ($4 after-tax), for the reversal of forfeited executive stock compensation of $13, partially offset by a charge of $7 for the related severance; a net charge of $12 ($7 after-tax) for other miscellaneous items; and a favorable benefit of $11 ($8 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, approximately 300 of the 880 employees were separated. The remaining separations for 2017 restructuring programs are expected to be completed by the end of 2018. In 2017, cash payments of $28 were made against layoff reserves related to 2017 restructuring programs.

2016 Actions. In 2016, Arconic recorded Restructuring and other charges of $155 ($114 after-tax), which were comprised of the following components: $57 ($46 after-tax) for costs related to the exit of certain legacy Firth Rixson operations in the U.K.; $37 ($24 after-tax) for exit costs related to the decision to permanently shut down a can sheet facility; $20 ($14 after-tax) for costs related to the closures of five facilities, primarily in the Transportation and Construction Solutions segment and Engineered Products and Solutions segment, including the separation of approximately 280 employees; $53 ($33 after-tax) for other layoff costs, including the separation of approximately 1,315 employees (1,045 in the Engineered Products and Solutions segment, 210 in Corporate, 30 in the Global Rolled Products segment and 30 in the Transportation and Construction Solutions segment); $11 ($8 after-tax) for other miscellaneous items, including $3 ($2 after-tax) for the sale of Remmele Medical; $2 ($1 after-tax) for a pension settlement; and $25 ($12 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

In 2016, management made the decision to exit certain legacy Firth Rixson facilities in the U.K. Costs related to these actions included asset impairments and accelerated depreciation of $51; other exit costs of $4; and $2 for the separation of 60 employees.

Also in 2016, management approved the shutdown and demolition of the can sheet facility in Tennessee upon completion of the Toll Processing Agreement with Alcoa Corporation (see Global Rolled Products under Segment Information below). Costs related to this action included $21 in asset impairments; $9 in other exit costs; and $7 for the separation of 145 employees. The other exit costs of $9 represent $4 in asset retirement obligations and $3 in environmental remediation, both of which were triggered by the decision to permanently shut down and demolish the can sheet facility in Tennessee, and $2 in other exit costs.

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As of December 31, 2017, approximately 1,280 of the 1,700 (previously 1,750) employees were separated. The total number of employees associated with 2016 restructuring programs was updated to reflect employees, who were initially identified for separation, accepting other positions within Arconic and natural attrition. The remaining separations for 2016 restructuring programs are expected to be completed by the end of 2018.In 2017 and 2016, cash payments of $26 and $16 were made against layoff reserves related to 2016 restructuring programs.

2015 Actions. In 2015, Arconic recorded Restructuring and other charges of $214 ($192 after-tax), which were comprised of the following components: a $136 ($134 after-tax) net loss related to the March 2015 divestiture of a rolling mill in Russia and post-closing adjustments associated with the December 2014 divestitures of three rolling mills located in Spain and France; $97 ($70 after-tax) for layoff costs, including the separation of approximately 1,505 employees (590 in the Engineered Products and Solutions segment, 425 in the Transportation and Construction Solutions segment, 400 in Corporate, and 90 in the Global Rolled Products segment); an $18 ($13 after-tax) gain on the sale of land related to one of the rolling mills in Australia that was permanently closed in December 2014; a net charge of $7 ($4 after-tax) for other miscellaneous items; and $8 ($3 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, the separations associated with the 2015 restructuring programs were essentially complete. In 2017, 2016 and 2015, cash payments of $5, $55 and $18, respectively, were made against layoff reserves related to 2015 restructuring programs.

Arconic does not include Restructuring and other charges in the results of its reportable segments. The pre-tax impact of allocating such charges to segment results would have been as follows:

	2017		2016		2015
Engineered Products and Solutions	$	30	$	78	$	46
Global Rolled Products	72		40		121
Transportation and Construction Solutions	52		14		8
Segment total	154		132		175
Corporate	11		23		39
Total restructuring and other charges	$	165	$	155	$	214

Interest Expense—Interest expense was $496 in 2017 compared with $499 in 2016. The decrease of $3, or 1%, was primarily due to lower interest expense resulting from lower outstanding debt, mostly offset by $73 primarily in higher premiums paid in 2017 related to the early redemption of $1,250 in debt. In the second quarter of 2017, Arconic redeemed all of the Company’s 6.50% Bonds due 2018 and 6.75% Notes due 2018, and a portion of the Company’s 5.72% Notes due 2019 in advance of the respective maturity dates.

Interest expense was $499 in 2016 compared with $473 in 2015. The increase of $26, or 5%, was primarily due to debt issuance costs of $9 that were expensed in connection with the Separation Transaction and costs associated with the early redemption of $750 of 5.55% Notes due February 2017, completed on December 30, 2016, which included a $3 purchase premium, and a full-year of interest related to RTI International Metals, Inc. (RTI) debt of $6.

Other Income, Net—Other income, net was $640 in 2017 compared with $94 in 2016. The increase of $546 wasprimarily due to the gain on the sale of a portion of Arconic’s investment in Alcoa Corporation common stock of $351 (in February 2017, the Company sold 23,353,000 shares of Alcoa Corporation stock at $38.03 per share, which resulted in cash proceeds of $888 and a gain of $351) and the gain of $167 on the Debt-for-Equity Exchange (in April and May 2017, the Company acquired a portion of its outstanding notes held by two investment banks (the “Investment Banks”) in exchange for cash and the Company’s remaining 12,958,767 shares (valued at $35.91 per share) in Alcoa Corporation stock and recorded a gain of $167), income of $25 associated with a higher reversal of a contingent earn-out liability related to the Firth Rixson acquisition (see Note F to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K for additional information), and income of $25 due to the reversal of a liability associated with a separation-related guarantee. The Company was required to provide a guarantee for an Alcoa Corporation electricity contract in the event of an Alcoa Corporation payment default. In the fourth quarter of 2017, Alcoa Corporation announced that it had terminated the electricity contract at its Rockdale Operations and, as a result, Arconic reversed its associated guarantee liability.

Other income, net was $94 in 2016 compared with $28 in 2015. The increase of $66 was mainly the result of a favorable adjustment to the contingent earn-out liability and a post-closing adjustment, both of which related to the acquisition of Firth Rixson of $76, and favorable foreign currency movements of $55. These items were partially offset by the absence of gains on the sales of land in the United States and an equity investment in a China rolling mill of $38 in 2015.

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Income Taxes—Arconic’s effective tax rate was 115.7% in 2017 compared with the U.S. federal statutory rate of 35%. The effective tax rate primarily differs from the U.S. federal statutory rate as a result of a $719 impairment of goodwill, a $41 impairment of assets in the Latin America extrusions business, and a $60 charge related to the sale of a rolling mill in Italy that are nondeductible for income tax purposes, a $272 tax charge as a provisional impact of the 2017 Act, and a $23 tax charge for an increase in an uncertain tax position in Germany, partially offset by a $73 tax benefit related to the sale and Debt-for-Equity Exchange of the Alcoa Corporation stock, a $69 tax benefit for the release of U.S. state valuation allowances net of the federal tax benefit, a $27 favorable tax impact associated with a non-taxable earn-out liability adjustment in connection with the Firth Rixson acquisition, and by foreign income taxed in lower rate jurisdictions.

Arconic’s effective tax rate was 356.5% in 2016 compared with the U.S. federal statutory rate of 35%. The effective tax rate differs from the U.S. federal statutory rate primarily due to a $1,267 discrete income tax charge for valuation allowances related to the Separation Transaction (see Income Taxes under Critical Accounting Policies and Estimates below), a $95 tax charge associated with the redemption of company-owned life insurance policies whose tax basis was less than the redemption amount resulting in a taxable gain, a $51 net charge for the remeasurement of certain deferred tax assets and liabilities due to tax rate and tax law changes, and a $34 unfavorable tax impact related to certain separation costs which are nondeductible for income tax purposes, somewhat offset by a $39 discrete income tax benefit for the release of valuation allowances in Canada and Russia, a $38 tax benefit related to currency impacts of a distribution of previously taxed income, and a $26 favorable tax impact associated with non-taxable settlement proceeds and earn-out liability adjustments in connection with the Firth Rixson acquisition.

Arconic’s effective tax rate was 185.2% in 2015 compared with the U.S. federal statutory rate of 35%. The effective tax rate differs from the U.S. federal statutory rate principally due to a $190 discrete income tax charge for valuation allowances on certain deferred tax assets in the U.S. and Iceland (see Income Taxes under Critical Accounting Policies and Estimates below), a $25 impairment of goodwill that is nondeductible for income tax purposes, a loss on the sale of a rolling mill in Russia for which no tax benefit was recognized, and a $34 net discrete income tax charge as described below.

In 2015, Alcoa World Alumina and Chemicals (AWAC), the former joint venture owned 60% by Arconic and 40% by Alumina Limited, recognized an $85 discrete income tax charge for a valuation allowance on certain deferred tax assets in Suriname (see Income Taxes under Critical Accounting Policies and Estimates below), which were related mostly to employee benefits and tax loss carryforwards. Arconic also had a $51 deferred tax liability related to its 60%-share of these deferred tax assets that was written off as a result of the valuation allowance recognized by AWAC.

Management anticipates that the effective tax rate in 2018 will be between 27% and 29%. However, business portfolio actions, changes in the current economic environment, tax legislation or rate changes, currency fluctuations, ability to realize deferred tax assets, movements in stock price impacting tax benefits or deficiencies on stock-based payment awards, and the results of operations in certain taxing jurisdictions may cause this estimated rate to fluctuate. It is also expected that continuing analysis of the 2017 Act, as well as additional guidance as it is issued, will have an impact on the estimated rate.

Loss from continuing operations after income taxes and noncontrolling interests—Lossfrom continuing operations after income taxes and noncontrolling interests was $74 for 2017, or $0.28 per diluted share, compared to $1,062 for 2016, or $2.58 per share. The increase in results of $988 was primarily attributable to charges for tax valuation allowances and costs related to the Separation Transaction in 2016; a gain of $238 ($351 pre-tax) on the sale of a portion of Arconic’s investment in Alcoa Corporation common stock and a gain of $167 ($167 pre-tax) on the Debt-for-Equity Exchange in 2017; income of $25 ($25 pre-tax) associated with a higher reversal of a contingent earn-out liability related to the Firth Rixson acquisition and income of $16 ($25 pre-tax) due to the reversal of a liability associated with a separation-related guarantee; net cost savings; and higher sales volumes across all segments; partially offset by a charge for goodwill impairment of $719 ($719 pre-tax); a charge related to the 2017 Act of $272; $47 ($73 pre-tax) of higher premiums paid for the early redemption of debt in 2017; higher LIFO inventory expense associated with higher aluminum prices; charges for asset impairments of the Fusina, Italy rolling mill of $60 ($60 pre-tax) and Latin America extrusions business of $41 ($41 pre-tax) based on the sale of these businesses; unfavorable product pricing, primarily in aerospace; and lower-margin product mix.

Loss from continuing operations after income taxes and noncontrolling interests was $1,062 for 2016, or $2.58 per diluted share, compared to $157 for 2015, or $0.54 per share. The decrease in results of $905 was primarily due to charges for tax valuation allowances and costs related to the Separation Transaction, primarily offset by a full-year effect of 2015 acquisitions (see Engineered Products and Solutions under Segment Information below) and net cost savings across all segments.

Segment Information

Arconic’s operations consist of three worldwide reportable segments: Engineered Products and Solutions, Global Rolled Products and Transportation and Construction Solutions (see below). In the first quarter of 2017, the Company changed its primary measure of segment performance from After-tax operating income (ATOI) to Adjusted earnings before interest, tax,

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depreciation, and amortization (“Adjusted EBITDA”). Segment performance under Arconic’s management reporting system is evaluated based on a number of factors; however, the primary measure of performance in 2017 was Adjusted EBITDA. Arconic’s definition of Adjusted EBITDA is net margin plus an add-back for depreciation and amortization. Net margin is equivalent to Sales minus the following items: Cost of goods sold; Selling, general administrative, and other expenses; Research and development expenses; and Provision for depreciation and amortization. Prior period information has been recast to conform to current year presentation. The Adjusted EBITDA presented may not be comparable to similarly titled measures of other companies. Certain items are excluded from segment Adjusted EBITDA such as: Impairment of goodwill; Restructuring and other charges; the impact of LIFO inventory accounting; metal price lag (the timing difference created when the average price of metal sold differs from the average cost of the metal when purchased by the respective segment - generally, when the price of metal increases, metal price lag is favorable, and when the price of metal decreases, metal price lag is unfavorable); corporate expense (general administrative and selling expenses of operating the corporate headquarters and other global administrative facilities and corporate research and development expenses); and other items, including intersegment profit eliminations.

Beginning in the first quarter of 2018, the Company's primary measure of segment performance will change from Adjusted EBITDA to Operating income, which more closely aligns segment performance with Operating income as presented in the Statement of Consolidated Operations. As part of this change, LIFO and metal price lag will be included in the Operating income of the segments.

Adjusted EBITDA for all reportable segments totaled $2,144 in 2017, $2,063 in 2016, and $1,894 in 2015. The following information provides sales and Adjusted EBITDA for each reportable segment, as well as certain shipment and realized price data for Global Rolled Products, for each of the three years in the period ended December 31, 2017. See Note N to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K for additional information.

Engineered Products and Solutions

	2017		2016		2015
Third-party sales	$	5,935	$	5,728	$	5,342
Adjusted EBITDA	$	1,224	$	1,195	$	1,111

The Engineered Products and Solutions segment produces products that are used primarily in the aerospace (commercial and defense), industrial, commercial transportation, and power generation end markets. Such products include fastening systems (titanium, steel, and nickel superalloys) and seamless rolled rings (mostly nickel superalloys); investment castings (nickel superalloys, titanium, and aluminum), including airfoils and forged jet engine components (e.g., jet engine disks), and extruded, machined and formed aircraft parts (titanium and aluminum), all of which are sold directly to customers and through distributors. More than 75% of the third-party sales in this segment are from the aerospace end market. A small part of this segment also produces various forged, extruded, and machined metal products (titanium, aluminum and steel) for the oil and gas, automotive, and land and sea defense end markets. Seasonal decreases in sales are generally experienced in the third quarter of the year due to the European summer slowdown across all end markets. Generally, the sales and costs and expenses of this segment are transacted in the local currency of the respective operations, which are mostly the U.S. dollar, British pound and the euro.

In April 2016, Arconic completed the sale of the Remmele Medical business that was part of the RTI acquisition (see below) and manufactured precision-machined metal products for customers in the minimally invasive surgical device and implantable device markets. Remmele Medical generated third-party sales of $23 from January 1, 2016 through the divestiture date, and, at the time of the divestiture, had approximately 330 employees.

In July 2015, Arconic completed the acquisition of RTI, a global supplier of titanium and specialty metal products and services for the commercial aerospace, defense, energy, and medical device end markets. The purpose of the acquisition was to expand Arconic’s range of titanium offerings and add advanced technologies and materials, primarily related to the aerospace end market. In 2014, RTI generated net sales of $794 and had approximately 2,600 employees. The operating results and assets and liabilities of RTI have been included within the Engineered Products and Solutions segment since the date of acquisition.

In March 2015, Arconic completed the acquisition of TITAL, a privately held aerospace castings company with approximately 650 employees (at the time of the acquisition) based in Germany. TITAL produces aluminum and titanium investment casting products for the aerospace and defense end markets. In 2014, TITAL generated sales of approximately $100. The purpose of the acquisition was to capture increasing demand for advanced jet engine components made of titanium, establish titanium-casting capabilities in Europe, and expand existing aluminum casting capacity. The operating results and assets and liabilities of TITAL have been included within the Engineered Products and Solutions segment since the date of acquisition.

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Third-party sales for the Engineered Products and Solutions segment increased $207, or 4%, in 2017 compared with 2016, primarily attributable to volume growth in both aerospace engines and airframes, partially offset by lower product pricing, primarily in the aerospace end market, and the absence of sales of $23 related to the Remmele Medical business, which was sold in April 2016.

Third-party sales for this segment increased $386, or 7%, in 2016 compared with 2015, primarily attributable to higher third-party sales of the two acquired businesses of $457, primarily related to the aerospace end market, and increased demand from the industrial gas turbine end market, partially offset by lower volumes in the oil and gas end market and commercial transportation end market as well as pricing pressures in aerospace.

Adjusted EBITDA for the Engineered Products and Solutions segment increased $29, or 2%, in 2017 compared with 2016, primarily on higher volumes and net cost savings, partially offset by product pricing pressures, ramp up costs associated with increasing production volumes of new aerospace engine parts, and a lower margin product mix.

Adjusted EBITDA for this segment increased $84, or 8%, in 2016 compared with 2015,primarily on net cost savings across all businesses as well as the volume increase from both the RTI acquisition and organic revenue growth, partially offset by a lower margin product mix and pricing pressures in the aerospace end market.

In 2018, demand in the commercial aerospace end market is expected to remain strong, driven by the ramp-up of new aerospace engine platforms. Demand in the defense end market is expected to grow due to the continuing ramp-up of certain aerospace programs. Additionally, net cost savings are anticipated while declines in the industrial gas turbine market and pricing pressure across all markets is likely to continue.

Global Rolled Products⁽¹⁾

	2017		2016		2015
Third-party sales	$	4,992	$	4,864	$	5,253
Intersegment sales	148		118		125
Total sales	$	5,140	$	4,982	$	5,378
Adjusted EBITDA	$	599	$	577	$	512
Third-party aluminum shipments (kmt)	1,197		1,339		1,375
Average realized price per metric ton of aluminum (2)	$	4,171	$	3,633	$	3,820

⁽¹⁾  Excludes the Warrick, IN rolling operations and the equity interest in the rolling mill at the joint venture in Saudi Arabia, both of which were previously part of the Global Rolled Products segment but became part of Alcoa Corporation effective November 1, 2016.

⁽²⁾  Generally, average realized price per metric ton of aluminum includes two elements: a) the price of metal (the underlying base metal component based on quoted prices from the LME, plus a regional premium which represents the incremental price over the base LME component that is associated with physical delivery of metal to a particular region), and b) the conversion price, which represents the incremental price over the metal price component that is associated with converting primary aluminum into sheet and plate. In this circumstance, the metal price component is a pass-through to this segment’s customers with limited exception (e.g., fixed-priced contracts, certain regional premiums).

The Global Rolled Products segment produces aluminum sheet and plate for a variety of end markets. Sheet and plate is sold directly to customers and through distributors related to the aerospace, automotive, commercial transportation, packaging, building and construction, and industrial products (mainly used in the production of machinery and equipment and consumer durables) end markets. A small portion of this segment also produces aseptic foil for the packaging end market. While the customer base for flat-rolled products is large, a significant amount of sales of sheet and plate is to a relatively small number of customers. Generally, the sales and costs and expenses of this segment are transacted in the local currency of the respective operations, which are mostly the U.S. dollar, Chinese yuan, the euro, the Russian ruble, the Brazilian real, and the British pound.

In March 2017, Arconic completed the sale of its Fusina, Italy rolling mill. While owned by Arconic, the operating results and assets and liabilities of the Fusina, Italy rolling mill were included in the Global Rolled Products segment. The rolling mill generated third-party sales of approximately $54 and $165 for 2017 and 2016, respectively. At the time of the divestiture, the rolling mill had approximately 312 employees. See Restructuring and Other Charges under Results of Operations above.

On November 1, 2016, Arconic entered into a Toll Processing Agreement with Alcoa Corporation for the tolling of metal for the Warrick, IN rolling mill which became a part of Alcoa Corporation upon the completion of the Separation Transaction. As

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part of this arrangement, Arconic provides a toll processing service to Alcoa Corporation to produce can sheet products at its facility in Tennessee through the expected end date of the contract, December 31, 2018. Alcoa Corporation supplies all required raw materials to Arconic and Arconic processes the raw materials into finished can sheet coils ready for shipment to the end customer. Tolling revenue for 2017 and the two months ended December 31, 2016 was $190 and $37, respectively.

In March 2015, Arconic completed the sale of a rolling mill located in Belaya Kalitva, Russia. While owned by Arconic, the operating results and assets and liabilities of the rolling mill were included in the Global Rolled Products segment. The rolling mill generated sales of approximately $20 and $130 in 2015 and 2014 and, at the time of divestiture, had approximately 1,870 employees. See Restructuring and Other Charges under Results of Operations above.

Third-party sales for the Global Rolled Products segment increased $128, or 3%, in 2017 compared with 2016, primarily attributable to volume growth in the automotive end market and higher aluminum pricing, partially offset by the impact of $362 associated with the ramp-down and Toll Processing Agreement with Alcoa Corporation at the Company’s North America packaging business in Tennessee, the absence of sales of $111 from the rolling mill in Fusina, Italy, aerospace customer inventory destocking and reduced build rates, and pricing pressures in the global packaging market.

Third-party sales for this segment decreased $389, or 7%, in 2016 compared with 2015, primarily due to the ramp-down of Tennessee packaging of $251; lower aluminum prices; and lower demand in the industrial products, packaging, commercial aerospace, commercial transportation, and North American heavy duty truck markets. These decreases were partially offset by higher volume in the automotive market.

Adjusted EBITDA for the Global Rolled Products segment increased $22, or 4%, in 2017 compared with 2016, primarily driven by net cost savings and increased automotive volumes, partially offset by lower aerospace volume from customer destocking and reduced build rates, continued pricing pressure on global packaging products and higher aluminum prices. The higher aluminum prices negatively impacted the Global Rolled Products Adjusted EBITDA margin by $18, or 140 basis points, in 2017 compared with 2016.

Adjusted EBITDA for this segment increased $65, or 13%, in 2016 compared with 2015,primarily driven by strong productivity improvements, which significantly exceeded cost increases, partially offset by lower pricing, primarily due to overall pricing pressure in the global can sheet market, unfavorable product mix and lower volumes as detailed above.

In 2018, demand in the automotive end market is expected to continue to grow due to the growing demand for innovative products and aluminum-intensive vehicles. Demand from the commercial airframe end market is expected to be flat in 2018 as the ramp-up of new programs is offset by lower build rates for aluminum intensive wide-body programs. The ramp-down of the North American packaging operations is expected to continue in 2018. Net productivity improvements are anticipated to continue.

Transportation and Construction Solutions

	2017		2016		2015
Third-party sales	$	1,985	$	1,802	$	1,882
Adjusted EBITDA	$	321	$	291	$	271

The Transportation and Construction Solutions segment produces products that are used mostly in the commercial transportation and nonresidential building and construction end markets. Such products include integrated aluminum structural systems, architectural extrusions, and forged aluminum commercial vehicle wheels, which are sold both directly to customers and through distributors. A small part of this segment also produces aluminum products for the industrial products end market. Generally, the sales and costs and expenses of this segment are transacted in the local currency of the respective operations, which are primarily the U.S. dollar, the euro, and the Brazilian real.

In December 2017, Arconic reached an agreement to sell its Latin America extrusions business that operates primarily in Brazil (see Restructuring and Other Charges under Results of Operations above). The sale is expected to close in the first half of 2018 following customary regulatory and anti-trust reviews. The operating results and assets and liabilities of the extrusions business are included in the Transportation and Construction Solutions segment.

Third-party sales for the Transportation and Construction Solutions segment increased $183, or 10%, in 2017 compared with 2016, primarily driven by increased volumes in the commercial transportation and building and construction end markets, higher aluminum pricing, and favorable foreign currency movements, partially offset by lower product pricing.

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Third-party sales for this segment decreased $80, or 4%, in 2016 compared with 2015, primarily driven by lower demand from the North American commercial transportation end market, which was partially offset by rising demand from the building and construction end market.

Adjusted EBITDA for the Transportation and Construction Solutions segment increased $30, or 10%, in 2017 compared with 2016, principally driven by net cost savings and higher volumes, partially offset by lower product pricing in the heavy-duty truck market, unfavorable product mix, and higher aluminum prices. The higher aluminum prices negatively impacted the Transportation and Construction Solutions Adjusted EBITDA margin by $19, or 120 basis points, in 2017 compared with 2016.

Adjusted EBITDA for this segment increased $20, or 7%, in 2016 compared with 2015, principally driven by net cost savings across all businesses and growth in the building and construction segment, partially offset by lower demand in the North American heavy duty truck and Brazilian markets.

In 2018, we expect continued growth in the North American and European commercial transportation and building and construction markets and continued demand for innovative products. Additionally, net cost savings are anticipated.

Reconciliation of Combined segment adjusted EBITDA to Net loss attributable to Arconic

Items required to reconcile Combined segment adjusted EBITDA to Net loss attributable to Arconic include: the Provision for depreciation and amortization; Impairment of goodwill; Restructuring and other charges; the impact of LIFO inventory accounting; metal price lag (the timing difference created when the average price of metal sold differs from the average cost of the metal when purchased by the respective segment — generally, when the price of metal increases, metal price lag is favorable, and when the price of metal decreases, metal price lag is unfavorable); corporate expense (general administrative and selling expenses of operating the corporate headquarters and other global administrative facilities and corporate research and development expenses); other items, including intersegment profit eliminations; Other income, net; Interest expense; Income tax expense; and the results of discontinued operations.

The following table reconciles Combined segment adjusted EBITDA to Net loss attributable to Arconic:

	2017			2016			2015
Combined segment adjusted EBITDA	$	2,144		$	2,063		$	1,894
Unallocated amounts:
Depreciation and amortization	(551		)	(535		)	(508		)
Impairment of goodwill	(719		)	—			(25		)
Restructuring and other charges	(165		)	(155		)	(214		)
Impact of LIFO	(110		)	(18		)	101
Metal price lag	72			27			(175		)
Corporate expense	(274		)	(454		)	(371		)
Other	(71		)	(109		)	(74		)
Operating income	$	326		$	819		$	628
Interest expense	(496		)	(499		)	(473		)
Other income, net	640			94			28
Income from continuing operations before income taxes	$	470		$	414		$	183
Provision for income taxes	(544		)	(1,476		)	(339		)
Discontinued operations	—			121			(165		)
Net income attributable to noncontrolling interest	—			—			(1		)
Net loss attributable to Arconic	$	(74	)	$	(941	)	$	(322	)

The significant changes in the reconciling items between Combined segment adjusted EBITDA and Net loss attributable to Arconic for 2017 compared with 2016 consisted of:

• an impairment of goodwill related to the annual impairment review of the Arconic Forgings and Extrusions business in 2017;

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• a change in the Impact of LIFO, mostly due to a greater increase in the price of aluminum, driven by higher base metal prices (LME) and regional premiums (increase in price at December 31, 2017 indexed to December 31, 2016 compared to the increase in price at December 31, 2016 indexed to December 31, 2015);

• a favorable change in Metal price lag due to higher prices for aluminum;

• a decrease in Corporate expense primarily attributable to costs incurred in 2016 related to the Separation Transaction, partially offset by proxy, advisory and governance-related costs and legal and other advisory costs related to Grenfell Tower incurred in 2017;

• an increase in Other income, net, largely the result of the $351 gain on the sale of a portion of Arconic’s investment in Alcoa Corporation common stock and a $167 gain on the Debt-for-Equity Exchange, income of $25 associated with a higher reversal of a contingent earn-out liability related to the Firth Rixson acquisition, and income of $25 due to the reversal of a liability associated with a separation-related guarantee;

• a decrease in Interest expense due to lower outstanding debt, mostly offset by premiums paid for the early redemption of $1,250 of the Company’s long-term debt; and

• a decrease in Provision for income taxes attributable to a charge for tax valuation allowances related to the Separation Transaction of $1,267 in 2016, partially offset by a charge of $272 resulting from the 2017 Act that principally relates to the revaluation of U.S. deferred tax assets and liabilities from 35% to 21%.

The significant changes in the reconciling items between Combined segment adjusted EBITDA and Net loss attributable to Arconic for 2016 compared with 2015 consisted of:

• an increase in Depreciation and amortization related to a full year of D&A related to two acquisitions which occurred during 2015 (see Engineered Products and Solutions under Segment Information above)

• a decrease in Restructuring and other charges, due to fewer portfolio actions;

• a change in the impact of LIFO, mostly due to higher aluminum prices, driven by higher base metal prices (LME) (increase in price at December 31, 2016 indexed to December 31, 2015 compared to a decrease in price at December 31, 2015 indexed to December 31, 2014);

• a favorable change in Metal price lag, the result of higher prices for aluminum;

• an increase in Corporate expense, largely attributable to an increase in costs related to the Separation Transaction of $193, partially offset by decreases in corporate research and development expenses and other various expenses;

• an increase in Other income, net, as a result of income of $76 associated with the reversal of a contingent earn-out liability and a post-closing adjustment, both of which related to the November 2014 acquisition of Firth Rixson;

• an increase in Interest expense, due to debt issuance costs expensed associated with the Separation Transaction, a full year of interest related to the RTI debt and costs associated with the early redemption of $750 of 5.55% Notes due February 2017, completed on December 30, 2016, which included a purchase premium; and

• an increase in Provision for income taxes attributable to a charge for tax valuation allowances related to the Separation Transaction of $1,267.

Reconciliation of Net loss attributable to Arconic to Consolidated adjusted EBITDA

Items required to reconcile Net loss attributable to Arconic to Consolidated adjusted EBITDA include: Depreciation and amortization; Impairment of goodwill; Restructuring and other charges; Other income, net; Interest expense; Income tax expense; and Discontinued operations.

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The following table reconciles Net loss attributable to Arconic to Consolidated adjusted EBITDA:

	2017			2016			2015
Net loss attributable to Arconic	$	(74	)	$	(941	)	$	(322	)
Depreciation and amortization	551			535			508
Impairment of goodwill	719			—			25
Restructuring and other charges	165			155			214
Other income, net	(640		)	(94		)	(28		)
Interest expense	496			499			473
Income taxes	544			1,476			339
Discontinued operations	—			(121		)	165
Consolidated Adjusted EBITDA (1)	$	1,761		$	1,509		$	1,374

⁽¹⁾ Consolidated adjusted EBITDA is a non-GAAP financial measure. Management believes that this measure is meaningful to investors because Consolidated adjusted EBITDA provides additional information with respect to Arconic’s operating performance. Additionally, presenting Consolidated adjusted EBITDA pursuant to our debt agreements is appropriate to provide additional information to investors to demonstrate Arconic’s ability to comply with its financial debt covenants. The Consolidated adjusted EBITDA presented may not be comparable to similarly titled measures of other companies.

Environmental Matters

See the Environmental Matters section of Note K to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K.

Liquidity and Capital Resources

Arconic maintains a disciplined approach to cash management and strengthening of its balance sheet. Management continued to focus on actions to improve Arconic’s cost structure and liquidity, providing the Company with the ability to operate effectively. Such actions included procurement efficiencies and overhead rationalization to reduce costs, working capital initiatives, and maintaining a sustainable level of capital expenditures.

Cash provided from operations and financing activities is expected to be adequate to cover Arconic’s operational and business needs over the next 12 months. For an analysis of long-term liquidity, see Contractual Obligations and Off-Balance Sheet Arrangements below.

At December 31, 2017, cash and cash equivalents of Arconic were $2,150, of which $402 was held by Arconic's non-U.S. subsidiaries. The cash held by non-U.S. subsidiaries is generally used for operational activities of Arconic’s international businesses.  As such, management does not have a current expectation of repatriating cash held in foreign jurisdictions.  

The Statement of Consolidated Cash Flows has not been restated for discontinued operations, therefore the discussion below concerning Cash from Operations, Financing Activities, and Investing Activities for the years ended December 31, 2016 and 2015 includes the results of both Arconic and Alcoa Corporation up through the completion of the Separation Transaction on November 1, 2016.

Cash from Operations

Cash provided from operations in 2017 was $701 compared with $870 in 2016. The decrease of $169, or 19%, was primarily due to lower operating results (net loss plus net add-back for noncash transactions in earnings) of $345 and higher pension contributions of $20, partially offset by a favorable change in noncurrent assets of $111 due to the prepayment of $200 made in April 2016 related to a gas supply agreement for the Australia alumina refineries (Alcoa Corporation), a favorable change in noncurrent liabilities of $55, and lower cash used for working capital of $30. The components of the change in working capital included favorable changes of $114 in receivables; $87 in prepaid expenses and other current assets; and $278 in accrued expenses; mostly offset by unfavorable changes in working capital, including $163 in inventories; $170 in accounts payable, trade; and $116 in taxes, including income taxes.

Cash provided from operations in 2016 was $870 compared with $1,582 in 2015. The decrease of $712, or 45%, was primarily due to lower operating results (net loss plus net add-back for noncash transactions in earnings) of $985 and unfavorable changes in working capital of $104 and noncurrent liabilities of $21, partially offset by a favorable change associated with noncurrent assets of $218 and a decrease in pension contributions of $180. The components of the unfavorable change in working capital included $450 in receivables and $122 in prepaid expenses and other current assets; partially offset by

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favorable changes in working capital including $322 in accounts payable, trade, principally the result of the impact of purchasing metal from Alcoa Corporation and the timing of payments; $68 in taxes, including income taxes; $43 in accrued expenses; and $35 in inventories.

Financing Activities

Cash used for financing activities was $963 in 2017 compared with $754 in 2016 and $441 in 2015.

The use of cash of $963 in 2017 was principally the result of $1,634 in repayments on borrowings under certain revolving credit facilities (see below) and repayments on debt, primarily related to the early redemption of the Company’s 6.50% Bonds due 2018, 6.75% Notes due 2018, and a portion of the 5.72% Notes due 2019 (see Note I to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K for additional information); and $162 in dividends to shareholders. These items were partially offset by $816 in additions to debt, primarily from borrowings under certain revolving credit facilities, and $50 of proceeds from the exercise of stock options.

The use of cash of $754 in 2016 was principally the result of $2,734 in payments on debt, mostly related to the repayment of borrowings under certain revolving credit facilitates (see below) and the repayment in December 2016 of $750 of outstanding principal of 5.55% Notes due February 2017; $228 in dividends to shareholders; and $175 in net cash paid to noncontrolling interests. These items were mostly offset by $1,962 in additions to debt, virtually all of which was the result of borrowing under certain revolving credit facilities, and $421 in net cash transferred from Alcoa Corporation at the completion of the Separation Transaction.

The use of cash in 2015 of $441 was principally the result of $2,030 in payments on debt, mostly related to the repayment of borrowings under certain revolving credit facilities (see below) and the repayment of convertible notes assumed in conjunction with the acquisition of RTI (see below); $223 in dividends paid to shareholders; and $104 in net cash paid to noncontrolling interests. These items were mostly offset by $1,901 in additions to debt, virtually all of which was the result of borrowings under certain revolving credit facilities (see below).

In July 2015, through the acquisition of RTI (see Engineered Products and Solutions under Segment Information above), Arconic assumed the obligation to repay two tranches of convertible debt; one tranche was due and settled in cash on December 1, 2015 (principal amount of $115) and the other tranche is due on October 15, 2019 (principal amount of $403), unless earlier converted or purchased by Arconic at the holder’s option under specific conditions. Upon conversion of the 2019 convertible notes, holders will receive, at Arconic’s election, cash, shares of common stock (approximately 14,294,000 shares using the December 31, 2017 conversion rate of 35.5119 shares per $1,000 (not in millions) bond or per-share conversion price of $28.1596), or a combination of cash and shares. On the maturity date, each holder of outstanding notes will be entitled to receive $1,000 (not in millions) in cash for each $1,000 (not in millions) bond, together with accrued and unpaid interest.

On July 25, 2014, Arconic entered into a Five-Year Revolving Credit Agreement (the “Credit Agreement”) with a syndicate of lenders and issuers named therein which provides for a senior unsecured revolving credit facility (the “Credit Facility”). The proceeds are to be used to provide working capital or for other general corporate purposes of Arconic. By an Extension Request and Amendment Letter dated as of June 5, 2015, the maturity date of the Credit Facility was extended to July 25, 2020. In September 2016, Arconic entered into an amendment to the Credit Agreement to permit the Separation Transaction and to amend certain terms of the Credit Facility including the replacement of the existing financial covenant with a leverage ratio and reduction of total commitments available from $4,000 to $3,000. The amendment became effective on the separation date of November 1, 2016. The previous financial covenant, based upon Consolidated Net Worth (as defined in the Credit Agreement) was replaced. Arconic is required to maintain a ratio of Indebtedness (as defined in the Credit Agreement), to Consolidated EBITDA (as defined in the Credit Agreement) of 4.50 to 1.00 for the period of the four fiscal quarters most recently ended, declining to 3.50 to 1.00 on December 31, 2019 and thereafter.

The Credit Agreement includes additional covenants, including, among others, (a) limitations on Arconic’s ability to incur liens securing indebtedness for borrowed money, (b) limitations on Arconic’s ability to consummate a merger, consolidation or sale of all or substantially all of its assets, and (c) limitations on Arconic’s ability to change the nature of its business. As of December 31, 2017, Arconic was in compliance with all such covenants.

The Credit Agreement matures on July 25, 2020, unless extended or earlier terminated in accordance with the provisions of the Credit Agreement. Arconic may make one additional one-year extension request during the remaining term of the Credit Agreement, subject to the lender consent requirements set forth in the Credit Agreement. Under the provisions of the Credit Agreement, Arconic will pay a fee of 0.30% (based on Arconic’s long-term debt ratings as of December 31, 2017) of the total commitment per annum to maintain the Credit Facility.

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The Credit Facility is unsecured and amounts payable under it will rank pari passu with all other unsecured, unsubordinated indebtedness of Arconic. Borrowings under the Credit Facility may be denominated in U.S. dollars or euros. Loans will bear interest at a base rate or a rate equal to LIBOR, plus, in each case, an applicable margin based on the credit ratings of Arconic’s outstanding senior unsecured long-term debt. The applicable margin on base rate loans and LIBOR loans will be 0.70% and 1.70% per annum, respectively, based on Arconic’s long-term debt ratings as of December 31, 2017. Loans may be prepaid without premium or penalty, subject to customary breakage costs.

The obligation of Arconic to pay amounts outstanding under the Credit Facility may be accelerated upon the occurrence of an “Event of Default” as defined in the Credit Agreement. Such Events of Default include, among others, (a) Arconic’s failure to pay the principal of, or interest on, borrowings under the Credit Facility, (b) any representation or warranty of Arconic in the Credit Agreement proving to be materially false or misleading, (c) Arconic’s breach of any of its covenants contained in the Credit Agreement, and (d) the bankruptcy or insolvency of Arconic.

There were no amounts outstanding at December 31, 2017 and 2016 and no amounts were borrowed during 2017, 2016 or 2015 under the Credit Facility. In addition to the Credit Facility, Arconic has a number of other credit facilities that provide a combined borrowing capacity of $715 as of December 31, 2017, of which $640 is due to expire in 2018 and $75 is due to expire in 2019. The purpose of any borrowings under these credit arrangements is to provide for working capital requirements and for other general corporate purposes. The covenants contained in all these arrangements are the same as the Credit Agreement (see above).

In 2017, 2016 and 2015, Arconic borrowed and repaid $810, $1,950, and $1,890, respectively, under the respective credit arrangements. The weighted-average interest rate and weighted-average days outstanding of the respective borrowings during 2017, 2016, and 2015 were 2.6%, 1.9%, and 1.6%, respectively, and 46 days, 49 days, and 69 days, respectively.

In September 2014, Arconic completed two public securities offerings under its shelf registration statement for (i) $1,250 of 25 million depositary shares, each representing a 1/10th interest in a share of Arconic’s 5.375% Class B Mandatory Convertible Preferred Stock, Series 1, par value $1 per share, liquidation preference $500 per share, and (ii) $1,250 of 5.125% Notes due 2024. The net proceeds of the offerings were used to finance the cash portion of the acquisition of Firth Rixson. On October 2, 2017, all outstanding 24,975,978 depositary shares were converted at a rate of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this noncash equity transaction.

Arconic’s cost of borrowing and ability to access the capital markets are affected not only by market conditions but also by the short- and long-term debt ratings assigned to Arconic’s debt by the major credit rating agencies.

On May 1, 2017, Standard and Poor’s Ratings Services affirmed Arconic’s long-term debt at BBB-, an investment grade rating, with a stable outlook, and its short-term debt at A-3. On November 1, 2016, Moody’s Investor Service (Moody’s) downgraded Arconic’s long-term debt rating from Ba1, a non-investment grade, to Ba2 and its short-term debt rating from Speculative Grade Liquidity-1 to Speculative Grade Liquidity-2. Additionally, Moody’s changed the outlook from negative to stable (ratings and outlook were affirmed on November 2, 2017). On April 21, 2016, Fitch affirmed Arconic’s long-term debt rating at BB+, a non-investment grade, and short-term debt at B. Additionally, Fitch changed the current outlook from positive to evolving. On July 7, 2016, Fitch changed the current outlook from evolving to stable (ratings and outlook were affirmed on July 3, 2017).

Investing Activities

Cash provided from investing activities was $540 in 2017 compared with cash used for investing activities of $165 in 2016 and $1,060 in 2015.

The source of cash in 2017 included proceeds of $888 from the sale of a portion of Arconic’s investment in Alcoa Corporation common stock and the receipt of proceeds from the sale of the Yadkin Hydroelectric Project of $243, somewhat offset by cash used for capital expenditures of $596, including the aerospace expansion (very thick plate stretcher and horizontal heat treat furnace) at the Davenport, IA plant and a titanium aluminide furnace at the Niles, Ohio facility, and the injection of $10 into the Fusina rolling business prior to its sale.

The use of cash in 2016 was mainly due to $1,125 in capital expenditures ($298 Alcoa Corporation), 29% of which related to growth projects, including the aerospace expansion (very thick plate stretcher) at the Davenport, IA plant and a titanium aluminide furnace at the Niles, Ohio facility. This use of cash was primarily offset by $692 in proceeds from the sale of assets and businesses, including $457 from the redemption of company-owned life insurance policies, $120 in proceeds related to the sale of the Intalco smelter wharf property (Alcoa Corporation), and $102 in proceeds ($99 net of transaction costs) from the sale of the Remmele Medical business, which was part of Arconic’s acquisition of RTI in July 2015; and $280 in sales of

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investments, composed primarily of $145 for an equity interest in a natural gas pipeline in Australia (Alcoa Corporation) and $130 for securities held by Arconic’s captive insurance company.

The use of cash in 2015 was mainly due to $1,180 in capital expenditures ($391 Alcoa Corporation) (includes costs related to environmental control in new and expanded facilities of $141), 38% of which related to growth projects, including the aerospace expansion at the La Porte, IN plant, the automotive expansion at the Alcoa, TN plant, the aerospace expansion (very thick plate stretcher) at the Davenport, IA plant, the aerospace expansion (isothermal press) at the Savannah, GA plant (Firth Rixson), and the specialty foil expansion at the Itapissuma plant in Brazil; $205 (net of cash acquired) for the acquisition of TITAL (see Engineered Products and Solutions under Segment Information above); and $134 in additions to investments, including the purchase of $70 in securities held by Arconic’s captive insurance company and equity contributions of $29 related to the aluminum complex joint venture in Saudi Arabia (Alcoa Corporation). These items were somewhat offset by $302 in cash acquired from RTI (see Engineered Products and Solutions under Segment Information above); $112 in proceeds from the sale of assets and businesses, composed of three land sales in Australia and the United States combined and post-closing adjustments related to an ownership stake in a smelter (Alcoa Corporation), four rolling mills, and an ownership stake in a bauxite mine/alumina refinery (Alcoa Corporation) divested from December 2014 through March 2015; and $40 in sales of investments, related to the sale of $21 in securities held by Arconic’s captive insurance company and $19 in proceeds from the sale of the remaining portion of an equity investment in a China rolling mill.

Noncash Financing and Investing Activities.

On October 2, 2017, all outstanding 24,975,978 depositary shares (each depositary share representing a 1/10th interest in a share of the mandatory convertible preferred stock) were converted at a rate of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this equity transaction. (See Note O to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K for additional information.)

In the second quarter of 2017, the Company completed a Debt-for-Equity Exchange with the Investment Banks of a portion of Arconic’s retained interest in Alcoa Corporation common stock for a portion of the Company’s outstanding notes held by the Investment Banks for $465 including accrued and unpaid interest.

On October 5, 2016, Arconic completed a 1-for-3 reverse stock split of its outstanding and authorized shares of common stock, pursuant to the authorization provided at a special meeting of Arconic common shareholders (the “Reverse Stock Split”). The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares. The par value of the common stock remained at $1.00 per share. Accordingly, Common stock and Additional capital in the Company’s Consolidated Balance Sheet at December 31, 2016 reflect a decrease and increase of $877, respectively.

In August 2016, Arconic retired its outstanding treasury stock consisting of approximately 76 million shares. As a result, Common stock and Additional capital were decreased by $76 and $2,563, respectively, to reflect the retirement of the treasury shares.

In July 2015, Arconic purchased all outstanding shares of RTI common stock in a stock-for-stock transaction valued at $870. As a result, Arconic issued 29 million shares (87 million shares—pre-Reverse Stock Split) of its common stock to consummate this transaction.

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Contractual Obligations and Off-Balance Sheet Arrangements

Contractual Obligations. Arconic is required to make future payments under various contracts, including long-term purchase obligations, financing arrangements, and lease agreements. Arconic also has commitments to fund its pension plans, provide payments for other postretirement benefit plans, and fund capital projects. As of December 31, 2017, a summary of Arconic’s outstanding contractual obligations is as follows (these contractual obligations are grouped in the same manner as they are classified in the Statement of Consolidated Cash Flows in order to provide a better understanding of the nature of the obligations and to provide a basis for comparison to historical information):

	Total		2018		2019-2020		2021-2022		Thereafter
Operating activities:
Energy-related purchase obligations	$	71	$	40	$	26	$	5	$	—
Raw material purchase obligations	1,013		801		210		2		—
Other purchase obligations	51		20		14		12		5
Operating leases	442		108		150		84		100
Interest related to total debt	2,675		371		693		429		1,182
Estimated minimum required pension funding	1,600		350		675		575		—
Other postretirement benefit payments	785		90		180		180		335
Layoff and other restructuring payments	58		58		—		—		—
Deferred revenue arrangements	30		12		18		—		—
Uncertain tax positions	75		—		—		—		75
Financing activities:
Total debt	6,844		29		1,883		1,870		3,062
Dividends to shareholders	—		—		—		—		—
Investing activities:
Capital projects	426		340		86		—		—
Totals	$	14,070	$	2,219	$	3,935	$	3,157	$	4,759

Obligations for Operating Activities

Energy-related purchase obligations consist primarily of electricity and natural gas contracts with expiration dates ranging from one year to six years. Raw material purchase obligations consist mostly of aluminum, titanium sponge, and various other metals with expiration dates ranging from less than one year to four years. Many of these purchase obligations contain variable pricing components, and, as a result, actual cash payments may differ from the estimates provided in the preceding table. Operating leases represent multi-year obligations for certain land and buildings, plant equipment, vehicles, and computer equipment.

Interest related to total debt is based on interest rates in effect as of December 31, 2017 and is calculated on debt with maturities that extend to 2042.

Estimated minimum required pension funding and postretirement benefit payments are based on actuarial estimates using current assumptions for discount rates, long-term rate of return on plan assets, rate of compensation increases, and health care cost trend rates, among others. It is Arconic’s policy to fund amounts for pension plans sufficient to meet the minimum requirements set forth in applicable country benefits laws and tax laws. Arconic has determined that it is not practicable to present pension funding and other postretirement benefit payments beyond 2022 and 2027, respectively.

Layoff and other restructuring payments to be paid within one year primarily relate to severance costs and special layoff benefit payments.

Deferred revenue arrangements require Arconic to deliver product to a customer over the specified contract period through 2020 for a sheet and plate contract. While these obligations are not expected to result in cash payments, they represent contractual obligations for which the Company would be obligated if the specified product deliveries could not be made.

Uncertain tax positions taken or expected to be taken on an income tax return may result in additional payments to tax authorities. The amount in the preceding table includes interest and penalties accrued related to such positions as of December 31, 2017. The total amount of uncertain tax positions is included in the “Thereafter” column as the Company is not

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able to reasonably estimate the timing of potential future payments. If a tax authority agrees with the tax position taken or expected to be taken or the applicable statute of limitations expires, then additional payments will not be necessary.

Obligations for Financing Activities

Arconic has historically paid quarterly dividends on its preferred and common stock. Including dividends on preferred stock, Arconic paid $162 in dividends to shareholders during 2017. This amount includes dividends related to a class of preferred stock issued in September 2014, which converted to common stock on October 2, 2017 (see Financing Activities under Liquidity and Capital Resources above). Because all dividends are subject to approval by Arconic’s Board of Directors, amounts are not included in the preceding table unless such authorization has occurred. As of December 31, 2017, there were 481,416,537 shares of outstanding common stock and 546,024 shares of outstanding Class A preferred stock. The annual preferred stock dividend is at a rate of $3.75 per share and the annual common stock dividend expected to be paid is $0.24 per share for 2018.

Obligations for Investing Activities

Capital projects in the preceding table only include amounts approved by management as of December 31, 2017. Funding levels may vary in future years based on anticipated construction schedules of the projects. It is expected that significant expansion projects will be funded through various sources, including cash provided from operations. Total capital expenditures are anticipated to be approximately $700 in 2018.

Off-Balance Sheet Arrangements.

At December 31, 2017, Arconic has outstanding bank guarantees related to tax matters, outstanding debt, workers’ compensation, environmental obligations, energy contracts, and customs duties, among others. The total amount committed under these guarantees, which expire at various dates between 2018 and 2026 was $29 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to provide certain guarantees for Alcoa Corporation, which had a combined fair value of $8 and $35 at December 31, 2017 and 2016, respectively, and were included in Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet. Arconic was required to provide payment guarantees for Alcoa Corporation issued on behalf of a third party, and amounts outstanding under these payment guarantees were $197 and $354 at December 31, 2017 and 2016, respectively. These guarantees expire at various times between 2018 and 2024, and relate to project financing for Alcoa Corporation’s aluminum complex in Saudi Arabia. Furthermore, Arconic was required to provide guarantees related to two long-term supply agreements for energy for Alcoa Corporation facilities in the event of an Alcoa Corporation payment default. In October 2017, Alcoa Corporation announced that it had terminated one of the two agreements, the electricity contract with Luminant Generation Company LLC that was tied to its Rockdale Operations, effective as of October 1, 2017. As a result of the termination of the Rockdale electricity contract, Arconic recorded income of $25 in the fourth quarter of 2017 associated with reversing the fair value of the electricity contract guarantee. For the remaining long-term supply agreement, Arconic is required to provide a guarantee up to an estimated present value amount of approximately $1,297.

Arconic was also required to provide guarantees of $50 related to two Alcoa Corporation energy supply contracts. These guarantees expired in March 2017. Additionally, Arconic was required to provide guarantees of $53 related to certain Alcoa Corporation environmental liabilities. Notification of a change in guarantor to Alcoa Corporation was made to the appropriate environmental agencies and as such, Arconic no longer provides these guarantees.

In December 2016, Arconic entered into a one-year claims purchase agreement with a bank covering claims up to $245 related to the Saudi Arabian joint venture and two long-term energy supply agreements. The majority of the premium was paid by Alcoa Corporation.  The agreement matured in December 2017 and was not renewed in 2018 due to the decline in exposure to guarantee claims including a substantial reduction in the guarantees related to the Saudi Arabian joint venture and also the elimination of the guarantee related to the Rockdale energy contract. The decision to enter into a claims purchase agreement will be made on an annual basis going forward.

Arconic has outstanding letters of credit primarily related to workers’ compensation, energy contracts and leasing obligations. The total amount committed under these letters of credit, which automatically renew or expire at various dates, mostly in 2018, was $120 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to retain letters of credit of $62 that had previously been provided related to both Arconic and Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016. Alcoa Corporation workers’ compensation claims and letter of credit fees paid by Arconic are being

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proportionally billed to and are being fully reimbursed by Alcoa Corporation. Additionally, Arconic was required to provide letters of credit for certain Alcoa Corporation equipment leases and energy contracts and, as a result, Arconic had $103 of outstanding letters of credit relating to these liabilities. The entire $103 of outstanding letters of credit were canceled in 2017 when Alcoa Corporation issued its own letters of credit to cover these obligations.

Arconic also has outstanding surety bonds primarily related to tax matters, contract performance, workers’ compensation, environmental-related matters, and customs duties. The total amount committed under these bonds, which automatically renew or expire at various dates, mostly in 2018, was $54 at December 31, 2017.

As part of the Separation Transaction, Arconic was required to provide surety bonds related to Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016 and, as a result, Arconic has $25 in outstanding surety bonds relating to these liabilities. Alcoa Corporation workers’ compensation claims and surety bond fees paid by Arconic are being proportionally billed to and are being fully reimbursed by Alcoa Corporation.

Critical Accounting Policies and Estimates

The preparation of the Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America requires management to make certain judgments, estimates, and assumptions regarding uncertainties that affect the amounts reported in the Consolidated Financial Statements and disclosed in the accompanying Notes. Areas that require significant judgments, estimates, and assumptions include accounting for environmental and litigation matters; the testing of goodwill, other intangible assets, and properties, plants, and equipment for impairment; estimating fair value of businesses acquired or divested; pension plans and other postretirement benefits obligations; stock-based compensation; and income taxes.

Management uses historical experience and all available information to make these judgments, estimates, and assumptions, and actual results may differ from those used to prepare the Company’s Consolidated Financial Statements at any given time. Despite these inherent limitations, management believes that Management’s Discussion and Analysis of Financial Condition and Results of Operations and the Consolidated Financial Statements and accompanying Notes provide a meaningful and fair perspective of the Company.

A summary of the Company’s significant accounting policies is included in Note A to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K. Management believes that the application of these policies on a consistent basis enables the Company to provide the users of the Consolidated Financial Statements with useful and reliable information about the Company’s operating results and financial condition.

Environmental Matters. Expenditures for current operations are expensed or capitalized, as appropriate. Expenditures relating to existing conditions caused by past operations, which will not contribute to future revenues, are expensed. Liabilities are recorded when remediation costs are probable and can be reasonably estimated. The liability may include costs such as site investigations, consultant fees, feasibility studies, outside contractors, and monitoring expenses. Estimates are generally not discounted or reduced by potential claims for recovery. Claims for recovery are recognized when probable and as agreements are reached with third parties. The estimates also include costs related to other potentially responsible parties to the extent that Arconic has reason to believe such parties will not fully pay their proportionate share. The liability is continuously reviewed and adjusted to reflect current remediation progress, prospective estimates of required activity, and other factors that may be relevant, including changes in technology or regulations.

Litigation Matters. For asserted claims and assessments, liabilities are recorded when an unfavorable outcome of a matter is deemed to be probable and the loss is reasonably estimable. Management determines the likelihood of an unfavorable outcome based on many factors such as the nature of the matter, available defenses and case strategy, progress of the matter, views and opinions of legal counsel and other advisors, applicability and success of appeals processes, and the outcome of similar historical matters, among others. Once an unfavorable outcome is deemed probable, management weighs the probability of estimated losses, and the most reasonable loss estimate is recorded. If an unfavorable outcome of a matter is deemed to be reasonably possible, then the matter is disclosed and no liability is recorded. With respect to unasserted claims or assessments, management must first determine that the probability that an assertion will be made is likely, then, a determination as to the likelihood of an unfavorable outcome and the ability to reasonably estimate the potential loss is made. Legal matters are reviewed on a continuous basis to determine if there has been a change in management’s judgment regarding the likelihood of an unfavorable outcome or the estimate of a potential loss.

Goodwill. Goodwill is not amortized; instead, it is reviewed for impairment annually (in the fourth quarter) or more frequently if indicators of impairment exist or if a decision is made to sell or realign a business. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity

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operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.

Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. Arconic has eight reporting units, of which four are included in the Engineered Products and Solutions segment, three are included in the Transportation and Construction Solutions segment, and the remaining reporting unit is the Global Rolled Products segment. More than 85% of Arconic’s total goodwill at December 31, 2017 is allocated to two reporting units as follows: Arconic Fastening Systems and Rings (AFSR) ($2,221) and Arconic Power and Propulsion (APP) ($1,686) businesses, both of which are included in the Engineered Products and Solutions segment. These amounts include an allocation of Corporate’s goodwill.

In January 2018, management announced a change in the organizational structure of the Engineered Products and Solutions segment, from four business units to three business units, with a focus on aligning its internal structure to core markets and customers and reducing cost. As a result of this change, goodwill will be reallocated to the three new reporting units and evaluated for impairment during the first quarter of 2018. The Company does not expect any goodwill impairment as a result of this realignment.

In reviewing goodwill for impairment, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test.

Arconic determines annually, based on facts and circumstances, which of its reporting units will be subject to the qualitative assessment. For those reporting units where a qualitative assessment is either not performed or for which the conclusion is that an impairment is more likely than not, a quantitative impairment test will be performed. Arconic’s policy is that a quantitative impairment test be performed for each reporting unit at least once during every three-year period.

Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Additionally, an assessment of the level of impact that a particular factor would have on the estimated fair value is determined using high, medium, and low weighting. Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital (WACC) between the current and prior years for each reporting unit.

During the 2017 annual review of goodwill, management performed the qualitative assessment for one reporting unit, Arconic Wheel and Transportation Products (within the Transportation and Construction Solutions segment). Management concluded that it was not more likely than not that the estimated fair value of the reporting unit was less than its carrying value. As such, no further analysis was required.

Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. Arconic uses a discounted cash flow (DCF) model to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, production costs, tax rates, capital spending, discount rate, and working capital changes. Most of these assumptions vary significantly among the reporting units. Cash flow forecasts are generally based on approved business unit operating plans for the early years and historical relationships in later years. The WACC rate for the individual reporting units is estimated with the assistance of valuation experts. Arconic would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit.

During the 2017 annual review of goodwill, management proceeded directly to the quantitative impairment test for six reporting units as follows: AFSR, APP, Arconic Titanium and Engineered Products (ATEP), and Arconic Forgings and Extrusions (AFE), which are all included in the Engineered Products and Solutions segment, Global Rolled Products, and Building and Construction Systems, which is included in the Transportation and Construction Solutions segment. The estimated fair value for five of the six reporting units exceeded its respective carrying value, resulting in no impairment. However, the

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estimated fair value of AFE was lower than its carrying value. As such, in the fourth quarter of 2017, Arconic recorded an impairment for the full amount of goodwill in the AFE reporting unit of $719. The decrease in the AFE fair value was primarily due to unfavorable performance that is impacting operating margins and a higher discount rate due to an increase in the risk-free rate of return, while the carrying value increased compared to prior year.

Goodwill impairment tests in 2016 and 2015 indicated that goodwill was not impaired for any of the Company’s reporting units, except for the soft alloy extrusion business in Brazil which is included in the Transportation and Construction Solutions segment. In the fourth quarter of 2015, for the soft alloy extrusion business in Brazil, the estimated fair value as determined by the DCF model was lower than the associated carrying value of its reporting unit’s goodwill. As a result, management determined that the implied fair value of the reporting unit’s goodwill was zero. Arconic recorded a goodwill impairment of $25 in 2015. The impairment of goodwill resulted from headwinds from the downturn in the Brazilian economy and the continued erosion of gross margin despite the execution of cost reduction strategies. As a result of the goodwill impairment, there is no goodwill remaining for the reporting unit.

Properties, Plants, and Equipment and Other Intangible Assets. Properties, plants, and equipment and Other intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets (asset group) may not be recoverable. Recoverability of assets is determined by comparing the estimated undiscounted net cash flows of the operations related to the assets (asset group) to their carrying amount. An impairment loss would be recognized when the carrying amount of the assets (asset group) exceeds the estimated undiscounted net cash flows. The amount of the impairment loss to be recorded is calculated as the excess of the carrying value of the assets (asset group) over their fair value, with fair value determined using the best information available, which generally is a DCF model. The determination of what constitutes an asset group, the associated estimated undiscounted net cash flows, and the estimated useful lives of assets also require significant judgments.

Discontinued Operations and Assets Held For Sale. The fair values of all businesses to be divested are estimated using accepted valuation techniques such as a DCF model, valuations performed by third parties, earnings multiples, or indicative bids, when available. A number of significant estimates and assumptions are involved in the application of these techniques, including the forecasting of markets and market share, sales volumes and prices, costs and expenses, and multiple other factors. Management considers historical experience and all available information at the time the estimates are made; however, the fair value that is ultimately realized upon the divestiture of a business may differ from the estimated fair value reflected in the Consolidated Financial Statements.

Pension and Other Postretirement Benefits. Liabilities and expenses for pension and other postretirement benefits are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated liability, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, health care cost trend rates, retirement age, and mortality).

The interest rate used to discount future estimated liabilities is determined using a Company-specific yield curve model (above-median) developed with the assistance of an external actuary. The cash flows of the plans’ projected benefit obligations are discounted using a single equivalent rate derived from yields on high quality corporate bonds, which represent a broad diversification of issuers in various sectors, including finance and banking, industrials, transportation, and utilities, among others. The yield curve model parallels the plans’ projected cash flows, which have an average duration of 11 years. The underlying cash flows of the bonds included in the model exceed the cash flows needed to satisfy the Company’s plans’ obligations multiple times. In 2017, 2016, and 2015, the discount rate used to determine benefit obligations for U.S. pension and other postretirement benefit plans was 3.75%, 4.20%, and 4.29%, respectively. The impact on the liabilities of a change in the discount rate of 1/4 of 1% would be approximately $225 and either a charge or credit of approximately $3 to after-tax earnings in the following year.

In conjunction with the annual measurement of the funded status of Arconic’s pension and other postretirement benefit plans at December 31, 2015, management elected to change the manner in which the interest cost component of net periodic benefit cost will be determined in 2016 and beyond. Previously, the interest cost component was determined by multiplying the single equivalent rate described above and the aggregate discounted cash flows of the plans’ projected benefit obligations. Under the new methodology, the interest cost component will be determined by aggregating the product of the discounted cash flows of the plans’ projected benefit obligations for each year and an individual spot rate (referred to as the “spot rate” approach). This change resulted in a lower interest cost component of net periodic benefit cost under the new methodology compared to the previous methodology in 2017 and 2016 of $34 and $84, respectively, for pension plans and $6 and $14, respectively, for other postretirement benefit plans. Management believes this new methodology, which represents a change in an accounting estimate, is a better measure of the interest cost as each year’s cash flows are specifically linked to the interest rates of bond payments in the same respective year.

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The expected long-term rate of return on plan assets is generally applied to a five-year market-related value of plan assets (a fair value at the plan measurement date is used for certain non-U.S. plans). The process used by management to develop this assumption is one that relies on a combination of historical asset return information and forward-looking returns by asset class. As it relates to historical asset return information, management focuses on various historical moving averages when developing this assumption. While consideration is given to recent performance and historical returns, the assumption represents a long-term, prospective return. Management also incorporates expected future returns on current and planned asset allocations using information from various external investment managers and consultants, as well as management’s own judgment.

For 2017, 2016, and 2015, management used 7.75% as its expected long-term rate of return, which was based on the prevailing and planned strategic asset allocations, as well as estimates of future returns by asset class. These rates fell within the respective range of the 20-year moving average of actual performance and the expected future return developed by asset class. In 2015, the decrease of 25 basis points in the expected long-term rate of return was due to a decrease in the 20-year moving average of actual performance. For 2018, management anticipates that 7.00% will be the expected long-term rate of return. The decrease of 75 basis points in the expected long-term rate is due to a decrease in the expected return by asset class and the 20-year moving average.

A change in the assumption for the expected long-term rate of return on plan assets of 1/4 of 1% would impact after-tax earnings by approximately $9 for 2018.

In 2017, a net loss of $220 (after-tax) was recorded in other comprehensive loss, primarily due to the decrease in the discount rate of 45 basis points and asset performance less than expected, which was partially offset by the amortization of actuarial losses. In 2016, a net benefit of $1,601 (after-tax and noncontrolling interest) was recorded in other comprehensive loss, primarily due to the transfer of $2,080 to Alcoa Corporation which was partially offset by a net charge of $479. The charge was due to the unfavorable performance of the plan assets and a 9 basis point decrease in the discount rate, which was partially offset by the amortization of actuarial losses. In 2015, a net charge of $10 (after-tax and noncontrolling interest) was recorded in other comprehensive loss, primarily due to the unfavorable performance of the plan assets, which was mostly offset by the amortization of actuarial losses and a 29 basis point increase in the discount rate.

In January 2018, the Company announced the freeze of its U.S. defined benefit pension plans for salaried and non-bargained hourly employees, effective April 1, 2018. Benefit accruals for future service and compensation under all of the Company’s qualified and non-qualified defined benefit pension plans for U.S. salaried and non-bargained hourly employees (the “Pension Plans”) will cease. In connection with this change, effective April 1, 2018, impacted employees will commence receiving an employer contribution of 3% of eligible compensation under the Arconic Salaried Retirement Savings Plan, and, for the period from April 1, 2018 through December 31, 2018, an additional transition employer contribution of 3% of eligible compensation.

As a result of this change to the Pension Plans, in the first quarter of 2018, the Company expects to record a liability decrease of approximately $140 related to the reduction of future benefits and a curtailment charge of approximately $5 pre-tax.  For the full year 2018, the Company expects pension-related expense to be lower by approximately $50 pre-tax compared to 2017 full year expenses.  The lower pension expense expectation is based on preliminary year-end December 31, 2017 results and is inclusive of the change to the Pension Plans described above as well as expected changes in other pension-related assumptions.

Additionally, in accordance with accounting guidance effective January 1, 2018 that requires the other components of net periodic benefit cost to be presented separately from the service cost component, approximately $110 of pension-related expense in 2018 is expected to be recorded in the Other income, net line item in the Statement of Consolidated Operations.

Stock-based Compensation. Arconic recognizes compensation expense for employee equity grants using the non-substantive vesting period approach, in which the expense is recognized ratably over the requisite service period based on the grant date fair value. Forfeitures are accounted for as they occur. The fair value of new stock options is estimated on the date of grant using a lattice-pricing model. The fair value of performance awards containing a market condition is valued using a Monte Carlo valuation model. Determining the fair value at the grant date requires judgment, including estimates for the average risk-free interest rate, dividend yield, volatility, and exercise behavior. These assumptions may differ significantly between grant dates because of changes in the actual results of these inputs that occur over time.

As part of Arconic’s stock-based compensation plan design, individuals who are retirement-eligible have a six-month requisite service period in the year of grant. As a result, a larger portion of expense will be recognized in the first half of each year for these retirement-eligible employees. Compensation expense recorded in 2017, 2016, and 2015 was $54 ($36 after-tax), $76 ($51 after-tax), and $77 ($51 after-tax), respectively. Of these amounts, $15, $19, and $15 in 2017, 2016, and 2015, respectively, pertains to the acceleration of expense related to retirement-eligible employees.

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Most plan participants can choose whether to receive their award in the form of stock options, stock awards, or a combination of both. This choice is made before the grant is issued and is irrevocable.

Income Taxes. The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of Arconic’s assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted.

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

In 2017, Arconic released $98 of certain U.S. state valuation allowances. After weighing all available positive and negative evidence, management determined that the underlying net deferred tax assets were more likely than not realizable based on projected taxable income estimates taking into account expected post-separation apportionment data. Valuation allowances of $750 remain against other net state deferred tax assets expected to expire before utilization. The need for valuation allowances against net state deferred tax assets will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

Arconic also recorded an additional valuation allowance of $675 which offsets additional losses reported on the Spanish tax return filed in 2017 related to the Separation Transaction that are not more likely than not to be realized.  There is no net impact to the provision for income taxes, as the additional valuation allowance fully offsets the current year tax benefit in Spain. 

Arconic’s foreign tax credits in the United States have a 10-year carryforward period with expirations ranging from 2018 to 2027 (as of December 31, 2017). Valuation allowances were initially established in prior years on a portion of the foreign tax credit carryforwards, primarily due to insufficient foreign source income to allow for full utilization of the credits within the expiration period. After consideration of all available evidence including potential tax planning strategies and earnings of foreign subsidiaries projected to be distributable as taxable foreign dividends, incremental valuation allowances of $302 and $134 were recognized in 2016 and 2015, respectively. Foreign tax credits of $57, $128, and $15 expired at the end of 2017, 2016, and 2015, respectively, resulting in a corresponding decrease to the valuation allowance. During 2017, an additional valuation allowance of $23 was recorded for current year excess foreign tax credits, offset by a net $14 reduction for other adjustments. At December 31, 2017, the cumulative amount of the valuation allowance was $379. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances, including the impact of the 2017 Act.

Arconic will continue its analysis of the 2017 Act, including any additional guidance that may be issued. Further analysis could result in changes to assumptions related to the realizability of certain deferred tax assets including, but not limited to, foreign tax credits, alternative minimum tax credits, and state tax loss carryforwards. Provisional estimates of the impact of the 2017 Act on the realizability of certain deferred tax assets have been made based on information and computations that were available, prepared, and analyzed as of February 2, 2018. In accordance with Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act, issued by the Securities and Exchange Commission, Arconic will reassess the need for valuation allowances on these deferred tax assets as necessary during 2018.

In 2016, Arconic recognized a $1,267 discrete income tax charge for valuation allowances related to the Separation Transaction, including $925 with respect to Alcoa Corporation’s net deferred tax assets in the United States, $302 with respect to Arconic’s foreign tax credits in the United States, $42 with respect to certain deferred tax assets in Luxembourg, and $(2) related to the net impact of other smaller items. After weighing all positive and negative evidence, as described above,

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management determined that the net deferred tax assets of Alcoa Corporation were not more likely than not to be realized due to lack of historical and projected domestic source taxable income. As such, a valuation allowance was recorded immediately prior to separation.

In addition, Arconic recognized a $42 discrete income tax charge in 2016 for a valuation allowance on the full value of certain net deferred tax assets in Luxembourg. Sources of taxable income which previously supported the net deferred tax asset are no longer available as a result of the Separation Transaction. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

In 2016, Arconic also recognized discrete income tax benefits related to the release of valuation allowances on certain net deferred tax assets in Russia and Canada of $19 and $20, respectively. After weighing all available evidence, management determined that it was more likely than not that the net income tax benefits associated with the underlying deferred tax assets would be realizable based on historical cumulative income and projected taxable income.

Arconic also recorded additional valuation allowances in Australia of $93 related to the Separation Transaction, in Spain of $163 related to a tax law change and in Luxembourg of $280 related to the Separation Transaction as well as a tax law change. These valuation allowances fully offset current year changes in deferred tax asset balances of each respective jurisdiction, resulting in no net impact to tax expense. The need for a valuation allowance will be reassessed on a continuous basis in future periods by each jurisdiction and, as a result, the allowances may increase or decrease based on changes in facts and circumstances.

In 2015, Arconic recognized an additional $141 discrete income tax charge for valuation allowances on certain deferred tax assets in Iceland and Suriname. Of this amount, an $85 valuation allowance was established on the full value of the deferred tax assets in Suriname, which were related mostly to employee benefits and tax loss carryforwards. These deferred tax assets have an expiration period ranging from 2016 to 2022 (as of December 31, 2015). The remaining $56 charge relates to a valuation allowance established on a portion of the deferred tax assets recorded in Iceland. These deferred tax assets have an expiration period ranging from 2017 to 2023. After weighing all available positive and negative evidence, as described above, management determined that it was no longer more likely than not that Arconic will realize the tax benefit of either of these deferred tax assets. This was mainly driven by a decline in the outlook of the Primary Metals business, combined with prior year cumulative losses and a short expiration period.

Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than not threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitations has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.

Related Party Transactions

Arconic buys products from and provides services to Alcoa Corporation following the separation at negotiated prices between the parties. These transactions were not material to the financial position or results of operations of Arconic for all periods presented. Effective May 2017, upon disposition of the remaining common stock that Arconic held in Alcoa Corporation, they are no longer deemed a related party.

Recently Adopted Accounting Guidance

See the Recently Adopted Accounting Guidance section of Note A to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K.

Recently Issued Accounting Guidance

See the Recently Issued Accounting Guidance section of Note A to the Consolidated Financial Statements in Part II Item 8 of this Form 10-K.

56

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk.

Not material.

Item 8. Financial Statements and Supplementary Data.

Management’s Reports to Arconic Shareholders

Management’s Report on Financial Statements and Practices

The accompanying Consolidated Financial Statements of Arconic Inc. and its subsidiaries (the “Company”) were prepared by management, which is responsible for their integrity and objectivity. The statements were prepared in accordance with accounting principles generally accepted in the United States of America and include amounts that are based on management’s best judgments and estimates. The other financial information included in the annual report is consistent with that in the financial statements.

Management also recognizes its responsibility for conducting the Company’s affairs according to the highest standards of personal and corporate conduct. This responsibility is characterized and reflected in key policy statements issued from time to time regarding, among other things, conduct of its business activities within the laws of the host countries in which the Company operates and potentially conflicting outside business interests of its employees. The Company maintains a systematic program to assess compliance with these policies.

Management’s Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company. In order to evaluate the effectiveness of internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act, management has conducted an assessment, including testing, using the criteria in Internal Control—Integrated Framework (2013), issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s system of internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. The Company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with accounting principles generally accepted in the United States of America, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Based on the assessment, management has concluded that the Company maintained effective internal control over financial reporting as of December 31, 2017, based on criteria in Internal Control—Integrated Framework (2013) issued by the COSO.

The effectiveness of the Company’s internal control over financial reporting as of December 31, 2017 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report, which is included herein.

/s/ Charles P. Blankenship

Charles P. Blankenship

Chief Executive Officer

/s/ Ken Giacobbe

Ken Giacobbe

Executive Vice President and

Chief Financial Officer

57

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors of Arconic Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Arconic Inc. and its subsidiariesas of December 31, 2017and December 31, 2016,and the related consolidated statements of operations, comprehensive (loss) income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2017, including the related notes (collectively referred to as the “consolidated financial statements”).We also have audited the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework(2013)issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidatedfinancial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2017and December 31, 2016, and the results of theiroperations and theircash flows for each of the three years in the period ended December 31, 2017in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - Integrated Framework(2013)issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanyingManagement’s Report on Internal Control over Financial Reporting. Our responsibility is to express opinions on the Company’s consolidatedfinancial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidatedfinancial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidatedfinancial statements included performing procedures to assess the risks of material misstatement of the consolidatedfinancial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidatedfinancial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidatedfinancial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

58

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

Pittsburgh, Pennsylvania

February 23, 2018

We have served as the Company’s auditor since 1950.

59

Arconic and subsidiaries

Statement of Consolidated Operations

(in millions, except per-share amounts)

For the year ended December 31,	2017			2016			2015
Sales (N)	$	12,960		$	12,394		$	12,413
Cost of goods sold (exclusive of expenses below)	10,357			9,811			10,104
Selling, general administrative, and other expenses (C)	731			942			765
Research and development expenses	111			132			169
Provision for depreciation and amortization	551			535			508
Impairment of goodwill (A and E)	719			—			25
Restructuring and other charges (D)	165			155			214
Operating income	326			819			628
Interest expense (S)	496			499			473
Other income, net (L)	(640		)	(94		)	(28		)
Income from continuing operations before income taxes	470			414			183
Provision for income taxes (Q)	544			1,476			339
Loss from continuing operations after income taxes	(74		)	(1,062		)	(156		)
Income (loss) from discontinued operations after income taxes (C)	—			184			(41		)
Net loss	(74		)	(878		)	(197		)
Less: Net income from continuing operations attributable to noncontrolling interests	—			—			1
Less: Net income from discontinued operations attributable to noncontrolling interests (C)	—			63			124
Net loss Attributable to Arconic	$	(74	)	$	(941	)	$	(322	)
Amounts Attributable to Arconic Common Shareholders (P):
Net loss	$	(127	)	$	(1,010	)	$	(391	)
(Loss) earnings per share—basic:
Continuing operations	$	(0.28	)	$	(2.58	)	$	(0.54	)
Discontinued operations	—			0.27			(0.39		)
Net loss per share-basic	$	(0.28	)	$	(2.31	)	$	(0.93	)
(Loss) earnings per share—diluted
Continuing operations	$	(0.28	)	$	(2.58	)	$	(0.54	)
Discontinued operations	—			0.27			(0.39		)
Net loss per share-diluted	$	(0.28	)	$	(2.31	)	$	(0.93	)

The accompanying notes are an integral part of the consolidated financial statements.

60

Arconic and subsidiaries

Statement of Consolidated Comprehensive (Loss) Income

(in millions)

	Arconic									Noncontrolling Interests								Total
For the year ended December 31,	2017			2016			2015			2017		2016			2015			2017			2016			2015
Net (loss) income	$	(74	)	$	(941	)	$	(322	)	$	—	$	63		$	125		$	(74	)	$	(878	)	$	(197	)
Other comprehensive (loss) income, net of tax (B):
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	(220		)	(479		)	(10		)	—		(3		)	8			(220		)	(482		)	(2		)
Foreign currency translation adjustments	252			268			(1,566		)	2		182			(429		)	254			450			(1,995		)
Net change in unrealized gains on available-for-sale securities	(134		)	137			(5		)	—		—			—			(134		)	137			(5		)
Net change in unrecognized gains (losses) on cash flow hedges	26			(617		)	827			—		5			(1		)	26			(612		)	826
Total Other comprehensive (loss) income, net of tax	(76		)	(691		)	(754		)	2		184			(422		)	(74		)	(507		)	(1,176		)
Comprehensive (loss) income	$	(150	)	$	(1,632	)	$	(1,076	)	$	2	$	247		$	(297	)	$	(148	)	$	(1,385	)	$	(1,373	)

The accompanying notes are an integral part of the consolidated financial statements.

61

Arconic and subsidiaries

Consolidated Balance Sheet

(in millions)

December 31,	2017			2016
Assets
Current assets:
Cash and cash equivalents (U)	$	2,150		$	1,863
Receivables from customers, less allowances of $8 in 2017 and $13 in 2016 (R)	1,035			974
Other receivables (C and R)	339			477
Inventories (G)	2,480			2,253
Prepaid expenses and other current assets	374			325
Total current assets	6,378			5,892
Properties, plants, and equipment, net (H)	5,594			5,499
Goodwill (A and E)	4,535			5,148
Deferred income taxes (Q)	743			1,234
Investment in common stock of Alcoa Corporation (C and U)	—			1,020
Intangibles, net (E)	987			988
Other noncurrent assets	481			257
Total Assets	$	18,718		$	20,038
Liabilities
Current liabilities:
Accounts payable, trade	$	1,839		$	1,744
Accrued compensation and retirement costs	399			398
Taxes, including income taxes	75			85
Accrued interest payable	124			153
Other current liabilities	349			329
Short-term debt (I and U)	38			40
Total current liabilities	2,824			2,749
Long-term debt, less amount due within one year (I and U)	6,806			8,044
Accrued pension benefits (T)	2,564			2,345
Accrued other postretirement benefits (T)	841			889
Other noncurrent liabilities and deferred credits (J)	759			870
Total liabilities	13,794			14,897
Contingencies and commitments (K)
Equity
Arconic shareholders’ equity:
Preferred stock (O)	55			55
Mandatory convertible preferred stock (O)	—			3
Common stock (O)	481			438
Additional capital	8,266			8,214
Accumulated deficit	(1,248		)	(1,027		)
Accumulated other comprehensive loss (B)	(2,644		)	(2,568		)
Total Arconic shareholders’ equity	4,910			5,115
Noncontrolling interests	14			26
Total equity	4,924			5,141
Total Liabilities and Equity	$	18,718		$	20,038

The accompanying notes are an integral part of the consolidated financial statements.

62

Arconic and subsidiaries

Statement of Consolidated Cash Flows

(in millions)

For the year ended December 31,	2017			2016			2015
Cash from Operations
Net loss	$	(74	)	$	(878	)	$	(197	)
Adjustments to reconcile net loss to cash from operations:
Depreciation, depletion and amortization	551			1,132			1,280
Deferred income taxes	434			1,125			34
Equity income, net of dividends	—			42			158
Impairment of goodwill (A and E)	719			—			25
Restructuring and other charges	165			257			1,195
Net gain from investing activities—asset sales	(513		)	(156		)	(74		)
Net periodic pension benefit cost	217			304			485
Stock-based compensation	67			86			92
Excess tax benefits from stock-based payment arrangements	—			—			(9		)
Other	61			60			(32		)
Changes in assets and liabilities, excluding effects of acquisitions, divestitures, and foreign currency translation adjustments:
(Increase) decrease in receivables	(124		)	(238		)	212
(Increase) in inventories	(192		)	(29		)	(64		)
Decrease (increase) in prepaid expenses and other current assets	11			(76		)	46
Increase (decrease) in accounts payable, trade	62			232			(90		)
(Decrease) in accrued expenses	(116		)	(394		)	(437		)
(Decrease) increase in taxes, including income taxes	(23		)	93			25
Pension contributions	(310		)	(290		)	(470		)
(Increase) in noncurrent assets	(41		)	(152		)	(370		)
(Decrease) in noncurrent liabilities	(193		)	(248		)	(227		)
Cash provided from operations	701			870			1,582
Financing Activities
Net change in short-term borrowings (original maturities of three months or less)	(2		)	(3		)	(16		)
Additions to debt (original maturities greater than three months)	816			1,962			1,901
Payments on debt (original maturities greater than three months)	(1,634		)	(2,734		)	(2,030		)
Proceeds from exercise of employee stock options	50			4			25
Excess tax benefits from stock-based payment arrangements	—			—			9
Dividends paid to shareholders	(162		)	(228		)	(223		)
Distributions to noncontrolling interests	(14		)	(226		)	(106		)
Contributions from noncontrolling interests	—			51			2
Net cash transferred from Alcoa Corporation at separation	—			421			—
Other	(17		)	(1		)	(3		)
Cash used for financing activities	(963		)	(754		)	(441		)
Investing Activities
Capital expenditures	(596		)	(1,125		)	(1,180		)
Acquisitions, net of cash acquired (F and M)	—			10			97
Proceeds from the sale of assets and businesses (M)	(9		)	692			112
Additions to investments	(2		)	(52		)	(134		)
Sales of investments (C and M)	890			280			40
Net change in restricted cash	12			14			(20		)
Other (C)	245			16			25
Cash provided from (used for) investing activities	540			(165		)	(1,060		)
Effect of exchange rate changes on cash and cash equivalents	9			(7		)	(39		)
Net change in cash and cash equivalents	287			(56		)	42
Cash and cash equivalents at beginning of year	1,863			1,919			1,877
Cash and cash equivalents at end of year	$	2,150		$	1,863		$	1,919

The accompanying notes are an integral part of the consolidated financial statements.

63

Arconic and subsidiaries

Statement of Changes in Consolidated Equity

(in millions, except per-share amounts)

	Arconic Shareholders
	Preferred stock		Mandatory convertible preferred stock			Common stock			Additional capital			Retained earnings (deficit)			Treasury stock			Accumulated Other Comprehensive Loss			Noncontrolling interests			Total equity
Balance at December 31, 2014	$	55	$	3		$	1,304		$	9,284		$	9,379		$	(3,042	)	$	(4,677	)	$	2,488		$	14,794
Net (loss) income	—		—			—			—			(322		)	—			—			125			(197		)
Other comprehensive loss (B)	—		—			—			—			—			—			(754		)	(422		)	(1,176		)
Cash dividends declared:
Preferred–Class A @ $3.75 per share	—		—			—			—			(2		)	—			—			—			(2		)
Preferred–Class B @ $26.8750 per share	—		—			—			—			(67		)	—			—			—			(67		)
Common @ $0.12 per share	—		—			—			—			(154		)	—			—			—			(154		)
Equity option on convertible notes (F)	—		—			—			55			—			—			—			—			55
Stock-based compensation (O)	—		—			—			92			—			—			—			—			92
Common stock issued: compensation plans (O)	—		—			—			(195		)	—			217			—			—			22
Issuance of common stock (F and O)	—		—			87			783			—			—			—			—			870
Distributions	—		—			—			—			—			—			—			(106		)	(106		)
Contributions	—		—			—			—			—			—			—			2			2
Other	—		—			—			—			—			—			—			(2		)	(2		)
Balance at December 31, 2015	$	55	$	3		$	1,391		$	10,019		$	8,834		$	(2,825	)	$	(5,431	)	$	2,085		$	14,131
Net (loss) income	—		—			—			—			(941		)	—			—			63			(878		)
Other comprehensive (loss) income (B)	—		—			—			—			—			—			(691		)	184			(507		)
Cash dividends declared:
Preferred–Class A @ $3.75 per share	—		—			—			—			(2		)	—			—			—			(2		)
Preferred–Class B @ $26.8750 per share	—		—			—			—			(67		)	—			—			—			(67		)
Common @ $0.36 per share	—		—			—			—			(159		)	—			—			—			(159		)
Stock-based compensation (O)	—		—			—			86			—			—			—			—			86
Common stock issued: compensation plans (O)	—		—			—			(205		)	—			186			—			—			(19		)
Retirement of Treasury stock (O)	—		—			(76		)	(2,563		)	—			2,639			—			—			—
Reverse stock split (O)	—		—			(877		)	877			—			—			—			—			—
Distribution of Alcoa Corporation	—		—			—			—			(8,692		)	—			3,554			(2,133		)	(7,271		)
Distributions	—		—			—			—			—			—			—			(226		)	(226		)
Contributions	—		—			—			—			—			—			—			51			51
Other	—		—			—			—			—			—			—			2			2
Balance at December 31, 2016	$	55	$	3		$	438		$	8,214		$	(1,027	)	$	—		$	(2,568	)	$	26		$	5,141
Net loss	—		—			—			—			(74		)	—			—			—			(74		)
Other comprehensive loss (B)	—		—			—			—			—			—			(76		)	2			(74		)
Cash dividends declared:
Preferred–Class A @ $3.75 per share	—		—			—			—			(2		)	—			—			—			(2		)
Preferred–Class B @ $20.1563 per share	—		—			—			—			(51		)	—			—			—			(51		)
Common @ $0.24 per share	—		—			—			—			(109		)	—			—			—			(109		)
Stock-based compensation (O)	—		—			—			67			—			—			—			—			67
Common stock issued: compensation plans (O)	—		—			—			21			—			—			—			—			21
Conversion of mandatory convertible preferred stock (O)	—		(3		)	39			(36		)	—			—			—			—			—
Issuance of common stock (F and O)	—		—			4			—			—			—			—			—			4
Distributions	—		—			—			—			—			—			—			(14		)	(14		)
Other	—		—			—			—			15			—			—			—			15
Balance at December 31, 2017	$	55	$	—		$	481		$	8,266		$	(1,248	)	$	—		$	(2,644	)	$	14		$	4,924

The accompanying notes are an integral part of the consolidated financial statements.

64

Arconic and subsidiaries

Notes to the Consolidated Financial Statements

(dollars in millions, except per-share amounts)

A. Summary of Significant Accounting Policies

Basis of Presentation. The Consolidated Financial Statements of Arconic Inc. and subsidiaries (“Arconic” or the “Company”) are prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) and require management to make certain judgments, estimates, and assumptions. These may affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. They also may affect the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates upon subsequent resolution of identified matters. Certain prior year amounts have been reclassified to conform to the current year presentation.

The separation of Alcoa Inc. into two standalone, publicly-traded companies, Arconic Inc. (the new name for Alcoa Inc.) and Alcoa Corporation, became effective on November 1, 2016 (the “Separation Transaction”). The financial results of Alcoa Corporation for all periods prior to the Separation Transaction have been retrospectively reflected in the Statement of Consolidated Operations as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented prior to the Separation Transaction. The cash flows and comprehensive income related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows and Statement of Consolidated Comprehensive (Loss) Income, respectively, for all periods presented. See Note C for additional information related to the Separation Transaction and discontinued operations.

Principles of Consolidation. The Consolidated Financial Statements include the accounts of Arconic and companies in which Arconic has a controlling interest. Intercompany transactions have been eliminated. Investments in affiliates in which Arconic cannot exercise significant influence are accounted for on the cost method.

Management also evaluates whether an Arconic entity or interest is a variable interest entity and whether Arconic is the primary beneficiary. Consolidation is required if both of these criteria are met. Arconic does not have any variable interest entities requiring consolidation.

Related Party Transactions. Arconic buys products from and provides services to Alcoa Corporation following the separation at negotiated prices between the parties. These transactions were not material to the financial position or results of operations of Arconic for all periods presented. Effective May 2017, upon disposition of the remaining common stock that Arconic held in Alcoa Corporation, they are no longer deemed a related party.

Cash Equivalents. Cash equivalents are highly liquid investments purchased with an original maturity of three months or less.

Inventory Valuation. Inventories are carried at the lower of cost and net realizable value, with cost for approximately half of U.S. inventories determined under the last-in, first-out (LIFO) method. The cost of other inventories is determined under a combination of the first-in, first-out (FIFO) and average-cost methods.

Properties, Plants, and Equipment. Properties, plants, and equipment are recorded at cost. Depreciation is recorded principally on the straight-line method at rates based on the estimated useful lives of the assets. The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):

Segment	Structures	Machinery and equipment
Engineered Products and Solutions	29	17
Global Rolled Products	31	21
Transportation and Construction Solutions	27	18

Gains or losses from the sale of assets are generally recorded in Other income, net (see policy below for assets classified as held for sale and discontinued operations). Repairs and maintenance are charged to expense as incurred. Interest related to the construction of qualifying assets is capitalized as part of the construction costs.

Properties, plants, and equipment are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets (asset group) may not be recoverable. Recoverability of assets is determined by comparing the estimated undiscounted net cash flows of the operations related to the assets (asset group) to their carrying amount. An impairment loss would be recognized when the carrying amount of the assets (asset group) exceeds the estimated undiscounted net cash flows. The amount of the impairment loss to be recorded is calculated as the excess of the carrying value of the assets

65

(asset group) over their fair value, with fair value determined using the best information available, which generally is a discounted cash flow (DCF) model. The determination of what constitutes an asset group, the associated estimated undiscounted net cash flows, and the estimated useful lives of assets also require significant judgments. See Note F for information regarding asset impairments.

Goodwill. Goodwill is not amortized; instead, it is reviewed for impairment annually (in the fourth quarter) or more frequently if indicators of impairment exist or if a decision is made to sell or realign a business. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.

Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. Arconic has eight reporting units, of which four are included in the Engineered Products and Solutions segment, three are included in the Transportation and Construction Solutions segment, and the remaining reporting unit is the Global Rolled Products segment. More than 85% of Arconic’s total goodwill at December 31, 2017 is allocated to two reporting units as follows: Arconic Fastening Systems and Rings (AFSR) ($2,221) and Arconic Power and Propulsion (APP) ($1,686) businesses, both of which are included in the Engineered Products and Solutions segment. These amounts include an allocation of Corporate’s goodwill.

In reviewing goodwill for impairment, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test.

Arconic determines annually, based on facts and circumstances, which of its reporting units will be subject to the qualitative assessment. For those reporting units where a qualitative assessment is either not performed or for which the conclusion is that an impairment is more likely than not, a quantitative impairment test will be performed. Arconic’s policy is that a quantitative impairment test be performed for each reporting unit at least once during every three-year period.

Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Additionally, an assessment of the level of impact that a particular factor would have on the estimated fair value is determined using high, medium, and low weighting. Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital (WACC) between the current and prior years for each reporting unit.

During the 2017 annual review of goodwill, management performed the qualitative assessment for one reporting unit, Arconic Wheel and Transportation Products (within the Transportation and Construction Solutions segment). Management concluded that it was not more likely than not that the estimated fair value of the reporting unit was less than its carrying value. As such, no further analysis was required.

Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. Arconic uses a discounted cash flow model (DCF) to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, production costs, tax rates, capital spending, discount rate, and working capital changes. Most of these assumptions vary significantly among the reporting units. Cash flow forecasts are generally based on approved business unit operating plans for the early years and historical relationships in later years. The WACC rate for the individual reporting units is estimated with the assistance of valuation experts. Arconic would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit.

During the 2017 annual review of goodwill, management proceeded directly to the quantitative impairment test for six reporting units as follows: AFSR, APP, Arconic Titanium and Engineered Products (ATEP), and Arconic Forgings and

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Extrusions (AFE), which are all included in the Engineered Products and Solutions segment, Global Rolled Products, and Building and Construction Systems, which is included in the Transportation and Construction Solutions segment. The estimated fair value for five of the six reporting units exceeded its respective carrying value, resulting in no impairment. However, the estimated fair value of AFE was lower than its carrying value. As such, in the fourth quarter of 2017, Arconic recorded an impairment for the full amount of goodwill in the AFE reporting unit of $719. The decrease in the AFE fair value was primarily due to unfavorable performance that is impacting operating margins and a higher discount rate due to an increase in the risk-free rate of return, while the carrying value increased compared to prior year.

Goodwill impairment tests in 2016 and 2015 indicated that goodwill was not impaired for any of the Company’s reporting units, except for the soft alloy extrusion business in Brazil which is included in the Transportation and Construction Solutions segment. In the fourth quarter of 2015, for the soft alloy extrusion business in Brazil, the estimated fair value as determined by the DCF model was lower than the associated carrying value of its reporting unit’s goodwill. As a result, management determined that the implied fair value of the reporting unit’s goodwill was zero. Arconic recorded a goodwill impairment of $25 in 2015. The impairment of goodwill resulted from headwinds from the downturn in the Brazilian economy and the continued erosion of gross margin despite the execution of cost reduction strategies. As a result of the goodwill impairment, there is no goodwill remaining for the reporting unit.

Other Intangible Assets. Intangible assets with indefinite useful lives are not amortized while intangible assets with finite useful lives are amortized generally on a straight-line basis over the periods benefited. The following table details the weighted-average useful lives of software and other intangible assets by reporting segment (numbers in years):

Segment	Software	Other intangible assets
Engineered Products and Solutions	6	34
Global Rolled Products	6	9
Transportation and Construction Solutions	5	16

Revenue Recognition. Arconic recognizes revenues when title, ownership, and risk of loss pass to the customer, all of which occurs upon shipment or delivery of the product and is based on the applicable shipping terms. The shipping terms vary across all businesses and depend on the product, the country of origin, and the type of transportation (truck, train, or vessel).

In certain circumstances, Arconic receives advanced payments from its customers for product to be delivered in future periods. These advanced payments are recorded as deferred revenue until the product is delivered and title and risk of loss have passed to the customer in accordance with the terms of the contract. Deferred revenue is included in Other current liabilities and Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet.

Environmental Matters. Expenditures for current operations are expensed or capitalized, as appropriate. Expenditures relating to existing conditions caused by past operations, which will not contribute to future revenues, are expensed. Liabilities are recorded when remediation costs are probable and can be reasonably estimated. The liability may include costs such as site investigations, consultant fees, feasibility studies, outside contractors, and monitoring expenses. Estimates are generally not discounted or reduced by potential claims for recovery. Claims for recovery are recognized when probable and as agreements are reached with third parties. The estimates also include costs related to other potentially responsible parties to the extent that Arconic has reason to believe such parties will not fully pay their proportionate share. The liability is continuously reviewed and adjusted to reflect current remediation progress, prospective estimates of required activity, and other factors that may be relevant, including changes in technology or regulations.

Litigation Matters. For asserted claims and assessments, liabilities are recorded when an unfavorable outcome of a matter is deemed to be probable and the loss is reasonably estimable. Management determines the likelihood of an unfavorable outcome based on many factors such as the nature of the matter, available defenses and case strategy, progress of the matter, views and opinions of legal counsel and other advisors, applicability and success of appeals processes, and the outcome of similar historical matters, among others. Once an unfavorable outcome is deemed probable, management weighs the probability of estimated losses, and the most reasonable loss estimate is recorded. If an unfavorable outcome of a matter is deemed to be reasonably possible, then the matter is disclosed and no liability is recorded. With respect to unasserted claims or assessments, management must first determine that the probability that an assertion will be made is likely, then, a determination as to the likelihood of an unfavorable outcome and the ability to reasonably estimate the potential loss is made. Legal matters are reviewed on a continuous basis to determine if there has been a change in management’s judgment regarding the likelihood of an unfavorable outcome or the estimate of a potential loss.

Income Taxes. The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable)

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for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of Arconic’s assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted.

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than not threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitations has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.

Stock-based Compensation. Arconic recognizes compensation expense for employee equity grants using the non-substantive vesting period approach, in which the expense is recognized ratably over the requisite service period based on the grant date fair value. Forfeitures are accounted for as they occur. The fair value of new stock options is estimated on the date of grant using a lattice-pricing model. The fair value of performance awards containing a market condition is valued using a Monte Carlo valuation model. Determining the fair value at the grant date requires judgment, including estimates for the average risk-free interest rate, dividend yield, volatility, and exercise behavior. These assumptions may differ significantly between grant dates because of changes in the actual results of these inputs that occur over time.

Most plan participants can choose whether to receive their award in the form of stock options, stock awards, or a combination of both. This choice is made before the grant is issued and is irrevocable.

Foreign Currency. The local currency is the functional currency for Arconic’s significant operations outside the United States, except for certain operations in Canada and Russia, where the U.S. dollar is used as the functional currency. The determination of the functional currency for Arconic’s operations is made based on the appropriate economic and management indicators.

Acquisitions. Arconic’s business acquisitions are accounted for using the acquisition method. The purchase price is allocated to the assets acquired and liabilities assumed based on their estimated fair values. Any excess purchase price over the fair value of the net assets acquired is recorded as goodwill. For all acquisitions, operating results are included in the Statement of Consolidated Operations from the date of the acquisition.

Discontinued Operations and Assets Held For Sale. For those businesses where management has committed to a plan to divest, each business is valued at the lower of its carrying amount or estimated fair value less cost to sell. If the carrying amount of the business exceeds its estimated fair value, an impairment loss is recognized. Fair value is estimated using accepted valuation techniques such as a DCF model, valuations performed by third parties, earnings multiples, or indicative bids, when available. A number of significant estimates and assumptions are involved in the application of these techniques, including the forecasting of markets and market share, sales volumes and prices, costs and expenses, and multiple other factors. Management considers historical experience and all available information at the time the estimates are made; however, the fair value that is ultimately realized upon the divestiture of a business may differ from the estimated fair value reflected in the Consolidated Financial Statements. Depreciation and amortization expense is not recorded on assets of a business to be divested once they are classified as held for sale. Businesses to be divested are generally classified in the Consolidated Financial Statements as either discontinued operations or held for sale.

For businesses classified as discontinued operations, the balance sheet amounts and results of operations are reclassified from their historical presentation to assets and liabilities of discontinued operations on the Consolidated Balance Sheet and to

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discontinued operations on the Statement of Consolidated Operations, respectively, for all periods presented. The gains or losses associated with these divested businesses are recorded in discontinued operations on the Statement of Consolidated Operations. The Statement of Consolidated Cash Flows is not required to be reclassified for discontinued operations for any period. Segment information does not include the assets or operating results of businesses classified as discontinued operations for all periods presented. These businesses are expected to be disposed of within one year.

For businesses classified as held for sale that do not qualify for discontinued operations treatment, the balance sheet and cash flow amounts are reclassified from their historical presentation to assets and liabilities of operations held for sale for all periods presented. The results of operations continue to be reported in continuing operations. The gains or losses associated with these divested businesses are recorded in Restructuring and other charges on the Statement of Consolidated Operations. The segment information includes the assets and operating results of businesses classified as held for sale for all periods presented.

Recently Adopted Accounting Guidance. On January 1, 2017, Arconic adopted changes issued by the Financial Accounting Standards Board (“FASB”) to employee share-based payment accounting. Previously, an entity determined for each share-based payment award whether the difference between the deduction for tax purposes and the compensation cost recognized for financial reporting purposes resulted in either an excess tax benefit or a tax deficiency. Excess tax benefits were recognized in additional paid-in capital; tax deficiencies were recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. Excess tax benefits were not recognized until the deduction reduced taxes payable. The changes require all excess tax benefits and tax deficiencies related to share-based payment awards to be recognized as income tax expense or benefit in the Statement of Consolidated Operations. The tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. In addition, the presentation of excess tax benefits related to share-based payment awards in the statement of cash flows changed. Previously, excess tax benefits were separated from other income tax cash flows and classified as a financing activity. The changes require excess tax benefits to be classified along with other income tax cash flows as an operating activity. Also, the changes require cash paid by an employer when directly withholding shares for tax-withholding purposes to be classified as a financing activity. Further, for a share-based award to qualify for equity classification it previously could not be partially settled in cash in-excess of the employer’s minimum statutory withholding requirements. The changes permit equity classification of share-based awards for withholdings up to the maximum statutory tax rates in applicable jurisdictions. The prospective transition method was utilized for excess tax benefits in the Statement of Consolidated Cash Flows. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB eliminating the requirement for an investor to adjust an equity method investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held as a result of an increase in the level of ownership interest or degree of influence. In addition, an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting must recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to derivative instruments designated as hedging instruments. These changes clarify that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the accounting for Intra-Entity transactions, other than inventory. Previously, no immediate tax impact was recognized in the consolidated financial statements as a result of intra-entity transfers of assets. The previous standard precluded an entity from reflecting a tax benefit or expense from an intra-entity transfer between entities that file separate tax returns, whether or not such entities were in different tax jurisdictions, until the asset was sold to a third party or otherwise recovered. The previous standard also prohibited recognition by the buyer of a deferred tax asset for the temporary difference arising from the excess of the buyer’s tax basis over the cost to the seller. The changes require the current and deferred income tax consequences of the intra-entity transfer to be recorded when the transaction occurs. The exception to defer the tax consequences of inventory transactions is maintained. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of goodwill by eliminating step 2 from the goodwill impairment test, which previously required measurement of any goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. An entity will

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perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit. Arconic applied this new guidance on a prospective basis. See Goodwill policy above for further details.

On January 1, 2017, Arconic adopted changes issued by the FASB which narrow the definition of a business and require an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, which would not constitute the acquisition of a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs. Arconic applied this new guidance on a prospective basis. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of inventory. Previously, an entity was required to measure its inventory at the lower of cost or market, whereby market can be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. The changes required that inventory be measured at the lower of cost and net realizable value, thereby eliminating the use of the other two market methodologies. Net realizable value is defined as the estimated selling prices in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. These changes did not apply to inventories measured using LIFO (last-in, first-out) or the retail inventory method. Arconic applies the net realizable value market option to measure non-LIFO inventories at the lower of cost or market. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

Recently Issued Accounting Guidance. In May 2014, the FASB issued changes to the recognition of revenue from contracts with customers. These changes created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue and, therefore, supersede virtually all existing revenue recognition requirements and guidance. This framework is expected to result in less complex guidance in application while providing a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract(s), (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract(s), and (v) recognize revenue when, or as, the entity satisfies a performance obligation. In August 2015, the FASB deferred the effective date of the new guidance by one year, making these changes effective for Arconic on January 1, 2018.

Arconic will adopt the new guidance using the modified retrospective transition approach, reflecting the cumulative effect of initially applying the new standard to revenue recognition in the first quarter of 2018. The Company had formed a project assessment and adoption team that reviewed contract terms to assess the impact of adopting the new guidance on the Consolidated Financial Statements. While the Company generally recognizes revenue at a point in time upon delivery and transfer of title and risk of loss for most arrangements, based on the contract reviews performed, certain contracts within the Engineered Products and Solutions segment were identified as potentially moving to over time revenue recognition. The Company modified certain contract terms in conjunction with its customers to remain at point-in-time revenue recognition. These modifications will not result in significant changes to revenue, business practices or controls. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements. The Company is in the process of identifying appropriate changes to its business processes and controls, as well as preparing for revisions to accounting policies and expanded disclosures related to revenue recognition in the notes to the Consolidated Financial Statements.

In January 2016, the FASB issued changes to equity investments. These changes require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values using the measurement alternative of cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Also, the impairment assessment of equity investments without readily determinable fair values has been simplified by requiring a qualitative assessment to identify impairment. Also, the new guidance will require changes in fair value of equity securities to be recognized immediately as a component of net income instead of being reported in accumulated other comprehensive loss until the gain (loss) is realized. These changes became effective for Arconic on January 1, 2018 and have been applied on a prospective basis. Arconic elected the measurement alternative for its equity investments that do not have readily determinable fair values. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

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In February 2016, the FASB issued changes to the accounting and presentation of leases. These changes require lessees to recognize a right of use asset and lease liability on the balance sheet for all leases with terms longer than 12 months. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right of use asset and lease liability. Additionally, when measuring assets and liabilities arising from a lease, optional payments should be included only if the lessee is reasonably certain to exercise an option to extend the lease, exercise a purchase option, or not exercise an option to terminate the lease. These changes become effective for Arconic on January 1, 2019.  Arconic’s current operating lease portfolio is primarily comprised of land and buildings, plant equipment, vehicles, and computer equipment.  A cross-functional implementation team is in process of determining the scope of arrangements that will be subject to this standard as well as assessing the impact to the Company’s systems, processes and internal controls.  Management is evaluating the impact of these changes on the Consolidated Financial Statements, which will require right of use assets and lease liabilities be recorded in the consolidated balance sheet for operating leases. Therefore, an estimate of the impact is not currently determinable.  However, the adoption is not expected to have a material impact on the Statement of Consolidated Operations.  

In June 2016, the FASB added a new impairment model (known as the current expected credit loss (CECL) model) that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses. The CECL model applies to most debt instruments, trade receivables, lease receivables, financial guarantee contracts, and other loan commitments. The CECL model does not have a minimum threshold for recognition of impairment losses and entities will need to measure expected credit losses on assets that have a low risk of loss. These changes become effective for Arconic on January 1, 2020. Management is currently evaluating the potential impact of these changes on the Consolidated Financial Statements.

In August 2016, the FASB issued changes to the classification of certain cash receipts and cash payments within the statement of cash flows. The guidance identifies eight specific cash flow items and the sections where they must be presented within the statement of cash flows. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. As of result of the adoption, Arconic will reclassify cash received related to beneficial interest in previously transferred trade accounts receivables from operating activities to investing activities in the Statement of Consolidated Cash Flows. This reclassification is expected to have a material impact on the Statement of Consolidated Cash Flows, but does not reflect a change in our underlying business or activities. Additionally, Arconic will reclassify cash paid for debt prepayments including extinguishment costs from operating activities to financing activities in the Statement of Consolidated Cash Flows.

In November 2016, the FASB issued changes to the classification of cash and cash equivalents within the statement of cash flow. Restricted cash and restricted cash equivalents will be included within the cash and cash equivalents line on the cash flow statement and a reconciliation must be prepared to the statement of financial position. Transfers between restricted cash and restricted cash equivalents and cash and cash equivalents will no longer be presented as cash flow activities in the statement of cash flows and for material balances of restricted cash and restricted cash equivalents an entity must disclose information regarding the nature of the restrictions. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. Management has determined that the adoption of this guidance will not have a material impact on the Statement of Consolidated Cash Flows.

In March 2017, the FASB issued changes to shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. These changes become effective for Arconic on January 1, 2019 and early adoption is permitted. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In March 2017, the FASB issued changes to the presentation of net periodic pension cost and net periodic postretirement benefit cost. The new guidance requires registrants to present the service cost component of net periodic benefit cost in the same income statement line item or items as other employee compensation costs arising from services rendered during the period. Also, only the service cost component will be eligible for asset capitalization. Registrants will present the other components of net periodic benefit cost separately from the service cost component; and, the line item or items used in the income statement to present the other components of net periodic benefit cost must be disclosed. These changes became effective for Arconic on January 1, 2018 and will be adopted retrospectively for the presentation of the service cost component and the other components of net periodic benefit cost in the income statement, and prospectively for the asset capitalization of the service cost component of net periodic benefit cost. The Company currently records non-service related net periodic pension cost and net periodic postretirement benefit cost within Cost of goods sold, Selling, general, administrative and other expenses and Research and development expenses and upon the adoption of this standard will be recorded separately from service cost in the Other income, net line item in the Statement of Consolidated Operations. The impact of the retrospective

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adoption of this guidance will be an increase to consolidated Operating income of approximately $154 and $135 while there will be no impact to consolidated Net loss for the years ended December 31, 2017 and 2016, respectively. The prospective adoption of the asset capitalization of only the service cost component will have an impact of approximately $20 in the first quarter of 2018 Statement of Consolidated Operations.

In May 2017, the FASB issued clarification to guidance on the modification accounting criteria for share-based payment awards. The new guidance requires registrants to apply modification accounting unless three specific criteria are met. The three criteria are 1) the fair value of the award is the same before and after the modification, 2) the vesting conditions are the same before and after the modification and 3) the classification as a debt or equity award is the same before and after the modification. These changes became effective for Arconic on January 1, 2018 and are to be applied prospectively to new awards granted after adoption. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In August 2017, the FASB issued guidance that will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. These changes become effective for Arconic on January 1, 2019. For cash flow and net investment hedges existing at the date of adoption, Arconic will apply a cumulative-effect adjustment related to eliminating the separate measurement of ineffectiveness to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the beginning of the fiscal year in which the amendment is adopted. The amended presentation and disclosure guidance is required only prospectively. Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

In February 2018, the FASB issued guidance that allows a reclassification from Accumulated other comprehensive loss to Accumulated deficit for stranded tax effects resulting from the Tax Cuts and Jobs Act enacted on December 22, 2017. These changes become effective for Arconic on January 1, 2019.  Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

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B. Accumulated Other Comprehensive Loss

The following table details the activity of the four components that comprise Accumulated other comprehensive loss for both Arconic’s shareholders and noncontrolling interests:

	Arconic									Noncontrolling Interests
	2017			2016			2015			2017			2016			2015
Pension and other postretirement benefits (U)
Balance at beginning of period	$	(2,010	)	$	(3,611	)	$	(3,601	)	$	—		$	(56	)	$	(64	)
Other comprehensive (loss) income:
Unrecognized net actuarial loss and prior service cost/benefit	(466		)	(1,112		)	(478		)	—			(9		)	5
Tax benefit (expense)	102			380			170			—			3			(1		)
Total Other comprehensive (loss) income before reclassifications, net of tax	(364		)	(732		)	(308		)	—			(6		)	4
Amortization of net actuarial loss and prior service cost/benefit(1)	222			389			458			—			4			6
Tax expense(2)	(78		)	(136		)	(160		)	—			(1		)	(2		)
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	144			253			298			—			3			4
Total Other comprehensive (loss) income	(220		)	(479		)	(10		)	—			(3		)	8
Transfer to Alcoa Corporation	—			2,080			—			—			59			—
Balance at end of period	$	(2,230	)	$	(2,010	)	$	(3,611	)	$	—		$	—		$	(56	)
Foreign currency translation
Balance at beginning of period	$	(689	)	$	(2,412	)	$	(846	)	$	(2	)	$	(780	)	$	(351	)
Other comprehensive income (loss)(3)	252			268			(1,566		)	2			182			(429		)
Transfer to Alcoa Corporation	—			1,455			—			—			596			—
Balance at end of period	$	(437	)	$	(689	)	$	(2,412	)	$	—		$	(2	)	$	(780	)
Available-for-sale securities
Balance at beginning of period	$	132		$	(5	)	$	—		$	—		$	—		$	—
Other comprehensive (loss) income (4)	(134		)	137			(5		)	—			—			—
Transfer to Alcoa Corporation	—			—			—			—			—			—
Balance at end of period	$	(2	)	$	132		$	(5	)	$	—		$	—		$	—
Cash flow hedges
Balance at beginning of period	$	(1	)	$	597		$	(230	)	—			$	(3	)	$	(2	)
Other comprehensive income (loss):
Net change from periodic revaluations	37			(843		)	1,138			—			36			(1		)
Tax (expense) benefit	(9		)	252			(340		)	—			(10		)	—
Total Other comprehensive income (loss) before reclassifications, net of tax	28			(591		)	798			—			26			(1		)
Net amount reclassified to earnings:
Aluminum contracts(5)	(2		)	1			21			—			—			—
Energy contracts(6)	—			(49		)	6			—			(34		)	—
Foreign exchange contracts(5)	—			—			5			—			—			—
Interest rate contracts(7)	—			9			1			—			5			—
Nickel contracts(6)	(1		)	1			2			—			—			—
Sub-total	(3		)	(38		)	35			—			(29		)	—
Tax benefit (expense)(2)	1			12			(6		)	—			8			—
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	(2		)	(26		)	29			—			(21		)	—
Total Other comprehensive income (loss)	26			(617		)	827			—			5			(1		)
Transfer to Alcoa Corporation	—			19			—			—			(2		)	—
Balance at end of period	$	25		$	(1	)	$	597		$	—		$	—		$	(3	)

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⁽¹⁾  These amounts were included in the computation of net periodic benefit cost for pension and other postretirement benefits (see Note T).

⁽²⁾  These amounts were included in Provision for income taxes on the accompanying Statement of Consolidated Operations.

⁽³⁾  In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.

⁽⁴⁾  Realized gains and losses were included in Other income, net on the accompanying Statement of Consolidated Operations.

⁽⁵⁾  These amounts were included in Sales on the accompanying Statement of Consolidated Operations.

⁽⁶⁾  These amounts were included in Cost of goods sold on the accompanying Statement of Consolidated Operations.

⁽⁷⁾  These amounts were included in Interest expense on the accompanying Statement of Consolidated Operations.

⁽⁸⁾  A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings. These amounts were reflected on the accompanying Statement of Consolidated Operations in the line items indicated in footnotes 1 through 7.

C. Separation Transaction and Discontinued Operations

On November 1, 2016, Arconic completed the Separation Transaction. Alcoa Inc., which was re-named Arconic Inc., continues to own the Global Rolled Products (except for the Warrick, IN rolling operations and the equity interest in the rolling mill at the joint venture in Saudi Arabia), Engineered Products and Solutions, and Transportation and Construction Solutions segments. Alcoa Corporation includes the Alumina and Primary Metals segments and the aforementioned Warrick, IN rolling operations and equity interest in the rolling mill at the joint venture in Saudi Arabia, both of which were formally part of the Global Rolled Products segment.

Arconic completed the Separation Transaction by distribution on November 1, 2016 of 80.1% of the outstanding common stock of Alcoa Corporation to the Company’s shareholders of record (the “Distribution”) as of the close of business on October 20, 2016 (the “Record Date”). Arconic retained 19.9% of the Alcoa Corporation common stock (36,311,767 shares). In the Distribution, each Company shareholder received one share of Alcoa Corporation common stock for every three shares of Arconic common stock held as of the close of business on the Record Date. Shareholders received cash in lieu of fractional shares of Alcoa Corporation common stock. The Company had recorded the retained interest as a cost method investment in Investment in common stock of Alcoa Corporation in the December 2016 Consolidated Balance Sheet. The fair value of Arconic’s retained interest in Alcoa Corporation was $1,020 at December 31, 2016 and was based on the closing stock price of Alcoa Corporation as of December 31, 2016 multiplied by the number of shares of Alcoa Corporation common stock owned by the Company at that date.

In February 2017, Arconic sold 23,353,000 of its shares of Alcoa Corporation common stock at $38.03 per share, which resulted in cash proceeds of $888 which were recorded in Sales of investments within Investing Activities in the accompanying Statement of Consolidated Cash Flows, and a gain of $351 which was recorded in Other income, net in the accompanying Statement of Consolidated Operations. In April and May 2017, the Company acquired a portion of its outstanding notes held by two investment banks (the “Investment Banks”) in exchange for cash and the Company’s remaining 12,958,767 Alcoa Corporation shares (valued at $35.91 per share) (the “Debt-for-Equity Exchange”) (See Note I). A gain of $167 on the Debt-for-Equity Exchange was recorded in Other income, net in the accompanying Statement of Consolidated Operations. As of May 4, 2017, the Company no longer maintained a retained interest in Alcoa Corporation common stock.

On October 31, 2016, Arconic entered into several agreements with Alcoa Corporation that govern the relationship of the parties following the completion of the Separation Transaction. These agreements include the following: Separation and Distribution Agreement, Transition Services Agreement, Tax Matters Agreement, Employee Matters Agreement, Alcoa Corporation to Arconic Inc. Patent, Know-How, and Trade Secret License Agreement, Arconic Inc. to Alcoa Corporation Patent, Know-How, and Trade Secret License Agreement, Alcoa Corporation to Arconic Inc. Trademark License Agreement, Toll Processing and Services Agreement (the “Toll Processing Agreement”), Master Agreement for the Supply of Primary Aluminum, Massena Lease and Operations Agreement, Fusina Lease and Operations Agreement, and Stockholder and Registration Rights Agreement.

Effective November 1, 2016, Arconic entered into a Toll Processing Agreement with Alcoa Corporation for the tolling of metal for the Warrick, IN rolling mill which became a part of Alcoa Corporation upon completion of the Separation Transaction. As part of this arrangement, Arconic provides a toll processing service to Alcoa Corporation to produce can sheet products at its facility in Tennessee through the expected end date of the contract, December 31, 2018. Alcoa Corporation supplies all required raw materials to Arconic and Arconic processes the raw materials into finished can sheet coils ready for shipment to the end customer. Tolling revenues for 2017 and the two-month period ended December 31, 2016 and accounts receivable at

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December 31, 2017 and December 31, 2016 were not material to the consolidated results of operations and financial position for the years ended December 31, 2017 and December 31, 2016.

As part of the Separation Transaction, Arconic was required to provide maximum potential future payment guarantees for Alcoa Corporation issued on behalf of a third party, guarantees related to two long-term Alcoa Corporation energy supply agreements, guarantees related to certain Alcoa Corporation environmental liabilities and energy supply contracts, letters of credit and surety bonds related to Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016, and letters of credit for certain Alcoa Corporation equipment leases and energy contracts (see Note K).

As part of the Separation Transaction, Arconic had recorded a receivable in the December 2016 Consolidated Balance Sheet for the net after-tax proceeds from Alcoa Corporation’s sale of the Yadkin Hydroelectric Project. The transaction closed and the Company received proceeds of $238 in the first quarter of 2017 and the remaining $5 in the second quarter of 2017. The $243 proceeds were included in Other within Investing Activities in the Statement of Consolidated Cash Flows.

The results of operations of Alcoa Corporation were presented as discontinued operations in the Statement of Consolidated Operations as summarized below:

	Ten months ended October 31,			Year ended  December 31,
	2016			2015
Sales	$	6,752		$	10,121
Cost of goods sold (exclusive of expenses below)	5,655			7,965
Selling, general administrative, and other expenses	164			214
Research and development	28			69
Provision for depreciation, depletion and amortization	593			772
Restructuring and other charges	102			981
Interest expense	28			25
Other (income) expenses, net	(75		)	30
Income from discontinued operations before income taxes	257			65
Provision for income taxes	73			106
Income (loss) from discontinued operations after income taxes	184			(41		)
Less: Net income from discontinued operations attributable to noncontrolling interests	63			124
Net income (loss) from discontinued operations	$	121		$	(165	)

During 2017, 2016 and 2015, Arconic recognized $18 ($12 after-tax), $193 ($158 after-tax) and $24 ($24 after-tax), respectively, in Selling, general administrative, and other expenses on the accompanying Statement of Consolidated Operations for costs related to the Separation Transaction. In addition, Arconic also incurred capital expenditures and debt issuance costs of $110 during 2016 related to the Separation Transaction. None of the aforementioned costs and expenses related to the Separation Transaction were reclassified into discontinued operations.

On November 1, 2016, management evaluated the net assets of Alcoa Corporation for potential impairment and determined that no impairment charge was required.

The cash flows related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows for 2016 and all prior periods presented. The following table presents depreciation, depletion and amortization, restructuring and other charges, and purchases of property, plant and equipment of the discontinued operations related to Alcoa Corporation:

For the year ended December 31,	2016		2015
Depreciation, depletion and amortization	$	593	$	772
Restructuring and other charges	$	102	$	981
Capital expenditures	$	298	$	391

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D. Restructuring and Other Charges

Restructuring and other charges for each year in the three-year period ended December 31, 2017 were comprised of the following:

	2017			2016			2015
Asset impairments	$	58		$	80		$	—
Layoff costs	64			70			97
Net loss on divestitures of businesses (F)	57			3			136
Other	(3		)	27			(11		)
Reversals of previously recorded layoff costs	(11		)	(25		)	(8		)
Restructuring and other charges	$	165		$	155		$	214

Layoff costs were recorded based on approved detailed action plans submitted by the operating locations that specified positions to be eliminated, benefits to be paid under existing severance plans, union contracts or statutory requirements, and the expected timetable for completion of the plans.

2017 Actions. In 2017, Arconic recorded Restructuring and other charges of $165 ($143 after-tax), which were comprised of the following components: $69 ($47 after-tax) for layoff costs related to cost reduction initiatives including the separation of approximately 880 employees (400 in the Engineered Products and Solutions segment, 245 in the Global Rolled Products segment, 135 in the Transportation and Construction Solutions segment and 100 in Corporate), a charge of $60 ($60 after-tax) related to the sale of the Fusina, Italy rolling mill; a charge of $41 ($41 after-tax) for the impairment of assets associated with the agreement to sell the Latin America Extrusions business (see Note F); a net benefit of $6 ($4 after-tax), for the reversal of forfeited executive stock compensation of $13, partially offset by a charge of $7 for the related severance; a net charge of $12 ($7 after-tax) for other miscellaneous items; and a favorable benefit of $11 ($8 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, approximately 300 of the 880 employees were separated. The remaining separations for 2017 restructuring programs are expected to be completed by the end of 2018. In 2017, cash payments of $28 were made against layoff reserves related to 2017 restructuring programs.

2016 Actions. In 2016, Arconic recorded Restructuring and other charges of $155 ($114 after-tax), which were comprised of the following components: $57 ($46 after-tax) for costs related to the exit of certain legacy Firth Rixson operations in the U.K.; $37 ($24 after-tax) for exit costs related to the decision to permanently shut down a can sheet facility; $20 ($14 after-tax) for costs related to the closures of five facilities, primarily in the Transportation and Construction Solutions segment and Engineered Products and Solutions segment, including the separation of approximately 280 employees; $53 ($33 after-tax) for other layoff costs, including the separation of approximately 1,315 employees (1,045 in the Engineered Products and Solutions segment, 210 in Corporate, 30 in the Global Rolled Products segment and 30 in the Transportation and Construction Solutions segment); $11 ($8 after-tax) for other miscellaneous items, including $3 ($2 after-tax) for the sale of Remmele Medical; $2 ($1 after-tax) for a pension settlement; and $25 ($12 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

In 2016, management made the decision to exit certain legacy Firth Rixson facilities in the U.K. Costs related to these actions included asset impairments and accelerated depreciation of $51; other exit costs of $4; and $2 for the separation of 60 employees.

Also in 2016, management approved the shutdown and demolition of the can sheet facility in Tennessee upon completion of the Toll Processing Agreement with Alcoa Corporation. Costs related to this action included $21 in asset impairments; $9 in other exit costs; and $7 for the separation of 145 employees. The other exit costs of $9 represent $4 in asset retirement obligations and $3 in environmental remediation, both of which were triggered by the decision to permanently shut down and demolish the can sheet facility in Tennessee, and $2 in other exit costs.

As of December 31, 2017, approximately 1,280 of the 1,700 (previously 1,750) employees were separated. The total number of employees associated with 2016 restructuring programs was updated to reflect employees, who were initially identified for separation, accepting other positions within Arconic and natural attrition. The remaining separations for 2016 restructuring programs are expected to be completed by the end of 2018. In 2017 and 2016, cash payments of $26 and $16 were made against layoff reserves related to 2016 restructuring programs.

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2015 Actions. In 2015, Arconic recorded Restructuring and other charges of $214 ($192 after-tax), which were comprised of the following components: a $136 ($134 after-tax) net loss related to the March 2015 divestiture of a rolling mill in Russia and post-closing adjustments associated with the December 2014 divestitures of three rolling mills located in Spain and France; $97 ($70 after-tax) for layoff costs, including the separation of approximately 1,505 employees (590 in the Engineered Products and Solutions segment, 425 in the Transportation and Construction Solutions segment, 400 in Corporate and 90 in the Global Rolled Products segment); an $18 ($13 after-tax) gain on the sale of land related to one of the rolling mills in Australia that was permanently closed in December 2014; a net charge of $7 ($4 after-tax) for other miscellaneous items; and $8 ($3 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, the separations associated with the 2015 restructuring programs were essentially complete. In 2017, 2016 and 2015, cash payments of $5, $55 and $18, respectively, were made against layoff reserves related to 2015 restructuring programs.

Arconic does not include Restructuring and other charges in the results of its reportable segments. The pre-tax impact of allocating such charges to segment results would have been as follows:

	2017		2016		2015
Engineered Products and Solutions	$	30	$	78	$	46
Global Rolled Products	72		40		121
Transportation and Construction Solutions	52		14		8
Segment total	154		132		175
Corporate	11		23		39
Total restructuring and other charges	$	165	$	155	$	214

Activity and reserve balances for restructuring charges were as follows:

	Layoff costs			Other exit costs			Total
Reserve balances at December 31, 2014	$	48		$	20		$	68
2015:
Cash payments	(45		)	(12		)	(57		)
Restructuring charges	97			7			104
Other*	(16		)	(6		)	(22		)
Reserve balances at December 31, 2015	84			9			93
2016:
Cash payments	(73		)	(13		)	(86		)
Restructuring charges	70			27			97
Other*	(31		)	(14		)	(45		)
Reserve balances at December 31, 2016	50			9			59
2017:
Cash payments	(59		)	(6		)	(65		)
Restructuring charges	64			1			65
Other*	1			(2		)	(1		)
Reserve balances at December 31, 2017	$	56		$	2		$	58

* Other includes reversals of previously recorded restructuring charges and the effects of foreign currency translation. In 2017, Other for layoff costs also includes the reclassification of a stock awards reversal of $13. In 2016, Other for other exit costs also included a reclassification of $8 in asset retirement and $2 in environmental obligations, as these liabilities were included in Arconic’s separate reserves for asset retirement obligations and environmental remediation. Other for other exit costs also included a reclassification of $4 in legal obligations, as these liabilities were included in Arconic’s separate reserves for legal costs. In 2015, Other for other exit costs included a reclassification of $5 for certain obligations included in Arconic’s separate reserves for warranties, lease terminations and tax indemnities.

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The remaining reserves are expected to be paid in cash during 2018.

E. Goodwill and Other Intangible Assets

The following table details the changes in the carrying amount of goodwill:

	Engineered Products and Solutions			Global Rolled Products			Transportation and Construction Solutions			Corporate*		Total
Balances at December 31, 2015
Goodwill	$	4,660		$	201		$	111		$	330	$	5,302
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,660			201			58			330		5,249
Acquisitions and Divestitures (F)	47			—			—			—		47
Translation and other	(128		)	(20		)	(1		)	1		(148		)
Balances at December 31, 2016
Goodwill	4,579			181			110			331		5,201
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,579			181			57			331		5,148
Impairment (A)	(719		)	—			—			—		(719		)
Translation and other	89			12			3			2		106
Balances at December 31, 2017
Goodwill	4,668			193			113			333		5,307
Accumulated impairment losses	(719		)	—			(53		)	—		(772		)
	$	3,949		$	193		$	60		$	333	$	4,535

* As of December 31, 2017, the amount reflected in Corporate is allocated to Arconic’s three reportable segments ($256 to Engineered Products and Solutions, $59 to Global Rolled Products and $18 to Transportation and Construction Solutions) for purposes of impairment testing (see Goodwill policy in Note A). This goodwill is reflected in Corporate for segment reporting purposes because it is not included in management’s assessment of performance by the three reportable segments.

In 2017, Arconic recognized an impairment of goodwill in the amount of $719 related to the annual impairment review of the AFE reporting unit which is included in the Engineered Products and Solutions segment. In 2015, Arconic recognized an impairment of goodwill in the amount of $25 related to the annual impairment review of the soft alloy extrusion business reporting unit which is included in the Transportation and Construction Solutions segment (see Goodwill policy in Note A).

Other intangible assets were as follows:

December 31, 2017	Gross carrying amount		Accumulated amortization
Computer software	$	789	$	(674	)
Patents and licenses	110		(107		)
Other intangibles	953		(116		)
Total amortizable intangible assets	1,852		(897		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,884	$	(897	)

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December 31, 2016	Gross carrying amount		Accumulated amortization
Computer software	$	755	$	(623	)
Patents and licenses	110		(102		)
Other intangibles	897		(81		)
Total amortizable intangible assets	1,762		(806		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,794	$	(806	)

Computer software consists primarily of software costs associated with an enterprise business solution (EBS) within Arconic to drive common systems among all businesses.

Amortization expense related to the intangible assets in the tables above for the years ended December 31, 2017, 2016, and 2015 was $71, $65, and $67, respectively, and is expected to be in the range of approximately $60 to $75 annually from 2018 to 2022.

F. Acquisitions and Divestitures

Pro forma results of the Company, assuming all acquisitions described below were made at the beginning of the earliest prior period presented, would not have been materially different from the results reported.

2017 Divestitures. In March 2017, Arconic completed the sale of its Fusina, Italy rolling mill to Slim Aluminium. While owned by Arconic, the operating results and assets and liabilities of the Fusina, Italy rolling mill were included in the Global Rolled Products segment. As part of the transaction, Arconic injected $10 of cash into the business and provided a third-party guarantee with a fair value of $5 related to Slim Aluminium’s environmental remediation. The Company recorded a loss on the sale of $60, which was recorded in Restructuring and other charges (see Note D) on the Statement of Consolidated Operations for 2017. The rolling mill generated third-party sales of approximately $54 and $165 for 2017 and 2016, respectively. At the time of the divestiture, the rolling mill had approximately 312 employees.

In December 2017, Arconic entered into an agreement to sell its Latin America Extrusions business for $10 million in cash, subject to working capital and other adjustments. The Latin America Extrusions business operates primarily in Brazil and is part of the Company’s Transportation and Construction Solutions segment. Following customary regulatory and anti-trust approvals, the ownership of this business is expected to be transferred to a subsidiary of Hydro Extruded Solutions AS in the first half of 2018.  As a result of the transaction, Arconic recognized a charge of $41 million in the fourth quarter of 2017 primarily related to the non-cash impairment of the net book value of the business (See Notes A and D).

2016 Divestitures. In April 2016, Arconic completed the sale of the Remmele Medical business to LISI MEDICAL for $102 in cash ($99 net of transaction costs), which was included in Proceeds from the sale of assets and businesses on the accompanying Statement of Consolidated Cash Flows. This business, which was part of the RTI International Metals Inc. (RTI) acquisition (see below), manufactured precision-machined metal products for customers in the minimally invasive surgical device and implantable device markets. Since this transaction occurred within a year of the completion of the RTI acquisition, no gain was recorded on this transaction as the excess of the proceeds over the carrying value of the net assets of this business was reflected as a purchase price adjustment (decrease to goodwill of $44) to the final allocation of the purchase price related to Arconic’s acquisition of RTI. While owned by Arconic, the operating results and assets and liabilities of this business were included in the Engineered Products and Solutions segment. This business generated sales of approximately $20 from January 1, 2016 through the divestiture date, April 29, 2016, and, at the time of the divestiture, had approximately 330 employees.

2015 Acquisitions. In March 2015, Arconic completed the acquisition of an aerospace structural castings company, TITAL, for $204 (€188) in cash (an additional $1 (€1) was paid in September 2015 to settle working capital in accordance with the purchase agreement). TITAL, a privately held company with approximately 650 employees at the time of the acquisition and based in Germany, produces aluminum and titanium investment casting products for the aerospace and defense markets. The purpose of this acquisition was to capture increasing demand for advanced jet engine components made of titanium, establish titanium-casting capabilities in Europe, and expand existing aluminum casting capacity. The assets, including the associated goodwill, and liabilities of this business were included within Arconic’s Engineered Products and Solutions segment since the date of acquisition. Based on the preliminary allocation of the purchase price, goodwill of $118 was recorded for this transaction. In the first quarter of 2016, the allocation of the purchase price was finalized, based, in part, on the completion of a

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third-party valuation of certain assets acquired, resulting in a $1 reduction of the initial goodwill amount. None of the $117 in goodwill is deductible for income tax purposes and no other intangible assets were identified.

In July 2015, Arconic completed the acquisition of RTI, a U.S. company that was publicly traded on the New York Stock Exchange under the ticker symbol “RTI.” Arconic purchased all outstanding shares of RTI common stock in a stock-for-stock transaction valued at $870 (based on the $9.96 per share July 23, 2015 closing price of Arconic’s common stock). Each issued and outstanding share of RTI common stock prior to the completion of the transaction was converted into the right to receive 2.8315 shares of Arconic common stock. In total, Arconic issued 29,132,471 shares (87,397,414 shares pre-reverse stock split – see Note O) of its common stock to consummate this transaction, which was not reflected in the accompanying Statement of Consolidated Cash Flows as it represents a noncash financing activity. The exchange ratio was the quotient of a $41 per RTI common share acquisition price and the $14.48 per share March 6, 2015 closing price of Arconic’s common stock. In addition to the transaction price, Arconic also paid $25 ($19 after-tax) in professional fees and costs related to this acquisition. This amount was recorded in Selling, general administrative, and other expenses on the accompanying Statement of Consolidated Operations.

RTI is a global supplier of titanium and specialty metal products and services for the commercial aerospace, defense, energy, and medical device end markets. The purpose of this acquisition was to expand Arconic’s range of titanium offerings and add advanced technologies and materials, primarily related to the aerospace end market. In 2014, RTI generated net sales of $794 and had approximately 2,600 employees. The operating results and assets and liabilities of RTI were included within Arconic’s Engineered Products and Solutions segment since the date of acquisition. Third-party sales and Adjusted EBITDA (Arconic’s primary segment performance measure – see Note N) of RTI from the acquisition date through December 31, 2015 were $309 and $21, respectively. During the third quarter of 2016, the final purchase price allocation was completed.

Arconic recognized goodwill of $298, which represents the earnings growth potential of RTI, Arconic’s ability to expand its titanium capabilities in the aerospace market, and expected synergies from combining the operations of the two companies. This goodwill was allocated to a new Arconic reporting unit associated with the Engineered Products and Solutions segment, ATEP, which consists solely of the acquired RTI business. None of this goodwill is deductible for income tax purposes. Arconic also recorded intangible assets of $37 consisting mainly of customer relationships which are being amortized over a period of 20 years.

As part of this acquisition, Arconic assumed the obligation to repay two tranches of convertible debt; one tranche was due and settled in cash on December 1, 2015 (principal amount of $115) and the other tranche is due on October 15, 2019 (principal amount of $403), unless earlier converted or purchased by Arconic at the holder’s option under specific conditions. Upon conversion of the 2019 convertible notes, holders will receive, at Arconic’s election, cash, shares of common stock (approximately 14,294,000 shares using the December 31, 2017 conversion rate of 35.5119 shares per $1,000 (not in millions) bond or per-share conversion price of $28.1596), or a combination of cash and shares. On the maturity date, each holder of outstanding notes will be entitled to receive $1,000 (not in millions) in cash for each $1,000 (not in millions) bond, together with accrued and unpaid interest. The cash conversion feature requires the convertible notes to be bifurcated into a liability component and an equity component. The fair value of the liability component was determined by calculating the net present value of the cash flows of the convertible notes using the interest rate of a similar instrument without a conversion feature. The fair value of the equity component is the difference between the fair value of the entire instrument on the date of acquisition and the fair value of the liability and is included as Additional capital on the accompanying Consolidated Balance Sheet.

2015 Divestitures. In 2015, Arconic completed the divestiture of an operation in Russia (see below) and had post-closing adjustments, as provided for in the respective purchase agreements, related to a divestiture completed in December 2014. The divestiture and post-closing adjustments combined resulted in net cash paid of $11 and a net loss of $137, which was recorded in Restructuring and other charges (see Note D) on the accompanying Statement of Consolidated Operations.

In March 2015, Arconic completed the sale of a rolling mill located in Belaya Kalitva, Russia to a wholly-owned subsidiary of Stupino Titanium Company. While owned by Arconic, the operating results and assets and liabilities of the rolling mill were included in the Global Rolled Products segment. The rolling mill generated sales of approximately $130 in 2014 and, at the time of divestiture, had approximately 1,870 employees.

2014 Acquisitions. In November 2014, Arconic acquired Firth Rixson. The purchase price included an earn-out agreement that required Arconic to make earn-out payments up to an aggregate maximum amount of $150 through December 31, 2020 upon certain conditions. This earn-out was contingent on the Firth Rixson forging business in Savannah, Georgia achieving certain identified financial targets through December 31, 2020. During the fourth quarter of 2016, management determined that payment of the maximum amount was not probable based on the forecasted financial performance of this location. Therefore, the fair value of this liability was reduced by $56 with a corresponding credit to Other income, net on the accompanying Statement of Consolidated Operations. During the fourth quarter of 2017, management determined that payment of the

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remaining amount of the contingent liability was not probable based on the forecasted financial performance of this location. Therefore, the fair value of this liability was reduced by $81 to zero at December 31, 2017 with a corresponding credit to Other income, net on the accompanying Statement of Consolidated Operations.

G. Inventories

December 31,	2017		2016
Finished goods	$	669	$	625
Work-in-process	1,349		1,144
Purchased raw materials	381		408
Operating supplies	81		76
	$	2,480	$	2,253

At December 31, 2017 and 2016, the total amount of inventories valued on a LIFO basis was $1,208 and $947, respectively. If valued on an average-cost basis, total inventories would have been $481 and $371 higher at December 31, 2017 and 2016, respectively. During 2017 and 2016, reductions in LIFO inventory quantities caused partial liquidations of the lower cost LIFO inventory base. These liquidations resulted in the recognition of immaterial income amounts in 2017, 2016, and 2015.

H. Properties, Plants, and Equipment, Net

December 31,	2017		2016
Land and land rights	$	140	$	135
Structures:
Engineered Products and Solutions	784		733
Global Rolled Products	1,090		1,061
Transportation and Construction Solutions	268		254
Other	253		248
	2,395		2,296
Machinery and equipment:
Engineered Products and Solutions	3,054		2,728
Global Rolled Products	4,641		4,570
Transportation and Construction Solutions	777		723
Other	358		337
	8,830		8,358
	11,365		10,789
Less: accumulated depreciation and amortization	6,392		6,073
	4,973		4,716
Construction work-in-progress	621		783
	$	5,594	$	5,499

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I. Debt

Long-Term Debt.

December 31,	2017			2016
6.50% Bonds, due 2018	$	—		$	250
6.75% Notes, due 2018	—			750
5.72% Notes, due 2019	500			750
1.63% Convertible Notes, due 2019*	403			403
6.150% Notes, due 2020	1,000			1,000
5.40% Notes, due 2021	1,250			1,250
5.87% Notes, due 2022	627			627
5.125% Notes, due 2024	1,250			1,250
5.90% Notes, due 2027	625			625
6.75% Bonds, due 2028	300			300
5.95% Notes due 2037	625			625
Iowa Finance Authority Loan, due 2042 (4.75%)	250			250
Other**	(23		)	(32		)
	6,807			8,048
Less: amount due within one year	1			4
	$	6,806		$	8,044

* Amount was assumed in conjunction with the acquisition of RTI (see Note F).

** Other includes various financing arrangements related to subsidiaries, unamortized debt discounts related to the outstanding notes and bonds listed in the table above, an equity option related to the convertible notes due in 2019 (see Note F), adjustments to the carrying value of long-term debt related to an interest swap contract accounted for as a fair value hedge that was unwound during 2017, and unamortized debt issuance costs.

The principal amount of long-term debt maturing in each of the next five years is $1 in 2018, $903 in 2019, $1,000 in 2020, $1,250 in 2021, and $627 in 2022.

Public Debt—In April 2017, the Company announced three separate cash tender offers by the Investment Banks for the purchase of the Company’s 6.50% Bonds due 2018 (the “6.50% Bonds”), 6.75% Notes due 2018 (the “6.75% Notes”), and 5.72% Notes due 2019 (the “5.72% Notes”), up to a maximum purchase amount of $1,000 aggregate principal amount of notes, subject to certain conditions.

The Investment Banks purchased notes totaling $805 aggregate principal amount, including $150 aggregate principal amount of 6.50% Bonds, $405 aggregate principal amount of 6.75% Notes, and $250 aggregate principal amount of $5.72% Notes.

During the second quarter of 2017, the Company agreed to acquire the notes from the Investment Banks for $409 in cash plus its remaining investment in Alcoa Corporation common stock (12,958,767 shares valued at $35.91 per share) for total consideration of $874 including accrued and unpaid interest. The Company recorded a charge of $58 ($27 in cash) primarily for the premium for the early redemption of the notes, a benefit of $8 for the proceeds of a related interest rate swap agreement, and a charge of $2 for legal fees associated with the transaction in Interest expense, and recorded a gain of $167 in Other income, net in the accompanying Statement of Consolidated Operations for the Debt-for-Equity Exchange.

On June 19, 2017, the Company completed the early redemption of its remaining outstanding 6.50% Bonds, with aggregate principal amount of $100, and its remaining outstanding 6.75% Notes, with aggregate principal amount of $345, for $479 in cash including accrued and unpaid interest. As a result of the early redemption of the 6.50% Bonds and 6.75% Notes, the Company recorded a charge of $24 in Interest expense in the accompanying Statement of Consolidated Operations for the premium paid for the early redemption of these notes in excess of their carrying value.

In December 2016, Arconic elected to call for redemption the $750 in outstanding principal of its 5.55% Notes due February 2017 (the “2017 Notes”) under the provisions of the 2017 Notes. The total cash paid to the holders of the called 2017 Notes was $770, which includes $17 in accrued and unpaid interest from the last interest payment date up to, but not including, the

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settlement date, and a $3 purchase premium. The purchase premium was recorded in Interest expense on the accompanying Statement of Consolidated Operations. This transaction was completed on December 30, 2016.

The Company has the option to redeem certain of its Notes and Bonds in whole or part, at any time at a redemption price equal to the greater of principal amount or the sum of the present values of the remaining scheduled payments, discounted using a defined treasury rate plus a spread, plus in either case accrued and unpaid interest to the redemption date.

Credit Facilities. On July 25, 2014, Arconic entered into a Five-Year Revolving Credit Agreement (“the Credit Agreement”) with a syndicate of lenders and issuers named therein which provides for a senior unsecured revolving credit facility (the “Credit Facility”). The proceeds are to be used to provide working capital or for other general corporate purposes of Arconic. By an Extension Request and Amendment Letter dated as of June 5, 2015, the maturity date of the Credit Facility was extended to July 25, 2020. In September 2016, Arconic entered into an amendment to the Credit Agreement to permit the Separation Transaction and to amend certain terms of the Credit Agreement including the replacement of the existing financial covenant with a leverage ratio and reduction of total commitments available from $4,000 to $3,000. The amendment became effective on the separation date of November 1, 2016. The previous financial covenant, based upon Consolidated Net Worth (as defined in the Credit Agreement) was replaced. Arconic is required to maintain a ratio of Indebtedness (as defined in the Credit Agreement), to Consolidated EBITDA (as defined in the Credit Agreement) of 4.50 to 1.00 for the period of the four fiscal quarters most recently ended, declining to 3.50 to 1.00 on December 31, 2019 and thereafter.

The Credit Agreement includes additional covenants, including, among others, (a) limitations on Arconic’s ability to incur liens securing indebtedness for borrowed money, (b) limitations on Arconic’s ability to consummate a merger, consolidation or sale of all or substantially all of its assets, and (c) limitations on Arconic’s ability to change the nature of its business. As of December 31, 2017, Arconic was in compliance with all such covenants.

The Credit Facility matures on July 25, 2020, unless extended or earlier terminated in accordance with the provisions of the Credit Agreement. Arconic may make one additional one-year extension request during the remaining term of the Credit Facility, subject to the lender consent requirements set forth in the Credit Agreement. Under the provisions of the Credit Agreement, Arconic will pay a fee up to 0.30% (based on Arconic’s long-term debt ratings as of December 31, 2017) of the total commitment per annum to maintain the Credit Facility.

The Credit Facility is unsecured and amounts payable under it will rank pari passu with all other unsecured, unsubordinated indebtedness of Arconic. Borrowings under the Credit Facility may be denominated in U.S. dollars or euros. Loans will bear interest at a base rate or a rate equal to LIBOR, plus, in each case, an applicable margin based on the credit ratings of Arconic’s outstanding senior unsecured long-term debt. The applicable margin on base rate loans and LIBOR loans will be 0.70% and 1.70% per annum, respectively, based on Arconic’s long-term debt ratings as of December 31, 2017. Loans may be prepaid without premium or penalty, subject to customary breakage costs.

The obligation of Arconic to pay amounts outstanding under the Credit Facility may be accelerated upon the occurrence of an “Event of Default” as defined in the Credit Agreement. Such Events of Default include, among others, (a) Arconic’s failure to pay the principal of, or interest on, borrowings under the Credit Facility, (b) any representation or warranty of Arconic in the Credit Agreement proving to be materially false or misleading, (c) Arconic’s breach of any of its covenants contained in the Credit Agreement, and (d) the bankruptcy or insolvency of Arconic.

There were no amounts outstanding at December 31, 2017 and 2016 and no amounts were borrowed during 2017, 2016 or 2015 under the Credit Facility. In addition to the Credit Facility above, Arconic has a number of other credit facilities that provide a combined borrowing capacity of $715 as of December 31, 2017, of which $640 is due to expire in 2018 and $75 is due to expire in 2019. The purpose of any borrowings under these credit arrangements is to provide for working capital requirements and for other general corporate purposes. The covenants contained in all these arrangements are the same as the Credit Agreement (see above).

In 2017, 2016 and 2015, Arconic borrowed and repaid $810, $1,950, and $1,890, respectively, under the respective credit arrangements. The weighted-average interest rate and weighted-average days outstanding of the respective borrowings during 2017, 2016 and 2015 were 2.6%, 1.9%, and 1.6%, respectively, and 46 days, 49 days, and 69 days, respectively.

Short-Term Debt. At December 31, 2017 and 2016, short-term debt was $38 and $40, respectively. These amounts included $33 and $31 at December 31, 2017 and 2016, respectively, related to accounts payable settlement arrangements with certain vendors and third-party intermediaries. These arrangements provide that, at the vendor’s request, the third-party intermediary advances the amount of the scheduled payment to the vendor, less an appropriate discount, before the scheduled payment date and Arconic makes payment to the third-party intermediary on the date stipulated in accordance with the commercial terms negotiated with its vendors. Arconic records imputed interest related to these arrangements in Interest expense on the accompanying Statement of Consolidated Operations.

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Commercial Paper. Arconic had no outstanding commercial paper at December 31, 2017 and 2016. In 2017 and 2016, the average outstanding commercial paper was $67 and $127, respectively. Commercial paper matures at various times within one year and had an annual weighted average interest rate of 1.6%, 1.1%, and 0.6% during 2017, 2016, and 2015, respectively.

J. Other Noncurrent Liabilities and Deferred Credits

December 31,	2017		2016
Environmental remediation (L)	$	253	$	260
Income taxes (Q)	162		154
Accrued compensation and retirement costs	218		216
Contingent payment related to an acquisition (F)	—		78
Other	126		162
	$	759	$	870

K. Contingencies and Commitments

Contingencies

Environmental Matters. Arconic participates in environmental assessments and cleanups at more than 100 locations. These include owned or operating facilities and adjoining properties, previously owned or operating facilities and adjoining properties, and waste sites, including Superfund (Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) sites.

A liability is recorded for environmental remediation when a cleanup program becomes probable and the costs can be reasonably estimated. As assessments and cleanups proceed, the liability is adjusted based on progress made in determining the extent of remedial actions and related costs. The liability can change substantially due to factors such as the nature and extent of contamination, changes in remedial requirements, and technological changes, among others.

Arconic’s remediation reserve balance was $294 at December 31, 2017 and $308 at December 31, 2016 (of which $41 and $48, respectively, was classified as a current liability), and reflects the most probable costs to remediate identified environmental conditions for which costs can be reasonably estimated. In 2017, the remediation reserve increased by $5 due to a net charge associated with a number of sites and was recorded in Costs of goods sold on the accompanying Statement of Consolidated Operations. The change in the reserve also reflects an increase of $8 due to a reclassification of amounts included in other reserves within Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet, and a decrease of $1 due to the effects of foreign currency translation. Payments related to remediation expenses applied against the reserve were $26 in 2017 and include expenditures currently mandated, as well as those not required by any regulatory authority or third party.

Included in annual operating expenses are the recurring costs of managing hazardous substances and environmental programs. These costs are estimated to be approximately 1% or less of cost of goods sold.

The following discussion provides details regarding the current status of the most significant remediation reserve related to a current Arconic site.

Massena West, NY—Arconic has an ongoing remediation project related to the Grasse River, which is adjacent to Arconic’s Massena plant site. Many years ago, it was determined that sediments and fish in the river contain varying levels of polychlorinated biphenyls (PCBs). The project, which was selected by the U.S. Environmental Protection Agency (EPA) in a Record of Decision issued in April 2013, is aimed at capping PCB contaminated sediments with concentration in excess of one part per million in the main channel of the river and dredging PCB contaminated sediments in the near-shore areas where total PCBs exceed one part per million. At December 31, 2017 and December 31, 2016, the reserve balance associated with this matter was $215 and $228, respectively. Arconic is in the planning and design phase of the project, which phase is now expected to be completed in 2018. Originally, the design was scheduled to be completed and approved by the EPA in 2017, but in the third quarter of 2017, the New York State Department of Environmental Conservation (DEC) sent a letter to EPA requesting revisions to the draft design. That caused EPA to delay their review and comment on the draft design.  EPA has now responded to the DEC letter and while issues remain, Arconic is now able to recommence work on the final design.  Following submittal of the final design and EPA approval, the actual remediation fieldwork is expected to commence and take approximately four years. The majority of the project funding is expected to be incurred between 2018 and 2022.

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Tax. Pursuant to the Tax Matters Agreement (see Note C), dated as of October 31, 2016, entered into between the Company and Alcoa Corporation in connection with the Separation, the Company shares responsibility with Alcoa Corporation for, and Alcoa Corporation has agreed to partially indemnify the Company with respect to the following matter.

As previously reported, in September 2010, following a corporate income tax audit covering the 2003 through 2005 tax years, an assessment was received as a result of Spain’s tax authorities disallowing certain interest deductions claimed by a Spanish consolidated tax group owned by the Company. An appeal of this assessment in Spain’s Central Tax Administrative Court by the Company was denied in October 2013. In December 2013, the Company filed an appeal of the assessment in Spain’s National Court.

On January 16, 2017, Spain’s National Court issued a decision in favor of the Company related to the assessment received in September 2010. The Spanish Tax Administration did not file an appeal within the applicable period. Based on this decision and recent confirming correspondence from the Spanish Tax Administration, the matter is now closed. The Company will not be responsible for any assessment related to the 2003 through 2005 tax years.

Additionally, following a corporate income tax audit of the same Spanish tax group for the 2006 through 2009 tax years, Spain’s tax authorities issued an assessment in July 2013 similarly disallowing certain interest deductions. In August 2013, the Company filed an appeal of this second assessment in Spain’s Central Tax Administrative Court, which was denied in January 2015. The Company filed an appeal of this second assessment in Spain’s National Court in March 2015. Spain’s National Court has not yet rendered a decision related to the assessment received in July 2013. The assessment for the 2006 through 2009 tax years is $155 (€130), including interest.

The Company believes it has meritorious arguments to support its tax position and intends to vigorously litigate the assessments through Spain’s court system. However, in the event the Company is unsuccessful, a portion of the assessments may be offset with existing net operating losses available to the Spanish consolidated tax group, which would be shared between the Company and Alcoa Corporation as provided for in the Tax Matters Agreement. Additionally, while the tax years 2010 through 2013 are closed to audit, it is possible that the Company may receive similar assessments for tax years subsequent to 2013. At this time, the Company is unable to reasonably predict an ultimate outcome for this matter.

Reynobond PE. As previously reported, on June 13, 2017, the Grenfell Tower in London, UK caught fire resulting in fatalities, injuries and damage. A French subsidiary of Arconic, Arconic Architectural Products SAS (AAP SAS), supplied a product, Reynobond PE, to its customer, a cladding system fabricator, which used the product as one component of the overall cladding system on Grenfell Tower. The fabricator supplied its portion of the cladding system to the façade installer, who then completed and installed the system under the direction of the general contractor. Neither Arconic nor AAP SAS was involved in the design or installation of the system used at the Grenfell Tower, nor did it have a role in any other aspect of the building’s refurbishment or original design. Regulatory investigations into the overall Grenfell Tower matter are being conducted, including a criminal investigation by the London Metro Police, a Public Inquiry by the British government and a consumer protection inquiry by a French public authority. AAP SAS sought and received core participant status in the Public Inquiry. The Company will no longer sell the PE product for architectural use on buildings.

In August and September 2017, two purported class action complaints were filed against Arconic and certain officers, directors and/or other parties, alleging that, in light of the Grenfell Tower fire, certain Company filings with the Securities and Exchange Commission contained false and misleading disclosures and omissions in violation of the federal securities laws. Those cases remain pending.

While the Company believes that these cases are without merit and intends to challenge them vigorously, there can be no assurances regarding the ultimate resolution of these matters. Given the preliminary nature of these matters and the uncertainty of litigation, the Company cannot reasonably estimate at this time the likelihood of an unfavorable outcome or the possible loss or range of losses in the event of an unfavorable outcome. The Board of Directors has also received letters, purportedly sent on behalf of shareholders, reciting allegations similar to those made in the federal court lawsuits and demanding that the Board authorize the Company to initiate litigation against members of management, the Board and others. The Board of Directors has appointed a Special Litigation Committee to review these shareholder demand letters and is considering the appropriate course of action. In addition, lawsuits are pending in state court in New York and federal court in Pennsylvania, initiated, respectively, by another purported shareholder and by the Company, concerning the shareholder’s claimed right, which the Company contests, to inspect the Company’s books and records related to the Grenfell Tower fire and Reynobond PE.

Other. In addition to the matters discussed above, various other lawsuits, claims, and proceedings have been or may be instituted or asserted against Arconic, including those pertaining to environmental, product liability, safety and health, employment, and tax matters. While the amounts claimed in these other matters may be substantial, the ultimate liability cannot

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currently be determined because of the considerable uncertainties that exist. Therefore, it is possible that the Company’s liquidity or results of operations in a period could be materially affected by one or more of these other matters. However, based on facts currently available, management believes that the disposition of these other matters that are pending or asserted will not have a material adverse effect, individually or in the aggregate, on the results of operations, financial position or cash flows of the Company.

Commitments

Purchase Obligations. Arconic has entered into purchase commitments for raw materials, energy and other goods and services, which total $861 in 2018, $176 in 2019, $74 in 2020, $13 in 2021, $6 in 2022, and $5 thereafter.

Operating Leases. Certain land and buildings, plant equipment, vehicles, and computer equipment are under operating lease agreements. Total expense for all leases was $113 in 2017, $110 in 2016, and $112 in 2015. Under long-term operating leases, minimum annual rentals are $108 in 2018, $88 in 2019, $62 in 2020, $46 in 2021, $38 in 2022, and $100 thereafter.

Guarantees. At December 31, 2017, Arconic has outstanding bank guarantees related to tax matters, outstanding debt, workers’ compensation, environmental obligations, energy contracts, and customs duties, among others. The total amount committed under these guarantees, which expire at various dates between 2018 and 2026 was $29 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to provide certain guarantees for Alcoa Corporation, which had a combined fair value of $8 and $35 at December 31, 2017 and 2016, respectively, and were included in Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet. Arconic was required to provide payment guarantees for Alcoa Corporation issued on behalf of a third party, and amounts outstanding under these payment guarantees were $197 and $354 at December 31, 2017 and 2016, respectively. These guarantees expire at various times between 2018 and 2024, and relate to project financing for Alcoa Corporation’s aluminum complex in Saudi Arabia. Furthermore, Arconic was required to provide guarantees related to two long-term supply agreements for energy for Alcoa Corporation facilities in the event of an Alcoa Corporation payment default. In October 2017, Alcoa Corporation announced that it had terminated one of the two agreements, the electricity contract with Luminant Generation Company LLC that was tied to its Rockdale Operations, effective as of October 1, 2017. As a result of the termination of the Rockdale electricity contract, Arconic recorded income of $25 in the fourth quarter of 2017 associated with reversing the fair value of the electricity contract guarantee. For the remaining long-term supply agreement, Arconic is required to provide a guarantee up to an estimated present value amount of approximately $1,297.

Arconic was also required to provide guarantees of $50 related to two Alcoa Corporation energy supply contracts. These guarantees expired in March 2017. Additionally, Arconic was required to provide guarantees of $53 related to certain Alcoa Corporation environmental liabilities. Notification of a change in guarantor to Alcoa Corporation was made to the appropriate environmental agencies and as such, Arconic no longer provides these guarantees.

In December 2016, Arconic entered into a one-year claims purchase agreement with a bank covering claims up to $245 related to the Saudi Arabian joint venture and two long-term energy supply agreements. The majority of the premium was paid by Alcoa Corporation.  The agreement matured in December 2017 and was not renewed in 2018 due to the decline in exposure to guarantee claims including a substantial reduction in the guarantees related to the Saudi Arabian joint venture and also the elimination of the guarantee related to the Rockdale energy contract. The decision to enter into a claims purchase agreement will be made on an annual basis going forward.

Letters of Credit. Arconic has outstanding letters of credit primarily related to workers’ compensation, energy contracts and leasing obligations. The total amount committed under these letters of credit, which automatically renew or expire at various dates, mostly in 2018, was $120 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to retain letters of credit of $62 that had previously been provided related to both Arconic and Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016. Alcoa Corporation workers’ compensation claims and letter of credit fees paid by Arconic are being proportionally billed to and are being fully reimbursed by Alcoa Corporation. Additionally, Arconic was required to provide letters of credit for certain Alcoa Corporation equipment leases and energy contracts and, as a result, Arconic had $103 of outstanding letters of credit relating to these liabilities. The entire $103 of outstanding letters of credit were canceled in 2017 when Alcoa Corporation issued its own letters of credit to cover these obligations.

Surety Bonds. Arconic has outstanding surety bonds primarily related to tax matters, contract performance, workers’ compensation, environmental-related matters, and customs duties. The total amount committed under these bonds, which automatically renew or expire at various dates, mostly in 2018, was $54 at December 31, 2017.

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Pursuant to the Separation and Distribution Agreement, Arconic was required to provide surety bonds related to Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016 and, as a result, Arconic has $25 in outstanding surety bonds relating to these liabilities. Alcoa Corporation workers’ compensation claims and surety bond fees paid by Arconic are being proportionately billed to and are being fully reimbursed by Alcoa Corporation.

L. Other Income, Net

	2017			2016			2015
Equity income	$	—		$	(7	)	$	—
Interest income	(19		)	(16		)	(16		)
Foreign currency (gains) losses, net	(5		)	(4		)	51
Net (gain) loss from asset sales	(513		)	11			(42		)
Net loss (gain) on mark-to-market derivative contracts	—			1			(3		)
Other, net	(103		)	(79		)	(18		)
	$	(640	)	$	(94	)	$	(28	)

In 2017, Net gain from assets sales included a gain on the sale of a portion of Arconic’s investment in Alcoa Corporation common stock of $351 (see Note C) and a gain of $167 on the Debt-for-Equity Exchange (see Note I). In 2017, Other, net included an adjustment of $81 to the contingent earn-out liability related to the 2014 acquisition of Firth Rixson (see Note F) and an adjustment of $25 associated with a separation-related guarantee liability (see Note K). In 2016, Other, net included an adjustment of $56 to the contingent earn-out liability and a post-closing adjustment of $20, both related to the acquisition of Firth Rixson. In 2015, Net gain from asset sales included a gain of $19 related to the sale of land around Arconic’s former Sherwin, TX site and a gain of $19 related to the sale of the remaining equity investment in a China rolling mill.

M. Cash Flow Information

Cash paid for interest and income taxes was as follows:

	2017		2016		2015
Interest, net of amount capitalized	$	508	$	524	$	487
Income taxes, net of amount refunded	$	118	$	324	$	345

The details related to cash paid for acquisitions were as follows:

	2017		2016			2015
Assets acquired	$	—	$	—		$	2,003
Liabilities assumed	—		—			(868		)
Equity issued	—		—			(870		)
Working capital adjustment	—		(10		)	—
Increase in Arconic’s shareholders’ equity	—		—			(60		)
Cash paid	—		(10		)	205
Less: cash acquired	—		—			302
Net cash paid	$	—	$	(10	)	$	(97	)

During 2016, Arconic sold various securities held by its captive insurance company for $130, and an equity interest in a natural gas pipeline of $145 (Alcoa Corporation), both of which were included in Sales of investments on the accompanying Statement of Consolidated Cash Flows.

In 2016, Arconic received $457 in proceeds from the redemption of certain company-owned life insurance policies, sold its Intalco smelter wharf property (Alcoa Corporation) for $120, and sold the Remmele Medical business (see Note F) for $102. These amounts were included in Proceeds from the sale of assets and businesses on the accompanying Statement of Consolidated Cash Flows.

Noncash Financing and Investing Activities. On October 2, 2017, all outstanding 24,975,978 depositary shares (each depositary share representing a 1/10th interest in a share of the mandatory convertible preferred stock) were converted at a rate

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of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this equity transaction (see Note O).

In the second quarter of 2017, the Company completed the Debt-for-Equity Exchange with the Investment Banks of the remaining portion of Arconic’s retained interest in Alcoa Corporation common stock for a portion of the Company’s outstanding notes held by the Investment Banks for $465 including accrued and unpaid interest (see Note I).

On October 5, 2016, Arconic completed a 1-for-3 Reverse Stock Split (see Note O). The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares. The par value of the common stock remained at $1.00 per share. Accordingly, Common stock and Additional capital in the Company’s Consolidated Balance Sheet at December 31, 2016 reflect a decrease and increase of $877, respectively.

In August 2016, Arconic retired its outstanding treasury stock consisting of approximately 76 million shares (see Note O). As a result, Common stock and Additional capital were decreased by $76 and $2,563, respectively, to reflect the retirement of the treasury shares.

In July 2015, Arconic purchased all outstanding shares of RTI common stock in a stock-for-stock transaction valued at $870 (see Note F). As a result, Arconic issued 29 million shares (87 million shares—pre-Reverse Stock Split—see Note O) of its common stock to consummate this transaction.

N. Segment and Geographic Area Information

Arconic is a global leader in lightweight metals engineering and manufacturing. Arconic’s innovative, multi-material products, which include aluminum, titanium, and nickel, are used worldwide in aerospace, automotive, commercial transportation, packaging, building and construction, oil and gas, defense, consumer electronics, and industrial applications. Arconic’s segments are organized by product on a worldwide basis. In the first quarter of 2017, the Company changed its primary measure of segment performance from After-tax operating income (ATOI) to Adjusted earnings before interest, tax, depreciation and amortization (“Adjusted EBITDA”). Segment performance under Arconic’s management reporting system is evaluated based on a number of factors; however, the primary measure of performance in 2017 was Adjusted EBITDA. Arconic’s definition of Adjusted EBITDA is net margin plus an add-back for depreciation and amortization. Net margin is equivalent to Sales minus the following items: Cost of goods sold; Selling, general administrative, and other expenses; Research and development expenses; and Provision for depreciation and amortization. Prior period information has been recast to conform to current year presentation. The Adjusted EBITDA presented may not be comparable to similarly titled measures of other companies.

Items required to reconcile Combined segment adjusted EBITDA to Net loss attributable to Arconic include: the Provision for depreciation and amortization; Impairment of goodwill; Restructuring and other charges; the impact of LIFO inventory accounting; metal price lag (the timing difference created when the average price of metal sold differs from the average cost of the metal when purchased by the respective segment — generally, when the price of metal increases, metal price lag is favorable, and when the price of metal decreases, metal price lag is unfavorable); corporate expense (general administrative and selling expenses of operating the corporate headquarters and other global administrative facilities and corporate research and development expenses); other items, including intersegment profit eliminations; Other income, net; Interest expense; Income tax expense; and the results of discontinued operations.

The accounting policies of the segments are the same as those described in the Summary of Significant Accounting Policies (see Note A). Transactions among segments are established based on negotiation among the parties. Differences between segment totals and Arconic’s consolidated totals for line items not reconciled are in Corporate.

Arconic’s operations consist of three worldwide reportable segments as follows:

Engineered Products and Solutions. This segment produces products that are used mostly in the aerospace (commercial and defense), industrial, commercial transportation, and power generation end markets. Such products include fastening systems (titanium, steel, and nickel superalloys) and seamless rolled rings (mostly nickel superalloys); investment castings (nickel superalloys, titanium, and aluminum), including airfoils and forged jet engine components (e.g., jet engine disks); and extruded, machined and formed aircraft parts (titanium and aluminum), all of which are sold directly to customers and through distributors. More than 75% of the third-party sales in this segment are from the aerospace end market. A small part of this segment also produces various forged, extruded, and machined metal products (titanium, aluminum and steel) for the oil and gas, automotive, and land and sea defense end markets. Seasonal decreases in sales are generally experienced in the third quarter of the year due to the European summer slowdown across all end markets.

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Global Rolled Products. This segment produces aluminum sheet and plate for a variety of end markets. This segment includes sheet and plate sold directly to customers and through distributors in the aerospace, automotive, commercial transportation, packaging, building and construction, and industrial products (mainly used in the production of machinery and equipment and consumer durables) end markets. A small portion of this segment also produces aseptic foil for the packaging end market. While the customer base for flat-rolled products is large, a significant amount of sales of sheet and plate is to a relatively small number of customers.

Transportation and Construction Solutions. This segment produces products that are used mostly in the commercial transportation and nonresidential building and construction end markets. Such products include integrated aluminum structural systems, architectural extrusions, and forged aluminum commercial vehicle wheels, which are sold directly to customers and through distributors. A small part of this segment also produces aluminum products for the industrial products end market.

The operating results and assets of Arconic’s reportable segments were as follows:

	Engineered Products and Solutions		Global Rolled Products		Transportation and Construction Solutions		Total
2017
Sales:
Third-party sales	$	5,935	$	4,992	$	1,985	$	12,912
Intersegment sales	—		148		—		148
Total sales	$	5,935	$	5,140	$	1,985	$	13,060
Profit and loss:
Depreciation and amortization	268		205		50		523
Adjusted EBITDA	1,224		599		321		2,144
2016
Sales:
Third-party sales	$	5,728	$	4,864	$	1,802	$	12,394
Intersegment sales	—		118		—		118
Total sales	$	5,728	$	4,982	$	1,802	$	12,512
Profit and loss:
Depreciation and amortization	$	255	$	201	$	48	$	504
Adjusted EBITDA	1,195		577		291		2,063
2015
Sales:
Third-party sales	$	5,342	$	5,253	$	1,882	$	12,477
Intersegment sales	—		125		—		125
Total sales	$	5,342	$	5,378	$	1,882	$	12,602
Profit and loss:
Depreciation and amortization	$	233	$	203	$	43	$	479
Adjusted EBITDA	1,111		512		271		1,894
2017
Assets:
Capital expenditures	$	308	$	178	$	57	$	543
Goodwill	3,949		193		60		4,202
Total assets	10,252		4,179		1,068		15,499
2016
Assets:
Capital expenditures	$	333	$	293	$	63	$	689
Goodwill	4,579		181		57		4,817
Total assets	10,542		3,891		982		15,415

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The following tables reconcile certain segment information to consolidated totals:

	2017			2016			2015
Sales:
Total segment sales	$	13,060		$	12,512		$	12,602
Elimination of intersegment sales	(148		)	(118		)	(125		)
Corporate	48			—			(64		)
Consolidated sales	$	12,960		$	12,394		$	12,413

	2017			2016			2015
Combined segment adjusted EBITDA	$	2,144		$	2,063		$	1,894
Unallocated amounts:
Depreciation and amortization	(551		)	(535		)	(508		)
Impairment of goodwill	(719		)	—			(25		)
Restructuring and other charges	(165		)	(155		)	(214		)
Impact of LIFO	(110		)	(18		)	101
Metal price lag	72			27			(175		)
Corporate expense	(274		)	(454		)	(371		)
Other	(71		)	(109		)	(74		)
Operating income	326			819			628
Interest expense	(496		)	(499		)	(473		)
Other income, net	640			94			28
Income from continuing operations before income taxes	470			414			183
Provision for income taxes	(544		)	(1,476		)	(339		)
Discontinued operations	—			121			(165		)
Net income attributable to noncontrolling interest	—			—			(1		)
Net loss attributable to Arconic	$	(74	)	$	(941	)	$	(322	)

December 31,	2017			2016
Assets:
Total segment assets	$	15,499		$	15,415
Unallocated amounts:
Cash and cash equivalents	2,150			1,863
Deferred income taxes	743			1,234
Corporate goodwill	333			331
Corporate fixed assets, net	310			308
LIFO reserve	(481		)	(371		)
Fair value of derivative contracts	91			24
Investment in common stock of Alcoa Corporation	—			1,020
Other	73			214
Consolidated assets	$	18,718		$	20,038

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Sales by major product grouping were as follows:

	2017		2016		2015
Sales:
Flat-rolled aluminum	$	4,992	$	4,864	$	5,253
Fastening systems and rings	2,102		2,060		2,168
Investment castings	1,983		1,870		1,812
Other extruded and forged products	1,565		1,495		1,332
Architectural aluminum systems	1,065		1,010		951
Aluminum wheels	805		689		790
Other	448		406		107
	$	12,960	$	12,394	$	12,413

Geographic information for sales was as follows (based upon the country where the point of sale occurred):

	2017		2016		2015
Sales:
United States	$	8,167	$	7,823	$	8,044
France	965		930		802
Hungary	739		619		622
United Kingdom	721		711		698
China	615		582		565
Russia	500		433		455
Germany	309		284		264
Brazil	285		250		297
Canada	261		262		180
Japan	141		145		138
Italy	37		127		139
Other	220		228		209
	$	12,960	$	12,394	$	12,413

Geographic information for long-lived assets was as follows (based upon the physical location of the assets):

December 31,	2017		2016
Long-lived assets:
United States	$	4,005	$	3,966
China	347		336
Russia	276		295
United Kingdom	259		232
Hungary	227		194
France	159		118
Germany	88		64
Canada	63		58
Brazil	62		97
Other	108		139
	$	5,594	$	5,499

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O. Preferred and Common Stock

Preferred Stock. Arconic has two classes of preferred stock: Class A Preferred Stock and Class B Serial Preferred Stock. Class A Preferred Stock has 660,000 shares authorized at a par value of $100 per share with an annual 3.75 cumulative dividend preference per share. There were 546,024 of such shares outstanding at December 31, 2017 and 2016. Class B Serial Preferred Stock has 10,000,000 shares authorized at a par value of $1 per share. There were no shares outstanding at December 31, 2017 and 2,500,000 of such shares outstanding at December 31, 2016 (see below).

In September 2014, Arconic completed a public offering under its shelf registration statement for $1,250 of 25 million depositary shares, each of which represents a 1/10th interest in a share of Arconic’s 5.375% Class B Mandatory Convertible Preferred Stock, Series 1, par value $1 per share, liquidation preference $500 per share (the “Mandatory Convertible Preferred Stock”). The 25 million depositary shares are equivalent to 2.5 million shares of Mandatory Convertible Preferred Stock. Each depositary share entitled the holder, through the depositary, to a proportional fractional interest in the rights and preferences of a share of Mandatory Convertible Preferred Stock, including conversion, dividend, liquidation, and voting rights, subject to terms of the deposit agreement. Arconic received $1,213 in net proceeds from the public offering reflecting an underwriting discount. The net proceeds were used, together with the net proceeds of issued debt, to finance the cash portion of the acquisition of Firth Rixson. The underwriting discount was recorded as a decrease to Additional capital. The Mandatory Convertible Preferred Stock constitutes a series of Arconic’s Class B Serial Preferred Stock, which ranks senior to Arconic’s common stock and junior to Arconic’s Class A Preferred Stock and existing and future indebtedness. Holders of the Mandatory Convertible Preferred Stock generally have no voting rights.

Dividends on the Mandatory Convertible Preferred Stock were cumulative in nature and paid at the rate of $26.8750 per annum per share in 2016 and 2015, which commenced January 1, 2015 (paid on December 30, 2014).

On October 2, 2017, all outstanding 24,975,978 depositary shares were converted at a rate of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this equity transaction. Dividends on the Mandatory Convertible Preferred Stock were paid at the rate of $20.1563 per share in 2017.

Common Stock. Pursuant to the authorization provided at a special meeting of Arconic common shareholders held on October 5, 2016, shareholders approved a 1-for-3 reverse stock split of Arconic’s outstanding and authorized shares of common stock (the “Reverse Stock Split”). As a result of the Reverse Stock Split, every three shares of issued and outstanding common stock were combined into one issued and outstanding share of common stock. The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares. The par value of the common stock remained at $1 per share. Accordingly, Common stock and Additional capital in the accompanying Consolidated Balance Sheet at December 31, 2016 reflected a decrease and increase of $877, respectively. The number of authorized shares of common stock was also decreased from 1.8 billion shares to 0.6 billion shares. The Company’s common stock began trading on a reverse stock split-adjusted basis on the NYSE on October 6, 2016.

In August 2016, Arconic retired its outstanding treasury stock consisting of approximately 25 million shares (76 million shares pre-Reverse Stock Split). As a result, Common stock and Additional capital in the accompanying 2016 Consolidated Balance Sheet were decreased by $76 and $2,563, respectively, to reflect the retirement of the treasury shares. As of December 31, 2017 and 2016, there was no outstanding treasury stock.

At December 31, 2017, 481,416,537 shares were issued and outstanding. Dividends paid in 2017 were $0.24 per annum or $0.06 per quarter and $0.36 per annum or $0.09 per quarter in 2016 and 2015. The current dividend yield as authorized by Arconic’s Board of Directors is $0.24 per annum or $0.06 per quarter.

In July 2015, Arconic issued 29 million shares (87 million shares—pre-Reverse Stock Split) of common stock as consideration paid to acquire RTI (see Note F). Additionally, Arconic assumed the obligation to repay two tranches of convertible debt; one tranche was due and settled in cash on December 1, 2015 (principal amount of $115) and the other tranche is due on October 15, 2019 (principal amount of $403), unless earlier converted or purchased by Arconic at the holder’s option under specific conditions. Upon conversion of the 2019 convertible notes, holders will receive, at Arconic’s election, cash, shares of common stock (approximately 14,294,000 shares using the December 31, 2017 conversion rate of 35.5119 shares per $1,000 (not in millions) bond or per-share conversion price of $28.1596), or a combination of cash and shares. On the maturity date, each holder of outstanding notes will be entitled to receive on such date $1,000 (not in millions) in cash for each $1,000 (not in millions) bond, together with accrued and unpaid interest.

As of December 31, 2017, 47 million shares of common stock were reserved for issuance under Arconic’s stock-based compensation plans. As of December 31, 2017, 43 million shares remain available for issuance. Arconic issues new shares to satisfy the exercise of stock options and the conversion of stock awards.

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Share Activity (number of shares)

	Common stock
	Treasury		Outstanding
Balance at end of 2014	87,150,169		1,216,663,661
Issued for stock-based compensation plans	(6,099,066	)	6,099,066
Acquisition of RTI	—		87,397,414
Balance at end of 2015	81,051,103		1,310,160,141
Issued for stock-based compensation plans	(5,219,660	)	5,302,128
Treasury stock retirement	(75,831,443	)	—
Reverse Stock Split	—		(876,942,489	)
Balance at end of 2016	—		438,519,780
Conversion of convertible notes	—		39,242,706
Issued for stock-based compensation plans	—		3,654,051
Balance at end of 2017	—		481,416,537

Stock-based Compensation

Arconic has a stock-based compensation plan under which stock options and restricted stock unit awards are granted in January each year to eligible employees. Most plan participants can choose whether to receive their award in the form of stock options, restricted stock unit awards, or a combination of both. This choice is made before the grant is issued and is irrevocable. Stock options are granted at the closing market price of Arconic’s common stock on the date of grant and vest over a three-year service period (1/3 each year) with a ten-year contractual term. Restricted stock unit awards typically vest over a three-year service period from the date of grant. Certain of these awards also include performance and market conditions. For the majority of performance stock awards issued in 2017, 2016, and 2015, the final number of shares earned will be based on Arconic’s achievement of sales and profitability targets over the respective three-year performance periods. For awards issued in 2017, the award will be earned at the end of the three-year performance period. For awards issued in 2016 and 2015, one-third of the award will be earned each year based on the performance against the pre-established targets for that year. The performance stock awards earned over the three-year period vest at the end of the third year. Additionally, the 2017 awards will be scaled by a total shareholder return (“TSR”) multiplier, which depends upon relative three-year performance against the TSRs of a group of peer companies.

In 2017, 2016 and 2015, Arconic recognized stock-based compensation expense of $54 ($36 after-tax), $76 ($51 after-tax), and $77 ($51 after-tax), respectively. The expense related to restricted stock unit awards in 2017, 2016 and 2015 was approximately 85%, 80% and 80%, respectively. No stock-based compensation expense was capitalized in any of those years. 2017 stock-based compensation expense was reduced by $13 for certain executive pre-vest cancellations which were recorded in Restructuring and other charges within the Statement of Consolidated Operations. At December 31, 2017, there was $43 (pre-tax) of unrecognized compensation expense related to non-vested stock option grants and non-vested restricted stock unit award grants. This expense is expected to be recognized over a weighted average period of 1.6 years. As part of Arconic’s stock-based compensation plan design, individuals who are retirement-eligible have a six-month requisite service period in the year of grant. As a result, a larger portion of expense will be recognized in the first half of each year for these retirement-eligible employees. Of the total pre-tax compensation expense recognized in 2017, 2016 and 2015, $15, $19, and $15, respectively, pertains to the acceleration of expense related to retirement-eligible employees.

Stock-based compensation expense is based on the grant date fair value of the applicable equity grant. For restricted stock unit awards, the fair value was equivalent to the closing market price of Arconic’s common stock on the date of grant. The grant date fair value of the 2017 performance awards containing a market condition was $21.99 and was valued using a Monte Carlo model. A Monte Carlo simulation uses assumptions of stock price behavior to estimate the probability of satisfying market conditions and the resulting fair value of the award. The risk-free interest rate (1.5%) was based on a yield curve of interest rates at the time of the grant based on the remaining performance period. Because of limited historical information due to the Separation Transaction, volatility (38.0%) was estimated using implied volatility and the representative price return approach, which uses price returns of comparable companies to develop a correlation assumption. For stock options, the fair value was estimated on the date of grant using a lattice-pricing model, which generated a result of $6.26, $4.78, and $10.07 per option in 2017, 2016, and 2015, respectively. The lattice-pricing model uses a number of assumptions to estimate the fair value of a stock option, including a risk-free interest rate, dividend yield, volatility, exercise behavior, and contractual life. The following

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paragraph describes in detail the assumptions used to estimate the fair value of stock options granted in 2017 (the assumptions used to estimate the fair value of stock options granted in 2016 and 2015 were not materially different, except as noted below).

The risk-free interest rate (2.4%) was based on a yield curve of interest rates at the time of the grant based on the contractual life of the option. The dividend yield (1.2%) was based on a one-year average. Volatility (38.1% for 2017, 44.5% for 2016, and 36.5% in 2015) was based on historical volatilities (except 2017 where we used comparable companies) and implied volatilities over the term of the option. Arconic utilized historical option forfeiture data to estimate annual pre- and post-vesting forfeitures (6%). Exercise behavior (59%) was based on a weighted average exercise ratio (exercise patterns for grants issued over the number of years in the contractual option term) of an option’s intrinsic value resulting from historical employee exercise behavior. Based upon the other assumptions used in the determination of the fair value, the life of an option (5.9 years) was an output of the lattice-pricing model. The activity for stock options and stock awards during 2017 was as follows (options and awards in millions):

	Stock options				Stock awards
	Number of options		Weighted average exercise price		Number of awards		Weighted average FMV per award
Outstanding, January 1, 2017	13		$	24.14	8		$	22.26
Granted	2		21.13		3		21.86
Exercised	(2	)	20.65		—		—
Converted	—		—		(2	)	24.95
Expired or forfeited	(2	)	25.99		(2	)	21.26
Performance share adjustment	—		—		—		21.48
Outstanding, December 31, 2017	11		23.94		7		21.49

As of December 31, 2017, the number of stock options outstanding had a weighted average remaining contractual life of 5.3 years and a total intrinsic value of $53. Additionally, 7.4 million of the stock options outstanding were fully vested and exercisable and had a weighted average remaining contractual life of 4.2 years, a weighted average exercise price of $25.90, and a total intrinsic value of $26 as of December 31, 2017. In 2017, 2016 and 2015, the cash received from stock option exercises was $50, $4, and $25 and the total tax benefit realized from these exercises was $4, $0, and $6, respectively. The total intrinsic value of stock options exercised during 2017, 2016 and 2015 was $13, $1, and $19, respectively.

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P. Earnings Per Share

Basic earnings per share (EPS) amounts are computed by dividing earnings (loss), after the deduction of preferred stock dividends declared, by the average number of common shares outstanding. Diluted EPS amounts assume the issuance of common stock for all potentially dilutive share equivalents outstanding.

The number of shares and per share amounts for all periods presented below have been updated to reflect the Reverse Stock Split (see Note O). The information used to compute basic and diluted EPS attributable to Arconic common shareholders was as follows (shares in millions):

	2017			2016			2015
Net loss from continuing operations attributable to Arconic	$	(74	)	$	(1,062	)	$	(156	)
Net income from continuing operations attributable to noncontrolling interests	—			—			(1		)
Less: preferred stock dividends declared	(53		)	(69		)	(69		)
Loss from continuing operations available to Arconic common shareholders	(127		)	(1,131		)	(226		)
Income (loss) from discontinued operations after income taxes and noncontrolling interests(1)	—			121			(165		)
Net loss available to Arconic common shareholders—basic	(127		)	(1,010		)	(391		)
Add: interest expense related to convertible notes	—			—			—
Add: dividends related to mandatory convertible preferred stock	—			—			—
Net loss available to Arconic common shareholders—diluted	$	(127	)	$	(1,010	)	$	(391	)
Average shares outstanding—basic	451			438			420
Effect of dilutive securities:
Stock options	—			—			—
Stock and performance awards	—			—			—
Mandatory convertible preferred stock	—			—			—
Convertible notes	—			—			—
Average shares outstanding—diluted	451			438			420

⁽¹⁾  Calculated from the Statement of Consolidated Operations as Income (loss) from discontinued operations after income taxes less Net income from discontinued operations attributable to noncontrolling interests.

In 2017, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 39 million share equivalents related to the mandatory convertible preferred stock, 14 million (weighted average) share equivalents related to convertible notes (acquired from RTI - see Note O), 11 million stock options, and 7 million stock awards were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2017, 30 million, 14 million, 5 million, and 1 million potential shares of common stock related to the mandatory convertible preferred stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding. The mandatory convertible preferred stock converted on October 2, 2017 (see Note O).

In 2016, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 39 million share equivalents related to the mandatory convertible preferred stock, 14 million share equivalents related to convertible notes, 13 million stock options, and 8 million stock awards were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2016, 28 million, 10 million, 4 million, and 1 million potential shares of common stock related to the mandatory convertible preferred stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding.

In 2015, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 26 million share equivalents related to mandatory convertible preferred stock, 7 million stock awards, 11 million stock options, and 5 million share equivalents related to convertible notes were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2015, 26 million, 5 million, 4 million, and 1 million potential shares of common stock related to the mandatory convertible preferred

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stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding.

Options to purchase 3 million, 10 million, and 9 million shares of common stock at a weighted average exercise price of $33.32, $26.93, and $38.25 per share were outstanding as of December 31, 2017, 2016, and 2015, respectively, but were not included in the computation of diluted EPS because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of Arconic’s common stock.

Q. Income Taxes

The components of income from continuing operations before income taxes were as follows:

	2017			2016		2015
United States	$	500		$	84	$	124
Foreign	(30		)	330		59
	$	470		$	414	$	183

The provision for income taxes consisted of the following:

	2017			2016			2015
Current:
Federal*	$	—		$	—		$	—
Foreign	98			133			115
State and local	(2		)	1			(1		)
	96			134			114
Deferred:
Federal*	489			1,208			196
Foreign	37			136			29
State and local	(78		)	(2		)	—
	448			1,342			225
Total	$	544		$	1,476		$	339

*    Includes U.S. taxes related to foreign income

The exercise of employee stock options generated a tax charge of $1 in 2017 and a benefit of $0 and $2 in 2016 and 2015, respectively, representing only the difference between compensation expense recognized for financial reporting and tax purposes. The tax effects related to the exercise of employee stock options in 2017 were recorded to the income statement within the provision for income taxes. Tax effects related to 2016 and 2015 were recorded to equity. Payments either decreased current taxes payable or increased deferred tax assets (net operating losses) in the respective periods.

Arconic has unamortized tax-deductible goodwill of $24 resulting from intercompany stock sales and reorganizations. Arconic recognizes the tax benefits (at a 25% rate) associated with this tax-deductible goodwill as it is being amortized for local income tax purposes rather than in the period in which the transaction is consummated.

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A reconciliation of the U.S. federal statutory rate to Arconic’s effective tax rate was as follows (the effective tax rate for all periods was a provision on income):

	2017		2016		2015
U.S. federal statutory rate	35.0	%	35.0	%	35.0	%
Taxes on foreign operations	(7.5	)	(10.2	)	2.5
Federal benefit of state tax	3.1		0.4		0.3
Permanent differences on restructuring and other charges and asset disposals(1)	(167.4	)	(107.8	)	3.6
Non-deductible acquisition costs	0.3		8.4		7.1
Statutory tax rate and law changes(2)	52.5		(15.7	)	(1.0	)
Tax holidays	(3.0	)	(0.8	)	(3.9	)
Tax credits	(0.7	)	(1.2	)	(2.8	)
Changes in valuation allowances	137.9		426.8		145.8
Impairment of goodwill	53.5		—		4.8
Company-owned life insurance/split-dollar net premiums	—		23.0		(3.0	)
Changes in uncertain tax positions	10.1		2.1		(2.2	)
Other	1.9		(3.5	)	(1.0	)
Effective tax rate	115.7	%	356.5	%	185.2	%

⁽¹⁾  Additional losses were reported in Spain's 2017 tax return related to the Separation Transaction which are offset by an increased valuation allowance.

⁽²⁾  On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 ("the 2017 Act”) resulting in significant changes to the Internal Revenue Code (see below). In December 2016, Spain and the United States enacted tax law changes which resulted in the remeasurement of certain deferred tax liabilities recorded by Arconic.

On December 22, 2017, the 2017 Act was signed into law, making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the non-previously taxed post-1986 foreign earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017. Also on December 22, 2017, Staff Accounting Bulletin No. 118 ("SAB 118"), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, was issued by the Securities and Exchange Commission to address the application of U.S. GAAP for financial reporting. SAB 118 permits the use of provisional amounts based on reasonable estimates in the financial statements. SAB 118 also provides that the tax impact may be considered incomplete in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the 2017 Act. Any adjustments to provisional or incomplete amounts should be included in income from continuing operations as an adjustment to tax expense or benefit in the reporting period that the amounts are determined within one year.

As of February 2, 2018, the Company has calculated a reasonable estimate of the impact of the 2017 Act’s tax rate reduction and one-time transition tax in its year end income tax provision in accordance with its understanding of the 2017 Act and guidance available and, as a result, has recorded a $272 tax charge in the fourth quarter of 2017, the period in which the legislation was enacted. We anticipate finalizing our accounting during 2018 in accordance with SAB 118.

U.S. deferred tax assets and liabilities as of the date of enactment of the 2017 Act are based on estimated temporary differences which will be updated and finalized with the filing of the 2017 U.S. income tax return. Changes to the estimated temporary differences will result in changes to the revaluation of the deferred tax assets and liabilities. As such, the impact of the 2017 Act’s tax rate reduction is a provisional amount under SAB 118 which will be updated during 2018.

The impact of the one-time transition tax on the deemed repatriation of non-previously taxed post-1986 foreign earnings and profits of certain U.S.-owned foreign corporations, net of foreign tax credits, is also considered a provisional amount. The Company will continue to analyze the amount of foreign earnings and profits, the associated foreign tax credits, and additional guidance that may be issued during 2018 and will update the estimated deemed repatriation calculation as necessary under SAB 118. The Company has not yet gathered, prepared and analyzed all the necessary information in sufficient detail to determine whether any excess foreign tax credits that may result from the deemed repatriation will be realizable. The need for additional

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valuation allowance on foreign tax credits that may not be more likely than not to be realized in the future will be reassessed during 2018.

The components of net deferred tax assets and liabilities were as follows:

	2017					2016
December 31,	Deferred tax assets			Deferred tax liabilities		Deferred tax assets			Deferred tax liabilities
Depreciation	$	31		$	693	$	15		$	817
Employee benefits	936			23		1,382			8
Loss provisions	134			14		181			1
Deferred income/expense	19			1,144		20			74
Tax loss carryforwards	3,305			—		1,540			—
Tax credit carryforwards	638			—		652			—
Other	24			33		164			19
	5,087			1,907		3,954			919
Valuation allowance	(2,584		)	—		(1,940		)	—
	$	2,503		$	1,907	$	2,014		$	919

The following table details the expiration periods of the deferred tax assets presented above:

December 31, 2017	Expires within 10 years			Expires within 11-20 years			No expiration*			Other*			Total
Tax loss carryforwards	$	81		$	781		$	2,443		$	—		$	3,305
Tax credit carryforwards	531			97			10			—			638
Other	—			—			84			1,060			1,144
Valuation allowance	(467		)	(646		)	(1,376		)	(95		)	(2,584		)
	$	145		$	232		$	1,161		$	965		$	2,503

* Deferred tax assets with no expiration may still have annual limitations on utilization. Other represents deferred tax assets whose expiration is dependent upon the reversal of the underlying temporary difference. A substantial amount of Other relates to employee benefits that will become deductible for tax purposes over an extended period of time as contributions are made to employee benefit plans and payments are made to retirees.

The total deferred tax asset (net of valuation allowance) is supported by projections of future taxable income exclusive of reversing temporary differences (30%) and taxable temporary differences that reverse within the carryforward period (70%).

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not (greater than 50%) that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

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In 2017, Arconic released $98 of certain U.S. state valuation allowances. After weighing all available positive and negative evidence, management determined that the underlying net deferred tax assets were more likely than not realizable based on projected taxable income estimates taking into account expected post-separation apportionment data. Valuation allowances of $750 remain against other net state deferred tax assets expected to expire before utilization. The need for valuation allowances against net state deferred tax assets will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

Arconic also recorded an additional valuation allowance of $675 which offsets additional losses reported on the Spanish tax return filed in 2017 related to the Separation Transaction that are not more likely than not to be realized.  There is no net impact to the provision for income taxes, as the additional valuation allowance fully offsets the current year tax benefit in Spain. 

Arconic’s foreign tax credits in the United States have a 10-year carryforward period with expirations ranging from 2018 to 2027 (as of December 31, 2017). Valuation allowances were initially established in prior years on a portion of the foreign tax credit carryforwards, primarily due to insufficient foreign source income to allow for full utilization of the credits within the expiration period. After consideration of all available evidence including potential tax planning strategies and earnings of foreign subsidiaries projected to be distributable as taxable foreign dividends, incremental valuation allowances of $302 and $134 were recognized in 2016 and 2015, respectively. Foreign tax credits of $57, $128, and $15 expired at the end of 2017, 2016, and 2015, respectively, resulting in a corresponding decrease to the valuation allowance. During 2017, an additional valuation allowance of $23 was recorded for current year excess foreign tax credits, offset by a net $14 reduction for other adjustments. At December 31, 2017, the cumulative amount of the valuation allowance was $379. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances, including the impact of the 2017 Act.

Arconic will continue its analysis of the 2017 Act, including any additional guidance that may be issued. Further analysis could result in changes to assumptions related to the realizability of certain deferred tax assets including, but not limited to, foreign tax credits, alternative minimum tax credits, and state tax loss carryforwards. Provisional estimates of the impact of the 2017 Act on the realizability of certain deferred tax assets have been made based on information and computations that were available, prepared, and analyzed as of February 2, 2018. In accordance with SAB 118, Arconic will reassess the need for valuation allowances on these deferred tax assets as necessary during 2018.

In 2016, Arconic recognized a $1,267 discrete income tax charge for valuation allowances related to the Separation Transaction, including $925 with respect to Alcoa Corporation’s net deferred tax assets in the United States, $302 with respect to Arconic’s foreign tax credits in the United States, $42 with respect to certain deferred tax assets in Luxembourg, and $(2) related to the net impact of other smaller items. After weighing all positive and negative evidence, as described above, management determined that the net deferred tax assets of Alcoa Corporation were not more likely than not to be realized due to lack of historical and projected domestic source taxable income. As such, a valuation allowance was recorded immediately prior to separation.

In addition, Arconic recognized a $42 discrete income tax charge in 2016 for a valuation allowance on the full value of certain net deferred tax assets in Luxembourg. Sources of taxable income which previously supported the net deferred tax asset are no longer available as a result of the Separation Transaction. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

In 2016, Arconic also recognized discrete income tax benefits related to the release of valuation allowances on certain net deferred tax assets in Russia and Canada of $19 and $20, respectively. After weighing all available evidence, management determined that it was more likely than not that the net income tax benefits associated with the underlying deferred tax assets would be realizable based on historic cumulative income and projected taxable income.

Arconic also recorded additional valuation allowances in Australia of $93 related to the Separation Transaction, in Spain of $163 related to a tax law change and in Luxembourg of $280 related to the Separation Transaction as well as a tax law change. These valuation allowances fully offset current year changes in deferred tax asset balances of each respective jurisdiction, resulting in no net impact to tax expense. The need for a valuation allowance will be reassessed on a continuous basis in future periods by each jurisdiction and, as a result, the allowances may increase or decrease based on changes in facts and circumstances.

In 2015, Arconic recognized an additional $141 discrete income tax charge for valuation allowances on certain deferred tax assets in Iceland and Suriname. Of this amount, an $85 valuation allowance was established on the full value of the deferred tax assets in Suriname, which were related mostly to employee benefits and tax loss carryforwards. These deferred tax assets have an expiration period ranging from 2016 to 2022 (as of December 31, 2015). The remaining $56 charge relates to a valuation

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allowance established on a portion of the deferred tax assets recorded in Iceland. These deferred tax assets have an expiration period ranging from 2017 to 2023. After weighing all available positive and negative evidence, as described above, management determined that it was no longer more likely than not that Arconic will realize the tax benefit of either of these deferred tax assets. This was mainly driven by a decline in the outlook of the Primary Metals business, combined with prior year cumulative losses and a short expiration period.

The following table details the changes in the valuation allowance:

December 31,	2017			2016			2015
Balance at beginning of year	$	1,940		$	1,291		$	1,151
Increase to allowance	831			772			180
Release of allowance	(246		)	(209		)	(42		)
Acquisitions and divestitures (F)	(1		)	(1		)	29
Tax apportionment, tax rate and tax law changes	(24		)	106			(15		)
Foreign currency translation	84			(19		)	(12		)
Balance at end of year	$	2,584		$	1,940		$	1,291

As a result of the 2017 Act, the non-previously taxed post-1986 foreign earnings and profits (calculated based on U.S. tax principles) of certain U.S.-owned foreign corporations has been subject to U.S. tax under the one-time transition tax provisions. The cumulative amount of Arconic’s foreign undistributed U.S. GAAP earnings is estimated to be less than the total foreign earnings and profits already subject to U.S. tax as of December 31, 2017. As such, Arconic expects to be able to repatriate these earnings back to the United States without additional income tax consequences other than foreign withholding taxes which will not have a material impact. At this time, management has no plans to distribute such earnings in the foreseeable future. The Company will continue to evaluate whether to repatriate all or a portion of the cumulative undistributed foreign earnings in light of the 2017 Act and consider that conclusion to be incomplete under SAB 118.

The 2017 Act creates a new requirement that certain income earned by foreign subsidiaries, Global Intangible Low Taxed Income (GILTI), must be included in the gross income of the U.S. shareholder. The 2017 Act also established the Base Erosion and Anti-Abuse Tax (BEAT). The Company is continuing to evaluate the impact of these provisions and has not yet completed a reasonable estimate where we do not have the necessary information available, prepared, and/or analyzed (including computations) as it relates to the impact of the GILTI and BEAT provisions. In addition, Arconic is permitted to make an accounting policy election to either treat taxes due on future inclusions in U.S. taxable income related to GILTI as a current period expense when incurred or factor such amounts into the Company’s deferred tax calculation. Arconic has not yet made this policy decision and will update the GILTI and BEAT impact in accordance with SAB 118.

Arconic and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. With a few minor exceptions, Arconic is no longer subject to income tax examinations by tax authorities for years prior to 2006. All U.S. tax years prior to 2017 have been audited by the Internal Revenue Service. Various state and foreign jurisdiction tax authorities are in the process of examining Arconic’s income tax returns for various tax years through 2016.

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A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalties) was as follows:

December 31,	2017			2016			2015
Balance at beginning of year	$	28		$	18		$	7
Additions for tax positions of the current year	23			12			—
Additions for tax positions of prior years	27			—			14
Reductions for tax positions of prior years	—			—			(2		)
Settlements with tax authorities	—			(1		)	—
Expiration of the statute of limitations	(5		)	(1		)	(1		)
Foreign currency translation	—			—			—
Balance at end of year	$	73		$	28		$	18

For all periods presented, a portion of the balance at end of year pertains to state tax liabilities, which are presented before any offset for federal tax benefits. The effect of unrecognized tax benefits, if recorded, that would impact the annual effective tax rate for 2017, 2016 and 2015 would be approximately 15%, 6%, and 7%, respectively, of pre-tax book income. Arconic does not anticipate that changes in its unrecognized tax benefits will have a material impact on the Statement of Consolidated Operations during 2018 (see Tax in Note K for a matter for which no reserve has been recognized).

It is Arconic’s policy to recognize interest and penalties related to income taxes as a component of the Provision for income taxes on the accompanying Statement of Consolidated Operations. In 2017, Arconic recognized interest of $1 but did not recognize any interest or penalties in 2016 or 2015. Due to the expiration of the statute of limitations, settlements with tax authorities, and refunded overpayments, Arconic recognized interest income of $2 and $1 in 2017 and 2015, respectively, but did not recognize any interest income in 2016. As of December 31, 2017 and 2016, the amount accrued for the payment of interest and penalties was $2 and $2, respectively.

R. Receivables

Sale of Receivables Programs

Arconic has an arrangement with three financial institutions to sell certain customer receivables without recourse on a revolving basis. The sale of such receivables is completed through the use of a bankruptcy remote special purpose entity, which is a consolidated subsidiary of Arconic. This arrangement provides for minimum funding of $200 up to a maximum of $400 for receivables sold. On March 30, 2012, Arconic initially sold $304 of customer receivables in exchange for $50 in cash and $254 of deferred purchase program under this arrangement. Arconic has received additional net cash funding of $300 for receivables sold ($2,358 in draws and $2,058 in repayments) since the program’s inception, including $0 ($600 in draws and $600 in repayments) in 2017 and $100 ($500 in draws and $400 in repayments) in 2016.

As of December 31, 2017 and 2016, the deferred purchase program receivable was $187 and $83, respectively, which was included in Other receivables on the accompanying Consolidated Balance Sheet. The deferred purchase program receivable is reduced as collections of the underlying receivables occur; however, as this is a revolving program, the sale of new receivables will result in an increase in the deferred purchase program receivable. The net change in the deferred purchase program receivable was reflected in the (Increase) decrease in receivables line item on the accompanying Statement of Consolidated Cash Flows. This activity is reflected as an operating cash flow because the related customer receivables are the result of an operating activity with an insignificant, short-term interest rate risk. See Note A for additional information on new accounting guidance that will affect the Company during 2018.

In 2017 and 2016, the gross cash outflows and inflows associated with the deferred purchase program receivable were $5,471 and $5,367, respectively, and $5,340 and $5,406, respectively. The gross amount of receivables sold and total cash collected under this program since its inception was $35,409 and $34,872 respectively. Arconic services the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded.

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Allowance for Doubtful Accounts

The following table details the changes in the allowance for doubtful accounts related to customer receivables and other receivables:

	Customer receivables									Other receivables
December 31,	2017			2016			2015			2017			2016			2015
Balance at beginning of year	$	13		$	8		$	6		$	32		$	34		$	24
Provision for doubtful accounts	1			7			4			9			6			8
Write off of uncollectible accounts	(5		)	(3		)	(2		)	(1		)	(1		)	2
Recoveries of prior write-offs	—			(1		)	—			(3		)	1			(1		)
Other	(1		)	2			—			(3		)	(8		)	1
Balance at end of year	$	8		$	13		$	8		$	34		$	32		$	34

S. Interest Cost Components

	2017		2016		2015
Amount charged to expense	$	496	$	499	$	473
Amount capitalized	22		32		27
	$	518	$	531	$	500

T. Pension and Other Postretirement Benefits

Arconic maintains pension plans covering most U.S. employees and certain employees in foreign locations. Pension benefits generally depend on length of service, job grade, and remuneration. Substantially all benefits are paid through pension trusts that are sufficiently funded to ensure that all plans can pay benefits to retirees as they become due. Most salaried and non-bargaining hourly U.S. employees hired after March 1, 2006 participate in a defined contribution plan instead of a defined benefit plan.

Arconic also maintains health care and life insurance postretirement benefit plans covering eligible U.S. retired employees and certain retirees from foreign locations. Generally, the medical plans are unfunded and pay a percentage of medical expenses, reduced by deductibles and other coverage. Life benefits are generally provided by insurance contracts. Arconic retains the right, subject to existing agreements, to change or eliminate these benefits. All salaried and certain non-bargaining hourly U.S. employees hired after January 1, 2002 and certain bargaining hourly U.S. employees hired after July 1, 2010 are not eligible for postretirement health care benefits. All salaried and certain hourly U.S. employees that retire on or after April 1, 2008 are not eligible for postretirement life insurance benefits.

Effective January 1, 2015, Arconic no longer offers postretirement health care benefits to Medicare-eligible, primarily non-bargaining, U.S. retirees through Company-sponsored plans. Qualifying retirees (hired prior to January 1, 2002), both current and future, may access these benefits in the marketplace by purchasing coverage directly from insurance carriers. 

Effective August 1, 2016, in preparation for the Separation Transaction, certain U.S. pension and postretirement benefit plans were separated, requiring a remeasurement as of that date. Additionally, one pension plan was required to be remeasured as a result of settlement accounting. Together, these remeasurements resulted in an increase of $845 to Arconic’s pension liability and an increase of $551 (net of tax) to the plans’ unrecognized net actuarial loss (included in Accumulated other comprehensive loss).

Effective April 1, 2018, benefit accruals for future service and compensation under all of the Company’s qualified and non-qualified defined benefit pension plans for U.S. salaried and non-bargained hourly employees (the “Pension Plans”) will cease. In connection with this change, effective April 1, 2018, impacted employees will commence receiving an employer contribution of 3% of eligible compensation under the applicable Arconic Retirement Savings Plans, and, for the period from April 1, 2018 through December 31, 2018, an additional transition employer contribution of 3% of eligible compensation.

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The funded status of all of Arconic’s pension and other postretirement benefit plans are measured as of December 31 each calendar year.

Obligations and Funded Status

	Pension benefits						Other postretirement benefits
December 31,	2017			2016			2017			2016
Change in benefit obligation
Benefit obligation at beginning of year	$	7,026		$	14,247		$	980		$	2,319
Service cost	90			165			7			13
Interest cost	234			435			30			63
Amendments	1			2			—			—
Actuarial (gains) losses	311			770			1			112
Transfer to Alcoa Corporation	—			(7,577		)	—			(1,340		)
Settlements	—			(82		)	—			—
Benefits paid, net of participants’ contributions	(425		)	(794		)	(98		)	(197		)
Medicare Part D subsidy receipts	—			—			7			9
Foreign currency translation impact	122			(140		)	—			1
Benefit obligation at end of year(1)	$	7,359		$	7,026		$	927		$	980
Change in plan assets(1)
Fair value of plan assets at beginning of year	$	4,666		$	10,928		$	—		$	—
Actual return on plan assets	212			89			—			—
Employer contributions	310			296			—			—
Participants’ contributions	—			16			—			—
Benefits paid	(404		)	(762		)	—			—
Administrative expenses	(33		)	(65		)	—			—
Transfer to Alcoa Corporation	—			(5,610		)	—			—
Settlements	—			(82		)	—			—
Foreign currency translation impact	111			(144		)	—			—
Fair value of plan assets at end of year(1)	$	4,862		$	4,666		$	—		$	—
Funded status*	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Less: Amounts attributed to joint venture partners	—			—			—			—
Net funded status	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in the Consolidated Balance Sheet consist of:
Noncurrent assets	$	89		$	6		$	—		$	—
Current liabilities	(22		)	(21		)	(86		)	(91		)
Noncurrent liabilities	(2,564		)	(2,345		)	(841		)	(889		)
Net amount recognized	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Net actuarial loss	$	3,240		$	2,979		$	146		$	150
Prior service cost (benefit)	10			15			(37		)	(45		)
Total, before tax effect	3,250			2,994			109			105
Less: Amounts attributed to joint venture partners	—			—			—			—
Net amount recognized, before tax effect	$	3,250		$	2,994		$	109		$	105
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss consist of:
Net actuarial loss (gain)	$	481		$	(1,992	)	$	1		$	(224	)
Amortization of accumulated net actuarial loss	(220		)	(380		)	(5		)	(24		)
Prior service (benefit) cost	—			(42		)	—			37
Amortization of prior service (cost) benefit	(5		)	(13		)	8			24
Total, before tax effect	256			(2,427		)	4			(187		)
Less: Amounts attributed to joint venture partners	—			38			—			—
Net amount recognized, before tax effect	$	256		$	(2,389	)	$	4		$	(187	)

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⁽¹⁾  At December 31, 2017, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $6,018, $3,544, and $(2,474), respectively. At December 31, 2016, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $5,707, $3,495, and $(2,212), respectively.

Pension Plan Benefit Obligations

	Pension benefits
	2017		2016
The projected benefit obligation and accumulated benefit obligation for all defined benefit pension plans was as follows:
Projected benefit obligation	$	7,359	$	7,026
Accumulated benefit obligation	7,169		6,850
The aggregate projected benefit obligation and fair value of plan assets for pension plans with projected benefit obligations in excess of plan assets was as follows:
Projected benefit obligation	6,600		6,995
Fair value of plan assets	4,016		4,629
The aggregate accumulated benefit obligation and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets was as follows:
Accumulated benefit obligation	6,422		6,104
Fair value of plan assets	3,998		3,894

Components of Net Periodic Benefit Cost

	Pension benefits(1)									Other postretirement benefits(2)
	2017			2016			2015			2017			2016			2015
Service cost	$	90		$	155		$	175		$	7		$	13		$	14
Interest cost	234			431			577			30			63			92
Expected return on plan assets	(332		)	(677		)	(753		)	—			—			—
Recognized net actuarial loss	220			380			468			5			24			17
Amortization of prior service cost (benefit)	5			13			16			(8		)	(24		)	(37		)
Settlements(3)	—			19			16			—			—			—
Curtailments(4)	—			—			9			—			—			(4		)
Special termination benefits(5)	—			2			16			—			—			—
Net periodic benefit cost(6)	$	217		$	323		$	524		$	34		$	76		$	82
Discontinued operations	—			122			248			—			41			43
Net amount recognized in Statement of Consolidated Operations	$	217		$	201		$	276		$	34		$	35		$	39

Note: the footnotes below include components of Net Periodic Benefit Cost related to Alcoa Corporation through the completion of the Separation Transaction.

⁽¹⁾  In 2017, 2016 and 2015, net periodic benefit cost for U.S. pension plans was $206, $261, and $423, respectively.

⁽²⁾  In 2017, 2016 and 2015, net periodic benefit cost for other postretirement benefits reflects a reduction of $11, $22, and $34, respectively, related to the recognition of the federal subsidy awarded under Medicare Part D.

⁽³⁾  In 2016, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts. In 2015, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts.

⁽⁴⁾  In 2015, curtailments were due to elimination of benefits or workforce reductions (see Note D).

⁽⁵⁾  In 2016 and 2015, special termination benefits were due to workforce reductions (see Note D).

⁽⁶⁾  Amounts attributed to joint venture partners are not included.

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Amounts Expected to be Recognized in Net Periodic Benefit Cost

	Pension benefits	Other postretirement benefits
	2018	2018
Net actuarial loss recognition	168	9
Prior service cost (benefit) recognition	3	(8	)

Assumptions

Weighted average assumptions used to determine benefit obligations for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

December 31,	2017		2016
Discount rate	3.75	%	4.20	%
Rate of compensation increase	3.50		3.50

The discount rate is determined using a Company-specific yield curve model (above-median) developed with the assistance of an external actuary. The cash flows of the plans’ projected benefit obligations are discounted using a single equivalent rate derived from yields on high quality corporate bonds, which represent a broad diversification of issuers in various sectors, including finance and banking, industrials, transportation, and utilities, among others. The yield curve model parallels the plans’ projected cash flows, which have an average duration of 11 years. The underlying cash flows of the bonds included in the model exceed the cash flows needed to satisfy the Company’s plans’ obligations multiple times.

The rate of compensation increase is based upon actual experience. For 2018, the rate of compensation increase will be 3.5%, which approximates the five-year average.

Weighted average assumptions used to determine net periodic benefit cost for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Discount rate to calculate service cost*	4.20	%	4.29	%	4.00	%
Discount rate to calculate interest cost*	3.60		3.15		4.00
Expected long-term rate of return on plan assets	7.75		7.75		7.75
Rate of compensation increase	3.50		3.50		3.50

* In all periods presented, the respective discount rates were used to determine net periodic benefit cost for most U.S. pension plans for the full annual period. However, the discount rates for a limited number of plans were updated during 2017, 2016, and 2015 to reflect the remeasurement of these plans due to new union labor agreements, settlements, and/or curtailments. The updated discount rates used were not significantly different from the discount rates presented.

In conjunction with the annual measurement of the funded status of Arconic’s pension and other postretirement benefit plans at December 31, 2015, management elected to change the manner in which the interest cost component of net periodic benefit costs is determined in 2016 and beyond. Previously, the interest component was determined by multiplying the single equivalent rate and the aggregate discounted cash flows of the plans’ projected benefit obligations. Under the new methodology, the interest cost component is determined by aggregating the product of the discounted cash flows of the plans’ projected benefit obligations for each year and an individual spot rate (referred to as the “spot rate” approach). This change resulted in a lower interest cost component of net periodic benefit cost under the new methodology compared to the previous methodology in 2017 and 2016 of $34 and $84, respectively, for pension plans and $6 and $14, respectively, for other postretirement benefit plans. Management believes this new methodology, which represents a change in an accounting estimate, is a better measure of the interest cost as each year’s cash flows are specifically linked to the interest rates of bond payments in the same respective year.

The expected long-term rate of return on plan assets is generally applied to a five-year market-related value of plan assets (a fair value at the plan measurement date is used for certain non-U.S. plans). The process used by management to develop this

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assumption is one that relies on a combination of historical asset return information and forward-looking returns by asset class. As it relates to historical asset return information, management focuses on various historical moving averages when developing this assumption. While consideration is given to recent performance and historical returns, the assumption represents a long-term, prospective return. Management also incorporates expected future returns on current and planned asset allocations using information from various external investment managers and consultants, as well as management’s own judgment.

For 2017, 2016 and 2015, the expected long-term rate of return used by management was based on the prevailing and planned strategic asset allocations, as well as estimates of future returns by asset class. These rates fell within the respective range of the 20-year moving average of actual performance and the expected future return developed by asset class. In 2015, the decrease of 25 basis points in the expected long-term rate of return was due to a decrease in the 20-year moving average of actual performance. For 2018, management anticipates that 7.00% will be the expected long-term rate of return. The decrease of 75 basis points in the expected long-term rate is due to a decrease in the expected return by asset class and the 20-year moving average.

Assumed health care cost trend rates for U.S. other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Health care cost trend rate assumed for next year	5.50	%	5.50	%	5.50	%
Rate to which the cost trend rate gradually declines	4.50	%	4.50	%	4.50	%
Year that the rate reaches the rate at which it is assumed to remain	2021		2020		2019

The assumed health care cost trend rate is used to measure the expected cost of gross eligible charges covered by Arconic’s other postretirement benefit plans. For 2018, a 5.5% trend rate will be used, reflecting management’s best estimate of the change in future health care costs covered by the plans. The plans’ actual annual health care cost trend experience over the past three years has ranged from (2.2%) to 9.0%. Management does not believe this three-year range is indicative of expected increases for future health care costs over the long-term.

Assumed health care cost trend rates have an effect on the amounts reported for the health care plan. A one-percentage point change in these assumed rates would have the following effects:

	1% increase		1% decrease
Effect on other postretirement benefit obligations	$	29	$	(28	)
Effect on total of service and interest cost components	1		(1		)

Plan Assets

Arconic’s pension plans’ investment policy and weighted average asset allocations at December 31, 2017 and 2016, by asset class, were as follows:

		Plan assets at December 31,
Asset class	Policy range	2017		2016
Equities	20–55%	28	%	30	%
Fixed income	25–55%	47		42
Other investments	15–35%	25		28
Total		100	%	100	%

The principal objectives underlying the investment of the pension plans’ assets are to ensure that Arconic can properly fund benefit obligations as they become due under a broad range of potential economic and financial scenarios, maximize the long-term investment return with an acceptable level of risk based on such obligations, and broadly diversify investments across and within various asset classes to protect asset values against adverse movements. Specific objectives for long-term investment strategy include reducing the volatility of pension assets relative to pension liabilities and achieving diversification across the balance of the asset portfolio. The use of derivative instruments is permitted where appropriate and necessary for achieving

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overall investment policy objectives. The investment strategy has used long duration cash bonds and derivative instruments to offset a portion of the interest rate sensitivity of U.S. pension liabilities. Exposure to broad equity risk has been decreased and diversified through investments in discretionary and systematic macro hedge funds, long/short equity hedge funds, high yield bonds, emerging market debt and global and emerging market equities. Investments are further diversified by strategy, asset class, geography, and sector to enhance returns and mitigate downside risk. A large number of external investment managers are used to gain broad exposure to the financial markets and to mitigate manager-concentration risk.

Investment practices comply with the requirements of the Employee Retirement Income Security Act of 1974 (ERISA) and other applicable laws and regulations.

The following section describes the valuation methodologies used by the trustees to measure the fair value of pension plan assets, including an indication of the level in the fair value hierarchy in which each type of asset is generally classified (see Note U for the definition of fair value and a description of the fair value hierarchy).

Equities. These securities consist of: (i) direct investments in the stock of publicly traded U.S. and non-U.S. companies and are valued based on the closing price reported in an active market on which the individual securities are traded (generally classified in Level 1); (ii) the plans’ share of commingled funds that are invested in the stock of publicly traded companies and are valued at the net asset value of shares held at December 31 (included in Level 1); and (iii) direct investments in long/short equity hedge funds and private equity (limited partnerships and venture capital partnerships) and are valued by investment managers based on the most recent financial information available, which typically represents significant unobservable data.

Fixed income. These securities consist of: (i) U.S. government debt and are generally valued using quoted prices (included in Level 1); (ii) publicly traded U.S. and non-U.S. fixed interest obligations (principally corporate and sovereign bonds and debentures) and are valued through consultation and evaluation with brokers in the institutional market using quoted prices and other observable market data (included in Level 2); (iii) cash and cash equivalents; and (iv) interest rate swaps and are generally valued using industry standard models with market-based observable inputs.

Other investments. These investments include, among others: (i) exchange traded funds, such as gold, and real estate investment trusts and are valued based on the closing price reported in an active market on which the investments are traded (included in Level 1) and (ii) direct investments of discretionary and systematic macro hedge funds and private real estate (includes limited partnerships) and are valued by investment managers based on the most recent financial information available, which typically represents significant unobservable data.

The fair value methods described above may not be indicative of net realizable value or reflective of future fair values. Additionally, while Arconic believes the valuation methods used by the plans’ trustees are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

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The following table presents the fair value of pension plan assets classified under the appropriate level of the fair value hierarchy or net asset cost:

December 31, 2017	Level 1		Level 2		Net asset value		Total
Equities:
Equity securities	$	379	$	—	$	593	$	972
Long/short equity hedge funds	—		—		230		230
Private equity	—		—		155		155
	$	379	$	—	$	978	$	1,357
Fixed income:
Intermediate and long duration government/credit	$	201	$	981	$	779	$	1,961
Other	164		8		145		317
	$	365	$	989	$	924	$	2,278
Other investments:
Real estate	$	85	$	—	$	172	$	257
Discretionary and systematic macro hedge funds	—		—		583		583
Other	77		7		275		359
	$	162	$	7	$	1,030	$	1,199
Net plan assets*	$	906	$	996	$	2,932	$	4,834

December 31, 2016	Level 1		Level 2		Net Asset Value		Total
Equities
Equity securities	$	393	$	—	$	431	$	824
Long/short equity hedge funds	—		—		406		406
Private equity	—		—		165		165
	$	393	$	—	$	1,002	$	1,395
Fixed income:
Intermediate and long duration government/credit	$	23	$	95	$	655	$	773
Other	1,060		51		74		1,185
	$	1,083	$	146	$	729	$	1,958
Other investments:
Real estate	$	81	$	—	$	185	$	266
Discretionary and systematic macro hedge funds	—		—		784		784
Other	65		—		178		243
	$	146	$	—	$	1,147	$	1,293
Net plan assets**	$	1,622	$	146	$	2,878	$	4,646

* As of December 31, 2017, the total fair value of pension plans’ assets excludes a net receivable of $28, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold but not yet settled plus interest and dividends earned on various investments.

** As of December 31, 2016, the total fair value of pension plans’ assets excludes a net receivable of $20, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold not yet settled plus interest and dividends earned on various investments.

Funding and Cash Flows

It is Arconic’s policy to fund amounts for pension plans sufficient to meet the minimum requirements set forth in applicable country benefits laws and tax laws. Periodically, Arconic contributes additional amounts as deemed appropriate. In 2017 and 2016, cash contributions to Arconic’s pension plans were $310 and $290. The minimum required contribution to pension plans in 2018 is estimated to be $350, of which $320 is for U.S. plans.

During the third quarter of 2016, the Pension Benefit Guaranty Corporation approved management’s plan to separate the former Alcoa Inc. pension plans between Arconic and Alcoa Corporation in connection with the Separation Transaction. The plan stipulates that Arconic will make cash contributions totaling $150 over a period of 30 months to its two largest pension plans. The payments are expected to be made in increments no less than $50 each over the 30-month period, with the first

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payment due no later than six months after the separation date of November 1, 2016. The first payment of $50 was made on April 18, 2017.

Benefit payments expected to be paid to pension and other postretirement benefit plans’ participants and expected Medicare Part D subsidy receipts are as follows utilizing the current assumptions outlined above:

Year ended December 31,	Pension benefits paid		Gross Other post- retirement benefits		Medicare Part D subsidy receipts		Net Other post- retirement benefits
2018	$	435	$	90	$	5	$	85
2019	440		90		5		85
2020	440		90		5		85
2021	445		90		5		85
2022	450		90		5		85
Thereafter	2,265		335		25		310
	$	4,475	$	785	$	50	$	735

Defined Contribution Plans

Arconic sponsors savings and investment plans in various countries, primarily in the United States. Expenses related to these plans were $89 in 2017, $71 in 2016, and $83 in 2015. In the United States, employees may contribute a portion of their compensation to the plans, and Arconic matches a portion of these contributions in equivalent form of the investments elected by the employee.

U. Other Financial Instruments

Fair Value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (i) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (ii) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:

• Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

• Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates); and inputs that are derived principally from or corroborated by observable market data by correlation or other means.

• Level 3—Inputs that are both significant to the fair value measurement and unobservable.

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The carrying values and fair values of Arconic’s financial instruments were as follows:

	2017				2016
December 31,	Carrying value		Fair value		Carrying value		Fair value
Cash and cash equivalents	$	2,150	$	2,150	$	1,863	$	1,863
Restricted cash	4		4		15		15
Derivatives – current asset	61		61		14		14
Noncurrent receivables	20		20		21		21
Derivatives – noncurrent asset	33		33		10		10
Available-for-sale securities	106		106		102		102
Investment in common stock of Alcoa Corporation	—		—		1,020		1,020
Short-term debt	38		38		40		40
Derivatives – current liability	45		45		5		5
Commercial paper	—		—		—		—
Derivatives – noncurrent liability	14		14		3		3
Contingent payment related to an acquisition	—		—		78		78
Long-term debt, less amount due within one year	6,806		7,443		8,044		8,519

The following methods were used to estimate the fair values of financial instruments:

Cash and cash equivalents, Restricted cash, Short-term debt, and Commercial paper. The carrying amounts approximate fair value because of the short maturity of the instruments. The fair value amounts for Cash and cash equivalents, Restricted cash, and Commercial paper were classified in Level 1, and Short-term debt was classified in Level 2.

Derivatives. The fair value of derivative contracts classified as Level 1 was based on identical unrestricted assets and liabilities. The fair value of derivative contracts classified as Level 2 was based on inputs other than quoted prices that are observable for the asset or liability (e.g. interest rates).

Noncurrent receivables. The fair value of noncurrent receivables was based on anticipated cash flows, which approximates carrying value, and was classified in Level 2 of the fair value hierarchy.

Available-for-sale securities. The fair value of such securities was based on quoted market prices. These financial instruments consist of exchange-traded fixed income securities, which are carried at fair value and were classified in Level 1 of the fair value hierarchy.

Investment in common stock of Alcoa Corporation (see Note C). The fair value was based on the closing stock price of Alcoa Corporation on the New York Stock Exchange at December 31, 2016 multiplied by the number of shares of Alcoa Corporation stock owned by Arconic as of December 31, 2016. This investment was classified in Level 1 of the fair value hierarchy.

Contingent payment related to an acquisition (see Note F). The fair value was based on the net present value of expected future cash flows and was classified in Level 3 of the fair value hierarchy.

Long-term debt, less amount due within one year. The fair value was based on quoted market prices for public debt and on interest rates that are currently available to Arconic for issuance of debt with similar terms and maturities for non-public debt. The fair value amounts for all Long-term debt were classified in Level 2 of the fair value hierarchy.

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V. Subsequent Events

Management evaluated all activity of Arconic and concluded that no subsequent events have occurred that would require recognition in the Consolidated Financial Statements or disclosure in the Notes to the Consolidated Financial Statements, except as noted below:

In January 2018, the Company announced the freeze of its U.S. defined benefit pension plans for salaried and non-bargained hourly employees, effective April 1, 2018. Benefit accruals for future service and compensation under all of the Company’s qualified and non-qualified defined benefit pension plans for U.S. salaried and non-bargained hourly employees (the “Pension Plans”) will cease. In connection with this change, effective April 1, 2018, impacted employees will commence receiving an employer contribution of 3% of eligible compensation under the Arconic Salaried Retirement Savings Plan, and, for the period from April 1, 2018 through December 31, 2018, an additional transition employer contribution of 3% of eligible compensation.

In January 2018, management announced a change in the organizational structure of the Engineered Products and Solutions segment, from four business units to three business units, with a focus on aligning its internal structure to core markets and customers and reducing cost. As a result of this change, goodwill will be reallocated to the three new reporting units and evaluated for impairment during the first quarter of 2018. The Company does not expect any goodwill impairment as a result of the realignment.

In February 2018, the Company announced that its Board of Directors authorized a share repurchase program of up to $500 of its outstanding common stock and a $500 early debt reduction. Under the share repurchase program, the Company may repurchase shares from time to time, in amounts, at prices, and at such times as the Company deems appropriate. Repurchases will be subject to market conditions, legal requirements and other considerations. Arconic is not obligated to repurchase any specific number of shares or to do so at any particular time, and the share repurchase program may be suspended, modified or terminated at any time without prior notice. For the early debt reduction, Arconic intends to redeem in March 2018 all of its outstanding 5.72% Notes due in 2019.

Beginning in the first quarter of 2018, the Company's primary measure of segment performance will change from Adjusted EBITDA to Operating income, which more closely aligns segment performance with Operating income as presented in the Statement of Consolidated Operations. As part of this change, LIFO and metal price lag will be included in the Operating income of the segments.

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Supplemental Financial Information (unaudited)

Quarterly Data

(in millions, except per-share amounts)

	First			Second		Third		Fourth(2)			Year
2017
Sales	$	3,192		$	3,261	$	3,236	$	3,271		$	12,960
Net income (loss) attributable to Arconic	$	322		$	212	$	119	$	(727	)	$	(74	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Net income (loss) per share—basic	$	0.69		$	0.44	$	0.23	$	(1.51	)	$	(0.28	)
Diluted
Net income (loss) per share—diluted	$	0.65		$	0.43	$	0.22	$	(1.51	)	$	(0.28	)
2016
Sales	$	3,055		$	3,234	$	3,138	$	2,967		$	12,394
Net income (loss) attributable to Arconic	$	16		$	135	$	166	$	(1,258	)	$	(941	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.23		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.34	$	(2.91	)	$	(2.31	)
Diluted
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.22		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.33	$	(2.91	)	$	(2.31	)

⁽¹⁾  Per share amounts are calculated independently for each period presented; therefore, the sum of the quarterly per share amounts may not equal the per share amounts for the year.

⁽²⁾  In the fourth quarter of 2017, Arconic recorded an impairment of goodwill related to the forgings and extrusions business of $719 ($719 pre-tax); a provisional charge of $272 associated with the revaluation of U.S. net deferred tax assets due to a decrease in the U.S. corporate tax rate from 35% to 21%, as well as a one-time transition tax on the non-previously taxed earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017; a favorable adjustment to the Firth Rixson earn-out liability of $81 ($81 pre-tax); and a favorable adjustment to a separation-related guarantee liability of $18 ($25 pre-tax). In the fourth quarter of 2016, as a result of the Separation Transaction, Arconic recorded a charge of $1,267 for valuation allowances on certain deferred tax assets.

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Item 9.  Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

None.

Item 9A.  Controls and Procedures.

(a) Evaluation of Disclosure Controls and Procedures

Arconic’s Chief Executive Officer and Chief Financial Officer have evaluated the Company’s disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as of the end of the period covered by this report, and they have concluded that these controls and procedures are effective.

(b) Management’s Annual Report on Internal Control over Financial Reporting

Management’s Report on Internal Control over Financial Reporting is included in Part II, Item 8 of this Form 10-K beginning on page 57.

(c) Attestation Report of the Registered Public Accounting Firm

The effectiveness of Arconic’s internal control over financial reporting as of December 31, 2017 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report, which is included in Part II, Item 8 of this Form 10-K on pages 58-59.

(d) Changes in Internal Control over Financial Reporting

There have been no changes in internal control over financial reporting during the fourth quarter of 2017, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Item 9B.  Other Information.

None.

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PART III

Item 10.  Directors, Executive Officers and Corporate Governance.

The information required by Item 401 of Regulation S-K regarding directors is contained under the caption “Item 1 Election of Directors” of the Proxy Statement and is incorporated by reference. The information required by Item 401 of Regulation S-K regarding executive officers is set forth in Part I, Item 1 of this report under “Executive Officers of the Registrant”.

The information required by Item 405 of Regulation S-K is contained under the caption “Section 16(a) Beneficial Ownership Reporting Compliance” of the Proxy Statement and is incorporated by reference.

The Company’s Code of Ethics for the CEO, CFO and Other Financial Professionals is publicly available on the Company’s Internet website at http://www.arconic.com under the section “Investors—Corporate Governance.” The remaining information required by Item 406 of Regulation S-K is contained under the captions “Corporate Governance” and “Corporate Governance—Business Conduct Policies and Code of Ethics” of the Proxy Statement and is incorporated by reference.

The information required by Items 407(c)(3), (d)(4) and (d)(5) of Regulation S-K is included under the captions “Item 1 Election of Directors—Nominating Board Candidates—Procedures and Director Qualifications” and “Corporate Governance—Committees of the Board—Audit Committee” of the Proxy Statement and is incorporated by reference.

Item 11.  Executive Compensation.

The information required by Item 402 of Regulation S-K is contained under the captions “Director Compensation”, “Executive Compensation” and “Corporate Governance—Recovery of Incentive Compensation” of the Proxy Statement. Such information is incorporated by reference.

The information required by Items 407(e)(4) and (e)(5) of Regulation S-K is contained under the captions “Corporate Governance—Compensation Committee Interlocks and Insider Participation” and “Item 3 Advisory Approval of Executive Compensation—Compensation Committee Report” of the Proxy Statement. Such information (other than the Compensation Committee Report, which shall not be deemed to be “filed”) is incorporated by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by Item 201(d) of Regulation S-K relating to securities authorized for issuance under equity compensation plans is contained under the caption “Equity Compensation Plan Information” of the Proxy Statement and is incorporated by reference.

The information required by Item 403 of Regulation S-K is contained under the captions “Arconic Stock Ownership— Stock Ownership of Certain Beneficial Owners” and “— Stock Ownership of Directors and Executive Officers” of the Proxy Statement and is incorporated by reference.

Item 13.  Certain Relationships and Related Transactions, and Director Independence.

The information required by Item 404 of Regulation S-K is contained under the captions “Executive Compensation” (excluding the information under the caption “Compensation Committee Report”) and “Corporate Governance— Related Person Transactions” of the Proxy Statement and is incorporated by reference.

The information required by Item 407(a) of Regulation S-K regarding director independence is contained under the captions “Item 1 Election of Directors” and “Corporate Governance” of the Proxy Statement and is incorporated by reference.

Item 14. Principal Accounting Fees and Services.

The information required by Item 9(e) of Schedule 14A is contained under the captions “Item 2 Ratification of Appointment of Independent Registered Public Accounting Firm—Report of the Audit Committee” and “— Audit and Non-Audit Fees” of the Proxy Statement and in Attachment A (Pre-Approval Policies and Procedures for Audit and Non-Audit Services) thereto and is incorporated by reference.

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PART IV

Item 15.  Exhibits, Financial Statement Schedules.

(a) The consolidated financial statements and exhibits listed below are filed as part of this report.

(1) The Company’s consolidated financial statements, the notes thereto and the report of the Independent Registered Public Accounting Firm are on pages 59 through 114 of this report.

(2) Financial statement schedules have been omitted because they are not applicable, not required, or the required information is included in the consolidated financial statements or notes thereto.

(3) Exhibits.

Exhibit Number	Description*
2(a).	Share Purchase Agreement, dated as of June 25, 2014, by and among Alcoa Inc., Alcoa IH Limited, FR Acquisition Corporation (US), Inc., FR Acquisitions Corporation (Europe) Limited, FR Acquisition Finance Subco (Luxembourg), S.à.r.l. and Oak Hill Capital Partners III, L.P. and Oak Hill Capital Management Partners III, L.P., collectively in their capacity as the Seller Representative, incorporated by reference to exhibit 2.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated June 27, 2014.
2(b).	Separation and Distribution Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(c).	Transition Services Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(d).	Tax Matters Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2.3 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(e).	Employee Matters Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2.4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(e)(1).	Amendment No. 1, dated December 13, 2016, to Employee Matters Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2(e)(1) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
2(f).	Alcoa Corporation to Arconic Inc. Patent, Know-How, and Trade Secret License Agreement, dated as of October 31, 2016, by and between Alcoa USA Corp. and Arconic Inc., incorporated by reference to exhibit 2.5 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(g).	Arconic Inc. to Alcoa Corporation Patent, Know-How, and Trade Secret License Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa USA Corp., incorporated by reference to exhibit 2.6 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(h).	Alcoa Corporation to Arconic Inc. Trademark License Agreement, dated as of October 31, 2016, by and between Alcoa USA Corp. and Arconic Inc., incorporated by reference to exhibit 2.7 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.

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2(h)(1)	Amended and Restated Alcoa Corporation to Arconic Inc. Trademark License Agreement, dated as of June 25, 2017, by and between Alcoa USA Corp. and Arconic Inc., incorporated by reference to exhibit 2 to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2017.
2(i).	Toll Processing and Services Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Warrick LLC, incorporated by reference to exhibit 2.8 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(j).	Master Agreement for the Supply of Primary Aluminum, dated as of October 31, 2016, by and between Alcoa Corporation and its affiliates and Arconic Inc., incorporated by reference to exhibit 2.9 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(k).	Massena Lease and Operations Agreement, dated as of October 31, 2016, by and between Arconic Inc. and Alcoa Corporation, incorporated by reference to exhibit 2.10 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 4, 2016.
2(l).	Agreement and Plan of Merger, dated October 12, 2017, by and between Arconic Inc., a Pennsylvania corporation, and Arconic Inc., a Delaware corporation, incorporated by reference to exhibit 2.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
3(a).	Certificate of Incorporation of Arconic Inc., a Delaware corporation, incorporated by reference to exhibit 3.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
3(b).	Bylaws of Arconic Inc., a Delaware corporation, incorporated by reference to exhibit 3.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
4(a).	Form of Certificate for Shares of Common Stock of Arconic Inc., a Delaware corporation, incorporated by reference to exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
4(b).	Bylaws. See exhibit 3(b) above.
4(c).	Form of Indenture, dated as of September 30, 1993, between Alcoa Inc. and The Bank of New York Trust Company, N.A., as successor to J. P. Morgan Trust Company, National Association (formerly Chase Manhattan Trust Company, National Association), as successor Trustee to PNC Bank, National Association, as Trustee (undated form of Indenture incorporated by reference to exhibit 4(a) to Registration Statement No. 33-49997 on Form S-3).
4(c)(1).	First Supplemental Indenture, dated as of January 25, 2007, between Alcoa Inc. and The Bank of New York Trust Company, N.A., as successor to J.P. Morgan Trust Company, National Association (formerly Chase Manhattan Trust Company, National Association), as successor Trustee to PNC Bank, National Association, as Trustee, incorporated by reference to exhibit 99.4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 25, 2007.
4(c)(2).	Second Supplemental Indenture, dated as of July 15, 2008, between Alcoa Inc. and The Bank of New York Mellon Trust Company, N.A., as successor in interest to J. P. Morgan Trust Company, National Association (formerly Chase Manhattan Trust Company, National Association, as successor to PNC Bank, National Association), as Trustee, incorporated by reference to exhibit 4(c) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated July 15, 2008.
4(c)(3).	Fourth Supplemental Indenture, dated as of December 31, 2017, between Arconic Inc., a Pennsylvania corporation, Arconic Inc., a Delaware corporation, and The Bank of New York Mellon Trust Company, N.A., as trustee, incorporated by reference to exhibit 4.3 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.

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4(d).	Form of 6.75% Bonds Due 2028.
4(e).	Form of 5.90% Notes Due 2027, incorporated by reference to exhibit 4(e) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2008.
4(f).	Form of 5.95% Notes Due 2037, incorporated by reference to exhibit 4(f) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2008.
4(g).	Form of 5.72% Notes Due 2019, incorporated by reference to exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 21, 2007.
4(h).	Form of 5.87% Notes Due 2022, incorporated by reference to exhibit 4.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 21, 2007.
4(i).	Form of 6.150% Notes Due 2020, incorporated by reference to exhibit 4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated August 3, 2010.
4(j).	Form of 5.40% Notes Due 2021, incorporated by reference to exhibit 4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated April 21, 2011.
4(k).	Form of 5.125% Notes Due 2024, incorporated by reference to exhibit 4.5 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated September 22, 2014.
4(l).	Indenture, dated as of December 14, 2010, between RTI International Metals, Inc. and The Bank of New York Trust Company, N.A., as Trustee, incorporated by reference to exhibit 4(m) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.
4(l)(1).	Third Supplemental Indenture, dated as of April 17, 2013, between RTI International Metals, Inc. and The Bank of New York Trust Company, N.A., as Trustee, incorporated by reference to exhibit 4(n) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.
4(l)(2).	Fourth Supplemental Indenture, dated as of July 23, 2015, between RTI International Metals, Inc. and The Bank of New York Trust Company, N.A., as Trustee, incorporated by reference to exhibit 4.1 on Form 8-K (Commission file number 1-3610) dated July 23, 2015.
4(l)(3).	Fifth Supplemental Indenture, dated as of November 30, 2017, between RTI International Metals, Inc. and The Bank of New York Trust Company, N.A., as Trustee, incorporated by reference to exhibit 4.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated December 4, 2017.
4(l)(4).	Sixth Supplemental Indenture, dated as of December 31, 2017, between Arconic Inc., a Pennsylvania corporation, Arconic Inc., a Delaware corporation, and The Bank of New York Mellon Trust Company, N.A., as Trustee, incorporated by reference to exhibit 4.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
4(l)(5).	Form of 1.625% Convertible Senior Notes Due 2019. See exhibit 4(l)(1) above.
4(m).	Arconic Bargaining Retirement Savings Plan (formerly known as the Alcoa Retirement Savings Plan for Bargaining Employees), as Amended and Restated effective January 1, 2015, incorporated by reference to exhibit 4(p) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.

117

4(n).	Arconic Hourly Non-Bargaining Retirement Savings Plan (formerly known as the Alcoa Retirement Savings Plan for Hourly Non-Bargaining Employees), as Amended and Restated effective January 1, 2015, incorporated by reference to exhibit 4(q) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.
4(o).	Arconic Fastener Systems and Rings Retirement Savings Plan (formerly known as the Alcoa Retirement Savings Plan for Fastener Systems Employees), as Amended and Restated effective January 1, 2015, incorporated by reference to exhibit 4(r) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.
4(p).	Arconic Salaried Retirement Savings Plan (formerly known as the Alcoa Retirement Savings Plan for Salaried Employees), as Amended and Restated effective January 1, 2015, incorporated by reference to exhibit 4(s) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2015.
4(q).	Arconic Retirement Savings Plan for ATEP Bargaining Employees, effective January 1, 2017, incorporated by reference to exhibit 4 to Post-Effective Amendment, dated December 30, 2016, to Registration Statement No. 333-32516 on Form S-8.
10(a).	Earnout Agreement, dated as of June 25, 2014, by and among Alcoa Inc., FR Acquisition Finance Subco (Luxembourg), S.à.r.l. and Oak Hill Capital Partners III, L.P. and Oak Hill Capital Management Partners III, L.P., collectively in their capacity as the Seller Representative, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated June 27, 2014.
10(b).	Five-Year Revolving Credit Agreement, dated as of July 25, 2014, among Alcoa Inc., the Lenders and Issuers named therein, Citibank, N.A., as Administrative Agent for the Lenders and Issuers, and JPMorgan Chase Bank, N.A., as Syndication Agent, incorporated by reference to exhibit 10.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated July 31, 2014.
10(b)(1).	Extension Request and Amendment Letter, dated as of June 5, 2015, among Alcoa Inc., each lender and issuer party thereto, and Citibank, N.A., as Administrative Agent, effective July 7, 2015, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated July 13, 2015.
10(b)(2).	Amendment No. 1, dated September 16, 2016, to the Five-Year Revolving Credit Agreement dated as of July 25, 2014, among Arconic Inc., the lenders and issuers named therein, Citibank, N.A., as administrative agent, and JPMorgan Chase Bank, N.A. as syndication agent, incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated September 19, 2016.
10(b)(3).	Assumption Agreement, dated as of December 31, 2017, by Arconic Inc., a Delaware corporation, in favor of and for the benefit of the Lenders and Citibank, N.A., as administrative agent, incorporated by reference to exhibit 4.4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 4, 2018.
10(c).	Plea Agreement dated January 8, 2014, between the United States of America and Alcoa World Alumina LLC, incorporated by reference to exhibit 10(l) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2013.
10(d).	Offer of Settlement of Alcoa Inc. before the Securities and Exchange Commission dated December 27, 2013, incorporated by reference to exhibit 10(m) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2013.
10(e).	Securities and Exchange Commission Order dated January 9, 2014, incorporated by reference to exhibit 10(n) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2013.

118

10(f).	Agreement, dated February 1, 2016, by and between Elliott Associates, L.P., Elliott International, L.P., Elliott International Capital Advisors Inc. and Alcoa Inc., incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 1, 2016.
10(g).	Settlement Agreement, dated as of May 22, 2017, by and among Elliott Associates, L.P., Elliott International, L.P., Elliott International Capital Advisors Inc. and Arconic Inc., incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 22, 2017 (reporting an event on May 21, 2017).
10(h).	Letter Agreement, by and among Arconic Inc. and Elliott Associates, L.P., Elliott International, L.P. and Elliott International Capital Advisors Inc., dated as of December 19, 2017, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated December 19, 2017.
10(i).	Registration Rights Agreement, by and among Arconic Inc. and Elliott Associates, L.P., Elliott International, L.P. and Elliott International Capital Advisors Inc., dated as of December 19, 2017, incorporated by reference to exhibit 10.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated December 19, 2017.
10(i)(1).	Amendment to Registration Rights Agreement, by and among Arconic Inc. and Elliott Associates, L.P., Elliott International, L.P. and Elliott International Capital Advisors Inc., dated as of February 2, 2018, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 6, 2018.
10(j).	Alcoa Internal Revenue Code Section 162(m) Compliant Annual Cash Incentive Compensation Plan, as Amended and Restated, incorporated by reference to Exhibit 10(b) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 11, 2016.
10(k).	2004 Summary Description of the Alcoa Incentive Compensation Plan, incorporated by reference to exhibit 10(g) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2004.
10(k)(1).	Incentive Compensation Plan of Alcoa Inc., as revised and restated effective November 8, 2007, incorporated by reference to exhibit 10(k)(1) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2007.
10(k)(2).	Amendment to Incentive Compensation Plan of Alcoa Inc., effective December 18, 2009, incorporated by reference to exhibit 10(n)(2) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2009.
10(l).	Arconic Employees’ Excess Benefits Plan C (formerly referred to as the Alcoa Inc. Employees’ Excess Benefits Plan, Plan C), as amended and restated effective August 1, 2016, incorporated by reference to exhibit 10(j) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(l)(1).	First Amendment to Arconic Employees’ Excess Benefits Plan C (as amended and restated effective August 1, 2016), effective January 1, 2018.
10(l)(2).	Second Amendment to Arconic Employees’ Excess Benefits Plan C (as amended and restated effective August 1, 2016), effective January 1, 2018.
10(l)(3)	Third Amendment to Arconic Employees’ Excess Benefits Plan C (as amended and restated effective August 1, 2016), incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 8, 2018.

119

10(m).	Deferred Fee Plan for Directors, as amended effective July 9, 1999, incorporated by reference to exhibit 10(g)(1) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 1999.
10(n).	Amended and Restated Deferred Fee Plan for Directors, effective November 1, 2016, incorporated by reference to exhibit 10(c) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2016.
10(o).	Non-Employee Director Compensation Policy, effective November 1, 2016, incorporated by reference to exhibit 10(d) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2016.
10(p).	Non-Employee Director Compensation Policy, effective December 5, 2017.
10(q).	Fee Continuation Plan for Non-Employee Directors, incorporated by reference to exhibit 10(k) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 1989.
10(q)(1).	Amendment to Fee Continuation Plan for Non-Employee Directors, effective November 10, 1995, incorporated by reference to exhibit 10(i)(1) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 1995.
10(q)(2).	Second Amendment to the Fee Continuation Plan for Non-Employee Directors, effective September 15, 2006, incorporated by reference to exhibit 10.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated September 20, 2006.
10(r).	Arconic Deferred Compensation Plan, as amended and restated effective August 1, 2016, incorporated by reference to exhibit 10(p) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(r)(1).	First Amendment to the Arconic Deferred Compensation Plan (as amended and restated effective August 1, 2016), effective January 1, 2018.
10(s).	Summary of the Executive Split Dollar Life Insurance Plan, dated November 1990, incorporated by reference to exhibit 10(m) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 1990.
10(t).	Amended and Restated Dividend Equivalent Compensation Plan, effective January 1, 1997, incorporated by reference to exhibit 10(h) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2004.
10(u).	Form of Indemnity Agreement between the Company and individual directors or officers, incorporated by reference to exhibit 10(j) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 1987.)
10(v).	Form of Indemnification Agreement between the Company and individual directors or officers, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated January 25, 2018.
10(w).	Amended and Restated 2009 Alcoa Stock Incentive Plan, dated February 15, 2011, incorporated by reference to exhibit 10(z)(1) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2010.

120

10(x).	Arconic Supplemental Pension Plan for Senior Executives (formerly referred to as the Alcoa Supplemental Pension Plan for Senior Executives), as amended and restated effective August 1, 2016, incorporated by reference to exhibit 10(v) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(x)(1).	First Amendment to Arconic Supplemental Pension Plan for Senior Executives (as amended and restated effective August 1, 2016), effective January 1, 2018.
10(x)(2).	Second Amendment to Arconic Supplemental Pension Plan for Senior Executives (as amended and restated effective August 1, 2016), effective January 1, 2018.
10(y).	Deferred Fee Estate Enhancement Plan for Directors, effective July 10, 1998, incorporated by reference to exhibit 10(r) to the Company’s Annual Report on Form 10-K (Commission file number 1- 3610) for the year ended December 31, 1998.
10(z).	Arconic Inc. Change in Control Severance Plan, as amended and restated effective February 1, 2018, incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 6, 2018.
10(aa).	Letter Agreement, dated August 14, 2007, between Alcoa Inc. and Klaus Kleinfeld, incorporated by reference to exhibit 10(b) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2007.
10(bb).	Executive Severance Agreement, as amended and restated effective December 8, 2008, between Alcoa Inc. and Klaus Kleinfeld, incorporated by reference to exhibit 10(gg) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2008.
10(bb)(1).	Letter Agreement between Arconic Inc. and Klaus Kleinfeld, dated February 27, 2017, incorporated by reference to exhibit 10(y)(1) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(cc).	Separation Agreement between Arconic Inc. and Klaus Kleinfeld, dated July 31, 2017, incorporated by reference to exhibit 10(c) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2017.
10(dd).	Form of Executive Severance Agreement between the Company and new officers entered into after July 22, 2010, incorporated by reference to exhibit 10(a) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended September 30, 2010.
10(ee).	Arconic Inc. Executive Severance Plan, as effective February 27, 2017, incorporated by reference to exhibit 10(aa) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(ff)	Letter Agreement, by and between Alcoa Inc. and Katherine H. Ramundo, dated as of July 28, 2016.
10(gg)	Letter Agreement between Arconic Inc. and David P. Hess, dated May 17, 2017, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 22, 2017 (reporting an event on May 17, 2017).
10(hh)	Letter Agreement, by and between Arconic Inc. and Charles P. Blankenship, dated as of October 19, 2017, incorporated by reference to exhibit 10.1 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated October 23, 2017
10(ii)	Letter Agreement, by and between Arconic Inc. and Mark J. Krakowiak, dated as of January 20, 2018.

121

10(jj).	Arconic Global Pension Plan, as amended and restated effective August 1, 2016, incorporated by reference to exhibit 10(bb) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(kk).	Global Expatriate Employee Policy (pre-January 1, 2003), incorporated by reference to exhibit 10(uu) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2005.
10(ll).	Summary Description of Equity Choice Program for Performance Equity Award Participants, dated November 2005, incorporated by reference to exhibit 10.6 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated November 16, 2005.
10(mm).	2013 Arconic Stock Incentive Plan, as Amended and Restated, incorporated by reference to exhibit 10(a) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 11, 2016.
10(mm)(1).	Terms and Conditions (Australian Addendum) to the 2013 Arconic Stock Incentive Plan, effective May 3, 2013, incorporated by reference to exhibit 10(d) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 8, 2013.
10(mm)(2).	First Amendment to the 2013 Arconic Stock Incentive Plan, as amended and restated, incorporated by reference to exhibit 10.4 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated February 6, 2018.
10(nn).	RTI International Metals, Inc. 2004 Stock Plan, incorporated by reference to exhibit 4(b) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated July 23, 2015.
10(oo).	RTI International Metals, Inc. 2014 Stock and Incentive Plan, incorporated by reference to exhibit 4(a) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated July 23, 2015.
10(oo)(1).	First Amendment to the RTI International Metals, Inc. 2014 Stock and Incentive Plan, as amended and assumed by Arconic Inc., dated January 19, 2018.
10(pp).	Form of Award Agreement for Stock Options, effective May 8, 2009, incorporated by reference to exhibit 10.2 to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 13, 2009.
10(qq).	Form of Award Agreement for Stock Options, effective January 1, 2010, incorporated by reference to exhibit 10(ddd) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2009.
10(rr).	Terms and Conditions for Stock Options, effective January 1, 2011, incorporated by reference to exhibit 10(c) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2011.
10(ss).	Terms and Conditions for Stock Option Awards, effective May 3, 2013, incorporated by reference to exhibit 10(b) to the Company’s Current Report on Form 8-K (Commission file number 1-3610) dated May 8, 2013.
10(tt).	Terms and Conditions for Stock Option Awards under the 2013 Arconic Stock Incentive Plan, effective July 22, 2016, incorporated by reference to Exhibit 10(d) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2016.
10(uu).	Global Stock Option Award Agreement, effective January 19, 2018.
10(vv).	Stock Option Award Agreement - Chief Executive Officer (Charles P. Blankenship) Initial Equity Award, effective January 19, 2018.

122

10(ww).	Terms and Conditions for Restricted Share Units, effective January 1, 2011, incorporated by reference to exhibit 10(b) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2011.
10(xx).	Terms and Conditions for Restricted Share Units, effective May 3, 2013, incorporated by reference to exhibit 10(c) to the Company’s Current Report on Form 8-K (Commission file number 1- 3610) dated May 8, 2013.
10(yy).	Terms and Conditions for Restricted Share Units under the 2013 Arconic Stock Incentive Plan, effective July 22, 2016, incorporated by reference to Exhibit 10(c) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2016.
10(zz).	Terms and Conditions for Restricted Share Units for Annual Director Awards under the 2013 Arconic Stock Incentive Plan, effective November 30, 2016, incorporated by reference to exhibit 10(vv) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(aaa).	Terms and Conditions for Deferred Fee Restricted Share Units for Director Awards under the 2013 Arconic Stock Incentive Plan, effective November 30, 2016, incorporated by reference to exhibit 10(ww) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(bbb).	Terms and Conditions for Restricted Share Units issued on or after January 13, 2017, under the 2013 Arconic Stock Incentive Plan, effective January 13, 2017, incorporated by reference to exhibit 10(xx) to the Company’s Annual Report on Form 10-K (Commission file number 1-3610) for the year ended December 31, 2016.
10(ccc).	Terms and Conditions for Restricted Share Units - Interim CEO (David P. Hess) Award, effective October 23, 2017.
10(ddd).	Terms and Conditions for Restricted Share Units - Non-Executive Chairman (John C. Plant) Director Award, effective October 23, 2017.
10(eee).	Global Restricted Share Unit Award Agreement, effective January 19, 2018.
10(fff).	Terms and Conditions for Restricted Share Units issued on or after January 19, 2018, under the 2013 Arconic Stock Incentive Plan, effective January 19, 2018.
10(ggg).	Restricted Share Unit Award Agreement - Chief Executive Officer (Charles P. Blankenship) Initial Equity Award, effective January 19, 2018.
10(hhh).	Restricted Share Unit Award Agreement - Sign-On Award - Mark J. Krakowiak (2018 Grant), effective February 15, 2018.
10(iii).	Terms and Conditions for Special Retention Awards under the 2013 Arconic Stock Incentive Plan, effective January 1, 2015, incorporated by reference to exhibit 10(a) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2015.
10(jjj).	Terms and Conditions for Special Retention Awards under the 2013 Arconic Stock Incentive Plan, effective July 22, 2016, incorporated by reference to exhibit 10(e) to the Company’s Quarterly Report on Form 10-Q (Commission file number 1-3610) for the quarter ended June 30, 2016.
10(kkk).	Global Special Retention Award Agreement, effective January 19, 2018.

123

12.	Computation of Ratio of Earnings to Fixed Charges.
21.	Subsidiaries of the Registrant.
23.	Consent of Independent Registered Public Accounting Firm.
24.	Power of Attorney for certain directors.
31.	Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.	Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101. INS	XBRL Instance Document.
101. SCH	XBRL Taxonomy Extension Schema Document.
101. CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101. DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101. LAB	XBRL Taxonomy Extension Label Linkbase Document.
101. PRE	XBRL Taxonomy Extension Presentation Linkbase Document.

* Exhibit Nos. 10(j) through 10(kkk) are management contracts or compensatory plans required to be filed as Exhibits to this Form 10-K.

Amendments and modifications to other Exhibits previously filed have been omitted when in the opinion of the registrant such Exhibits as amended or modified are no longer material or, in certain instances, are no longer required to be filed as Exhibits.

No other instruments defining the rights of holders of long-term debt of the registrant or its subsidiaries have been filed as Exhibits because no such instruments met the threshold materiality requirements under Regulation S-K. The registrant agrees, however, to furnish a copy of any such instruments to the Commission upon request.

Item 16.  Form 10-K Summary.

None.

124

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ARCONIC INC.
February 23, 2018	By	/s/ Paul Myron
		Paul Myron
		Vice President and Controller (Also signing as Principal Accounting Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Charles P. Blankenship	Chief Executive Officer	February 23, 2018
Charles P. Blankenship	(Principal Executive Officer and Director)
/s/ Ken Giacobbe		February 23, 2018
Ken Giacobbe	Executive Vice President and Chief Financial Officer (Principal Financial Officer)

James F. Albaugh, Christopher L. Ayers, Arthur D. Collins, Jr., Elmer L. Doty, Rajiv L. Gupta, David P. Hess, Sean O. Mahoney, David J. Miller, E. Stanley O’Neal, John C. Plant, Patricia F. Russo and Ulrich R. Schmidt, each as a Director, on February 23, 2018, by Paul Myron, their Attorney-in-Fact.*

*By	/s/ Paul Myron
	Paul Myron
	Attorney-in-Fact

125

EX-4.D

Exhibit 4(d)

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York Corporation (“DTC”), to Issuer or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

This Security is a Book-Entry Security within the meaning of the Indenture hereinafter referred to and is registered in the name of a Depositary or a nominee thereof. This Security may not be transferred to, or registered or exchanged for Securities registered in the name of, any Person other than the Depositary or a nominee thereof and no such transfer may be registered, except in the limited circumstances described in the Indenture. Every Security authenticated and delivered upon registration of transfer of, or in exchange for or in lieu of, this Security shall be a Book-Entry Security subject to the foregoing, except in such limited circumstances described in the Indenture.

ALUMINUM COMPANY OF AMERICA

6.75% Bonds Due 2028

No. R-        (U.S.) $______________ CUSIP# 022249AU0

Aluminum Company of America, a corporation duly organized and existing under the laws of Pennsylvania (herein called the “Company”, which term includes any successor Person under the Indenture referred to on the reverse hereof), for value received, hereby promises to pay to Cede & Co., or registered assigns the principal sum of (United States) Dollars on January 15, 2028, and to pay interest thereon from January 27, 1998, or from the most recent January 15 or July 15 (each, an “Interest Payment Date”) to which interest has been paid or duly provided for, commencing July 15, 1998, at the rate of 6.75% per annum, until the principal hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the January 1 or July 1, as the case may be, next preceding such Interest Payment Date (each, a “Regular Record Date”). Except as otherwise provided in the Indenture, any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture. Payment of the principal of and any premium and interest on this Security will be made (a) at the Corporate Trust Office of the Trustee or such other office or agency of the Company as may be designated by it for such purpose in the Borough of Manhattan, The City of New York, in such coin or currency of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts or (b) subject to any laws or regulations applicable thereto and to the right of the Company (limited as provided in the Indenture) to rescind the designation of any such Paying Agent, at the main offices of Pittsburgh, Pennsylvania, or at such other offices or agencies as the Company may designate, by United States dollar check drawn on, or transfer to a United States dollar account maintained by the payee with, a bank in The City of New York provided, however, that at the option of the Company payment of interest may be made by United States dollar check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register.

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof, directly or through an Authenticating Agent, by manual signature of an authorized signatory, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: January 27, 1998

1

ALUMINUM COMPANY OF AMERICA

By

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture.

PNC BANK, NATIONAL ASSOCIATION as Trustee

By

Authorized Signatory

This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under an Indenture, dated as of September 30, 1993 (herein called the “Indenture”), between the Company and PNC Bank, National Association, as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, currently limited in aggregate principal amount to (U.S.) $300,000,000.

The Bonds are redeemable, in whole or in part, at the option of the Company at any time at a redemption price equal to the greater of (i) 100% of the principal amount of such Bonds or (ii) as determined by a Quotation Agent (as defined herein), the sum of the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest accrued as of the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Adjusted Treasury Rate (as defined herein) plus 15 basis points plus, in each case, accrued interest thereon to the date of redemption. The Bonds are not convertible or exchangeable into any other security of the Company.

If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

The provisions relating to defeasance and discharge set forth in Section 1302 of the Indenture and covenant defeasance set forth in Section 1303 of the Indenture are applicable to the Securities of this series.

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of 66-2/3% in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

As set forth in, and subject to, the provisions of the Indenture, no Holder of any Security of this series will have any right to institute any proceeding with respect to the Indenture or for any remedy thereunder, unless such Holder shall have previously given to the Trustee written notice of a continuing Event of Default with respect to this series, the Holders of not less than 25% in principal amount of the Outstanding Securities of this series shall have made written request, and offered reasonable indemnity, to the Trustee to institute such proceeding as trustee, and the Trustee shall not have received from the Holders of a majority in principal amount of the Outstanding Securities of this series a direction inconsistent with such request and shall have failed to institute such proceeding within 60 days; provided, however, that such limitations do not apply to a suit instituted by the Holder hereof for the enforcement of payment of the principal of any premium or interest on this Security on or after the respective due dates expressed herein.

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No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of (and premium, if any) and interest on this Security at the times, place(s) and rate, and in the coin or currency, herein prescribed.

As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register, upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable or, subject to any laws or regulations applicable thereto and to the right of the Company (limited as provided in the Indenture) to rescind the designation of any such transfer agent, at the main offices of the Company in Pittsburgh, Pennsylvania and in or at such other offices or agencies as the Company may designate, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

The Securities of this series are issuable only in registered form, without coupons, in denominations of $1,000 and any integral multiple thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

Prior to due presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

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EX-10.CCC

Exhibit 10(ccc)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

TERMS AND CONDITIONS FOR RESTRICTED SHARE UNITS

INTERIM CEO AWARD

Effective October 23, 2017

These terms and conditions, including Appendices A and B attached hereto, (the “Award Terms”) are authorized by the Compensation and Benefits Committee of the Board of Directors. They are deemed to be incorporated into and form a part of the Award of Restricted Share Units issued to the Interim Chief Executive Officer ("Interim CEO") on October 23, 2017 under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the "Plan").

Terms that are defined in the Plan have the same meanings in the Award Terms.

General Terms and Conditions

1. Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Terms. If the Plan and the Award Terms are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Terms by the Committee are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant’s account at Merrill Lynch’s OnLinewebsite www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued and paid on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below.

Vesting and Payment

2. The Restricted Share Units vest on January 15, 2018, the date of termination of the Participant’s service as Interim CEO (the “Vest Date”).

3. Except as provided in paragraph 4, if a Participant’s service as Interim CEO is terminated before the Vest Date, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death or Disability: if the Participant dies or becomes permanently and totally disabled prior to the Vest Date, the Restricted Share Units will not be forfeited but will vest and be paid in accordance with paragraph 5 below.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: the Restricted Share Units vest if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Restricted Share Units will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Restricted Share Units will be paid to the Participant in accordance with paragraph 5 below.

• Termination Following Change in Control: as further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant in accordance with paragraph 5 below.

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• Divestiture: if the Participant’s employment is to be terminated as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Committee, the Restricted Share Unit will not be forfeited and will vest and be paid in accordance with paragraph 5. For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

5. Payment. A Participant will receive one Share upon payment of each vested Restricted Share Unit. Payment of vested Restricted Share Units will be made in three equal annual installments on the first three anniversaries of the Vest Date and in any event within 90 days of each applicable anniversary date.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Restricted Share Unit must be paid by the Participant at the appropriate time under applicable tax laws. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, but will generally withhold from the Shares to be issued upon payment of the Restricted Share Unit that number of Shares with a fair market value on the vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include, for Participants subject to taxation in the United States, applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Notwithstanding the foregoing, if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended, the Company will withhold Shares from the Shares to be issued upon payment of the Restricted Share Unit, as described herein, and will not use the other means set forth in the Plan unless pursuant to an election by the Participant or in the event that withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences.

Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary’s rights and interest in the Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the

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members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “per capita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, , the Committee will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. As an additional condition of receiving the Restricted Share Unit, the Participant agrees that the Restricted Share Unit and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Terms without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Restricted Share Unit for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Terms, no Shares issuable upon vesting of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

17. Non-Transferability. The Restricted Share Units are non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Terms.

19. Notices. Any notice required or permitted under the Award Terms shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

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20. Severability and Judicial Modification. If any provision of the Award Terms is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Terms and all other provisions shall remain valid and enforceable.

21. Successors. The Award Terms shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Appendices. Notwithstanding any provisions in the Award Terms, for Participants residing and/or working outside the United States, the Restricted Share Unit shall be subject to the additional terms and conditions set forth in Appendix A to the Award Terms and to any special terms and conditions for the Participant’s country set forth in Appendix B to the Award Terms. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitute part of the Award Terms.

23. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

24. Compliance with Code Section 409A. It is intended that the Restricted Share Right granted pursuant to the Award Terms be compliant with Section 409A of the Code and the Award Terms shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Terms and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Right granted pursuant to the Award Terms satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Terms or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

25. Waiver. A waiver by the Company of breach of any provision of the Award Terms shall not operate or be construed as a waiver of any other provision of the Award Terms, or of any subsequent breach by the Participant or any other Participant.

26. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

27. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Terms and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

28. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

29. Entire Agreement. The Award Terms and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

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30. In accordance with Section 15(c) of the Plan (as in effect at the grant date), the Participant may reject the Restricted Share Unit by notifying the Company within 30 days of the grant date that he or she does not accept the Restricted Share Unit. The Participant’s acceptance of the Restricted Share Unit constitutes the Participant’s acceptance of and agreement with the Award Terms. Notwithstanding the foregoing, if required by the Company, the Participant will provide a signed copy of the Award Terms in such manner and within such timeframe as may be requested by the Company. The Company has no obligation to issue Shares to the Participant if the Participant does not accept the Restricted Share Unit.

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APPENDIX A

TO THE ARCONIC, INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Restricted Share Units if the Participant resides and/or works outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Terms and Conditions for Restricted Share Units (the “Terms and Conditions”).

A. Termination. This provision supplements paragraph 3 of the Terms and Conditions.

The Company will determine when the Participant is no longer providing services for purposes of the Restricted Share Units (including whether the Participant may still be considered to be providing services while on a leave of absence).

B. Responsibility for Taxes. This provision replaces paragraph 6 of the Terms and Conditions.

The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Subsidiary that employs the Participant (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of these Restricted Shares Units, including, but not limited to, the grant, vesting or settlement of Restricted Shares Units, the subsequent sale of Shares acquired pursuant to the Restricted Share Unit and the receipt of any dividends or dividend equivalents; and (b) do not commit to and are under no obligation to structure the terms of the Restricted Share Units or any aspect of the Restricted Share Units to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. The Participant shall not make any claim against the Company, the Employer or any other Subsidiary, or their respective board, officers or employees related to Tax-Related Items arising from this Award. Furthermore, if the Participant has become subject to tax in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Participant will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: (i) requiring a cash payment from the Participant; (ii) withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer, (iii) withholding from the proceeds of the sale of Shares acquired pursuant to the Restricted Share Units, either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization without further consent); and/or (iv) withholding from the Shares subject to Restricted Share Units.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant will receive a refund of any over-withheld amount in cash and will have no entitlement to the Share equivalent. If the obligation for Tax-Related Items is satisfied by withholding in Shares, the Participant is deemed, for tax purposes, to have been issued the full number of Shares subject to the vested Restricted Shares Units, notwithstanding that a number of the Shares is held back solely for the purpose of paying the Tax-Related Items.

Finally, the Participant shall pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Tax-Related Items.

C.    Nature of Award. In accepting the Restricted Share Units, the Participant acknowledges, understands and agrees that:

     a.    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

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     b.    this Award of Restricted Share Units is voluntary and occasional and does not create any contractual or other right to receive future Restricted Share Units, or benefits in lieu of Restricted Share Units, even if Restricted Share Units have been granted in the past;

     c.    all decisions with respect to future Restricted Share Units or other Awards, if any, will be at the sole discretion of the Company;

     d.    this Award of Restricted Share Units and the Participant’s participation in the Plan shall not create a right to, or be interpreted as forming an employment or service contract with the Company and shall not interfere with the ability of the Employer to terminate the Participant’s employment contract (if any) at any time;

     e.    the Participant’s participation in the Plan is voluntary;

     f.    this Award of Restricted Share Units and the Shares acquired under the Plan, and the income and value of same, are not part of normal or expected compensation or salary for any purposes, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

     g.    the future value of the Shares subject to the Restricted Share Unit is unknown and cannot be predicted with certainty;

     h.    unless otherwise agreed with the Company, Restricted Share Units and the Shares acquired under the Plan, and the income and value of same, are not granted as consideration for, or in connection with, the service the Participant may provide as a director of any Subsidiary;

     i.    no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Award of Restricted Share Units resulting from termination of the Participant’s employment relationship (for any reason whatsoever and regardless of whether later found to be invalid or in breach of applicable laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any), and, in consideration of this Award of Restricted Share Units to which the Participant is not otherwise entitled, the Participant irrevocably agrees never to institute any claim against the Company, the Employer and any other Subsidiary, waives his or her ability, if any, to bring any such claim, and releases the Company, the Employer and all other Subsidiaries from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Participant shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claims;

     j.    unless otherwise provided in the Plan or by the Company in its discretion, this Award of Restricted Share Units and the benefits under the Plan evidenced by these Award Terms do not create any entitlement to have this Award of Restricted Share Units or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

     k.    neither the Company, the Employer nor any other Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Restricted Share Units or of any amounts due to the Participant pursuant to the Restricted Share Units or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data as described in these Award Terms and any other grant materials by and among, as applicable, the Company, the Employer and any other Subsidiary for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan.

The Participant understands that the Company and the Employer may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all Restricted Share Units or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

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The Participant understands that Data may be transferred to Merrill Lynch, which is assisting the Company with the implementation, administration and management of the Plan. The Participant understands that the recipients of Data may be located in the United States or elsewhere, and that the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of Data by contacting the Participant’s local human resources representative. The Participant authorizes the Company, Merrill Lynch and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Participant’s consent is that the Company would not be able to grant this Award of Restricted Share Units or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of the Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.

E. Retirement. Notwithstanding paragraph 4 of the Terms and Conditions, if the Company receives an opinion of counsel that there has been a legal judgment and/or legal development in the Participant’s jurisdiction that would likely result in the favorable treatment applicable to the Restricted Share Units pursuant to paragraph 4 being deemed unlawful and/or discriminatory, then the Company will not apply the favorable treatment at the time of the Participant’s retirement, and the Restricted Share Units will be treated as set forth in the remaining provisions of paragraph 4 of the Terms and Conditions.

F. Language. If the Participant has received these Award Terms, or any other document related to this Award of Restricted Share Units and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

G. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect his or her ability to acquire or sell Shares or rights to Shares under the

Plan during such times as the Participant is considered to have “inside information” regarding the Company (as defined by applicable laws in his or her country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

H. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant’s participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant’s compliance.

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APPENDIX B

TO THE ARCONIC, INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Terms and Conditions for Restricted Share Units (the “Terms and Conditions”).

Terms and Conditions

This Appendix B includes special terms and conditions that govern Restricted Share Units if the Participant resides and/or works in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or working, or if the Participant transfers to another country after the grant of Restricted Share Units or is considered a resident of another country for local law purposes, the Committee shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of January 2016. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant’s country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently works and/or resides, or if the Participant transfers to another country after the grant of the Restricted Share Unit, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

AUSTRALIA

Notifications

Exchange Control Information.

Exchange control reporting is required for cash transactions exceeding A$10,000 and for international fund transfers. If an Australian bank is assisting with the transaction, the bank will file the report on the Participant’s behalf.

Tax Information.

The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to conditions in the Act).

B-1

BELGIUM

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a Belgian resident, the Participant is required to report any bank accounts opened and maintained outside of Belgium (e.g., brokerage accounts opened in connection with the Plan) on his or her annual tax return. In a separate report, the Participant is required to provide the National Bank of Belgium with certain details regarding such foreign accounts (including the account number, bank name and country in which any such account was opened). This report, as well as additional information on how to complete it, can be found on the website of the National Bank of Belgium, www.nbb.be, under Kredietcentrales / Centrales des crédits caption. The Participant should consult with his or her personal tax advisor to determine his or her personal reporting obligations.

BRAZIL

Terms and Conditions

Compliance with Law.

By accepting the Restricted Share Units, the Participant acknowledges that he or she agrees to comply with applicable Brazilian laws and to pay any and all applicable taxes associated with the vesting of the Restricted Share Units, the sale of the Shares acquired under the Plan and the receipt of any dividends.

Acknowledgement of Nature of the Grant.

This provision supplements paragraph C “Nature of Award” of Appendix A:

By accepting the Restricted Share Units, the Participant agrees that he or she is making an investment decision, the Shares will be issued to the Participant only if the vesting conditions are met and any necessary services are rendered by the Participant over the vesting period, and the value of the underlying Shares is not fixed and may increase or decrease in value over the vesting period without compensation to the Participant.

Notifications

Exchange Control Information.

If the Participant is a resident of or domiciled in Brazil, he or she will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of the assets and rights is equal to or greater than US$100,000. If such amount exceeds US$100,000,000, the declaration must be submitted quarterly. Assets and rights that must be reported include Shares acquired under the Plan.

Tax on Financial Transactions (IOF).

Repatriation of funds (e.g., sale proceeds) into Brazil and the conversion of USD into BRL associated with such fund transfers may be subject to the Tax on Financial Transactions. It is the Participant’s responsibility to comply with any applicable Tax on Financial Transactions arising from the Participant’s participation in the Plan. The Participant should consult with his or her personal tax advisor for additional details.

CANADA

Terms and Conditions

Award Settled Only in Shares.

Notwithstanding any discretion in the Plan, the Award of Restricted Share Units shall be settled in Shares only. The Participant is not entitled to receive a cash payment pursuant to the Award.

B-2

Termination of Service.

The following provision replaces paragraph A “Termination” of Appendix A:

For purposes of the Restricted Share Units, the Participant’s employment relationship will be considered terminated (regardless of the reason for such termination and whether or not later found to be invalid or in breach of Canadian laws or the terms of the Participant’s employment agreement, if any) effective as of the date that is the earlier of (i) the date of the Participant’s termination, (ii) the date the Participant receives notice of termination, or (iii) the date the Participant is no longer actively providing service and will not be extended by any notice period (e.g., active service would not include any contractual notice period or any period of “garden leave” or similar period mandated under Canadian laws or the terms of the Participant’s employment agreement, if any). Unless otherwise expressly provided in these Award Terms or determined by the Company, the Participant’s right to vest in the Restricted Share Units, if any, will terminate on such date. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing service for purposes of the Restricted Share Unit (including whether the Participant may still be considered to be providing services while on a leave of absence).

The Following Provisions Apply for Participants Resident in Quebec:

Consent to Receive Information in English.

The Participant acknowledges that it is the express wish of the parties that these Award Terms, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be written in English.

Les parties reconnaissent avoir exigé la rédaction en anglais de Conditions d’attribution, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement à, la présente convention.

Authorization to Release and Transfer Necessary Personal Information.

The following provision supplements paragraph D “Data Privacy” of Appendix A:

The Participant hereby authorizes the Company and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the administration and operation of the Plan. The Participant further authorizes the Company, any Subsidiary and the administrator of the Plan to disclose and discuss the Plan with their advisors. The Participant further authorizes the Company and any Subsidiary to record such information and to keep such information in the Participant’s Employee file.

Notifications

Securities Law Information.

The Participant acknowledges that he or she is permitted to sell the Shares acquired under the Plan through the designated broker appointed by the Company, provided the sale of the Shares takes place outside of Canada through facilities of a stock exchange on which the Shares are listed (i.e., the NYSE).

Foreign Asset/Account Reporting Information.

Canadian residents are required to report to the tax authorities any foreign property on form T1135 (Foreign Income Verification Statement) if the total cost of the foreign property exceeds C$100,000 at any time in the year. The form must be filed by April 30 of the following year. Restricted Share Units must be reported-generally at a nil cost-if the C$100,000 cost threshold is exceeded because of other foreign property the Participant holds. If Shares are acquired, their cost generally is the adjusted cost base (“ACB”) of the Shares. The ACB would normally equal the fair market value of the Shares at vesting, but if the Participant owns other Shares, this ACB may have to be averaged with the ACB of the other Shares. The Participant should consult with his or her personal legal advisor to ensure compliance with applicable reporting obligations.

B-3

CHINA

Terms and Conditions

The following terms and conditions will apply to Participants who are subject to exchange control restrictions and regulations in the People’s Republic of China (“PRC”), including the requirements imposed by the State Administration of Foreign Exchange (“SAFE”), as determined by the Company in its sole discretion:

Termination of Employment.

Due to legal restrictions in China, the Participant agrees that the Company reserves the right to require the sale of any Shares acquired at vesting of the Restricted Share Units upon the termination of the Participant’s employment for any reason. The Participant hereby authorizes the sale of all Shares issued to the Participant as soon as administratively practicable after the applicable termination of employment and pursuant to this authorization. The Participant further agrees that the Company is authorized to instruct its designated broker to assist with the mandatory sale of such Shares and the Participant expressly authorizes the Company’s designated broker to complete the sale of such Shares. The Participant acknowledges that the Company’s designated broker is under no obligation to arrange for the sale of the Shares at any particular price. Upon the sale of Shares, the Participant will receive the sale proceeds less any amounts necessary to satisfy Tax-Related Items and applicable transaction fees or commissions. Due to currency exchange conversion rate fluctuation between the applicable vesting date of the Restricted Share Units and (if later) the date on which the Shares are sold, the amount of sale proceeds may be more or less than the fair market value of the Shares on the applicable vesting date (which is the relevant amount for purposes of calculating amounts necessary to satisfy applicable Tax-Related Items).

Exchange Control Restrictions.

The Participant understands and agrees that, pursuant to local exchange control requirements, the Participant will be required to immediately repatriate any cash payments or proceeds obtained with respect to participation in the Plan to the PRC. The Participant further understands that such repatriation of any cash payments or proceeds may need to be effectuated through a special exchange control account established by the Company or any Subsidiary, and the Participant hereby consents and agrees that any payment or proceeds may be transferred to such special account prior to being delivered to the Participant.

Any payment or proceeds may be paid to the Participant in U.S. dollars or local currency at the Company’s discretion. If the payments or proceeds are paid to the Participant in U.S. dollars, the Participant will be required to set up a U.S. dollar bank account in the PRC so that the payments or proceeds may be deposited into this account. If the payments or proceeds are paid to the Participant in local currency, the Company is under no obligation to secure any particular exchange conversion rate and the Company may face delays in converting the payments or proceeds to local currency due to exchange control restrictions.

The Participant further agrees to comply with any other requirements that may be imposed by the Company in the future to facilitate compliance with exchange control requirements in the PRC.

CZECH REPUBLIC

Notifications

Foreign Asset/Account Reporting Information.

Upon request of the Czech National Bank, the Participant may be required to file a report in connection with the Restricted Share Units and the opening and maintenance of a foreign account. However, because exchange control regulations change frequently and without notice, the Participant should consult with his or her personal advisor before accepting the Restricted Share Units and before opening any foreign accounts in connection with the Restricted Share Units to ensure compliance with current regulations. The Participant is solely responsible for complying with applicable Czech exchange control laws.

FINLAND

There are no country-specific provisions.

FRANCE

Terms and Conditions

B-4

Language Consent.

By accepting the Restricted Share Units and the Award Terms, which provide for the terms and conditions of the Restricted Share Units, the Participant confirms having read and understood the documents relating to this Award (the Plan and the Award Terms, including the Appendices) which were provided to the Participant in English. The Participant accepts the terms of those documents accordingly.

En acceptant l’Attribution d’Actions Attribuées et ce Contrat d’Attribution qui contient les termes et conditions des Actions Attribuées, le Participant confirme avoir lu et compris les documents relatifs à cette attribution (le Plan et le Contrat d’Attribution, ainsi que les Annexes) qui ont été transmis au Participant en langue anglaise. Le Participant accepte ainsi les conditions et termes de ces documents.

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a French resident, he or she must declare all foreign bank and brokerage accounts (including any accounts that were opened or closed during the tax year) on an annual basis on form No. 3916, together with the Participant’s income tax return. Failure to complete this reporting triggers penalties for the Participant. Further, French residents with foreign account balances exceeding €1,000,000 may have additional monthly reporting obligations.

GERMANY

Notifications

Exchange Control Information.

Cross-border payments in excess of €12,500 must be reported monthly to the German Federal Bank (Bundesbank). If the Participant makes or receives a payment in excess of this amount, the Participant must report the payment to Bundesbank electronically using the “General Statistics Reporting Portal” (“Allgemeines Meldeportal Statistik”) available via Bundesbank’s website (www.bundesbank.de).

GUINEA

Terms and Conditions

Award Settlement.

Notwithstanding any provision in the Award Terms to the contrary, if deemed by the Company to be necessary for regulatory reasons, the Company reserves the right to settle Restricted Share Units by payment in cash or its equivalent of an amount equal in value to the Shares subject to the vested Restricted Share Units.

HUNGARY

There are no country-specific provisions.

ICELAND

Terms and Conditions

Award Settlement.

Notwithstanding any provision in the Award Terms to the contrary, if deemed by the Company to be necessary for regulatory reasons, the Company reserves the right to settle Restricted Share Units by payment in cash or its equivalent of an amount equal in value to the Shares subject to the vested Restricted Share Units.

ITALY

Terms and Conditions

B-5

Authorization to Release and Transfer Necessary Personal Information. The following provision replaces in its entirety paragraph D. “Data Privacy” of Appendix A:

The Participant understands that the Employer and/or the Company may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, date of birth, social security number (or any other social or national identification number), salary, nationality, job title, number of Shares held and the details of all Restricted Share Units or any other entitlement to Shares awarded, cancelled, exercised, vested, unvested or outstanding (the “Data”) for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant is aware that providing the Company with the Participant’s Data is necessary for the performance of the Award Terms and that the Participant’s refusal to provide such Data would make it impossible for the Company to perform its contractual obligations and may affect the Participant’s ability to participate in the Plan.

The Controller of personal data processing is Arconic, Inc., 390 Park Avenue, New York City, New York, 10022 U.S.A., and, pursuant to D.lgs 196/2003, its representative in Italy is Fusina Rolling Srl, Piazza Giuseppe Missori n.2, Milano, 20122 Italy. The Participant understands that the Data may be transferred to the Company or any of its Subsidiaries, or to any third parties assisting in the implementation, administration and management of the Plan, including any transfer required to Merrill Lynch with whom Shares acquired pursuant to the vesting of the Restricted Share Units or cash from the sale of such Shares may be deposited. Furthermore, the recipients that may receive, possess, use, retain and transfer such Data for the above mentioned purposes may be located in Italy or elsewhere, including outside of the European Union and the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The processing activity, including the transfer of the Participant’s personal data abroad, outside of the European Union, as herein specified and pursuant to applicable laws and regulations, does not require the Participant’s consent thereto as the processing is necessary for the performance of contractual obligations related to the implementation, administration and management of the Plan. The Participant understands that Data processing relating to the purposes above specified shall take place under automated or non-automated conditions, anonymously when possible, that comply with the purposes for which Data are collected and with confidentiality and security provisions as set forth by applicable laws and regulations, with specific reference to D.lgs. 196/2003.

The Participant understands that Data will be held only as long as is required by law or as necessary to implement, administer and manage the Participant’s participation in the Plan. Participant understands that pursuant to art.7 of D.lgs 196/2003, the Participant has the right, including but not limited to, access, delete, update, request the rectification of the Data and cease, for legitimate reasons, the Data processing. Furthermore, the Participant is aware that the Data will not be used for direct marketing purposes. In addition, the Data provided can be reviewed and questions or complaints can be addressed by contacting a local human resources representative.

Plan Document Acknowledgement

By accepting the Restricted Share Units, the Participant acknowledges that the Participant has received a copy of the Plan and the Award Terms and has reviewed the Plan and the Award Terms, including the Appendices, in their entirety and fully understands and accepts all provisions of the Plan and the Award Terms, including the Appendices. The Participant further acknowledges that the Participant has read and specifically and expressly approves the following paragraphs of the Award Terms: paragraphs 2-5: Vesting and Payment; paragraph 15: Repayment and Forfeiture; paragraph 16: Stock Exchange Requirements and Applicable Laws; paragraph 20: Severability and Judicial Modification; paragraph 22: Appendices; paragraph 23: Imposition of Other Requirements; paragraph 27: Governing Law and Venue; paragraph A of Appendix A: Termination; paragraph C of Appendix A: Nature of Award and the Data Privacy provisions above.

Notifications

Foreign Asset/Account Reporting Information.

Italian residents who, during the fiscal year, hold investments abroad or foreign financial assets (e.g., cash, Shares) which may generate income taxable in Italy are required to report such on their annual tax returns (UNICO form, RW Schedule) or on a special form if no tax return is due. The same reporting obligations apply to Italian residents who, even if they do not directly hold investments abroad or foreign financial assets (e.g., cash, Shares), are beneficial owners of the investment pursuant to Italian money laundering provisions.

B-6

Tax on Foreign Financial Assets.

The value of the financial assets held outside of Italy by Italian residents is subject to a foreign asset tax at an annual rate of 2 per thousand (0.2%) . The taxable amount will be the fair market value of the financial assets (including Shares) assessed at the end of the calendar year. No tax payment duties arise if the amount of the foreign assets tax calculated on all financial assets held abroad does not exceed €12.

JAMAICA

There are no country-specific provisions.

JAPAN

Notifications

Foreign Asset/Account Reporting Information.

The Participant will be required to report details of any assets held outside of Japan as of December 31 (including any Shares acquired under the Plan) to the extent such assets have a total net fair market value exceeding ¥50,000,000. Such report will be due by March 15 of the following year. The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies to the Participant and whether the Participant will be required to report details of any outstanding Restricted Share Units, Shares or cash held by the Participant in the report.

KOREA

Notifications

Exchange Control Information.

Exchange control laws require Korean residents who realize US$500,000 or more from the sale of Shares or the receipt of dividends in a single transaction to repatriate the proceeds back to Korea within three years of the sale/receipt.

Foreign Asset/Account Reporting Information.

If the Participant is a Korean resident, the Participant must declare all of his or her foreign financial accounts (including any brokerage account) to the Korean tax authority and file a report with respect to such accounts if the value of such accounts exceeds KRW 1 billion (or an equivalent amount in foreign currency). The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies.

MEXICO

Terms and Conditions

Policy Statement.

The Award of Restricted Share Units is a unilateral and discretionary award and, therefore, the Company reserves the absolute right to amend it and discontinue it at any time without any liability.

The Company, with offices at 390 Park Avenue, New York City, New York, 10022 U.S.A., is solely responsible for the administration of the Plan, and participation in the Plan and the Award of the Restricted Share Units does not, in any way, establish an employment relationship between the Participant and the Company since the Participant is participating in the Plan on a wholly commercial basis and the sole employer is a Mexican Subsidiary, nor does it establish any rights between the Participant and the Employer.

Plan Document Acknowledgment.

By accepting the Restricted Share Units, the Participant acknowledges that he or she has received copies of the Plan, has reviewed the Plan and the Award Terms in their entirety, and fully understands and accepts all provisions of the Plan and the Award Terms, including the Appendices.

B-7

In addition, the Participant expressly approves that: (i) participation in the Plan does not constitute an acquired right; (ii) the Plan and participation in the Plan is offered by the Company on a wholly discretionary basis; (iii) participation in the Plan is voluntary; and (iv) neither the Company nor any Subsidiary is responsible for any decrease in the value of the Shares acquired upon vesting of the Restricted Share Units.

Finally, the Participant hereby declares that he or she does not reserve any action or right to bring any claim against the Company for any compensation or damages as a result of his or her participation in the Plan and therefore grant a full and broad release to the Employer, the Company and its other Subsidiaries with respect to any claim that may arise under the Plan.

Spanish Translation

Declaración de Política.

El Otorgamiento de Unidades de Acciones Restringidas es un otorgamiento unilateral y discrecional y, por lo tanto, la Compañía se reserva el derecho absoluto de modificar y discontinuar el Plan en cualquier tiempo, sin responsabilidad alguna.

La Compañía, con oficinas registradas ubicadas en 390 Park Avenue, New York, New York 10022 U.S.A., es únicamente responsable de la administración del Plan, y la participación en el Plan y el Otorgamiento de Unidades de Acciones Restringidas no establecen, de forma alguna, una relación de trabajo entre el Participante y la Compañía, ya que el Participante está participando en el Plan sobre una base comercial y el único patrón es una Afiliada Mexicana y tampoco establece ningún derecho entre usted y el Patrón.

Reconocimiento del Documento del Plan.

Al aceptar el Otorgamiento de las Unidades de Acciones Restringidas, el Participante reconoce que ha recibido copias del Plan, ha revisado el Plan y los Términos del Otorgamiento en su totalidad y que entiende y acepta completamente todas las disposiciones contenidas en el Plan y en los Términos del Otorgamiento, incluyendo los Apéndices.

Adicionalmente, el Participante aprueba expresamente que (i) la participación en el Plan no constituye un derecho adquirido; (ii) el Plan y la participación en el Plan se ofrecen por la Compañía de forma enteramente discrecional; (iii) la participación en el Plan es voluntaria; y (iv) la Compañía, cualquier Filial y el Patrón no son responsables por cualquier disminución en el valor de las Acciones adquiridas al momento de tener derecho en relación con las Unidades de Acciones Restringidas.

Finalmente, el Participante declara que no se reserva ninguna acción o derecho para interponer una reclamación o demanda en contra de la Compañía por compensación, daño o perjuicio alguno como resultado de su participación en el Plan y, por lo tanto, otorga el más amplio y total finiquito al Patrón, la Compañía y sus Filiales en relación con cualquier reclamación demanda que pudiera surgir de conformidad con el Plan.

NETHERLANDS

There are no country-specific provisions.

NORWAY

There are no country-specific provisions.

POLAND

Notifications

B-8

Exchange Control Information.

Polish residents holding foreign securities (including Shares) and maintaining accounts abroad (including any brokerage account) must report information to the National Bank of Poland on transactions and balances of the securities and cash deposited in such accounts if the value of such securities and cash (calculated individually or together with all other assets/liabilities held abroad) exceeds a specified threshold (currently PLN 7,000,000). If required, the reports are due on a quarterly basis on special forms available on the website of the National Bank of Poland. Further, any transfer of funds in excess of a specified threshold (currently €15,000) must be effected through a bank account in Poland. The Participant should maintain evidence of such foreign exchange transactions for five (5) years, in case of a request for their production by the National Bank of Poland.

RUSSIA

Terms and Conditions

U.S. Transaction.

The Participant understands that the grant of the Restricted Share Units is a right to receive Shares if certain conditions are met and that the offer is made by the Company in the United States. Upon vesting of the Restricted Share Units, any Shares to be issued to the Participant shall be delivered to the Participant through a brokerage account in the United States. The Participant is not permitted to sell Shares directly to other Russian legal entities or residents.

Notifications

Exchange Control Information.

Upon the sale of Shares acquired under the Plan, the Participant must repatriate the proceeds of the sale back to Russia within a reasonably short time after receipt. The Participant may remit proceeds to Participant’s foreign currency account at an authorized bank in Russia or in a foreign bank account opened in accordance with Russian exchange control laws. The Participant is encouraged to contact the Participant’s personal advisor before remitting the Participant’s sale proceeds to Russia.

Securities Law Information.

The grant of the Restricted Share Units and the distribution of the Plan and all other materials the Participant may receive regarding participation in the Plan do not constitute an offering or the advertising of securities in Russia. The issuance of Shares pursuant to the Plan has not and will not be registered in Russia and, therefore, the Shares may not be used for an offering or public circulation in Russia. In no event will Shares be delivered to the Participant in Russia; all Shares acquired under the Plan will be maintained on the Participant’s behalf in the United States.

Data Privacy Acknowledgement.

The Participant hereby acknowledges that he or she has read and understands the terms regarding collection, processing and transfer of Data contained in Appendix A to the Award Terms and by participating in the Plan, the Participant agrees to such terms. In this regard, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form to the Company or the Employer (or any other agreements or consents that may be required by the Company or the Employer) that the Company and/or the Employer may deem necessary to obtain under the data privacy laws of Russia, either now or in the future.

Labor Law Information.

If the Participant continues to hold Shares after involuntary termination, the Participant may not be eligible to receive unemployment benefits in Russia.

SOUTH AFRICA

Notifications

B-9

Tax Reporting Information.

By accepting the Restricted Share Units, the Participant agrees to notify the Employer of the amount of income realized at vesting of the Restricted Share Units. If the Participant fails to advise the Employer of the income at vesting, the Participant may be liable for a fine. The Participant will be responsible for paying any difference between the actual tax liability and the amount withheld.

Exchange Control Information.

The Participant is solely responsible for complying with applicable South African exchange control regulations. Since the exchange control regulations change frequently and without notice, the Participant should consult his or her legal advisor prior to the acquisition or sale of Shares acquired under the Plan to ensure compliance with current regulations. As it is the Participant’s responsibility to comply with South African exchange control laws, neither the Company, the Employer nor any other Subsidiary will be liable for any fines or penalties resulting from the Participant’s failure to comply with applicable laws.

SPAIN

Terms and Conditions

No Entitlement for Claims or Compensation.

The following provisions supplement paragraph A “Termination” of Appendix A.

By accepting the Restricted Share Units, the Participant consents to participation in the Plan and acknowledges that Participant has received a copy of the Plan.

The Participant understands and agrees that, as a condition of the grant of the Restricted Share Units, if the Participant’s employment terminates, unless otherwise provided in the Award Terms or by the Company, any unvested Restricted Share Units shall be forfeited without entitlement to the underlying Shares or to any amount as indemnification in the event of a termination, including, but not limited to: resignation, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’ Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985.

The Participant understands that the Company has unilaterally, gratuitously and in its sole discretion decided to grant Restricted Share Units under the Plan to individuals who may be Employees of the Company or a Subsidiary. The decision is limited and entered into based upon the express assumption and condition that any Restricted Share Units will not economically or otherwise bind the Company or any Subsidiary, including the Employer, on an ongoing basis, other than as expressly set forth in the Award Terms. Consequently, the Participant understands that the Restricted Share Units are granted on the assumption and condition that the Restricted Share Units shall not become part of any employment or service agreement (whether with the Company or any Subsidiary, including the Employer) and shall not be considered a mandatory benefit, salary for any purpose (including severance compensation) or any other right whatsoever. Furthermore, the Participant understands and freely accepts that there is no guarantee that any benefit whatsoever shall arise from the grant of Restricted Share Units, which is gratuitous and discretionary, since the future value of the Restricted Share Units and the underlying Shares is unknown and unpredictable. The Participant also understands that the grant of Restricted Share Units would not be made but for the assumptions and conditions set forth hereinabove; thus, the Participant understands, acknowledges and freely accepts that, should any or all of the assumptions be mistaken or any of the conditions not be met for any reason, the Restricted Share Unit and any right to the underlying Shares shall be null and void.

Notifications

Securities Law Information.

No “offer of securities to the public”, as defined under Spanish law, has taken place or will take place in the Spanish territory with respect to the Restricted Share Units. No public offering prospectus has been nor will be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission) (“CNMV”). Neither the Plan nor the Award Terms constitute a public offering prospectus and they have not been, nor will they be, registered with the CNMV.

B-10

Exchange Control Information.

It is the Participant’s responsibility to comply with exchange control regulations in Spain. The Participant must declare the acquisition of Shares for statistical purposes to the Spanish Direccion General de Comercio e Inversiones (the “DGCI”) of the Ministry of Economy and Competitiveness. In addition, the Participant must also file a Form D-6 with the Directorate of Foreign Transaction each January in which the Shares are owned. The sale of Shares also must be declared on Form D-6 filed with the DGCI in January, unless the sale proceeds exceed the applicable threshold (currently €1,502,530), in which case, the filing is due within one month after the sale.

Foreign Asset/Account Reporting Information.

The Participant is required to declare electronically to the Bank of Spain any securities accounts (including brokerage accounts held abroad), as well as the Shares held in such accounts if the value of the transactions during the prior tax year or the balances in such accounts as of December 31 of the prior tax year exceed €1,000,000.

Further, to the extent that the Participant holds Shares and/or has bank accounts outside Spain with a value in excess of €50,000 (for each type of asset) as of December 31, the Participant will be required to report information on such assets on his or her tax return (tax form 720) for such year. After such Shares and/or accounts are initially reported, the reporting obligation will apply for subsequent years only if the value of any previously-reported Shares or accounts increases by more than €20,000 or if the Participant sells or otherwise disposes of any previously-reported Shares or accounts.

SURINAME

Terms and Conditions

Award Settlement.

Notwithstanding any provision in the Award Terms to the contrary, if deemed by the Company to be necessary for regulatory reasons, the Company reserves the right to settle Restricted Share Units by payment in cash or its equivalent of an amount equal in value to the Shares subject to the vested Restricted Share Units.

SWITZERLAND

Notifications

Securities Law Information.

The grant of the Restricted Share Units under the Plan is considered a private offering in Switzerland and is, therefore, not subject to registration in Switzerland. Neither this document nor any other material related to the Restricted Share Units constitutes a prospectus as such term is understood pursuant to Article 652a of the Swiss Code of Obligations, and neither this document nor any other materials related to the Restricted Share Units may be publicly distributed or otherwise made publicly available in Switzerland.

UNITED KINGDOM

Terms and Conditions

Responsibility for Taxes.

The following supplements paragraph B “Responsibility for Taxes” of Appendix A:

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The Participant shall pay to the Company or the Employer any amount of income tax that the Company or the Employer may be required to account to Her Majesty’s Revenue & Customs (“HMRC”) with respect to the event giving rise to the income tax (the “Taxable Event”) that cannot be satisfied by the means described in paragraph B of Appendix A. If payment or withholding of the income tax due is not made within ninety (90) days of the end of the U.K. tax year in which the Taxable Event occurs or such other period as required under U.K. law (the “Due Date”), the Participant agrees that the amount of any uncollected income tax shall constitute a loan owed by the Participant to the Employer, effective on the Due Date. The Participant agrees that the loan will bear interest at the then-current HMRC Official Rate, it will be immediately due and repayable, and the Company or the Employer may recover it at any time thereafter by any of the means referred to in paragraph B of Appendix A. If the Participant fails to comply with his or her obligations in connection with the income tax as described in this section, the Company may refuse to deliver the Shares acquired under the Plan.

Notwithstanding the foregoing, if the Participant is a Director or executive officer of the Company (within the meaning of

Section 13(k) of the U.S. Securities Exchange Act of 1934), the Participant shall not be eligible for a loan from the Company to cover income tax. In the event that the Participant is a Director or executive officer and income tax is not collected from or paid by the Participant by the Due Date, the amount of any uncollected income tax may constitute a benefit to the Participant on which additional income tax and National Insurance contributions (“NICs”) may be payable. The Participant will be responsible for reporting and paying any income tax due on this additional benefit directly to HMRC under the self-assessment regime and for reimbursing the Company or the Employer for the value of any employee NICs due on this additional benefit, which the Company or the Employer may recover by any of the means referred to in paragraph B of Appendix A.

B-12

EX-10.DDD

Exhibit 10(ddd)

ARCONIC INC.

TERMS AND CONDITIONS FOR RESTRICTED SHARE UNITS

NON-EXECUTIVE CHAIRMAN DIRECTOR AWARD

Effective October 23, 2017

These terms and conditions, including Appendices A and B attached hereto (jointly, the "Award Terms"), are authorized by the Board of Directors (the "Board"). They are deemed to be incorporated into and form a part of the Award of Restricted Share Units issued to the Non-Executive Chairman of the Board ("Chairman") upon his appointment to such role on October 23, 2017. The Restricted Share Units are granted under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the "Plan").

Terms that are defined in the Plan have the same meanings in the Award Terms.

General Terms and Conditions

1. Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Terms. If the Plan and the Award Terms are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Terms by the Board are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant's account at Merrill Lynch's OnLine^® website www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below. Any dividend equivalents on Restricted Share Units will be paid in the same manner and at the same time as the Restricted Share Units to which they relate, as set forth in paragraph 5 below.

Vesting and Payment

2. The Restricted Share Units vest on the first anniversary date of the grant date.

3. Except as provided in paragraph 4, if the Participant's service as Chairman ceases before the Restricted Share Units vest, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death: if the Participant dies while serving as Chairman, the Award of Restricted Share Units is not forfeited but becomes fully vested as of the date of the Participant's death.

• Change in Control: to the extent that (i) a Replacement Award is not provided to the Participant following a Change in Control; or (ii) the Participant’s service is not continued by the successor or survivor corporation in connection with or following such Change in Control, the Restricted Share Units will become fully vested immediately prior to the consummation of the Change in Control subject to the Participant’s continued service as Chairman through the date of such Change in Control.

5. Payment. The Participant will receive one Share upon payment of each vested Restricted Share Unit. Payment of vested Restricted Share Units is governed by Article V of the Arconic Inc. Amended and Restated Deferred Fee Plan for Directors (the "Deferred Fee Plan"). Except as otherwise set forth in the Deferred Fee Plan, payment of vested Restricted Share Units will occur in a single lump sum upon the earlier of the Participant's "separation from service" (as defined in Section 409A of the Code and the Treasury Regulations thereunder) and the Participant's death, within the payment period specified in the Deferred Fee Plan.

Taxes

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6. The Participant acknowledges that the Participant will consult with his or her personal tax advisor regarding any income tax, social security contributions or other tax-related items ("Taxes") that arise in connection with the Restricted Share Units. The Participant is relying solely on such advisor and is not relying in any part on any statement or representation of the Company or any of its agents. The Company shall not be responsible for withholding any applicable Taxes, unless required by applicable law. The Company may take such action as it deems appropriate to ensure that all Taxes, which are the Participant’s sole and absolute responsibility, are withheld or collected from the Participant, if and to the extent required by applicable law. In this regard, the Company will have the power and the right to require the Participant to remit to the Company the amount necessary to satisfy federal, state and local taxes, U.S. or non-U.S., required by law or regulation to be withheld with respect to any taxable event arising as a result of the Restricted Share Units. Notwithstanding the foregoing, unless otherwise determined by the Board, any obligation to withhold Taxes will be met by the Company by withholding from the Shares to be issued upon payment of the Restricted Share Unit that number of Shares with a fair market value on the payment date equal to the Taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction.

Beneficiaries

7. If permitted by the Company, the Participant will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested or that have vested but have not been paid at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch's OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch's OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch's OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary's rights and interest in the Award will be transferable by the beneficiary's last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as "children," "grandchildren" etc.) will be deemed to refer to the members of the class living at the time of the Participant's death, and all members of the class will be deemed to take "per capita."

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant's legal heirs pursuant to the Participant's last will and testament or by the laws of descent and distribution.

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Adjustments

14. In the event of an Equity Restructuring, the Board will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Board will determine whether an adjustment is equitable.

Miscellaneous Provisions

15. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Terms, no Shares issuable upon vesting and payment of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

16. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Terms.

17. Notices. Any notice required or permitted under the Award Terms shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company's principal corporate offices or to the Participant at the address maintained for the Participant in the Company's records or, in either case, as subsequently modified by written notice to the other party.

18. Severability and Judicial Modification. If any provision of the Award Terms is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Terms and all other provisions shall remain valid and enforceable.

19. Successors. The Award Terms shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

20. Appendices. Notwithstanding any provisions in the Award Terms, for Participants residing and/or providing services outside the United States, the Restricted Share Unit shall be subject to the additional terms and conditions set forth in Appendix A to the Award Terms and to any special terms and conditions for the Participant's country set forth in Appendix B to the Award Terms. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, subject to compliance with Section 409A of the Code, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitute part of the Award Terms.

21. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant's participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

22. Compliance with Code Section 409A. It is intended that the Restricted Share Unit granted pursuant to the Award Terms be compliant with Section 409A of the Code and the Award Terms shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Terms and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Unit granted pursuant to the Award Terms satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have

3

no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Terms or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

23. Waiver. A waiver by the Company of breach of any provision of the Award Terms shall not operate or be construed as a waiver of any other provision of the Award Terms, or of any subsequent breach by the Participant or any other Participant.

24. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant's participation in the Plan, or the Participant's acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant's own personal tax, legal and financial advisors regarding the Participant's participation in the Plan before taking any action related to the Plan.

25. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Terms and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

26. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

27. Entire Agreement. The Award Terms and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

28. In accordance with Section 15(c) of the Plan (as in effect at the grant date), the Participant may reject the Restricted Share Unit by notifying the Company within 30 days of the grant date that he or she does not accept the Restricted Share Unit. The Participant's acceptance of the Restricted Share Unit constitutes the Participant's acceptance of and agreement with the Award Terms. Notwithstanding the foregoing, if required by the Company, the Participant will provide a signed copy of the Award Terms in such manner and within such timeframe as may be requested by the Company. The Company has no obligation to issue Shares to the Participant if the Participant does not accept the Restricted Share Unit.

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APPENDIX A

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Restricted Share Units if the Participant resides and/or provides services outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Terms and Conditions for Restricted Share Units (the "Terms and Conditions").

A. Termination. This provision supplements paragraph 3 of the Terms and Conditions.

The Company will determine when the Participant is no longer providing services for purposes of the Restricted Share Units (including whether the Participant may still be considered to be providing services while on a leave of absence).

B. Responsibility for Taxes. This provision supplements paragraph 6 of the Terms and Conditions.

The Participant acknowledges that, regardless of any action taken by the Company or any Subsidiary, the ultimate liability for all Taxes is and remains the Participant's responsibility and may exceed any amount actually withheld by the Company or any Subsidiary. The Participant further acknowledges that the Company (a) makes no representations or undertakings regarding the treatment of any Taxes in connection with any aspect of these Restricted Shares Units, including, but not limited to, the grant, vesting or payment of Restricted Shares Units, the subsequent sale of Shares acquired pursuant to the Restricted Share Unit and the receipt of any dividends or dividend equivalents; and (b) does not commit to and is under no obligation to structure the terms of the Restricted Share Units or any aspect of the Restricted Share Units to reduce or eliminate the Participant's liability for Taxes or achieve any particular tax result. The Participant shall not make any claim against the Company or any Subsidiary, or their respective board, officers or employees, related to Taxes arising from this Award. Furthermore, if the Participant has become subject to Taxes in more than one jurisdiction, the Participant acknowledges that the Company or a Subsidiary may be required to withhold or account for Taxes in more than one jurisdiction.

The Participant shall pay to the Company or any Subsidiary any amount of Taxes that the Company or any Subsidiary may be required to withhold or account for as a result of the Participant's participation in the Plan that cannot be satisfied by the means described in paragraph 6 of the Terms and Conditions. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Taxes.

C. Nature of Award. In accepting the Restricted Share Units, the Participant acknowledges, understands and agrees that:

a. the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

b. this Award of Restricted Share Units and the Participant's participation in the Plan shall not create a right to, or be interpreted as forming an employment contract with the Company;

c. the Participant's participation in the Plan is voluntary;

d. the future value of the Shares subject to the Restricted Share Unit is unknown and cannot be predicted with certainty;

e. no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Award of Restricted Share Units resulting from termination of the Participant's service as a Director (for any reason whatsoever and regardless of whether later found to be invalid or in breach of the laws of any applicable jurisdiction), and, in consideration of this Award of Restricted Share Units, the Participant irrevocably agrees never to institute any claim against the Company and any Subsidiary, waives his or her ability, if any, to bring any such claim, and releases the Company and all Subsidiaries from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Participant shall be deemed irrevocably to have agreed not to pursue such claim and agrees to execute any and all documents necessary to request dismissal or withdrawal of such claims;

f. unless otherwise provided in the Plan or by the Company in its discretion, this Award of Restricted Share Units and the benefits under the Plan evidenced by these Award Terms do not create any entitlement to have this Award of Restricted

A-1

Share Units or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

g. neither the Company nor any Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant's local currency and the United States Dollar that may affect the value of the Restricted Share Units or of any amounts due to the Participant pursuant to the Restricted Share Units or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant's personal data as described in these Award Terms and any other grant materials for the exclusive purpose of implementing, administering and managing the Participant's participation in the Plan and this Award.

The Participant understands that the Company may hold certain personal information about the Participant, including, but not limited to, the Participant's name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, nationality, any shares of stock held in the Company, details of all Restricted Share Units or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant's favor ("Data"), for the exclusive purpose of implementing, administering and managing the Plan and this Award.

The Participant understands that Data will be transferred to Merrill Lynch, Pierce, Fenner & Smith Incorporated, a Delaware corporation with its principal place of business in New York, New York ("Merrill Lynch"), and to and Hewitt Associates, a Delaware corporation with its principal place of business in Lincolnshire, Illinois ("Hewitt"), which are assisting the Company with the implementation, administration and management of the Plan and this Award. The Participant understands that the recipients of Data are located in the United States, and that the recipients' country may have different data privacy laws and protections than the Participant's country. The Participant understands that the Participant may request a list with the names and addresses of any other potential recipients of Data by contacting the Company. The Participant authorizes the Company, Merrill Lynch, Hewitt and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan and this Award to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant's participation in the Plan and this Award. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant's participation in the Plan and this Award. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Company. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant's consent, the Participant's service as a Director will not be affected; the only consequence of refusing or withdrawing the Participant's consent is that the Company would not be able to grant this Award of Restricted Share Units or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant's consent may affect the Participant's ability to participate in the Plan. For more information on the consequences of the Participant's refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Company.

E. Language. If the Participant has received these Award Terms, or any other document related to this Award of Restricted Share Units and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

F. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect his or her ability to acquire or sell Shares or rights to Shares under the Plan during such times as the Participant is considered to have "inside information" regarding the Company (as defined by applicable laws in his or her country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

A-2

G. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant's participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant's compliance.

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APPENDIX B

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Terms and Conditions for Restricted Share Units (the "Terms and Conditions").

Terms and Conditions

This Appendix B includes special terms and conditions that govern the Restricted Share Units if the Participant resides and/or provides services in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or providing services, or if the Participant transfers to another country after the grant of Restricted Share Units or is considered a resident of another country for local law purposes, the Board shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of October 2016. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant receives Shares or sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant's particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant's country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently provides services and/or resides, or if the Participant transfers to another country after the grant of the Restricted Share Unit, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

INDIA

Notifications

Exchange Control Information.

Any proceeds the Participant may receive from the sale of Shares or dividends paid with respect to such Shares must be repatriated to India according to Indian exchange control requirements. In the case of proceeds from the sale of Shares, such repatriation must occur within 90 days of receipt and in the case of dividends, such repatriation must occur within 180 days of receipt. The Participant should obtain a foreign inward remittance certificate (“FIRC”) from the bank where he or she deposits the proceeds in India as evidence of his or her compliance with the above repatriation requirements and the Participant agrees to submit a copy of the FIRC to the Reserve Bank of India, if requested.

Foreign Asset/Account Reporting Information.

If the Participant is an Indian resident he or she is required to declare the following items in his or her annual tax return: (i) any foreign assets held (including Shares acquired under the Plan), and (ii) any foreign bank accounts for which the Participant has signing authority. It is the Participant's responsibility to comply with applicable laws in India and the Participant should consult with his or her personal tax advisor to ensure that the Participant is properly reporting his or her foreign assets and bank accounts.

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UNITED KINGDOM

There are no country-specific provisions.

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EX-10.EEE

Exhibit 10(eee)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

RESTRICTED SHARE UNIT AWARD AGREEMENT

Grant Date: January 19, 2018

The terms and conditions of this Global Restricted Share Unit Award Agreement, including Appendices A and B attached hereto, (the “Award Agreement”) are authorized by the Compensation and Benefits Committee of the Board of Directors. The Restricted Share Unit award is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”). Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Restricted Share Unit award, the Participant must affirmatively accept the Award and the terms of this Award Agreement within 6 months of the grant date, as set forth in paragraph 30 of the Award Agreement.

General Terms and Conditions

1. The Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant’s account at Merrill Lynch’s OnLinewebsite www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued and paid on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below.

Vesting and Payment

2. A Restricted Share Unit vests on the third anniversary date of the grant date and will be paid to the Participant in Shares on the vesting date or within 90 days thereafter.

3. Except as provided in paragraph 4, if a Participant’s employment with the Company (including its Subsidiaries) is terminated before the Restricted Share Unit vests, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death or Disability: a Restricted Share Unit held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests and is paid on the original stated vesting date set forth in paragraph 2.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Restricted Share Unit vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Restricted Share Unit will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Restricted Share Unit will be paid to the Participant on the original stated vesting date set forth in paragraph 2.

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• Termination Following Change in Control: as further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant on the original stated vested date set forth in paragraph 2.

• Retirement: a Restricted Share Unit is not forfeited if it is held by a Participant who retires at least 6 months after the grant date under a Company or Subsidiary plan (or if there is no Company or Subsidiary plan, a government retirement plan) in which the Participant is eligible for an immediate payment of a retirement benefit. In such event, the Restricted Share Unit vests and is paid in accordance with the original vesting schedule of the grant set forth in paragraph 2. Immediate commencement of a deferred vested pension benefit under a Company or Subsidiary retirement plan is not considered a retirement for these purposes.

• Divestiture: if a Restricted Share Unit is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Chief Executive Officer of the Company, the Restricted Share Unit will not be forfeited and will vest and be paid in accordance with the original vesting schedule set forth in paragraph 2. For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

5. A Participant will receive one Share upon the vesting and payment of a Restricted Share Unit.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Restricted Share Unit must be paid by the Participant at the appropriate time under applicable tax laws. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, but will generally withhold from the Shares to be issued upon payment of the Restricted Share Unit that number of Shares with a fair market value on the vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include, for Participants subject to taxation in the United States, applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Notwithstanding the foregoing, if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended, the Company will withhold Shares from the Shares to be issued upon payment of the Restricted Share Unit, as described herein, and will not use the other means set forth in the Plan unless approved by the Committee or in the event that withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences. Further, notwithstanding anything herein to the contrary, the Company may cause a portion of the Restricted Share Units to vest prior to the stated vesting date set forth in paragraph 2 in order to satisfy any Tax-Related Items that arise prior to the date of settlement of the Restricted Share Units; provided that to the extent necessary to avoid a prohibited distribution under Section 409A of the Code, the number of Restricted Share Units so accelerated and settled shall be with respect to a number of Shares with a value that does not exceed the liability for such Tax-Related Items.

Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

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9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary’s rights and interest in the Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “per capita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, , the Committee will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that the Restricted Share Unit will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

Further, as an additional condition of receiving the Restricted Share Unit, the Participant agrees that the Restricted Share Unit and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Restricted Share Unit for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

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Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares issuable upon vesting of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

17. Non-Transferability. The Restricted Share Units are non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Agreement.

19. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

20. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

21. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Appendices. Notwithstanding any provisions in the Award Agreement, for Participants residing and/or working outside the United States, the Restricted Share Unit shall be subject to the additional terms and conditions set forth in Appendix A to the Award Agreement and to any special terms and conditions for the Participant’s country set forth in Appendix B to the Award Agreement. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitute part of the Award Agreement.

23. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

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24. Compliance with Code Section 409A. It is intended that the Restricted Share Right granted pursuant to the Award Agreement be compliant with Section 409A of the Code and the Award Agreement shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Agreement and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Right granted pursuant to the Award Agreement satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Agreement or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

25. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

26. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

27. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

28. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

29. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

30. As permitted by Section 15(c) of the Plan, receipt of this Restricted Share Unit award is subject to the Participant’s acceptance of the Award and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Award, the Participant must provide such Acceptance within 6 months of the grant date of the Award. The date as of which the Participant’s Restricted Share Unit award shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award will be cancelled in accordance with any administrative procedures adopted under the Plan.

Performance Feature

31. If the vesting of a Restricted Share Unit is subject to a performance condition, the following additional terms and conditions will apply to that Award:

• The Participant will have the right to receive from 0% to 200% of the number of Shares indicated on the grant date, based on achievement of performance goals established by the Committee for that Award.

• The performance period is three years. Attainment of performance goals for the three-year period will be determined or certified, as applicable, by the Committee on a date as soon as practicable following the end of the performance period (the “Determination Date”).

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• Notwithstanding paragraph 2 of the Award Agreement, the vesting date of the Award shall be the later of the date set forth in paragraph 2 and the Determination Date. To vest in the Award, the Participant must remain employed with the Company or a Subsidiary until such vesting date, except as otherwise set forth in paragraph 4. In any case, except where payment of the Award is made upon a Change in Control within the meaning of Treas. Reg. § 1.409-3(i)(5), in no event will payment of the Award occur outside of the time period set forth in paragraph 2.

• In the event of termination of the Participant’s employment with the Company (including its Subsidiaries) before the vesting of the Restricted Share Unit by reason of death, disability, retirement or divestiture, each as described in paragraph 4, payment of the Restricted Share Unit will be based on the extent to which the performance objectives established by the Committee have been attained following the end of the performance period.

• In the event of a Change in Control, the performance feature of the Award will cease to apply and the Award will be converted into a time-based award in accordance with the formula set forth in Section 12(a)(v) of the Plan. The vesting and payment of such Award will then be governed in accordance with paragraph 4.

• Notwithstanding anything to the contrary in the Award Agreement, if the Participant is or may be a Covered Employee, Section 13 of the Plan will be applicable to the Award to the extent that the Award qualifies for the transition rule set forth in Section 13601(e)(2) of the Tax Cuts and Jobs Act, P.L. 115-97.

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APPENDIX A

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Restricted Share Unit Award Agreement

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Restricted Share Units if the Participant resides and/or works outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Global Restricted Share Unit Award Agreement (the “Award Agreement”).

A. Termination. This provision supplements paragraph 3 of the Award Agreement.

The Company will determine when the Participant is no longer providing services for purposes of the Restricted Share Units (including whether the Participant may still be considered to be providing services while on a leave of absence).

B. Responsibility for Taxes. This provision replaces paragraph 6 of the Award Agreement (except if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended).

The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Subsidiary that employs the Participant (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of these Restricted Shares Units, including, but not limited to, the grant, vesting or settlement of Restricted Shares Units, the subsequent sale of Shares acquired pursuant to the Restricted Share Unit and the receipt of any dividends or dividend equivalents; and (b) do not commit to and are under no obligation to structure the terms of the Restricted Share Units or any aspect of the Restricted Share Units to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. The Participant shall not make any claim against the Company, the Employer or any other Subsidiary, or their respective board, officers or employees related to Tax-Related Items arising from this Award. Furthermore, if the Participant has become subject to tax in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Participant will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: (i) requiring a cash payment from the Participant; (ii) withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer, (iii) withholding from the proceeds of the sale of Shares acquired pursuant to the Restricted Share Units, either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization without further consent); and/or (iv) withholding from the Shares subject to Restricted Share Units.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant may receive a refund of any over-withheld amount in cash (with no entitlement to the Share equivalent) or, if not refunded, the Participant may seek a refund from the local tax authorities. If the obligation for Tax-Related Items is satisfied by withholding in Shares, the Participant is deemed, for tax purposes, to have been issued the full number of Shares subject to the vested Restricted Shares Units, notwithstanding that a number of the Shares is held back solely for the purpose of paying the Tax-Related Items.

Finally, the Participant shall pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Tax-Related Items.

C.    Nature of Award. In accepting the Restricted Share Units, the Participant acknowledges, understands and agrees that:

     a.    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

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     b.    this Award of Restricted Share Units is exceptional, voluntary and occasional and does not create any contractual or other right to receive future Restricted Share Units, or benefits in lieu of Restricted Share Units, even if Restricted Share Units have been granted in the past;

     c.    all decisions with respect to future Restricted Share Units or other Awards, if any, will be at the sole discretion of the Company;

     d.    this Award of Restricted Share Units and the Participant’s participation in the Plan shall not create a right to, or be interpreted as forming an employment or service contract with the Company and shall not interfere with the ability of the Employer to terminate the Participant’s employment contract (if any) at any time;

     e.    the Participant’s participation in the Plan is voluntary;

     f.    this Award of Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not intended to replace any pension rights or compensation;

g.    this Award of Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not part of normal or expected compensation or salary for any purposes, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

     h.    the future value of the Shares subject to the Restricted Share Units is unknown , indeterminable and cannot be predicted with certainty;

     i.    unless otherwise agreed with the Company, Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not granted as consideration for, or in connection with, the service the Participant may provide as a director of any Subsidiary;

     j.    no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Award of Restricted Share Units resulting from termination of the Participant’s employment and/or service relationship (for any reason whatsoever and regardless of whether later found to be invalid or in breach of applicable laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any);

     k.    unless otherwise provided in the Plan or by the Company in its discretion, this Award of Restricted Share Units and the benefits under the Plan evidenced by this Award Agreement do not create any entitlement to have this Award of Restricted Share Units or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

     l.    neither the Company, the Employer nor any other Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Restricted Share Units or of any amounts due to the Participant pursuant to the Restricted Share Units or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data as described in this Award Agreement and any other grant materials by and among, as applicable, the Company, the Employer and any other Subsidiary for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan.

The Participant understands that the Company and the Employer may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all Restricted Share Units or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

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The Participant understands that Data may be transferred to Merrill Lynch, which is assisting the Company with the implementation, administration and management of the Plan. The Participant understands that the recipients of Data may be located in the United States or elsewhere, and that the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of Data by contacting the Participant’s local human resources representative. The Participant authorizes the Company, Merrill Lynch and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Participant’s consent is that the Company would not be able to grant this Award of Restricted Share Units or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of the Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.

Finally, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form (or any other agreements or consents) that the Company and/or the Employer may deem necessary to obtain from the Participant for the purpose of administering the Participant’s participation in the Plan in compliance with the data privacy laws in the Participant’s country, either now or in the future. The Participant understands and agrees that he or she will not be able to participate in the Plan if the Participant fails to provide such consent or agreement as requested by the Company and/or the Employer.

E. Retirement. Notwithstanding paragraph 4 of the Award Agreement, if the Company receives an opinion of counsel that there has been a legal judgment and/or legal development in the Participant’s jurisdiction that would likely result in the favorable treatment applicable to the Restricted Share Units pursuant to paragraph 4 being deemed unlawful and/or discriminatory, then the Company will not apply the favorable treatment at the time of the Participant’s retirement, and the Restricted Share Units will be treated as set forth in the remaining provisions of paragraph 4 of the Award Agreement.

F. Language. The Participant acknowledges that he or she is sufficiently proficient in English to understand the terms and conditions of the Award Agreement. Furthermore, if the Participant has received this Award Agreement, or any other document related to this Award of Restricted Share Units and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

G. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, the broker’s country, or the country in which the Shares are listed, the Participant may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, which may affect his or her ability to accept, acquire, sell, or attempt to sell or otherwise dispose of Shares or rights to Shares (e.g., Restricted Share Units), or rights linked to the value of Shares, during such times as he or she is considered to have “inside information” regarding the Company (as defined by applicable laws or regulations in the applicable jurisdictions, including the United States and the Participant’s country). Local insider trading laws and regulations may prohibit the cancellation or amendment of orders the Participant placed before possessing inside information. Furthermore, the Participant may be prohibited from (i) disclosing the inside information to any third party, including fellow employees (other than on a “need to know” basis) and (ii) “tipping” third parties or causing them to otherwise buy or sell securities. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

A-3

H. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant’s participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant’s compliance.

A-4

APPENDIX B

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Restricted Share Unit Award Agreement

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Global Restricted Share Unit Award Agreement (the “Award Agreement”).

Terms and Conditions

This Appendix B includes special terms and conditions that govern Restricted Share Units if the Participant resides and/or works in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or working, or if the Participant transfers to another country after the grant of Restricted Share Units or is considered a resident of another country for local law purposes, the Committee shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of December 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant’s country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently works and/or resides, or if the Participant transfers to another country after the grant of the Restricted Share Unit, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

AUSTRALIA

Terms and Conditions

Australia Offer Document.

The grant of Restricted Share Units is intended to comply with the provisions of the Corporations Act, 2001, Australian Securities & Investments Commission (“ASIC”) Regulatory Guide 49 and ASIC Class Order 14/1000. Additional details are set forth in the Offer Document to Australian resident employees, which is being provided to the Participant with the Award Agreement.

Notifications

Exchange Control Information.

Exchange control reporting is required for cash transactions exceeding A$10,000 and for international fund transfers. If an Australian bank is assisting with the transaction, the bank will file the report on the Participant’s behalf.

Tax Information.

B-1

The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to conditions in the Act).

AUSTRIA

Notifications

Exchange Control Information.

If the Participant holds Shares obtained through the Plan outside of Austria, the Participant must submit a report to the Austrian National Bank. An exemption applies if the value of the Shares as of any given quarter does not meet or exceed €30,000,000 or as of December 31 does not meet or exceed €5,000,000. If the former threshold is exceeded, quarterly obligations are imposed, whereas if the latter threshold is exceeded, annual reports must be given. If quarterly reporting is required, the reports must be filed by the fifteenth day of the month following the last day of the respective quarter. The annual reporting date is December 31 and the deadline for filing the annual report is January 31 of the following year.

When Shares are sold or cash dividends or dividend equivalent payments are received, there may be exchange control obligations if the cash received is held outside Austria. If the transaction volume of all the Participant’s accounts abroad meets or exceeds €10,000,000, the movements and balances of all accounts must be reported monthly, as of the last day of the month, on or before the fifteenth of the following month.

BELGIUM

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a Belgian resident, the Participant is required to report any bank accounts opened and maintained outside of Belgium (e.g., brokerage accounts opened in connection with the Plan) on his or her annual tax return. In a separate report, the Participant is required to provide the National Bank of Belgium with certain details regarding such foreign accounts (including the account number, bank name and country in which any such account was opened). This report, as well as additional information on how to complete it, can be found on the website of the National Bank of Belgium, www.nbb.be, under Kredietcentrales / Centrales des crédits caption. The Participant should consult with his or her personal tax advisor to determine his or her personal reporting obligations.

Stock Exchange Tax.

From January 1, 2017, a stock exchange tax applies to transactions executed through a non-Belgian financial intermediary. The stock exchange tax likely will apply when the Shares are sold. The Participant should consult with his or her personal tax advisor to determine his or her obligations with respect to the stock exchange tax.

BRAZIL

Terms and Conditions

Compliance with Law.

By accepting the Restricted Share Units, the Participant acknowledges that he or she agrees to comply with applicable Brazilian laws and to pay any and all applicable taxes associated with the vesting of the Restricted Share Units, the sale of the Shares acquired under the Plan and the receipt of any dividends.

Acknowledgement of Nature of the Grant.

This provision supplements paragraph C “Nature of Award” of Appendix A:

By accepting the Restricted Share Units, the Participant agrees that he or she is making an investment decision, the Shares will be issued to the Participant only if the vesting conditions are met and any necessary services are rendered by the Participant over the vesting period, and the value of the underlying Shares is not fixed and may increase or decrease in value over the vesting period without compensation to the Participant.

B-2

Notifications

Exchange Control Information.

If the Participant is a resident of or domiciled in Brazil, he or she will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of the assets and rights is equal to or greater than US$100,000. If such amount exceeds US$100,000,000, the declaration must be submitted quarterly. Assets and rights that must be reported include Shares acquired under the Plan.

Tax on Financial Transactions (IOF).

Repatriation of funds (e.g., sale proceeds) into Brazil and the conversion of USD into BRL associated with such fund transfers may be subject to the Tax on Financial Transactions. It is the Participant’s responsibility to comply with any applicable Tax on Financial Transactions arising from the Participant’s participation in the Plan. The Participant should consult with his or her personal tax advisor for additional details.

CANADA

Terms and Conditions

Award Settled Only in Shares.

Notwithstanding any discretion in the Plan, the Award of Restricted Share Units shall be settled in Shares only. The Participant is not entitled to receive a cash payment pursuant to the Award.

Termination of Service.

The following provision replaces paragraph A “Termination” of Appendix A:

For purposes of the Restricted Share Units, the Participant’s employment relationship will be considered terminated (regardless of the reason for such termination and whether or not later found to be invalid or in breach of Canadian laws or the terms of the Participant’s employment agreement, if any) effective as of the date that is the earlier of (i) the date of the Participant’s termination, (ii) the date the Participant receives notice of termination, or (iii) the date the Participant is no longer actively providing service and will not be extended by any notice period (e.g., active service would not include any contractual notice period or any period of “garden leave” or similar period mandated under Canadian laws or the terms of the Participant’s employment agreement, if any). Unless otherwise expressly provided in this Award Agreement or determined by the Company, the Participant’s right to vest in the Restricted Share Units, if any, will terminate on such date. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing service for purposes of the Restricted Share Unit (including whether the Participant may still be considered to be providing services while on a leave of absence).

The Following Provisions Apply for Participants Resident in Quebec:

Consent to Receive Information in English.

The Participant acknowledges that it is the express wish of the parties that this Award Agreement, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be written in English.

Les parties reconnaissent avoir exigé la rédaction en anglais de Conditions d’attribution, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement à, la présente convention.

Authorization to Release and Transfer Necessary Personal Information.

The following provision supplements paragraph D “Data Privacy” of Appendix A:

B-3

The Participant hereby authorizes the Company and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the administration and operation of the Plan. The Participant further authorizes the Company, any Subsidiary and the administrator of the Plan to disclose and discuss the Plan with their advisors. The Participant further authorizes the Company and any Subsidiary to record such information and to keep such information in the Participant’s Employee file.

Notifications

Securities Law Information.

The Participant acknowledges that he or she is permitted to sell the Shares acquired under the Plan through the designated broker appointed by the Company, provided the sale of the Shares takes place outside of Canada through facilities of a stock exchange on which the Shares are listed (i.e., the NYSE).

Foreign Asset/Account Reporting Information.

Canadian residents are required to report to the tax authorities certain foreign property (included Restricted Share Units) on form T1135 (Foreign Income Verification Statement) if the total cost of the foreign property exceeds C$100,000 at any time in the year. The form must be filed by April 30 of the following year. Restricted Share Units must be reported-generally at a nil cost-if the C$100,000 cost threshold is exceeded because of other foreign property the Participant holds. If Shares are acquired, their cost generally is the adjusted cost base (“ACB”) of the Shares. The ACB would normally equal the fair market value of the Shares at vesting, but if the Participant owns other Shares, this ACB may have to be averaged with the ACB of the other Shares. The Participant should consult with his or her personal legal advisor to ensure compliance with applicable reporting obligations.

CHINA

Terms and Conditions

The following terms and conditions will apply to Participants who are subject to exchange control restrictions and regulations in the People’s Republic of China (“the PRC”), including the requirements imposed by the State Administration of Foreign Exchange (“SAFE”), as determined by the Company in its sole discretion:

Termination of Employment.

Due to exchange control laws in the PRC, the Participant agrees that the Company reserves the right to require the sale of any Shares acquired at vesting of the Restricted Share Units upon the termination of the Participant’s employment for any reason. If the Company, in its discretion, does not exercise its right to require the automatic sale of Shares issuable upon vesting of the Restricted Share Units, as described in the preceding sentence, the Participant understands and agrees that any Shares acquired by the Participant under the Plan must be sold no later than six (6) months after termination of the Participant’s employment, or within any other such time frame as permitted by the Company or required by SAFE. The Participant understands that any Shares acquired under the Plan that have not been sold within six (6) months of the Participant’s termination of employment will be automatically sold by a designated broker at the Company’s discretion, pursuant to this authorization by the Participant.

The Participant agrees that the Company is authorized to instruct its designated broker to assist with the mandatory sale of such Shares (on the Participant’s behalf, pursuant to this authorization) and the Participant expressly authorizes the Company’s designated broker to complete the sale of such Shares. The Participant also agrees to sign any agreements, forms, and/or consents that may be reasonably requested by the Company (or the designated broker) to effectuate the sale of the Shares (including, without limitation, as to the transfers of the proceeds and other exchange control matters noted below) and shall otherwise cooperate with the Company with respect to such matters, provided that the Participant shall not be permitted to exercise any influence over how, when or whether the sales occur. The Participant acknowledges that the Company’s designated broker is under no obligation to arrange for the sale of the Shares at any particular price. Due to fluctuations in the Share price and/or applicable exchange rates between vesting and (if later) the date on which the Shares are sold, the amount of proceeds ultimately distributed to the Participant may be more or less than the market value of the Shares upon vesting (which is the amount relevant to determining the Participant’s liability for Tax-Related Items). The Participant understands and agrees that the Company is not responsible for the amount of any loss the Participant may incur and the Company assumes no liability for any fluctuations in the Share price and/or any applicable exchange rate.

B-4

Upon the sale of the Shares, the Company agrees to pay the cash proceeds from the sale (less any Tax-Related Items, brokerage fees and commissions) to the Participant in accordance with the applicable exchange control laws and regulations including but not limited to the restrictions set forth in this Appendix B for China below under “Exchange Control Restrictions.”

Exchange Control Restrictions.

The Participant understands and agrees that, pursuant to local exchange control requirements, the Participant will be required to immediately repatriate any cash payments or proceeds obtained with respect to participation in the Plan to the PRC. The Participant further understands that such repatriation of any cash payments or proceeds may need to be effectuated through a special exchange control account established by the Company or any Subsidiary, and the Participant hereby consents and agrees that any payment or proceeds may be transferred to such special account prior to being delivered to the Participant. Any payment or proceeds may be paid to the Participant in U.S. dollars or local currency at the Company’s discretion. If the payments or proceeds are paid to the Participant in U.S. dollars, the Participant will be required to set up a U.S. dollar bank account in the PRC (if the Participant does not already have one) so that the payments or proceeds may be deposited into this account. If the payments or proceeds are paid to the Participant in local currency, the Company is under no obligation to secure any particular currency exchange rate and the Company may face delays in converting the payments or proceeds to local currency due to exchange control restrictions. The Participant agrees to bear any currency exchange rate fluctuation risk between the time the cash proceeds are received and the time the cash proceeds are distributed to the Participant through the special account described above.

The Participant further agrees to comply with any other requirements that may be imposed by the Company in the future to facilitate compliance with exchange control requirements in the PRC.

Notifications

Exchange Control Information.

PRC residents may be required to report to SAFE all details of their foreign financial assets and liabilities, as well as details of any economic transactions conducted with non-PRC residents.

FRANCE

Terms and Conditions

Language Consent.

By accepting the Restricted Share Units and the Award Agreement, which provides for the terms and conditions of the Restricted Share Units, the Participant confirms having read and understood the documents relating to this Award (the Plan and the Award Agreement, including the Appendices) which were provided to the Participant in English. The Participant accepts the terms of those documents accordingly.

En acceptant l’Attribution d’Actions Attribuées et ce Contrat d’Attribution qui contient les termes et conditions des Actions Attribuées, le Participant confirme avoir lu et compris les documents relatifs à cette attribution (le Plan et le Contrat d’Attribution, ainsi que les Annexes) qui ont été transmis au Participant en langue anglaise. Le Participant accepte ainsi les conditions et termes de ces documents.

Notifications

Tax Information.

The Restricted Share Units are not intended to be French tax-qualified awards.

Foreign Asset/Account Reporting Information.

French residents are required to report all foreign accounts (whether open, current or closed) to the French tax authorities when filing their annual tax returns. The Participant should consult his or her personal advisor to ensure compliance with applicable reporting obligations.

GERMANY

B-5

Notifications

Exchange Control Information.

If the Participant receives cross-border payments in excess of €12,500 in connection with the sale of securities (including Shares acquired under the Plan) or the receipt of any dividends or dividend equivalent payments, such payment must be reported monthly to the German Federal Bank (Bundesbank).  The Participant is responsible for the reporting obligation and should file the report electronically by the fifth day of the month following the month in which the payment is made. A copy of the report (“Allgemeines Meldeportal Statistik”) can be accessed via Bundesbank’s website (www.bundesbank.de) and is available in both German and English.

HUNGARY

There are no country-specific provisions.

INDIA

Notifications

Exchange Control Information.

Indian residents are required to repatriate to India all proceeds received from the sale of Shares within 90 days of receipt and any dividends or dividend equivalent payments within 180 days of receipt, or within such other period of time as may be required under applicable regulations. The Participant must maintain the foreign inward remittance certificate received from the bank where the foreign currency is deposited in the event that the Reserve Bank of India or the Company requests proof of repatriation. It is the Participant’s responsibility to comply with applicable exchange control laws in India.

Foreign Asset/Account Reporting Information.

The Participant is required to declare any foreign bank accounts and any foreign financial assets (including Shares held outside India) in the Participant’s annual tax return. The Participant is responsible for complying with this reporting obligation and should confer with his or her personal tax advisor in this regard.

JAPAN

Notifications

Foreign Asset/Account Reporting Information.

The Participant will be required to report details of any assets held outside of Japan as of December 31 (including any Shares acquired under the Plan) to the extent such assets have a total net fair market value exceeding ¥50,000,000. Such report will be due by March 15 of the following year. The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies to the Participant and whether the Participant will be required to report details of any outstanding Restricted Share Units, Shares or cash held by the Participant in the report.

KOREA

Notifications

Exchange Control Information.

Exchange control laws require Korean residents who realized US$500,000 or more from the sale of Shares or the receipt of dividends in a single transaction before July 18, 2017 to repatriate the proceeds back to Korea within three years of the sale/receipt.

Foreign Asset/Account Reporting Information.

B-6

If the Participant is a Korean resident, the Participant must declare all of his or her foreign financial accounts (including any brokerage account) to the Korean tax authority and file a report with respect to such accounts if the value of such accounts exceeds KRW 1 billion (or an equivalent amount in foreign currency). The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies.

MEXICO

Terms and Conditions

Policy Statement.

The Award of Restricted Share Units is a unilateral and discretionary award and, therefore, the Company reserves the absolute right to amend it and discontinue it at any time without any liability.

The Company, with offices at 390 Park Avenue, New York City, New York, 10022 U.S.A., is solely responsible for the administration of the Plan, and participation in the Plan and the Award of the Restricted Share Units does not, in any way, establish an employment relationship between the Participant and the Company since the Participant is participating in the Plan on a wholly commercial basis and the sole employer is a Mexican Subsidiary, nor does it establish any rights between the Participant and the Employer.

Plan Document Acknowledgment.

By accepting the Restricted Share Units, the Participant acknowledges that he or she has received copies of the Plan, has reviewed the Plan and the Award Agreement in their entirety, and fully understands and accepts all provisions of the Plan and the Award Agreement, including the Appendices.

In addition, the Participant expressly approves that: (i) participation in the Plan does not constitute an acquired right; (ii) the Plan and participation in the Plan is offered by the Company on a wholly discretionary basis; (iii) participation in the Plan is voluntary; and (iv) neither the Company nor any Subsidiary is responsible for any decrease in the value of the Shares acquired upon vesting of the Restricted Share Units.

Finally, the Participant hereby declares that he or she does not reserve any action or right to bring any claim against the Company for any compensation or damages as a result of his or her participation in the Plan and therefore grant a full and broad release to the Employer, the Company and its other Subsidiaries with respect to any claim that may arise under the Plan.

Spanish Translation

Declaración de Política.

El Otorgamiento de Unidades de Acciones Restringidas es un otorgamiento unilateral y discrecional y, por lo tanto, la Compañía se reserva el derecho absoluto de modificar y discontinuar el Plan en cualquier tiempo, sin responsabilidad alguna.

La Compañía, con oficinas registradas ubicadas en 390 Park Avenue, New York, New York 10022 U.S.A., es únicamente responsable de la administración del Plan, y la participación en el Plan y el Otorgamiento de Unidades de Acciones Restringidas no establecen, de forma alguna, una relación

de trabajo entre el Participante y la Compañía, ya que el Participante está participando en el Plan sobre una base comercial y el único patrón es una Afiliada Mexicana y tampoco establece ningún derecho entre usted y el Patrón.

Reconocimiento del Documento del Plan.

Al aceptar el Otorgamiento de las Unidades de Acciones Restringidas, el Participante reconoce que ha recibido copias del Plan, ha revisado el Plan y los Términos del Otorgamiento en su totalidad y que entiende y acepta completamente todas las disposiciones contenidas en el Plan y en los Términos del Otorgamiento, incluyendo los Apéndices.

Adicionalmente, el Participante aprueba expresamente que (i) la participación en el Plan no constituye un derecho adquirido; (ii) el Plan y la participación en el Plan se ofrecen por la Compañía de forma enteramente discrecional; (iii) la participación en el Plan es voluntaria; y (iv) la Compañía, cualquier Filial y el Patrón no son responsables por cualquier disminución en el valor de las Acciones adquiridas al momento de tener derecho en relación con las Unidades de Acciones Restringidas.

B-7

Finalmente, el Participante declara que no se reserva ninguna acción o derecho para interponer una reclamación o demanda en contra de la Compañía por compensación, daño o perjuicio alguno como resultado de su participación en el Plan y, por lo tanto, otorga el más amplio y total finiquito al Patrón, la Compañía y sus Filiales en relación con cualquier reclamación demanda que pudiera surgir de conformidad con el Plan.

NETHERLANDS

There are no country-specific provisions.

RUSSIA

Terms and Conditions

U.S. Transaction.

The Participant understands that the grant of the Restricted Share Units is a right to receive Shares if certain conditions are met and that the offer is made by the Company in the United States. Upon vesting of the Restricted Share Units, any Shares to be issued to the Participant shall be delivered to the Participant through a brokerage account in the United States. The Participant is not permitted to sell Shares directly to other Russian legal entities or residents.

Notifications

Exchange Control Information.

Under current exchange control regulations, within a reasonably short time after the sale of Shares acquired upon vesting of the Restricted Share Units or the receipt of dividend equivalent payments, the Participant is required to repatriate such funds received in connection with the Plan to the Participant’s bank account in Russia prior to using those proceeds for any purpose including reinvestments. Such proceeds must be initially credited to the Participant through a foreign currency account at an authorized bank in Russia. After the proceeds are initially received in Russia, they may be further remitted to foreign banks in accordance with Russian exchange control laws. The Participant is strongly encouraged to contact the Participant’s personal advisor to confirm the applicable Russian exchange control rules because significant penalties may apply in the case of non-compliance and because exchange control requirements may change.

Securities Law Information.

The grant of the Restricted Share Units and the distribution of the Plan and all other materials the Participant may receive regarding participation in the Plan do not constitute an offering or the advertising of securities in Russia. The issuance of Shares pursuant to the Plan has not and will not be registered in Russia and, therefore, the Shares may not be used for an offering or public circulation in Russia. In no event will Shares be delivered to the Participant in Russia; all Shares acquired under the Plan will be maintained on the Participant’s behalf in the United States.

Data Privacy Acknowledgement.

The Participant hereby acknowledges that he or she has read and understands the terms regarding collection, processing and transfer of Data contained in Appendix A to the Award Agreement and by participating in the Plan, the Participant agrees to such terms. In this regard, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form to the Company or the Employer (or any other agreements or consents that may be required by the Company or the Employer) that the Company and/or the Employer may deem necessary to obtain under the data privacy laws of Russia, either now or in the future.

Labor Law Information.

If the Participant continues to hold Shares after involuntary termination, the Participant may not be eligible to receive unemployment benefits in Russia.

Anti-Corruption Legislation Information.

B-8

Individuals holding public office in Russia, as well as their spouses and dependent children, may be prohibited from opening or maintaining a foreign brokerage or bank account and holding any securities, whether acquired directly or indirectly, in a foreign company (including Shares acquired under the Plan). The Participant is strongly advised to consult with his or her personal legal advisor to determine whether the restriction applies to the Participant.

SPAIN

Terms and Conditions

No Entitlement for Claims or Compensation.

The following provisions supplement paragraph A “Termination” of Appendix A.

By accepting the Restricted Share Units, the Participant consents to participation in the Plan and acknowledges that Participant has received a copy of the Plan.

The Participant understands and agrees that, as a condition of the grant of the Restricted Share Units, if the Participant’s employment terminates, unless otherwise provided in the Award Agreement or by the Company, any unvested Restricted Share Units shall be forfeited without entitlement to the underlying Shares or to any amount as indemnification in the event of a termination, including, but not limited to: resignation, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’ Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985.

The Participant understands that the Company has unilaterally, gratuitously and in its sole discretion decided to grant Restricted Share Units under the Plan to individuals who may be Employees of the Company or a Subsidiary. The decision is limited and entered into based upon the express assumption and condition that any Restricted Share Units will not economically or otherwise bind the Company or any Subsidiary, including the Employer, on an ongoing basis, other than as expressly set forth in the Award Agreement. Consequently, the Participant understands that the Restricted Share Units are granted on the assumption and condition that the Restricted Share Units shall not become part of any employment or service agreement (whether with the Company or any Subsidiary, including the Employer) and shall not be considered a mandatory benefit, salary for any purpose (including severance compensation) or any other right whatsoever. Furthermore, the Participant understands and freely accepts that there is no guarantee that any benefit whatsoever shall arise from the grant of Restricted Share Units, which is gratuitous and discretionary, since the future value of the Restricted Share Units and the underlying Shares is unknown and unpredictable. The Participant also understands that the grant of Restricted Share Units would not be made but for the assumptions and conditions set forth hereinabove; thus, the Participant understands, acknowledges and freely accepts that, should any or all of the assumptions be mistaken or any of the conditions not be met for any reason, the Restricted Share Unit and any right to the underlying Shares shall be null and void.

Notifications

Securities Law Information.

No “offer of securities to the public”, as defined under Spanish law, has taken place or will take place in the Spanish territory with respect to the Restricted Share Units. No public offering prospectus has been nor will be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission) (“CNMV”). Neither the Plan nor the Award Agreement constitute a public offering prospectus and they have not been, nor will they be, registered with the CNMV.

Exchange Control Information.

It is the Participant’s responsibility to comply with exchange control regulations in Spain. The Participant must declare the acquisition of Shares for statistical purposes to the Spanish Direccion General de Comercio e Inversiones (the “DGCI”) of the Ministry of Economy and Competitiveness. In addition, the Participant must also file a Form D-6 with the Directorate of Foreign Transaction each January in which the Shares are owned. The sale of Shares also must be declared on Form D-6 filed with the DGCI in January, unless the sale proceeds exceed the applicable threshold (currently €1,502,530), in which case, the filing is due within one month after the sale.

Foreign Asset/Account Reporting Information.

B-9

The Participant is required to declare electronically to the Bank of Spain any securities accounts (including brokerage accounts held abroad), as well as the Shares held in such accounts if the value of the transactions during the prior tax year or the balances in such accounts as of December 31 of the prior tax year exceed €1,000,000.

Further, to the extent that the Participant holds Shares and/or has bank accounts outside Spain with a value in excess of €50,000 (for each type of asset) as of December 31, the Participant will be required to report information on such assets on his or her tax return (tax form 720) for such year. After such Shares and/or accounts are initially reported, the reporting obligation will apply for subsequent years only if the value of any previously-reported Shares or accounts increases by more than €20,000 or if the Participant sells or otherwise disposes of any previously-reported Shares or accounts.

SWITZERLAND

Notifications

Securities Law Information.

The grant of the Restricted Share Units under the Plan is considered a private offering in Switzerland and is, therefore, not subject to registration in Switzerland. Neither this document nor any other material related to the Restricted Share Units constitutes a prospectus as such term is understood pursuant to Article 652a of the Swiss Code of Obligations, and neither this document nor any other materials related to the Restricted Share Units may be publicly distributed or otherwise made publicly available in Switzerland. Neither this document nor any other offering or marketing materials relating to the Restricted Share Units have been or will be filed with, approved or supervised by any Swiss regulatory authority (in particular, the Swiss Financial Market Supervisory Authority (FINMA)).

UNITED KINGDOM

Terms and Conditions

Responsibility for Taxes.

The following supplements paragraph B “Responsibility for Taxes” of Appendix A:

Without limitation to paragraph B “Responsibility for Taxes” of Appendix A, the Participant agrees that the Participant is liable for all Tax-Related Items and hereby covenants to pay all such Tax-Related Items as and when requested by the Company or the Employer or by Her Majesty’s Revenue & Customs (“HMRC”) (or any other tax authority or any other relevant authority). The Participant also agrees to indemnify and keep indemnified the Company and the Employer against any Tax-Related Items that they are required to pay or withhold or have paid or will have to pay to HMRC (or any other tax authority or any other relevant authority) on the Participant’s behalf.

Notwithstanding the foregoing, if the Participant is a Director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934), the Participant may not be able to indemnify the Company or the Employer for the amount of any income tax not collected from or paid by the Participant, as it may be considered a loan. In this case, the amount of any uncollected income tax may constitute a benefit to the Participant on which additional income tax and employee National Insurance contributions (“NICs”) may be payable. The Participant agrees to report and pay any income tax due on this additional benefit directly to HMRC under the self-assessment regime and to pay the Employer for the value of the employee NICs due on this additional benefit, which the Company or the Employer may recover from the Participant by any of the means referred to in the Award Agreement, including the Appendices.

B-10

EX-10.FF

Exhibit 10(ff)

Alcoa Inc.

390 Park Avenue

New York, NY 10022-4608 USA

Tel: 1 212 836 2600

July 28, 2016

Katherine E. Ramundo

1 Sussex Avenue

Bronxville, NY 10708

Dear Kate,

As we have discussed, and on behalf of Alcoa, I am pleased to offer you the position of EVP, Chief Legal Officer and Corporate Secretary Designate, Arconic reporting to Klaus Kleinfeld, Chairman and Chief Executive Officer, and based in New York, NY. Upon separation of Alcoa into two companies (“Separation”), your position will be part of Arconic. You will be elected an Officer of the company, pending Board approval, upon Separation or no later than November 1, 2016.

The total compensation package includes annual targeted salary and substantial additional long-term compensation opportunities as summarized below.

Salary:

Annual salary will be $550,000, paid on a monthly basis. Your annual salary shall be subject to review for increase, but not decreased without your express written consent.

Incentive Compensation:

You will be eligible for target annual Incentive Compensation of 100% of your base salary, or $550,000 for a full year, if targets are met. Actual payouts could be higher or lower than target depending on individual and business performance. For 2016, you shall be paid: a pro rata Incentive Compensation amount based on the number of days you are employed by the company in 2016; an amount calculated on the Corporate results and no less than 100% of the Individual Incentive Compensation multiplier.

Annual Equity Awards:

You will be eligible for an annual equity award as part of the normal grant cycle starting in January, 2017. Your target grant for 2017 will be $1,200,000 and will be subject to the provisions of the Alcoa Stock Incentive Plan at the time of grant. Of this, 80% will be granted as performance-based restricted stock units and 20% as time-vested equity awards in the form of either stock options and/or restricted stock units. The design of the program is reviewed each year and is subject to change.

Sign-On Equity Awards:

• You will receive a special one-time equity award of $400,000 restricted stock units with the grant date set as soon as administratively feasible after your start date. This award will vest three years from the date of the grant.

• The foregoing award will be subject to the provisions of the Alcoa Stock Incentive Plan at the time of grant.

Sign-On Cash Bonus:

You will receive a special sign-on cash bonus of $200,000, less any applicable tax withholding, payable as soon as administratively feasible after your start date. Should you voluntarily terminate your employment with the company for any reason within three years of receipt of this payment, you agree to reimburse the company pro-rata for the time after your date of termination not worked within three years of hire.

Equity Ownership Requirements:

Consistent with Alcoa’s efforts to align the company’s senior leadership with the interests of Alcoa shareholders, the Board of Directors has adopted requirements on equity ownership for senior Alcoa executives. The equity ownership requirement for executives at your level is currently 3 times base salary. Until equity ownership requirements are met, you are required to retain 50% of shares acquired upon vesting of restricted/performance shares or upon exercise of stock options, after deducting those used to pay for applicable taxes or the exercise price.

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Benefits:

You will be eligible to participate in all Alcoa employee benefit plans offered at your location, including health care, life insurance, and disability coverage. Details of these plans will be sent to you separately. You will be eligible for Directors and Officers liability insurance and change in control severance benefits upon your election as an Officer of the company.

Retirement Savings Plan:

Alcoa offers a tax qualified 401(k) savings plan and a non-qualified deferred compensation plan to help you save toward retirement. Details will be sent to you separately and are subject to plan terms and conditions. Current company contributions are:

• 3% of your base salary and incentive compensation, and

• a match of your deferred pre-tax savings dollar-for-dollar up to 6% of your base pay.

Vacation:

You will be eligible for not less than 4 weeks of paid vacation per year, in addition to company recognized holidays.

Legal Fees:

The company will pay to your legal counsel the reasonable costs associated with the fees and disbursement for legal counsel on your behalf associated with negotiation of your employment agreement and related documents with the company, provided such amount shall not exceed $25,000.

Severance in the event of Involuntary Termination:

In the event that your employment with the Company is involuntarily terminated prior to the date of the Separation, due to reasons other than Cause, as hereinafter defined, you will be entitled to Severance. Severance shall be a lump sum payment of one year of base salary as of the termination date and is subject to applicable payroll tax withholding. In keeping with established practices, you will be required to execute a waiver of claims (which shall be negotiated based on the form attached hereto) in order to receive the Severance.

If you are involuntarily terminated without Cause, as hereinafter defined, post-Separation, the company will work with you in good faith to reach an equitable transition and severance arrangement.

For purposes of this letter, “Cause” shall mean any misconduct committed by you that is materially injurious to the Company, such as: any willful continued failure to substantially perform your duties to the Company; gross incompetence or repeated poor performance; substantial insubordination, or any inappropriate conduct of a negative or disparaging nature; any material dishonesty in the performance of your duties to the Company; fraud, embezzlement, theft, or misappropriation of Company resources; conviction of a misdemeanor involving moral turpitude or conviction of any felony; acute conflict of interest or willful violation of Company policy.

This offer is contingent upon the following conditions:

• Having successfully completed a pre-employment drug screen. You will need to present a photo ID at the time of your screening.

• Providing authorization and release for Alcoa to conduct a comprehensive review of your background, the result of which is satisfactory to Alcoa. The authorization and release will also be valid for subsequent reports during your period of employment with Alcoa.

• Providing us with documentation in the original form establishing both your identity and your employment eligibility in the U.S.

• Signing the attached Employment Agreement.

• Signing the attached Non-Compete Agreement.

Notwithstanding anything in the Employment Agreement or Non-Compete Agreement to the contrary, in the event of a conflict between the Employment Agreement and/or the Non-Compete Agreement and this offer letter, this offer letter shall control and, in this regard, the Employment Agreement and/or the Non-Compete Agreement do not supersede this offer letter.

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Upon termination of employment you shall be permitted to retain your personal papers, calendar, contacts/rolodexes, information relating to your compensation and materials you reasonably believe are necessary for tax purposes. In addition, you may disclose Confidential Information (as defined in the Employment Agreement) if requested by a court or by a governmental or regulatory agency in connection with an investigation or if reasonably appropriate to be disclosed in any litigation between you and the company.

This offer letter (and the Employment Agreement) shall be governed and interpreted in accordance with the laws of the State of New York without reference to its choice of law principles. Any action arising out of or related to this Agreement will be brought in the state or Federal courts located in New York, and you and the company consent to the jurisdiction.

We believe that you have the leadership competencies and experience to make a significant contribution to the success of our company. We look forward to your positive contributions to our future. To accept our offer, please sign and date the bottom of this letter and return it to Nancy Dugan (nancy.dugan@alcoa.com) by July 28, 2016. If you have any questions please feel free to contact either Nancy or me.

I look forward to hearing from you soon, and I hope to have the opportunity to officially welcome you to Alcoa!

Sincerely,

Alcoa Inc.

/s/ Vas Nair

________________________________________

Vas Nair, EVP - HR, EHS & Sustainability

Cc: Klaus Kleinfeld, Chairman and Chief Executive Officer

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Attachments

I, Katherine Ramundo, am pleased to accept your offer of employment dated July 28, 2016 for the position of EVP, Chief Legal Officer and Corporate Secretary Designate, Arconic on the terms detailed in the offer letter.

I would like my start date with Alcoa to be: September 7, 2016 and will fulfill the foregoing conditions before then.

Accepted by:                    Date:

/s/ Katherine Ramundo___________     July 28, 2016

Katherine Ramundo

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EX-10.FFF

Exhibit 10(fff)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

TERMS AND CONDITIONS FOR RESTRICTED SHARE UNITS

Effective January 19, 2018

These terms and conditions, including Appendices A and B attached hereto, (the “Award Terms”) are authorized by the Compensation and Benefits Committee of the Board of Directors. They are deemed to be incorporated into and form a part of every Award of Restricted Share Units issued on or after January 19, 2018 under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”), with the exception of any Award of Restricted Share Units that is issued pursuant to a specific award agreement.

Terms that are defined in the Plan have the same meanings in the Award Terms.

General Terms and Conditions

1. Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Terms. If the Plan and the Award Terms are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Terms by the Committee are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant’s account at Merrill Lynch’s OnLinewebsite www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued and paid on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below.

Vesting and Payment

2. A Restricted Share Unit vests on the third anniversary date of the grant date and will be paid to the Participant in Shares on the vesting date or within 90 days thereafter.

3. Except as provided in paragraph 4, if a Participant’s employment with the Company (including its Subsidiaries) is terminated before the Restricted Share Unit vests, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death or Disability: a Restricted Share Unit held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests and is paid on the original stated vesting date set forth in paragraph 2.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Restricted Share Unit vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Restricted Share Unit will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Restricted Share Unit will be paid to the Participant on the original stated vesting date set forth in paragraph 2.

• Termination Following Change in Control: as further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant on the original stated vested date set forth in paragraph 2.

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• Retirement: a Restricted Share Unit is not forfeited if it is held by a Participant who retires at least 6 months after the grant date under a Company or Subsidiary plan (or if there is no Company or Subsidiary plan, a government retirement plan) in which the Participant is eligible for an immediate payment of a retirement benefit. In such event, the Restricted Share Unit vests and is paid in accordance with the original vesting schedule of the grant set forth in paragraph 2. Immediate commencement of a deferred vested pension benefit under a Company or Subsidiary retirement plan is not considered a retirement for these purposes.

• Divestiture: if a Restricted Share Unit is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Chief Executive Officer of the Company, the Restricted Share Unit will not be forfeited and will vest and be paid in accordance with the original vesting schedule set forth in paragraph 2. For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

5. A Participant will receive one Share upon the vesting and payment of a Restricted Share Unit.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Restricted Share Unit must be paid by the Participant at the appropriate time under applicable tax laws. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, but will generally withhold from the Shares to be issued upon payment of the Restricted Share Unit that number of Shares with a fair market value on the vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include, for Participants subject to taxation in the United States, applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Notwithstanding the foregoing, if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended, the Company will withhold Shares from the Shares to be issued upon payment of the Restricted Share Unit, as described herein, and will not use the other means set forth in the Plan unless approved by the Committee or in the event that withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences. Further, notwithstanding anything herein to the contrary, the Company may cause a portion of the Restricted Share Units to vest prior to the stated vesting date set forth in paragraph 2 in order to satisfy any Tax-Related Items that arise prior to the date of settlement of the Restricted Share Units; provided that to the extent necessary to avoid a prohibited distribution under Section 409A of the Code, the number of Restricted Share Units so accelerated and settled shall be with respect to a number of Shares with a value that does not exceed the liability for such Tax-Related Items.

Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

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11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary’s rights and interest in the Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “per capita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, , the Committee will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that the Restricted Share Unit will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

Further, as an additional condition of receiving the Restricted Share Unit, the Participant agrees that the Restricted Share Unit and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Terms without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Restricted Share Unit for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Terms, no Shares issuable upon vesting of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

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17. Non-Transferability. The Restricted Share Units are non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Terms.

19. Notices. Any notice required or permitted under the Award Terms shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

20. Severability and Judicial Modification. If any provision of the Award Terms is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Terms and all other provisions shall remain valid and enforceable.

21. Successors. The Award Terms shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Appendices. Notwithstanding any provisions in the Award Terms, for Participants residing and/or working outside the United States, the Restricted Share Unit shall be subject to the additional terms and conditions set forth in Appendix A to the Award Terms and to any special terms and conditions for the Participant’s country set forth in Appendix B to the Award Terms. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitute part of the Award Terms.

23. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

24. Compliance with Code Section 409A. It is intended that the Restricted Share Right granted pursuant to the Award Terms be compliant with Section 409A of the Code and the Award Terms shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Terms and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Right granted pursuant to the Award Terms satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Terms or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

25. Waiver. A waiver by the Company of breach of any provision of the Award Terms shall not operate or be construed as a waiver of any other provision of the Award Terms, or of any subsequent breach by the Participant or any other Participant.

26. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

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27. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Terms and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

28. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

29. Entire Agreement. The Award Terms and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

30. In accordance with Section 15(c) of the Plan (as in effect at the grant date), the Participant may reject the Restricted Share Unit by notifying the Company within 30 days of the grant date that he or she does not accept the Restricted Share Unit. The Participant’s acceptance of the Restricted Share Unit constitutes the Participant’s acceptance of and agreement with the Award Terms. Notwithstanding the foregoing, if required by the Company, the Participant will provide a signed copy of the Award Terms in such manner and within such timeframe as may be requested by the Company. The Company has no obligation to issue Shares to the Participant if the Participant does not accept the Restricted Share Unit.

Performance Feature

31. If the vesting of a Restricted Share Unit is subject to a performance condition, the following additional terms and conditions will apply to that Award:

• The Participant will have the right to receive from 0% to 200% of the number of Shares indicated on the grant date, based on achievement of performance goals established by the Committee for that Award.

• The performance period is three years. Attainment of performance goals for the three-year period will be determined or certified, as applicable, by the Committee on a date as soon as practicable following the end of the performance period (the “Determination Date”).

• Notwithstanding paragraph 2 of the Award Terms, the vesting date of the Award shall be the later of the date set forth in paragraph 2 and the Determination Date. To vest in the Award, the Participant must remain employed with the Company or a Subsidiary until such vesting date, except as otherwise set forth in paragraph 4. In any case, except where payment of the Award is made upon a Change in Control within the meaning of Treas. Reg. § 1.409-3(i)(5), in no event will payment of the Award occur outside of the time period set forth in paragraph 2.

• In the event of termination of the Participant’s employment with the Company (including its Subsidiaries) before the vesting of the Restricted Share Unit by reason of death, disability, retirement or divestiture, each as described in paragraph 4, payment of the Restricted Share Unit will be based on the extent to which the performance objectives established by the Committee have been attained following the end of the performance period.

• In the event of a Change in Control, the performance feature of the Award will cease to apply and the Award will be converted into a time-based award in accordance with the formula set forth in Section 12(a)(v) of the Plan. The vesting and payment of such Award will then be governed in accordance with paragraph 4.

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APPENDIX A

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Restricted Share Units if the Participant resides and/or works outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Terms and Conditions for Restricted Share Units (the “Terms and Conditions”).

A. Termination. This provision supplements paragraph 3 of the Terms and Conditions.

The Company will determine when the Participant is no longer providing services for purposes of the Restricted Share Units (including whether the Participant may still be considered to be providing services while on a leave of absence).

B. Responsibility for Taxes. This provision replaces paragraph 6 of the Terms and Conditions (except if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended).

The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Subsidiary that employs the Participant (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of these Restricted Shares Units, including, but not limited to, the grant, vesting or settlement of Restricted Shares Units, the subsequent sale of Shares acquired pursuant to the Restricted Share Unit and the receipt of any dividends or dividend equivalents; and (b) do not commit to and are under no obligation to structure the terms of the Restricted Share Units or any aspect of the Restricted Share Units to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. The Participant shall not make any claim against the Company, the Employer or any other Subsidiary, or their respective board, officers or employees related to Tax-Related Items arising from this Award. Furthermore, if the Participant has become subject to tax in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Participant will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: (i) requiring a cash payment from the Participant; (ii) withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer, (iii) withholding from the proceeds of the sale of Shares acquired pursuant to the Restricted Share Units, either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization without further consent); and/or (iv) withholding from the Shares subject to Restricted Share Units.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant may receive a refund of any over-withheld amount in cash (with no entitlement to the Share equivalent) or, if not refunded, the Participant may seek a refund from the local tax authorities. If the obligation for Tax-Related Items is satisfied by withholding in Shares, the Participant is deemed, for tax purposes, to have been issued the full number of Shares subject to the vested Restricted Shares Units, notwithstanding that a number of the Shares is held back solely for the purpose of paying the Tax-Related Items.

Finally, the Participant shall pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Tax-Related Items.

C.    Nature of Award. In accepting the Restricted Share Units, the Participant acknowledges, understands and agrees that:

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     a.    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

     b.    this Award of Restricted Share Units is exceptional, voluntary and occasional and does not create any contractual or other right to receive future Restricted Share Units, or benefits in lieu of Restricted Share Units, even if Restricted Share Units have been granted in the past;

     c.    all decisions with respect to future Restricted Share Units or other Awards, if any, will be at the sole discretion of the Company;

     d.    this Award of Restricted Share Units and the Participant’s participation in the Plan shall not create a right to, or be interpreted as forming an employment or service contract with the Company and shall not interfere with the ability of the Employer to terminate the Participant’s employment contract (if any) at any time;

     e.    the Participant’s participation in the Plan is voluntary;

     f.    this Award of Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not intended to replace any pension rights or compensation;

g.    this Award of Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not part of normal or expected compensation or salary for any purposes, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

     h.    the future value of the Shares subject to the Restricted Share Units is unknown , indeterminable and cannot be predicted with certainty;

     i.    unless otherwise agreed with the Company, Restricted Share Units and the Shares acquired under the Plan, and the income from and value of same, are not granted as consideration for, or in connection with, the service the Participant may provide as a director of any Subsidiary;

     j.    no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Award of Restricted Share Units resulting from termination of the Participant’s employment and/or service relationship (for any reason whatsoever and regardless of whether later found to be invalid or in breach of applicable laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any);

     k.    unless otherwise provided in the Plan or by the Company in its discretion, this Award of Restricted Share Units and the benefits under the Plan evidenced by these Award Terms do not create any entitlement to have this Award of Restricted Share Units or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

     l.    neither the Company, the Employer nor any other Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Restricted Share Units or of any amounts due to the Participant pursuant to the Restricted Share Units or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data as described in these Award Terms and any other grant materials by and among, as applicable, the Company, the Employer and any other Subsidiary for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan.

The Participant understands that the Company and the Employer may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all Restricted Share Units or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

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The Participant understands that Data may be transferred to Merrill Lynch, which is assisting the Company with the implementation, administration and management of the Plan. The Participant understands that the recipients of Data may be located in the United States or elsewhere, and that the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of Data by contacting the Participant’s local human resources representative. The Participant authorizes the Company, Merrill Lynch and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Participant’s consent is that the Company would not be able to grant this Award of Restricted Share Units or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of the Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.

Finally, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form (or any other agreements or consents) that the Company and/or the Employer may deem necessary to obtain from the Participant for the purpose of administering the Participant’s participation in the Plan in compliance with the data privacy laws in the Participant’s country, either now or in the future. The Participant understands and agrees that he or she will not be able to participate in the Plan if the Participant fails to provide such consent or agreement as requested by the Company and/or the Employer.

E. Retirement. Notwithstanding paragraph 4 of the Terms and Conditions, if the Company receives an opinion of counsel that there has been a legal judgment and/or legal development in the Participant’s jurisdiction that would likely result in the favorable treatment applicable to the Restricted Share Units pursuant to paragraph 4 being deemed unlawful and/or discriminatory, then the Company will not apply the favorable treatment at the time of the Participant’s retirement, and the Restricted Share Units will be treated as set forth in the remaining provisions of paragraph 4 of the Terms and Conditions.

F. Language. The Participant acknowledges that he or she is sufficiently proficient in English to understand the terms and conditions of the Award Terms. Furthermore, if the Participant has received these Award Terms, or any other document related to this Award of Restricted Share Units and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

G. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, the broker’s country, or the country in which the Shares are listed, the Participant may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, which may affect his or her ability to accept, acquire, sell, or attempt to sell or otherwise dispose of Shares or rights to Shares (e.g., Restricted Share Units), or rights linked to the value of Shares, during such times as he or she is considered to have “inside information” regarding the Company (as defined by applicable laws or regulations in the applicable jurisdictions, including the United States and the Participant’s country). Local insider trading laws and regulations may prohibit the cancellation or amendment of orders the Participant placed before possessing inside information. Furthermore, the Participant may be prohibited from (i) disclosing the inside information to any third party, including fellow employees (other than on a “need to know” basis) and (ii) “tipping” third parties or causing them to otherwise buy or sell securities. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

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H. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant’s participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant’s compliance.

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APPENDIX B

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Terms and Conditions for Restricted Share Units

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Terms and Conditions for Restricted Share Units (the “Terms and Conditions”).

Terms and Conditions

This Appendix B includes special terms and conditions that govern Restricted Share Units if the Participant resides and/or works in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or working, or if the Participant transfers to another country after the grant of Restricted Share Units or is considered a resident of another country for local law purposes, the Committee shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of December 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant’s country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently works and/or resides, or if the Participant transfers to another country after the grant of the Restricted Share Unit, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

AUSTRALIA

Terms and Conditions

Australia Offer Document.

The grant of Restricted Share Units is intended to comply with the provisions of the Corporations Act, 2001, Australian Securities & Investments Commission (“ASIC”) Regulatory Guide 49 and ASIC Class Order 14/1000. Additional details are set forth in the Offer Document to Australian resident employees, which is being provided to the Participant with the Award Terms.

Notifications

Exchange Control Information.

Exchange control reporting is required for cash transactions exceeding A$10,000 and for international fund transfers. If an Australian bank is assisting with the transaction, the bank will file the report on the Participant’s behalf.

Tax Information.

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The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to conditions in the Act).

AUSTRIA

Notifications

Exchange Control Information.

If the Participant holds Shares obtained through the Plan outside of Austria, the Participant must submit a report to the Austrian National Bank. An exemption applies if the value of the Shares as of any given quarter does not meet or exceed €30,000,000 or as of December 31 does not meet or exceed €5,000,000. If the former threshold is exceeded, quarterly obligations are imposed, whereas if the latter threshold is exceeded, annual reports must be given. If quarterly reporting is required, the reports must be filed by the fifteenth day of the month following the last day of the respective quarter. The annual reporting date is December 31 and the deadline for filing the annual report is January 31 of the following year.

When Shares are sold or cash dividends or dividend equivalent payments are received, there may be exchange control obligations if the cash received is held outside Austria. If the transaction volume of all the Participant’s accounts abroad meets or exceeds €10,000,000, the movements and balances of all accounts must be reported monthly, as of the last day of the month, on or before the fifteenth of the following month.

BELGIUM

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a Belgian resident, the Participant is required to report any bank accounts opened and maintained outside of Belgium (e.g., brokerage accounts opened in connection with the Plan) on his or her annual tax return. In a separate report, the Participant is required to provide the National Bank of Belgium with certain details regarding such foreign accounts (including the account number, bank name and country in which any such account was opened). This report, as well as additional information on how to complete it, can be found on the website of the National Bank of Belgium, www.nbb.be, under Kredietcentrales / Centrales des crédits caption. The Participant should consult with his or her personal tax advisor to determine his or her personal reporting obligations.

Stock Exchange Tax.

From January 1, 2017, a stock exchange tax applies to transactions executed through a non-Belgian financial intermediary. The stock exchange tax likely will apply when the Shares are sold. The Participant should consult with his or her personal tax advisor to determine his or her obligations with respect to the stock exchange tax.

BRAZIL

Terms and Conditions

Compliance with Law.

By accepting the Restricted Share Units, the Participant acknowledges that he or she agrees to comply with applicable Brazilian laws and to pay any and all applicable taxes associated with the vesting of the Restricted Share Units, the sale of the Shares acquired under the Plan and the receipt of any dividends.

Acknowledgement of Nature of the Grant.

This provision supplements paragraph C “Nature of Award” of Appendix A:

By accepting the Restricted Share Units, the Participant agrees that he or she is making an investment decision, the Shares will be issued to the Participant only if the vesting conditions are met and any necessary services are rendered by the Participant over the vesting period, and the value of the underlying Shares is not fixed and may increase or decrease in value over the vesting period without compensation to the Participant.

B-2

Notifications

Exchange Control Information.

If the Participant is a resident of or domiciled in Brazil, he or she will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of the assets and rights is equal to or greater than US$100,000. If such amount exceeds US$100,000,000, the declaration must be submitted quarterly. Assets and rights that must be reported include Shares acquired under the Plan.

Tax on Financial Transactions (IOF).

Repatriation of funds (e.g., sale proceeds) into Brazil and the conversion of USD into BRL associated with such fund transfers may be subject to the Tax on Financial Transactions. It is the Participant’s responsibility to comply with any applicable Tax on Financial Transactions arising from the Participant’s participation in the Plan. The Participant should consult with his or her personal tax advisor for additional details.

CANADA

Terms and Conditions

Award Settled Only in Shares.

Notwithstanding any discretion in the Plan, the Award of Restricted Share Units shall be settled in Shares only. The Participant is not entitled to receive a cash payment pursuant to the Award.

Termination of Service.

The following provision replaces paragraph A “Termination” of Appendix A:

For purposes of the Restricted Share Units, the Participant’s employment relationship will be considered terminated (regardless of the reason for such termination and whether or not later found to be invalid or in breach of Canadian laws or the terms of the Participant’s employment agreement, if any) effective as of the date that is the earlier of (i) the date of the Participant’s termination, (ii) the date the Participant receives notice of termination, or (iii) the date the Participant is no longer actively providing service and will not be extended by any notice period (e.g., active service would not include any contractual notice period or any period of “garden leave” or similar period mandated under Canadian laws or the terms of the Participant’s employment agreement, if any). Unless otherwise expressly provided in these Award Terms or determined by the Company, the Participant’s right to vest in the Restricted Share Units, if any, will terminate on such date. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing service for purposes of the Restricted Share Unit (including whether the Participant may still be considered to be providing services while on a leave of absence).

The Following Provisions Apply for Participants Resident in Quebec:

Consent to Receive Information in English.

The Participant acknowledges that it is the express wish of the parties that these Award Terms, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be written in English.

Les parties reconnaissent avoir exigé la rédaction en anglais de Conditions d’attribution, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement à, la présente convention.

Authorization to Release and Transfer Necessary Personal Information.

The following provision supplements paragraph D “Data Privacy” of Appendix A:

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The Participant hereby authorizes the Company and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the administration and operation of the Plan. The Participant further authorizes the Company, any Subsidiary and the administrator of the Plan to disclose and discuss the Plan with their advisors. The Participant further authorizes the Company and any Subsidiary to record such information and to keep such information in the Participant’s Employee file.

Notifications

Securities Law Information.

The Participant acknowledges that he or she is permitted to sell the Shares acquired under the Plan through the designated broker appointed by the Company, provided the sale of the Shares takes place outside of Canada through facilities of a stock exchange on which the Shares are listed (i.e., the NYSE).

Foreign Asset/Account Reporting Information.

Canadian residents are required to report to the tax authorities certain foreign property (included Restricted Share Units) on form T1135 (Foreign Income Verification Statement) if the total cost of the foreign property exceeds C$100,000 at any time in the year. The form must be filed by April 30 of the following year. Restricted Share Units must be reported-generally at a nil cost-if the C$100,000 cost threshold is exceeded because of other foreign property the Participant holds. If Shares are acquired, their cost generally is the adjusted cost base (“ACB”) of the Shares. The ACB would normally equal the fair market value of the Shares at vesting, but if the Participant owns other Shares, this ACB may have to be averaged with the ACB of the other Shares. The Participant should consult with his or her personal legal advisor to ensure compliance with applicable reporting obligations.

CHINA

Terms and Conditions

The following terms and conditions will apply to Participants who are subject to exchange control restrictions and regulations in the People’s Republic of China (“the PRC”), including the requirements imposed by the State Administration of Foreign Exchange (“SAFE”), as determined by the Company in its sole discretion:

Termination of Employment.

Due to exchange control laws in the PRC, the Participant agrees that the Company reserves the right to require the sale of any Shares acquired at vesting of the Restricted Share Units upon the termination of the Participant’s employment for any reason. If the Company, in its discretion, does not exercise its right to require the automatic sale of Shares issuable upon vesting of the Restricted Share Units, as described in the preceding sentence, the Participant understands and agrees that any Shares acquired by the Participant under the Plan must be sold no later than six (6) months after termination of the Participant’s employment, or within any other such time frame as permitted by the Company or required by SAFE. The Participant understands that any Shares acquired under the Plan that have not been sold within six (6) months of the Participant’s termination of employment will be automatically sold by a designated broker at the Company’s discretion, pursuant to this authorization by the Participant.

The Participant agrees that the Company is authorized to instruct its designated broker to assist with the mandatory sale of such Shares (on the Participant’s behalf, pursuant to this authorization) and the Participant expressly authorizes the Company’s designated broker to complete the sale of such Shares. The Participant also agrees to sign any agreements, forms, and/or consents that may be reasonably requested by the Company (or the designated broker) to effectuate the sale of the Shares (including, without limitation, as to the transfers of the proceeds and other exchange control matters noted below) and shall otherwise cooperate with the Company with respect to such matters, provided that the Participant shall not be permitted to exercise any influence over how, when or whether the sales occur. The Participant acknowledges that the Company’s designated broker is under no obligation to arrange for the sale of the Shares at any particular price. Due to fluctuations in the Share price and/or applicable exchange rates between vesting and (if later) the date on which the Shares are sold, the amount of proceeds ultimately distributed to the Participant may be more or less than the market value of the Shares upon vesting (which is the amount relevant to determining the Participant’s liability for Tax-Related Items). The Participant understands and agrees that the Company is not responsible for the amount of any loss the Participant may incur and the Company assumes no liability for any fluctuations in the Share price and/or any applicable exchange rate.

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Upon the sale of the Shares, the Company agrees to pay the cash proceeds from the sale (less any Tax-Related Items, brokerage fees and commissions) to the Participant in accordance with the applicable exchange control laws and regulations including but not limited to the restrictions set forth in this Appendix B for China below under “Exchange Control Restrictions.”

Exchange Control Restrictions.

The Participant understands and agrees that, pursuant to local exchange control requirements, the Participant will be required to immediately repatriate any cash payments or proceeds obtained with respect to participation in the Plan to the PRC. The Participant further understands that such repatriation of any cash payments or proceeds may need to be effectuated through a special exchange control account established by the Company or any Subsidiary, and the Participant hereby consents and agrees that any payment or proceeds may be transferred to such special account prior to being delivered to the Participant. Any payment or proceeds may be paid to the Participant in U.S. dollars or local currency at the Company’s discretion. If the payments or proceeds are paid to the Participant in U.S. dollars, the Participant will be required to set up a U.S. dollar bank account in the PRC (if the Participant does not already have one) so that the payments or proceeds may be deposited into this account. If the payments or proceeds are paid to the Participant in local currency, the Company is under no obligation to secure any particular currency exchange rate and the Company may face delays in converting the payments or proceeds to local currency due to exchange control restrictions. The Participant agrees to bear any currency exchange rate fluctuation risk between the time the cash proceeds are received and the time the cash proceeds are distributed to the Participant through the special account described above.

The Participant further agrees to comply with any other requirements that may be imposed by the Company in the future to facilitate compliance with exchange control requirements in the PRC.

Notifications

Exchange Control Information.

PRC residents may be required to report to SAFE all details of their foreign financial assets and liabilities, as well as details of any economic transactions conducted with non-PRC residents.

FRANCE

Terms and Conditions

Language Consent.

By accepting the Restricted Share Units and the Award Terms, which provide for the terms and conditions of the Restricted Share Units, the Participant confirms having read and understood the documents relating to this Award (the Plan and the Award Terms, including the Appendices) which were provided to the Participant in English. The Participant accepts the terms of those documents accordingly.

En acceptant l’Attribution d’Actions Attribuées et ce Contrat d’Attribution qui contient les termes et conditions des Actions Attribuées, le Participant confirme avoir lu et compris les documents relatifs à cette attribution (le Plan et le Contrat d’Attribution, ainsi que les Annexes) qui ont été transmis au Participant en langue anglaise. Le Participant accepte ainsi les conditions et termes de ces documents.

Notifications

Tax Information.

The Restricted Share Units are not intended to be French tax-qualified awards.

Foreign Asset/Account Reporting Information.

French residents are required to report all foreign accounts (whether open, current or closed) to the French tax authorities when filing their annual tax returns. The Participant should consult his or her personal advisor to ensure compliance with applicable reporting obligations.

GERMANY

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Notifications

Exchange Control Information.

If the Participant receives cross-border payments in excess of €12,500 in connection with the sale of securities (including Shares acquired under the Plan) or the receipt of any dividends or dividend equivalent payments, such payment must be reported monthly to the German Federal Bank (Bundesbank).  The Participant is responsible for the reporting obligation and should file the report electronically by the fifth day of the month following the month in which the payment is made. A copy of the report (“Allgemeines Meldeportal Statistik”) can be accessed via Bundesbank’s website (www.bundesbank.de) and is available in both German and English.

HUNGARY

There are no country-specific provisions.

INDIA

Notifications

Exchange Control Information.

Indian residents are required to repatriate to India all proceeds received from the sale of Shares within 90 days of receipt and any dividends or dividend equivalent payments within 180 days of receipt, or within such other period of time as may be required under applicable regulations. The Participant must maintain the foreign inward remittance certificate received from the bank where the foreign currency is deposited in the event that the Reserve Bank of India or the Company requests proof of repatriation. It is the Participant’s responsibility to comply with applicable exchange control laws in India.

Foreign Asset/Account Reporting Information.

The Participant is required to declare any foreign bank accounts and any foreign financial assets (including Shares held outside India) in the Participant’s annual tax return. The Participant is responsible for complying with this reporting obligation and should confer with his or her personal tax advisor in this regard.

JAPAN

Notifications

Foreign Asset/Account Reporting Information.

The Participant will be required to report details of any assets held outside of Japan as of December 31 (including any Shares acquired under the Plan) to the extent such assets have a total net fair market value exceeding ¥50,000,000. Such report will be due by March 15 of the following year. The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies to the Participant and whether the Participant will be required to report details of any outstanding Restricted Share Units, Shares or cash held by the Participant in the report.

KOREA

Notifications

Exchange Control Information.

Exchange control laws require Korean residents who realized US$500,000 or more from the sale of Shares or the receipt of dividends in a single transaction before July 18, 2017 to repatriate the proceeds back to Korea within three years of the sale/receipt.

Foreign Asset/Account Reporting Information.

B-6

If the Participant is a Korean resident, the Participant must declare all of his or her foreign financial accounts (including any brokerage account) to the Korean tax authority and file a report with respect to such accounts if the value of such accounts exceeds KRW 1 billion (or an equivalent amount in foreign currency). The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies.

MEXICO

Terms and Conditions

Policy Statement.

The Award of Restricted Share Units is a unilateral and discretionary award and, therefore, the Company reserves the absolute right to amend it and discontinue it at any time without any liability.

The Company, with offices at 390 Park Avenue, New York City, New York, 10022 U.S.A., is solely responsible for the administration of the Plan, and participation in the Plan and the Award of the Restricted Share Units does not, in any way, establish an employment relationship between the Participant and the Company since the Participant is participating in the Plan on a wholly commercial basis and the sole employer is a Mexican Subsidiary, nor does it establish any rights between the Participant and the Employer.

Plan Document Acknowledgment.

By accepting the Restricted Share Units, the Participant acknowledges that he or she has received copies of the Plan, has reviewed the Plan and the Award Terms in their entirety, and fully understands and accepts all provisions of the Plan and the Award Terms, including the Appendices.

In addition, the Participant expressly approves that: (i) participation in the Plan does not constitute an acquired right; (ii) the Plan and participation in the Plan is offered by the Company on a wholly discretionary basis; (iii) participation in the Plan is voluntary; and (iv) neither the Company nor any Subsidiary is responsible for any decrease in the value of the Shares acquired upon vesting of the Restricted Share Units.

Finally, the Participant hereby declares that he or she does not reserve any action or right to bring any claim against the Company for any compensation or damages as a result of his or her participation in the Plan and therefore grant a full and broad release to the Employer, the Company and its other Subsidiaries with respect to any claim that may arise under the Plan.

Spanish Translation

Declaración de Política.

El Otorgamiento de Unidades de Acciones Restringidas es un otorgamiento unilateral y discrecional y, por lo tanto, la Compañía se reserva el derecho absoluto de modificar y discontinuar el Plan en cualquier tiempo, sin responsabilidad alguna.

La Compañía, con oficinas registradas ubicadas en 390 Park Avenue, New York, New York 10022 U.S.A., es únicamente responsable de la administración del Plan, y la participación en el Plan y el Otorgamiento de Unidades de Acciones Restringidas no establecen, de forma alguna, una relación

de trabajo entre el Participante y la Compañía, ya que el Participante está participando en el Plan sobre una base comercial y el único patrón es una Afiliada Mexicana y tampoco establece ningún derecho entre usted y el Patrón.

Reconocimiento del Documento del Plan.

Al aceptar el Otorgamiento de las Unidades de Acciones Restringidas, el Participante reconoce que ha recibido copias del Plan, ha revisado el Plan y los Términos del Otorgamiento en su totalidad y que entiende y acepta completamente todas las disposiciones contenidas en el Plan y en los Términos del Otorgamiento, incluyendo los Apéndices.

Adicionalmente, el Participante aprueba expresamente que (i) la participación en el Plan no constituye un derecho adquirido; (ii) el Plan y la participación en el Plan se ofrecen por la Compañía de forma enteramente discrecional; (iii) la participación en el Plan es voluntaria; y (iv) la Compañía, cualquier Filial y el Patrón no son responsables por cualquier disminución en el valor de las Acciones adquiridas al momento de tener derecho en relación con las Unidades de Acciones Restringidas.

B-7

Finalmente, el Participante declara que no se reserva ninguna acción o derecho para interponer una reclamación o demanda en contra de la Compañía por compensación, daño o perjuicio alguno como resultado de su participación en el Plan y, por lo tanto, otorga el más amplio y total finiquito al Patrón, la Compañía y sus Filiales en relación con cualquier reclamación demanda que pudiera surgir de conformidad con el Plan.

NETHERLANDS

There are no country-specific provisions.

RUSSIA

Terms and Conditions

U.S. Transaction.

The Participant understands that the grant of the Restricted Share Units is a right to receive Shares if certain conditions are met and that the offer is made by the Company in the United States. Upon vesting of the Restricted Share Units, any Shares to be issued to the Participant shall be delivered to the Participant through a brokerage account in the United States. The Participant is not permitted to sell Shares directly to other Russian legal entities or residents.

Notifications

Exchange Control Information.

Under current exchange control regulations, within a reasonably short time after the sale of Shares acquired upon vesting of the Restricted Share Units or the receipt of dividend equivalent payments, the Participant is required to repatriate such funds received in connection with the Plan to the Participant’s bank account in Russia prior to using those proceeds for any purpose including reinvestments. Such proceeds must be initially credited to the Participant through a foreign currency account at an authorized bank in Russia. After the proceeds are initially received in Russia, they may be further remitted to foreign banks in accordance with Russian exchange control laws. The Participant is strongly encouraged to contact the Participant’s personal advisor to confirm the applicable Russian exchange control rules because significant penalties may apply in the case of non-compliance and because exchange control requirements may change.

Securities Law Information.

The grant of the Restricted Share Units and the distribution of the Plan and all other materials the Participant may receive regarding participation in the Plan do not constitute an offering or the advertising of securities in Russia. The issuance of Shares pursuant to the Plan has not and will not be registered in Russia and, therefore, the Shares may not be used for an offering or public circulation in Russia. In no event will Shares be delivered to the Participant in Russia; all Shares acquired under the Plan will be maintained on the Participant’s behalf in the United States.

Data Privacy Acknowledgement.

The Participant hereby acknowledges that he or she has read and understands the terms regarding collection, processing and transfer of Data contained in Appendix A to the Award Terms and by participating in the Plan, the Participant agrees to such terms. In this regard, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form to the Company or the Employer (or any other agreements or consents that may be required by the Company or the Employer) that the Company and/or the Employer may deem necessary to obtain under the data privacy laws of Russia, either now or in the future.

Labor Law Information.

If the Participant continues to hold Shares after involuntary termination, the Participant may not be eligible to receive unemployment benefits in Russia.

Anti-Corruption Legislation Information.

B-8

Individuals holding public office in Russia, as well as their spouses and dependent children, may be prohibited from opening or maintaining a foreign brokerage or bank account and holding any securities, whether acquired directly or indirectly, in a foreign company (including Shares acquired under the Plan). The Participant is strongly advised to consult with his or her personal legal advisor to determine whether the restriction applies to the Participant.

SPAIN

Terms and Conditions

No Entitlement for Claims or Compensation.

The following provisions supplement paragraph A “Termination” of Appendix A.

By accepting the Restricted Share Units, the Participant consents to participation in the Plan and acknowledges that Participant has received a copy of the Plan.

The Participant understands and agrees that, as a condition of the grant of the Restricted Share Units, if the Participant’s employment terminates, unless otherwise provided in the Award Terms or by the Company, any unvested Restricted Share Units shall be forfeited without entitlement to the underlying Shares or to any amount as indemnification in the event of a termination, including, but not limited to: resignation, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’ Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985.

The Participant understands that the Company has unilaterally, gratuitously and in its sole discretion decided to grant Restricted Share Units under the Plan to individuals who may be Employees of the Company or a Subsidiary. The decision is limited and entered into based upon the express assumption and condition that any Restricted Share Units will not economically or otherwise bind the Company or any Subsidiary, including the Employer, on an ongoing basis, other than as expressly set forth in the Award Terms. Consequently, the Participant understands that the Restricted Share Units are granted on the assumption and condition that the Restricted Share Units shall not become part of any employment or service agreement (whether with the Company or any Subsidiary, including the Employer) and shall not be considered a mandatory benefit, salary for any purpose (including severance compensation) or any other right whatsoever. Furthermore, the Participant understands and freely accepts that there is no guarantee that any benefit whatsoever shall arise from the grant of Restricted Share Units, which is gratuitous and discretionary, since the future value of the Restricted Share Units and the underlying Shares is unknown and unpredictable. The Participant also understands that the grant of Restricted Share Units would not be made but for the assumptions and conditions set forth hereinabove; thus, the Participant understands, acknowledges and freely accepts that, should any or all of the assumptions be mistaken or any of the conditions not be met for any reason, the Restricted Share Unit and any right to the underlying Shares shall be null and void.

Notifications

Securities Law Information.

No “offer of securities to the public”, as defined under Spanish law, has taken place or will take place in the Spanish territory with respect to the Restricted Share Units. No public offering prospectus has been nor will be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission) (“CNMV”). Neither the Plan nor the Award Terms constitute a public offering prospectus and they have not been, nor will they be, registered with the CNMV.

Exchange Control Information.

It is the Participant’s responsibility to comply with exchange control regulations in Spain. The Participant must declare the acquisition of Shares for statistical purposes to the Spanish Direccion General de Comercio e Inversiones (the “DGCI”) of the Ministry of Economy and Competitiveness. In addition, the Participant must also file a Form D-6 with the Directorate of Foreign Transaction each January in which the Shares are owned. The sale of Shares also must be declared on Form D-6 filed with the DGCI in January, unless the sale proceeds exceed the applicable threshold (currently €1,502,530), in which case, the filing is due within one month after the sale.

Foreign Asset/Account Reporting Information.

B-9

The Participant is required to declare electronically to the Bank of Spain any securities accounts (including brokerage accounts held abroad), as well as the Shares held in such accounts if the value of the transactions during the prior tax year or the balances in such accounts as of December 31 of the prior tax year exceed €1,000,000.

Further, to the extent that the Participant holds Shares and/or has bank accounts outside Spain with a value in excess of €50,000 (for each type of asset) as of December 31, the Participant will be required to report information on such assets on his or her tax return (tax form 720) for such year. After such Shares and/or accounts are initially reported, the reporting obligation will apply for subsequent years only if the value of any previously-reported Shares or accounts increases by more than €20,000 or if the Participant sells or otherwise disposes of any previously-reported Shares or accounts.

SWITZERLAND

Notifications

Securities Law Information.

The grant of the Restricted Share Units under the Plan is considered a private offering in Switzerland and is, therefore, not subject to registration in Switzerland. Neither this document nor any other material related to the Restricted Share Units constitutes a prospectus as such term is understood pursuant to Article 652a of the Swiss Code of Obligations, and neither this document nor any other materials related to the Restricted Share Units may be publicly distributed or otherwise made publicly available in Switzerland. Neither this document nor any other offering or marketing materials relating to the Restricted Share Units have been or will be filed with, approved or supervised by any Swiss regulatory authority (in particular, the Swiss Financial Market Supervisory Authority (FINMA)).

UNITED KINGDOM

Terms and Conditions

Responsibility for Taxes.

The following supplements paragraph B “Responsibility for Taxes” of Appendix A:

Without limitation to paragraph B “Responsibility for Taxes” of Appendix A, the Participant agrees that the Participant is liable for all Tax-Related Items and hereby covenants to pay all such Tax-Related Items as and when requested by the Company or the Employer or by Her Majesty’s Revenue & Customs (“HMRC”) (or any other tax authority or any other relevant authority). The Participant also agrees to indemnify and keep indemnified the Company and the Employer against any Tax-Related Items that they are required to pay or withhold or have paid or will have to pay to HMRC (or any other tax authority or any other relevant authority) on the Participant’s behalf.

Notwithstanding the foregoing, if the Participant is a Director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934), the Participant may not be able to indemnify the Company or the Employer for the amount of any income tax not collected from or paid by the Participant, as it may be considered a loan. In this case, the amount of any uncollected income tax may constitute a benefit to the Participant on which additional income tax and employee National Insurance contributions (“NICs”) may be payable. The Participant agrees to report and pay any income tax due on this additional benefit directly to HMRC under the self-assessment regime and to pay the Employer for the value of the employee NICs due on this additional benefit, which the Company or the Employer may recover from the Participant by any of the means referred to in the Terms and Conditions, including the Appendices.

B-10

EX-10.GGG

Exhibit 10(ggg)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

RESTRICTED SHARE UNIT AWARD AGREEMENT

CHIEF EXECUTIVE OFFICER INITIAL EQUITY AWARD

Grant Date: January 19, 2018

The terms and conditions of this Restricted Share Unit Award Agreement, as set forth in this agreement (the “Award Agreement”) are authorized by the Compensation and Benefits Committee of the Board of Directors. The Restricted Share Unit award is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”). Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Restricted Share Unit award, the Participant must affirmatively accept the Award and the terms of this Award Agreement within 6 months of the above grant date, as set forth in paragraph 29 of the Award Agreement.

General Terms and Conditions

1. The Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant’s account at Merrill Lynch’s OnLinewebsite www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued and paid on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below.

Vesting and Payment

2. A Restricted Share Unit vests on the third anniversary date of the grant date and will be paid to the Participant in Shares on the vesting date or within 90 days thereafter.

3. Except as provided in paragraph 4, if a Participant’s employment with the Company (including its Subsidiaries) is terminated before the Restricted Share Unit vests, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death or Disability: a Restricted Share Unit held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests and is paid on the original stated vesting date set forth in paragraph 2.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Restricted Share Unit vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Restricted Share Unit will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Restricted Share Unit will be paid to the Participant on the original stated vesting date set forth in paragraph 2.

• Termination Following Change in Control: as further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is

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terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant on the original stated vested date set forth in paragraph 2.

• Divestiture: if a Restricted Share Unit is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Committee, the Restricted Share Unit will not be forfeited and will vest and be paid in accordance with the original vesting schedule set forth in paragraph 2. For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

5. A Participant will receive one Share upon the vesting and payment of a Restricted Share Unit.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Restricted Share Unit must be paid by the Participant at the appropriate time under applicable tax laws. The Company will satisfy applicable tax withholding obligations by withholding from the Shares to be issued upon payment of the Restricted Share Unit, unless an alternative withholding method is approved by the Committee or withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences, in which case withholding will be made pursuant to Section 15(l) of the Plan. The number of Shares withheld will be that number with a fair market value on the vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Further, notwithstanding anything herein to the contrary, the Company may cause a portion of the Restricted Share Units to vest prior to the stated vesting date set forth in paragraph 2 in order to satisfy any Tax-Related Items that arise prior to the date of settlement of the Restricted Share Units; provided that to the extent necessary to avoid a prohibited distribution under Section 409A of the Code, the number of Restricted Share Units so accelerated and settled shall be with respect to a number of Shares with a value that does not exceed the liability for such Tax-Related Items.

Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

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12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary’s rights and interest in the Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “per capita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, the Committee will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that the Restricted Share Unit will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

Further, as an additional condition of receiving the Restricted Share Unit, the Participant agrees that the Restricted Share Unit and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Restricted Share Unit for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares issuable upon vesting of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

17. Non-Transferability. The Restricted Share Units are non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

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18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Agreement.

19. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

20. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

21. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

23. Compliance with Code Section 409A. It is intended that the Restricted Share Right granted pursuant to the Award Agreement be compliant with Section 409A of the Code and the Award Agreement shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Agreement and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Right granted pursuant to the Award Agreement satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Agreement or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

24. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

25. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

26. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

27. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

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28. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

29. As permitted by Section 15(c) of the Plan, receipt of this Restricted Share Unit award is subject to the Participant’s acceptance of the Award and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Award, the Participant must provide such Acceptance within 6 months of the grant date of the Award. The date as of which the Participant’s Restricted Share Unit award shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award will be cancelled in accordance with any administrative procedures adopted under the Plan.

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EX-10.HHH

Exhibit 10(hhh)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

RESTRICTED SHARE UNIT AWARD AGREEMENT

SIGN-ON AWARD - MARK J. KRAKOWIAK (2018 Grant)

Grant Date: February 15, 2018

The terms and conditions of this Restricted Share Unit Award Agreement, as set forth in this agreement (the “Award Agreement”) are authorized by the Compensation and Benefits Committee of the Board of Directors. The Restricted Share Unit award is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”). Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Restricted Share Unit award, the Participant must affirmatively accept the Award and the terms of this Award Agreement within 6 months of the above grant date, as set forth in paragraph 29 of the Award Agreement.

General Terms and Conditions

1. The Restricted Share Units are subject to the provisions of the Plan and the provisions of the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company. A Restricted Share Unit is an undertaking by the Company to issue the number of Shares indicated in the Participant’s account at Merrill Lynch’s OnLinewebsite www.benefits.ml.com, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein. A Participant has no voting rights or rights to receive dividends on Restricted Share Units, but the Board of Directors may authorize that dividend equivalents be accrued and paid on Restricted Share Units upon vesting in accordance with paragraphs 2 and 4 below.

Vesting and Payment

2. The Restricted Share Unit vests as to one-third of the Award on the first anniversary of the grant date, as to one-third of the Award on the second anniversary of the grant date and as to one-third of the Award on the third anniversary of the grant date. Any portion of the Restricted Stock Unit that vests will be paid to the Participant in Shares on the applicable vesting date or within 90 days thereafter.

3. Except as provided in paragraph 4, if a Participant’s employment with the Company (including its Subsidiaries) is terminated before the Restricted Share Unit vests, the Award is forfeited and is automatically canceled.

4. The following are exceptions to the vesting rules:

• Death or Disability: a Restricted Share Unit held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests and is paid in accordance with the original vesting schedule (or remaining portion thereof) set forth in paragraph 2.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Restricted Share Unit vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Restricted Share Unit will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Restricted Share Unit will be paid to the Participant in accordance with the original vesting schedule (or remaining portion thereof) set forth in paragraph 2.

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• Termination Following Change in Control: as further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant in accordance with the original vesting schedule (or remaining portion thereof) set forth in paragraph 2.

• Divestiture: if a Restricted Share Unit is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Chief Executive Officer, the Restricted Share Unit will not be forfeited and will vest and be paid in accordance with the original vesting schedule (or remaining portion thereof) set forth in paragraph 2. For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

5. A Participant will receive one Share upon the vesting and payment of a Restricted Share Unit.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Restricted Share Unit must be paid by the Participant at the appropriate time under applicable tax laws. The Company will satisfy applicable tax withholding obligations by withholding from the Shares to be issued upon payment of the Restricted Share Unit, unless an alternative withholding method is approved by the Committee or withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences, in which case withholding will be made pursuant to Section 15(l) of the Plan. The number of Shares withheld will be that number with a fair market value on the applicable vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Further, notwithstanding anything herein to the contrary, the Company may cause a portion of the Restricted Share Units to vest prior to the stated vesting dates set forth in paragraph 2 in order to satisfy any Tax-Related Items that arise prior to the date of settlement of the Restricted Share Units; provided that to the extent necessary to avoid a prohibited distribution under Section 409A of the Code, the number of Restricted Share Units so accelerated and settled shall be with respect to a number of Shares with a value that does not exceed the liability for such Tax-Related Items.

Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Restricted Share Units that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Restricted Share Unit prior to the death of the Participant who designated such beneficiary.

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11. Unless the Participant indicates on the form that a named beneficiary is to receive Restricted Share Units only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Restricted Share Units upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Restricted Share Units.

12. Should a beneficiary die after the Participant but before the Restricted Share Unit is paid, such beneficiary’s rights and interest in the Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Restricted Share Unit, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “per capita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Restricted Share Units that have not yet vested or been paid at the time of death of the Participant will be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, the Committee will equitably adjust the Restricted Share Unit as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Restricted Share Unit; and (ii) adjusting the terms and conditions of the Restricted Share Unit. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that the Restricted Share Unit will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

Further, as an additional condition of receiving the Restricted Share Unit, the Participant agrees that the Restricted Share Unit and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Restricted Share Unit for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares issuable upon vesting of the Restricted Share Units, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

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17. Non-Transferability. The Restricted Share Units are non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Restricted Share Unit shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Agreement.

19. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

20. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

21. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Restricted Share Unit and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

23. Compliance with Code Section 409A. It is intended that the Restricted Share Right granted pursuant to the Award Agreement be compliant with Section 409A of the Code and the Award Agreement shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Agreement and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Restricted Share Right granted pursuant to the Award Agreement satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Agreement or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

24. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

25. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

26. Governing Law and Venue. As stated in the Plan, the Restricted Share Unit and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Restricted Share Unit will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

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27. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

28. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

29. As permitted by Section 15(c) of the Plan, receipt of this Restricted Share Unit award is subject to the Participant’s acceptance of the Award and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Award, the Participant must provide such Acceptance within 6 months of the grant date of the Award. The date as of which the Participant’s Restricted Share Unit award shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award will be cancelled in accordance with any administrative procedures adopted under the Plan.

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EX-10.II

Exhibit 10(ii)

[Arconic Logo] 390 Park Avenue New York, NY 10022-4608 USA

January 16, 2018

Mark J. Krakowiak

Dear Mark,

As we have discussed, and on behalf of Arconic, I am pleased to offer you the position of EVP Strategy & Development, reporting to me. You will be a member of Arconic's Executive Leadership Team and will be elected an Officer of the company, pending Board approval. You will be based in Florida. The total compensation package includes annual targeted salary and substantial additional long-term compensation opportunities as summarized below.

Salary:

Annual salary will be $500,000, paid on a monthly basis.

Incentive Compensation:

You will be eligible for target annual Incentive Compensation of 75% of your base salary, or $375,00 for a full year, if targets are met. Actual payouts could be higher or lower than target depending on individual and business performance.

Sign-On Cash Bonus:

You will receive a special sign-on cash bonus totaling $500,000, less any applicable tax withholding, paid out as soon as administratively feasible after your start date. Should you voluntarily terminate your employment with Arconic for any reason in the first 12 months after your receipt of the bonus, you agree to reimburse the company for this amount. If you voluntarily terminate your employment with Arconic for any reason after 12 months and within 24 months, you agree to reimburse the company for half of this amount.

Annual Equity Awards:

You will be eligible for an annual equity award as part of the normal grant cycle starting in January 2019. Target value will be of $700,000 and subject to the provisions of the Arconic Stock Incentive Plan at the time of grant. For reference, based on the current guidelines for employees at your level, 80% will be granted as performance-based restricted stock units and 20% will be granted as time-vested equity awards in the form of either stock options and/or restricted stock units. The design of the program is reviewed each year and is subject to change.

Sign-On Equity Awards:

You will receive a special equity award totaling $1,200,000 granted in two tranches in the form of restricted stock units with the following timeline and details:

• $700,000 will be set with a grant date as soon as administratively feasible after your start date. This award will vest ratably over three years from the date of the grant (1/3^rd on each of the first, second and third anniversaries from the date of grant), contingent on your continued employment with the company through each vesting date.

• $500,000 will be set with a grant date one year after the grant date of the first portion of the special equity grant, subject to your employment with the company at the grant date. This award will cliff vest in its entirety in two years (2021), contingent on your continued employment with the company on the vesting date.

The number of award shares will be based on the award values above divided by the closing stock price at the date of grant. The foregoing awards will be subject to the provisions of the Arconic Stock Incentive Plan at the time of grant.

Equity Ownership Requirements:

Consistent with Arconic’s efforts to align the company’s senior leadership with the interests of Arconic shareholders, the Board of Directors has adopted requirements on equity ownership for senior Arconic executives. The equity ownership requirement for executives at your level is currently two times base salary. Until equity ownership requirements are met, you are required to retain 50% of shares acquired upon vesting of restricted/performance shares or upon exercise of stock options, after deducting those used to pay for applicable taxes or the exercise price.

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Benefits:

You will be eligible to participate in Arconic employee benefit plans, including health care, life insurance, and disability coverage. Details of these plans will be sent to you separately.

Retirement Savings Plan:

Arconic offers a tax qualified 401(k) savings plan and a non-qualified deferred compensation plan to help you save toward retirement. Details will be sent to you separately and are subject to plan terms and conditions. Current company contributions are:

• 3% of your base salary and incentive compensation, and

• a match of your deferred pre-tax savings dollar-for-dollar up to 6% of your base pay.

Vacation:

You will be eligible for 4 weeks of paid vacation per year, in addition to company recognized holidays.

This offer is contingent upon the following conditions:

• Having successfully completed a pre-employment drug screen. You will need to present a photo ID at the time of your screening.

• Providing authorization and release for Arconic to conduct a comprehensive review of your background, the result of which is satisfactory to Arconic. The authorization and release will also be valid for subsequent reports during your period of employment with Arconic.

• Providing us with satisfactory references.

• Providing us with documentation in the original form establishing both your identity and your employment eligibility in the U.S.

• Signing the attached Employment Agreement.

• Signing the attached Non-Compete Agreement.

We believe that you have the leadership competencies and experience to make a significant contribution to the success of our company. We look forward to your positive contributions to our future. To accept our offer, please sign and date the bottom of this letter and return it to Vas Nair (vas.nair@arconic.com). If you have any questions please feel free to call either Vas or me.

I look forward to hearing from you soon.

Best Regards,

/s/ Chip Blankenship

Chip Blankenship

CEO

CC:    Vas Nair, EVP Human Resources

Non-Competition Agreement

I, Mark J. Krakowiak, am pleased to accept your offer of employment dated January 16, 2018 for the position of EVP Strategy & Development on the terms detailed in the offer letter.

I would like my start date with Arconic to be: January 24, 2018 and will fulfill the foregoing conditions before then.

Accepted by:                Date:

/s/ Mark J. Krakowiak        _             January 20, 2018    _    

Mark J. Krakowiak

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EX-10.KKK

Exhibit 10(kkk)

ARCONIC INC.

SPECIAL RETENTION AWARD AGREEMENT

Grant Date: [____________________]

The terms and conditions of this Global Special Retention Award Agreement, including Appendices A and B attached hereto, (the “Award Agreement”) are authorized by the Compensation and Benefits Committee of the Board of Directors. The special retention award (“Special Retention Award”) is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”).

Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Special Retention Award, the Participant must affirmatively accept the Award and the terms of this Award Agreement within 6 months of the grant date, as set forth in paragraph 30 of the Award Agreement.

General Terms and Conditions

1. The Special Retention Awards are subject to the provisions of the Plan and the provisions of the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company. A Special Retention Award is an undertaking by the Company to issue the number of Shares indicated in the notice of the Special Retention Award on the date the Special Retention Award vests, subject to the fulfillment of certain conditions, except to the extent otherwise provided in the Plan or herein.

Vesting and Payment

2. The Special Retention Award vests on the third anniversary date of the grant date, and will be paid to the Participant in Shares on the vesting date or within 90 days thereafter.

3. As a condition to a Special Retention Award vesting, a Participant must remain an active employee of the Company or a Subsidiary through the date of vesting. Except as provided in paragraph 5, if a Participant’s employment with the Company (including its Subsidiaries) is terminated prior to the vesting date of the Special Retention Award, the Special Retention Award is forfeited and is automatically canceled.

4. Special Retention Awards will be paid by the issuance to the Participant of Shares covered by the Special Retention Award. Prior to issuance of the Shares, the Participant has no voting rights. Dividend equivalents will accrue on Special Retention Awards, unless the Committee determines that no dividend equivalents may be accrued or paid. Dividend equivalents that accrue on Special Retention Awards will be equal to the common stock dividend per Share payable on the Company’s common stock multiplied by the number of Shares covered by the Special Retention Award. Notwithstanding any provision herein to the contrary, no dividends or dividend equivalents will be paid on Special Retention Awards that have not vested.

5. The following are exceptions to the vesting rules:

• Involuntary Termination without Cause: An unvested Special Retention Award held by a Participant who is involuntarily terminated without Cause (as defined below) from employment with the Company or a Subsidiary during the vesting period is not forfeited in whole but only in part upon termination of employment. The portion of the Special Retention Award that is not forfeited vests on the original stated vesting date set forth in paragraph 2 and is calculated based on a proportionate share of the time during the vesting period that the Participant remained actively employed with the Company or a Subsidiary, with the remaining portion being automatically forfeited. The proportionate share is computed on the basis of the actual number of days actively employed after the date of grant over a total vesting period of three years of 360 days each (or a total vesting period of 1,080 days). For example, a Participant who is involuntarily terminated without Cause from employment with the Company (or a Subsidiary) at the end of the first year of the three-year vesting period will receive one-third of the Shares upon vesting, with the remaining two-thirds of the Shares being automatically forfeited upon termination.

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For this purpose, if the Participant participates in the Arconic Inc. Change in Control Severance Plan, “Cause” shall have the meaning set forth in such plan. If the Participant does not participate in the Arconic Inc. Change in Control Severance Plan, “Cause” means (i) the willful and continued failure by the Participant to substantially perform the Participant’s duties with the Employer that has not been cured within 30 days after a written demand for substantial performance is delivered to the Participant by the Board or the Participant’s direct supervisor, which demand specifically identifies the manner in which the Participant has not substantially performed the Participant’s duties, (ii) the willful engaging by the Participant in conduct which is demonstrably and materially injurious to the Company or a Subsidiary, monetarily or otherwise; (iii) the Participant’s fraud or acts of dishonesty relating to the Company or any of its Subsidiaries, or (iv) the Participant’s conviction of any misdemeanor relating to the affairs of the Company or any of its Subsidiaries or indictment for any felony. For purposes of clauses (i) and (ii) of this definition, no act, or failure to act, on the Participant’s part shall be deemed “willful” unless done, or omitted to be done, by the Participant not in good faith and without reasonable belief that the Participant’s act, or failure to act, was in the best interest of the Company.

• Death or Disability: An unvested Special Retention Award held by a Participant, who dies while an employee or who is permanently and totally disabled while an employee, is not forfeited but vests on the original stated vesting date set forth in paragraph 2.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: A Special Retention Award vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan. If the Change in Control qualifies as a “change in control event” within the meaning of Treas. Reg. § 1.409-3(i)(5), the vested Special Retention Award will be paid to the Participant within 30 days following the Change in Control. If the Change in Control does not so qualify, the vested Special Retention Award will be paid to the Participant on the original stated vesting date set forth in paragraph 2.

• Termination Following Change in Control: As further described in the Plan, if a Replacement Award is provided following a Change in Control, but within 24 months of such Change in Control the Participant’s employment is terminated without Cause (as defined in the Arconic Inc. Change in Control Severance Plan) or by the Participant for Good Reason (as defined in the Arconic Inc. Change in Control Severance Plan), the Replacement Award will vest and will be paid to the Participant on the original stated vested date set forth in paragraph 2.

Taxes

6. All taxes required to be withheld under applicable tax laws in connection with a Special Retention Award must be paid by the Participant at the appropriate time under applicable tax laws. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, but will generally withhold from the Shares to be issued upon payment of the Special Retention Award that number of Shares with a fair market value on the vesting date equal to the taxes required to be withheld at the minimum required rates or, to the extent permitted under applicable accounting principles, at up to the maximum individual tax rate for the applicable tax jurisdiction, which include, for Participants subject to taxation in the United States, applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes. Notwithstanding the foregoing, if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended, the Company will withhold Shares from the Shares to be issued upon payment of the Special Retention Award, as described herein, and will not use the other means set forth in the Plan unless pursuant to an election by the Participant or in the event that withholding in Shares is problematic under applicable tax or securities law or has materially adverse accounting consequences. Further, notwithstanding anything herein to the contrary, the Company may cause a portion of the Special Retention Award to vest prior to the stated vesting date set forth in paragraph 2 in order to satisfy any Tax-Related Items that arise prior to the date of settlement of the Special Retention Award; provided that to the extent necessary to avoid a prohibited distribution under Section 409A of the Code, the portion of the Special Retention Award so accelerated and settled shall be with respect to a number of Shares with a value that does not exceed the liability for such Tax-Related Items.

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Beneficiaries

7. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Special Retention Awards that have not yet vested at the time of death of the Participant. All beneficiary designations will be on beneficiary designation forms approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com.

8. Beneficiary designations on an approved form will be effective at the time received by the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to the Communications Center on Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

9. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

10. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Special Retention Award prior to the death of the Participant who designated such beneficiary.

11. Unless the Participant indicates on the form that a named beneficiary is to receive Special Retention Awards only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled to share equally in the Special Retention Awards upon vesting. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Special Retention Awards.

12. Should a beneficiary die after the Participant but before the Special Retention Award is paid, such beneficiary’s rights and interest in the Special Retention Award will be transferable by the beneficiary’s last will and testament or by the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a Special Retention Award, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “percapita.”

13. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Special Retention Award that has not yet vested or been paid at the time of death of the Participant will vest and be paid to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution.

Adjustments

14. In the event of an Equity Restructuring, the Committee will equitably adjust the Special Retention Award as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Special Retention Award; and (ii) adjusting the terms and conditions of the Special Retention Award. The adjustments provided under this paragraph 14 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

15. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that the Special Retention Award will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

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Further, as an additional condition of receiving the Special Retention Award, the Participant agrees that the Special Retention Award and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Special Retention Award for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

16. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares issuable upon vesting of the Special Retention Awards, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

17. Non-Transferability. The Special Retention Award is non-transferable and may not be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by the Participant other than by will or the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against the Company; provided, that, the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

18. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Special Retention Award shall have vested and been paid in the form of Shares in accordance with the provisions of the Award Agreement.

19. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

20. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

21. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

22. Appendices. Notwithstanding any provisions in the Award Agreement, for Participants residing and/or working outside the United States, the Special Retention Award shall be subject to the additional terms and conditions set forth in Appendix A to the Award Agreement and to any special terms and conditions for the Participant’s country set forth in Appendix B to the Award Agreement. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitute part of the Award Agreement.

23. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Special Retention Award and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

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24. Compliance with Code Section 409A. It is intended that the Special Retention Award granted pursuant to the Award Agreement be compliant with Section 409A of the Code and the Award Agreement shall be interpreted, construed and operated to reflect this intent. Notwithstanding the foregoing, the Award Agreement and the Plan may be amended at any time, without the consent of any party, to the extent necessary or desirable to satisfy any of the requirements under Section 409A of the Code, but the Company shall not be under any obligation to make any such amendment. Further, the Company and its Subsidiaries do not make any representation to the Participant that the Special Retention Award granted pursuant to the Award Agreement satisfies the requirements of Section 409A of the Code, and the Company and its Subsidiaries will have no liability or other obligation to indemnify or hold harmless the Participant or any other party for any tax, additional tax, interest or penalties that the Participant or any other party may incur in the event that any provision of the Award Agreement or any amendment or modification thereof or any other action taken with respect thereto, is deemed to violate any of the requirements of Section 409A of the Code.

25. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

26. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

27. Governing Law and Venue. As stated in the Plan, the Special Retention Award and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Special Retention Award will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

28. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

29. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

30. As permitted by Section 15(c) of the Plan, receipt of this Special Retention Award is subject to the Participant’s acceptance of the Award and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Award, the Participant must provide such Acceptance within 6 months of the grant date of the Award. The date as of which the Participant’s Special Retention Award shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award will be cancelled in accordance with any administrative procedures adopted under the Plan.

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APPENDIX A

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Special Retention Award Agreement

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Special Retention Awards if the Participant resides and/or works outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Global Special Retention Award Agreement (the “Award Agreement”).

A. Termination. This provision supplements paragraph 3 of the Award Agreement.

The Company will determine when the Participant is no longer providing services for purposes of the Special Retention Awards (including whether the Participant may still be considered to be providing services while on a leave of absence).

B.    Responsibility for Taxes. This provision replaces paragraph 6 of the Award Agreement (except if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended).

The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Subsidiary that employs the Participant (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of these Special Retention Awards, including, but not limited to, the grant, vesting or settlement of Special Retention Awards, the subsequent sale of Shares acquired pursuant to the Special Retention Award and the receipt of any dividends or dividend equivalents; and (b) do not commit to and are under no obligation to structure the terms of the Special Retention Awards or any aspect of the Special Retention Awards to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. The Participant shall not make any claim against the Company, the Employer or any other Subsidiary, or their respective board, officers or employees related to Tax-Related Items arising from this Award. Furthermore, if the Participant has become subject to tax in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Participant will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: (i) requiring a cash payment from the Participant; (ii) withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer, (iii) withholding from the proceeds of the sale of Shares acquired pursuant to the Special Retention Awards, either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization without further consent); and/or (iv) withholding from the Shares subject to Special Retention Awards.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant may receive a refund of any over-withheld amount in cash (with no entitlement to the Share equivalent) or, if not refunded, the Participant may seek a refund from the local tax authorities. If the obligation for Tax-Related Items is satisfied by withholding in Shares, the Participant is deemed, for tax purposes, to have been issued the full number of Shares subject to the vested Special Retention Awards, notwithstanding that a number of the Shares is held back solely for the purpose of paying the Tax-Related Items.

Finally, the Participant shall pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Tax-Related Items.

C.    Nature of Award. In accepting the Special Retention Awards, the Participant acknowledges, understands and agrees that:

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      a.    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

      b.    this Special Retention Award is exceptional, voluntary and occasional and does not create any contractual or other right to receive future Special Retention Awards, or benefits in lieu of Special Retention Awards, even if Special Retention Awards have been granted in the past;

      c.    all decisions with respect to future Special Retention Awards or other Awards, if any, will be at the sole discretion of the Company;

      d.    this Special Retention Award and the Participant’s participation in the Plan shall not create a right to, or be interpreted as forming an employment or service contract with the Company and shall not interfere with the ability of the Employer to terminate the Participant’s employment contract (if any) at any time;

      e.    the Participant’s participation in the Plan is voluntary;

      f.    this Special Retention Award and the Shares acquired under the Plan, and the income from and value of same, are not intended to replace any pension rights or compensation;

      g.    this Special Retention Award and the Shares acquired under the Plan, and the income from and value of same, are not part of normal or expected compensation or salary for any purposes, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

      h.    the future value of the Shares subject to the Special Retention Award is unknown, indeterminable and cannot be predicted with certainty;

      i.    unless otherwise agreed with the Company, Special Retention Awards and the Shares acquired under the Plan, and the income from and value of same, are not granted as consideration for, or in connection with, the service the Participant may provide as a director of any Subsidiary;

      j.    no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Special Retention Award resulting from termination of the Participant’s employment and/or service relationship (for any reason whatsoever and regardless of whether later found to be invalid or in breach of applicable laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any);

      k.    unless otherwise provided in the Plan or by the Company in its discretion, this Special Retention Award and the benefits under the Plan evidenced by the Award Agreement do not create any entitlement to have this Special Retention Award or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

      l.    neither the Company, the Employer nor any other Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Special Retention Awards or of any amounts due to the Participant pursuant to the Special Retention Awards or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data as described in the Award Agreement and any other grant materials by and among, as applicable, the Company, the Employer and any other Subsidiary for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan.

The Participant understands that the Company and the Employer may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address and telephone number, email address, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all Special Retention Awards or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

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The Participant understands that Data may be transferred to Merrill Lynch, which is assisting the Company with the implementation, administration and management of the Plan. The Participant understands that the recipients of Data may be located in the United States or elsewhere, and that the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of Data by contacting the Participant’s local human resources representative. The Participant authorizes the Company, Merrill Lynch and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Participant’s consent is that the Company would not be able to grant this Special Retention Award or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of the Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.

Finally, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form (or any other agreements or consents) that the Company and/or the Employer may deem necessary to obtain from the Participant for the purpose of administering the Participant’s participation in the Plan in compliance with the data privacy laws in the Participant’s country, either now or in the future. The Participant understands and agrees that he or she will not be able to participate in the Plan if the Participant fails to provide such consent or agreement as requested by the Company and/or the Employer.

E. Language. The Participant acknowledges that he or she is sufficiently proficient in English to understand the terms and conditions of the Award Agreement. Furthermore, if the Participant has received the Award Agreement, or any other document related to this Special Retention Award and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

F. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, the broker’s country, or the country in which the Shares are listed, the Participant may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, which may affect his or her ability to accept, acquire, sell, or attempt to sell or otherwise dispose of Shares or rights to Shares (e.g., Special Retention Awards) or rights linked to the value of Shares, during such times as the Participant is considered to have “inside information” regarding the Company (as defined by applicable laws or regulations in the applicable jurisdictions, including the United States and the Participant’s country). Local insider trading laws and regulations may prohibit the cancellation or amendment of orders the Participant placed before possessing inside information. Furthermore, the Participant may be prohibited from (i) disclosing the inside information to any third party, including fellow employees (other than on a “need to know” basis) and (ii) “tipping” third parties or causing them to otherwise buy or sell securities. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

G. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant’s participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant’s compliance.

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APPENDIX B

TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Special Retention Award Agreement

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Global Special Retention Award Agreement (the “Award Agreement”).

Terms and Conditions

This Appendix B includes special terms and conditions that govern Special Retention Awards if the Participant resides and/or works in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or working, or if the Participant transfers to another country after the grant of Special Retention Awards or is considered a resident of another country for local law purposes, the Committee shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of December 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant’s country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently works and/or resides, or if the Participant transfers to another country after the grant of the Special Retention Award, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

Australia

Terms and Conditions

Australia Offer Document.

The grant of Special Retention Awards is intended to comply with the provisions of the Corporations Act, 2001, Australian Securities & Investments Commission (“ASIC”) Regulatory Guide 49 and ASIC Class Order 14/1000. Additional details are set forth in the Offer Document for Australian resident employees, which is being provided to the Participant with the Award Agreement.

Notifications

Exchange Control Information.

Exchange control reporting is required for cash transactions exceeding A$10,000 and for international fund transfers. If an Australian bank is assisting with the transaction, the bank will file the report on the Participant’s behalf.

Tax Information.

The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to conditions in the Act).

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Austria

Notifications

Exchange Control Information.

If the Participant holds Shares obtained through the Plan outside of Austria, the Participant must submit a report to the Austrian National Bank. An exemption applies if the value of the Shares as of any given quarter does not meet or exceed €30,000,000 or as of December 31 does not meet or exceed €5,000,000. If the former threshold is exceeded, quarterly obligations are imposed, whereas if the latter threshold is exceeded, annual reports must be given. If quarterly reporting is required, the reports must be filed by the fifteenth day of the month following the last day of the respective quarter. The annual reporting date is December 31 and the deadline for filing the annual report is January 31 of the following year.

When Shares are sold or cash dividends or dividend equivalent payments are received, there may be exchange control obligations if the cash received is held outside Austria. If the transaction volume of all the Participant’s accounts abroad meets or exceeds €10,000,000, the movements and balances of all accounts must be reported monthly, as of the last day of the month, on or before the fifteenth of the following month.

Belgium

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a Belgian resident, the Participant is required to report any bank accounts opened and maintained outside of Belgium (e.g., brokerage accounts opened in connection with the Plan) on his or her annual tax return. In a separate report, the Participant is required to provide the National Bank of Belgium with certain details regarding such foreign accounts (including the account number, bank name and country in which any such account was opened). This report, as well as additional information on how to complete it, can be found on the website of the National Bank of Belgium, www.nbb.be, under Kredietcentrales / Centrales des crédits caption. The Participant should consult with his or her personal tax advisor to determine his or her personal reporting obligations.

Stock Exchange Tax.

From January 1, 2017, a stock exchange tax applies to transactions executed through a non-Belgian financial intermediary. The stock exchange tax likely will apply when the Shares are sold. The Participant should consult with his or her personal tax advisor to determine his or her obligations with respect to the stock exchange tax.

Brazil

Terms and Conditions

Compliance with Law.

By accepting the Special Retention Award, the Participant acknowledges that he or she agrees to comply with applicable Brazilian laws and to pay any and all applicable taxes associated with the vesting of Special Retention Awards, the sale of the Shares acquired under the Plan and the receipt of any dividends.

Acknowledgement of Nature of the Grant. This provision supplements paragraph C “Nature of Award” of Appendix A.

By accepting the Special Retention Awards, the Participant agrees that he or she is making an investment decision, the Shares will be issued to the Participant only if the vesting conditions are met and any necessary services are rendered by the Participant over the vesting period, and the value of the underlying Shares is not fixed and may increase or decrease in value over the vesting period without compensation to the Participant.

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Notifications

Exchange Control Information.

If the Participant is a resident of or domiciled in Brazil, he or she will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of the assets and rights is equal to or greater than US$100,000. If such amount exceeds US$100,000,000, the declaration must be submitted quarterly. Assets and rights that must be reported include Shares acquired under the Plan.

Tax on Financial Transactions (IOF).

Repatriation of funds (e.g., sale proceeds) into Brazil and the conversion of USD into BRL associated with such fund transfers may be subject to the Tax on Financial Transactions. It is the Participant’s responsibility to comply with any applicable Tax on Financial Transactions arising from the Participant’s participation in the Plan. The Participant should consult with his or her personal tax advisor for additional details.

Canada

Terms and Conditions

Award Settled Only in Shares.

Notwithstanding any discretion in the Plan, the Special Retention Award shall be settled in Shares only. The Participant is not entitled to receive a cash payment pursuant to the Award.

Termination of Service. The following provision replaces paragraph A “Termination” of Appendix A.

For purposes of the Special Retention Award, the Participant’s employment relationship will be considered terminated (regardless of the reason for such termination and whether or not later found to be invalid or in breach of Canadian laws or the terms of the Participant’s employment agreement, if any) effective as of the date that is the earlier of (i) the date of the Participant’s termination, (ii) the date the Participant receives notice of termination, or (iii) the date the Participant is no longer actively providing service and will not be extended by any notice period (e.g., active service would not include any contractual notice period or any period of “garden leave” or similar period mandated under Canadian laws or the terms of the Participant’s employment agreement, if any). Unless otherwise expressly provided in the Award Agreement or determined by the Company, the Participant’s right to vest in the Special Retention Awards, if any, will terminate on such date. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing service for purposes of the Special Retention Award (including whether the Participant may still be considered to be providing services while on a leave of absence).

The Following Provisions Apply for Participants Resident in Quebec:

Consent to Receive Information in English.

The Participant acknowledges that it is the express wish of the parties that the Award Agreement, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be written in English.

Les parties reconnaissent avoir exigé la rédaction en anglais de Conditions d’attribution, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement à, la présente convention.

Authorization to Release and Transfer Necessary Personal Information. The following provision supplements paragraph D “Data Privacy” of Appendix A.

The Participant hereby authorizes the Company and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the administration and operation of the Plan. The Participant further authorizes the Company, any Subsidiary and the administrator of the Plan to disclose and discuss the Plan with their advisors. The Participant further authorizes the Company and any Subsidiary to record such information and to keep such information in the Participant’s Employee file.

B-3

Notifications

Securities Law Information.

The Participant acknowledges that he or she is permitted to sell the Shares acquired under the Plan through the designated broker appointed by the Company, provided the sale of the Shares takes place outside of Canada through facilities of a stock exchange on which the Shares are listed (i.e., the NYSE).

Foreign Asset/Account Reporting Information.

Canadian residents are required to report to the tax authorities certain foreign property (including the Special Retention Awards) on form T1135 (Foreign Income Verification Statement) if the total cost of the foreign property exceeds C$100,000 at any time in the year. The form must be filed by April 30 of the following year. Special Retention Awards must be reported-generally at a nil cost-if the C$100,000 cost threshold is exceeded because of other foreign property the Participant holds. If Shares are acquired, their cost generally is the adjusted cost base (“ACB”) of the Shares. The ACB would normally equal the fair market value of the Shares at vesting, but if the Participant owns other Shares, this ACB may have to be averaged with the ACB of the other Shares. The Participant should consult with his or her personal legal advisor to ensure compliance with applicable reporting obligations.

China

Terms and Conditions

The following terms and conditions will apply to Participants who are subject to exchange control restrictions and regulations in the People’s Republic of China (“the PRC”), including the requirements imposed by the State Administration of Foreign Exchange (“SAFE”), as determined by the Company in its sole discretion:

Termination of Employment.

Due to exchange control laws in the PRC, the Participant agrees that the Company reserves the right to require the sale of any Shares acquired at vesting of the Special Retention Awards upon the termination of the Participant’s employment for any reason. If the Company, in its discretion, does not exercise its right to require the automatic sale of Shares issuable upon vesting of the Special Retention Awards, as described in the preceding sentence, the Participant understands and agrees that any Shares acquired by the Participant under the Plan must be sold no later than six (6) months after termination of the Participant’s employment, or within any other such time frame as permitted by the Company or required by SAFE. The Participant understands that any Shares acquired under the Plan that have not been sold within six (6) months of the Participant’s termination of employment will be automatically sold by a designated broker at the Company’s discretion, pursuant to this authorization by the Participant.

The Participant agrees that the Company is authorized to instruct its designated broker to assist with the mandatory sale of such Shares (on the Participant’s behalf, pursuant to this authorization) and the Participant expressly authorizes the Company’s designated broker to complete the sale of such Shares. The Participant also agrees to sign any agreements, forms, and/or consents that may be reasonably requested by the Company (or the designated broker) to effectuate the sale of the Shares (including, without limitation, as to the transfers of the proceeds and other exchange control matters noted below) and shall otherwise cooperate with the Company with respect to such matters, provided that the Participant shall not be permitted to exercise any influence over how, when or whether the sales occur. The Participant acknowledges that the Company’s designated broker is under no obligation to arrange for the sale of the Shares at any particular price.  Due to fluctuations in the Share price and/or applicable exchange rates between vesting and (if later) the date on which the Shares are sold, the amount of proceeds ultimately distributed to the Participant may be more or less than the market value of the Shares upon vesting (which is the amount relevant to determining the Participant’s liability for Tax-Related Items). The Participant understands and agrees that the Company is not responsible for the amount of any loss the Participant may incur and the Company assumes no liability for any fluctuations in the Share price and/or any applicable exchange rate.

Upon the sale of the Shares, the Company agrees to pay the cash proceeds from the sale (less any Tax-Related Items, brokerage fees and commissions) to the Participant in accordance with the applicable exchange control laws and regulations, including but not limited to the restrictions set forth in this Appendix B for China below under “Exchange Control Restrictions.”

B-4

Exchange Control Restrictions.

The Participant understands and agrees that, pursuant to local exchange control requirements, the Participant will be required to immediately repatriate any cash payments or proceeds obtained with respect to participation in the Plan to the PRC. The Participant further understands that such repatriation of any cash payments or proceeds may need to be effectuated through a special exchange control account established by the Company or any Subsidiary, and the Participant hereby consents and agrees that any payment or proceeds may be transferred to such special account prior to being delivered to the Participant.

Any payment or proceeds may be paid to the Participant in U.S. dollars or local currency at the Company’s discretion. If the payments or proceeds are paid to the Participant in U.S. dollars, the Participant will be required to set up a U.S. dollar bank account in the PRC (if the Participant does not already have one) so that the payments or proceeds may be deposited into this account. If the payments or proceeds are paid to the Participant in local currency, the Company is under no obligation to secure any particular currency exchange rate and the Company may face delays in converting the payments or proceeds to local currency due to exchange control restrictions. The Participant agrees to bear any currency exchange rate fluctuation risk between the time the cash proceeds are received and the time the cash proceeds are distributed to the Participant through the special account described above.

The Participant further agrees to comply with any other requirements that may be imposed by the Company in the future to facilitate compliance with exchange control requirements in the PRC.

Notifications

Exchange Control Information.

PRC residents may be required to report to SAFE all details of their foreign financial assets and liabilities, as well as details of any economic transactions conducted with non-PRC residents.

France

Terms and Conditions

Language Consent.

By accepting the grant of Special Retention Awards and the Award Agreement, which provides for the terms and conditions of your Special Retention Awards, the Participant confirms having read and understood the documents relating to this Award (the Plan and the Award Agreement, including this Appendix) which were provided to the Participant in English. The Participant accepts the terms of those documents accordingly.

En acceptant l’Attribution d’Actions Attribuées et ce Contrat d’Attribution qui contient les termes et conditions des Actions Attribuées, le Participant confirme avoir lu et compris les documents relatifs à cette attribution (le Plan et le Contrat d’Attribution, ainsi que les Annexes) qui ont été transmis au Participant en langue anglaise. Le Participant accepte ainsi les conditions et termes de ces documents.

Notifications

Tax Information.

The Special Retention Awards are not intended to be French tax-qualified awards.

Foreign Asset/Account Reporting Information.

French residents are required to report all foreign accounts (whether open, current or closed) to the French tax authorities when filing their annual tax returns. The Participant should consult with his or her personal advisor to ensure compliance with applicable reporting obligations.

B-5

Germany

Notifications

Exchange Control Information.

If the Participant receives cross-border payments in excess of €12,500 in connection with the sale of securities (including Shares acquired under the Plan) or the receipt of any dividends or dividend equivalent payments, such payment must be reported monthly to the German Federal Bank (Bundesbank).  The Participant is responsible for the reporting obligation and should file the report electronically by the fifth day of the month following the month in which the payment is made. A copy of the report (“Allgemeines Meldeportal Statistik”) can be accessed via Bundesbank’s website (www.bundesbank.de) and is available in both German and English.

Hungary

There are no country-specific provisions.

India

Notifications

Exchange Control Information.

Indian residents are required to repatriate to India all proceeds received from the sale of Shares within 90 days of receipt and any dividends or dividend equivalent payments within 180 days of receipt, or within such other period of time as may be required under applicable regulations. The Participant must maintain the foreign inward remittance certificate received from the bank where the foreign currency is deposited in the event that the Reserve Bank of India or the Company requests proof of repatriation. It is the Participant’s responsibility to comply with applicable exchange control laws in India.

Foreign Asset/Account Reporting Information.

The Participant is required to declare any foreign bank accounts and any foreign financial assets (including Shares held outside India) in the Participant’s annual tax return. The Participant is responsible for complying with this reporting obligation and should confer with his or her personal tax advisor in this regard.

Japan

Notifications

Foreign Asset/Account Reporting Information.

The Participant will be required to report details of any assets held outside of Japan as of December 31 (including any Shares acquired under the Plan) to the extent such assets have a total net fair market value exceeding ¥50,000,000. Such report will be due by March 15 of the following year. The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies to the Participant and whether the Participant will be required to report details of any outstanding Special Retention Awards, Shares or cash held by the Participant in the report.

Korea

Notifications

Exchange Control Information.

Exchange control laws require Korean residents who realized US$500,000 or more from the sale of Shares or the receipt of dividends in a single transaction before July 18, 2017 to repatriate the proceeds back to Korea within three years of the sale/receipt.

B-6

Foreign Asset/Account Reporting Information.

If the Participant is a Korean resident, the Participant must declare all of his or her foreign financial accounts (including any brokerage account) to the Korean tax authority and file a report with respect to such accounts if the value of such accounts exceeds KRW 1 billion (or an equivalent amount in foreign currency). The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies.

Mexico

Terms and Conditions

Policy Statement.

The Special Retention Award is a unilateral and discretionary award and, therefore, the Company reserves the absolute right to amend it and discontinue it at any time without any liability.

The Company, with offices at 390 Park Avenue, New York City, New York, 10022 U.S.A., is solely responsible for the administration of the Plan, and participation in the Plan and the Award of the Special Retention Award does not, in any way, establish an employment relationship between the Participant and the Company since the Participant is participating in the Plan on a wholly commercial basis and the sole employer is a Mexican Subsidiary, nor does it establish any rights between the Participant and the Employer.

Plan Document Acknowledgment.

By accepting the Special Retention Awards, the Participant acknowledges that he or she has received copies of the Plan, has reviewed the Plan and the Award Agreement in their entirety, and fully understands and accepts all provisions of the Plan and the Award Agreement, including the Appendices.

In addition, the Participant expressly approves that: (i) participation in the Plan does not constitute an acquired right; (ii) the Plan and participation in the Plan is offered by the Company on a wholly discretionary basis; (iii) participation in the Plan is voluntary; and (iv) neither the Company nor any Subsidiary is responsible for any decrease in the value of the Shares acquired upon vesting of the Special Retention Awards.

Finally, the Participant hereby declares that he or she does not reserve any action or right to bring any claim against the Company for any compensation or damages as a result of his or her participation in the Plan and therefore grant a full and broad release to the Employer, the Company and its other Subsidiaries with respect to any claim that may arise under the Plan.

Spanish Translation

Declaración de Política.

El Otorgamiento de Unidades de Acciones Restringidas es un otorgamiento unilateral y discrecional y, por lo tanto, la Compañía se reserva el derecho absoluto de modificar y discontinuar el Plan en cualquier tiempo, sin responsabilidad alguna.

La Compañía, con oficinas registradas ubicadas en 390 Park Avenue, New York, New York 10022 U.S.A., es únicamente responsable de la administración del Plan, y la participación en el Plan y el Otorgamiento de Unidades de Acciones Restringidas no establecen, de forma alguna, una relación de trabajo entre el Participante y la Compañía, ya que el Participante está participando en el Plan sobre una base comercial y el único patrón es una Afiliada Mexicana y tampoco establece ningún derecho entre usted y el Patrón.

Reconocimiento del Documento del Plan.

Al aceptar el Otorgamiento de las Unidades de Acciones Restringidas, el Participante reconoce que ha recibido copias del Plan, ha revisado el Plan y los Términos del Otorgamiento en su totalidad y que entiende y acepta completamente todas las disposiciones contenidas en el Plan y en los Términos del Otorgamiento, incluyendo los Apéndices.

B-7

Adicionalmente, el Participante aprueba expresamente que (i) la participación en el Plan no constituye un derecho adquirido; (ii) el Plan y la participación en el Plan se ofrecen por la Compañía de forma enteramente discrecional; (iii) la participación en el Plan es voluntaria; y (iv) la Compañía, cualquier Filial y el Patrón no son responsables por cualquier disminución en el valor de las Acciones adquiridas al momento de tener derecho en relación con las Unidades de Acciones Restringidas.

Finalmente, el Participante declara que no se reserva ninguna acción o derecho para interponer una reclamación o demanda en contra de la Compañía por compensación, daño o perjuicio alguno como resultado de su participación en el Plan y, por lo tanto, otorga el más amplio y total finiquito al Patrón, la Compañía y sus Filiales en relación con cualquier reclamación demanda que pudiera surgir de conformidad con el Plan.

Netherlands

There are no country-specific provisions.

Russia

Terms and Conditions

U.S. Transaction.

The Participant understands that the grant of the Special Retention Award is a right to receive Shares if certain conditions are met and that the offer is made by the Company in the United States. Upon vesting of the Special Retention Award, any Shares to be issued to the Participant shall be delivered to the Participant through a brokerage account in the United States.

Notifications

Exchange Control Information.

Under current exchange control regulations, within a reasonably short time after the sale of Shares acquired upon vesting of the Special Retention Award or the receipt of dividend equivalent payments, the Participant is required to repatriate such funds received in connection with the Plan to the Participant’s bank account in Russia prior to using those proceeds for any purpose including reinvestments. Such proceeds must be initially credited to the Participant through a foreign currency account at an authorized bank in Russia. After the proceeds are initially received in Russia, they may be further remitted to foreign banks in accordance with Russian exchange control laws. The Participant is strongly encouraged to contact the Participant’s personal advisor to confirm the applicable Russian exchange control rules because significant penalties may apply in the case of non-compliance and because exchange control requirements may change.

Securities Law Information.

The Participant is not permitted to sell Shares directly to other Russian legal entities or residents.

The grant of the Special Retention Awards and the distribution of the Plan and all other materials the Participant may receive regarding participation in the Plan do not constitute an offering or the advertising of securities in Russia. The issuance of Shares pursuant to the Plan has not and will not be registered in Russia and, therefore, the Shares may not be used for an offering or public circulation in Russia. In no event will Shares be delivered to the Participant in Russia; all Shares acquired under the Plan will be maintained on the Participant’s behalf in the United States.

Data Privacy Acknowledgement.

The Participant hereby acknowledges that he or she has read and understands the terms regarding collection, processing and transfer of Data contained in Appendix A to the Award Agreement and by participating in the Plan, the Participant agrees to such terms. In this regard, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form to the Company or the Employer (or any other agreements or consents that may be required by the Company or the Employer) that the Company and/or the Employer may deem necessary to obtain under the data privacy laws of Russia, either now or in the future.

B-8

Labor Law Information.

If the Participant continues to hold Shares after involuntary termination, the Participant may not be eligible to receive unemployment benefits in Russia.

Anti-Corruption Legislation Information.

Individuals holding public office in Russia, as well as their spouses and dependent children, may be prohibited from opening or maintaining a foreign brokerage or bank account and holding any securities, whether acquired directly or indirectly, in a foreign company (including Shares acquired under the Plan). The Participant is strongly advised to consult with his or her personal legal advisor to determine whether the restriction applies to the Participant.

Spain

Terms and Conditions

No Entitlement for Claims or Compensation. The following provisions supplement paragraph A “Termination” of Appendix A.

By accepting the Special Retention Award, the Participant consents to participation in the Plan and acknowledges that Participant has received a copy of the Plan.

The Participant understands and agrees that, as a condition of the grant of the Special Retention Award, if the Participant’s employment terminates, unless otherwise provided in the Award Agreement or by the Company, any unvested Special Retention Awards shall be forfeited without entitlement to the underlying Shares or to any amount as indemnification in the event of a termination, including, but not limited to: resignation, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’ Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985.

The Participant understands that the Company has unilaterally, gratuitously and in its sole discretion decided to grant Special Retention Awards under the Plan to individuals who may be Employees of the Company or a Subsidiary. The decision is limited and entered into based upon the express assumption and condition that any Special Retention Awards will not economically or otherwise bind the Company or any Subsidiary, including the Employer, on an ongoing basis, other than as expressly set forth in the Award Agreement. Consequently, the Participant understands that the Special Retention Awards are granted on the assumption and condition that the Special Retention Awards shall not become part of any employment or service agreement (whether with the Company or any Subsidiary, including the Employer) and shall not be considered a mandatory benefit, salary for any purpose (including severance compensation) or any other right whatsoever. Furthermore, the Participant understands and freely accepts that there is no guarantee that any benefit whatsoever shall arise from the grant of Special Retention Awards, which is gratuitous and discretionary, since the future value of the Special Retention Awards and the underlying Shares is unknown and unpredictable. The Participant also understands that the grant of Special Retention Awards would not be made but for the assumptions and conditions set forth hereinabove; thus, the Participant understands, acknowledges and freely accepts that, should any or all of the assumptions be mistaken or any of the conditions not be met for any reason, the Special Retention Award and any right to the underlying Shares shall be null and void.

Notifications

Securities Law Information.

No “offer of securities to the public”, as defined under Spanish law, has taken place or will take place in the Spanish territory with respect to the Special Retention Award. No public offering prospectus has been nor will be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission) (“CNMV”). Neither the Plan nor the Award Agreement constitute a public offering prospectus and they have not been, nor will they be, registered with the CNMV.

B-9

Exchange Control Information.

It is the Participant’s responsibility to comply with exchange control regulations in Spain. The Participant must declare the acquisition of Shares for statistical purposes to the Spanish Direccion General de Comercio e Inversiones (the “DGCI”) of the Ministry of Economy and Competitiveness. In addition, the Participant must also file a Form D-6 with the Directorate of Foreign Transaction each January in which the Shares are owned. The sale of Shares also must be declared on Form D-6 filed with the DGCI in January, unless the sale proceeds exceed the applicable threshold (currently €1,502,530), in which case, the filing is due within one month after the sale.

Foreign Asset/Account Reporting Information.

The Participant is required to declare electronically to the Bank of Spain any securities accounts (including brokerage accounts held abroad), as well as the Shares held in such accounts if the value of the transactions during the prior tax year or the balances in such accounts as of December 31 of the prior tax year exceed €1,000,000.

Further, to the extent that the Participant holds Shares and/or has bank accounts outside Spain with a value in excess of €50,000 (for each type of asset) as of December 31, the Participant will be required to report information on such assets on his or her tax return (tax form 720) for such year. After such Shares and/or accounts are initially reported, the reporting obligation will apply for subsequent years only if the value of any previously-reported Shares or accounts increases by more than €20,000 or if the Participant sells or otherwise disposes of any previously-reported Shares or accounts.

Switzerland

Notifications

Securities Law Information.

The grant of the Special Retention Award under the Plan is considered a private offering in Switzerland and is, therefore, not subject to registration in Switzerland. Neither this document nor any other material related to the Special Retention Award constitutes a prospectus as such term is understood pursuant to Article 652a of the Swiss Code of Obligations, and neither this document nor any other materials related to the Special Retention Award may be publicly distributed or otherwise made publicly available in Switzerland. Neither this document nor any other offering or marketing materials relating to the Special Retention Awards have been or will be filed with, approved or supervised by any Swiss regulatory authority (in particular, the Swiss Financial Market Supervisory Authority (FINMA)).

United Kingdom

Terms and Conditions

Responsibility for Taxes. The following supplements paragraph B “Responsibility for Taxes” of Appendix A:

Without limitation to paragraph B “Responsibility for Taxes” of Appendix A, the Participant agrees that the Participant is liable for all Tax-Related Items and hereby covenants to pay all such Tax-Related Items as and when requested by the Company or the Employer or by Her Majesty’s Revenue & Customs (“HMRC”) (or any other tax authority or any other relevant authority). The Participant also agrees to indemnify and keep indemnified the Company and the Employer against any Tax-Related Items that they are required to pay or withhold or have paid or will have to pay to HMRC (or any other tax authority or any other relevant authority) on the Participant’s behalf.

Notwithstanding the foregoing, if the Participant is a Director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934), the Participant may not be able to indemnify the Company or the Employer for the amount of any income tax not collected from or paid by the Participant, as it may be considered a loan. In this case, the amount of any uncollected income tax may constitute a benefit to the Participant on which additional income tax and employee National Insurance contributions (“NICs”) may be payable. The Participant agrees to report and pay any income tax due on this additional benefit directly to HMRC under the self-assessment regime and to pay the Employer for the value of the employee NICs due on this additional benefit, which the Company or the Employer may recover from the Participant by any of the means referred to in the Award Agreement, including the Appendices.

B-10

EX-10.L(1)

Exhibit 10(l)(1)

FIRST AMENDMENT TO ARCONIC

EMPLOYEES’ EXCESS BENEFITS PLAN C

(as amended and restated effective August 1, 2016)

Pursuant to Section 5.1 of the Arconic Employees’ Excess Benefits Plan C (“Plan”), the Plan is amended effective January 1, 2018, as follows:

1.    Section 2.9 of the Plan shall be amended and restated to require that a Participant who terminates employment on or after January 1, 2018 will be distributed his or her benefit in the form of an immediate lump sum where the present value of such Participant’s nonqualified benefits under all nonqualified defined benefit plans of Arconic Inc. and all members of its controlled group of corporations, not otherwise payable under the provisions of the Plan, shall be equal to or less than the Internal Revenue Code Section 402(g) limit, as follows (with new language underlined and deleted language stricken):

“2.9 Notwithstanding any provision to the contrary in this Excess Plan, if at any time the present value of a Participant’s nonqualified benefits under all nonqualified defined benefit plans of the Company and all members of its controlled group of corporations, not otherwise payable under the provisions of the Plan, shall be equal to or less than the Code Section 402(g) limit in effect at the time of any payment event (for 20162017, $18,000 or less and as adjusted from time to time by the Internal Revenue Service):,

(i) The Company may, in the sole and absolute discretion of the Company, elect to distribute the entire Excess Benefits to the Participant in the form of a lump sum payment, in lieu of any other Excess Benefits payable under the Plan; or

(ii) If the participant terminates employment with the Company, Arconic Inc., or any subsidiary of Arconic Inc., on or after January 1, 2018, the participant’s entire benefit under this Plan shall be distributed immediately in the form of a lump sum, in lieu of any other benefit payable under the Plan.

The present value shall be determined by the Company, in the sole and absolute discretion of the Company, using reasonable actuarial assumptions. The distribution of the lump sum shall be made as soon as reasonably practicable, but no later than ninety (90) days after a payment event or two and one-half (2 ½) months after the year of the payment event, whichever is later. ThisAnypayment under this subsection shall extinguish any and all liability under this Excess Plan and any and all the plans from which the lump sum is provided.”

2.    In all other respects, the Plan is ratified and confirmed.

EX-10.L(2)

Exhibit 10(l)(2)

SECOND AMENDMENT TO ARCONIC

EMPLOYEES’ EXCESS BENEFITS PLAN C

(as amended and restated effective August 1, 2016)

Pursuant to Section 5.1 of the Arconic Employees’ Excess Benefits Plan C (“Plan”), the Plan is amended effective January 1, 2018, as follows:

1.    Article I (“Definitions”) of the Plan shall be amended by deleting definition of “Committee” therefrom.

2.     Article I (“Definitions”) of the Plan shall be amended by inserting the following definitions of “Benefits Investments Committee” and “Benefits Management Committee” therein:

“Benefits Investments Committee” means the Benefits Investments Committee of Arconic Inc., which shall have authority over the investment and management of any and all corporate assets attributable or allocated to this Excess Plan (to the extent that this Excess Plan becomes funded). Prior to January 1, 2018, such authority was vested in the Benefits Management Committee.

“Benefits Management Committee” means the Benefits Management Committee of Arconic Inc. (previously known as the Benefits Management Committee of Alcoa Inc.), which shall have powers over administration of this Excess Plan as provided herein.

3.    Article I (“Definitions”) of the Plan shall be amended by restating the definition of “Company” as follows (with new language underlined and deleted language stricken):

“Company” means Arconic Inc. (previously known as Alcoa Inc.).Alcoa Inc. It is contemplated that Alcoa Inc. will formally change its corporate name to Arconic Inc. in the second half of 2016.

4.    References in the Plan to the “Committee” in the following sections shall be revised to be references to the “Benefits Management Committee”: 2.4, 4.1, 5.1, 7.1 and 8.1.

5.    Section 3.1 of the Plan shall be amended by inserting the following sentence at the end thereof:

To the extent that this Excess Plan becomes funded in the future, the Benefits Investments Committee shall have authority over the investment and management of any and all corporate assets attributable or allocated to this Excess Plan. In this regard, the Benefits Investments Committee shall have the authority to approve, to adopt, to amend, to merge and to terminate any trust established to secure any such assets.

6.    In all other respects, the Plan is ratified and confirmed.

EX-10.OO(1)

Exhibit 10(oo)(1)

FIRST AMENDMENT TO THE

RTI INTERNATIONAL METALS, INC. 2014 STOCK AND INCENTIVE PLAN, AS AMENDED AND

ASSUMED BY ARCONIC INC.

This First Amendment (this “Amendment”) to the RTI International Metals, Inc. 2014 Stock and Incentive Plan, as amended and assumed by Arconic Inc. (the “2014 RTI Plan”) (all capitalized terms not defined herein shall have the meanings ascribed to them in the 2014 RTI Plan) is adopted as of January 19, 2018 by the Board of Directors of Arconic Inc. (the “Company”).

1.The definition of “Affiliate” or “Affiliated Company” in Section 2(c) of the 2014 RTI Plan is hereby amended and restated in its entirety to read as follows:

“Affiliate” shall have the meaning set forth in Rule 12b-2 under Section 12 of the Exchange Act.”

2.The definition of Change of Control in Section 2(g) of the 2014 RTI Plan is hereby amended and restated in its entirety to read as follows:

“Change in Control” means the occurrence of an event set forth in any one of the following paragraphs:

(i)    any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act) (a “Person”) becomes the beneficial owner (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 30% or more of either (A) the then-outstanding Stock (the “Outstanding Company Common Stock”) or (B) the combined voting power of the then-outstanding voting securities of the Company entitled to vote generally in the election of directors (the “Outstanding Company Voting Securities”); provided, however, that, for purposes hereof, the following acquisitions shall not constitute a Change of Control: (1) any acquisition directly from the Company, (2) any acquisition by the Company, (3) any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the Company or any of its Affiliates or (4) any acquisition pursuant to a transaction that complies with clauses (A), (B), and (C) of paragraph (iii) of this definition;

(ii) individuals who, as of May 24, 2017, constituted the Board (the “Incumbent Board”) cease for any reason to constitute at least a majority of the Board; provided, however, that any individual becoming a director subsequent to May 24, 2017 whose election, or nomination for election by the Company’s shareholders, was approved by a vote of at least two-thirds of the directors then comprising the Incumbent Board shall be considered as though such individual was a member of the Incumbent Board; but, provided, further, that any such individual whose initial assumption of office occurs as a result of an actual or threatened election contest with respect to the election or removal of directors or other actual or threatened solicitation of proxies or consents by or on behalf of a Person other than the Board shall not be considered a member of the Incumbent Board unless and until such individual is elected to the Board at an annual meeting of the Company occurring after the date such individual initially assumed office, so long as such election occurs pursuant to a nomination approved by a vote of at least two-thirds of the directors then comprising the Incumbent Board, which nomination is not made pursuant to a Company contractual obligation;

(iii) consummation of a reorganization, merger, statutory share exchange or consolidation or similar transaction involving the Company or any of its Subsidiaries, a sale or other disposition of all or substantially all of the assets of the Company, or the acquisition of assets or stock of another entity by the Company or any of its Subsidiaries (each, a “Business Combination”), in each case unless, following such Business Combination, (A) all or substantially all of the individuals and entities that were the beneficial owners of the Outstanding Company Common Stock and the Outstanding Company Voting Securities immediately prior to such Business Combination beneficially own, directly or indirectly, 55% or more of the then-outstanding shares of common stock (or, for a non-corporate entity, equivalent securities) and the combined voting power of the then-outstanding voting securities entitled to vote generally in the election of directors (or, for a non-corporate entity, equivalent governing body), as the case may be, of the entity resulting from such Business Combination (including, without limitation, an entity that, as a result of such transaction, owns the Company or all or substantially all of the Company’s assets either directly or through one or more Subsidiaries) in substantially the same proportions as their ownership immediately prior to such Business Combination of the Outstanding Company Common Stock and the Outstanding Company Voting Securities, as the case may be, (B) no Person (excluding any corporation resulting from such Business Combination or any employee benefit

1

plan (or related trust) of the Company or such corporation resulting from such Business Combination) beneficially owns, directly or indirectly, 30% or more of, respectively, the then-outstanding shares of common stock (or, for a non-corporate entity, equivalent securities) of the entity resulting from such Business Combination or the combined voting power of the then-outstanding voting securities of such entity entitled to vote generally in the election of directors (or, for a non-corporate entity, equivalent securities), except to the extent that such ownership existed prior to the Business Combination, and (C) at least a majority of the members of the board of directors (or, for a non-corporate entity, equivalent governing body) of the entity resulting from such Business Combination were members of the Incumbent Board at the time of the execution of the initial agreement or of the action of the Board providing for such Business Combination; or

(d) the shareholders of the Company approve a plan of complete liquidation or dissolution of the Company.

3.     The definition of Person in Section 2(bb) of the 2014 RTI Plan is hereby deleted and replaced with “[Reserved.]”

4.    Except as expressly amended hereby, the terms and conditions of the 2014 RTI Plan shall remain in full force and effect. Section 23(i) of the Plan (Governing Law) shall apply to this Amendment as if set forth herein.

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EX-10.P

Exhibit 10(p)

ARCONIC INC.

NON-EMPLOYEE DIRECTOR COMPENSATION POLICY

Effective December 5, 2017, except as otherwise stated herein

1.General. This Non-Employee Director Compensation Policy (the "Policy"), sets forth the cash and equity-based compensation that has been approved by the Board of Directors (the "Board") of Arconic Inc., a Pennsylvania corporation, (the "Company") as payable to eligible non-employee members of the Board ("Non-Employee Directors"), as of December 5, 2017 or such other date stated herein. The cash and equity-based compensation described in this Policy shall be paid or be made, as applicable, automatically and without further action of the Board, to each Non-Employee Director who may be eligible to receive such compensation. This Policy shall remain in effect until it is revised or rescinded by further action of the Board. The terms and conditions of this Policy shall supersede any prior cash or equity compensation arrangements between the Company and its Non-Employee Directors. As of December 31, 2017, Arconic Inc. will reincorporate in Delaware via merger with a newly formed Delaware-incorporated subsidiary, and as from such reincorporation date, references to the "Company" herein shall be with respect to such Delaware corporation.

2.Cash Compensation.

(a) Annual Retainers. Each Non-Employee Director shall be eligible to receive an annual cash retainer of $120,000 for service on the Board. In addition, a Non-Employee Director shall receive the following additional annual retainers, as applicable:

Non-Employee Director Position	Additional Annual Cash Retainer Fee
Chairman of the Board	$300,000(1)
Audit Committee Chair Fee (includes Audit Committee Member Fee)	$27,500
Audit Committee Member Fee	$11,000
Compensation and Benefits Committee Chair Fee	$20,000
Other Committee Chair Fee	$16,500

⁽¹⁾ Effective as of October 23, 2017.

(b) Payment of Retainers. The annual retainers described in Section 2(a) shall be earned on a quarterly basis based on a calendar quarter and shall be paid by the Company in arrears not later than the third business day following the end of each calendar quarter (if not deferred by the Non-Employee Director in accordance with subsection (d) hereof). In the event a Non-Employee Director does not serve as a Non-Employee Director, or in the applicable positions described in Section 2(a), for an entire calendar quarter, the retainer paid to such Non-Employee Director shall be prorated for the portion of such calendar quarter actually served as a Non-Employee Director, or in such positions, as applicable.

(c) Exceptional Meeting Fees. Effective January 1, 2018, a fee of $1,500 shall be paid to a Non-Employee Director for each Board or committee meeting attended by such Non-Employee Director in excess of the number of regular Board or committee meetings scheduled by the Board for the applicable calendar year. Such exceptional meeting fees shall be paid by the Company in arrears not later than the third business day following the end of the calendar quarter in which any such exceptional meeting occurs (if not deferred by the Non-Employee Director in accordance with subsection (d) hereof).

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(d) Deferral of Retainers. Non-Employee Directors may elect to defer payment of all or a portion of the annual retainers described in Section 2(a) and the exceptional meeting fees described in Section 2(c) into specified investment funds and/or into vested restricted share units for shares of the Company's common stock, which deferral will be made pursuant to the terms of the Company's Amended and Restated Deferred Fee Plan for Directors or its successor plan (the "Deferred Fee Plan"). Unless otherwise determined by the Board, any restricted share units will be granted under the 2013 Arconic Stock Incentive Plan or its successor plan (the "Equity Plan"), on the date on which such retainer(s) would otherwise have been paid in cash. The extent to which a Non-Employee Director may defer annual retainer payments into vested restricted share units will therefore be subject to any limit on awards granted to a Non-Employee Director set forth in the Equity Plan. As of the date hereof, subject to amendment at the Company’s annual meeting of stockholders in 2018 ("2018 Annual Meeting") in accordance with Section 5 below, such limit on awards under the Equity Plan is $250,000 in any one-year period (the “Award Limit”).

3.Equity Compensation. Non-Employee Directors shall be granted the equity awards described below. The awards described below in paragraphs 3(a) and 3(b) shall be granted under and shall be subject to the terms and provisions of the Equity Plan and shall be granted subject to an award agreement in substantially the same form approved by the Board prior to or as of the grant date, setting forth the terms of the award (the "Award Terms"), consistent with the Equity Plan. For purposes of this Section 3, the number of shares subject to any restricted share unit award will be determined by dividing the grant date dollar value specified under subsection (a) or (b) hereof by the Fair Market Value (as defined in the Equity Plan) of a share of the Company's common stock on the date of grant.

(a) Annual Equity Award. Commencing as of the Company’s 2018 Annual Meeting, a person who is a Non-Employee Director immediately following each annual meeting of the Company's stockholders and who will continue to serve as a Non-Employee Director following such annual meeting shall be automatically granted on the second market trading day following the date of each such annual meeting a restricted share unit award with a grant date value equal to $150,000 (the "Annual Equity Award"). The Annual Equity Award shall vest on the earlier of the first anniversary date of the grant date or the date of the Company's next subsequent annual meeting of stockholders following the grant date.

(b) Pro-Rated Annual Equity Award. On the fifth market trading day following a person's initial appointment as a Non-Employee Director, and provided such person has not otherwise received an Annual Equity Award for the relevant year under Section 3(a), the Non-Employee Director shall be automatically granted a restricted share unit award with a grant date value equal to $120,000 if such person’s initial appointment as a Non-Employee Director occurs prior to the 2018 Annual Meeting or $150,000 if such person’s initial appointment as a Non-Employee Director occurs on or after the 2018 Annual Meeting, in each case multiplied by a fraction, the numerator of which is 365 less the number of days that have elapsed since the date of the Company's last annual meeting of stockholders and the Non-Employee Director's date of initial appointment, and the denominator of which is 365 (the "Pro-Rated Award"). The Pro-Rated Award shall vest on the date of the Company's next subsequent annual meeting of stockholders following the date of the Non-Employee Director's appointment to the Board.

(c) Special Vesting of Equity Awards. Notwithstanding Sections 3(a) or (b) above and as shall be further set forth in the Award Terms: (i) unvested equity awards shall vest in full upon the death of a Non-Employee Director or upon a Change in Control where a Replacement Award is not provided or the Non-Employee Director’s service is terminated (where Change in Control and Replacement Award are as defined in the Equity Plan); and (ii) unvested equity awards shall vest on a pro-rata basis in the event of a Non-Employee Director's termination of service for any other reason.

(d) Deferral of Equity Award. Payment of the Annual Equity Award or any Pro-Rated Award will be deferred until the Non-Employee Director's separation from service, in accordance with the terms of the Deferred Fee Plan, unless otherwise required by applicable laws.

4.Stock Ownership Guideline. Within a period of six years from the date of a person's initial appointment as a Non-Employee Director, each Non-Employee Director is required to attain ownership of at least $750,000 in the Company's common stock and must maintain such ownership until retirement from the Board.

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5.Director Compensation Limit. As shall be further set forth in the Equity Plan and presented to the Company’s stockholders for approval at the Company’s 2018 Annual Meeting in place of the Award Limit, the sum of the grant date value of all equity awards granted and all cash compensation paid by the Company to a Non-Employee Director as compensation for services as a Non-Employee Director shall not exceed $750,000 during any calendar year. For avoidance of doubt, compensation shall count towards this limit for the fiscal year in which it is granted or earned, and not later when distributed, in the event it is deferred.

6.Policy Subject to Amendment, Modification and Termination. This Policy may be amended, modified or terminated by the Board in the future at its sole discretion, provided that no such action that would materially and adversely impact the rights with respect to annual retainers payable in the fiscal quarter during which a Non-Employee Director is then performing services shall be effective without the consent of the affected Non-Employee Director.

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EX-10.R(1)

Exhibit 10(r)(1)

FIRST AMENDMENT TO THE

ARCONIC DEFERRED COMPENSATION PLAN

(previously known as the Alcoa Deferred Compensation Plan)

(as amended and restated August 1, 2016)

Pursuant to Section 10.1 of the Arconic Deferred Compensation Plan (“Plan”), which provides that the Plan may be amended by action of the Board or Benefits Management Committee, the Plan is amended effective January 1, 2018, as follows:

1.Article I (“Definitions”) of the Plan shall be amended by deleting definition of “Committee” therefrom.

2. Article I (“Definitions”) of the Plan shall be amended by inserting the following definitions of “Benefits Investments Committee” and “Benefits Management Committee” therein:

“Benefits Investments Committee” means the Benefits Investments Committee of Arconic Inc., which shall have authority over the investment and management of any and all corporate assets attributable or allocated to this Plan (to the extent that this Plan becomes funded and only to the extent that Participants do not exercise such control). Prior to January 1, 2018, such authority was vested in the Benefits Management Committee.

“Benefits Management Committee” means the Benefits Management Committee of Arconic Inc. (previously known as the Benefits Management Committee of Alcoa Inc.), which shall have powers over administration of this Plan as provided herein.

3. References in the Plan to the “Committee” shall be revised to be references to the “Benefits Management Committee” except for the reference in the Article I definition of “Investment Options” which shall be revised to be reference to the “Benefits Investments Committee”.

4.A new Section 5.2 shall be added to the Plan as follows:

5.2.    The Benefits Investments Committee shall have the power and authority to select the Investment Options. To the extent that this Plan becomes funded in the future, the Benefits Investments Committee shall have authority over the investment and management of any and all corporate assets attributable or allocated to this Plan, except to the extent that any such assets are allocated to an account in which a Participant exercises investment authority. In this regard, the Benefits Investments Committee shall have the authority to approve, to adopt, to amend, to merge and to terminate any trust established to secure any such assets.

5.In all other respects, the Plan is ratified and confirmed.

EX-10.UU

Exhibit 10(uu)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

STOCK OPTION AWARD AGREEMENT

Grant Date: January 19, 2018

The terms and conditions of this Global Stock Option Award Agreement, including Appendices A and B attached hereto, (the “Award Agreement”) are authorized by the Compensation and Benefits Committee of the Board of Directors. The Stock Option award is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”). Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Stock Option, the Participant must affirmatively accept the Stock Option and the terms of this Award Agreement within 6 months of the grant date, as set forth in paragraph 41 of the Award Agreement.

General Terms and Conditions

1. The Stock Option award is subject to the terms and conditions set forth in the Participant’s account at Merrill Lynch’s OnLine^® website www.benefits.ml.com, the provisions of the Plan and the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company.

2. The exercise price (or option price) of the Stock Option is 100% of the fair market value per Share on the date of grant, unless the Participant’s account at Merrill Lynch’s OnLine^® website www.benefits.ml.com, specifies a higher exercise price.

3. The expiration date of a Stock Option is ten years after the date of grant.

Vesting and Exercisability

4. The Stock Option vests as to one-third of the Award on the first anniversary of the grant date, as to one-third of the Award on the second anniversary of the grant date and as to one-third of the Award on the third anniversary of the grant date.

5. Except as provided in paragraph 7, once vested, a Stock Option may be exercised until its expiration date, as long as the Participant remains an active employee of the Company or a Subsidiary. As an administrative matter, the vested portion of this Stock Option may be exercised only until the close of the New York Stock Exchange on the expiration date or such earlier termination date set forth in paragraph 7 or, if such date is not a business day on the New York Stock Exchange, the last business day before such date. Any later attempt to exercise the Stock Option will not be honored. The Participant is solely responsible for any election to exercise the Stock Option, and the Company has no obligation to provide notice to the Participant of any matter, including, but not limited to, the date the Stock Option terminates. Neither the Company nor any Subsidiary has any liability in the event of the Participant’s failure to timely exercise any vested Stock Option prior to its expiration.

6. Except as provided in paragraph 7:

• as a condition to exercise of a Stock Option, a Participant must remain an active employee of the Company or a Subsidiary until the date the option vests, and if a Stock Option vests as to some but not all Shares covered by the Award, the Participant must be an active employee on the date the relevant portion of the Award vests; and

• if the Participant’s employment with the Company (including its Subsidiaries) terminates prior to the vesting date of the Stock Option (or relevant option portion), the Stock Option (or relevant option portion) is forfeited and is automatically canceled.

7. The following are exceptions to the vesting and exercisability rules:

• Death or Disability: a Stock Option held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests in accordance with the original vesting date. In the case of a Participant who dies while an Employee, any Stock Option that is vested must be exercised by a legal representative or beneficiary on the earlier of five years from the date of death or the original expiration date of the Stock Option. In the case of a Participant who is permanently and totally disabled while an Employee, any Stock

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Option that is vested must be exercised on the earlier of five years from the date of such disability or the original expiration date of the Stock Option.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Stock Option vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan.

• Retirement: a Stock Option is not forfeited if it is held by a Participant who retires at least 6 months after the grant date under an applicable Company or Subsidiary plan (or if there is no Company or Subsidiary plan, a government retirement plan) in which the Participant is eligible for an immediate payment of a retirement benefit. In that event, any unvested portion of the Stock Option vests in accordance with the original vesting schedule of the grant, and any Stock Option that is vested will be exercisable until the earlier of five years from the date of retirement or the original expiration date of the Stock Option. Immediate commencement of a deferred vested pension benefit under a Company or Subsidiary retirement plan is not considered a retirement for these purposes.

• Divestiture: if a Stock Option is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Chief Executive Officer of the Company:

◦ Any unvested portion of the Stock Option will continue to vest under the original vesting schedule and once vested, will be exercisable until the earlier of the original expiration date of the Stock Option or two years from the date the Participant’s employment with the Company or a Subsidiary has been terminated; and

◦ Any vested portion of the Stock Option will remain exercisable until the earlier of the original expiration date of the Stock Option or two years from the date the Participant’s employment with the Company or a Subsidiary has been terminated.

For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

• Termination of Employment: if a Stock Option is held by a Participant whose employment with the Company (including its Subsidiaries) is terminated for any reason other than those described above in this paragraph 7, any unvested Stock Options will be forfeited on the date of termination of employment and any vested Stock Options will remain exercisable for 90 days after the date employment is terminated.

Option Exercise and Payment of Exercise Price

8. A vested, exercisable option is exercised when a signed notification of exercise is received by Merrill Lynch’s OnLine^® website www.benefits.ml.com.

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9. Payment in full of the exercise price of a Stock Option is due on the exercise date. Unless otherwise determined by the Company (except that no such determination may be made with respect to a Section 16 Insider), payment of the option exercise price may be made:

• in cash (including a “broker-assisted cashless exercise” described in the next paragraph); or

• by the delivery or presentation of Shares that have an aggregate fair market value on the date of exercise, which, together with any cash payment, equals or exceeds the Stock Option exercise price.

10. A Participant may elect to pay the cash exercise price of the option through a “broker-assisted cashless exercise,” using Merrill Lynch’s OnLine^® website www.benefits.ml.com. On or prior to the exercise date, the Participant must deliver the Participant’s instruction directing and obligating the broker to (a) sell Shares (or a sufficient portion of the Shares) acquired upon exercise of the option and (b) remit to the Company a sufficient portion of the sale proceeds to pay the entire exercise price and any tax withholding resulting from the exercise. Such proceeds are due not later than the third trading day after the exercise date.

11. Shares owned by a Participant include (a) those registered in the Participant’s name (or registered jointly with another person), (b) those held in a brokerage account owned by the Participant individually or jointly with another person, and (c) those held in a trust, partnership, limited partnership or other entity for the benefit of the Participant individually (or for the benefit of the Participant jointly with another person). Notwithstanding the foregoing, Shares owned by a Participant do not include Shares held in any qualified plan, IRA or similar tax deferred arrangement or Shares that are otherwise subject to potential accounting limitations regarding their use in stock swap transactions. The Company may require verification or proof of ownership or length of ownership of any shares delivered in payment of the exercise price of an option.

Taxes

12. All taxes required to be withheld under applicable tax laws in connection with the Stock Option must be paid by the Participant immediately upon exercise (or at the time of any other relevant taxable event).

13. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, except that the Company shall not have discretion to withhold Shares from any Shares deliverable upon exercise if the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended (a “Section 16 Insider”). Withholding taxes in the United States include applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes.

14. The amount of taxes that may be paid by a Participant may be determined by applying the minimum rates or, to the extent permitted under applicable accounting principles, up to the maximum individual tax rate for the applicable tax jurisdiction required by applicable tax regulations.

15. The Participant acknowledges that neither the Company nor any Subsidiary has made any representation or given any advice to the Participant with respect to taxes.

Beneficiaries

16. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Stock Options that are unexercised at the time of the Participant’s death. All beneficiary designations will be on a beneficiary designation form approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s Benefits OnLine^®www.benefits.ml.com.

17. Beneficiary designations on an approved form will be effective at the time received by Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

18. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

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19. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Stock Option prior to the death of the Participant who designated such beneficiary.

20. Unless the Participant indicates on the form that a named beneficiary is to receive unexercised options only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled and required to join in the exercise of the option. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Stock Options.

21. Should a beneficiary die after the Participant but before the option is exercised, such beneficiary’s rights and interest in the option award will be transferable by last will and testament of the beneficiary or the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a stock option award, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “percapita.”

22. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Stock Options that are unexercised at the time of death of the Participant will be transferred to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution and may be exercised by the legal heirs as set forth in paragraph 7.

Transferable Options

23. Upon approval of, and subject to such requirements as may be imposed by, the Company, vested Stock Options may be transferred to one or more immediate family members, individually or jointly. A trust, each of whose beneficiaries is the Participant or an immediate family member, will be deemed to be a family member for purposes of these rules.

24. Any permitted transfer of Stock Options shall be effective on the date written notice thereof, on a form approved for this purpose, is received. Copies of the form are available from the Communications Center on Merrill Lynch’s Benefits OnLine^® website www.benefits.ml.com. As a condition to transfer, the Participant shall agree to remain responsible to pay the applicable taxes due in relation to the option. The Participant or the Participant’s estate will be required to provide sufficient evidence of ability to pay such taxes upon the Company’s request.

25. A transfer shall be irrevocable; no subsequent transfer by the transferee shall be effective. Notwithstanding the foregoing, a transferee shall be entitled to designate a beneficiary in accordance with the provisions of paragraphs 16 through 22 above. Except where a beneficiary has been designated, in the event of death of the transferee prior to option exercise, the transferee’s option will be transferable by last will and testament or the laws of descent and distribution.

26. Except as modified by the provisions of paragraphs 23 through 25, all terms applicable to option exercises by Participants are applicable to exercises by transferees. The Plan administrator may make and publish additional rules applicable to exercises by transferees not inconsistent with these provisions.

Adjustments

27. In the event of an Equity Restructuring, the Committee will equitably adjust the Stock Option as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Stock Option; and (ii) adjusting the terms and conditions of the Stock Option, including the exercise price. The adjustments provided under this paragraph 27 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

28. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that a Stock Option will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as

4

described in Section 15(h) of the Plan.

Further, as an additional condition of receiving the Stock Option, the Participant agrees that the Stock Option and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Stock Option for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

29. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares purchased upon exercise of the Stock Option, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

30. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Stock Option shall have been duly exercised to purchase such Shares in accordance with the provisions of the Award Agreement.

31. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

32. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

33. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

34. Appendices. Notwithstanding any provisions in the Award Agreement, for Participants residing and/or working outside the United States, the Stock Option shall be subject to the additional terms and conditions set forth in Appendix A to the Award Agreement and to any special terms and conditions for the Participant’s country set forth in Appendix B to the Award Agreement. Moreover, if the Participant relocates outside the United States or relocates between the countries included in Appendix B, the additional terms and conditions set forth in Appendix A and the special terms and conditions for such country set forth in Appendix B will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Appendices constitutes part of the Award Agreement.

35. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Stock Option and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

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36. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

37. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

38. Governing Law and Venue. As stated in the Plan, the Stock Option and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Stock Option will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

39. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

40. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

41. As permitted by Section 15(c) of the Plan, receipt of this Award of Stock Options is subject to the Participant’s acceptance of the Stock Option and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Stock Option award, the Participant must provide such Acceptance within 6 months of the grant date of the Stock Option. The date as of which the Participant’s Stock Option shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award of Stock Options will be cancelled in accordance with any administrative procedures adopted under the Plan.

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APPENDIX A TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Stock Option Award Agreement

For Non-U.S. Participants

This Appendix A contains additional (or, if so indicated, different) terms and conditions that govern the Stock Option if the Participant resides and/or works outside of the United States. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and the Global Stock Option Award Agreement (the “Award Agreement”).

A. Termination. This provision supplements paragraph 7 of the Award Agreement.

The Company will determine when the Participant is no longer providing services for purposes of the Stock Option (including whether the Participant may still be considered to be providing services while on a leave of absence).

B. Responsibility for Taxes. This provision replaces paragraphs 12 through 15 of the Award Agreement (except if the Participant is a Section 16 Insider).

The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Subsidiary that employs the Participant (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the Stock Option, including, but not limited to, the grant, vesting or exercise of the Stock Option, the subsequent sale of Shares acquired upon exercise of the Stock Option and the receipt of any dividends; and (b) do not commit to and are under no obligation to structure the terms of the Stock Option or any aspect of the Stock Option to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. The Participant shall not make any claim against the Company, the Employer or any other Subsidiary, or their respective board, officers or employees related to Tax-Related Items arising from the Stock Option. Furthermore, if the Participant has become subject to tax in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Participant will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: (i) requiring a cash payment from the Participant; (ii) withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer, (iii) withholding from the proceeds of the sale of Shares acquired pursuant to the Stock Option, either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization without further consent); and/or (iv) withholding from the Shares to be issued upon exercise of the Stock Option.

Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant may receive a refund of any over-withheld amount in cash (with no entitlement to the Share equivalent) or, if not refunded, the Participant may seek a refund from the local tax authorities. If the obligation for Tax-Related Items is satisfied by withholding in Shares, the Participant is deemed, for tax purposes, to have been issued the full number of Shares upon exercise of the Stock Option, notwithstanding that a number of the Shares is held back solely for the purpose of paying the Tax-Related Items.

Finally, the Participant shall pay to the Company and/or the Employer any amount of Tax-Related Items that the Company and/or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with his or her obligations in connection with the Tax-Related Items.

C.    Nature of Award. In accepting the Stock Option, the Participant acknowledges, understands and agrees that:

     a.    the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended, or terminated by the Company at any time, to the extent permitted by the Plan;

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     b.    this Award of Stock Options is exceptional, voluntary and occasional and does not create any contractual or other right to receive future Stock Options, or benefits in lieu of Stock Options, even if Stock Options have been granted in the past;

     c.    all decisions with respect to future Stock Options or other Awards, if any, will be at the sole discretion of the Company;

     d.    this Award of Stock Options and the Participant’s participation in the Plan shall not create a right to, or be interpreted as forming an employment or service contract with the Company and shall not interfere with the ability of the Employer to terminate the Participant’s employment contract (if any) at any time;

     e.    the Participant’s participation in the Plan is voluntary;

f.    this Award of Stock Options and the Shares acquired under the Plan, and the income from and value of same, are not intended to replace any pension rights or compensation;

     g.    this Award of Stock Options and the Shares acquired under the Plan, and the income from and value of same, are not part of normal or expected compensation or salary for any purposes, including, without limitation, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

h.    if the underlying Shares do not increase in value, the Stock Option will have no value;

     i.    if the Participant exercise the Stock Option and acquires Shares, the value of such Shares may increase or decrease in value, even below the exercise price;

     j.    the future value of the Shares subject to the Stock Option is unknown, indeterminable and cannot be predicted with certainty;

     k.    unless otherwise agreed with the Company, Stock Options and the Shares acquired under the Plan, and the income from and value of same, are not granted as consideration for, or in connection with, the service the Participant may provide as a director of any Subsidiary;

     l.    no claim or entitlement to compensation or damages shall arise from forfeiture of any portion of this Award of Stock Options resulting from termination of the Participant’s employment and/or service relationship (for any reason whatsoever and regardless of whether later found to be invalid or in breach of applicable laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any);

     m.    unless otherwise provided in the Plan or by the Company in its discretion, this Award of Stock Options and the benefits under the Plan evidenced by the Award Agreement do not create any entitlement to have this Award of Stock Options or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares; and

     n.    neither the Company, the Employer nor any other Subsidiary shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Stock Option or of any amounts due to the Participant pursuant to the Stock Option or the subsequent sale of any Shares acquired under the Plan.

D. Data Privacy. The Participant hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of the Participant’s personal data as described in the Award Agreement and any other grant materials by and among, as applicable, the Company, the Employer and any other Subsidiary for the exclusive purpose of implementing, administering and managing the Participant’s participation in the Plan.

The Participant understands that the Company and the Employer may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address, email address and telephone number, date of birth, social insurance number, passport or other identification number, salary, nationality, job title, any shares of stock or directorships held in the Company, details of all Stock Options or any other entitlement to shares of stock awarded, canceled, exercised, vested, unvested or outstanding in the Participant’s favor (“Data”), for the exclusive purpose of implementing, administering and managing the Plan.

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The Participant understands that Data may be transferred to Merrill Lynch, which is assisting the Company with the implementation, administration and management of the Plan. The Participant understands that the recipients of Data may be located in the United States or elsewhere, and that the recipients’ country (e.g., the United States) may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of Data by contacting the Participant’s local human resources representative. The Participant authorizes the Company, Merrill Lynch and any other possible recipients which may assist the Company (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer Data, in electronic or other form, for the sole purpose of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment and career with the Employer will not be affected; the only consequence of refusing or withdrawing the Participant’s consent is that the Company would not be able to grant this Award of Stock Options or other Awards to the Participant or administer or maintain such Awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of the Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.

Finally, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form (or any other agreements or consents) that the Company and/or the Employer may deem necessary to obtain from the Participant for the purpose of administering the Participant’s participation in the Plan in compliance with the data privacy laws in the Participant’s country, either now or in the future. The Participant understands and agrees that he or she will not be able to participate in the Plan if the Participant fails to provide such consent or agreement as requested by the Company and/or the Employer.

E. Retirement. Notwithstanding paragraph 7 of the Award Agreement, if the Company receives an opinion of counsel that there has been a legal judgment and/or legal development in the Participant’s jurisdiction that would likely result in the favorable treatment applicable to the Stock Option pursuant to paragraph 7 being deemed unlawful and/or discriminatory, then the Company will not apply the favorable treatment at the time of the Participant’s retirement, and the Stock Option will be treated as set forth in the remaining provisions of paragraph 7 of the Award Agreement.

F. Language. The Participant acknowledges that he or she is sufficiently proficient in English to understand the terms and conditions of the Award Agreement. Further, if the Participant has received the Award Agreement, or any other document related to this Award of Stock Option and/or the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control.

G. Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country, or the broker’s country, or the country in which the Shares are listed, the Participant may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, which may affect his or her ability to accept, acquire or sell, or attempt to sell or otherwise dispose of Shares or rights to Shares (e.g., Stock Options), or rights linked to the value of Shares, during such times as he or she is considered to have “inside information regarding the Company (as defined by the applicable laws or regulations in applicable jurisdictions, including the United States and the Participant’s country). Local insider trading laws and regulations may prohibit he cancellation or amendment of orders the Participant placed before possessing inside information. Furthermore, the Participant may be prohibited from (i) disclosing the inside information to any third party, including fellow employees (other than on a “need to know” basis) and (ii) “tipping” third parties or causing them to buy or sell securities. Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges that it is his or her responsibility to comply with any applicable restrictions, and the Participant should consult his or her personal advisor on this matter.

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H. Foreign Asset/Account Reporting Requirements, Exchange Controls and Tax Requirements. The Participant acknowledges that his or her country may have certain foreign asset and/or account reporting requirements and exchange controls which may affect his or her ability to acquire or hold Shares under the Plan or cash received from participating in the Plan (including from any dividends received or sale proceeds arising from the sale of Shares) in a brokerage or bank account outside his or her country. The Participant understands that he or she may be required to report such accounts, assets or transactions to the tax or other authorities in his or her country. The Participant also may be required to repatriate sale proceeds or other funds received as a result of the Participant’s participation in the Plan to his or her country through a designated bank or broker and/or within a certain time after receipt. In addition, the Participant may be subject to tax payment and/or reporting obligations in connection with any income realized under the Plan and/or from the sale of Shares. The Participant acknowledges that it is his or her responsibility to be compliant with all such requirements, and that the Participant should consult his or her personal legal and tax advisors, as applicable, to ensure the Participant’s compliance.

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APPENDIX B TO THE ARCONIC INC.

2013 Stock Incentive Plan

Global Stock Option Award Agreement

For Non-U.S. Participants

Capitalized terms used but not defined in this Appendix B have the meanings set forth in the Plan and the Global Stock Option Award Agreement (the “Award Agreement”).

Terms and Conditions

This Appendix B includes special terms and conditions that govern the Stock Option if the Participant resides and/or works in one of the countries listed below.

If the Participant is a citizen or resident of a country other than the country in which the Participant is currently residing and/or working, or if the Participant transfers to another country after the grant of the Stock Option or is considered a resident of another country for local law purposes, the Committee shall, in its discretion, determine to what extent the special terms and conditions contained herein shall be applicable to the Participant.

Notifications

This Appendix B also includes information regarding exchange controls, tax and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the securities, exchange control, tax and other laws in effect in the respective countries as of December 2017. Such laws are often complex and change frequently. As a result, the Company strongly recommends that the Participant not rely on the information in this Appendix B as the only source of information relating to the consequences of participation in the Plan because the information may be out of date at the time the Participant exercises the Stock Option or sells Shares acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation and the Company is not in a position to assure the Participant of any particular result. Accordingly, the Participant should seek appropriate professional advice as to how the relevant laws in the Participant’s country may apply to his or her situation.

Finally, if the Participant is a citizen or resident of a country other than the country in which the Participant currently works and/or resides, or if the Participant transfers to another country after the grant of the Stock Option, or is considered a resident of another country for local law purposes, the information contained herein may not be applicable to the Participant in the same manner.

AUSTRALIA

Terms and Conditions

Australia Offer Document.

The grant of Stock Options is intended to comply with the provisions of the Corporations Act, 2011, Australian Securities & Investments Commission (“ASIC”) Regulatory Guide 49 and ASIC Class Order 14/1000. Additional details are set forth in the Offer Document to Australian resident employees, which is being provided to the Participant with the Award Agreement.

Notifications

Exchange Control Information.

Exchange control reporting is required for cash transactions exceeding A$10,000 and for international fund transfers. If an Australian bank is assisting with the transaction, the bank will file the report on the Participant’s behalf.

Tax Information.

The Plan is a plan to which Subdivision 83A-C of the Income Tax Assessment Act 1997 (Cth) applies (subject to conditions in the Act).

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AUSTRIA

Notifications

Exchange Control Information.

If the Participant holds Shares obtained through the Plan outside of Austria, the Participant must submit a report to the Austrian National Bank. An exemption applies if the value of the Shares as of any given quarter does not meet or exceed €30,000,000 or as of December 31 does not meet or exceed €5,000,000. If the former threshold is exceeded, quarterly obligations are imposed, whereas if the later threshold is exceeded, annual reports must be given. If quarterly reporting is required, the reports must be filed by the fifteen day of the month following the last day of the respective quarter. The annual reporting date is December 31 and the deadline for filing the annual report is January 31 of the following year.

When Shares are sold or cash dividend or dividend equivalent payments are received, there may be exchange control obligations if the cash received is held outside of Austria. If the transaction volume of all the Participant’s accounts abroad meets or exceeds €10,000,000, the movements and balances of all accounts must be reported monthly, as of the last day of the month, on or before the fifteen of the following month.

BELGIUM

Terms and Conditions

Accepting the Stock Option.

The tax consequences to the Participant vary depending upon when the Participant accepts the Stock Option. Based on the current interpretation of Belgian tax law by the Belgian Minister of Finance, if the Participant accepts the Stock Option within 60 days from the offer date, the Participant will be subject to tax at the time of offer; or if the Participant accepts the Stock Option after 60 days from the offer date, the Participant will be subject to tax at the time of exercise. The Company is not in a position to provide the Participant with tax advice, so Participants should consult with his or her personal tax advisor to determine when the Participant should accept the Stock Option. The choice is at the Participant’s risk and neither the Company nor any of its Subsidiaries may be held liable for damages, if any, that the Participant may incur should the Minister of Finance’s interpretation not be upheld (with respect to taxation at exercise for Stock Option awards accepted after 60 days following the offer date).

The Participant is strongly encouraged to consult his or her tax advisor in deciding which choice to make with respect to the Stock Option.

Notifications

Foreign Asset/Account Reporting Information.

If the Participant is a Belgian resident, the Participant is required to report any bank accounts opened and maintained outside of Belgium (e.g., brokerage accounts opened in connection with the Plan) on his or her annual tax return. In a separate report, the Participant is required to provide the National Bank of Belgium with certain details regarding such foreign accounts (including the account number, bank name and country in which any such account was opened). This report, as well as additional information on how to complete it, can be found on the website of the National Bank of Belgium, www.nbb.be, under Kredietcentrales / Centrales des crédits caption. The Participant should consult with his or her personal tax advisor to determine his or her personal reporting obligations.

Stock Exchange Tax.

From January 1, 2017, a stock exchange tax applies to transactions executed through a non-Belgian financial intermediary. The stock exchange tax will likely apply when the Shares are sold. The Participant should consult with his or her personal tax advisor to determine his or her obligations with respect to the stock exchange tax.

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BRAZIL

Terms and Conditions

Compliance with Law.

By accepting the Stock Option, the Participant acknowledges that he or she agrees to comply with applicable Brazilian laws and to pay any and all applicable taxes associated with the exercise of the Stock Options, the sale of the Shares acquired under the Plan and the receipt of any dividends.

Acknowledgment of Nature of the Grant.

This provision supplements paragraph C “Nature of Award” of Appendix A:

By accepting and/or exercising the Stock Option, the Participant agrees that he or she is making an investment decision, the Stock Option may be exercised only if the vesting conditions are met and any necessary services are rendered by the Participant over the vesting period, and the value of the underlying Shares is not fixed and may increase or decrease in value without compensation to the Participant.

Notifications

Exchange Control Information.

If the Participant is a resident of or domiciled in Brazil, he or she will be required to submit an annual declaration of assets and rights held outside of Brazil to the Central Bank of Brazil if the aggregate value of the assets and rights is equal to or greater than US$100,000. If such amount exceeds US$100,000,000, the declaration must be submitted quarterly. Assets and rights that must be reported include Shares acquired under the Plan.

Tax on Financial Transactions (IOF).

The remittance of funds from Brazil, the repatriation of funds (e.g., sale proceeds) into Brazil and the conversion of USD into BRL associated with such fund transfers may be subject to the Tax on Financial Transactions. It is the Participant’s responsibility to comply with any applicable Tax on Financial Transactions arising from the Participant’s participation in the Plan. The Participant should consult with his or her personal tax advisor for additional details.

CANADA

Terms and Conditions

Payment of Exercise Price and Tax-Related Items.

Notwithstanding any provision in the Plan or the Award Agreement (including Appendix A), the Participant is prohibited from delivering Shares that have been owned by the Participant to pay the exercise price or Tax-Related Items in connection with the Stock Option.

Termination of Service. The following provision replaces paragraph A “Termination” of Appendix A.

For purposes of the Stock Option, the Participant’s employment relationship will be considered terminated (regardless of the reason for such termination and whether or not later found to be invalid or in breach of Canadian laws or the terms of the Participant’s employment agreement, if any)effective as of the date that is the earlier of (i) the date of the Participant’s termination, (ii) the date the Participant receives notice of termination, or (iii) the date the Participant is no longer actively providing service and will not be extended by any notice period (e.g., active service would not include any contractual notice period or any period of “garden leave” or similar period mandated under Canadian laws or the terms of the Participant’s employment agreement, if any). Unless otherwise expressly provided in the Award Agreement or determined by the Company, the Participant’s right to vest in the Stock Option, if any, will terminate effective as of such date and any period to exercise the Stock Option after termination will start to run on such date. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing service for purposes of the Stock Option (including whether the Participant may still be considered to be providing services while on a leave of absence).

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The Following Provisions Apply for Participants Resident in Quebec:

Consent to Receive Information in English.

The Participant acknowledges that it is the express wish of the parties that the Award Agreement, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be written in English.

Les parties reconnaissent avoir exigé la rédaction en anglais de Conditions d’attribution, ainsi que de tous documents, avis et procédures judiciaires, exécutés, donnés ou intentés en vertu de, ou liés directement ou indirectement à, la présente convention.

Authorization to Release and Transfer Necessary Personal Information. The following provision supplements paragraph D “Data Privacy” of Appendix A.

The Participant hereby authorizes the Company and the Company’s representatives to discuss with and obtain all relevant information from all personnel, professional or not, involved in the administration and operation of the Plan. The Participant further authorizes the Company, any Subsidiary and the administrator of the Plan to disclose and discuss the Plan with their advisors. The Participant further authorizes the Company and any Subsidiary to record such information and to keep such information in the Participant’s employee file.

Notifications

Securities Law Information.

The Participant acknowledges that he or she is permitted to sell the Shares acquired under the Plan through the designated broker appointed by the Company, provided the sale of the Shares takes place outside of Canada through facilities of a stock exchange on which the Shares are listed (i.e., the NYSE).

Foreign Asset/Account Reporting Information.

Canadian residents are required to report to the tax authorities certain foreign property (including Stock Options) on form T1135 (Foreign Income Verification Statement) if the total cost of the foreign property exceeds C$100,000 at any time in the year. The form must be filed by April 30 of the following year. Stock Options must be reported-generally at a nil cost-if the C$100,000 cost threshold is exceeded because of other foreign property the Participant holds. If Shares are acquired, their cost generally is the adjusted cost base (“ACB”) of the Shares. The ACB would normally equal the fair market value of the Shares at exercise, but if the Participant owns other Shares, this ACB may have to be averaged with the ACB of the other Shares. The Participant should consult with his or her personal legal advisor to ensure compliance with applicable reporting obligations.

CHINA

Terms and Conditions

The following terms and conditions will apply to Participants who are subject to exchange control restrictions and regulations in the People’s Republic of China (“the PRC”), including the requirements imposed by the State Administration of Foreign Exchange (“SAFE”), as determined by the Company in its sole discretion:

Cashless Exercise Restriction.

Notwithstanding anything to the contrary in the Award Agreement or the Plan, to facilitate compliance with exchange control laws in the PRC, the Participant will be required to exercise the Stock Option using a cashless sell-all exercise method whereby all Shares subject to the exercised Stock Option will be sold immediately upon exercise and the proceeds of sale, less the exercise price, any Tax-Related Items and broker’s fees or commissions, will be remitted to the Participant in accordance with any applicable exchange control laws and regulations. The Participant will not be permitted to hold Shares after exercise. The Company reserves the right to provide additional methods of exercise to the Participant depending on the development of local law.

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Termination of Employment.

Due to exchange control laws in the PRC, notwithstanding any provision in the Plan or the Award Agreement, the Participant may be required to exercise any Stock Option within a certain period of time (determined by the Company) after termination. If the Stock Option is not exercised by the Participant by the end of this period, the Stock Option shall be forfeited and cancelled.

Furthermore, the Participant agrees that the Company reserves the right to require the sale of any Shares acquired at exercise of the Stock Option upon the termination of the Participant’s employment for any reason. The Participant hereby authorizes the sale of all Shares issued to the Participant as soon as administratively practicable after the applicable termination of employment and pursuant to this authorization. The Participant further agrees that the Company is authorized to instruct its designated broker to assist with the mandatory sale of such Shares and the Participant expressly authorizes the Company’s designated broker to complete the sale of such Shares. The Participant also agrees to sign any agreements, forms and/or consents that may be reasonably requested by the Company (or the designated broker) to effectuate the sale of the Shares (including, without limitation, as to the transfers of proceeds and other exchange control matters noted below) and shall otherwise cooperate with the Company with respect to such matters, provided that the Participant shall not be permitted to exercise any influence over and, when or whether the sales occur. The Participant acknowledges that the Company’s designated broker is under no obligation to arrange for the sale of the Shares at any particular price. Due to currency exchange conversion rate fluctuation between the applicable exercise date of the Stock Option and (if later) the date on which the Shares are sold, the amount of proceeds ultimately distributed to the Participant may be more or less than the market value of the Shares on the applicable exercise date (which is the relevant amount for purposes of calculating amounts necessary to satisfy applicable Tax-Related Items). The Participant understands and agrees that the Company is not responsible for any amount of loss the Participant may incur and the Company assumes no liability for any fluctuations in the Share price and/or any applicable exchange rate.

Upon the sale of the Shares, the Company agrees to pay the cash proceeds from the sale (less any Tax-Related Items, brokerage fees and commissions) to the Participant in accordance with the applicable exchange control laws and regulations, including but not limited to the restrictions set forth in this Appendix B for China below under “Exchange Control Restrictions.”

Exchange Control Restrictions.

The Participant understands and agrees that, pursuant to local exchange control requirements, the Participant will be required to immediately repatriate any cash payments or proceeds obtained with respect to participation in the Plan to the PRC. The Participant further understands that such repatriation of any cash payments or proceeds may need to be effectuated through a special exchange control account established by the Company or any Subsidiary, and the Participant hereby consents and agrees that any payment or proceeds may be transferred to such special account prior to being delivered to the Participant.

Any payment or proceeds may be paid to the Participant in U.S. dollars or local currency at the Company’s discretion. If the payments or proceeds are paid to the Participant in U.S. dollars, the Participant will be required to set up a U.S. dollar bank account in the PRC (if the Participant does not already have one) so that the payments or proceeds may be deposited into this account. If the payments or proceeds are paid to the Participant in local currency, the Company is under no obligation to secure any particular currency exchange rate and the Company may face delays in converting the payments or proceeds to local currency due to exchange control restrictions. The Participant agrees to bear any currency exchange rate fluctuation risk between the time the cash proceeds are received and the time the cash proceeds are distributed to the Participant through the special account described above. The Participant further agrees to comply with any other requirements that may be imposed by the Company in the future to facilitate compliance with exchange control requirements in the PRC.

Exchange Control Information.

PRC residents may be required to report to SAFE all details of their foreign financial assets and liabilities, as well as details of any economic transactions conducted with non-PRC residents.

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FRANCE

Terms and Conditions

Language Consent.

By accepting the Stock Option and the Award Agreement, which provide for the terms and conditions of the Stock Option, the Participant confirms having read and understood the documents relating to this Award (the Plan and the Award Agreement, including the Appendices) which were provided to the Participant in English. The Participant accepts the terms of those documents accordingly.

En acceptant l’attribution d’e Stock Option et ce Contrat d’Attribution qui contient les termes et conditions de Stock Option, le Participant confirme avoir lu et compris les documents relatifs à cette attribution (le Plan et le Contrat d’Attribution, ainsi que les Annexes) qui ont été transmis au Participant en langue anglaise. Le Participant accepte ainsi les conditions et termes de ces documents.

Notifications

Tax Information.

The Stock Options are not intended to be French tax-qualified awards.

Foreign Asset/Account Reporting Information.

French residents are required to report all foreign accounts (whether open, current or closed) to the French tax authorities when filing their annual tax returns. The Participant should consult his or her personal advisor to ensure compliance with applicable reporting obligations.

GERMANY

Notifications

Exchange Control Information.

If the Participant receives cross-border payments in excess of €12,500 in connection with the sale of securities (including Shares acquired under the Plan) or the receipt of any dividends or dividend equivalent payments, such payment must be reported monthly to the German Federal Bank (Bundesbank).  The Participant is responsible for the reporting obligation and should file the report electronically by the fifth day of the month following the month in which the payment is made. A copy of the report (“Allgemeines Meldeportal Statistik”) can be accessed via Bundesbank’s website (www.bundesbank.de) and is available in both German and English.

HUNGARY

There are no country-specific provisions.

INDIA

Exchange Control Information.

Indian residents are required to repatriate to India all proceeds received from the sale of Shares within 90 days of receipt and any dividends or dividend equivalent payments within 180 days of receipt, or within such other period of time as may be required under applicable regulations. The Participant must maintain the foreign inward remittance certificate received from the bank where the foreign currency is deposited in the event that the Reserve Bank of India or the Company requests proof of repatriation. It is the Participant’s responsibility to comply with applicable exchange control laws in India.

B-6

Foreign Asset/Account Reporting Information.

The Participant is required to declare any foreign bank accounts and any foreign financial assets (including Shares held outside India) in the Participant’s annual tax return. The Participant is responsible for complying with this reporting obligation and should confer with his or her personal tax advisor in this regard.

JAPAN

Notifications

Exchange Control Information.

Japanese residents purchasing Shares valued at more than ¥100,000,000 in a single transaction must file a Securities Acquisition Report with the Ministry of Finance through the Bank of Japan within 20 days of the acquisition of the Shares.

In addition, Japanese resident Participants paying more than ¥30,000,000 in a single transaction for the purchase of Shares when the resident Participant exercises the Stock Option must file a Payment Report with the Ministry of Finance through the Bank of Japan within 20 days of the date that the payment is made. The precise reporting requirements vary depending on whether or not the relevant payment is made through a bank in Japan.

Please note that a Payment Report is required independently from a Securities Acquisition Report; therefore, the Japanese resident Participant must file both a Payment Report and a Securities Acquisition Report if the total amount that the resident Participant pays in a single transaction for exercising the Stock Option and purchasing Shares exceeds ¥100,000,000.

Foreign Asset/Account Reporting Information.

The Participant will be required to report details of any assets held outside of Japan as of December 31 (including any Shares acquired under the Plan) to the extent such assets have a total net fair market value exceeding ¥50,000,000. Such report will be due by March 15 of the following year. The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies to the Participant and whether the Participant will be required to report details of any outstanding Stock Options, Shares or cash held by the Participant in the report.

KOREA

Notifications

Exchange Control Information.

Exchange control laws require Korean residents who realized US$500,000 or more from the sale of Shares or the receipt of dividends in a single transaction before July 18, 2017 to repatriate the proceeds back to Korea within three years of the sale/receipt.

Foreign Asset/Account Reporting Information.

If the Participant is a Korean resident, the Participant must declare all of his or her foreign financial accounts (including any brokerage account) to the Korean tax authority and file a report with respect to such accounts if the value of such accounts exceeds KRW 1 billion (or an equivalent amount in foreign currency).The Participant should consult with his or her personal tax advisor as to whether the reporting obligation applies.

MEXICO

Terms and Conditions

Policy Statement.

The Stock Option is a unilateral and discretionary award and, therefore, the Company reserves the absolute right to amend it and discontinue it at any time without any liability.

B-7

The Company, with offices at 390 Park Avenue, New York City, New York, 10022 U.S.A., is solely responsible for the administration of the Plan, and participation in the Plan and the Stock Option does not, in any way, establish an employment relationship between the Participant and the Company since the Participant is participating in the Plan on a wholly commercial basis and the sole employer is a Mexican Subsidiary, nor does it establish any rights between the Participant and the Employer.

Plan Document Acknowledgment.

By accepting the Stock Option, the Participant acknowledges that he or she has received copies of the Plan, has reviewed the Plan and the Award Agreement in their entirety, and fully understands and accepts all provisions of the Plan and the Award Agreement, including the Appendices.

In addition, the Participant expressly approves that: (i) participation in the Plan does not constitute an acquired right; (ii) the Plan and participation in the Plan is offered by the Company on a wholly discretionary basis; (iii) participation in the Plan is voluntary; and (iv) neither the Company nor any Subsidiary is responsible for any decrease in the value of the Shares acquired upon exercise of the Stock Option.

Finally, the Participant hereby declares that he or she does not reserve any action or right to bring any claim against the Company for any compensation or damages as a result of his or her participation in the Plan and therefore grant a full and broad release to the Employer, the Company and its other Subsidiaries with respect to any claim that may arise under the Plan.

Spanish Translation

Declaración de Política.

El otorgamiento de la Opción es unilateral y discrecional y, por lo tanto, la Compañía se reserva el derecho absoluto de modificar y discontinuar el mismo en cualquier momento, sin responsabilidad alguna.

La Compañía, con oficinas registradas ubicadas en 390 Park Avenue, New York, New York, 10022, EE.UU., es únicamente responsable por la administración del Plan, y el otorgamiento de la Opción no establece de forma alguna una relación de trabajo entre el Participante y la Compañía, ya que el Participante está participando en el Plan es sobre una base totalmente comercial, y el único patrón es una Afiliado Mexicana y tampoco establece ningún derecho entre usted y el Patrón.

Reconocimiento del Documento del Plan.

Al aceptar el otorgamiento de la Opción, el Participante reconoce que ha recibido copias del Plan, ha revisado el Plan y los Términos del Otorgamiento en su totalidad, y que entiende y acepta completamente todas las disposiciones contenidas en el Plan y en los Términos del Otorgamiento, incluyendo los Apéndices.

Adicionalmente, el Participante aprueba expresamente que: (i) la participación en el Plan no constituye un derecho adquirido; (ii) el Plan y la participación en el Plan se ofrecen por la Compañía de forma totalmente discrecional; (iii) la participación en el Plan es voluntaria; y (iv) la Compañía, cualquier Filial y el Patrón no son responsables por ninguna disminución en el valor de las Acciones que se adquieran al ejercer la Opción.

Finalmente, el Participante declara que no se reserva ninguna acción o derecho alguno para interponer una reclamación o demanda en contra de la Compañía por compensación, daño o perjuicio alguno como resultado de su participación en el Plan y, por lo tanto, otorga el más amplio y total finiquito al Patrón, a Compañía y sus Filiales en relación con cualquier reclamación o demanda que pudiera surgir de conformidad con el Plan.

NETHERLANDS

There are no country-specific provisions.

B-8

RUSSIA

Terms and Conditions

U.S. Transaction.

The Participant understands that the grant of the Stock Option is a right to receive Shares if certain conditions are met and that the offer is made by the Company in the United States. Upon exercise of the Stock Option, any Shares to be issued to the Participant shall be delivered to the Participant through a brokerage account in the United States. The Participant is not permitted to sell Shares directly to other Russian legal entities or residents.

Notifications

Exchange Control Information.

Under current exchange control regulations, within a reasonably short time after the sale of Shares acquired upon exercise or the receipt of dividend equivalent payments, the Participant is required to repatriate such funds received in connection with the Plan to the Participant’s bank account in Russia prior to using those proceeds for any purpose including reinvestments. Such proceeds must be initially credited to the Participant through a foreign currency account at an authorized bank in Russia. After the proceeds are initially received in Russia, they may be further remitted to foreign banks in accordance with Russian exchange control laws. The Participant is strongly encouraged to contact the Participant’s personal advisor to confirm the applicable Russian exchange control rules because significant penalties may apply in the case of non-compliance and because exchange control requirements may change.

Securities Law Information.

The grant of the Stock Option and the distribution of the Plan and all other materials the Participant may receive regarding participation in the Plan do not constitute an offering or the advertising of securities in Russia. The issuance of Shares pursuant to the Plan has not and will not be registered in Russia and, therefore, the Shares may not be used for an offering or public circulation in Russia. In no event will Shares be delivered to the Participant in Russia; all Shares acquired under the Plan will be maintained on the Participant’s behalf in the United States.

Data Privacy Acknowledgement.

The Participant hereby acknowledges that he or she has read and understands the terms regarding collection, processing and transfer of Data contained in Appendix A to the Award Agreement and by participating in the Plan, the Participant agrees to such terms. In this regard, upon request of the Company or the Employer, the Participant agrees to provide an executed data privacy consent form to the Company or the Employer (or any other agreements or consents that may be required by the Company or the Employer) that the Company and/or the Employer may deem necessary to obtain under the data privacy laws of Russia, either now or in the future.

Labor Law Information.

If the Participant continues to hold Shares after involuntary termination, the Participant may not be eligible to receive unemployment benefits in Russia.

Anti-Corruption Legislation Information.

Individuals holding public office in Russia, as well as their spouses and dependent children, may be prohibited from opening or maintaining a foreign brokerage or bank account and holding any securities, whether acquired directly or indirectly, in a foreign company (including Shares acquired under the Plan). The Participant is strongly advised to consult with his or her personal legal advisor to determine whether the restriction applies to the Participant.

SPAIN

No Entitlement for Claims or Compensation.

The following provisions supplement paragraph A “Termination” of Appendix A:

B-9

By accepting the Stock Option, the Participant consents to participation in the Plan and acknowledges that Participant has received a copy of the Plan.

The Participant understands and agrees that, as a condition of the grant of the Stock Option, if the Participant’s employment terminates, unless otherwise provided in the Award Agreement or by the Company, any unvested Stock Options shall be forfeited without entitlement to the underlying Shares or to any amount as indemnification in the event of a termination, including, but not limited to: resignation, disciplinary dismissal adjudged to be with cause, disciplinary dismissal adjudged or recognized to be without cause, individual or collective layoff on objective grounds, whether adjudged to be with cause or adjudged or recognized to be without cause, material modification of the terms of employment under Article 41 of the Workers’ Statute, relocation under Article 40 of the Workers’ Statute, Article 50 of the Workers’ Statute, unilateral withdrawal by the Employer, and under Article 10.3 of Royal Decree 1382/1985.

The Participant understands that the Company has unilaterally, gratuitously and in its sole discretion decided to grant Stock Options under the Plan to individuals who may be Employees of the Company or a Subsidiary. The decision is limited and entered into based upon the express assumption and condition that any grant will not economically or otherwise bind the Company or its Subsidiaries, including the Employer, on an ongoing basis, other than to the extent set forth in the Award Agreement. Consequently, the Participant understands that the Stock Option is granted on the assumption and condition that the Stock Option and any Shares issued upon exercise are not part of any employment or service agreement (either with the Company or any Subsidiary, including the Employer) and shall not be considered a mandatory benefit, salary for any purposes (including severance compensation) or any other right whatsoever. Furthermore, the Participant understands and freely accepts that there is no guarantee that any benefit whatsoever shall arise from the grant of the Stock Option, which is gratuitous and discretionary, since the future value of the Stock Option and the underlying Shares is unknown and unpredictable. The Participant also understands that the grant of the Stock Option would not be made but for the assumptions and conditions set forth hereinabove; thus, the Participant understands, acknowledges and freely accepts that, should any or all of the assumptions be mistaken or any of the conditions not be met for any reason, the Stock Option and any right to the underlying Shares shall be null and void.

Notifications

Securities Law Information.

No “offer of securities to the public”, as defined under Spanish law, has taken place or will take place in the Spanish territory with respect to the Stock Option. No public offering prospectus has been nor will be registered with the Comisión Nacional del Mercado de Valores (Spanish Securities Exchange Commission) (“CNMV”). Neither the Plan nor the Award Agreement constitute a public offering prospectus and they have not been, nor will they be, registered with the CNMV.

Exchange Control Information.

It is the Participant’s responsibility to comply with exchange control regulations in Spain. The Participant must declare the acquisition of Shares for statistical purposes to the Spanish Direccion General de Comercio e Inversiones (the “DGCI”) of the Ministry of Economy and Competitiveness. In addition, the Participant must also file a Form D-6 with the Directorate of Foreign Transaction each January in which the Shares are owned. The sale of Shares also must be declared on Form D-6 filed with the DGCI in January, unless the sale proceeds exceed the applicable threshold (currently €1,502,530), in which case, the filing is due within one month after the sale.

Foreign Asset/Account Reporting Information.

The Participant is required to declare electronically to the Bank of Spain any securities accounts (including brokerage accounts held abroad), as well as the Shares held in such accounts if the value of the transactions during the prior tax year or the balances in such accounts as of December 31 of the prior tax year exceed €1,000,000.

Further, to the extent that the Participant holds Shares and/or has bank accounts outside Spain with a value in excess of €50,000 (for each type of asset) as of December 31, the Participant will be required to report information on such assets on his or her tax return (tax form 720) for such year. After such Shares and/or accounts are initially reported, the reporting obligation will apply for subsequent years only if the value of any previously-reported Shares or accounts increases by more than €20,000 or if the Participant sells or otherwise disposes of any previously-reported Shares or accounts.

B-10

SWITZERLAND

Notifications

Securities Law Information.

The grant of the Stock Option under the Plan is considered a private offering in Switzerland and is, therefore, not subject to registration in Switzerland. Neither this document nor any other material related to the Stock Option constitutes a prospectus as such term is understood pursuant to Article 652a of the Swiss Code of Obligations, and neither this document nor any other materials related to the Stock Option may be publicly distributed or otherwise made publicly available in Switzerland. Neither this document nor any other offering or marketing materials relating to the Awards have been or will be filed with, approved or supervised by any Swiss regulatory authority (in particular, the Swiss Financial Market Supervisory Authority (FINMA)).

UNITED KINGDOM

Terms and Conditions

Responsibility for Taxes. The following supplements paragraph B “Responsibility for Taxes” of Appendix A.

Without limitation to the paragraph B “Responsibility for Taxes” of Appendix A, the Participant agrees that the Participant is liable for all Tax-Related Items and hereby covenants to pay all such Tax-Related Items as and when requested by the Company or the Employer or by Her Majesty’s Revenue & Customs (“HMRC”) (or any other tax authority or any other relevant authority). The Participant also agrees to indemnify and keep indemnified the Company and the Employer against any Tax-Related Items that they are required to pay or withhold or have paid or will have to pay to HMRC (or any other tax authority or any other relevant authority) on the Participant’s behalf.

Notwithstanding the foregoing, if the Participant is a Director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934), the Participant may not be able to indemnify the Company or the Employer for the amount of any income tax not collected from or paid by the Participant, as it may be considered a loan. In this case, the amount of any uncollected income tax may constitute a benefit to the Participant on which additional income tax and employee National Insurance contributions (“NICs”) may be payable. The Participant agrees to report and pay any income tax due on this additional benefit directly to HMRC under the self-assessment regime and to pay the Employer for the value of the employee NICs due on this additional benefit, which the Company or the Employer may recover from the Participant by any of the means referred to in the Award Agreement, including the Appendices.

B-11

EX-10.VV

Exhibit 10(vv)

ARCONIC INC.

2013 ARCONIC STOCK INCENTIVE PLAN

STOCK OPTION AWARD AGREEMENT

CHIEF EXECUTIVE OFFICER INITIAL EQUITY AWARD

Grant Date: January 19, 2018

The terms and conditions of this Stock Option Award Agreement are authorized by the Compensation and Benefits Committee of the Board of Directors. The Stock Option award is granted to the Participant under the 2013 Arconic Stock Incentive Plan, as amended and restated and as may be further amended from time to time (the “Plan”). Terms that are defined in the Plan have the same meanings in the Award Agreement.

NOTE: To avoid cancellation of the Stock Option, the Participant must affirmatively accept the Stock Option and the terms of this Award Agreement within 6 months of the grant date, as set forth in paragraph 40 of the Award Agreement.

General Terms and Conditions

1. The Stock Option award is subject to the terms and conditions set forth in the Participant’s account at Merrill Lynch’s OnLine^® website www.benefits.ml.com, the provisions of the Plan and the Award Agreement. If the Plan and the Award Agreement are inconsistent, the provisions of the Plan will govern. Interpretations of the Plan and the Award Agreement by the Committee are binding on the Participant and the Company.

2. The exercise price (or option price) of the Stock Option is 100% of the fair market value per Share on the date of grant, unless the Participant’s account at Merrill Lynch’s OnLine^® website www.benefits.ml.com, specifies a higher exercise price.

3. The expiration date of a Stock Option is ten years after the date of grant.

Vesting and Exercisability

4. The Stock Option vests in full on the fourth anniversary of the grant date.

5. Except as provided in paragraph 7, once vested, a Stock Option may be exercised until its expiration date, as long as the Participant remains an active employee of the Company or a Subsidiary. As an administrative matter, the vested portion of this Stock Option may be exercised only until the close of the New York Stock Exchange on the expiration date or such earlier termination date set forth in paragraph 7 or, if such date is not a business day on the New York Stock Exchange, the last business day before such date. Any later attempt to exercise the Stock Option will not be honored. The Participant is solely responsible for any election to exercise the Stock Option, and the Company has no obligation to provide notice to the Participant of any matter, including, but not limited to, the date the Stock Option terminates. Neither the Company nor any Subsidiary has any liability in the event of the Participant’s failure to timely exercise any vested Stock Option prior to its expiration.

6. Except as provided in paragraph 7:

• as a condition to exercise of a Stock Option, a Participant must remain an active employee of the Company or a Subsidiary until the date the option vests; and

• if the Participant’s employment with the Company (including its Subsidiaries) terminates prior to the vesting date of the Stock Option, the Stock Option is forfeited and is automatically canceled.

1

7. The following are exceptions to the vesting and exercisability rules:

• Death or Disability: a Stock Option held by a Participant, who dies while an Employee or who is permanently and totally disabled while an Employee, is not forfeited but vests in accordance with the original vesting date. In the case of a Participant who dies while an Employee, any Stock Option that is vested must be exercised by a legal representative or beneficiary on the earlier of five years from the date of death or the original expiration date of the Stock Option. In the case of a Participant who is permanently and totally disabled while an Employee, any Stock Option that is vested must be exercised on the earlier of five years from the date of such disability or the original expiration date of the Stock Option.

A Participant is deemed to be permanently and totally disabled if the Participant is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. A Participant shall not be considered to be permanently and totally disabled unless the Participant furnishes proof of the existence thereof in such form and manner, and at such times, as the Company may require. In the event of a dispute, the determination whether a Participant is permanently and totally disabled will be made by the Committee or its delegate.

• Change in Control: a Stock Option vests if a Replacement Award is not provided following certain Change in Control events, as described in the Plan.

• Divestiture: if a Stock Option is held by a Participant who is to be terminated from employment with the Company or a Subsidiary as a result of a divestiture of a business or a portion of a business of the Company and the Participant either becomes an employee of (or is leased or seconded to) the entity acquiring the business on the date of the closing, or the Participant is not offered employment with the entity acquiring the business and is terminated by the Company or a Subsidiary within 90 days of the closing of the sale, then, at the discretion of the Committee:

◦ To the extent unvested, the Stock Option will continue to vest under the original vesting schedule and once vested, will be exercisable until the earlier of the original expiration date of the Stock Option or two years from the date the Participant’s employment with the Company or a Subsidiary has been terminated; and

◦ To the extent vested, the Stock Option will remain exercisable until the earlier of the original expiration date of the Stock Option or two years from the date the Participant’s employment with the Company or a Subsidiary has been terminated.

For purposes of this paragraph, employment by “the entity acquiring the business” includes employment by a subsidiary or affiliate of the entity acquiring the business; and “divestiture of a business” means the sale of assets or stock resulting in the sale of a going concern. “Divestiture of a business” does not include a plant shut down or other termination of a business.

• Termination of Employment: if a Stock Option is held by a Participant whose employment with the Company (including its Subsidiaries) is terminated for any reason other than those described above in this paragraph 7, the Stock Options, if unvested, will be forfeited on the date of termination of employment, and if vested, will remain exercisable for 90 days after the date employment is terminated.

Option Exercise and Payment of Exercise Price

8. A vested, exercisable option is exercised when a signed notification of exercise is received by Merrill Lynch’s OnLine^® website www.benefits.ml.com.

9. Payment in full of the exercise price of a Stock Option is due on the exercise date. Payment of the option exercise price may be made:

• in cash (including a “broker-assisted cashless exercise” described in the next paragraph); or

• by the delivery or presentation of Shares that have an aggregate fair market value on the date of exercise, which, together with any cash payment, equals or exceeds the Stock Option exercise price.

2

10. A Participant may elect to pay the cash exercise price of the option through a “broker-assisted cashless exercise,” using Merrill Lynch’s OnLine^® website www.benefits.ml.com. On or prior to the exercise date, the Participant must deliver the Participant’s instruction directing and obligating the broker to (a) sell Shares (or a sufficient portion of the Shares) acquired upon exercise of the option and (b) remit to the Company a sufficient portion of the sale proceeds to pay the entire exercise price and any tax withholding resulting from the exercise. Such proceeds are due not later than the third trading day after the exercise date.

11. Shares owned by a Participant include (a) those registered in the Participant’s name (or registered jointly with another person), (b) those held in a brokerage account owned by the Participant individually or jointly with another person, and (c) those held in a trust, partnership, limited partnership or other entity for the benefit of the Participant individually (or for the benefit of the Participant jointly with another person). Notwithstanding the foregoing, Shares owned by a Participant do not include Shares held in any qualified plan, IRA or similar tax deferred arrangement or Shares that are otherwise subject to potential accounting limitations regarding their use in stock swap transactions. The Company may require verification or proof of ownership or length of ownership of any shares delivered in payment of the exercise price of an option.

Taxes

12. All taxes required to be withheld under applicable tax laws in connection with the Stock Option must be paid by the Participant immediately upon exercise (or at the time of any other relevant taxable event).

13. The Company may satisfy applicable tax withholding obligations by any of the means set forth in Section 15(l) of the Plan, except that the Company shall not have discretion to withhold Shares from any Shares deliverable upon exercise for as long the Participant is subject to the short-swing profit rules of Section 16(b) of the Securities Exchange Act of 1934, as amended. Withholding taxes in the United States include applicable income taxes, federal and state unemployment compensation taxes and FICA/FUTA taxes.

14. The amount of taxes that may be paid by a Participant may be determined by applying the minimum rates or, to the extent permitted under applicable accounting principles, up to the maximum individual tax rate for the applicable tax jurisdiction required by applicable tax regulations.

15. The Participant acknowledges that neither the Company nor any Subsidiary has made any representation or given any advice to the Participant with respect to taxes.

Beneficiaries

16. If permitted by the Company, Participants will be entitled to designate one or more beneficiaries to receive all Stock Options that are unexercised at the time of the Participant’s death. All beneficiary designations will be on a beneficiary designation form approved for the Plan. Copies of the form are available from the Communications Center on Merrill Lynch’s Benefits OnLine^®www.benefits.ml.com.

17. Beneficiary designations on an approved form will be effective at the time received by Merrill Lynch’s OnLine^® website www.benefits.ml.com. A Participant may revoke a beneficiary designation at any time by written notice to Merrill Lynch’s OnLine^® website www.benefits.ml.com or by filing a new designation form. Any designation form previously filed by a Participant will be automatically revoked and superseded by a later-filed form.

18. A Participant will be entitled to designate any number of beneficiaries on the form, and the beneficiaries may be natural or corporate persons.

19. The failure of any Participant to obtain any recommended signature on the form will not prohibit the Company from treating such designation as valid and effective. No beneficiary will acquire any beneficial or other interest in any Stock Option prior to the death of the Participant who designated such beneficiary.

20. Unless the Participant indicates on the form that a named beneficiary is to receive unexercised options only upon the prior death of another named beneficiary, all beneficiaries designated on the form will be entitled and required to join in the exercise of the option. Unless otherwise indicated, all such beneficiaries will have an equal, undivided interest in all such Stock Options.

3

21. Should a beneficiary die after the Participant but before the option is exercised, such beneficiary’s rights and interest in the option award will be transferable by last will and testament of the beneficiary or the laws of descent and distribution. A named beneficiary who predeceases the Participant will obtain no rights or interest in a stock option award, nor will any person claiming on behalf of such individual. Unless otherwise specifically indicated by the Participant on the beneficiary designation form, beneficiaries designated by class (such as “children,” “grandchildren” etc.) will be deemed to refer to the members of the class living at the time of the Participant’s death, and all members of the class will be deemed to take “percapita.”

22. If a Participant does not designate a beneficiary or if the Company does not permit a beneficiary designation, the Stock Options that are unexercised at the time of death of the Participant will be transferred to the Participant’s legal heirs pursuant to the Participant’s last will and testament or by the laws of descent and distribution and may be exercised by the legal heirs as set forth in paragraph 7.

Transferable Options

23. Upon approval of, and subject to such requirements as may be imposed by, the Company, vested Stock Options may be transferred to one or more immediate family members, individually or jointly. A trust, each of whose beneficiaries is the Participant or an immediate family member, will be deemed to be a family member for purposes of these rules.

24. Any permitted transfer of Stock Options shall be effective on the date written notice thereof, on a form approved for this purpose, is received. Copies of the form are available from the Communications Center on Merrill Lynch’s Benefits OnLine^® website www.benefits.ml.com. As a condition to transfer, the Participant shall agree to remain responsible to pay the applicable taxes due in relation to the option. The Participant or the Participant’s estate will be required to provide sufficient evidence of ability to pay such taxes upon the Company’s request.

25. A transfer shall be irrevocable; no subsequent transfer by the transferee shall be effective. Notwithstanding the foregoing, a transferee shall be entitled to designate a beneficiary in accordance with the provisions of paragraphs 16 through 22 above. Except where a beneficiary has been designated, in the event of death of the transferee prior to option exercise, the transferee’s option will be transferable by last will and testament or the laws of descent and distribution.

26. Except as modified by the provisions of paragraphs 23 through 25, all terms applicable to option exercises by Participants are applicable to exercises by transferees. The Plan administrator may make and publish additional rules applicable to exercises by transferees not inconsistent with these provisions.

Adjustments

27. In the event of an Equity Restructuring, the Committee will equitably adjust the Stock Option as it deems appropriate to reflect the Equity Restructuring, which may include (i) adjusting the number and type of securities subject to the Stock Option; and (ii) adjusting the terms and conditions of the Stock Option, including the exercise price. The adjustments provided under this paragraph 27 will be nondiscretionary and final and binding on all interested parties, including the affected Participant and the Company; provided that the Committee will determine whether an adjustment is equitable.

Repayment/Forfeiture

28. Notwithstanding anything to the contrary herein, pursuant to Section 15(e) of the Plan the Committee has full power and authority, to the extent permitted by governing law, to determine that a Stock Option will be canceled or suspended at any time prior to a Change in Control: (i) if the Participant, without the consent of the Committee, while employed by the Company or a Subsidiary or after termination of such employment, becomes associated with, employed by, renders services to or owns any interest (other than an interest of up to 5% in a publicly traded company or any other nonsubstantial interest, as determined by the Committee) in any business that is in competition with the Company or any Subsidiary; (ii) in the event of the Participant’s willful engagement in conduct which is injurious to the Company or any Subsidiary, monetarily or otherwise; (iii) in the event of an Executive Officer’s misconduct described in Section 15(f) of the Plan; or (iv) in order to comply with applicable laws as described in Section 15(h) of the Plan.

4

Further, as an additional condition of receiving the Stock Option, the Participant agrees that the Stock Option and any benefits or proceeds the Participant may receive hereunder shall be subject to forfeiture and/or repayment to the Company to the extent required (i) under the terms of any recoupment or “clawback” policy adopted by the Company to comply with applicable laws or with the Company’s Corporate Governance Guidelines or other similar requirements, as such policy may be amended from time to time (and such requirements shall be deemed incorporated into the Award Agreement without the Participant’s consent) or (ii) to comply with any requirements imposed under applicable laws and/or the rules and regulations of the securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, including, without limitation, pursuant to Section 954 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010. Further, if the Participant receives any amount in excess of what the Participant should have received under the terms of the Stock Option for any reason (including without limitation by reason of a financial restatement, mistake in calculations or administrative error), all as determined by the Committee, then the Participant shall be required to promptly repay any such excess amount to the Company.

Miscellaneous Provisions

29. Stock Exchange Requirements; Applicable Laws. Notwithstanding anything to the contrary in the Award Agreement, no Shares purchased upon exercise of the Stock Option, and no certificate representing all or any part of such Shares, shall be issued or delivered if, in the opinion of counsel to the Company, such issuance or delivery would cause the Company to be in violation of, or to incur liability under, any securities law, or any rule, regulation or procedure of any U.S. national securities exchange upon which any securities of the Company are listed, or any listing agreement with any such securities exchange, or any other requirement of law or of any administrative or regulatory body having jurisdiction over the Company or a Subsidiary.

30. Shareholder Rights. No person or entity shall be entitled to vote, receive dividends or be deemed for any purpose the holder of any Shares until the Stock Option shall have been duly exercised to purchase such Shares in accordance with the provisions of the Award Agreement.

31. Notices. Any notice required or permitted under the Award Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by confirmed email, telegram, or fax or five days after being deposited in the mail, as certified or registered mail, with postage prepaid, and addressed to the Company at the Company’s principal corporate offices or to the Participant at the address maintained for the Participant in the Company’s records or, in either case, as subsequently modified by written notice to the other party.

32. Severability and Judicial Modification. If any provision of the Award Agreement is held to be invalid or unenforceable under the applicable laws of any country, state, province, territory or other political subdivision or the Company elects not to enforce such restriction, the remaining provisions shall remain in full force and effect and the invalid or unenforceable provision shall be modified only to the extent necessary to render that provision valid and enforceable to the fullest extent permitted by law. If the invalid or unenforceable provision cannot be, or is not, modified, that provision shall be severed from the Award Agreement and all other provisions shall remain valid and enforceable.

33. Successors. The Award Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, on the one hand, and the Participant and his or her heirs, beneficiaries, legatees and personal representatives, on the other hand.

34. Imposition of Other Requirements. The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Stock Option and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

35. Waiver. A waiver by the Company of breach of any provision of the Award Agreement shall not operate or be construed as a waiver of any other provision of the Award Agreement, or of any subsequent breach by the Participant or any other Participant.

36. No Advice Regarding Award. The Company is not providing any tax, legal or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with the Participant’s own personal tax, legal and financial advisors regarding the Participant’s participation in the Plan before taking any action related to the Plan.

5

37. Governing Law and Venue. As stated in the Plan, the Stock Option and the provisions of the Award Agreement and all determinations made and actions taken thereunder, to the extent not otherwise governed by the laws of the United States, shall be governed by the laws of the State of New York, United States of America, without reference to principles of conflict of laws, and construed accordingly. The jurisdiction and venue for any disputes arising under, or any actions brought to enforce (or otherwise relating to), the Stock Option will be exclusively in the courts in the State of New York, County of New York, including the Federal Courts located therein (should Federal jurisdiction exist).

38. Electronic Delivery and Acceptance. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

39. Entire Agreement. The Award Agreement and the Plan embody the entire understanding and agreement of the parties with respect to the subject matter hereof, and no promise, condition, representation or warranty, express or implied, not stated or incorporated by reference herein, shall bind either party hereto.

Acceptance of Award

40. As permitted by Section 15(c) of the Plan, receipt of this Award of Stock Options is subject to the Participant’s acceptance of the Stock Option and the terms of this Award Agreement and the Plan through Merrill Lynch’s OnLine^® website www.benefits.ml.com and/or through such other procedures as may be required by the Company (Participant’s “Acceptance”). To avoid forfeiture of the Stock Option award, the Participant must provide such Acceptance within 6 months of the grant date of the Stock Option. The date as of which the Participant’s Stock Option shall be forfeited, if the Participant has not provided such Acceptance, will generally be set forth in the Participant’s account at Merrill Lynch’s OnLine^® website. If the Participant does not provide Acceptance within this 6 month period, the Award of Stock Options will be cancelled in accordance with any administrative procedures adopted under the Plan.

6

EX-10.X(1)

Exhibit 10(x)(1)

FIRST AMENDMENT TO ARCONIC

SUPPLEMENTAL PENSION PLAN FOR SENIOR EXECUTIVES

(as amended and restated August 1, 2016)

Pursuant to Section 5.1 of the Arconic Supplemental Pension Plan for Senior Executives (“Plan”), the Plan is amended effective January 1, 2018, as follows:

1.    Section 2.6 of the Plan shall be amended and restated to require that a Participant who terminates employment on or after January 1, 2018 will be distributed his or her benefit in the form of an immediate lump sum where the present value of such Participant’s nonqualified benefits under all nonqualified defined benefit plans of Arconic Inc. and all members of its controlled group of corporations, not otherwise payable under the provisions of the Plan, shall be equal to or less than the Internal Revenue Code Section 402(g) limit, as follows (with new language underlined and deleted language stricken):

“2.6 Notwithstanding any provision to the contrary in this Excess Plan, if at any time the present value of a Participant’s nonqualified benefits under all nonqualified defined benefit plans of the Company and all members of its controlled group of corporations, not otherwise payable under the provisions of the Plan, shall be equal to or less than the Code Section 402(g) limit in effect at the time of any payment event (for 20162017, $18,000 or less and as adjusted from time to time by the Internal Revenue Service):,

(i) The Company may, in the sole and absolute discretion of the Company, elect to distribute the entire Excess Benefits to the Participant in the form of a lump sum payment, in lieu of any other Excess Benefits payable under the Plan; or

(ii) If the participant terminates employment with the Company, Arconic Inc., or any subsidiary of Arconic Inc., on or after January 1, 2018, the participant’s entire benefit under this Plan shall be distributed immediately in the form of a lump sum, in lieu of any other benefit payable under the Plan.

The present value shall be determined by the Company, in the sole and absolute discretion of the Company, using reasonable actuarial assumptions. The distribution of the lump sum shall be made as soon as reasonably practicable, but no later than ninety (90) days after a payment event or two and one-half (2 ½) months after the year of the payment event, whichever is later. ThisAnypayment under this subsection shall extinguish any and all liability under this Excess Plan and any and all the plans from which the lump sum is provided.”

2.    In all other respects, the Plan is ratified and confirmed.

EX-10.X(2)

Exhibit 10(x)(2)

SECOND AMENDMENT TO ARCONIC

SUPPLEMENTAL PENSION PLAN FOR SENIOR EXECUTIVES

(as amended and restated August 1, 2016)

Pursuant to Section 5.1 of the Arconic Supplemental Pension Plan for Senior Executives (“Plan”), the Plan is amended effective January 1, 2018, as follows:

1.    Article I (“Definitions”) of the Plan shall be amended by deleting definition of “Committee” therefrom.

2.     Article I (“Definitions”) of the Plan shall be amended by inserting the following definitions of “Benefits Investments Committee” and “Benefits Management Committee” therein:

“Benefits Investments Committee” means the Benefits Investments Committee of Arconic Inc., which shall have authority over the investment and management of any and all corporate assets attributable or allocated to this Plan (to the extent that this Plan becomes funded). Prior to January 1, 2018, such authority was vested in the Benefits Management Committee.

“Benefits Management Committee” means the Benefits Management Committee of Arconic Inc. (previously known as the Benefits Management Committee of Alcoa Inc.), which shall have powers over administration of the Plan as provided herein.

3.    Article I (“Definitions”) of the Plan shall be amended by restating the definition of “Company” as follows (with new language underlined and deleted language stricken):

“Company” means Arconic Inc. (previously known as Alcoa Inc.).Alcoa Inc. It is contemplated that Alcoa Inc. will formally change its corporate name to Arconic Inc. in the second half of 2016.

4.    References in the Plan to the “Committee” in the following sections shall be revised to be references to the “Benefits Management Committee”: 4.1, 5.1, and 7.1.

5.    Section 3.1 of the Plan shall be amended by inserting the following sentence at the end thereof:

To the extent that this Plan becomes funded in the future, the Benefits Investments Committee shall have authority over the investment and management of any and all corporate assets attributable or allocated to the Plan. In this regard, the Benefits Investments Committee shall have the authority to approve, to adopt and to amend, to merge and to terminate any trust established to secure any such assets.

6.    In all other respects, the Plan is ratified and confirmed.

EX-12

Exhibit 12

COMPUTATIONS OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

(in millions, except ratios)

For the year ended December 31,	2017		2016			2015		2014		2013
Earnings:
Income loss from continuing operations before income taxes	$	470	$	414		$	183	$	113	$	931
Equity loss (income)	—		(22		)	6		18		(12		)
Fixed charges added to earnings	513		556			534		512		493
Distributed income of less than 50 percent-owned persons	—		66			152		86		89
Amortization of capitalized interest:
Consolidated	13		36			42		47		46
Total earnings	$	996	$	1,050		$	917	$	776	$	1,547
Fixed Charges:
Interest expense
Consolidated	$	496	$	526		$	498	$	473	$	453
	496		526			498		473		453
Amount representative of the interest factor in rents:
Consolidated	17		30			36		39		40
	17		30			36		39		40
Fixed charges added to earnings	513		556			534		512		493
Interest capitalized:
Consolidated	22		45			57		56		99
	22		45			57		56		99
Total fixed charges	$	535	$	601		$	591	$	568	$	592
Pretax earnings required to pay preferred stock dividends*	66		107			107		32		3
Combined total fixed charges and preferred stock dividends	$	601	$	708		$	698	$	600	$	595
Ratio of earnings to fixed charges	1.86		1.75			1.55		1.37		2.61
Ratio of earnings to combined fixed charges and preferred stock dividends	1.66		1.48			1.31		1.29		2.60

* 2017 is based on a U.S. statutory tax rate of 21%. 2013-2016 is based on a U.S. statutory tax rate of 35%

EX-21

Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

(As of December 31, 2017)

Name	State or Country of Organization
Arconic Domestic LLC	Delaware
Arconic Securities LLC	Delaware
Howmet International Inc.	Delaware
Howmet Holdings Corporation	Delaware
Howmet Corporation	Delaware
Howmet Castings & Services, Inc.	Delaware
Arconic International Holding Company LLC	Delaware
Arconic Luxembourg S.à r.l.	Luxembourg
Arconic Inversiones España S.L.	Spain
Arconic Holding GmbH	Germany
AOS Beteiligungs GmbH	Germany
Arconic Inversiones Internacionales S.L.	Spain
Arconic-Köfém Kft	Hungary
OOO Arconic Rus Investment Holdings	Russia
ZAO Arconic SMZ	Russia
Howmet SAS	France
Arconic Holding France SAS	France
Arconic Global Treasury Services S.a.r.l.	Luxembourg
Arconic UK Holdings Limited	United Kingdom
Arconic Manufacturing (G.B.) Limited	United Kingdom
Alumax LLC	Delaware
Alumax Mill Products, Inc.	Delaware
Kawneer Company, Inc.	Delaware
Cordant Technologies Holding Company	Delaware
Arconic Global Fasteners & Rings, Inc.	Delaware
Huck International Inc.	Delaware
FR Acquisition Corporation (US), Inc.	Delaware
JFB Firth Rixson Inc.	Delaware

The names of particular subsidiaries have been omitted because, considered in the aggregate as a single subsidiary, they would not constitute, as of the end of the year covered by this report, a “significant subsidiary” as that term is defined in Regulation S-X under the Securities Exchange Act of 1934.

EX-23

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (Nos. 333-32516, 333-106411, 333-128445, 333-146330, 333-153369, 333-155668, 333-159123, 333-168428, 333-170801, 333-182899, 333-189882, 333-203275, 333-209772, and 333-212246) of Arconic Inc. of our report dated February 23, 2018 relating to the financial statementsand the effectiveness of internal control over financial reporting, which appears in this Form 10‑K.

/s/ PricewaterhouseCoopers LLP

Pittsburgh, Pennsylvania

February 23, 2018

EX-24

Exhibit 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS that each of the undersigned Directors of Arconic Inc. (the “Company”) hereby constitutes and appoints KEN GIACOBBE, PETER HONG, W. PAUL MYRON and KATHERINE H. RAMUNDO, or any of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution, to do any and all acts and things and to execute any and all instruments that said attorneys-in-fact and agents, or any of them, may deem necessary or advisable or may be required:

(1) To enable the Company to comply with the Securities Exchange Act of 1934, as amended (the “1934 Act”), and any rules, regulations or requirements of the Securities and Exchange Commission (the “Commission”) in respect thereof, in connection with the filing under the 1934 Act of the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (the “2017 Annual Report”), including specifically, but without limiting the generality of the foregoing, power and authority to sign the name of each of the undersigned in the capacity of Director of the Company to the 2017 Annual Report to be filed with the Commission and to any instruments or documents filed as part of or in connection with the 2017 Annual Report, including any amendments or supplements thereto;

(2) To enable the Company to comply with the Securities Act of 1933, as amended (the “1933 Act”), and any rules, regulations or requirements of the Commission in respect thereof, in connection with the registration under the 1933 Act during 2018 of the offer and sale or delivery of shares of common stock of the Company to be issued under the 2013 Alcoa Stock Incentive Plan, as such plan may be amended and/or restated from time to time (including any amendments thereto or restatements thereof, the “2013 Plan”), the 2009 Alcoa Stock Incentive Plan (the “2009 Plan”), the RTI International Metals, Inc. 2014 Stock and Incentive Plan, as amended (the “RTI 2014 Plan”) and the RTI International Metals, Inc. 2004 Stock Plan, as amended (the “RTI 2004 Plan”), including specifically, but without limiting the generality of the foregoing, power and authority to sign the name of each of the undersigned in the capacity of Director of the Company to any registration statement on Form S-8, or on such other form as may be appropriate, to be filed with the Commission in respect of said shares and the 2013 Plan, the 2009 Plan, the RTI 2014 Plan or the RTI 2004 Plan, or any of them, to any and all pre-effective amendments, post-effective amendments and supplements to any such registration statement, and to any instruments or documents filed as part of or in connection with any such registration statement or any such amendments or supplements thereto; and

(3) To enable the Company to comply with the 1933 Act, and any rules, regulations or requirements of the Commission in respect thereof, in connection with the registration under the 1933 Act during 2018 of the offer and sale or delivery of shares of common stock of the Company to be issued under the Company’s employee retirement savings plans (together with interests in such plans), including, without limitation, the Arconic Bargaining Retirement Savings Plan, the Arconic Salaried Retirement Savings Plan, the Arconic Hourly Non-Bargaining Retirement Savings Plan, the Arconic Fastener Systems and Rings Retirement Savings Plan, the Arconic Retirement Savings Plan for ATEP Bargaining Employees, and employee retirement or other savings plans sponsored by the Company or its subsidiaries or entities acquired by the Company from time to time (the “Plans”), including specifically, but without limiting the generality of the foregoing, power and authority to sign the name of each of the undersigned in the capacity of Director of the Company to any registration statement on Form S-8, or on such other form as may be appropriate, to be filed with the Commission in respect of said shares and the Plans (or interests in such Plans), or any of them, to any and all pre-effective amendments, post-effective amendments and supplements to any such registration statement, and to any instruments or documents filed as part of or in connection with any such registration statement or any such amendments or supplements thereto; and

(4) To enable the Company to comply with the 1933 Act, and any rules, regulations or requirements of the Commission in respect thereof, in connection with the registration under the 1933 Act on an unallocated basis of the Company’s securities, including debt securities, preferred stock, common stock and hybrid securities (including convertible or exchangeable securities); warrants to purchase debt or equity securities of the Company; stock purchase contracts and stock purchase units; and trust preferred securities of a trust or similar vehicle and related guarantees thereof by the Company, including specifically, but without limiting the generality of the foregoing, power and authority (i) to sign the name of each of the undersigned in the capacity of Director of the Company to one or more registration statements on Form S-3 or such other form as such attorneys-in-fact, or any of them, may deem necessary or desirable (including any registration statement filed pursuant to Rule 462 under the 1933 Act), and to any and all amendments and post-effective amendments and supplements to any such registration statements, and to any and all instruments or documents filed as part of or in connection with any such registration statements or amendments or supplements thereto, and (ii) to file the same with all exhibits thereto with the Commission; and

granting unto each of said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as the undersigned might or could do in person, and each of the undersigned hereby ratifies and confirms all that said attorneys-in-fact and agents, or any of them, shall do or cause to be done by virtue hereof.

This power of attorney will be governed by and construed in accordance with the laws of the State of Delaware. The execution of this power of attorney is not intended to, and does not, revoke any prior powers of attorney. This power of attorney may be signed in any number of counterparts, each of which shall constitute an original and all of which, taken together, shall constitute one power of attorney.

IN WITNESS WHEREOF, each of the undersigned has subscribed these presents this 22nd day of February 2018.

/s/ James F. Albaugh	/s/ Christopher L. Ayers
James F. Albaugh	Christopher L. Ayers
/s/ Arthur D. Collins, Jr.	/s/ Elmer L. Doty
Arthur D. Collins, Jr.	Elmer L. Doty
/s/ Rajiv L. Gupta	/s/ David P. Hess
Rajiv L. Gupta	David P. Hess
/s/ Sean O. Mahoney	/s/ David J. Miller
Sean O. Mahoney	David J. Miller
/s/ E. Stanley O’Neal	/s/ John C. Plant
E. Stanley O’Neal	John C. Plant
/s/ Patricia F. Russo	/s/ Ulrich R. Schmidt
Patricia F. Russo	Ulrich R. Schmidt

EX-31

Exhibit 31

Certifications

I, Charles P. Blankenship, certify that:

1. I have reviewed this annual report on Form 10-K of Arconic Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 23, 2018

/s/ Charles P. Blankenship

Name: Charles P. Blankenship

Title: Chief Executive Officer

I, Ken Giacobbe, certify that:

1. I have reviewed this annual report on Form 10-K of Arconic Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 23, 2018

/s/ Ken Giacobbe

Name: Ken Giacobbe

Title: Executive Vice President and Chief Financial Officer

EX-32

Exhibit 32

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), each of the undersigned officers of Arconic Inc., a Pennsylvania corporation (the “Company”), does hereby certify that:

The Annual Report on Form 10-K for the year ended December 31, 2017 (the “Form 10-K”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	February 23, 2018	/s/ Charles P. Blankenship
		Name:	Charles P. Blankenship
		Title:	Chief Executive Officer
Dated:	February 23, 2018	/s/ Ken Giacobbe
		Name:	Ken Giacobbe
		Title:	Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Form 10-K and shall not be considered filed as part of the Form 10-K.

XML

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2017	Feb. 16, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Trading Symbol	ARNC
Entity Registrant Name	Arconic Inc.
Entity Central Index Key	0000004281
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		482,772,252
Entity Public Float			$ 10

XML

Statement of Consolidated Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Sales (N)	$ 12,960	$ 12,394	$ 12,413
Cost of goods sold (exclusive of expenses below)	10,357	9,811	10,104
Selling, general administrative, and other expenses (C)	731	942	765
Research and development expenses	111	132	169
Provision for depreciation and amortization	551	535	508
Impairment of goodwill (A and E)	719	0	25
Restructuring and other charges (D)	165	155	214
Operating income	326	819	628
Interest expense (S)	496	499	473
Other income, net (L)	640	94	28
Income from continuing operations before income taxes	470	414	183
Provision for income taxes (Q)	544	1,476	339
Loss from continuing operations after income taxes	(74)	(1,062)	(156)
Income (loss) from discontinued operations after income taxes (C)	0	184	(41)
Net loss	(74)	(878)	(197)
Less: Net income from continuing operations attributable to noncontrolling interests	0	0	1
Less: Net income from discontinued operations attributable to noncontrolling interests (C)	0	63	124
Net loss attributable to Arconic	(74)	(941)	(322)
Amounts Attributable to Arconic Common Shareholders (P):
Net loss	$ (127)	$ (1,010)	$ (391)
(Loss) earnings per share—basic:
Continuing operations (in usd per share)	$ (0.28)	$ (2.58)	$ (0.54)
Discontinued operations (in usd per share)	0.00	0.27	(0.39)
Net loss per share-basic (in usd per share)	(0.28)	(2.31)	(0.93)
(Loss) earnings per share—diluted
Continuing operations (in usd per share)	(0.28)	(2.58)	(0.54)
Discontinued operations (in usd per share)	0.00	0.27	(0.39)
Net loss per share-diluted (in usd per share)	$ (0.28)	$ (2.31)	$ (0.93)

XML

Statement of Consolidated Comprehensive (Loss) Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net (loss) income	$ (74)	$ (878)	$ (197)
Other comprehensive (loss) income, net of tax (B):
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	(220)	(482)	(2)
Foreign currency translation adjustments	254	450	(1,995)
Net change in unrealized gains on available-for-sale securities	(134)	137	(5)
Net change in unrecognized gains (losses) on cash flow hedges	26	(612)	826
Total Other comprehensive (loss) income, net of tax	(74)	(507)	(1,176)
Comprehensive (loss) income	(148)	(1,385)	(1,373)
Arconic
Net (loss) income	(74)	(941)	(322)
Other comprehensive (loss) income, net of tax (B):
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	(220)	(479)	(10)
Foreign currency translation adjustments	252	268	(1,566)
Net change in unrealized gains on available-for-sale securities	(134)	137	(5)
Net change in unrecognized gains (losses) on cash flow hedges	26	(617)	827
Total Other comprehensive (loss) income, net of tax	(76)	(691)	(754)
Comprehensive (loss) income	(150)	(1,632)	(1,076)
Noncontrolling Interests
Net (loss) income	0	63	125
Other comprehensive (loss) income, net of tax (B):
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	0	(3)	8
Foreign currency translation adjustments	2	182	(429)
Net change in unrealized gains on available-for-sale securities	0	0	0
Net change in unrecognized gains (losses) on cash flow hedges	0	5	(1)
Total Other comprehensive (loss) income, net of tax	2	184	(422)
Comprehensive (loss) income	$ 2	$ 247	$ (297)

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Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents (U)	$ 2,150	$ 1,863
Receivables from customers, less allowances of $8 in 2017 and $13 in 2016 (R)	1,035	974
Other receivables (C and R)	339	477
Inventories (G)	2,480	2,253
Prepaid expenses and other current assets	374	325
Total current assets	6,378	5,892
Properties, plants, and equipment, net (H)	5,594	5,499
Goodwill (A and E)	4,535	5,148
Deferred income taxes (Q)	743	1,234
Investment in common stock of Alcoa Corporation (C and U)	0	1,020
Intangibles, net (E)	987	988
Other noncurrent assets	481	257
Total Assets	18,718	20,038
Current liabilities:
Accounts payable, trade	1,839	1,744
Accrued compensation and retirement costs	399	398
Taxes, including income taxes	75	85
Accrued interest payable	124	153
Other current liabilities	349	329
Short-term debt (I and U)	38	40
Total current liabilities	2,824	2,749
Long-term debt, less amount due within one year (I and U)	6,806	8,044
Accrued pension benefits (T)	2,564	2,345
Accrued other postretirement benefits (T)	841	889
Other noncurrent liabilities and deferred credits (J)	759	870
Total liabilities	13,794	14,897
Arconic shareholders’ equity:
Preferred stock (O)	55	55
Mandatory convertible preferred stock (O)	0	3
Common stock (O)	481	438
Additional capital	8,266	8,214
Accumulated deficit	(1,248)	(1,027)
Accumulated other comprehensive loss (B)	(2,644)	(2,568)
Total Arconic shareholders’ equity	4,910	5,115
Noncontrolling interests	14	26
Total equity	4,924	5,141
Total Liabilities and Equity	$ 18,718	$ 20,038

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Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Receivables from customers, allowance	$ 8	$ 13

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Statement of Consolidated Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash from Operations
Net (loss) income	$ (74)	$ (878)	$ (197)
Adjustments to reconcile net loss to cash from operations:
Depreciation, depletion and amortization	551	1,132	1,280
Deferred income taxes	434	1,125	34
Equity income, net of dividends	0	42	158
Impairment of goodwill (A and E)	719	0	25
Restructuring and other charges	165	257	1,195
Net gain from investing activities—asset sales	(513)	(156)	(74)
Net periodic pension benefit cost	217	304	485
Stock-based compensation	67	86	92
Excess tax benefits from stock-based payment arrangements	0	0	(9)
Other	61	60	(32)
Changes in assets and liabilities, excluding effects of acquisitions, divestitures, and foreign currency translation adjustments:
(Increase) decrease in receivables	(124)	(238)	212
(Increase) in inventories	(192)	(29)	(64)
Decrease (increase) in prepaid expenses and other current assets	11	(76)	46
Increase (decrease) in accounts payable, trade	62	232	(90)
(Decrease) in accrued expenses	(116)	(394)	(437)
(Decrease) increase in taxes, including income taxes	(23)	93	25
Pension contributions	(310)	(290)	(470)
(Increase) in noncurrent assets	(41)	(152)	(370)
(Decrease) in noncurrent liabilities	(193)	(248)	(227)
Cash provided from operations	701	870	1,582
Financing Activities
Net change in short-term borrowings (original maturities of three months or less)	(2)	(3)	(16)
Additions to debt (original maturities greater than three months)	816	1,962	1,901
Payments on debt (original maturities greater than three months)	(1,634)	(2,734)	(2,030)
Proceeds from exercise of employee stock options	50	4	25
Excess tax benefits from stock-based payment arrangements	0	0	9
Dividends paid to shareholders	(162)	(228)	(223)
Distributions to noncontrolling interests	(14)	(226)	(106)
Contributions from noncontrolling interests	0	51	2
Net cash transferred from Alcoa Corporation at separation	0	421	0
Other	(17)	(1)	(3)
Cash used for financing activities	(963)	(754)	(441)
Investing Activities
Capital expenditures	(596)	(1,125)	(1,180)
Acquisitions, net of cash acquired (F and M)	0	10	97
Proceeds from the sale of assets and businesses (M)	(9)	692	112
Additions to investments	(2)	(52)	(134)
Sales of investments (C and M)	890	280	40
Net change in restricted cash	12	14	(20)
Other (C)	245	16	25
Cash provided from (used for) investing activities	540	(165)	(1,060)
Effect of exchange rate changes on cash and cash equivalents	9	(7)	(39)
Net change in cash and cash equivalents	287	(56)	42
Cash and cash equivalents at beginning of year	1,863	1,919	1,877
Cash and cash equivalents at end of year	$ 2,150	$ 1,863	$ 1,919

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Statement of Changes in Consolidated Equity - USD ($) $ in Millions	Total	Preferred Class A	Preferred Class B	Preferred stock	Mandatory convertible preferred stock	Common stock	Additional capital	Retained earnings (deficit)	Retained earnings (deficit) Preferred Class A	Retained earnings (deficit) Preferred Class B	Treasury stock	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balance at beginning of period at Dec. 31, 2014	$ 14,794			$ 55	$ 3	$ 1,304	$ 9,284	$ 9,379			$ (3,042)	$ (4,677)	$ 2,488
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(197)							(322)					125
Other comprehensive loss (B)	(1,176)											(754)	(422)
Cash dividends declared:
Cash dividends declared, preferred		$ (2)	$ (67)						$ (2)	$ (67)
Cash dividends declared, common	(154)							(154)
Equity option on convertible notes (F)	55						55
Stock-based compensation (O)	92						92
Common stock issued: compensation plans (O)	22						(195)				217
Issuance of common stock (F and O)	870					87	783
Distributions	(106)												(106)
Contributions	2												2
Other	(2)
Balance at end of period at Dec. 31, 2015	14,131			55	3	1,391	10,019	8,834			(2,825)	(5,431)	2,085
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(878)							(941)					63
Other comprehensive loss (B)	(507)											(691)	184
Cash dividends declared:
Cash dividends declared, preferred		(2)	(67)						(2)	(67)
Cash dividends declared, common	(159)							(159)
Stock-based compensation (O)	86						86
Common stock issued: compensation plans (O)	(19)						(205)				186
Distributions	(226)												(226)
Contributions	51												51
Retirement of Treasury stock (O)	0					(76)	(2,563)				2,639
Reverse stock split (O)	0					(877)	877
Distribution of Alcoa Corporation	(7,271)							(8,692)				3,554	(2,133)
Other	2												2
Balance at end of period at Dec. 31, 2016	5,141			55	3	438	8,214	(1,027)			0	(2,568)	26
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(74)							(74)					0
Other comprehensive loss (B)	(74)											(76)	2
Cash dividends declared:
Cash dividends declared, preferred		$ (2)	$ (51)						$ (2)	$ (51)
Cash dividends declared, common	(109)							(109)
Stock-based compensation (O)	67						67
Common stock issued: compensation plans (O)	21						21
Issuance of common stock (F and O)	4					4
Distributions	(14)												(14)
Conversion of mandatory convertible preferred stock (O)	0				(3)	39	(36)
Other	15							15					0
Balance at end of period at Dec. 31, 2017	$ 4,924			$ 55	$ 0	$ 481	$ 8,266	$ (1,248)			$ 0	$ (2,644)	$ 14

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Statement of Changes in Consolidated Equity (Parenthetical) - $ / shares	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Common Stock, dividends declared per share (usd per share)	$ 0.06	$ 0.24	$ 0.36	$ 0.12
Preferred Class A
Preferred, dividends per share (usd per share)		3.75	3.75	3.75
Preferred Class B
Preferred, dividends per share (usd per share)		$ 20.1563	$ 26.875	$ 26.8750

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation. The Consolidated Financial Statements of Arconic Inc. and subsidiaries (“Arconic” or the “Company”) are prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) and require management to make certain judgments, estimates, and assumptions. These may affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. They also may affect the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates upon subsequent resolution of identified matters. Certain prior year amounts have been reclassified to conform to the current year presentation.

The separation of Alcoa Inc. into two standalone, publicly-traded companies, Arconic Inc. (the new name for Alcoa Inc.) and Alcoa Corporation, became effective on November 1, 2016 (the “Separation Transaction”). The financial results of Alcoa Corporation for all periods prior to the Separation Transaction have been retrospectively reflected in the Statement of Consolidated Operations as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented prior to the Separation Transaction. The cash flows and comprehensive income related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows and Statement of Consolidated Comprehensive (Loss) Income, respectively, for all periods presented. See Note C for additional information related to the Separation Transaction and discontinued operations.

Principles of Consolidation. The Consolidated Financial Statements include the accounts of Arconic and companies in which Arconic has a controlling interest. Intercompany transactions have been eliminated. Investments in affiliates in which Arconic cannot exercise significant influence are accounted for on the cost method.

Management also evaluates whether an Arconic entity or interest is a variable interest entity and whether Arconic is the primary beneficiary. Consolidation is required if both of these criteria are met. Arconic does not have any variable interest entities requiring consolidation.

Related Party Transactions. Arconic buys products from and provides services to Alcoa Corporation following the separation at negotiated prices between the parties. These transactions were not material to the financial position or results of operations of Arconic for all periods presented. Effective May 2017, upon disposition of the remaining common stock that Arconic held in Alcoa Corporation, they are no longer deemed a related party.

Cash Equivalents. Cash equivalents are highly liquid investments purchased with an original maturity of three months or less.

Inventory Valuation. Inventories are carried at the lower of cost and net realizable value, with cost for approximately half of U.S. inventories determined under the last-in, first-out (LIFO) method. The cost of other inventories is determined under a combination of the first-in, first-out (FIFO) and average-cost methods.

Properties, Plants, and Equipment. Properties, plants, and equipment are recorded at cost. Depreciation is recorded principally on the straight-line method at rates based on the estimated useful lives of the assets. The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):

Segment	Structures	Machinery and equipment
Engineered Products and Solutions	29	17
Global Rolled Products	31	21
Transportation and Construction Solutions	27	18

Gains or losses from the sale of assets are generally recorded in Other income, net (see policy below for assets classified as held for sale and discontinued operations). Repairs and maintenance are charged to expense as incurred. Interest related to the construction of qualifying assets is capitalized as part of the construction costs.

Properties, plants, and equipment are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets (asset group) may not be recoverable. Recoverability of assets is determined by comparing the estimated undiscounted net cash flows of the operations related to the assets (asset group) to their carrying amount. An impairment loss would be recognized when the carrying amount of the assets (asset group) exceeds the estimated undiscounted net cash flows. The amount of the impairment loss to be recorded is calculated as the excess of the carrying value of the assets (asset group) over their fair value, with fair value determined using the best information available, which generally is a discounted cash flow (DCF) model. The determination of what constitutes an asset group, the associated estimated undiscounted net cash flows, and the estimated useful lives of assets also require significant judgments. See Note F for information regarding asset impairments.

Goodwill. Goodwill is not amortized; instead, it is reviewed for impairment annually (in the fourth quarter) or more frequently if indicators of impairment exist or if a decision is made to sell or realign a business. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.

Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. Arconic has eight reporting units, of which four are included in the Engineered Products and Solutions segment, three are included in the Transportation and Construction Solutions segment, and the remaining reporting unit is the Global Rolled Products segment. More than 85% of Arconic’s total goodwill at December 31, 2017 is allocated to two reporting units as follows: Arconic Fastening Systems and Rings (AFSR) ($2,221) and Arconic Power and Propulsion (APP) ($1,686) businesses, both of which are included in the Engineered Products and Solutions segment. These amounts include an allocation of Corporate’s goodwill.

In reviewing goodwill for impairment, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test.

Arconic determines annually, based on facts and circumstances, which of its reporting units will be subject to the qualitative assessment. For those reporting units where a qualitative assessment is either not performed or for which the conclusion is that an impairment is more likely than not, a quantitative impairment test will be performed. Arconic’s policy is that a quantitative impairment test be performed for each reporting unit at least once during every three-year period.

Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Additionally, an assessment of the level of impact that a particular factor would have on the estimated fair value is determined using high, medium, and low weighting. Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital (WACC) between the current and prior years for each reporting unit.

During the 2017 annual review of goodwill, management performed the qualitative assessment for one reporting unit, Arconic Wheel and Transportation Products (within the Transportation and Construction Solutions segment). Management concluded that it was not more likely than not that the estimated fair value of the reporting unit was less than its carrying value. As such, no further analysis was required.

Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. Arconic uses a discounted cash flow model (DCF) to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, production costs, tax rates, capital spending, discount rate, and working capital changes. Most of these assumptions vary significantly among the reporting units. Cash flow forecasts are generally based on approved business unit operating plans for the early years and historical relationships in later years. The WACC rate for the individual reporting units is estimated with the assistance of valuation experts. Arconic would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit.

During the 2017 annual review of goodwill, management proceeded directly to the quantitative impairment test for six reporting units as follows: AFSR, APP, Arconic Titanium and Engineered Products (ATEP), and Arconic Forgings and Extrusions (AFE), which are all included in the Engineered Products and Solutions segment, Global Rolled Products, and Building and Construction Systems, which is included in the Transportation and Construction Solutions segment. The estimated fair value for five of the six reporting units exceeded its respective carrying value, resulting in no impairment. However, the estimated fair value of AFE was lower than its carrying value. As such, in the fourth quarter of 2017, Arconic recorded an impairment for the full amount of goodwill in the AFE reporting unit of $719. The decrease in the AFE fair value was primarily due to unfavorable performance that is impacting operating margins and a higher discount rate due to an increase in the risk-free rate of return, while the carrying value increased compared to prior year.

Goodwill impairment tests in 2016 and 2015 indicated that goodwill was not impaired for any of the Company’s reporting units, except for the soft alloy extrusion business in Brazil which is included in the Transportation and Construction Solutions segment. In the fourth quarter of 2015, for the soft alloy extrusion business in Brazil, the estimated fair value as determined by the DCF model was lower than the associated carrying value of its reporting unit’s goodwill. As a result, management determined that the implied fair value of the reporting unit’s goodwill was zero. Arconic recorded a goodwill impairment of $25 in 2015. The impairment of goodwill resulted from headwinds from the downturn in the Brazilian economy and the continued erosion of gross margin despite the execution of cost reduction strategies. As a result of the goodwill impairment, there is no goodwill remaining for the reporting unit.

Other Intangible Assets. Intangible assets with indefinite useful lives are not amortized while intangible assets with finite useful lives are amortized generally on a straight-line basis over the periods benefited. The following table details the weighted-average useful lives of software and other intangible assets by reporting segment (numbers in years):

Segment	Software	Other intangible assets
Engineered Products and Solutions	6	34
Global Rolled Products	6	9
Transportation and Construction Solutions	5	16

Revenue Recognition. Arconic recognizes revenues when title, ownership, and risk of loss pass to the customer, all of which occurs upon shipment or delivery of the product and is based on the applicable shipping terms. The shipping terms vary across all businesses and depend on the product, the country of origin, and the type of transportation (truck, train, or vessel).

In certain circumstances, Arconic receives advanced payments from its customers for product to be delivered in future periods. These advanced payments are recorded as deferred revenue until the product is delivered and title and risk of loss have passed to the customer in accordance with the terms of the contract. Deferred revenue is included in Other current liabilities and Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet.

Environmental Matters. Expenditures for current operations are expensed or capitalized, as appropriate. Expenditures relating to existing conditions caused by past operations, which will not contribute to future revenues, are expensed. Liabilities are recorded when remediation costs are probable and can be reasonably estimated. The liability may include costs such as site investigations, consultant fees, feasibility studies, outside contractors, and monitoring expenses. Estimates are generally not discounted or reduced by potential claims for recovery. Claims for recovery are recognized when probable and as agreements are reached with third parties. The estimates also include costs related to other potentially responsible parties to the extent that Arconic has reason to believe such parties will not fully pay their proportionate share. The liability is continuously reviewed and adjusted to reflect current remediation progress, prospective estimates of required activity, and other factors that may be relevant, including changes in technology or regulations.

Litigation Matters. For asserted claims and assessments, liabilities are recorded when an unfavorable outcome of a matter is deemed to be probable and the loss is reasonably estimable. Management determines the likelihood of an unfavorable outcome based on many factors such as the nature of the matter, available defenses and case strategy, progress of the matter, views and opinions of legal counsel and other advisors, applicability and success of appeals processes, and the outcome of similar historical matters, among others. Once an unfavorable outcome is deemed probable, management weighs the probability of estimated losses, and the most reasonable loss estimate is recorded. If an unfavorable outcome of a matter is deemed to be reasonably possible, then the matter is disclosed and no liability is recorded. With respect to unasserted claims or assessments, management must first determine that the probability that an assertion will be made is likely, then, a determination as to the likelihood of an unfavorable outcome and the ability to reasonably estimate the potential loss is made. Legal matters are reviewed on a continuous basis to determine if there has been a change in management’s judgment regarding the likelihood of an unfavorable outcome or the estimate of a potential loss.

Income Taxes. The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of Arconic’s assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted.

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than not threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitations has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.

Stock-based Compensation. Arconic recognizes compensation expense for employee equity grants using the non-substantive vesting period approach, in which the expense is recognized ratably over the requisite service period based on the grant date fair value. Forfeitures are accounted for as they occur. The fair value of new stock options is estimated on the date of grant using a lattice-pricing model. The fair value of performance awards containing a market condition is valued using a Monte Carlo valuation model. Determining the fair value at the grant date requires judgment, including estimates for the average risk-free interest rate, dividend yield, volatility, and exercise behavior. These assumptions may differ significantly between grant dates because of changes in the actual results of these inputs that occur over time.

Most plan participants can choose whether to receive their award in the form of stock options, stock awards, or a combination of both. This choice is made before the grant is issued and is irrevocable.

Foreign Currency. The local currency is the functional currency for Arconic’s significant operations outside the United States, except for certain operations in Canada and Russia, where the U.S. dollar is used as the functional currency. The determination of the functional currency for Arconic’s operations is made based on the appropriate economic and management indicators.

Acquisitions. Arconic’s business acquisitions are accounted for using the acquisition method. The purchase price is allocated to the assets acquired and liabilities assumed based on their estimated fair values. Any excess purchase price over the fair value of the net assets acquired is recorded as goodwill. For all acquisitions, operating results are included in the Statement of Consolidated Operations from the date of the acquisition.

Discontinued Operations and Assets Held For Sale. For those businesses where management has committed to a plan to divest, each business is valued at the lower of its carrying amount or estimated fair value less cost to sell. If the carrying amount of the business exceeds its estimated fair value, an impairment loss is recognized. Fair value is estimated using accepted valuation techniques such as a DCF model, valuations performed by third parties, earnings multiples, or indicative bids, when available. A number of significant estimates and assumptions are involved in the application of these techniques, including the forecasting of markets and market share, sales volumes and prices, costs and expenses, and multiple other factors. Management considers historical experience and all available information at the time the estimates are made; however, the fair value that is ultimately realized upon the divestiture of a business may differ from the estimated fair value reflected in the Consolidated Financial Statements. Depreciation and amortization expense is not recorded on assets of a business to be divested once they are classified as held for sale. Businesses to be divested are generally classified in the Consolidated Financial Statements as either discontinued operations or held for sale.

For businesses classified as discontinued operations, the balance sheet amounts and results of operations are reclassified from their historical presentation to assets and liabilities of discontinued operations on the Consolidated Balance Sheet and to discontinued operations on the Statement of Consolidated Operations, respectively, for all periods presented. The gains or losses associated with these divested businesses are recorded in discontinued operations on the Statement of Consolidated Operations. The Statement of Consolidated Cash Flows is not required to be reclassified for discontinued operations for any period. Segment information does not include the assets or operating results of businesses classified as discontinued operations for all periods presented. These businesses are expected to be disposed of within one year.

For businesses classified as held for sale that do not qualify for discontinued operations treatment, the balance sheet and cash flow amounts are reclassified from their historical presentation to assets and liabilities of operations held for sale for all periods presented. The results of operations continue to be reported in continuing operations. The gains or losses associated with these divested businesses are recorded in Restructuring and other charges on the Statement of Consolidated Operations. The segment information includes the assets and operating results of businesses classified as held for sale for all periods presented.

Recently Adopted Accounting Guidance. On January 1, 2017, Arconic adopted changes issued by the Financial Accounting Standards Board (“FASB”) to employee share-based payment accounting. Previously, an entity determined for each share-based payment award whether the difference between the deduction for tax purposes and the compensation cost recognized for financial reporting purposes resulted in either an excess tax benefit or a tax deficiency. Excess tax benefits were recognized in additional paid-in capital; tax deficiencies were recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. Excess tax benefits were not recognized until the deduction reduced taxes payable. The changes require all excess tax benefits and tax deficiencies related to share-based payment awards to be recognized as income tax expense or benefit in the Statement of Consolidated Operations. The tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. In addition, the presentation of excess tax benefits related to share-based payment awards in the statement of cash flows changed. Previously, excess tax benefits were separated from other income tax cash flows and classified as a financing activity. The changes require excess tax benefits to be classified along with other income tax cash flows as an operating activity. Also, the changes require cash paid by an employer when directly withholding shares for tax-withholding purposes to be classified as a financing activity. Further, for a share-based award to qualify for equity classification it previously could not be partially settled in cash in-excess of the employer’s minimum statutory withholding requirements. The changes permit equity classification of share-based awards for withholdings up to the maximum statutory tax rates in applicable jurisdictions. The prospective transition method was utilized for excess tax benefits in the Statement of Consolidated Cash Flows. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB eliminating the requirement for an investor to adjust an equity method investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held as a result of an increase in the level of ownership interest or degree of influence. In addition, an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting must recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to derivative instruments designated as hedging instruments. These changes clarify that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the accounting for Intra-Entity transactions, other than inventory. Previously, no immediate tax impact was recognized in the consolidated financial statements as a result of intra-entity transfers of assets. The previous standard precluded an entity from reflecting a tax benefit or expense from an intra-entity transfer between entities that file separate tax returns, whether or not such entities were in different tax jurisdictions, until the asset was sold to a third party or otherwise recovered. The previous standard also prohibited recognition by the buyer of a deferred tax asset for the temporary difference arising from the excess of the buyer’s tax basis over the cost to the seller. The changes require the current and deferred income tax consequences of the intra-entity transfer to be recorded when the transaction occurs. The exception to defer the tax consequences of inventory transactions is maintained. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of goodwill by eliminating step 2 from the goodwill impairment test, which previously required measurement of any goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. An entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit. Arconic applied this new guidance on a prospective basis. See Goodwill policy above for further details.

On January 1, 2017, Arconic adopted changes issued by the FASB which narrow the definition of a business and require an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, which would not constitute the acquisition of a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs. Arconic applied this new guidance on a prospective basis. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of inventory. Previously, an entity was required to measure its inventory at the lower of cost or market, whereby market can be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. The changes required that inventory be measured at the lower of cost and net realizable value, thereby eliminating the use of the other two market methodologies. Net realizable value is defined as the estimated selling prices in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. These changes did not apply to inventories measured using LIFO (last-in, first-out) or the retail inventory method. Arconic applies the net realizable value market option to measure non-LIFO inventories at the lower of cost or market. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

Recently Issued Accounting Guidance. In May 2014, the FASB issued changes to the recognition of revenue from contracts with customers. These changes created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue and, therefore, supersede virtually all existing revenue recognition requirements and guidance. This framework is expected to result in less complex guidance in application while providing a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract(s), (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract(s), and (v) recognize revenue when, or as, the entity satisfies a performance obligation. In August 2015, the FASB deferred the effective date of the new guidance by one year, making these changes effective for Arconic on January 1, 2018.

Arconic will adopt the new guidance using the modified retrospective transition approach, reflecting the cumulative effect of initially applying the new standard to revenue recognition in the first quarter of 2018. The Company had formed a project assessment and adoption team that reviewed contract terms to assess the impact of adopting the new guidance on the Consolidated Financial Statements. While the Company generally recognizes revenue at a point in time upon delivery and transfer of title and risk of loss for most arrangements, based on the contract reviews performed, certain contracts within the Engineered Products and Solutions segment were identified as potentially moving to over time revenue recognition. The Company modified certain contract terms in conjunction with its customers to remain at point-in-time revenue recognition. These modifications will not result in significant changes to revenue, business practices or controls. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements. The Company is in the process of identifying appropriate changes to its business processes and controls, as well as preparing for revisions to accounting policies and expanded disclosures related to revenue recognition in the notes to the Consolidated Financial Statements.

In January 2016, the FASB issued changes to equity investments. These changes require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values using the measurement alternative of cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Also, the impairment assessment of equity investments without readily determinable fair values has been simplified by requiring a qualitative assessment to identify impairment. Also, the new guidance will require changes in fair value of equity securities to be recognized immediately as a component of net income instead of being reported in accumulated other comprehensive loss until the gain (loss) is realized. These changes became effective for Arconic on January 1, 2018 and have been applied on a prospective basis. Arconic elected the measurement alternative for its equity investments that do not have readily determinable fair values. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In February 2016, the FASB issued changes to the accounting and presentation of leases. These changes require lessees to recognize a right of use asset and lease liability on the balance sheet for all leases with terms longer than 12 months. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right of use asset and lease liability. Additionally, when measuring assets and liabilities arising from a lease, optional payments should be included only if the lessee is reasonably certain to exercise an option to extend the lease, exercise a purchase option, or not exercise an option to terminate the lease. These changes become effective for Arconic on January 1, 2019.  Arconic’s current operating lease portfolio is primarily comprised of land and buildings, plant equipment, vehicles, and computer equipment.  A cross-functional implementation team is in process of determining the scope of arrangements that will be subject to this standard as well as assessing the impact to the Company’s systems, processes and internal controls.  Management is evaluating the impact of these changes on the Consolidated Financial Statements, which will require right of use assets and lease liabilities be recorded in the consolidated balance sheet for operating leases. Therefore, an estimate of the impact is not currently determinable.  However, the adoption is not expected to have a material impact on the Statement of Consolidated Operations.  

In June 2016, the FASB added a new impairment model (known as the current expected credit loss (CECL) model) that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses. The CECL model applies to most debt instruments, trade receivables, lease receivables, financial guarantee contracts, and other loan commitments. The CECL model does not have a minimum threshold for recognition of impairment losses and entities will need to measure expected credit losses on assets that have a low risk of loss. These changes become effective for Arconic on January 1, 2020. Management is currently evaluating the potential impact of these changes on the Consolidated Financial Statements.

In August 2016, the FASB issued changes to the classification of certain cash receipts and cash payments within the statement of cash flows. The guidance identifies eight specific cash flow items and the sections where they must be presented within the statement of cash flows. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. As of result of the adoption, Arconic will reclassify cash received related to beneficial interest in previously transferred trade accounts receivables from operating activities to investing activities in the Statement of Consolidated Cash Flows. This reclassification is expected to have a material impact on the Statement of Consolidated Cash Flows, but does not reflect a change in our underlying business or activities. Additionally, Arconic will reclassify cash paid for debt prepayments including extinguishment costs from operating activities to financing activities in the Statement of Consolidated Cash Flows.

In November 2016, the FASB issued changes to the classification of cash and cash equivalents within the statement of cash flow. Restricted cash and restricted cash equivalents will be included within the cash and cash equivalents line on the cash flow statement and a reconciliation must be prepared to the statement of financial position. Transfers between restricted cash and restricted cash equivalents and cash and cash equivalents will no longer be presented as cash flow activities in the statement of cash flows and for material balances of restricted cash and restricted cash equivalents an entity must disclose information regarding the nature of the restrictions. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. Management has determined that the adoption of this guidance will not have a material impact on the Statement of Consolidated Cash Flows.

In March 2017, the FASB issued changes to shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. These changes become effective for Arconic on January 1, 2019 and early adoption is permitted. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In March 2017, the FASB issued changes to the presentation of net periodic pension cost and net periodic postretirement benefit cost. The new guidance requires registrants to present the service cost component of net periodic benefit cost in the same income statement line item or items as other employee compensation costs arising from services rendered during the period. Also, only the service cost component will be eligible for asset capitalization. Registrants will present the other components of net periodic benefit cost separately from the service cost component; and, the line item or items used in the income statement to present the other components of net periodic benefit cost must be disclosed. These changes became effective for Arconic on January 1, 2018 and will be adopted retrospectively for the presentation of the service cost component and the other components of net periodic benefit cost in the income statement, and prospectively for the asset capitalization of the service cost component of net periodic benefit cost. The Company currently records non-service related net periodic pension cost and net periodic postretirement benefit cost within Cost of goods sold, Selling, general, administrative and other expenses and Research and development expenses and upon the adoption of this standard will be recorded separately from service cost in the Other income, net line item in the Statement of Consolidated Operations. The impact of the retrospective adoption of this guidance will be an increase to consolidated Operating income of approximately $154 and $135 while there will be no impact to consolidated Net loss for the years ended December 31, 2017 and 2016, respectively. The prospective adoption of the asset capitalization of only the service cost component will have an impact of approximately $20 in the first quarter of 2018 Statement of Consolidated Operations.

In May 2017, the FASB issued clarification to guidance on the modification accounting criteria for share-based payment awards. The new guidance requires registrants to apply modification accounting unless three specific criteria are met. The three criteria are 1) the fair value of the award is the same before and after the modification, 2) the vesting conditions are the same before and after the modification and 3) the classification as a debt or equity award is the same before and after the modification. These changes became effective for Arconic on January 1, 2018 and are to be applied prospectively to new awards granted after adoption. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In August 2017, the FASB issued guidance that will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. These changes become effective for Arconic on January 1, 2019. For cash flow and net investment hedges existing at the date of adoption, Arconic will apply a cumulative-effect adjustment related to eliminating the separate measurement of ineffectiveness to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the beginning of the fiscal year in which the amendment is adopted. The amended presentation and disclosure guidance is required only prospectively. Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

In February 2018, the FASB issued guidance that allows a reclassification from Accumulated other comprehensive loss to Accumulated deficit for stranded tax effects resulting from the Tax Cuts and Jobs Act enacted on December 22, 2017. These changes become effective for Arconic on January 1, 2019.  Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

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Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

The following table details the activity of the four components that comprise Accumulated other comprehensive loss for both Arconic’s shareholders and noncontrolling interests:

	Arconic									Noncontrolling Interests
	2017			2016			2015			2017			2016			2015
Pension and other postretirement benefits (U)
Balance at beginning of period	$	(2,010	)	$	(3,611	)	$	(3,601	)	$	—		$	(56	)	$	(64	)
Other comprehensive (loss) income:
Unrecognized net actuarial loss and prior service cost/benefit	(466		)	(1,112		)	(478		)	—			(9		)	5
Tax benefit (expense)	102			380			170			—			3			(1		)
Total Other comprehensive (loss) income before reclassifications, net of tax	(364		)	(732		)	(308		)	—			(6		)	4
Amortization of net actuarial loss and prior service cost/benefit(1)	222			389			458			—			4			6
Tax expense(2)	(78		)	(136		)	(160		)	—			(1		)	(2		)
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	144			253			298			—			3			4
Total Other comprehensive (loss) income	(220		)	(479		)	(10		)	—			(3		)	8
Transfer to Alcoa Corporation	—			2,080			—			—			59			—
Balance at end of period	$	(2,230	)	$	(2,010	)	$	(3,611	)	$	—		$	—		$	(56	)
Foreign currency translation
Balance at beginning of period	$	(689	)	$	(2,412	)	$	(846	)	$	(2	)	$	(780	)	$	(351	)
Other comprehensive income (loss)(3)	252			268			(1,566		)	2			182			(429		)
Transfer to Alcoa Corporation	—			1,455			—			—			596			—
Balance at end of period	$	(437	)	$	(689	)	$	(2,412	)	$	—		$	(2	)	$	(780	)
Available-for-sale securities
Balance at beginning of period	$	132		$	(5	)	$	—		$	—		$	—		$	—
Other comprehensive (loss) income (4)	(134		)	137			(5		)	—			—			—
Transfer to Alcoa Corporation	—			—			—			—			—			—
Balance at end of period	$	(2	)	$	132		$	(5	)	$	—		$	—		$	—
Cash flow hedges
Balance at beginning of period	$	(1	)	$	597		$	(230	)	—			$	(3	)	$	(2	)
Other comprehensive income (loss):
Net change from periodic revaluations	37			(843		)	1,138			—			36			(1		)
Tax (expense) benefit	(9		)	252			(340		)	—			(10		)	—
Total Other comprehensive income (loss) before reclassifications, net of tax	28			(591		)	798			—			26			(1		)
Net amount reclassified to earnings:
Aluminum contracts(5)	(2		)	1			21			—			—			—
Energy contracts(6)	—			(49		)	6			—			(34		)	—
Foreign exchange contracts(5)	—			—			5			—			—			—
Interest rate contracts(7)	—			9			1			—			5			—
Nickel contracts(6)	(1		)	1			2			—			—			—
Sub-total	(3		)	(38		)	35			—			(29		)	—
Tax benefit (expense)(2)	1			12			(6		)	—			8			—
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	(2		)	(26		)	29			—			(21		)	—
Total Other comprehensive income (loss)	26			(617		)	827			—			5			(1		)
Transfer to Alcoa Corporation	—			19			—			—			(2		)	—
Balance at end of period	$	25		$	(1	)	$	597		$	—		$	—		$	(3	)

⁽¹⁾  These amounts were included in the computation of net periodic benefit cost for pension and other postretirement benefits (see Note T).

⁽²⁾  These amounts were included in Provision for income taxes on the accompanying Statement of Consolidated Operations.

⁽³⁾  In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.

⁽⁴⁾  Realized gains and losses were included in Other income, net on the accompanying Statement of Consolidated Operations.

⁽⁵⁾  These amounts were included in Sales on the accompanying Statement of Consolidated Operations.

⁽⁶⁾  These amounts were included in Cost of goods sold on the accompanying Statement of Consolidated Operations.

⁽⁷⁾  These amounts were included in Interest expense on the accompanying Statement of Consolidated Operations.

⁽⁸⁾  A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings. These amounts were reflected on the accompanying Statement of Consolidated Operations in the line items indicated in footnotes 1 through 7.

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Separation Transaction and Discontinued Operations

12 Months Ended

Dec. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Separation Transaction and Discontinued Operations

Separation Transaction and Discontinued Operations

On November 1, 2016, Arconic completed the Separation Transaction. Alcoa Inc., which was re-named Arconic Inc., continues to own the Global Rolled Products (except for the Warrick, IN rolling operations and the equity interest in the rolling mill at the joint venture in Saudi Arabia), Engineered Products and Solutions, and Transportation and Construction Solutions segments. Alcoa Corporation includes the Alumina and Primary Metals segments and the aforementioned Warrick, IN rolling operations and equity interest in the rolling mill at the joint venture in Saudi Arabia, both of which were formally part of the Global Rolled Products segment.

Arconic completed the Separation Transaction by distribution on November 1, 2016 of 80.1% of the outstanding common stock of Alcoa Corporation to the Company’s shareholders of record (the “Distribution”) as of the close of business on October 20, 2016 (the “Record Date”). Arconic retained 19.9% of the Alcoa Corporation common stock (36,311,767 shares). In the Distribution, each Company shareholder received one share of Alcoa Corporation common stock for every three shares of Arconic common stock held as of the close of business on the Record Date. Shareholders received cash in lieu of fractional shares of Alcoa Corporation common stock. The Company had recorded the retained interest as a cost method investment in Investment in common stock of Alcoa Corporation in the December 2016 Consolidated Balance Sheet. The fair value of Arconic’s retained interest in Alcoa Corporation was $1,020 at December 31, 2016 and was based on the closing stock price of Alcoa Corporation as of December 31, 2016 multiplied by the number of shares of Alcoa Corporation common stock owned by the Company at that date.

In February 2017, Arconic sold 23,353,000 of its shares of Alcoa Corporation common stock at $38.03 per share, which resulted in cash proceeds of $888 which were recorded in Sales of investments within Investing Activities in the accompanying Statement of Consolidated Cash Flows, and a gain of $351 which was recorded in Other income, net in the accompanying Statement of Consolidated Operations. In April and May 2017, the Company acquired a portion of its outstanding notes held by two investment banks (the “Investment Banks”) in exchange for cash and the Company’s remaining 12,958,767 Alcoa Corporation shares (valued at $35.91 per share) (the “Debt-for-Equity Exchange”) (See Note I). A gain of $167 on the Debt-for-Equity Exchange was recorded in Other income, net in the accompanying Statement of Consolidated Operations. As of May 4, 2017, the Company no longer maintained a retained interest in Alcoa Corporation common stock.

On October 31, 2016, Arconic entered into several agreements with Alcoa Corporation that govern the relationship of the parties following the completion of the Separation Transaction. These agreements include the following: Separation and Distribution Agreement, Transition Services Agreement, Tax Matters Agreement, Employee Matters Agreement, Alcoa Corporation to Arconic Inc. Patent, Know-How, and Trade Secret License Agreement, Arconic Inc. to Alcoa Corporation Patent, Know-How, and Trade Secret License Agreement, Alcoa Corporation to Arconic Inc. Trademark License Agreement, Toll Processing and Services Agreement (the “Toll Processing Agreement”), Master Agreement for the Supply of Primary Aluminum, Massena Lease and Operations Agreement, Fusina Lease and Operations Agreement, and Stockholder and Registration Rights Agreement.

Effective November 1, 2016, Arconic entered into a Toll Processing Agreement with Alcoa Corporation for the tolling of metal for the Warrick, IN rolling mill which became a part of Alcoa Corporation upon completion of the Separation Transaction. As part of this arrangement, Arconic provides a toll processing service to Alcoa Corporation to produce can sheet products at its facility in Tennessee through the expected end date of the contract, December 31, 2018. Alcoa Corporation supplies all required raw materials to Arconic and Arconic processes the raw materials into finished can sheet coils ready for shipment to the end customer. Tolling revenues for 2017 and the two-month period ended December 31, 2016 and accounts receivable at December 31, 2017 and December 31, 2016 were not material to the consolidated results of operations and financial position for the years ended December 31, 2017 and December 31, 2016.

As part of the Separation Transaction, Arconic was required to provide maximum potential future payment guarantees for Alcoa Corporation issued on behalf of a third party, guarantees related to two long-term Alcoa Corporation energy supply agreements, guarantees related to certain Alcoa Corporation environmental liabilities and energy supply contracts, letters of credit and surety bonds related to Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016, and letters of credit for certain Alcoa Corporation equipment leases and energy contracts (see Note K).

As part of the Separation Transaction, Arconic had recorded a receivable in the December 2016 Consolidated Balance Sheet for the net after-tax proceeds from Alcoa Corporation’s sale of the Yadkin Hydroelectric Project. The transaction closed and the Company received proceeds of $238 in the first quarter of 2017 and the remaining $5 in the second quarter of 2017. The $243 proceeds were included in Other within Investing Activities in the Statement of Consolidated Cash Flows.

The results of operations of Alcoa Corporation were presented as discontinued operations in the Statement of Consolidated Operations as summarized below:

	Ten months ended October 31,			Year ended  December 31,
	2016			2015
Sales	$	6,752		$	10,121
Cost of goods sold (exclusive of expenses below)	5,655			7,965
Selling, general administrative, and other expenses	164			214
Research and development	28			69
Provision for depreciation, depletion and amortization	593			772
Restructuring and other charges	102			981
Interest expense	28			25
Other (income) expenses, net	(75		)	30
Income from discontinued operations before income taxes	257			65
Provision for income taxes	73			106
Income (loss) from discontinued operations after income taxes	184			(41		)
Less: Net income from discontinued operations attributable to noncontrolling interests	63			124
Net income (loss) from discontinued operations	$	121		$	(165	)

During 2017, 2016 and 2015, Arconic recognized $18 ($12 after-tax), $193 ($158 after-tax) and $24 ($24 after-tax), respectively, in Selling, general administrative, and other expenses on the accompanying Statement of Consolidated Operations for costs related to the Separation Transaction. In addition, Arconic also incurred capital expenditures and debt issuance costs of $110 during 2016 related to the Separation Transaction. None of the aforementioned costs and expenses related to the Separation Transaction were reclassified into discontinued operations.

On November 1, 2016, management evaluated the net assets of Alcoa Corporation for potential impairment and determined that no impairment charge was required.

The cash flows related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows for 2016 and all prior periods presented. The following table presents depreciation, depletion and amortization, restructuring and other charges, and purchases of property, plant and equipment of the discontinued operations related to Alcoa Corporation:

For the year ended December 31,	2016		2015
Depreciation, depletion and amortization	$	593	$	772
Restructuring and other charges	$	102	$	981
Capital expenditures	$	298	$	391

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Restructuring and Other Charges

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Restructuring and Other Charges

Restructuring and Other Charges

Restructuring and other charges for each year in the three-year period ended December 31, 2017 were comprised of the following:

	2017			2016			2015
Asset impairments	$	58		$	80		$	—
Layoff costs	64			70			97
Net loss on divestitures of businesses (F)	57			3			136
Other	(3		)	27			(11		)
Reversals of previously recorded layoff costs	(11		)	(25		)	(8		)
Restructuring and other charges	$	165		$	155		$	214

Layoff costs were recorded based on approved detailed action plans submitted by the operating locations that specified positions to be eliminated, benefits to be paid under existing severance plans, union contracts or statutory requirements, and the expected timetable for completion of the plans.

2017 Actions. In 2017, Arconic recorded Restructuring and other charges of $165 ($143 after-tax), which were comprised of the following components: $69 ($47 after-tax) for layoff costs related to cost reduction initiatives including the separation of approximately 880 employees (400 in the Engineered Products and Solutions segment, 245 in the Global Rolled Products segment, 135 in the Transportation and Construction Solutions segment and 100 in Corporate), a charge of $60 ($60 after-tax) related to the sale of the Fusina, Italy rolling mill; a charge of $41 ($41 after-tax) for the impairment of assets associated with the agreement to sell the Latin America Extrusions business (see Note F); a net benefit of $6 ($4 after-tax), for the reversal of forfeited executive stock compensation of $13, partially offset by a charge of $7 for the related severance; a net charge of $12 ($7 after-tax) for other miscellaneous items; and a favorable benefit of $11 ($8 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, approximately 300 of the 880 employees were separated. The remaining separations for 2017 restructuring programs are expected to be completed by the end of 2018. In 2017, cash payments of $28 were made against layoff reserves related to 2017 restructuring programs.

2016 Actions. In 2016, Arconic recorded Restructuring and other charges of $155 ($114 after-tax), which were comprised of the following components: $57 ($46 after-tax) for costs related to the exit of certain legacy Firth Rixson operations in the U.K.; $37 ($24 after-tax) for exit costs related to the decision to permanently shut down a can sheet facility; $20 ($14 after-tax) for costs related to the closures of five facilities, primarily in the Transportation and Construction Solutions segment and Engineered Products and Solutions segment, including the separation of approximately 280 employees; $53 ($33 after-tax) for other layoff costs, including the separation of approximately 1,315 employees (1,045 in the Engineered Products and Solutions segment, 210 in Corporate, 30 in the Global Rolled Products segment and 30 in the Transportation and Construction Solutions segment); $11 ($8 after-tax) for other miscellaneous items, including $3 ($2 after-tax) for the sale of Remmele Medical; $2 ($1 after-tax) for a pension settlement; and $25 ($12 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

In 2016, management made the decision to exit certain legacy Firth Rixson facilities in the U.K. Costs related to these actions included asset impairments and accelerated depreciation of $51; other exit costs of $4; and $2 for the separation of 60 employees.

Also in 2016, management approved the shutdown and demolition of the can sheet facility in Tennessee upon completion of the Toll Processing Agreement with Alcoa Corporation. Costs related to this action included $21 in asset impairments; $9 in other exit costs; and $7 for the separation of 145 employees. The other exit costs of $9 represent $4 in asset retirement obligations and $3 in environmental remediation, both of which were triggered by the decision to permanently shut down and demolish the can sheet facility in Tennessee, and $2 in other exit costs.

As of December 31, 2017, approximately 1,280 of the 1,700 (previously 1,750) employees were separated. The total number of employees associated with 2016 restructuring programs was updated to reflect employees, who were initially identified for separation, accepting other positions within Arconic and natural attrition. The remaining separations for 2016 restructuring programs are expected to be completed by the end of 2018. In 2017 and 2016, cash payments of $26 and $16 were made against layoff reserves related to 2016 restructuring programs.

2015 Actions. In 2015, Arconic recorded Restructuring and other charges of $214 ($192 after-tax), which were comprised of the following components: a $136 ($134 after-tax) net loss related to the March 2015 divestiture of a rolling mill in Russia and post-closing adjustments associated with the December 2014 divestitures of three rolling mills located in Spain and France; $97 ($70 after-tax) for layoff costs, including the separation of approximately 1,505 employees (590 in the Engineered Products and Solutions segment, 425 in the Transportation and Construction Solutions segment, 400 in Corporate and 90 in the Global Rolled Products segment); an $18 ($13 after-tax) gain on the sale of land related to one of the rolling mills in Australia that was permanently closed in December 2014; a net charge of $7 ($4 after-tax) for other miscellaneous items; and $8 ($3 after-tax) for the reversal of a number of small layoff reserves related to prior periods.

As of December 31, 2017, the separations associated with the 2015 restructuring programs were essentially complete. In 2017, 2016 and 2015, cash payments of $5, $55 and $18, respectively, were made against layoff reserves related to 2015 restructuring programs.

Arconic does not include Restructuring and other charges in the results of its reportable segments. The pre-tax impact of allocating such charges to segment results would have been as follows:

	2017		2016		2015
Engineered Products and Solutions	$	30	$	78	$	46
Global Rolled Products	72		40		121
Transportation and Construction Solutions	52		14		8
Segment total	154		132		175
Corporate	11		23		39
Total restructuring and other charges	$	165	$	155	$	214

Activity and reserve balances for restructuring charges were as follows:

	Layoff costs			Other exit costs			Total
Reserve balances at December 31, 2014	$	48		$	20		$	68
2015:
Cash payments	(45		)	(12		)	(57		)
Restructuring charges	97			7			104
Other*	(16		)	(6		)	(22		)
Reserve balances at December 31, 2015	84			9			93
2016:
Cash payments	(73		)	(13		)	(86		)
Restructuring charges	70			27			97
Other*	(31		)	(14		)	(45		)
Reserve balances at December 31, 2016	50			9			59
2017:
Cash payments	(59		)	(6		)	(65		)
Restructuring charges	64			1			65
Other*	1			(2		)	(1		)
Reserve balances at December 31, 2017	$	56		$	2		$	58

* Other includes reversals of previously recorded restructuring charges and the effects of foreign currency translation. In 2017, Other for layoff costs also includes the reclassification of a stock awards reversal of $13. In 2016, Other for other exit costs also included a reclassification of $8 in asset retirement and $2 in environmental obligations, as these liabilities were included in Arconic’s separate reserves for asset retirement obligations and environmental remediation. Other for other exit costs also included a reclassification of $4 in legal obligations, as these liabilities were included in Arconic’s separate reserves for legal costs. In 2015, Other for other exit costs included a reclassification of $5 for certain obligations included in Arconic’s separate reserves for warranties, lease terminations and tax indemnities.

The remaining reserves are expected to be paid in cash during 2018.

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Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

The following table details the changes in the carrying amount of goodwill:

	Engineered Products and Solutions			Global Rolled Products			Transportation and Construction Solutions			Corporate*		Total
Balances at December 31, 2015
Goodwill	$	4,660		$	201		$	111		$	330	$	5,302
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,660			201			58			330		5,249
Acquisitions and Divestitures (F)	47			—			—			—		47
Translation and other	(128		)	(20		)	(1		)	1		(148		)
Balances at December 31, 2016
Goodwill	4,579			181			110			331		5,201
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,579			181			57			331		5,148
Impairment (A)	(719		)	—			—			—		(719		)
Translation and other	89			12			3			2		106
Balances at December 31, 2017
Goodwill	4,668			193			113			333		5,307
Accumulated impairment losses	(719		)	—			(53		)	—		(772		)
	$	3,949		$	193		$	60		$	333	$	4,535

* As of December 31, 2017, the amount reflected in Corporate is allocated to Arconic’s three reportable segments ($256 to Engineered Products and Solutions, $59 to Global Rolled Products and $18 to Transportation and Construction Solutions) for purposes of impairment testing (see Goodwill policy in Note A). This goodwill is reflected in Corporate for segment reporting purposes because it is not included in management’s assessment of performance by the three reportable segments.

In 2017, Arconic recognized an impairment of goodwill in the amount of $719 related to the annual impairment review of the AFE reporting unit which is included in the Engineered Products and Solutions segment. In 2015, Arconic recognized an impairment of goodwill in the amount of $25 related to the annual impairment review of the soft alloy extrusion business reporting unit which is included in the Transportation and Construction Solutions segment (see Goodwill policy in Note A).

Other intangible assets were as follows:

December 31, 2017	Gross carrying amount		Accumulated amortization
Computer software	$	789	$	(674	)
Patents and licenses	110		(107		)
Other intangibles	953		(116		)
Total amortizable intangible assets	1,852		(897		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,884	$	(897	)

December 31, 2016	Gross carrying amount		Accumulated amortization
Computer software	$	755	$	(623	)
Patents and licenses	110		(102		)
Other intangibles	897		(81		)
Total amortizable intangible assets	1,762		(806		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,794	$	(806	)

Computer software consists primarily of software costs associated with an enterprise business solution (EBS) within Arconic to drive common systems among all businesses.

Amortization expense related to the intangible assets in the tables above for the years ended December 31, 2017, 2016, and 2015 was $71, $65, and $67, respectively, and is expected to be in the range of approximately $60 to $75 annually from 2018 to 2022.

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Acquisitions and Divestitures

12 Months Ended

Dec. 31, 2017

Business Combinations [Abstract]

Acquisitions and Divestitures

Acquisitions and Divestitures

Pro forma results of the Company, assuming all acquisitions described below were made at the beginning of the earliest prior period presented, would not have been materially different from the results reported.

2017 Divestitures. In March 2017, Arconic completed the sale of its Fusina, Italy rolling mill to Slim Aluminium. While owned by Arconic, the operating results and assets and liabilities of the Fusina, Italy rolling mill were included in the Global Rolled Products segment. As part of the transaction, Arconic injected $10 of cash into the business and provided a third-party guarantee with a fair value of $5 related to Slim Aluminium’s environmental remediation. The Company recorded a loss on the sale of $60, which was recorded in Restructuring and other charges (see Note D) on the Statement of Consolidated Operations for 2017. The rolling mill generated third-party sales of approximately $54 and $165 for 2017 and 2016, respectively. At the time of the divestiture, the rolling mill had approximately 312 employees.

In December 2017, Arconic entered into an agreement to sell its Latin America Extrusions business for $10 million in cash, subject to working capital and other adjustments. The Latin America Extrusions business operates primarily in Brazil and is part of the Company’s Transportation and Construction Solutions segment. Following customary regulatory and anti-trust approvals, the ownership of this business is expected to be transferred to a subsidiary of Hydro Extruded Solutions AS in the first half of 2018.  As a result of the transaction, Arconic recognized a charge of $41 million in the fourth quarter of 2017 primarily related to the non-cash impairment of the net book value of the business (See Notes A and D).

2016 Divestitures. In April 2016, Arconic completed the sale of the Remmele Medical business to LISI MEDICAL for $102 in cash ($99 net of transaction costs), which was included in Proceeds from the sale of assets and businesses on the accompanying Statement of Consolidated Cash Flows. This business, which was part of the RTI International Metals Inc. (RTI) acquisition (see below), manufactured precision-machined metal products for customers in the minimally invasive surgical device and implantable device markets. Since this transaction occurred within a year of the completion of the RTI acquisition, no gain was recorded on this transaction as the excess of the proceeds over the carrying value of the net assets of this business was reflected as a purchase price adjustment (decrease to goodwill of $44) to the final allocation of the purchase price related to Arconic’s acquisition of RTI. While owned by Arconic, the operating results and assets and liabilities of this business were included in the Engineered Products and Solutions segment. This business generated sales of approximately $20 from January 1, 2016 through the divestiture date, April 29, 2016, and, at the time of the divestiture, had approximately 330 employees.

2015 Acquisitions. In March 2015, Arconic completed the acquisition of an aerospace structural castings company, TITAL, for $204 (€188) in cash (an additional $1 (€1) was paid in September 2015 to settle working capital in accordance with the purchase agreement). TITAL, a privately held company with approximately 650 employees at the time of the acquisition and based in Germany, produces aluminum and titanium investment casting products for the aerospace and defense markets. The purpose of this acquisition was to capture increasing demand for advanced jet engine components made of titanium, establish titanium-casting capabilities in Europe, and expand existing aluminum casting capacity. The assets, including the associated goodwill, and liabilities of this business were included within Arconic’s Engineered Products and Solutions segment since the date of acquisition. Based on the preliminary allocation of the purchase price, goodwill of $118 was recorded for this transaction. In the first quarter of 2016, the allocation of the purchase price was finalized, based, in part, on the completion of a third-party valuation of certain assets acquired, resulting in a $1 reduction of the initial goodwill amount. None of the $117 in goodwill is deductible for income tax purposes and no other intangible assets were identified.

In July 2015, Arconic completed the acquisition of RTI, a U.S. company that was publicly traded on the New York Stock Exchange under the ticker symbol “RTI.” Arconic purchased all outstanding shares of RTI common stock in a stock-for-stock transaction valued at $870 (based on the $9.96 per share July 23, 2015 closing price of Arconic’s common stock). Each issued and outstanding share of RTI common stock prior to the completion of the transaction was converted into the right to receive 2.8315 shares of Arconic common stock. In total, Arconic issued 29,132,471 shares (87,397,414 shares pre-reverse stock split – see Note O) of its common stock to consummate this transaction, which was not reflected in the accompanying Statement of Consolidated Cash Flows as it represents a noncash financing activity. The exchange ratio was the quotient of a $41 per RTI common share acquisition price and the $14.48 per share March 6, 2015 closing price of Arconic’s common stock. In addition to the transaction price, Arconic also paid $25 ($19 after-tax) in professional fees and costs related to this acquisition. This amount was recorded in Selling, general administrative, and other expenses on the accompanying Statement of Consolidated Operations.

RTI is a global supplier of titanium and specialty metal products and services for the commercial aerospace, defense, energy, and medical device end markets. The purpose of this acquisition was to expand Arconic’s range of titanium offerings and add advanced technologies and materials, primarily related to the aerospace end market. In 2014, RTI generated net sales of $794 and had approximately 2,600 employees. The operating results and assets and liabilities of RTI were included within Arconic’s Engineered Products and Solutions segment since the date of acquisition. Third-party sales and Adjusted EBITDA (Arconic’s primary segment performance measure – see Note N) of RTI from the acquisition date through December 31, 2015 were $309 and $21, respectively. During the third quarter of 2016, the final purchase price allocation was completed.

Arconic recognized goodwill of $298, which represents the earnings growth potential of RTI, Arconic’s ability to expand its titanium capabilities in the aerospace market, and expected synergies from combining the operations of the two companies. This goodwill was allocated to a new Arconic reporting unit associated with the Engineered Products and Solutions segment, ATEP, which consists solely of the acquired RTI business. None of this goodwill is deductible for income tax purposes. Arconic also recorded intangible assets of $37 consisting mainly of customer relationships which are being amortized over a period of 20 years.

As part of this acquisition, Arconic assumed the obligation to repay two tranches of convertible debt; one tranche was due and settled in cash on December 1, 2015 (principal amount of $115) and the other tranche is due on October 15, 2019 (principal amount of $403), unless earlier converted or purchased by Arconic at the holder’s option under specific conditions. Upon conversion of the 2019 convertible notes, holders will receive, at Arconic’s election, cash, shares of common stock (approximately 14,294,000 shares using the December 31, 2017 conversion rate of 35.5119 shares per $1,000 (not in millions) bond or per-share conversion price of $28.1596), or a combination of cash and shares. On the maturity date, each holder of outstanding notes will be entitled to receive $1,000 (not in millions) in cash for each $1,000 (not in millions) bond, together with accrued and unpaid interest. The cash conversion feature requires the convertible notes to be bifurcated into a liability component and an equity component. The fair value of the liability component was determined by calculating the net present value of the cash flows of the convertible notes using the interest rate of a similar instrument without a conversion feature. The fair value of the equity component is the difference between the fair value of the entire instrument on the date of acquisition and the fair value of the liability and is included as Additional capital on the accompanying Consolidated Balance Sheet.

2015 Divestitures. In 2015, Arconic completed the divestiture of an operation in Russia (see below) and had post-closing adjustments, as provided for in the respective purchase agreements, related to a divestiture completed in December 2014. The divestiture and post-closing adjustments combined resulted in net cash paid of $11 and a net loss of $137, which was recorded in Restructuring and other charges (see Note D) on the accompanying Statement of Consolidated Operations.

In March 2015, Arconic completed the sale of a rolling mill located in Belaya Kalitva, Russia to a wholly-owned subsidiary of Stupino Titanium Company. While owned by Arconic, the operating results and assets and liabilities of the rolling mill were included in the Global Rolled Products segment. The rolling mill generated sales of approximately $130 in 2014 and, at the time of divestiture, had approximately 1,870 employees.

2014 Acquisitions. In November 2014, Arconic acquired Firth Rixson. The purchase price included an earn-out agreement that required Arconic to make earn-out payments up to an aggregate maximum amount of $150 through December 31, 2020 upon certain conditions. This earn-out was contingent on the Firth Rixson forging business in Savannah, Georgia achieving certain identified financial targets through December 31, 2020. During the fourth quarter of 2016, management determined that payment of the maximum amount was not probable based on the forecasted financial performance of this location. Therefore, the fair value of this liability was reduced by $56 with a corresponding credit to Other income, net on the accompanying Statement of Consolidated Operations. During the fourth quarter of 2017, management determined that payment of the remaining amount of the contingent liability was not probable based on the forecasted financial performance of this location. Therefore, the fair value of this liability was reduced by $81 to zero at December 31, 2017 with a corresponding credit to Other income, net on the accompanying Statement of Consolidated Operations.

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Inventories

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories

December 31,	2017		2016
Finished goods	$	669	$	625
Work-in-process	1,349		1,144
Purchased raw materials	381		408
Operating supplies	81		76
	$	2,480	$	2,253

At December 31, 2017 and 2016, the total amount of inventories valued on a LIFO basis was $1,208 and $947, respectively. If valued on an average-cost basis, total inventories would have been $481 and $371 higher at December 31, 2017 and 2016, respectively. During 2017 and 2016, reductions in LIFO inventory quantities caused partial liquidations of the lower cost LIFO inventory base. These liquidations resulted in the recognition of immaterial income amounts in 2017, 2016, and 2015.

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Properties, Plants, and Equipment, Net

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Properties, Plants, and Equipment, Net

Properties, Plants, and Equipment, Net

December 31,	2017		2016
Land and land rights	$	140	$	135
Structures:
Engineered Products and Solutions	784		733
Global Rolled Products	1,090		1,061
Transportation and Construction Solutions	268		254
Other	253		248
	2,395		2,296
Machinery and equipment:
Engineered Products and Solutions	3,054		2,728
Global Rolled Products	4,641		4,570
Transportation and Construction Solutions	777		723
Other	358		337
	8,830		8,358
	11,365		10,789
Less: accumulated depreciation and amortization	6,392		6,073
	4,973		4,716
Construction work-in-progress	621		783
	$	5,594	$	5,499

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Debt

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Debt

Debt

Long-Term Debt.

December 31,	2017			2016
6.50% Bonds, due 2018	$	—		$	250
6.75% Notes, due 2018	—			750
5.72% Notes, due 2019	500			750
1.63% Convertible Notes, due 2019*	403			403
6.150% Notes, due 2020	1,000			1,000
5.40% Notes, due 2021	1,250			1,250
5.87% Notes, due 2022	627			627
5.125% Notes, due 2024	1,250			1,250
5.90% Notes, due 2027	625			625
6.75% Bonds, due 2028	300			300
5.95% Notes due 2037	625			625
Iowa Finance Authority Loan, due 2042 (4.75%)	250			250
Other**	(23		)	(32		)
	6,807			8,048
Less: amount due within one year	1			4
	$	6,806		$	8,044

* Amount was assumed in conjunction with the acquisition of RTI (see Note F).

** Other includes various financing arrangements related to subsidiaries, unamortized debt discounts related to the outstanding notes and bonds listed in the table above, an equity option related to the convertible notes due in 2019 (see Note F), adjustments to the carrying value of long-term debt related to an interest swap contract accounted for as a fair value hedge that was unwound during 2017, and unamortized debt issuance costs.

The principal amount of long-term debt maturing in each of the next five years is $1 in 2018, $903 in 2019, $1,000 in 2020, $1,250 in 2021, and $627 in 2022.

Public Debt—In April 2017, the Company announced three separate cash tender offers by the Investment Banks for the purchase of the Company’s 6.50% Bonds due 2018 (the “6.50% Bonds”), 6.75% Notes due 2018 (the “6.75% Notes”), and 5.72% Notes due 2019 (the “5.72% Notes”), up to a maximum purchase amount of $1,000 aggregate principal amount of notes, subject to certain conditions.

The Investment Banks purchased notes totaling $805 aggregate principal amount, including $150 aggregate principal amount of 6.50% Bonds, $405 aggregate principal amount of 6.75% Notes, and $250 aggregate principal amount of $5.72% Notes.

During the second quarter of 2017, the Company agreed to acquire the notes from the Investment Banks for $409 in cash plus its remaining investment in Alcoa Corporation common stock (12,958,767 shares valued at $35.91 per share) for total consideration of $874 including accrued and unpaid interest. The Company recorded a charge of $58 ($27 in cash) primarily for the premium for the early redemption of the notes, a benefit of $8 for the proceeds of a related interest rate swap agreement, and a charge of $2 for legal fees associated with the transaction in Interest expense, and recorded a gain of $167 in Other income, net in the accompanying Statement of Consolidated Operations for the Debt-for-Equity Exchange.

On June 19, 2017, the Company completed the early redemption of its remaining outstanding 6.50% Bonds, with aggregate principal amount of $100, and its remaining outstanding 6.75% Notes, with aggregate principal amount of $345, for $479 in cash including accrued and unpaid interest. As a result of the early redemption of the 6.50% Bonds and 6.75% Notes, the Company recorded a charge of $24 in Interest expense in the accompanying Statement of Consolidated Operations for the premium paid for the early redemption of these notes in excess of their carrying value.

In December 2016, Arconic elected to call for redemption the $750 in outstanding principal of its 5.55% Notes due February 2017 (the “2017 Notes”) under the provisions of the 2017 Notes. The total cash paid to the holders of the called 2017 Notes was $770, which includes $17 in accrued and unpaid interest from the last interest payment date up to, but not including, the settlement date, and a $3 purchase premium. The purchase premium was recorded in Interest expense on the accompanying Statement of Consolidated Operations. This transaction was completed on December 30, 2016.

The Company has the option to redeem certain of its Notes and Bonds in whole or part, at any time at a redemption price equal to the greater of principal amount or the sum of the present values of the remaining scheduled payments, discounted using a defined treasury rate plus a spread, plus in either case accrued and unpaid interest to the redemption date.

Credit Facilities. On July 25, 2014, Arconic entered into a Five-Year Revolving Credit Agreement (“the Credit Agreement”) with a syndicate of lenders and issuers named therein which provides for a senior unsecured revolving credit facility (the “Credit Facility”). The proceeds are to be used to provide working capital or for other general corporate purposes of Arconic. By an Extension Request and Amendment Letter dated as of June 5, 2015, the maturity date of the Credit Facility was extended to July 25, 2020. In September 2016, Arconic entered into an amendment to the Credit Agreement to permit the Separation Transaction and to amend certain terms of the Credit Agreement including the replacement of the existing financial covenant with a leverage ratio and reduction of total commitments available from $4,000 to $3,000. The amendment became effective on the separation date of November 1, 2016. The previous financial covenant, based upon Consolidated Net Worth (as defined in the Credit Agreement) was replaced. Arconic is required to maintain a ratio of Indebtedness (as defined in the Credit Agreement), to Consolidated EBITDA (as defined in the Credit Agreement) of 4.50 to 1.00 for the period of the four fiscal quarters most recently ended, declining to 3.50 to 1.00 on December 31, 2019 and thereafter.

The Credit Agreement includes additional covenants, including, among others, (a) limitations on Arconic’s ability to incur liens securing indebtedness for borrowed money, (b) limitations on Arconic’s ability to consummate a merger, consolidation or sale of all or substantially all of its assets, and (c) limitations on Arconic’s ability to change the nature of its business. As of December 31, 2017, Arconic was in compliance with all such covenants.

The Credit Facility matures on July 25, 2020, unless extended or earlier terminated in accordance with the provisions of the Credit Agreement. Arconic may make one additional one-year extension request during the remaining term of the Credit Facility, subject to the lender consent requirements set forth in the Credit Agreement. Under the provisions of the Credit Agreement, Arconic will pay a fee up to 0.30% (based on Arconic’s long-term debt ratings as of December 31, 2017) of the total commitment per annum to maintain the Credit Facility.

The Credit Facility is unsecured and amounts payable under it will rank pari passu with all other unsecured, unsubordinated indebtedness of Arconic. Borrowings under the Credit Facility may be denominated in U.S. dollars or euros. Loans will bear interest at a base rate or a rate equal to LIBOR, plus, in each case, an applicable margin based on the credit ratings of Arconic’s outstanding senior unsecured long-term debt. The applicable margin on base rate loans and LIBOR loans will be 0.70% and 1.70% per annum, respectively, based on Arconic’s long-term debt ratings as of December 31, 2017. Loans may be prepaid without premium or penalty, subject to customary breakage costs.

The obligation of Arconic to pay amounts outstanding under the Credit Facility may be accelerated upon the occurrence of an “Event of Default” as defined in the Credit Agreement. Such Events of Default include, among others, (a) Arconic’s failure to pay the principal of, or interest on, borrowings under the Credit Facility, (b) any representation or warranty of Arconic in the Credit Agreement proving to be materially false or misleading, (c) Arconic’s breach of any of its covenants contained in the Credit Agreement, and (d) the bankruptcy or insolvency of Arconic.

There were no amounts outstanding at December 31, 2017 and 2016 and no amounts were borrowed during 2017, 2016 or 2015 under the Credit Facility. In addition to the Credit Facility above, Arconic has a number of other credit facilities that provide a combined borrowing capacity of $715 as of December 31, 2017, of which $640 is due to expire in 2018 and $75 is due to expire in 2019. The purpose of any borrowings under these credit arrangements is to provide for working capital requirements and for other general corporate purposes. The covenants contained in all these arrangements are the same as the Credit Agreement (see above).

In 2017, 2016 and 2015, Arconic borrowed and repaid $810, $1,950, and $1,890, respectively, under the respective credit arrangements. The weighted-average interest rate and weighted-average days outstanding of the respective borrowings during 2017, 2016 and 2015 were 2.6%, 1.9%, and 1.6%, respectively, and 46 days, 49 days, and 69 days, respectively.

Short-Term Debt. At December 31, 2017 and 2016, short-term debt was $38 and $40, respectively. These amounts included $33 and $31 at December 31, 2017 and 2016, respectively, related to accounts payable settlement arrangements with certain vendors and third-party intermediaries. These arrangements provide that, at the vendor’s request, the third-party intermediary advances the amount of the scheduled payment to the vendor, less an appropriate discount, before the scheduled payment date and Arconic makes payment to the third-party intermediary on the date stipulated in accordance with the commercial terms negotiated with its vendors. Arconic records imputed interest related to these arrangements in Interest expense on the accompanying Statement of Consolidated Operations.

Commercial Paper. Arconic had no outstanding commercial paper at December 31, 2017 and 2016. In 2017 and 2016, the average outstanding commercial paper was $67 and $127, respectively. Commercial paper matures at various times within one year and had an annual weighted average interest rate of 1.6%, 1.1%, and 0.6% during 2017, 2016, and 2015, respectively.

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Other Noncurrent Liabilities and Deferred Credits

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Other Noncurrent Liabilities and Deferred Credits

Other Noncurrent Liabilities and Deferred Credits

December 31,	2017		2016
Environmental remediation (L)	$	253	$	260
Income taxes (Q)	162		154
Accrued compensation and retirement costs	218		216
Contingent payment related to an acquisition (F)	—		78
Other	126		162
	$	759	$	870

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Contingencies and Commitments

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Contingencies and Commitments

Contingencies and Commitments

Contingencies

Environmental Matters. Arconic participates in environmental assessments and cleanups at more than 100 locations. These include owned or operating facilities and adjoining properties, previously owned or operating facilities and adjoining properties, and waste sites, including Superfund (Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) sites.

A liability is recorded for environmental remediation when a cleanup program becomes probable and the costs can be reasonably estimated. As assessments and cleanups proceed, the liability is adjusted based on progress made in determining the extent of remedial actions and related costs. The liability can change substantially due to factors such as the nature and extent of contamination, changes in remedial requirements, and technological changes, among others.

Arconic’s remediation reserve balance was $294 at December 31, 2017 and $308 at December 31, 2016 (of which $41 and $48, respectively, was classified as a current liability), and reflects the most probable costs to remediate identified environmental conditions for which costs can be reasonably estimated. In 2017, the remediation reserve increased by $5 due to a net charge associated with a number of sites and was recorded in Costs of goods sold on the accompanying Statement of Consolidated Operations. The change in the reserve also reflects an increase of $8 due to a reclassification of amounts included in other reserves within Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet, and a decrease of $1 due to the effects of foreign currency translation. Payments related to remediation expenses applied against the reserve were $26 in 2017 and include expenditures currently mandated, as well as those not required by any regulatory authority or third party.

Included in annual operating expenses are the recurring costs of managing hazardous substances and environmental programs. These costs are estimated to be approximately 1% or less of cost of goods sold.

The following discussion provides details regarding the current status of the most significant remediation reserve related to a current Arconic site.

Massena West, NY—Arconic has an ongoing remediation project related to the Grasse River, which is adjacent to Arconic’s Massena plant site. Many years ago, it was determined that sediments and fish in the river contain varying levels of polychlorinated biphenyls (PCBs). The project, which was selected by the U.S. Environmental Protection Agency (EPA) in a Record of Decision issued in April 2013, is aimed at capping PCB contaminated sediments with concentration in excess of one part per million in the main channel of the river and dredging PCB contaminated sediments in the near-shore areas where total PCBs exceed one part per million. At December 31, 2017 and December 31, 2016, the reserve balance associated with this matter was $215 and $228, respectively. Arconic is in the planning and design phase of the project, which phase is now expected to be completed in 2018. Originally, the design was scheduled to be completed and approved by the EPA in 2017, but in the third quarter of 2017, the New York State Department of Environmental Conservation (DEC) sent a letter to EPA requesting revisions to the draft design. That caused EPA to delay their review and comment on the draft design.  EPA has now responded to the DEC letter and while issues remain, Arconic is now able to recommence work on the final design.  Following submittal of the final design and EPA approval, the actual remediation fieldwork is expected to commence and take approximately four years. The majority of the project funding is expected to be incurred between 2018 and 2022.

Tax. Pursuant to the Tax Matters Agreement (see Note C), dated as of October 31, 2016, entered into between the Company and Alcoa Corporation in connection with the Separation, the Company shares responsibility with Alcoa Corporation for, and Alcoa Corporation has agreed to partially indemnify the Company with respect to the following matter.

As previously reported, in September 2010, following a corporate income tax audit covering the 2003 through 2005 tax years, an assessment was received as a result of Spain’s tax authorities disallowing certain interest deductions claimed by a Spanish consolidated tax group owned by the Company. An appeal of this assessment in Spain’s Central Tax Administrative Court by the Company was denied in October 2013. In December 2013, the Company filed an appeal of the assessment in Spain’s National Court.

On January 16, 2017, Spain’s National Court issued a decision in favor of the Company related to the assessment received in September 2010. The Spanish Tax Administration did not file an appeal within the applicable period. Based on this decision and recent confirming correspondence from the Spanish Tax Administration, the matter is now closed. The Company will not be responsible for any assessment related to the 2003 through 2005 tax years.

Additionally, following a corporate income tax audit of the same Spanish tax group for the 2006 through 2009 tax years, Spain’s tax authorities issued an assessment in July 2013 similarly disallowing certain interest deductions. In August 2013, the Company filed an appeal of this second assessment in Spain’s Central Tax Administrative Court, which was denied in January 2015. The Company filed an appeal of this second assessment in Spain’s National Court in March 2015. Spain’s National Court has not yet rendered a decision related to the assessment received in July 2013. The assessment for the 2006 through 2009 tax years is $155 (€130), including interest.

The Company believes it has meritorious arguments to support its tax position and intends to vigorously litigate the assessments through Spain’s court system. However, in the event the Company is unsuccessful, a portion of the assessments may be offset with existing net operating losses available to the Spanish consolidated tax group, which would be shared between the Company and Alcoa Corporation as provided for in the Tax Matters Agreement. Additionally, while the tax years 2010 through 2013 are closed to audit, it is possible that the Company may receive similar assessments for tax years subsequent to 2013. At this time, the Company is unable to reasonably predict an ultimate outcome for this matter.

Reynobond PE. As previously reported, on June 13, 2017, the Grenfell Tower in London, UK caught fire resulting in fatalities, injuries and damage. A French subsidiary of Arconic, Arconic Architectural Products SAS (AAP SAS), supplied a product, Reynobond PE, to its customer, a cladding system fabricator, which used the product as one component of the overall cladding system on Grenfell Tower. The fabricator supplied its portion of the cladding system to the façade installer, who then completed and installed the system under the direction of the general contractor. Neither Arconic nor AAP SAS was involved in the design or installation of the system used at the Grenfell Tower, nor did it have a role in any other aspect of the building’s refurbishment or original design. Regulatory investigations into the overall Grenfell Tower matter are being conducted, including a criminal investigation by the London Metro Police, a Public Inquiry by the British government and a consumer protection inquiry by a French public authority. AAP SAS sought and received core participant status in the Public Inquiry. The Company will no longer sell the PE product for architectural use on buildings.

In August and September 2017, two purported class action complaints were filed against Arconic and certain officers, directors and/or other parties, alleging that, in light of the Grenfell Tower fire, certain Company filings with the Securities and Exchange Commission contained false and misleading disclosures and omissions in violation of the federal securities laws. Those cases remain pending.

While the Company believes that these cases are without merit and intends to challenge them vigorously, there can be no assurances regarding the ultimate resolution of these matters. Given the preliminary nature of these matters and the uncertainty of litigation, the Company cannot reasonably estimate at this time the likelihood of an unfavorable outcome or the possible loss or range of losses in the event of an unfavorable outcome. The Board of Directors has also received letters, purportedly sent on behalf of shareholders, reciting allegations similar to those made in the federal court lawsuits and demanding that the Board authorize the Company to initiate litigation against members of management, the Board and others. The Board of Directors has appointed a Special Litigation Committee to review these shareholder demand letters and is considering the appropriate course of action. In addition, lawsuits are pending in state court in New York and federal court in Pennsylvania, initiated, respectively, by another purported shareholder and by the Company, concerning the shareholder’s claimed right, which the Company contests, to inspect the Company’s books and records related to the Grenfell Tower fire and Reynobond PE.

Other. In addition to the matters discussed above, various other lawsuits, claims, and proceedings have been or may be instituted or asserted against Arconic, including those pertaining to environmental, product liability, safety and health, employment, and tax matters. While the amounts claimed in these other matters may be substantial, the ultimate liability cannot currently be determined because of the considerable uncertainties that exist. Therefore, it is possible that the Company’s liquidity or results of operations in a period could be materially affected by one or more of these other matters. However, based on facts currently available, management believes that the disposition of these other matters that are pending or asserted will not have a material adverse effect, individually or in the aggregate, on the results of operations, financial position or cash flows of the Company.

Commitments

Purchase Obligations. Arconic has entered into purchase commitments for raw materials, energy and other goods and services, which total $861 in 2018, $176 in 2019, $74 in 2020, $13 in 2021, $6 in 2022, and $5 thereafter.

Operating Leases. Certain land and buildings, plant equipment, vehicles, and computer equipment are under operating lease agreements. Total expense for all leases was $113 in 2017, $110 in 2016, and $112 in 2015. Under long-term operating leases, minimum annual rentals are $108 in 2018, $88 in 2019, $62 in 2020, $46 in 2021, $38 in 2022, and $100 thereafter.

Guarantees. At December 31, 2017, Arconic has outstanding bank guarantees related to tax matters, outstanding debt, workers’ compensation, environmental obligations, energy contracts, and customs duties, among others. The total amount committed under these guarantees, which expire at various dates between 2018 and 2026 was $29 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to provide certain guarantees for Alcoa Corporation, which had a combined fair value of $8 and $35 at December 31, 2017 and 2016, respectively, and were included in Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet. Arconic was required to provide payment guarantees for Alcoa Corporation issued on behalf of a third party, and amounts outstanding under these payment guarantees were $197 and $354 at December 31, 2017 and 2016, respectively. These guarantees expire at various times between 2018 and 2024, and relate to project financing for Alcoa Corporation’s aluminum complex in Saudi Arabia. Furthermore, Arconic was required to provide guarantees related to two long-term supply agreements for energy for Alcoa Corporation facilities in the event of an Alcoa Corporation payment default. In October 2017, Alcoa Corporation announced that it had terminated one of the two agreements, the electricity contract with Luminant Generation Company LLC that was tied to its Rockdale Operations, effective as of October 1, 2017. As a result of the termination of the Rockdale electricity contract, Arconic recorded income of $25 in the fourth quarter of 2017 associated with reversing the fair value of the electricity contract guarantee. For the remaining long-term supply agreement, Arconic is required to provide a guarantee up to an estimated present value amount of approximately $1,297.

Arconic was also required to provide guarantees of $50 related to two Alcoa Corporation energy supply contracts. These guarantees expired in March 2017. Additionally, Arconic was required to provide guarantees of $53 related to certain Alcoa Corporation environmental liabilities. Notification of a change in guarantor to Alcoa Corporation was made to the appropriate environmental agencies and as such, Arconic no longer provides these guarantees.

In December 2016, Arconic entered into a one-year claims purchase agreement with a bank covering claims up to $245 related to the Saudi Arabian joint venture and two long-term energy supply agreements. The majority of the premium was paid by Alcoa Corporation.  The agreement matured in December 2017 and was not renewed in 2018 due to the decline in exposure to guarantee claims including a substantial reduction in the guarantees related to the Saudi Arabian joint venture and also the elimination of the guarantee related to the Rockdale energy contract. The decision to enter into a claims purchase agreement will be made on an annual basis going forward.

Letters of Credit. Arconic has outstanding letters of credit primarily related to workers’ compensation, energy contracts and leasing obligations. The total amount committed under these letters of credit, which automatically renew or expire at various dates, mostly in 2018, was $120 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to retain letters of credit of $62 that had previously been provided related to both Arconic and Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016. Alcoa Corporation workers’ compensation claims and letter of credit fees paid by Arconic are being proportionally billed to and are being fully reimbursed by Alcoa Corporation. Additionally, Arconic was required to provide letters of credit for certain Alcoa Corporation equipment leases and energy contracts and, as a result, Arconic had $103 of outstanding letters of credit relating to these liabilities. The entire $103 of outstanding letters of credit were canceled in 2017 when Alcoa Corporation issued its own letters of credit to cover these obligations.

Surety Bonds. Arconic has outstanding surety bonds primarily related to tax matters, contract performance, workers’ compensation, environmental-related matters, and customs duties. The total amount committed under these bonds, which automatically renew or expire at various dates, mostly in 2018, was $54 at December 31, 2017.

Pursuant to the Separation and Distribution Agreement, Arconic was required to provide surety bonds related to Alcoa Corporation workers’ compensation claims which occurred prior to November 1, 2016 and, as a result, Arconic has $25 in outstanding surety bonds relating to these liabilities. Alcoa Corporation workers’ compensation claims and surety bond fees paid by Arconic are being proportionately billed to and are being fully reimbursed by Alcoa Corporation.

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Other Income, Net

12 Months Ended

Dec. 31, 2017

Other Income and Expenses [Abstract]

Other Income, Net

Other Income, Net

	2017			2016			2015
Equity income	$	—		$	(7	)	$	—
Interest income	(19		)	(16		)	(16		)
Foreign currency (gains) losses, net	(5		)	(4		)	51
Net (gain) loss from asset sales	(513		)	11			(42		)
Net loss (gain) on mark-to-market derivative contracts	—			1			(3		)
Other, net	(103		)	(79		)	(18		)
	$	(640	)	$	(94	)	$	(28	)

In 2017, Net gain from assets sales included a gain on the sale of a portion of Arconic’s investment in Alcoa Corporation common stock of $351 (see Note C) and a gain of $167 on the Debt-for-Equity Exchange (see Note I). In 2017, Other, net included an adjustment of $81 to the contingent earn-out liability related to the 2014 acquisition of Firth Rixson (see Note F) and an adjustment of $25 associated with a separation-related guarantee liability (see Note K). In 2016, Other, net included an adjustment of $56 to the contingent earn-out liability and a post-closing adjustment of $20, both related to the acquisition of Firth Rixson. In 2015, Net gain from asset sales included a gain of $19 related to the sale of land around Arconic’s former Sherwin, TX site and a gain of $19 related to the sale of the remaining equity investment in a China rolling mill.

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Cash Flow Information

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Information [Abstract]

Cash Flow Information

Cash Flow Information

Cash paid for interest and income taxes was as follows:

	2017		2016		2015
Interest, net of amount capitalized	$	508	$	524	$	487
Income taxes, net of amount refunded	$	118	$	324	$	345

The details related to cash paid for acquisitions were as follows:

	2017		2016			2015
Assets acquired	$	—	$	—		$	2,003
Liabilities assumed	—		—			(868		)
Equity issued	—		—			(870		)
Working capital adjustment	—		(10		)	—
Increase in Arconic’s shareholders’ equity	—		—			(60		)
Cash paid	—		(10		)	205
Less: cash acquired	—		—			302
Net cash paid	$	—	$	(10	)	$	(97	)

During 2016, Arconic sold various securities held by its captive insurance company for $130, and an equity interest in a natural gas pipeline of $145 (Alcoa Corporation), both of which were included in Sales of investments on the accompanying Statement of Consolidated Cash Flows.

In 2016, Arconic received $457 in proceeds from the redemption of certain company-owned life insurance policies, sold its Intalco smelter wharf property (Alcoa Corporation) for $120, and sold the Remmele Medical business (see Note F) for $102. These amounts were included in Proceeds from the sale of assets and businesses on the accompanying Statement of Consolidated Cash Flows.

Noncash Financing and Investing Activities. On October 2, 2017, all outstanding 24,975,978 depositary shares (each depositary share representing a 1/10th interest in a share of the mandatory convertible preferred stock) were converted at a rate of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this equity transaction (see Note O).

In the second quarter of 2017, the Company completed the Debt-for-Equity Exchange with the Investment Banks of the remaining portion of Arconic’s retained interest in Alcoa Corporation common stock for a portion of the Company’s outstanding notes held by the Investment Banks for $465 including accrued and unpaid interest (see Note I).

On October 5, 2016, Arconic completed a 1-for-3 Reverse Stock Split (see Note O). The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares. The par value of the common stock remained at $1.00 per share. Accordingly, Common stock and Additional capital in the Company’s Consolidated Balance Sheet at December 31, 2016 reflect a decrease and increase of $877, respectively.

In August 2016, Arconic retired its outstanding treasury stock consisting of approximately 76 million shares (see Note O). As a result, Common stock and Additional capital were decreased by $76 and $2,563, respectively, to reflect the retirement of the treasury shares.

In July 2015, Arconic purchased all outstanding shares of RTI common stock in a stock-for-stock transaction valued at $870 (see Note F). As a result, Arconic issued 29 million shares (87 million shares—pre-Reverse Stock Split—see Note O) of its common stock to consummate this transaction.

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Segment and Geographic Area Information

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Segment and Geographic Area Information

Segment and Geographic Area Information

Arconic is a global leader in lightweight metals engineering and manufacturing. Arconic’s innovative, multi-material products, which include aluminum, titanium, and nickel, are used worldwide in aerospace, automotive, commercial transportation, packaging, building and construction, oil and gas, defense, consumer electronics, and industrial applications. Arconic’s segments are organized by product on a worldwide basis. In the first quarter of 2017, the Company changed its primary measure of segment performance from After-tax operating income (ATOI) to Adjusted earnings before interest, tax, depreciation and amortization (“Adjusted EBITDA”). Segment performance under Arconic’s management reporting system is evaluated based on a number of factors; however, the primary measure of performance in 2017 was Adjusted EBITDA. Arconic’s definition of Adjusted EBITDA is net margin plus an add-back for depreciation and amortization. Net margin is equivalent to Sales minus the following items: Cost of goods sold; Selling, general administrative, and other expenses; Research and development expenses; and Provision for depreciation and amortization. Prior period information has been recast to conform to current year presentation. The Adjusted EBITDA presented may not be comparable to similarly titled measures of other companies.

Items required to reconcile Combined segment adjusted EBITDA to Net loss attributable to Arconic include: the Provision for depreciation and amortization; Impairment of goodwill; Restructuring and other charges; the impact of LIFO inventory accounting; metal price lag (the timing difference created when the average price of metal sold differs from the average cost of the metal when purchased by the respective segment — generally, when the price of metal increases, metal price lag is favorable, and when the price of metal decreases, metal price lag is unfavorable); corporate expense (general administrative and selling expenses of operating the corporate headquarters and other global administrative facilities and corporate research and development expenses); other items, including intersegment profit eliminations; Other income, net; Interest expense; Income tax expense; and the results of discontinued operations.

The accounting policies of the segments are the same as those described in the Summary of Significant Accounting Policies (see Note A). Transactions among segments are established based on negotiation among the parties. Differences between segment totals and Arconic’s consolidated totals for line items not reconciled are in Corporate.

Arconic’s operations consist of three worldwide reportable segments as follows:

Engineered Products and Solutions. This segment produces products that are used mostly in the aerospace (commercial and defense), industrial, commercial transportation, and power generation end markets. Such products include fastening systems (titanium, steel, and nickel superalloys) and seamless rolled rings (mostly nickel superalloys); investment castings (nickel superalloys, titanium, and aluminum), including airfoils and forged jet engine components (e.g., jet engine disks); and extruded, machined and formed aircraft parts (titanium and aluminum), all of which are sold directly to customers and through distributors. More than 75% of the third-party sales in this segment are from the aerospace end market. A small part of this segment also produces various forged, extruded, and machined metal products (titanium, aluminum and steel) for the oil and gas, automotive, and land and sea defense end markets. Seasonal decreases in sales are generally experienced in the third quarter of the year due to the European summer slowdown across all end markets.

Global Rolled Products. This segment produces aluminum sheet and plate for a variety of end markets. This segment includes sheet and plate sold directly to customers and through distributors in the aerospace, automotive, commercial transportation, packaging, building and construction, and industrial products (mainly used in the production of machinery and equipment and consumer durables) end markets. A small portion of this segment also produces aseptic foil for the packaging end market. While the customer base for flat-rolled products is large, a significant amount of sales of sheet and plate is to a relatively small number of customers.

Transportation and Construction Solutions. This segment produces products that are used mostly in the commercial transportation and nonresidential building and construction end markets. Such products include integrated aluminum structural systems, architectural extrusions, and forged aluminum commercial vehicle wheels, which are sold directly to customers and through distributors. A small part of this segment also produces aluminum products for the industrial products end market.

The operating results and assets of Arconic’s reportable segments were as follows:

	Engineered Products and Solutions		Global Rolled Products		Transportation and Construction Solutions		Total
2017
Sales:
Third-party sales	$	5,935	$	4,992	$	1,985	$	12,912
Intersegment sales	—		148		—		148
Total sales	$	5,935	$	5,140	$	1,985	$	13,060
Profit and loss:
Depreciation and amortization	268		205		50		523
Adjusted EBITDA	1,224		599		321		2,144
2016
Sales:
Third-party sales	$	5,728	$	4,864	$	1,802	$	12,394
Intersegment sales	—		118		—		118
Total sales	$	5,728	$	4,982	$	1,802	$	12,512
Profit and loss:
Depreciation and amortization	$	255	$	201	$	48	$	504
Adjusted EBITDA	1,195		577		291		2,063
2015
Sales:
Third-party sales	$	5,342	$	5,253	$	1,882	$	12,477
Intersegment sales	—		125		—		125
Total sales	$	5,342	$	5,378	$	1,882	$	12,602
Profit and loss:
Depreciation and amortization	$	233	$	203	$	43	$	479
Adjusted EBITDA	1,111		512		271		1,894
2017
Assets:
Capital expenditures	$	308	$	178	$	57	$	543
Goodwill	3,949		193		60		4,202
Total assets	10,252		4,179		1,068		15,499
2016
Assets:
Capital expenditures	$	333	$	293	$	63	$	689
Goodwill	4,579		181		57		4,817
Total assets	10,542		3,891		982		15,415

The following tables reconcile certain segment information to consolidated totals:

	2017			2016			2015
Sales:
Total segment sales	$	13,060		$	12,512		$	12,602
Elimination of intersegment sales	(148		)	(118		)	(125		)
Corporate	48			—			(64		)
Consolidated sales	$	12,960		$	12,394		$	12,413

	2017			2016			2015
Combined segment adjusted EBITDA	$	2,144		$	2,063		$	1,894
Unallocated amounts:
Depreciation and amortization	(551		)	(535		)	(508		)
Impairment of goodwill	(719		)	—			(25		)
Restructuring and other charges	(165		)	(155		)	(214		)
Impact of LIFO	(110		)	(18		)	101
Metal price lag	72			27			(175		)
Corporate expense	(274		)	(454		)	(371		)
Other	(71		)	(109		)	(74		)
Operating income	326			819			628
Interest expense	(496		)	(499		)	(473		)
Other income, net	640			94			28
Income from continuing operations before income taxes	470			414			183
Provision for income taxes	(544		)	(1,476		)	(339		)
Discontinued operations	—			121			(165		)
Net income attributable to noncontrolling interest	—			—			(1		)
Net loss attributable to Arconic	$	(74	)	$	(941	)	$	(322	)

December 31,	2017			2016
Assets:
Total segment assets	$	15,499		$	15,415
Unallocated amounts:
Cash and cash equivalents	2,150			1,863
Deferred income taxes	743			1,234
Corporate goodwill	333			331
Corporate fixed assets, net	310			308
LIFO reserve	(481		)	(371		)
Fair value of derivative contracts	91			24
Investment in common stock of Alcoa Corporation	—			1,020
Other	73			214
Consolidated assets	$	18,718		$	20,038

Sales by major product grouping were as follows:

	2017		2016		2015
Sales:
Flat-rolled aluminum	$	4,992	$	4,864	$	5,253
Fastening systems and rings	2,102		2,060		2,168
Investment castings	1,983		1,870		1,812
Other extruded and forged products	1,565		1,495		1,332
Architectural aluminum systems	1,065		1,010		951
Aluminum wheels	805		689		790
Other	448		406		107
	$	12,960	$	12,394	$	12,413

Geographic information for sales was as follows (based upon the country where the point of sale occurred):

	2017		2016		2015
Sales:
United States	$	8,167	$	7,823	$	8,044
France	965		930		802
Hungary	739		619		622
United Kingdom	721		711		698
China	615		582		565
Russia	500		433		455
Germany	309		284		264
Brazil	285		250		297
Canada	261		262		180
Japan	141		145		138
Italy	37		127		139
Other	220		228		209
	$	12,960	$	12,394	$	12,413

Geographic information for long-lived assets was as follows (based upon the physical location of the assets):

December 31,	2017		2016
Long-lived assets:
United States	$	4,005	$	3,966
China	347		336
Russia	276		295
United Kingdom	259		232
Hungary	227		194
France	159		118
Germany	88		64
Canada	63		58
Brazil	62		97
Other	108		139
	$	5,594	$	5,499

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Preferred and Common Stock

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Preferred and Common Stock

Preferred and Common Stock

Preferred Stock. Arconic has two classes of preferred stock: Class A Preferred Stock and Class B Serial Preferred Stock. Class A Preferred Stock has 660,000 shares authorized at a par value of $100 per share with an annual 3.75 cumulative dividend preference per share. There were 546,024 of such shares outstanding at December 31, 2017 and 2016. Class B Serial Preferred Stock has 10,000,000 shares authorized at a par value of $1 per share. There were no shares outstanding at December 31, 2017 and 2,500,000 of such shares outstanding at December 31, 2016 (see below).

In September 2014, Arconic completed a public offering under its shelf registration statement for $1,250 of 25 million depositary shares, each of which represents a 1/10th interest in a share of Arconic’s 5.375% Class B Mandatory Convertible Preferred Stock, Series 1, par value $1 per share, liquidation preference $500 per share (the “Mandatory Convertible Preferred Stock”). The 25 million depositary shares are equivalent to 2.5 million shares of Mandatory Convertible Preferred Stock. Each depositary share entitled the holder, through the depositary, to a proportional fractional interest in the rights and preferences of a share of Mandatory Convertible Preferred Stock, including conversion, dividend, liquidation, and voting rights, subject to terms of the deposit agreement. Arconic received $1,213 in net proceeds from the public offering reflecting an underwriting discount. The net proceeds were used, together with the net proceeds of issued debt, to finance the cash portion of the acquisition of Firth Rixson. The underwriting discount was recorded as a decrease to Additional capital. The Mandatory Convertible Preferred Stock constitutes a series of Arconic’s Class B Serial Preferred Stock, which ranks senior to Arconic’s common stock and junior to Arconic’s Class A Preferred Stock and existing and future indebtedness. Holders of the Mandatory Convertible Preferred Stock generally have no voting rights.

Dividends on the Mandatory Convertible Preferred Stock were cumulative in nature and paid at the rate of $26.8750 per annum per share in 2016 and 2015, which commenced January 1, 2015 (paid on December 30, 2014).

On October 2, 2017, all outstanding 24,975,978 depositary shares were converted at a rate of 1.56996 into 39,211,286 common shares; 24,022 depositary shares were previously tendered for early conversion into 31,420 shares of Arconic common stock. No gain or loss was recognized associated with this equity transaction. Dividends on the Mandatory Convertible Preferred Stock were paid at the rate of $20.1563 per share in 2017.

Common Stock. Pursuant to the authorization provided at a special meeting of Arconic common shareholders held on October 5, 2016, shareholders approved a 1-for-3 reverse stock split of Arconic’s outstanding and authorized shares of common stock (the “Reverse Stock Split”). As a result of the Reverse Stock Split, every three shares of issued and outstanding common stock were combined into one issued and outstanding share of common stock. The Reverse Stock Split reduced the number of shares of common stock outstanding from approximately 1.3 billion shares to approximately 0.4 billion shares. The par value of the common stock remained at $1 per share. Accordingly, Common stock and Additional capital in the accompanying Consolidated Balance Sheet at December 31, 2016 reflected a decrease and increase of $877, respectively. The number of authorized shares of common stock was also decreased from 1.8 billion shares to 0.6 billion shares. The Company’s common stock began trading on a reverse stock split-adjusted basis on the NYSE on October 6, 2016.

In August 2016, Arconic retired its outstanding treasury stock consisting of approximately 25 million shares (76 million shares pre-Reverse Stock Split). As a result, Common stock and Additional capital in the accompanying 2016 Consolidated Balance Sheet were decreased by $76 and $2,563, respectively, to reflect the retirement of the treasury shares. As of December 31, 2017 and 2016, there was no outstanding treasury stock.

At December 31, 2017, 481,416,537 shares were issued and outstanding. Dividends paid in 2017 were $0.24 per annum or $0.06 per quarter and $0.36 per annum or $0.09 per quarter in 2016 and 2015. The current dividend yield as authorized by Arconic’s Board of Directors is $0.24 per annum or $0.06 per quarter.

In July 2015, Arconic issued 29 million shares (87 million shares—pre-Reverse Stock Split) of common stock as consideration paid to acquire RTI (see Note F). Additionally, Arconic assumed the obligation to repay two tranches of convertible debt; one tranche was due and settled in cash on December 1, 2015 (principal amount of $115) and the other tranche is due on October 15, 2019 (principal amount of $403), unless earlier converted or purchased by Arconic at the holder’s option under specific conditions. Upon conversion of the 2019 convertible notes, holders will receive, at Arconic’s election, cash, shares of common stock (approximately 14,294,000 shares using the December 31, 2017 conversion rate of 35.5119 shares per $1,000 (not in millions) bond or per-share conversion price of $28.1596), or a combination of cash and shares. On the maturity date, each holder of outstanding notes will be entitled to receive on such date $1,000 (not in millions) in cash for each $1,000 (not in millions) bond, together with accrued and unpaid interest.

As of December 31, 2017, 47 million shares of common stock were reserved for issuance under Arconic’s stock-based compensation plans. As of December 31, 2017, 43 million shares remain available for issuance. Arconic issues new shares to satisfy the exercise of stock options and the conversion of stock awards.

Share Activity (number of shares)

	Common stock
	Treasury		Outstanding
Balance at end of 2014	87,150,169		1,216,663,661
Issued for stock-based compensation plans	(6,099,066	)	6,099,066
Acquisition of RTI	—		87,397,414
Balance at end of 2015	81,051,103		1,310,160,141
Issued for stock-based compensation plans	(5,219,660	)	5,302,128
Treasury stock retirement	(75,831,443	)	—
Reverse Stock Split	—		(876,942,489	)
Balance at end of 2016	—		438,519,780
Conversion of convertible notes	—		39,242,706
Issued for stock-based compensation plans	—		3,654,051
Balance at end of 2017	—		481,416,537

Stock-based Compensation

Arconic has a stock-based compensation plan under which stock options and restricted stock unit awards are granted in January each year to eligible employees. Most plan participants can choose whether to receive their award in the form of stock options, restricted stock unit awards, or a combination of both. This choice is made before the grant is issued and is irrevocable. Stock options are granted at the closing market price of Arconic’s common stock on the date of grant and vest over a three-year service period (1/3 each year) with a ten-year contractual term. Restricted stock unit awards typically vest over a three-year service period from the date of grant. Certain of these awards also include performance and market conditions. For the majority of performance stock awards issued in 2017, 2016, and 2015, the final number of shares earned will be based on Arconic’s achievement of sales and profitability targets over the respective three-year performance periods. For awards issued in 2017, the award will be earned at the end of the three-year performance period. For awards issued in 2016 and 2015, one-third of the award will be earned each year based on the performance against the pre-established targets for that year. The performance stock awards earned over the three-year period vest at the end of the third year. Additionally, the 2017 awards will be scaled by a total shareholder return (“TSR”) multiplier, which depends upon relative three-year performance against the TSRs of a group of peer companies.

In 2017, 2016 and 2015, Arconic recognized stock-based compensation expense of $54 ($36 after-tax), $76 ($51 after-tax), and $77 ($51 after-tax), respectively. The expense related to restricted stock unit awards in 2017, 2016 and 2015 was approximately 85%, 80% and 80%, respectively. No stock-based compensation expense was capitalized in any of those years. 2017 stock-based compensation expense was reduced by $13 for certain executive pre-vest cancellations which were recorded in Restructuring and other charges within the Statement of Consolidated Operations. At December 31, 2017, there was $43 (pre-tax) of unrecognized compensation expense related to non-vested stock option grants and non-vested restricted stock unit award grants. This expense is expected to be recognized over a weighted average period of 1.6 years. As part of Arconic’s stock-based compensation plan design, individuals who are retirement-eligible have a six-month requisite service period in the year of grant. As a result, a larger portion of expense will be recognized in the first half of each year for these retirement-eligible employees. Of the total pre-tax compensation expense recognized in 2017, 2016 and 2015, $15, $19, and $15, respectively, pertains to the acceleration of expense related to retirement-eligible employees.

Stock-based compensation expense is based on the grant date fair value of the applicable equity grant. For restricted stock unit awards, the fair value was equivalent to the closing market price of Arconic’s common stock on the date of grant. The grant date fair value of the 2017 performance awards containing a market condition was $21.99 and was valued using a Monte Carlo model. A Monte Carlo simulation uses assumptions of stock price behavior to estimate the probability of satisfying market conditions and the resulting fair value of the award. The risk-free interest rate (1.5%) was based on a yield curve of interest rates at the time of the grant based on the remaining performance period. Because of limited historical information due to the Separation Transaction, volatility (38.0%) was estimated using implied volatility and the representative price return approach, which uses price returns of comparable companies to develop a correlation assumption. For stock options, the fair value was estimated on the date of grant using a lattice-pricing model, which generated a result of $6.26, $4.78, and $10.07 per option in 2017, 2016, and 2015, respectively. The lattice-pricing model uses a number of assumptions to estimate the fair value of a stock option, including a risk-free interest rate, dividend yield, volatility, exercise behavior, and contractual life. The following paragraph describes in detail the assumptions used to estimate the fair value of stock options granted in 2017 (the assumptions used to estimate the fair value of stock options granted in 2016 and 2015 were not materially different, except as noted below).

The risk-free interest rate (2.4%) was based on a yield curve of interest rates at the time of the grant based on the contractual life of the option. The dividend yield (1.2%) was based on a one-year average. Volatility (38.1% for 2017, 44.5% for 2016, and 36.5% in 2015) was based on historical volatilities (except 2017 where we used comparable companies) and implied volatilities over the term of the option. Arconic utilized historical option forfeiture data to estimate annual pre- and post-vesting forfeitures (6%). Exercise behavior (59%) was based on a weighted average exercise ratio (exercise patterns for grants issued over the number of years in the contractual option term) of an option’s intrinsic value resulting from historical employee exercise behavior. Based upon the other assumptions used in the determination of the fair value, the life of an option (5.9 years) was an output of the lattice-pricing model. The activity for stock options and stock awards during 2017 was as follows (options and awards in millions):

	Stock options				Stock awards
	Number of options		Weighted average exercise price		Number of awards		Weighted average FMV per award
Outstanding, January 1, 2017	13		$	24.14	8		$	22.26
Granted	2		21.13		3		21.86
Exercised	(2	)	20.65		—		—
Converted	—		—		(2	)	24.95
Expired or forfeited	(2	)	25.99		(2	)	21.26
Performance share adjustment	—		—		—		21.48
Outstanding, December 31, 2017	11		23.94		7		21.49

As of December 31, 2017, the number of stock options outstanding had a weighted average remaining contractual life of 5.3 years and a total intrinsic value of $53. Additionally, 7.4 million of the stock options outstanding were fully vested and exercisable and had a weighted average remaining contractual life of 4.2 years, a weighted average exercise price of $25.90, and a total intrinsic value of $26 as of December 31, 2017. In 2017, 2016 and 2015, the cash received from stock option exercises was $50, $4, and $25 and the total tax benefit realized from these exercises was $4, $0, and $6, respectively. The total intrinsic value of stock options exercised during 2017, 2016 and 2015 was $13, $1, and $19, respectively.

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Earnings Per Share

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Basic earnings per share (EPS) amounts are computed by dividing earnings (loss), after the deduction of preferred stock dividends declared, by the average number of common shares outstanding. Diluted EPS amounts assume the issuance of common stock for all potentially dilutive share equivalents outstanding.

The number of shares and per share amounts for all periods presented below have been updated to reflect the Reverse Stock Split (see Note O). The information used to compute basic and diluted EPS attributable to Arconic common shareholders was as follows (shares in millions):

	2017			2016			2015
Net loss from continuing operations attributable to Arconic	$	(74	)	$	(1,062	)	$	(156	)
Net income from continuing operations attributable to noncontrolling interests	—			—			(1		)
Less: preferred stock dividends declared	(53		)	(69		)	(69		)
Loss from continuing operations available to Arconic common shareholders	(127		)	(1,131		)	(226		)
Income (loss) from discontinued operations after income taxes and noncontrolling interests(1)	—			121			(165		)
Net loss available to Arconic common shareholders—basic	(127		)	(1,010		)	(391		)
Add: interest expense related to convertible notes	—			—			—
Add: dividends related to mandatory convertible preferred stock	—			—			—
Net loss available to Arconic common shareholders—diluted	$	(127	)	$	(1,010	)	$	(391	)
Average shares outstanding—basic	451			438			420
Effect of dilutive securities:
Stock options	—			—			—
Stock and performance awards	—			—			—
Mandatory convertible preferred stock	—			—			—
Convertible notes	—			—			—
Average shares outstanding—diluted	451			438			420

⁽¹⁾  Calculated from the Statement of Consolidated Operations as Income (loss) from discontinued operations after income taxes less Net income from discontinued operations attributable to noncontrolling interests.

In 2017, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 39 million share equivalents related to the mandatory convertible preferred stock, 14 million (weighted average) share equivalents related to convertible notes (acquired from RTI - see Note O), 11 million stock options, and 7 million stock awards were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2017, 30 million, 14 million, 5 million, and 1 million potential shares of common stock related to the mandatory convertible preferred stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding. The mandatory convertible preferred stock converted on October 2, 2017 (see Note O).

In 2016, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 39 million share equivalents related to the mandatory convertible preferred stock, 14 million share equivalents related to convertible notes, 13 million stock options, and 8 million stock awards were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2016, 28 million, 10 million, 4 million, and 1 million potential shares of common stock related to the mandatory convertible preferred stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding.

In 2015, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive as Arconic generated a net loss. As a result, 26 million share equivalents related to mandatory convertible preferred stock, 7 million stock awards, 11 million stock options, and 5 million share equivalents related to convertible notes were not included in the computation of diluted EPS. Had Arconic generated sufficient net income in 2015, 26 million, 5 million, 4 million, and 1 million potential shares of common stock related to the mandatory convertible preferred stock, convertible notes, stock awards, and stock options, respectively, would have been included in diluted average shares outstanding.

Options to purchase 3 million, 10 million, and 9 million shares of common stock at a weighted average exercise price of $33.32, $26.93, and $38.25 per share were outstanding as of December 31, 2017, 2016, and 2015, respectively, but were not included in the computation of diluted EPS because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of Arconic’s common stock.

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Income Taxes

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The components of income from continuing operations before income taxes were as follows:

	2017			2016		2015
United States	$	500		$	84	$	124
Foreign	(30		)	330		59
	$	470		$	414	$	183

The provision for income taxes consisted of the following:

	2017			2016			2015
Current:
Federal*	$	—		$	—		$	—
Foreign	98			133			115
State and local	(2		)	1			(1		)
	96			134			114
Deferred:
Federal*	489			1,208			196
Foreign	37			136			29
State and local	(78		)	(2		)	—
	448			1,342			225
Total	$	544		$	1,476		$	339

*    Includes U.S. taxes related to foreign income

The exercise of employee stock options generated a tax charge of $1 in 2017 and a benefit of $0 and $2 in 2016 and 2015, respectively, representing only the difference between compensation expense recognized for financial reporting and tax purposes. The tax effects related to the exercise of employee stock options in 2017 were recorded to the income statement within the provision for income taxes. Tax effects related to 2016 and 2015 were recorded to equity. Payments either decreased current taxes payable or increased deferred tax assets (net operating losses) in the respective periods.

Arconic has unamortized tax-deductible goodwill of $24 resulting from intercompany stock sales and reorganizations. Arconic recognizes the tax benefits (at a 25% rate) associated with this tax-deductible goodwill as it is being amortized for local income tax purposes rather than in the period in which the transaction is consummated.

A reconciliation of the U.S. federal statutory rate to Arconic’s effective tax rate was as follows (the effective tax rate for all periods was a provision on income):

	2017		2016		2015
U.S. federal statutory rate	35.0	%	35.0	%	35.0	%
Taxes on foreign operations	(7.5	)	(10.2	)	2.5
Federal benefit of state tax	3.1		0.4		0.3
Permanent differences on restructuring and other charges and asset disposals(1)	(167.4	)	(107.8	)	3.6
Non-deductible acquisition costs	0.3		8.4		7.1
Statutory tax rate and law changes(2)	52.5		(15.7	)	(1.0	)
Tax holidays	(3.0	)	(0.8	)	(3.9	)
Tax credits	(0.7	)	(1.2	)	(2.8	)
Changes in valuation allowances	137.9		426.8		145.8
Impairment of goodwill	53.5		—		4.8
Company-owned life insurance/split-dollar net premiums	—		23.0		(3.0	)
Changes in uncertain tax positions	10.1		2.1		(2.2	)
Other	1.9		(3.5	)	(1.0	)
Effective tax rate	115.7	%	356.5	%	185.2	%

⁽¹⁾  Additional losses were reported in Spain's 2017 tax return related to the Separation Transaction which are offset by an increased valuation allowance.

⁽²⁾  On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 ("the 2017 Act”) resulting in significant changes to the Internal Revenue Code (see below). In December 2016, Spain and the United States enacted tax law changes which resulted in the remeasurement of certain deferred tax liabilities recorded by Arconic.

On December 22, 2017, the 2017 Act was signed into law, making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the non-previously taxed post-1986 foreign earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017. Also on December 22, 2017, Staff Accounting Bulletin No. 118 ("SAB 118"), Income Tax Accounting Implications of the Tax Cuts and Jobs Act, was issued by the Securities and Exchange Commission to address the application of U.S. GAAP for financial reporting. SAB 118 permits the use of provisional amounts based on reasonable estimates in the financial statements. SAB 118 also provides that the tax impact may be considered incomplete in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the 2017 Act. Any adjustments to provisional or incomplete amounts should be included in income from continuing operations as an adjustment to tax expense or benefit in the reporting period that the amounts are determined within one year.

As of February 2, 2018, the Company has calculated a reasonable estimate of the impact of the 2017 Act’s tax rate reduction and one-time transition tax in its year end income tax provision in accordance with its understanding of the 2017 Act and guidance available and, as a result, has recorded a $272 tax charge in the fourth quarter of 2017, the period in which the legislation was enacted. We anticipate finalizing our accounting during 2018 in accordance with SAB 118.

U.S. deferred tax assets and liabilities as of the date of enactment of the 2017 Act are based on estimated temporary differences which will be updated and finalized with the filing of the 2017 U.S. income tax return. Changes to the estimated temporary differences will result in changes to the revaluation of the deferred tax assets and liabilities. As such, the impact of the 2017 Act’s tax rate reduction is a provisional amount under SAB 118 which will be updated during 2018.

The impact of the one-time transition tax on the deemed repatriation of non-previously taxed post-1986 foreign earnings and profits of certain U.S.-owned foreign corporations, net of foreign tax credits, is also considered a provisional amount. The Company will continue to analyze the amount of foreign earnings and profits, the associated foreign tax credits, and additional guidance that may be issued during 2018 and will update the estimated deemed repatriation calculation as necessary under SAB 118. The Company has not yet gathered, prepared and analyzed all the necessary information in sufficient detail to determine whether any excess foreign tax credits that may result from the deemed repatriation will be realizable. The need for additional valuation allowance on foreign tax credits that may not be more likely than not to be realized in the future will be reassessed during 2018.

The components of net deferred tax assets and liabilities were as follows:

	2017					2016
December 31,	Deferred tax assets			Deferred tax liabilities		Deferred tax assets			Deferred tax liabilities
Depreciation	$	31		$	693	$	15		$	817
Employee benefits	936			23		1,382			8
Loss provisions	134			14		181			1
Deferred income/expense	19			1,144		20			74
Tax loss carryforwards	3,305			—		1,540			—
Tax credit carryforwards	638			—		652			—
Other	24			33		164			19
	5,087			1,907		3,954			919
Valuation allowance	(2,584		)	—		(1,940		)	—
	$	2,503		$	1,907	$	2,014		$	919

The following table details the expiration periods of the deferred tax assets presented above:

December 31, 2017	Expires within 10 years			Expires within 11-20 years			No expiration*			Other*			Total
Tax loss carryforwards	$	81		$	781		$	2,443		$	—		$	3,305
Tax credit carryforwards	531			97			10			—			638
Other	—			—			84			1,060			1,144
Valuation allowance	(467		)	(646		)	(1,376		)	(95		)	(2,584		)
	$	145		$	232		$	1,161		$	965		$	2,503

* Deferred tax assets with no expiration may still have annual limitations on utilization. Other represents deferred tax assets whose expiration is dependent upon the reversal of the underlying temporary difference. A substantial amount of Other relates to employee benefits that will become deductible for tax purposes over an extended period of time as contributions are made to employee benefit plans and payments are made to retirees.

The total deferred tax asset (net of valuation allowance) is supported by projections of future taxable income exclusive of reversing temporary differences (30%) and taxable temporary differences that reverse within the carryforward period (70%).

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not (greater than 50%) that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

In 2017, Arconic released $98 of certain U.S. state valuation allowances. After weighing all available positive and negative evidence, management determined that the underlying net deferred tax assets were more likely than not realizable based on projected taxable income estimates taking into account expected post-separation apportionment data. Valuation allowances of $750 remain against other net state deferred tax assets expected to expire before utilization. The need for valuation allowances against net state deferred tax assets will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

Arconic also recorded an additional valuation allowance of $675 which offsets additional losses reported on the Spanish tax return filed in 2017 related to the Separation Transaction that are not more likely than not to be realized.  There is no net impact to the provision for income taxes, as the additional valuation allowance fully offsets the current year tax benefit in Spain. 

Arconic’s foreign tax credits in the United States have a 10-year carryforward period with expirations ranging from 2018 to 2027 (as of December 31, 2017). Valuation allowances were initially established in prior years on a portion of the foreign tax credit carryforwards, primarily due to insufficient foreign source income to allow for full utilization of the credits within the expiration period. After consideration of all available evidence including potential tax planning strategies and earnings of foreign subsidiaries projected to be distributable as taxable foreign dividends, incremental valuation allowances of $302 and $134 were recognized in 2016 and 2015, respectively. Foreign tax credits of $57, $128, and $15 expired at the end of 2017, 2016, and 2015, respectively, resulting in a corresponding decrease to the valuation allowance. During 2017, an additional valuation allowance of $23 was recorded for current year excess foreign tax credits, offset by a net $14 reduction for other adjustments. At December 31, 2017, the cumulative amount of the valuation allowance was $379. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances, including the impact of the 2017 Act.

Arconic will continue its analysis of the 2017 Act, including any additional guidance that may be issued. Further analysis could result in changes to assumptions related to the realizability of certain deferred tax assets including, but not limited to, foreign tax credits, alternative minimum tax credits, and state tax loss carryforwards. Provisional estimates of the impact of the 2017 Act on the realizability of certain deferred tax assets have been made based on information and computations that were available, prepared, and analyzed as of February 2, 2018. In accordance with SAB 118, Arconic will reassess the need for valuation allowances on these deferred tax assets as necessary during 2018.

In 2016, Arconic recognized a $1,267 discrete income tax charge for valuation allowances related to the Separation Transaction, including $925 with respect to Alcoa Corporation’s net deferred tax assets in the United States, $302 with respect to Arconic’s foreign tax credits in the United States, $42 with respect to certain deferred tax assets in Luxembourg, and $(2) related to the net impact of other smaller items. After weighing all positive and negative evidence, as described above, management determined that the net deferred tax assets of Alcoa Corporation were not more likely than not to be realized due to lack of historical and projected domestic source taxable income. As such, a valuation allowance was recorded immediately prior to separation.

In addition, Arconic recognized a $42 discrete income tax charge in 2016 for a valuation allowance on the full value of certain net deferred tax assets in Luxembourg. Sources of taxable income which previously supported the net deferred tax asset are no longer available as a result of the Separation Transaction. The need for this valuation allowance will be reassessed on a continuous basis in future periods and, as a result, the allowance may increase or decrease based on changes in facts and circumstances.

In 2016, Arconic also recognized discrete income tax benefits related to the release of valuation allowances on certain net deferred tax assets in Russia and Canada of $19 and $20, respectively. After weighing all available evidence, management determined that it was more likely than not that the net income tax benefits associated with the underlying deferred tax assets would be realizable based on historic cumulative income and projected taxable income.

Arconic also recorded additional valuation allowances in Australia of $93 related to the Separation Transaction, in Spain of $163 related to a tax law change and in Luxembourg of $280 related to the Separation Transaction as well as a tax law change. These valuation allowances fully offset current year changes in deferred tax asset balances of each respective jurisdiction, resulting in no net impact to tax expense. The need for a valuation allowance will be reassessed on a continuous basis in future periods by each jurisdiction and, as a result, the allowances may increase or decrease based on changes in facts and circumstances.

In 2015, Arconic recognized an additional $141 discrete income tax charge for valuation allowances on certain deferred tax assets in Iceland and Suriname. Of this amount, an $85 valuation allowance was established on the full value of the deferred tax assets in Suriname, which were related mostly to employee benefits and tax loss carryforwards. These deferred tax assets have an expiration period ranging from 2016 to 2022 (as of December 31, 2015). The remaining $56 charge relates to a valuation allowance established on a portion of the deferred tax assets recorded in Iceland. These deferred tax assets have an expiration period ranging from 2017 to 2023. After weighing all available positive and negative evidence, as described above, management determined that it was no longer more likely than not that Arconic will realize the tax benefit of either of these deferred tax assets. This was mainly driven by a decline in the outlook of the Primary Metals business, combined with prior year cumulative losses and a short expiration period.

The following table details the changes in the valuation allowance:

December 31,	2017			2016			2015
Balance at beginning of year	$	1,940		$	1,291		$	1,151
Increase to allowance	831			772			180
Release of allowance	(246		)	(209		)	(42		)
Acquisitions and divestitures (F)	(1		)	(1		)	29
Tax apportionment, tax rate and tax law changes	(24		)	106			(15		)
Foreign currency translation	84			(19		)	(12		)
Balance at end of year	$	2,584		$	1,940		$	1,291

As a result of the 2017 Act, the non-previously taxed post-1986 foreign earnings and profits (calculated based on U.S. tax principles) of certain U.S.-owned foreign corporations has been subject to U.S. tax under the one-time transition tax provisions. The cumulative amount of Arconic’s foreign undistributed U.S. GAAP earnings is estimated to be less than the total foreign earnings and profits already subject to U.S. tax as of December 31, 2017. As such, Arconic expects to be able to repatriate these earnings back to the United States without additional income tax consequences other than foreign withholding taxes which will not have a material impact. At this time, management has no plans to distribute such earnings in the foreseeable future. The Company will continue to evaluate whether to repatriate all or a portion of the cumulative undistributed foreign earnings in light of the 2017 Act and consider that conclusion to be incomplete under SAB 118.

The 2017 Act creates a new requirement that certain income earned by foreign subsidiaries, Global Intangible Low Taxed Income (GILTI), must be included in the gross income of the U.S. shareholder. The 2017 Act also established the Base Erosion and Anti-Abuse Tax (BEAT). The Company is continuing to evaluate the impact of these provisions and has not yet completed a reasonable estimate where we do not have the necessary information available, prepared, and/or analyzed (including computations) as it relates to the impact of the GILTI and BEAT provisions. In addition, Arconic is permitted to make an accounting policy election to either treat taxes due on future inclusions in U.S. taxable income related to GILTI as a current period expense when incurred or factor such amounts into the Company’s deferred tax calculation. Arconic has not yet made this policy decision and will update the GILTI and BEAT impact in accordance with SAB 118.

Arconic and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. With a few minor exceptions, Arconic is no longer subject to income tax examinations by tax authorities for years prior to 2006. All U.S. tax years prior to 2017 have been audited by the Internal Revenue Service. Various state and foreign jurisdiction tax authorities are in the process of examining Arconic’s income tax returns for various tax years through 2016.

A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalties) was as follows:

December 31,	2017			2016			2015
Balance at beginning of year	$	28		$	18		$	7
Additions for tax positions of the current year	23			12			—
Additions for tax positions of prior years	27			—			14
Reductions for tax positions of prior years	—			—			(2		)
Settlements with tax authorities	—			(1		)	—
Expiration of the statute of limitations	(5		)	(1		)	(1		)
Foreign currency translation	—			—			—
Balance at end of year	$	73		$	28		$	18

For all periods presented, a portion of the balance at end of year pertains to state tax liabilities, which are presented before any offset for federal tax benefits. The effect of unrecognized tax benefits, if recorded, that would impact the annual effective tax rate for 2017, 2016 and 2015 would be approximately 15%, 6%, and 7%, respectively, of pre-tax book income. Arconic does not anticipate that changes in its unrecognized tax benefits will have a material impact on the Statement of Consolidated Operations during 2018 (see Tax in Note K for a matter for which no reserve has been recognized).

It is Arconic’s policy to recognize interest and penalties related to income taxes as a component of the Provision for income taxes on the accompanying Statement of Consolidated Operations. In 2017, Arconic recognized interest of $1 but did not recognize any interest or penalties in 2016 or 2015. Due to the expiration of the statute of limitations, settlements with tax authorities, and refunded overpayments, Arconic recognized interest income of $2 and $1 in 2017 and 2015, respectively, but did not recognize any interest income in 2016. As of December 31, 2017 and 2016, the amount accrued for the payment of interest and penalties was $2 and $2, respectively.

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Receivables

12 Months Ended

Dec. 31, 2017

Transfers and Servicing [Abstract]

Receivables

Receivables

Sale of Receivables Programs

Arconic has an arrangement with three financial institutions to sell certain customer receivables without recourse on a revolving basis. The sale of such receivables is completed through the use of a bankruptcy remote special purpose entity, which is a consolidated subsidiary of Arconic. This arrangement provides for minimum funding of $200 up to a maximum of $400 for receivables sold. On March 30, 2012, Arconic initially sold $304 of customer receivables in exchange for $50 in cash and $254 of deferred purchase program under this arrangement. Arconic has received additional net cash funding of $300 for receivables sold ($2,358 in draws and $2,058 in repayments) since the program’s inception, including $0 ($600 in draws and $600 in repayments) in 2017 and $100 ($500 in draws and $400 in repayments) in 2016.

As of December 31, 2017 and 2016, the deferred purchase program receivable was $187 and $83, respectively, which was included in Other receivables on the accompanying Consolidated Balance Sheet. The deferred purchase program receivable is reduced as collections of the underlying receivables occur; however, as this is a revolving program, the sale of new receivables will result in an increase in the deferred purchase program receivable. The net change in the deferred purchase program receivable was reflected in the (Increase) decrease in receivables line item on the accompanying Statement of Consolidated Cash Flows. This activity is reflected as an operating cash flow because the related customer receivables are the result of an operating activity with an insignificant, short-term interest rate risk. See Note A for additional information on new accounting guidance that will affect the Company during 2018.

In 2017 and 2016, the gross cash outflows and inflows associated with the deferred purchase program receivable were $5,471 and $5,367, respectively, and $5,340 and $5,406, respectively. The gross amount of receivables sold and total cash collected under this program since its inception was $35,409 and $34,872 respectively. Arconic services the customer receivables for the financial institutions at market rates; therefore, no servicing asset or liability was recorded.

Allowance for Doubtful Accounts

The following table details the changes in the allowance for doubtful accounts related to customer receivables and other receivables:

	Customer receivables									Other receivables
December 31,	2017			2016			2015			2017			2016			2015
Balance at beginning of year	$	13		$	8		$	6		$	32		$	34		$	24
Provision for doubtful accounts	1			7			4			9			6			8
Write off of uncollectible accounts	(5		)	(3		)	(2		)	(1		)	(1		)	2
Recoveries of prior write-offs	—			(1		)	—			(3		)	1			(1		)
Other	(1		)	2			—			(3		)	(8		)	1
Balance at end of year	$	8		$	13		$	8		$	34		$	32		$	34

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Interest Cost Components

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Interest Cost Components

Interest Cost Components

	2017		2016		2015
Amount charged to expense	$	496	$	499	$	473
Amount capitalized	22		32		27
	$	518	$	531	$	500

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Pension and Other Postretirement Benefits

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Pension and Other Postretirement Benefits

Pension and Other Postretirement Benefits

Arconic maintains pension plans covering most U.S. employees and certain employees in foreign locations. Pension benefits generally depend on length of service, job grade, and remuneration. Substantially all benefits are paid through pension trusts that are sufficiently funded to ensure that all plans can pay benefits to retirees as they become due. Most salaried and non-bargaining hourly U.S. employees hired after March 1, 2006 participate in a defined contribution plan instead of a defined benefit plan.

Arconic also maintains health care and life insurance postretirement benefit plans covering eligible U.S. retired employees and certain retirees from foreign locations. Generally, the medical plans are unfunded and pay a percentage of medical expenses, reduced by deductibles and other coverage. Life benefits are generally provided by insurance contracts. Arconic retains the right, subject to existing agreements, to change or eliminate these benefits. All salaried and certain non-bargaining hourly U.S. employees hired after January 1, 2002 and certain bargaining hourly U.S. employees hired after July 1, 2010 are not eligible for postretirement health care benefits. All salaried and certain hourly U.S. employees that retire on or after April 1, 2008 are not eligible for postretirement life insurance benefits.

Effective January 1, 2015, Arconic no longer offers postretirement health care benefits to Medicare-eligible, primarily non-bargaining, U.S. retirees through Company-sponsored plans. Qualifying retirees (hired prior to January 1, 2002), both current and future, may access these benefits in the marketplace by purchasing coverage directly from insurance carriers. 

Effective August 1, 2016, in preparation for the Separation Transaction, certain U.S. pension and postretirement benefit plans were separated, requiring a remeasurement as of that date. Additionally, one pension plan was required to be remeasured as a result of settlement accounting. Together, these remeasurements resulted in an increase of $845 to Arconic’s pension liability and an increase of $551 (net of tax) to the plans’ unrecognized net actuarial loss (included in Accumulated other comprehensive loss).

Effective April 1, 2018, benefit accruals for future service and compensation under all of the Company’s qualified and non-qualified defined benefit pension plans for U.S. salaried and non-bargained hourly employees (the “Pension Plans”) will cease. In connection with this change, effective April 1, 2018, impacted employees will commence receiving an employer contribution of 3% of eligible compensation under the applicable Arconic Retirement Savings Plans, and, for the period from April 1, 2018 through December 31, 2018, an additional transition employer contribution of 3% of eligible compensation.

The funded status of all of Arconic’s pension and other postretirement benefit plans are measured as of December 31 each calendar year.

Obligations and Funded Status

	Pension benefits						Other postretirement benefits
December 31,	2017			2016			2017			2016
Change in benefit obligation
Benefit obligation at beginning of year	$	7,026		$	14,247		$	980		$	2,319
Service cost	90			165			7			13
Interest cost	234			435			30			63
Amendments	1			2			—			—
Actuarial (gains) losses	311			770			1			112
Transfer to Alcoa Corporation	—			(7,577		)	—			(1,340		)
Settlements	—			(82		)	—			—
Benefits paid, net of participants’ contributions	(425		)	(794		)	(98		)	(197		)
Medicare Part D subsidy receipts	—			—			7			9
Foreign currency translation impact	122			(140		)	—			1
Benefit obligation at end of year(1)	$	7,359		$	7,026		$	927		$	980
Change in plan assets(1)
Fair value of plan assets at beginning of year	$	4,666		$	10,928		$	—		$	—
Actual return on plan assets	212			89			—			—
Employer contributions	310			296			—			—
Participants’ contributions	—			16			—			—
Benefits paid	(404		)	(762		)	—			—
Administrative expenses	(33		)	(65		)	—			—
Transfer to Alcoa Corporation	—			(5,610		)	—			—
Settlements	—			(82		)	—			—
Foreign currency translation impact	111			(144		)	—			—
Fair value of plan assets at end of year(1)	$	4,862		$	4,666		$	—		$	—
Funded status*	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Less: Amounts attributed to joint venture partners	—			—			—			—
Net funded status	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in the Consolidated Balance Sheet consist of:
Noncurrent assets	$	89		$	6		$	—		$	—
Current liabilities	(22		)	(21		)	(86		)	(91		)
Noncurrent liabilities	(2,564		)	(2,345		)	(841		)	(889		)
Net amount recognized	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Net actuarial loss	$	3,240		$	2,979		$	146		$	150
Prior service cost (benefit)	10			15			(37		)	(45		)
Total, before tax effect	3,250			2,994			109			105
Less: Amounts attributed to joint venture partners	—			—			—			—
Net amount recognized, before tax effect	$	3,250		$	2,994		$	109		$	105
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss consist of:
Net actuarial loss (gain)	$	481		$	(1,992	)	$	1		$	(224	)
Amortization of accumulated net actuarial loss	(220		)	(380		)	(5		)	(24		)
Prior service (benefit) cost	—			(42		)	—			37
Amortization of prior service (cost) benefit	(5		)	(13		)	8			24
Total, before tax effect	256			(2,427		)	4			(187		)
Less: Amounts attributed to joint venture partners	—			38			—			—
Net amount recognized, before tax effect	$	256		$	(2,389	)	$	4		$	(187	)

⁽¹⁾  At December 31, 2017, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $6,018, $3,544, and $(2,474), respectively. At December 31, 2016, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $5,707, $3,495, and $(2,212), respectively.

Pension Plan Benefit Obligations

	Pension benefits
	2017		2016
The projected benefit obligation and accumulated benefit obligation for all defined benefit pension plans was as follows:
Projected benefit obligation	$	7,359	$	7,026
Accumulated benefit obligation	7,169		6,850
The aggregate projected benefit obligation and fair value of plan assets for pension plans with projected benefit obligations in excess of plan assets was as follows:
Projected benefit obligation	6,600		6,995
Fair value of plan assets	4,016		4,629
The aggregate accumulated benefit obligation and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets was as follows:
Accumulated benefit obligation	6,422		6,104
Fair value of plan assets	3,998		3,894

Components of Net Periodic Benefit Cost

	Pension benefits(1)									Other postretirement benefits(2)
	2017			2016			2015			2017			2016			2015
Service cost	$	90		$	155		$	175		$	7		$	13		$	14
Interest cost	234			431			577			30			63			92
Expected return on plan assets	(332		)	(677		)	(753		)	—			—			—
Recognized net actuarial loss	220			380			468			5			24			17
Amortization of prior service cost (benefit)	5			13			16			(8		)	(24		)	(37		)
Settlements(3)	—			19			16			—			—			—
Curtailments(4)	—			—			9			—			—			(4		)
Special termination benefits(5)	—			2			16			—			—			—
Net periodic benefit cost(6)	$	217		$	323		$	524		$	34		$	76		$	82
Discontinued operations	—			122			248			—			41			43
Net amount recognized in Statement of Consolidated Operations	$	217		$	201		$	276		$	34		$	35		$	39

Note: the footnotes below include components of Net Periodic Benefit Cost related to Alcoa Corporation through the completion of the Separation Transaction.

⁽¹⁾  In 2017, 2016 and 2015, net periodic benefit cost for U.S. pension plans was $206, $261, and $423, respectively.

⁽²⁾  In 2017, 2016 and 2015, net periodic benefit cost for other postretirement benefits reflects a reduction of $11, $22, and $34, respectively, related to the recognition of the federal subsidy awarded under Medicare Part D.

⁽³⁾  In 2016, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts. In 2015, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts.

⁽⁴⁾  In 2015, curtailments were due to elimination of benefits or workforce reductions (see Note D).

⁽⁵⁾  In 2016 and 2015, special termination benefits were due to workforce reductions (see Note D).

⁽⁶⁾  Amounts attributed to joint venture partners are not included.

Amounts Expected to be Recognized in Net Periodic Benefit Cost

	Pension benefits	Other postretirement benefits
	2018	2018
Net actuarial loss recognition	168	9
Prior service cost (benefit) recognition	3	(8	)

Assumptions

Weighted average assumptions used to determine benefit obligations for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

December 31,	2017		2016
Discount rate	3.75	%	4.20	%
Rate of compensation increase	3.50		3.50

The discount rate is determined using a Company-specific yield curve model (above-median) developed with the assistance of an external actuary. The cash flows of the plans’ projected benefit obligations are discounted using a single equivalent rate derived from yields on high quality corporate bonds, which represent a broad diversification of issuers in various sectors, including finance and banking, industrials, transportation, and utilities, among others. The yield curve model parallels the plans’ projected cash flows, which have an average duration of 11 years. The underlying cash flows of the bonds included in the model exceed the cash flows needed to satisfy the Company’s plans’ obligations multiple times.

The rate of compensation increase is based upon actual experience. For 2018, the rate of compensation increase will be 3.5%, which approximates the five-year average.

Weighted average assumptions used to determine net periodic benefit cost for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Discount rate to calculate service cost*	4.20	%	4.29	%	4.00	%
Discount rate to calculate interest cost*	3.60		3.15		4.00
Expected long-term rate of return on plan assets	7.75		7.75		7.75
Rate of compensation increase	3.50		3.50		3.50

* In all periods presented, the respective discount rates were used to determine net periodic benefit cost for most U.S. pension plans for the full annual period. However, the discount rates for a limited number of plans were updated during 2017, 2016, and 2015 to reflect the remeasurement of these plans due to new union labor agreements, settlements, and/or curtailments. The updated discount rates used were not significantly different from the discount rates presented.

In conjunction with the annual measurement of the funded status of Arconic’s pension and other postretirement benefit plans at December 31, 2015, management elected to change the manner in which the interest cost component of net periodic benefit costs is determined in 2016 and beyond. Previously, the interest component was determined by multiplying the single equivalent rate and the aggregate discounted cash flows of the plans’ projected benefit obligations. Under the new methodology, the interest cost component is determined by aggregating the product of the discounted cash flows of the plans’ projected benefit obligations for each year and an individual spot rate (referred to as the “spot rate” approach). This change resulted in a lower interest cost component of net periodic benefit cost under the new methodology compared to the previous methodology in 2017 and 2016 of $34 and $84, respectively, for pension plans and $6 and $14, respectively, for other postretirement benefit plans. Management believes this new methodology, which represents a change in an accounting estimate, is a better measure of the interest cost as each year’s cash flows are specifically linked to the interest rates of bond payments in the same respective year.

The expected long-term rate of return on plan assets is generally applied to a five-year market-related value of plan assets (a fair value at the plan measurement date is used for certain non-U.S. plans). The process used by management to develop this assumption is one that relies on a combination of historical asset return information and forward-looking returns by asset class. As it relates to historical asset return information, management focuses on various historical moving averages when developing this assumption. While consideration is given to recent performance and historical returns, the assumption represents a long-term, prospective return. Management also incorporates expected future returns on current and planned asset allocations using information from various external investment managers and consultants, as well as management’s own judgment.

For 2017, 2016 and 2015, the expected long-term rate of return used by management was based on the prevailing and planned strategic asset allocations, as well as estimates of future returns by asset class. These rates fell within the respective range of the 20-year moving average of actual performance and the expected future return developed by asset class. In 2015, the decrease of 25 basis points in the expected long-term rate of return was due to a decrease in the 20-year moving average of actual performance. For 2018, management anticipates that 7.00% will be the expected long-term rate of return. The decrease of 75 basis points in the expected long-term rate is due to a decrease in the expected return by asset class and the 20-year moving average.

Assumed health care cost trend rates for U.S. other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Health care cost trend rate assumed for next year	5.50	%	5.50	%	5.50	%
Rate to which the cost trend rate gradually declines	4.50	%	4.50	%	4.50	%
Year that the rate reaches the rate at which it is assumed to remain	2021		2020		2019

The assumed health care cost trend rate is used to measure the expected cost of gross eligible charges covered by Arconic’s other postretirement benefit plans. For 2018, a 5.5% trend rate will be used, reflecting management’s best estimate of the change in future health care costs covered by the plans. The plans’ actual annual health care cost trend experience over the past three years has ranged from (2.2%) to 9.0%. Management does not believe this three-year range is indicative of expected increases for future health care costs over the long-term.

Assumed health care cost trend rates have an effect on the amounts reported for the health care plan. A one-percentage point change in these assumed rates would have the following effects:

	1% increase		1% decrease
Effect on other postretirement benefit obligations	$	29	$	(28	)
Effect on total of service and interest cost components	1		(1		)

Plan Assets

Arconic’s pension plans’ investment policy and weighted average asset allocations at December 31, 2017 and 2016, by asset class, were as follows:

		Plan assets at December 31,
Asset class	Policy range	2017		2016
Equities	20–55%	28	%	30	%
Fixed income	25–55%	47		42
Other investments	15–35%	25		28
Total		100	%	100	%

The principal objectives underlying the investment of the pension plans’ assets are to ensure that Arconic can properly fund benefit obligations as they become due under a broad range of potential economic and financial scenarios, maximize the long-term investment return with an acceptable level of risk based on such obligations, and broadly diversify investments across and within various asset classes to protect asset values against adverse movements. Specific objectives for long-term investment strategy include reducing the volatility of pension assets relative to pension liabilities and achieving diversification across the balance of the asset portfolio. The use of derivative instruments is permitted where appropriate and necessary for achieving overall investment policy objectives. The investment strategy has used long duration cash bonds and derivative instruments to offset a portion of the interest rate sensitivity of U.S. pension liabilities. Exposure to broad equity risk has been decreased and diversified through investments in discretionary and systematic macro hedge funds, long/short equity hedge funds, high yield bonds, emerging market debt and global and emerging market equities. Investments are further diversified by strategy, asset class, geography, and sector to enhance returns and mitigate downside risk. A large number of external investment managers are used to gain broad exposure to the financial markets and to mitigate manager-concentration risk.

Investment practices comply with the requirements of the Employee Retirement Income Security Act of 1974 (ERISA) and other applicable laws and regulations.

The following section describes the valuation methodologies used by the trustees to measure the fair value of pension plan assets, including an indication of the level in the fair value hierarchy in which each type of asset is generally classified (see Note U for the definition of fair value and a description of the fair value hierarchy).

Equities. These securities consist of: (i) direct investments in the stock of publicly traded U.S. and non-U.S. companies and are valued based on the closing price reported in an active market on which the individual securities are traded (generally classified in Level 1); (ii) the plans’ share of commingled funds that are invested in the stock of publicly traded companies and are valued at the net asset value of shares held at December 31 (included in Level 1); and (iii) direct investments in long/short equity hedge funds and private equity (limited partnerships and venture capital partnerships) and are valued by investment managers based on the most recent financial information available, which typically represents significant unobservable data.

Fixed income. These securities consist of: (i) U.S. government debt and are generally valued using quoted prices (included in Level 1); (ii) publicly traded U.S. and non-U.S. fixed interest obligations (principally corporate and sovereign bonds and debentures) and are valued through consultation and evaluation with brokers in the institutional market using quoted prices and other observable market data (included in Level 2); (iii) cash and cash equivalents; and (iv) interest rate swaps and are generally valued using industry standard models with market-based observable inputs.

Other investments. These investments include, among others: (i) exchange traded funds, such as gold, and real estate investment trusts and are valued based on the closing price reported in an active market on which the investments are traded (included in Level 1) and (ii) direct investments of discretionary and systematic macro hedge funds and private real estate (includes limited partnerships) and are valued by investment managers based on the most recent financial information available, which typically represents significant unobservable data.

The fair value methods described above may not be indicative of net realizable value or reflective of future fair values. Additionally, while Arconic believes the valuation methods used by the plans’ trustees are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The following table presents the fair value of pension plan assets classified under the appropriate level of the fair value hierarchy or net asset cost:

December 31, 2017	Level 1		Level 2		Net asset value		Total
Equities:
Equity securities	$	379	$	—	$	593	$	972
Long/short equity hedge funds	—		—		230		230
Private equity	—		—		155		155
	$	379	$	—	$	978	$	1,357
Fixed income:
Intermediate and long duration government/credit	$	201	$	981	$	779	$	1,961
Other	164		8		145		317
	$	365	$	989	$	924	$	2,278
Other investments:
Real estate	$	85	$	—	$	172	$	257
Discretionary and systematic macro hedge funds	—		—		583		583
Other	77		7		275		359
	$	162	$	7	$	1,030	$	1,199
Net plan assets*	$	906	$	996	$	2,932	$	4,834

December 31, 2016	Level 1		Level 2		Net Asset Value		Total
Equities
Equity securities	$	393	$	—	$	431	$	824
Long/short equity hedge funds	—		—		406		406
Private equity	—		—		165		165
	$	393	$	—	$	1,002	$	1,395
Fixed income:
Intermediate and long duration government/credit	$	23	$	95	$	655	$	773
Other	1,060		51		74		1,185
	$	1,083	$	146	$	729	$	1,958
Other investments:
Real estate	$	81	$	—	$	185	$	266
Discretionary and systematic macro hedge funds	—		—		784		784
Other	65		—		178		243
	$	146	$	—	$	1,147	$	1,293
Net plan assets**	$	1,622	$	146	$	2,878	$	4,646

* As of December 31, 2017, the total fair value of pension plans’ assets excludes a net receivable of $28, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold but not yet settled plus interest and dividends earned on various investments.

** As of December 31, 2016, the total fair value of pension plans’ assets excludes a net receivable of $20, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold not yet settled plus interest and dividends earned on various investments.

Funding and Cash Flows

It is Arconic’s policy to fund amounts for pension plans sufficient to meet the minimum requirements set forth in applicable country benefits laws and tax laws. Periodically, Arconic contributes additional amounts as deemed appropriate. In 2017 and 2016, cash contributions to Arconic’s pension plans were $310 and $290. The minimum required contribution to pension plans in 2018 is estimated to be $350, of which $320 is for U.S. plans.

During the third quarter of 2016, the Pension Benefit Guaranty Corporation approved management’s plan to separate the former Alcoa Inc. pension plans between Arconic and Alcoa Corporation in connection with the Separation Transaction. The plan stipulates that Arconic will make cash contributions totaling $150 over a period of 30 months to its two largest pension plans. The payments are expected to be made in increments no less than $50 each over the 30-month period, with the first payment due no later than six months after the separation date of November 1, 2016. The first payment of $50 was made on April 18, 2017.

Benefit payments expected to be paid to pension and other postretirement benefit plans’ participants and expected Medicare Part D subsidy receipts are as follows utilizing the current assumptions outlined above:

Year ended December 31,	Pension benefits paid		Gross Other post- retirement benefits		Medicare Part D subsidy receipts		Net Other post- retirement benefits
2018	$	435	$	90	$	5	$	85
2019	440		90		5		85
2020	440		90		5		85
2021	445		90		5		85
2022	450		90		5		85
Thereafter	2,265		335		25		310
	$	4,475	$	785	$	50	$	735

Defined Contribution Plans

Arconic sponsors savings and investment plans in various countries, primarily in the United States. Expenses related to these plans were $89 in 2017, $71 in 2016, and $83 in 2015. In the United States, employees may contribute a portion of their compensation to the plans, and Arconic matches a portion of these contributions in equivalent form of the investments elected by the employee.

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Other Financial Instruments

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Other Financial Instruments

Other Financial Instruments

Fair Value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (i) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (ii) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:

• Level 1—Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

• Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates); and inputs that are derived principally from or corroborated by observable market data by correlation or other means.

• Level 3—Inputs that are both significant to the fair value measurement and unobservable.

The carrying values and fair values of Arconic’s financial instruments were as follows:

	2017				2016
December 31,	Carrying value		Fair value		Carrying value		Fair value
Cash and cash equivalents	$	2,150	$	2,150	$	1,863	$	1,863
Restricted cash	4		4		15		15
Derivatives – current asset	61		61		14		14
Noncurrent receivables	20		20		21		21
Derivatives – noncurrent asset	33		33		10		10
Available-for-sale securities	106		106		102		102
Investment in common stock of Alcoa Corporation	—		—		1,020		1,020
Short-term debt	38		38		40		40
Derivatives – current liability	45		45		5		5
Commercial paper	—		—		—		—
Derivatives – noncurrent liability	14		14		3		3
Contingent payment related to an acquisition	—		—		78		78
Long-term debt, less amount due within one year	6,806		7,443		8,044		8,519

The following methods were used to estimate the fair values of financial instruments:

Cash and cash equivalents, Restricted cash, Short-term debt, and Commercial paper. The carrying amounts approximate fair value because of the short maturity of the instruments. The fair value amounts for Cash and cash equivalents, Restricted cash, and Commercial paper were classified in Level 1, and Short-term debt was classified in Level 2.

Derivatives. The fair value of derivative contracts classified as Level 1 was based on identical unrestricted assets and liabilities. The fair value of derivative contracts classified as Level 2 was based on inputs other than quoted prices that are observable for the asset or liability (e.g. interest rates).

Noncurrent receivables. The fair value of noncurrent receivables was based on anticipated cash flows, which approximates carrying value, and was classified in Level 2 of the fair value hierarchy.

Available-for-sale securities. The fair value of such securities was based on quoted market prices. These financial instruments consist of exchange-traded fixed income securities, which are carried at fair value and were classified in Level 1 of the fair value hierarchy.

Investment in common stock of Alcoa Corporation (see Note C). The fair value was based on the closing stock price of Alcoa Corporation on the New York Stock Exchange at December 31, 2016 multiplied by the number of shares of Alcoa Corporation stock owned by Arconic as of December 31, 2016. This investment was classified in Level 1 of the fair value hierarchy.

Contingent payment related to an acquisition (see Note F). The fair value was based on the net present value of expected future cash flows and was classified in Level 3 of the fair value hierarchy.

Long-term debt, less amount due within one year. The fair value was based on quoted market prices for public debt and on interest rates that are currently available to Arconic for issuance of debt with similar terms and maturities for non-public debt. The fair value amounts for all Long-term debt were classified in Level 2 of the fair value hierarchy.

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Subsequent Events

12 Months Ended

Dec. 31, 2017

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

Management evaluated all activity of Arconic and concluded that no subsequent events have occurred that would require recognition in the Consolidated Financial Statements or disclosure in the Notes to the Consolidated Financial Statements, except as noted below:

In January 2018, the Company announced the freeze of its U.S. defined benefit pension plans for salaried and non-bargained hourly employees, effective April 1, 2018. Benefit accruals for future service and compensation under all of the Company’s qualified and non-qualified defined benefit pension plans for U.S. salaried and non-bargained hourly employees (the “Pension Plans”) will cease. In connection with this change, effective April 1, 2018, impacted employees will commence receiving an employer contribution of 3% of eligible compensation under the Arconic Salaried Retirement Savings Plan, and, for the period from April 1, 2018 through December 31, 2018, an additional transition employer contribution of 3% of eligible compensation.

In January 2018, management announced a change in the organizational structure of the Engineered Products and Solutions segment, from four business units to three business units, with a focus on aligning its internal structure to core markets and customers and reducing cost. As a result of this change, goodwill will be reallocated to the three new reporting units and evaluated for impairment during the first quarter of 2018. The Company does not expect any goodwill impairment as a result of the realignment.

In February 2018, the Company announced that its Board of Directors authorized a share repurchase program of up to $500 of its outstanding common stock and a $500 early debt reduction. Under the share repurchase program, the Company may repurchase shares from time to time, in amounts, at prices, and at such times as the Company deems appropriate. Repurchases will be subject to market conditions, legal requirements and other considerations. Arconic is not obligated to repurchase any specific number of shares or to do so at any particular time, and the share repurchase program may be suspended, modified or terminated at any time without prior notice. For the early debt reduction, Arconic intends to redeem in March 2018 all of its outstanding 5.72% Notes due in 2019.

Beginning in the first quarter of 2018, the Company's primary measure of segment performance will change from Adjusted EBITDA to Operating income, which more closely aligns segment performance with Operating income as presented in the Statement of Consolidated Operations. As part of this change, LIFO and metal price lag will be included in the Operating income of the segments.

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Quarterly Data

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data

Supplemental Financial Information (unaudited)

Quarterly Data

(in millions, except per-share amounts)

	First			Second		Third		Fourth(2)			Year
2017
Sales	$	3,192		$	3,261	$	3,236	$	3,271		$	12,960
Net income (loss) attributable to Arconic	$	322		$	212	$	119	$	(727	)	$	(74	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Net income (loss) per share—basic	$	0.69		$	0.44	$	0.23	$	(1.51	)	$	(0.28	)
Diluted
Net income (loss) per share—diluted	$	0.65		$	0.43	$	0.22	$	(1.51	)	$	(0.28	)
2016
Sales	$	3,055		$	3,234	$	3,138	$	2,967		$	12,394
Net income (loss) attributable to Arconic	$	16		$	135	$	166	$	(1,258	)	$	(941	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.23		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.34	$	(2.91	)	$	(2.31	)
Diluted
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.22		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.33	$	(2.91	)	$	(2.31	)

⁽¹⁾  Per share amounts are calculated independently for each period presented; therefore, the sum of the quarterly per share amounts may not equal the per share amounts for the year.

⁽²⁾  In the fourth quarter of 2017, Arconic recorded an impairment of goodwill related to the forgings and extrusions business of $719 ($719 pre-tax); a provisional charge of $272 associated with the revaluation of U.S. net deferred tax assets due to a decrease in the U.S. corporate tax rate from 35% to 21%, as well as a one-time transition tax on the non-previously taxed earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017; a favorable adjustment to the Firth Rixson earn-out liability of $81 ($81 pre-tax); and a favorable adjustment to a separation-related guarantee liability of $18 ($25 pre-tax). In the fourth quarter of 2016, as a result of the Separation Transaction, Arconic recorded a charge of $1,267 for valuation allowances on certain deferred tax assets.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation. The Consolidated Financial Statements of Arconic Inc. and subsidiaries (“Arconic” or the “Company”) are prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) and require management to make certain judgments, estimates, and assumptions. These may affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. They also may affect the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates upon subsequent resolution of identified matters. Certain prior year amounts have been reclassified to conform to the current year presentation.

The separation of Alcoa Inc. into two standalone, publicly-traded companies, Arconic Inc. (the new name for Alcoa Inc.) and Alcoa Corporation, became effective on November 1, 2016 (the “Separation Transaction”). The financial results of Alcoa Corporation for all periods prior to the Separation Transaction have been retrospectively reflected in the Statement of Consolidated Operations as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented prior to the Separation Transaction. The cash flows and comprehensive income related to Alcoa Corporation have not been segregated and are included in the Statement of Consolidated Cash Flows and Statement of Consolidated Comprehensive (Loss) Income, respectively, for all periods presented. See Note C for additional information related to the Separation Transaction and discontinued operations.

Principles of Consolidation

Principles of Consolidation. The Consolidated Financial Statements include the accounts of Arconic and companies in which Arconic has a controlling interest. Intercompany transactions have been eliminated. Investments in affiliates in which Arconic cannot exercise significant influence are accounted for on the cost method.

Management also evaluates whether an Arconic entity or interest is a variable interest entity and whether Arconic is the primary beneficiary. Consolidation is required if both of these criteria are met. Arconic does not have any variable interest entities requiring consolidation.

Related Party Transactions

Related Party Transactions. Arconic buys products from and provides services to Alcoa Corporation following the separation at negotiated prices between the parties. These transactions were not material to the financial position or results of operations of Arconic for all periods presented. Effective May 2017, upon disposition of the remaining common stock that Arconic held in Alcoa Corporation, they are no longer deemed a related party.

Cash Equivalents

Cash Equivalents. Cash equivalents are highly liquid investments purchased with an original maturity of three months or less.

Inventory Valuation

Inventory Valuation. Inventories are carried at the lower of cost and net realizable value, with cost for approximately half of U.S. inventories determined under the last-in, first-out (LIFO) method. The cost of other inventories is determined under a combination of the first-in, first-out (FIFO) and average-cost methods.

Properties, Plants, and Equipment

Properties, Plants, and Equipment. Properties, plants, and equipment are recorded at cost. Depreciation is recorded principally on the straight-line method at rates based on the estimated useful lives of the assets. The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):

Segment	Structures	Machinery and equipment
Engineered Products and Solutions	29	17
Global Rolled Products	31	21
Transportation and Construction Solutions	27	18

Gains or losses from the sale of assets are generally recorded in Other income, net (see policy below for assets classified as held for sale and discontinued operations). Repairs and maintenance are charged to expense as incurred. Interest related to the construction of qualifying assets is capitalized as part of the construction costs.

Properties, plants, and equipment are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets (asset group) may not be recoverable. Recoverability of assets is determined by comparing the estimated undiscounted net cash flows of the operations related to the assets (asset group) to their carrying amount. An impairment loss would be recognized when the carrying amount of the assets (asset group) exceeds the estimated undiscounted net cash flows. The amount of the impairment loss to be recorded is calculated as the excess of the carrying value of the assets (asset group) over their fair value, with fair value determined using the best information available, which generally is a discounted cash flow (DCF) model. The determination of what constitutes an asset group, the associated estimated undiscounted net cash flows, and the estimated useful lives of assets also require significant judgments.

Goodwill and Other Intangible Assets

Goodwill. Goodwill is not amortized; instead, it is reviewed for impairment annually (in the fourth quarter) or more frequently if indicators of impairment exist or if a decision is made to sell or realign a business. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.

Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. Arconic has eight reporting units, of which four are included in the Engineered Products and Solutions segment, three are included in the Transportation and Construction Solutions segment, and the remaining reporting unit is the Global Rolled Products segment. More than 85% of Arconic’s total goodwill at December 31, 2017 is allocated to two reporting units as follows: Arconic Fastening Systems and Rings (AFSR) ($2,221) and Arconic Power and Propulsion (APP) ($1,686) businesses, both of which are included in the Engineered Products and Solutions segment. These amounts include an allocation of Corporate’s goodwill.

In reviewing goodwill for impairment, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the quantitative impairment test.

Arconic determines annually, based on facts and circumstances, which of its reporting units will be subject to the qualitative assessment. For those reporting units where a qualitative assessment is either not performed or for which the conclusion is that an impairment is more likely than not, a quantitative impairment test will be performed. Arconic’s policy is that a quantitative impairment test be performed for each reporting unit at least once during every three-year period.

Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Additionally, an assessment of the level of impact that a particular factor would have on the estimated fair value is determined using high, medium, and low weighting. Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital (WACC) between the current and prior years for each reporting unit.

During the 2017 annual review of goodwill, management performed the qualitative assessment for one reporting unit, Arconic Wheel and Transportation Products (within the Transportation and Construction Solutions segment). Management concluded that it was not more likely than not that the estimated fair value of the reporting unit was less than its carrying value. As such, no further analysis was required.

Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. Arconic uses a discounted cash flow model (DCF) to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, production costs, tax rates, capital spending, discount rate, and working capital changes. Most of these assumptions vary significantly among the reporting units. Cash flow forecasts are generally based on approved business unit operating plans for the early years and historical relationships in later years. The WACC rate for the individual reporting units is estimated with the assistance of valuation experts. Arconic would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit.

During the 2017 annual review of goodwill, management proceeded directly to the quantitative impairment test for six reporting units as follows: AFSR, APP, Arconic Titanium and Engineered Products (ATEP), and Arconic Forgings and Extrusions (AFE), which are all included in the Engineered Products and Solutions segment, Global Rolled Products, and Building and Construction Systems, which is included in the Transportation and Construction Solutions segment. The estimated fair value for five of the six reporting units exceeded its respective carrying value, resulting in no impairment. However, the estimated fair value of AFE was lower than its carrying value. As such, in the fourth quarter of 2017, Arconic recorded an impairment for the full amount of goodwill in the AFE reporting unit of $719. The decrease in the AFE fair value was primarily due to unfavorable performance that is impacting operating margins and a higher discount rate due to an increase in the risk-free rate of return, while the carrying value increased compared to prior year.

Goodwill impairment tests in 2016 and 2015 indicated that goodwill was not impaired for any of the Company’s reporting units, except for the soft alloy extrusion business in Brazil which is included in the Transportation and Construction Solutions segment. In the fourth quarter of 2015, for the soft alloy extrusion business in Brazil, the estimated fair value as determined by the DCF model was lower than the associated carrying value of its reporting unit’s goodwill. As a result, management determined that the implied fair value of the reporting unit’s goodwill was zero. Arconic recorded a goodwill impairment of $25 in 2015. The impairment of goodwill resulted from headwinds from the downturn in the Brazilian economy and the continued erosion of gross margin despite the execution of cost reduction strategies. As a result of the goodwill impairment, there is no goodwill remaining for the reporting unit.

Other Intangible Assets. Intangible assets with indefinite useful lives are not amortized while intangible assets with finite useful lives are amortized generally on a straight-line basis over the periods benefited. The following table details the weighted-average useful lives of software and other intangible assets by reporting segment (numbers in years):

Revenue Recognition

Revenue Recognition. Arconic recognizes revenues when title, ownership, and risk of loss pass to the customer, all of which occurs upon shipment or delivery of the product and is based on the applicable shipping terms. The shipping terms vary across all businesses and depend on the product, the country of origin, and the type of transportation (truck, train, or vessel).

In certain circumstances, Arconic receives advanced payments from its customers for product to be delivered in future periods. These advanced payments are recorded as deferred revenue until the product is delivered and title and risk of loss have passed to the customer in accordance with the terms of the contract. Deferred revenue is included in Other current liabilities and Other noncurrent liabilities and deferred credits on the accompanying Consolidated Balance Sheet.

Environmental Matters

Environmental Matters. Expenditures for current operations are expensed or capitalized, as appropriate. Expenditures relating to existing conditions caused by past operations, which will not contribute to future revenues, are expensed. Liabilities are recorded when remediation costs are probable and can be reasonably estimated. The liability may include costs such as site investigations, consultant fees, feasibility studies, outside contractors, and monitoring expenses. Estimates are generally not discounted or reduced by potential claims for recovery. Claims for recovery are recognized when probable and as agreements are reached with third parties. The estimates also include costs related to other potentially responsible parties to the extent that Arconic has reason to believe such parties will not fully pay their proportionate share. The liability is continuously reviewed and adjusted to reflect current remediation progress, prospective estimates of required activity, and other factors that may be relevant, including changes in technology or regulations.

Litigation Matters

Litigation Matters. For asserted claims and assessments, liabilities are recorded when an unfavorable outcome of a matter is deemed to be probable and the loss is reasonably estimable. Management determines the likelihood of an unfavorable outcome based on many factors such as the nature of the matter, available defenses and case strategy, progress of the matter, views and opinions of legal counsel and other advisors, applicability and success of appeals processes, and the outcome of similar historical matters, among others. Once an unfavorable outcome is deemed probable, management weighs the probability of estimated losses, and the most reasonable loss estimate is recorded. If an unfavorable outcome of a matter is deemed to be reasonably possible, then the matter is disclosed and no liability is recorded. With respect to unasserted claims or assessments, management must first determine that the probability that an assertion will be made is likely, then, a determination as to the likelihood of an unfavorable outcome and the ability to reasonably estimate the potential loss is made. Legal matters are reviewed on a continuous basis to determine if there has been a change in management’s judgment regarding the likelihood of an unfavorable outcome or the estimate of a potential loss.

Income Taxes

Income Taxes. The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of Arconic’s assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted.

Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and Arconic’s experience with similar operations. Existing favorable contracts and the ability to sell products into established markets are additional positive evidence. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are not long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which no valuation allowance is recorded may not be realized upon changes in facts and circumstances, resulting in a future charge to establish a valuation allowance. Existing valuation allowances are re-examined under the same standards of positive and negative evidence. If it is determined that it is more likely than not that a deferred tax asset will be realized, the appropriate amount of the valuation allowance, if any, is released. Deferred tax assets and liabilities are also re-measured to reflect changes in underlying tax rates due to law changes and the granting and lapse of tax holidays.

Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than not threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitations has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.

Stock-based Compensation

Stock-based Compensation. Arconic recognizes compensation expense for employee equity grants using the non-substantive vesting period approach, in which the expense is recognized ratably over the requisite service period based on the grant date fair value. Forfeitures are accounted for as they occur. The fair value of new stock options is estimated on the date of grant using a lattice-pricing model. The fair value of performance awards containing a market condition is valued using a Monte Carlo valuation model. Determining the fair value at the grant date requires judgment, including estimates for the average risk-free interest rate, dividend yield, volatility, and exercise behavior. These assumptions may differ significantly between grant dates because of changes in the actual results of these inputs that occur over time.

Most plan participants can choose whether to receive their award in the form of stock options, stock awards, or a combination of both. This choice is made before the grant is issued and is irrevocable.

Foreign Currency

Foreign Currency. The local currency is the functional currency for Arconic’s significant operations outside the United States, except for certain operations in Canada and Russia, where the U.S. dollar is used as the functional currency. The determination of the functional currency for Arconic’s operations is made based on the appropriate economic and management indicators.

Acquisitions

Acquisitions. Arconic’s business acquisitions are accounted for using the acquisition method. The purchase price is allocated to the assets acquired and liabilities assumed based on their estimated fair values. Any excess purchase price over the fair value of the net assets acquired is recorded as goodwill. For all acquisitions, operating results are included in the Statement of Consolidated Operations from the date of the acquisition.

Discontinued Operations and Assets Held For Sale

Discontinued Operations and Assets Held For Sale. For those businesses where management has committed to a plan to divest, each business is valued at the lower of its carrying amount or estimated fair value less cost to sell. If the carrying amount of the business exceeds its estimated fair value, an impairment loss is recognized. Fair value is estimated using accepted valuation techniques such as a DCF model, valuations performed by third parties, earnings multiples, or indicative bids, when available. A number of significant estimates and assumptions are involved in the application of these techniques, including the forecasting of markets and market share, sales volumes and prices, costs and expenses, and multiple other factors. Management considers historical experience and all available information at the time the estimates are made; however, the fair value that is ultimately realized upon the divestiture of a business may differ from the estimated fair value reflected in the Consolidated Financial Statements. Depreciation and amortization expense is not recorded on assets of a business to be divested once they are classified as held for sale. Businesses to be divested are generally classified in the Consolidated Financial Statements as either discontinued operations or held for sale.

For businesses classified as discontinued operations, the balance sheet amounts and results of operations are reclassified from their historical presentation to assets and liabilities of discontinued operations on the Consolidated Balance Sheet and to discontinued operations on the Statement of Consolidated Operations, respectively, for all periods presented. The gains or losses associated with these divested businesses are recorded in discontinued operations on the Statement of Consolidated Operations. The Statement of Consolidated Cash Flows is not required to be reclassified for discontinued operations for any period. Segment information does not include the assets or operating results of businesses classified as discontinued operations for all periods presented. These businesses are expected to be disposed of within one year.

For businesses classified as held for sale that do not qualify for discontinued operations treatment, the balance sheet and cash flow amounts are reclassified from their historical presentation to assets and liabilities of operations held for sale for all periods presented. The results of operations continue to be reported in continuing operations. The gains or losses associated with these divested businesses are recorded in Restructuring and other charges on the Statement of Consolidated Operations. The segment information includes the assets and operating results of businesses classified as held for sale for all periods presented.

Recently Adopted and Issued Accounting Guidance

Recently Adopted Accounting Guidance. On January 1, 2017, Arconic adopted changes issued by the Financial Accounting Standards Board (“FASB”) to employee share-based payment accounting. Previously, an entity determined for each share-based payment award whether the difference between the deduction for tax purposes and the compensation cost recognized for financial reporting purposes resulted in either an excess tax benefit or a tax deficiency. Excess tax benefits were recognized in additional paid-in capital; tax deficiencies were recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. Excess tax benefits were not recognized until the deduction reduced taxes payable. The changes require all excess tax benefits and tax deficiencies related to share-based payment awards to be recognized as income tax expense or benefit in the Statement of Consolidated Operations. The tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. An entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. In addition, the presentation of excess tax benefits related to share-based payment awards in the statement of cash flows changed. Previously, excess tax benefits were separated from other income tax cash flows and classified as a financing activity. The changes require excess tax benefits to be classified along with other income tax cash flows as an operating activity. Also, the changes require cash paid by an employer when directly withholding shares for tax-withholding purposes to be classified as a financing activity. Further, for a share-based award to qualify for equity classification it previously could not be partially settled in cash in-excess of the employer’s minimum statutory withholding requirements. The changes permit equity classification of share-based awards for withholdings up to the maximum statutory tax rates in applicable jurisdictions. The prospective transition method was utilized for excess tax benefits in the Statement of Consolidated Cash Flows. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB eliminating the requirement for an investor to adjust an equity method investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held as a result of an increase in the level of ownership interest or degree of influence. In addition, an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting must recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to derivative instruments designated as hedging instruments. These changes clarify that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the accounting for Intra-Entity transactions, other than inventory. Previously, no immediate tax impact was recognized in the consolidated financial statements as a result of intra-entity transfers of assets. The previous standard precluded an entity from reflecting a tax benefit or expense from an intra-entity transfer between entities that file separate tax returns, whether or not such entities were in different tax jurisdictions, until the asset was sold to a third party or otherwise recovered. The previous standard also prohibited recognition by the buyer of a deferred tax asset for the temporary difference arising from the excess of the buyer’s tax basis over the cost to the seller. The changes require the current and deferred income tax consequences of the intra-entity transfer to be recorded when the transaction occurs. The exception to defer the tax consequences of inventory transactions is maintained. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of goodwill by eliminating step 2 from the goodwill impairment test, which previously required measurement of any goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. An entity will perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value without exceeding the total amount of goodwill allocated to that reporting unit. Arconic applied this new guidance on a prospective basis. See Goodwill policy above for further details.

On January 1, 2017, Arconic adopted changes issued by the FASB which narrow the definition of a business and require an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, which would not constitute the acquisition of a business. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs. Arconic applied this new guidance on a prospective basis. Management determined that the adoption of this guidance had no impact on the Consolidated Financial Statements.

On January 1, 2017, Arconic adopted changes issued by the FASB to the subsequent measurement of inventory. Previously, an entity was required to measure its inventory at the lower of cost or market, whereby market can be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. The changes required that inventory be measured at the lower of cost and net realizable value, thereby eliminating the use of the other two market methodologies. Net realizable value is defined as the estimated selling prices in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. These changes did not apply to inventories measured using LIFO (last-in, first-out) or the retail inventory method. Arconic applies the net realizable value market option to measure non-LIFO inventories at the lower of cost or market. Management determined that the adoption of this guidance did not have a material impact on the Consolidated Financial Statements.

Recently Issued Accounting Guidance. In May 2014, the FASB issued changes to the recognition of revenue from contracts with customers. These changes created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue and, therefore, supersede virtually all existing revenue recognition requirements and guidance. This framework is expected to result in less complex guidance in application while providing a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract(s), (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract(s), and (v) recognize revenue when, or as, the entity satisfies a performance obligation. In August 2015, the FASB deferred the effective date of the new guidance by one year, making these changes effective for Arconic on January 1, 2018.

Arconic will adopt the new guidance using the modified retrospective transition approach, reflecting the cumulative effect of initially applying the new standard to revenue recognition in the first quarter of 2018. The Company had formed a project assessment and adoption team that reviewed contract terms to assess the impact of adopting the new guidance on the Consolidated Financial Statements. While the Company generally recognizes revenue at a point in time upon delivery and transfer of title and risk of loss for most arrangements, based on the contract reviews performed, certain contracts within the Engineered Products and Solutions segment were identified as potentially moving to over time revenue recognition. The Company modified certain contract terms in conjunction with its customers to remain at point-in-time revenue recognition. These modifications will not result in significant changes to revenue, business practices or controls. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements. The Company is in the process of identifying appropriate changes to its business processes and controls, as well as preparing for revisions to accounting policies and expanded disclosures related to revenue recognition in the notes to the Consolidated Financial Statements.

In January 2016, the FASB issued changes to equity investments. These changes require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values using the measurement alternative of cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. Also, the impairment assessment of equity investments without readily determinable fair values has been simplified by requiring a qualitative assessment to identify impairment. Also, the new guidance will require changes in fair value of equity securities to be recognized immediately as a component of net income instead of being reported in accumulated other comprehensive loss until the gain (loss) is realized. These changes became effective for Arconic on January 1, 2018 and have been applied on a prospective basis. Arconic elected the measurement alternative for its equity investments that do not have readily determinable fair values. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In February 2016, the FASB issued changes to the accounting and presentation of leases. These changes require lessees to recognize a right of use asset and lease liability on the balance sheet for all leases with terms longer than 12 months. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right of use asset and lease liability. Additionally, when measuring assets and liabilities arising from a lease, optional payments should be included only if the lessee is reasonably certain to exercise an option to extend the lease, exercise a purchase option, or not exercise an option to terminate the lease. These changes become effective for Arconic on January 1, 2019.  Arconic’s current operating lease portfolio is primarily comprised of land and buildings, plant equipment, vehicles, and computer equipment.  A cross-functional implementation team is in process of determining the scope of arrangements that will be subject to this standard as well as assessing the impact to the Company’s systems, processes and internal controls.  Management is evaluating the impact of these changes on the Consolidated Financial Statements, which will require right of use assets and lease liabilities be recorded in the consolidated balance sheet for operating leases. Therefore, an estimate of the impact is not currently determinable.  However, the adoption is not expected to have a material impact on the Statement of Consolidated Operations.  

In June 2016, the FASB added a new impairment model (known as the current expected credit loss (CECL) model) that is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses. The CECL model applies to most debt instruments, trade receivables, lease receivables, financial guarantee contracts, and other loan commitments. The CECL model does not have a minimum threshold for recognition of impairment losses and entities will need to measure expected credit losses on assets that have a low risk of loss. These changes become effective for Arconic on January 1, 2020. Management is currently evaluating the potential impact of these changes on the Consolidated Financial Statements.

In August 2016, the FASB issued changes to the classification of certain cash receipts and cash payments within the statement of cash flows. The guidance identifies eight specific cash flow items and the sections where they must be presented within the statement of cash flows. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. As of result of the adoption, Arconic will reclassify cash received related to beneficial interest in previously transferred trade accounts receivables from operating activities to investing activities in the Statement of Consolidated Cash Flows. This reclassification is expected to have a material impact on the Statement of Consolidated Cash Flows, but does not reflect a change in our underlying business or activities. Additionally, Arconic will reclassify cash paid for debt prepayments including extinguishment costs from operating activities to financing activities in the Statement of Consolidated Cash Flows.

In November 2016, the FASB issued changes to the classification of cash and cash equivalents within the statement of cash flow. Restricted cash and restricted cash equivalents will be included within the cash and cash equivalents line on the cash flow statement and a reconciliation must be prepared to the statement of financial position. Transfers between restricted cash and restricted cash equivalents and cash and cash equivalents will no longer be presented as cash flow activities in the statement of cash flows and for material balances of restricted cash and restricted cash equivalents an entity must disclose information regarding the nature of the restrictions. These changes became effective for Arconic on January 1, 2018 and will be applied retrospectively. Management has determined that the adoption of this guidance will not have a material impact on the Statement of Consolidated Cash Flows.

In March 2017, the FASB issued changes to shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. These changes become effective for Arconic on January 1, 2019 and early adoption is permitted. Management has determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In March 2017, the FASB issued changes to the presentation of net periodic pension cost and net periodic postretirement benefit cost. The new guidance requires registrants to present the service cost component of net periodic benefit cost in the same income statement line item or items as other employee compensation costs arising from services rendered during the period. Also, only the service cost component will be eligible for asset capitalization. Registrants will present the other components of net periodic benefit cost separately from the service cost component; and, the line item or items used in the income statement to present the other components of net periodic benefit cost must be disclosed. These changes became effective for Arconic on January 1, 2018 and will be adopted retrospectively for the presentation of the service cost component and the other components of net periodic benefit cost in the income statement, and prospectively for the asset capitalization of the service cost component of net periodic benefit cost. The Company currently records non-service related net periodic pension cost and net periodic postretirement benefit cost within Cost of goods sold, Selling, general, administrative and other expenses and Research and development expenses and upon the adoption of this standard will be recorded separately from service cost in the Other income, net line item in the Statement of Consolidated Operations. The impact of the retrospective adoption of this guidance will be an increase to consolidated Operating income of approximately $154 and $135 while there will be no impact to consolidated Net loss for the years ended December 31, 2017 and 2016, respectively. The prospective adoption of the asset capitalization of only the service cost component will have an impact of approximately $20 in the first quarter of 2018 Statement of Consolidated Operations.

In May 2017, the FASB issued clarification to guidance on the modification accounting criteria for share-based payment awards. The new guidance requires registrants to apply modification accounting unless three specific criteria are met. The three criteria are 1) the fair value of the award is the same before and after the modification, 2) the vesting conditions are the same before and after the modification and 3) the classification as a debt or equity award is the same before and after the modification. These changes became effective for Arconic on January 1, 2018 and are to be applied prospectively to new awards granted after adoption. Management determined that the adoption of this guidance will not have a material impact on the Consolidated Financial Statements.

In August 2017, the FASB issued guidance that will make more financial and nonfinancial hedging strategies eligible for hedge accounting. It also amends the presentation and disclosure requirements and changes how companies assess effectiveness. It is intended to more closely align hedge accounting with companies’ risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. These changes become effective for Arconic on January 1, 2019. For cash flow and net investment hedges existing at the date of adoption, Arconic will apply a cumulative-effect adjustment related to eliminating the separate measurement of ineffectiveness to accumulated other comprehensive income with a corresponding adjustment to the opening balance of retained earnings as of the beginning of the fiscal year in which the amendment is adopted. The amended presentation and disclosure guidance is required only prospectively. Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

In February 2018, the FASB issued guidance that allows a reclassification from Accumulated other comprehensive loss to Accumulated deficit for stranded tax effects resulting from the Tax Cuts and Jobs Act enacted on December 22, 2017. These changes become effective for Arconic on January 1, 2019.  Management is currently evaluating the potential impact of this guidance on the Consolidated Financial Statements.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Weighted-Average Useful Lives of Structures and Machinery and Equipment

The following table details the weighted-average useful lives of structures and machinery and equipment by reporting segment (numbers in years):

Segment	Structures	Machinery and equipment
Engineered Products and Solutions	29	17
Global Rolled Products	31	21
Transportation and Construction Solutions	27	18

Weighted-Average Useful Lives of Software and Other Intangible Assets

The following table details the weighted-average useful lives of software and other intangible assets by reporting segment (numbers in years):

Segment	Software	Other intangible assets
Engineered Products and Solutions	6	34
Global Rolled Products	6	9
Transportation and Construction Solutions	5	16

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Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Summary of Changes in Accumulated Other Comprehensive (Loss) by Component

The following table details the activity of the four components that comprise Accumulated other comprehensive loss for both Arconic’s shareholders and noncontrolling interests:

	Arconic									Noncontrolling Interests
	2017			2016			2015			2017			2016			2015
Pension and other postretirement benefits (U)
Balance at beginning of period	$	(2,010	)	$	(3,611	)	$	(3,601	)	$	—		$	(56	)	$	(64	)
Other comprehensive (loss) income:
Unrecognized net actuarial loss and prior service cost/benefit	(466		)	(1,112		)	(478		)	—			(9		)	5
Tax benefit (expense)	102			380			170			—			3			(1		)
Total Other comprehensive (loss) income before reclassifications, net of tax	(364		)	(732		)	(308		)	—			(6		)	4
Amortization of net actuarial loss and prior service cost/benefit(1)	222			389			458			—			4			6
Tax expense(2)	(78		)	(136		)	(160		)	—			(1		)	(2		)
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	144			253			298			—			3			4
Total Other comprehensive (loss) income	(220		)	(479		)	(10		)	—			(3		)	8
Transfer to Alcoa Corporation	—			2,080			—			—			59			—
Balance at end of period	$	(2,230	)	$	(2,010	)	$	(3,611	)	$	—		$	—		$	(56	)
Foreign currency translation
Balance at beginning of period	$	(689	)	$	(2,412	)	$	(846	)	$	(2	)	$	(780	)	$	(351	)
Other comprehensive income (loss)(3)	252			268			(1,566		)	2			182			(429		)
Transfer to Alcoa Corporation	—			1,455			—			—			596			—
Balance at end of period	$	(437	)	$	(689	)	$	(2,412	)	$	—		$	(2	)	$	(780	)
Available-for-sale securities
Balance at beginning of period	$	132		$	(5	)	$	—		$	—		$	—		$	—
Other comprehensive (loss) income (4)	(134		)	137			(5		)	—			—			—
Transfer to Alcoa Corporation	—			—			—			—			—			—
Balance at end of period	$	(2	)	$	132		$	(5	)	$	—		$	—		$	—
Cash flow hedges
Balance at beginning of period	$	(1	)	$	597		$	(230	)	—			$	(3	)	$	(2	)
Other comprehensive income (loss):
Net change from periodic revaluations	37			(843		)	1,138			—			36			(1		)
Tax (expense) benefit	(9		)	252			(340		)	—			(10		)	—
Total Other comprehensive income (loss) before reclassifications, net of tax	28			(591		)	798			—			26			(1		)
Net amount reclassified to earnings:
Aluminum contracts(5)	(2		)	1			21			—			—			—
Energy contracts(6)	—			(49		)	6			—			(34		)	—
Foreign exchange contracts(5)	—			—			5			—			—			—
Interest rate contracts(7)	—			9			1			—			5			—
Nickel contracts(6)	(1		)	1			2			—			—			—
Sub-total	(3		)	(38		)	35			—			(29		)	—
Tax benefit (expense)(2)	1			12			(6		)	—			8			—
Total amount reclassified from Accumulated other comprehensive loss, net of tax(8)	(2		)	(26		)	29			—			(21		)	—
Total Other comprehensive income (loss)	26			(617		)	827			—			5			(1		)
Transfer to Alcoa Corporation	—			19			—			—			(2		)	—
Balance at end of period	$	25		$	(1	)	$	597		$	—		$	—		$	(3	)

⁽¹⁾  These amounts were included in the computation of net periodic benefit cost for pension and other postretirement benefits (see Note T).

⁽²⁾  These amounts were included in Provision for income taxes on the accompanying Statement of Consolidated Operations.

⁽³⁾  In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.

⁽⁴⁾  Realized gains and losses were included in Other income, net on the accompanying Statement of Consolidated Operations.

⁽⁵⁾  These amounts were included in Sales on the accompanying Statement of Consolidated Operations.

⁽⁶⁾  These amounts were included in Cost of goods sold on the accompanying Statement of Consolidated Operations.

⁽⁷⁾  These amounts were included in Interest expense on the accompanying Statement of Consolidated Operations.

⁽⁸⁾  A positive amount indicates a corresponding charge to earnings and a negative amount indicates a corresponding benefit to earnings. These amounts were reflected on the accompanying Statement of Consolidated Operations in the line items indicated in footnotes 1 through 7.

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Separation Transaction and Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2017

Discontinued Operations and Disposal Groups [Abstract]

Summary of Discontinued Operations in Financial Statements

The results of operations of Alcoa Corporation were presented as discontinued operations in the Statement of Consolidated Operations as summarized below:

	Ten months ended October 31,			Year ended  December 31,
	2016			2015
Sales	$	6,752		$	10,121
Cost of goods sold (exclusive of expenses below)	5,655			7,965
Selling, general administrative, and other expenses	164			214
Research and development	28			69
Provision for depreciation, depletion and amortization	593			772
Restructuring and other charges	102			981
Interest expense	28			25
Other (income) expenses, net	(75		)	30
Income from discontinued operations before income taxes	257			65
Provision for income taxes	73			106
Income (loss) from discontinued operations after income taxes	184			(41		)
Less: Net income from discontinued operations attributable to noncontrolling interests	63			124
Net income (loss) from discontinued operations	$	121		$	(165	)

Disposal Groups, Including Discontinued Operations, Schedule Of Depreciation, Depletion, And Amortization

The following table presents depreciation, depletion and amortization, restructuring and other charges, and purchases of property, plant and equipment of the discontinued operations related to Alcoa Corporation:

For the year ended December 31,	2016		2015
Depreciation, depletion and amortization	$	593	$	772
Restructuring and other charges	$	102	$	981
Capital expenditures	$	298	$	391

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Restructuring and Other Charges (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Other Charges

Restructuring and other charges for each year in the three-year period ended December 31, 2017 were comprised of the following:

	2017			2016			2015
Asset impairments	$	58		$	80		$	—
Layoff costs	64			70			97
Net loss on divestitures of businesses (F)	57			3			136
Other	(3		)	27			(11		)
Reversals of previously recorded layoff costs	(11		)	(25		)	(8		)
Restructuring and other charges	$	165		$	155		$	214

Schedule of Restructuring and Other Charges by Reportable Segments, Pretax

The pre-tax impact of allocating such charges to segment results would have been as follows:

	2017		2016		2015
Engineered Products and Solutions	$	30	$	78	$	46
Global Rolled Products	72		40		121
Transportation and Construction Solutions	52		14		8
Segment total	154		132		175
Corporate	11		23		39
Total restructuring and other charges	$	165	$	155	$	214

Activity and Reserve Balances for Restructuring Charges

Activity and reserve balances for restructuring charges were as follows:

	Layoff costs			Other exit costs			Total
Reserve balances at December 31, 2014	$	48		$	20		$	68
2015:
Cash payments	(45		)	(12		)	(57		)
Restructuring charges	97			7			104
Other*	(16		)	(6		)	(22		)
Reserve balances at December 31, 2015	84			9			93
2016:
Cash payments	(73		)	(13		)	(86		)
Restructuring charges	70			27			97
Other*	(31		)	(14		)	(45		)
Reserve balances at December 31, 2016	50			9			59
2017:
Cash payments	(59		)	(6		)	(65		)
Restructuring charges	64			1			65
Other*	1			(2		)	(1		)
Reserve balances at December 31, 2017	$	56		$	2		$	58

* Other includes reversals of previously recorded restructuring charges and the effects of foreign currency translation. In 2017, Other for layoff costs also includes the reclassification of a stock awards reversal of $13. In 2016, Other for other exit costs also included a reclassification of $8 in asset retirement and $2 in environmental obligations, as these liabilities were included in Arconic’s separate reserves for asset retirement obligations and environmental remediation. Other for other exit costs also included a reclassification of $4 in legal obligations, as these liabilities were included in Arconic’s separate reserves for legal costs. In 2015, Other for other exit costs included a reclassification of $5 for certain obligations included in Arconic’s separate reserves for warranties, lease terminations and tax indemnities.

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Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table details the changes in the carrying amount of goodwill:

	Engineered Products and Solutions			Global Rolled Products			Transportation and Construction Solutions			Corporate*		Total
Balances at December 31, 2015
Goodwill	$	4,660		$	201		$	111		$	330	$	5,302
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,660			201			58			330		5,249
Acquisitions and Divestitures (F)	47			—			—			—		47
Translation and other	(128		)	(20		)	(1		)	1		(148		)
Balances at December 31, 2016
Goodwill	4,579			181			110			331		5,201
Accumulated impairment losses	—			—			(53		)	—		(53		)
	4,579			181			57			331		5,148
Impairment (A)	(719		)	—			—			—		(719		)
Translation and other	89			12			3			2		106
Balances at December 31, 2017
Goodwill	4,668			193			113			333		5,307
Accumulated impairment losses	(719		)	—			(53		)	—		(772		)
	$	3,949		$	193		$	60		$	333	$	4,535

* As of December 31, 2017, the amount reflected in Corporate is allocated to Arconic’s three reportable segments ($256 to Engineered Products and Solutions, $59 to Global Rolled Products and $18 to Transportation and Construction Solutions) for purposes of impairment testing (see Goodwill policy in Note A). This goodwill is reflected in Corporate for segment reporting purposes because it is not included in management’s assessment of performance by the three reportable segments.

Other Intangible Assets

Other intangible assets were as follows:

December 31, 2017	Gross carrying amount		Accumulated amortization
Computer software	$	789	$	(674	)
Patents and licenses	110		(107		)
Other intangibles	953		(116		)
Total amortizable intangible assets	1,852		(897		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,884	$	(897	)

December 31, 2016	Gross carrying amount		Accumulated amortization
Computer software	$	755	$	(623	)
Patents and licenses	110		(102		)
Other intangibles	897		(81		)
Total amortizable intangible assets	1,762		(806		)
Indefinite-lived trade names and trademarks	32		—
Total other intangible assets	$	1,794	$	(806	)

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Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventory Components

December 31,	2017		2016
Finished goods	$	669	$	625
Work-in-process	1,349		1,144
Purchased raw materials	381		408
Operating supplies	81		76
	$	2,480	$	2,253

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Properties, Plants, and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of Properties, Plants, and Equipment, Net

December 31,	2017		2016
Land and land rights	$	140	$	135
Structures:
Engineered Products and Solutions	784		733
Global Rolled Products	1,090		1,061
Transportation and Construction Solutions	268		254
Other	253		248
	2,395		2,296
Machinery and equipment:
Engineered Products and Solutions	3,054		2,728
Global Rolled Products	4,641		4,570
Transportation and Construction Solutions	777		723
Other	358		337
	8,830		8,358
	11,365		10,789
Less: accumulated depreciation and amortization	6,392		6,073
	4,973		4,716
Construction work-in-progress	621		783
	$	5,594	$	5,499

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Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-Term Debt.

December 31,	2017			2016
6.50% Bonds, due 2018	$	—		$	250
6.75% Notes, due 2018	—			750
5.72% Notes, due 2019	500			750
1.63% Convertible Notes, due 2019*	403			403
6.150% Notes, due 2020	1,000			1,000
5.40% Notes, due 2021	1,250			1,250
5.87% Notes, due 2022	627			627
5.125% Notes, due 2024	1,250			1,250
5.90% Notes, due 2027	625			625
6.75% Bonds, due 2028	300			300
5.95% Notes due 2037	625			625
Iowa Finance Authority Loan, due 2042 (4.75%)	250			250
Other**	(23		)	(32		)
	6,807			8,048
Less: amount due within one year	1			4
	$	6,806		$	8,044

* Amount was assumed in conjunction with the acquisition of RTI (see Note F).

** Other includes various financing arrangements related to subsidiaries, unamortized debt discounts related to the outstanding notes and bonds listed in the table above, an equity option related to the convertible notes due in 2019 (see Note F), adjustments to the carrying value of long-term debt related to an interest swap contract accounted for as a fair value hedge that was unwound during 2017, and unamortized debt issuance costs.

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Other Noncurrent Liabilities and Deferred Credits (Tables)

12 Months Ended

Dec. 31, 2017

Payables and Accruals [Abstract]

Schedule of Other Noncurrent Liabilities and Deferred Credits

December 31,	2017		2016
Environmental remediation (L)	$	253	$	260
Income taxes (Q)	162		154
Accrued compensation and retirement costs	218		216
Contingent payment related to an acquisition (F)	—		78
Other	126		162
	$	759	$	870

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Other Income, Net (Tables)

12 Months Ended

Dec. 31, 2017

Other Income and Expenses [Abstract]

Schedule of Other Expenses (Income), Net

	2017			2016			2015
Equity income	$	—		$	(7	)	$	—
Interest income	(19		)	(16		)	(16		)
Foreign currency (gains) losses, net	(5		)	(4		)	51
Net (gain) loss from asset sales	(513		)	11			(42		)
Net loss (gain) on mark-to-market derivative contracts	—			1			(3		)
Other, net	(103		)	(79		)	(18		)
	$	(640	)	$	(94	)	$	(28	)

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Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Paid for Interest and Income Taxes

Cash paid for interest and income taxes was as follows:

	2017		2016		2015
Interest, net of amount capitalized	$	508	$	524	$	487
Income taxes, net of amount refunded	$	118	$	324	$	345

Schedule of Cash Paid for Acquisitions Including Non-Controlling Interest

The details related to cash paid for acquisitions were as follows:

	2017		2016			2015
Assets acquired	$	—	$	—		$	2,003
Liabilities assumed	—		—			(868		)
Equity issued	—		—			(870		)
Working capital adjustment	—		(10		)	—
Increase in Arconic’s shareholders’ equity	—		—			(60		)
Cash paid	—		(10		)	205
Less: cash acquired	—		—			302
Net cash paid	$	—	$	(10	)	$	(97	)

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Segment and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Schedule of Operating Results and Assets of Arconic's Reportable Segments

The operating results and assets of Arconic’s reportable segments were as follows:

	Engineered Products and Solutions		Global Rolled Products		Transportation and Construction Solutions		Total
2017
Sales:
Third-party sales	$	5,935	$	4,992	$	1,985	$	12,912
Intersegment sales	—		148		—		148
Total sales	$	5,935	$	5,140	$	1,985	$	13,060
Profit and loss:
Depreciation and amortization	268		205		50		523
Adjusted EBITDA	1,224		599		321		2,144
2016
Sales:
Third-party sales	$	5,728	$	4,864	$	1,802	$	12,394
Intersegment sales	—		118		—		118
Total sales	$	5,728	$	4,982	$	1,802	$	12,512
Profit and loss:
Depreciation and amortization	$	255	$	201	$	48	$	504
Adjusted EBITDA	1,195		577		291		2,063
2015
Sales:
Third-party sales	$	5,342	$	5,253	$	1,882	$	12,477
Intersegment sales	—		125		—		125
Total sales	$	5,342	$	5,378	$	1,882	$	12,602
Profit and loss:
Depreciation and amortization	$	233	$	203	$	43	$	479
Adjusted EBITDA	1,111		512		271		1,894
2017
Assets:
Capital expenditures	$	308	$	178	$	57	$	543
Goodwill	3,949		193		60		4,202
Total assets	10,252		4,179		1,068		15,499
2016
Assets:
Capital expenditures	$	333	$	293	$	63	$	689
Goodwill	4,579		181		57		4,817
Total assets	10,542		3,891		982		15,415

Schedule of Reconciliation of Certain Segment Information to Consolidated Totals

The following tables reconcile certain segment information to consolidated totals:

	2017			2016			2015
Sales:
Total segment sales	$	13,060		$	12,512		$	12,602
Elimination of intersegment sales	(148		)	(118		)	(125		)
Corporate	48			—			(64		)
Consolidated sales	$	12,960		$	12,394		$	12,413

Schedule of Segment ATOI to Consolidated Net (Loss) Income Attributable to Arconic

	2017			2016			2015
Combined segment adjusted EBITDA	$	2,144		$	2,063		$	1,894
Unallocated amounts:
Depreciation and amortization	(551		)	(535		)	(508		)
Impairment of goodwill	(719		)	—			(25		)
Restructuring and other charges	(165		)	(155		)	(214		)
Impact of LIFO	(110		)	(18		)	101
Metal price lag	72			27			(175		)
Corporate expense	(274		)	(454		)	(371		)
Other	(71		)	(109		)	(74		)
Operating income	326			819			628
Interest expense	(496		)	(499		)	(473		)
Other income, net	640			94			28
Income from continuing operations before income taxes	470			414			183
Provision for income taxes	(544		)	(1,476		)	(339		)
Discontinued operations	—			121			(165		)
Net income attributable to noncontrolling interest	—			—			(1		)
Net loss attributable to Arconic	$	(74	)	$	(941	)	$	(322	)

Schedule of Segment Reporting Information to Consolidated Assets

December 31,	2017			2016
Assets:
Total segment assets	$	15,499		$	15,415
Unallocated amounts:
Cash and cash equivalents	2,150			1,863
Deferred income taxes	743			1,234
Corporate goodwill	333			331
Corporate fixed assets, net	310			308
LIFO reserve	(481		)	(371		)
Fair value of derivative contracts	91			24
Investment in common stock of Alcoa Corporation	—			1,020
Other	73			214
Consolidated assets	$	18,718		$	20,038

Sales by Major Product Grouping

Sales by major product grouping were as follows:

	2017		2016		2015
Sales:
Flat-rolled aluminum	$	4,992	$	4,864	$	5,253
Fastening systems and rings	2,102		2,060		2,168
Investment castings	1,983		1,870		1,812
Other extruded and forged products	1,565		1,495		1,332
Architectural aluminum systems	1,065		1,010		951
Aluminum wheels	805		689		790
Other	448		406		107
	$	12,960	$	12,394	$	12,413

Schedule of Geographic Information for Sales

Geographic information for sales was as follows (based upon the country where the point of sale occurred):

	2017		2016		2015
Sales:
United States	$	8,167	$	7,823	$	8,044
France	965		930		802
Hungary	739		619		622
United Kingdom	721		711		698
China	615		582		565
Russia	500		433		455
Germany	309		284		264
Brazil	285		250		297
Canada	261		262		180
Japan	141		145		138
Italy	37		127		139
Other	220		228		209
	$	12,960	$	12,394	$	12,413

Schedule of Geographic Information for Long-Lived Assets

Geographic information for long-lived assets was as follows (based upon the physical location of the assets):

December 31,	2017		2016
Long-lived assets:
United States	$	4,005	$	3,966
China	347		336
Russia	276		295
United Kingdom	259		232
Hungary	227		194
France	159		118
Germany	88		64
Canada	63		58
Brazil	62		97
Other	108		139
	$	5,594	$	5,499

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Preferred and Common Stock (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of Share Activity

Share Activity (number of shares)

	Common stock
	Treasury		Outstanding
Balance at end of 2014	87,150,169		1,216,663,661
Issued for stock-based compensation plans	(6,099,066	)	6,099,066
Acquisition of RTI	—		87,397,414
Balance at end of 2015	81,051,103		1,310,160,141
Issued for stock-based compensation plans	(5,219,660	)	5,302,128
Treasury stock retirement	(75,831,443	)	—
Reverse Stock Split	—		(876,942,489	)
Balance at end of 2016	—		438,519,780
Conversion of convertible notes	—		39,242,706
Issued for stock-based compensation plans	—		3,654,051
Balance at end of 2017	—		481,416,537

Schedule of Activity for Stock Options and Stock Awards

The activity for stock options and stock awards during 2017 was as follows (options and awards in millions):

	Stock options				Stock awards
	Number of options		Weighted average exercise price		Number of awards		Weighted average FMV per award
Outstanding, January 1, 2017	13		$	24.14	8		$	22.26
Granted	2		21.13		3		21.86
Exercised	(2	)	20.65		—		—
Converted	—		—		(2	)	24.95
Expired or forfeited	(2	)	25.99		(2	)	21.26
Performance share adjustment	—		—		—		21.48
Outstanding, December 31, 2017	11		23.94		7		21.49

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Reconciliation of Information Used to Compute Basic and Diluted EPS

The information used to compute basic and diluted EPS attributable to Arconic common shareholders was as follows (shares in millions):

	2017			2016			2015
Net loss from continuing operations attributable to Arconic	$	(74	)	$	(1,062	)	$	(156	)
Net income from continuing operations attributable to noncontrolling interests	—			—			(1		)
Less: preferred stock dividends declared	(53		)	(69		)	(69		)
Loss from continuing operations available to Arconic common shareholders	(127		)	(1,131		)	(226		)
Income (loss) from discontinued operations after income taxes and noncontrolling interests(1)	—			121			(165		)
Net loss available to Arconic common shareholders—basic	(127		)	(1,010		)	(391		)
Add: interest expense related to convertible notes	—			—			—
Add: dividends related to mandatory convertible preferred stock	—			—			—
Net loss available to Arconic common shareholders—diluted	$	(127	)	$	(1,010	)	$	(391	)
Average shares outstanding—basic	451			438			420
Effect of dilutive securities:
Stock options	—			—			—
Stock and performance awards	—			—			—
Mandatory convertible preferred stock	—			—			—
Convertible notes	—			—			—
Average shares outstanding—diluted	451			438			420

⁽¹⁾  Calculated from the Statement of Consolidated Operations as Income (loss) from discontinued operations after income taxes less Net income from discontinued operations attributable to noncontrolling interests.

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Components of Income from Continuing Operations Before Income Taxes

The components of income from continuing operations before income taxes were as follows:

	2017			2016		2015
United States	$	500		$	84	$	124
Foreign	(30		)	330		59
	$	470		$	414	$	183

Schedule of Provision for Income Taxes on Income from Continuing Operations

The provision for income taxes consisted of the following:

	2017			2016			2015
Current:
Federal*	$	—		$	—		$	—
Foreign	98			133			115
State and local	(2		)	1			(1		)
	96			134			114
Deferred:
Federal*	489			1,208			196
Foreign	37			136			29
State and local	(78		)	(2		)	—
	448			1,342			225
Total	$	544		$	1,476		$	339

*    Includes U.S. taxes related to foreign income

Reconciliation of U.S. Federal Statutory Rate to Arconic's Effective Tax Rate

A reconciliation of the U.S. federal statutory rate to Arconic’s effective tax rate was as follows (the effective tax rate for all periods was a provision on income):

	2017		2016		2015
U.S. federal statutory rate	35.0	%	35.0	%	35.0	%
Taxes on foreign operations	(7.5	)	(10.2	)	2.5
Federal benefit of state tax	3.1		0.4		0.3
Permanent differences on restructuring and other charges and asset disposals(1)	(167.4	)	(107.8	)	3.6
Non-deductible acquisition costs	0.3		8.4		7.1
Statutory tax rate and law changes(2)	52.5		(15.7	)	(1.0	)
Tax holidays	(3.0	)	(0.8	)	(3.9	)
Tax credits	(0.7	)	(1.2	)	(2.8	)
Changes in valuation allowances	137.9		426.8		145.8
Impairment of goodwill	53.5		—		4.8
Company-owned life insurance/split-dollar net premiums	—		23.0		(3.0	)
Changes in uncertain tax positions	10.1		2.1		(2.2	)
Other	1.9		(3.5	)	(1.0	)
Effective tax rate	115.7	%	356.5	%	185.2	%

⁽¹⁾  Additional losses were reported in Spain's 2017 tax return related to the Separation Transaction which are offset by an increased valuation allowance.

⁽²⁾  On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 ("the 2017 Act”) resulting in significant changes to the Internal Revenue Code (see below). In December 2016, Spain and the United States enacted tax law changes which resulted in the remeasurement of certain deferred tax liabilities recorded by Arconic.

Schedule of Components of Net Deferred Tax Assets and Liabilities

The components of net deferred tax assets and liabilities were as follows:

	2017					2016
December 31,	Deferred tax assets			Deferred tax liabilities		Deferred tax assets			Deferred tax liabilities
Depreciation	$	31		$	693	$	15		$	817
Employee benefits	936			23		1,382			8
Loss provisions	134			14		181			1
Deferred income/expense	19			1,144		20			74
Tax loss carryforwards	3,305			—		1,540			—
Tax credit carryforwards	638			—		652			—
Other	24			33		164			19
	5,087			1,907		3,954			919
Valuation allowance	(2,584		)	—		(1,940		)	—
	$	2,503		$	1,907	$	2,014		$	919

Schedule of Expiration Periods of Deferred Tax Assets

The following table details the expiration periods of the deferred tax assets presented above:

December 31, 2017	Expires within 10 years			Expires within 11-20 years			No expiration*			Other*			Total
Tax loss carryforwards	$	81		$	781		$	2,443		$	—		$	3,305
Tax credit carryforwards	531			97			10			—			638
Other	—			—			84			1,060			1,144
Valuation allowance	(467		)	(646		)	(1,376		)	(95		)	(2,584		)
	$	145		$	232		$	1,161		$	965		$	2,503

* Deferred tax assets with no expiration may still have annual limitations on utilization. Other represents deferred tax assets whose expiration is dependent upon the reversal of the underlying temporary difference. A substantial amount of Other relates to employee benefits that will become deductible for tax purposes over an extended period of time as contributions are made to employee benefit plans and payments are made to retirees.

Schedule of Changes in Valuation Allowance

The following table details the changes in the valuation allowance:

December 31,	2017			2016			2015
Balance at beginning of year	$	1,940		$	1,291		$	1,151
Increase to allowance	831			772			180
Release of allowance	(246		)	(209		)	(42		)
Acquisitions and divestitures (F)	(1		)	(1		)	29
Tax apportionment, tax rate and tax law changes	(24		)	106			(15		)
Foreign currency translation	84			(19		)	(12		)
Balance at end of year	$	2,584		$	1,940		$	1,291

Reconciliation of Unrecognized Tax Benefits (Excluding Interest and Penalties)

A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalties) was as follows:

December 31,	2017			2016			2015
Balance at beginning of year	$	28		$	18		$	7
Additions for tax positions of the current year	23			12			—
Additions for tax positions of prior years	27			—			14
Reductions for tax positions of prior years	—			—			(2		)
Settlements with tax authorities	—			(1		)	—
Expiration of the statute of limitations	(5		)	(1		)	(1		)
Foreign currency translation	—			—			—
Balance at end of year	$	73		$	28		$	18

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Receivables (Tables)

12 Months Ended

Dec. 31, 2017

Transfers and Servicing [Abstract]

Schedule of Allowance for Doubtful Accounts

The following table details the changes in the allowance for doubtful accounts related to customer receivables and other receivables:

	Customer receivables									Other receivables
December 31,	2017			2016			2015			2017			2016			2015
Balance at beginning of year	$	13		$	8		$	6		$	32		$	34		$	24
Provision for doubtful accounts	1			7			4			9			6			8
Write off of uncollectible accounts	(5		)	(3		)	(2		)	(1		)	(1		)	2
Recoveries of prior write-offs	—			(1		)	—			(3		)	1			(1		)
Other	(1		)	2			—			(3		)	(8		)	1
Balance at end of year	$	8		$	13		$	8		$	34		$	32		$	34

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Interest Cost Components (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Interest Cost Components

	2017		2016		2015
Amount charged to expense	$	496	$	499	$	473
Amount capitalized	22		32		27
	$	518	$	531	$	500

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Pension and Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Schedule of Obligations and Funded Status

Obligations and Funded Status

	Pension benefits						Other postretirement benefits
December 31,	2017			2016			2017			2016
Change in benefit obligation
Benefit obligation at beginning of year	$	7,026		$	14,247		$	980		$	2,319
Service cost	90			165			7			13
Interest cost	234			435			30			63
Amendments	1			2			—			—
Actuarial (gains) losses	311			770			1			112
Transfer to Alcoa Corporation	—			(7,577		)	—			(1,340		)
Settlements	—			(82		)	—			—
Benefits paid, net of participants’ contributions	(425		)	(794		)	(98		)	(197		)
Medicare Part D subsidy receipts	—			—			7			9
Foreign currency translation impact	122			(140		)	—			1
Benefit obligation at end of year(1)	$	7,359		$	7,026		$	927		$	980
Change in plan assets(1)
Fair value of plan assets at beginning of year	$	4,666		$	10,928		$	—		$	—
Actual return on plan assets	212			89			—			—
Employer contributions	310			296			—			—
Participants’ contributions	—			16			—			—
Benefits paid	(404		)	(762		)	—			—
Administrative expenses	(33		)	(65		)	—			—
Transfer to Alcoa Corporation	—			(5,610		)	—			—
Settlements	—			(82		)	—			—
Foreign currency translation impact	111			(144		)	—			—
Fair value of plan assets at end of year(1)	$	4,862		$	4,666		$	—		$	—
Funded status*	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Less: Amounts attributed to joint venture partners	—			—			—			—
Net funded status	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in the Consolidated Balance Sheet consist of:
Noncurrent assets	$	89		$	6		$	—		$	—
Current liabilities	(22		)	(21		)	(86		)	(91		)
Noncurrent liabilities	(2,564		)	(2,345		)	(841		)	(889		)
Net amount recognized	$	(2,497	)	$	(2,360	)	$	(927	)	$	(980	)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Net actuarial loss	$	3,240		$	2,979		$	146		$	150
Prior service cost (benefit)	10			15			(37		)	(45		)
Total, before tax effect	3,250			2,994			109			105
Less: Amounts attributed to joint venture partners	—			—			—			—
Net amount recognized, before tax effect	$	3,250		$	2,994		$	109		$	105
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss consist of:
Net actuarial loss (gain)	$	481		$	(1,992	)	$	1		$	(224	)
Amortization of accumulated net actuarial loss	(220		)	(380		)	(5		)	(24		)
Prior service (benefit) cost	—			(42		)	—			37
Amortization of prior service (cost) benefit	(5		)	(13		)	8			24
Total, before tax effect	256			(2,427		)	4			(187		)
Less: Amounts attributed to joint venture partners	—			38			—			—
Net amount recognized, before tax effect	$	256		$	(2,389	)	$	4		$	(187	)

⁽¹⁾  At December 31, 2017, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $6,018, $3,544, and $(2,474), respectively. At December 31, 2016, the benefit obligation, fair value of plan assets, and funded status for U.S. pension plans were $5,707, $3,495, and $(2,212), respectively.

Schedule of Pension Plan Benefit Obligations

Pension Plan Benefit Obligations

	Pension benefits
	2017		2016
The projected benefit obligation and accumulated benefit obligation for all defined benefit pension plans was as follows:
Projected benefit obligation	$	7,359	$	7,026
Accumulated benefit obligation	7,169		6,850
The aggregate projected benefit obligation and fair value of plan assets for pension plans with projected benefit obligations in excess of plan assets was as follows:
Projected benefit obligation	6,600		6,995
Fair value of plan assets	4,016		4,629
The aggregate accumulated benefit obligation and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets was as follows:
Accumulated benefit obligation	6,422		6,104
Fair value of plan assets	3,998		3,894

Components of Net Periodic Benefit Cost

Components of Net Periodic Benefit Cost

	Pension benefits(1)									Other postretirement benefits(2)
	2017			2016			2015			2017			2016			2015
Service cost	$	90		$	155		$	175		$	7		$	13		$	14
Interest cost	234			431			577			30			63			92
Expected return on plan assets	(332		)	(677		)	(753		)	—			—			—
Recognized net actuarial loss	220			380			468			5			24			17
Amortization of prior service cost (benefit)	5			13			16			(8		)	(24		)	(37		)
Settlements(3)	—			19			16			—			—			—
Curtailments(4)	—			—			9			—			—			(4		)
Special termination benefits(5)	—			2			16			—			—			—
Net periodic benefit cost(6)	$	217		$	323		$	524		$	34		$	76		$	82
Discontinued operations	—			122			248			—			41			43
Net amount recognized in Statement of Consolidated Operations	$	217		$	201		$	276		$	34		$	35		$	39

Note: the footnotes below include components of Net Periodic Benefit Cost related to Alcoa Corporation through the completion of the Separation Transaction.

⁽¹⁾  In 2017, 2016 and 2015, net periodic benefit cost for U.S. pension plans was $206, $261, and $423, respectively.

⁽²⁾  In 2017, 2016 and 2015, net periodic benefit cost for other postretirement benefits reflects a reduction of $11, $22, and $34, respectively, related to the recognition of the federal subsidy awarded under Medicare Part D.

⁽³⁾  In 2016, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts. In 2015, settlements were due to workforce reductions (see Note D) and the payment of lump sum benefits and/or purchases of annuity contracts.

⁽⁴⁾  In 2015, curtailments were due to elimination of benefits or workforce reductions (see Note D).

⁽⁵⁾  In 2016 and 2015, special termination benefits were due to workforce reductions (see Note D).

⁽⁶⁾  Amounts attributed to joint venture partners are not included.

Schedule of Amounts Expected to be Recognized in Net Periodic Benefit Cost

Amounts Expected to be Recognized in Net Periodic Benefit Cost

	Pension benefits	Other postretirement benefits
	2018	2018
Net actuarial loss recognition	168	9
Prior service cost (benefit) recognition	3	(8	)

Schedule of Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost

Weighted average assumptions used to determine net periodic benefit cost for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Discount rate to calculate service cost*	4.20	%	4.29	%	4.00	%
Discount rate to calculate interest cost*	3.60		3.15		4.00
Expected long-term rate of return on plan assets	7.75		7.75		7.75
Rate of compensation increase	3.50		3.50		3.50

* In all periods presented, the respective discount rates were used to determine net periodic benefit cost for most U.S. pension plans for the full annual period. However, the discount rates for a limited number of plans were updated during 2017, 2016, and 2015 to reflect the remeasurement of these plans due to new union labor agreements, settlements, and/or curtailments. The updated discount rates used were not significantly different from the discount rates presented.

Weighted average assumptions used to determine benefit obligations for U.S. pension and other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

December 31,	2017		2016
Discount rate	3.75	%	4.20	%
Rate of compensation increase	3.50		3.50

Schedule of Assumed Health Care Cost Trend Rates

Assumed health care cost trend rates for U.S. other postretirement benefit plans were as follows (assumptions for non-U.S. plans did not differ materially):

	2017		2016		2015
Health care cost trend rate assumed for next year	5.50	%	5.50	%	5.50	%
Rate to which the cost trend rate gradually declines	4.50	%	4.50	%	4.50	%
Year that the rate reaches the rate at which it is assumed to remain	2021		2020		2019

Schedule of One-Percentage Point Change in Assumed Rates of Health Care Cost Trend Rates

Assumed health care cost trend rates have an effect on the amounts reported for the health care plan. A one-percentage point change in these assumed rates would have the following effects:

	1% increase		1% decrease
Effect on other postretirement benefit obligations	$	29	$	(28	)
Effect on total of service and interest cost components	1		(1		)

Schedule of Pension and Postretirement Plans Investment Policy and Weighted Average Asset Allocations

Arconic’s pension plans’ investment policy and weighted average asset allocations at December 31, 2017 and 2016, by asset class, were as follows:

		Plan assets at December 31,
Asset class	Policy range	2017		2016
Equities	20–55%	28	%	30	%
Fixed income	25–55%	47		42
Other investments	15–35%	25		28
Total		100	%	100	%

The following table presents the fair value of pension plan assets classified under the appropriate level of the fair value hierarchy or net asset cost:

December 31, 2017	Level 1		Level 2		Net asset value		Total
Equities:
Equity securities	$	379	$	—	$	593	$	972
Long/short equity hedge funds	—		—		230		230
Private equity	—		—		155		155
	$	379	$	—	$	978	$	1,357
Fixed income:
Intermediate and long duration government/credit	$	201	$	981	$	779	$	1,961
Other	164		8		145		317
	$	365	$	989	$	924	$	2,278
Other investments:
Real estate	$	85	$	—	$	172	$	257
Discretionary and systematic macro hedge funds	—		—		583		583
Other	77		7		275		359
	$	162	$	7	$	1,030	$	1,199
Net plan assets*	$	906	$	996	$	2,932	$	4,834

December 31, 2016	Level 1		Level 2		Net Asset Value		Total
Equities
Equity securities	$	393	$	—	$	431	$	824
Long/short equity hedge funds	—		—		406		406
Private equity	—		—		165		165
	$	393	$	—	$	1,002	$	1,395
Fixed income:
Intermediate and long duration government/credit	$	23	$	95	$	655	$	773
Other	1,060		51		74		1,185
	$	1,083	$	146	$	729	$	1,958
Other investments:
Real estate	$	81	$	—	$	185	$	266
Discretionary and systematic macro hedge funds	—		—		784		784
Other	65		—		178		243
	$	146	$	—	$	1,147	$	1,293
Net plan assets**	$	1,622	$	146	$	2,878	$	4,646

* As of December 31, 2017, the total fair value of pension plans’ assets excludes a net receivable of $28, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold but not yet settled plus interest and dividends earned on various investments.

** As of December 31, 2016, the total fair value of pension plans’ assets excludes a net receivable of $20, which represents assets due from Alcoa Corporation as a result of plan separations and securities sold not yet settled plus interest and dividends earned on various investments.

Schedule of Benefit Payments Expected to be Paid and Expected Medicare Part D Subsidy Receipts

Benefit payments expected to be paid to pension and other postretirement benefit plans’ participants and expected Medicare Part D subsidy receipts are as follows utilizing the current assumptions outlined above:

Year ended December 31,	Pension benefits paid		Gross Other post- retirement benefits		Medicare Part D subsidy receipts		Net Other post- retirement benefits
2018	$	435	$	90	$	5	$	85
2019	440		90		5		85
2020	440		90		5		85
2021	445		90		5		85
2022	450		90		5		85
Thereafter	2,265		335		25		310
	$	4,475	$	785	$	50	$	735

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Other Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Carrying Values and Fair Values of Other Financial Instruments

The carrying values and fair values of Arconic’s financial instruments were as follows:

	2017				2016
December 31,	Carrying value		Fair value		Carrying value		Fair value
Cash and cash equivalents	$	2,150	$	2,150	$	1,863	$	1,863
Restricted cash	4		4		15		15
Derivatives – current asset	61		61		14		14
Noncurrent receivables	20		20		21		21
Derivatives – noncurrent asset	33		33		10		10
Available-for-sale securities	106		106		102		102
Investment in common stock of Alcoa Corporation	—		—		1,020		1,020
Short-term debt	38		38		40		40
Derivatives – current liability	45		45		5		5
Commercial paper	—		—		—		—
Derivatives – noncurrent liability	14		14		3		3
Contingent payment related to an acquisition	—		—		78		78
Long-term debt, less amount due within one year	6,806		7,443		8,044		8,519

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Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Data

Supplemental Financial Information (unaudited)

Quarterly Data

(in millions, except per-share amounts)

	First			Second		Third		Fourth(2)			Year
2017
Sales	$	3,192		$	3,261	$	3,236	$	3,271		$	12,960
Net income (loss) attributable to Arconic	$	322		$	212	$	119	$	(727	)	$	(74	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Net income (loss) per share—basic	$	0.69		$	0.44	$	0.23	$	(1.51	)	$	(0.28	)
Diluted
Net income (loss) per share—diluted	$	0.65		$	0.43	$	0.22	$	(1.51	)	$	(0.28	)
2016
Sales	$	3,055		$	3,234	$	3,138	$	2,967		$	12,394
Net income (loss) attributable to Arconic	$	16		$	135	$	166	$	(1,258	)	$	(941	)
Earnings (loss) per share attributable to Arconic common shareholders(1):
Basic
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.23		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.34	$	(2.91	)	$	(2.31	)
Diluted
Continuing operations	$	0.21		$	0.08	$	0.11	$	(2.98	)	$	(2.58	)
Discontinued operations	(0.21		)	0.19		0.22		0.07			0.27
Net income (loss) per share—basic	$	0.00		$	0.27	$	0.33	$	(2.91	)	$	(2.31	)

⁽¹⁾  Per share amounts are calculated independently for each period presented; therefore, the sum of the quarterly per share amounts may not equal the per share amounts for the year.

⁽²⁾  In the fourth quarter of 2017, Arconic recorded an impairment of goodwill related to the forgings and extrusions business of $719 ($719 pre-tax); a provisional charge of $272 associated with the revaluation of U.S. net deferred tax assets due to a decrease in the U.S. corporate tax rate from 35% to 21%, as well as a one-time transition tax on the non-previously taxed earnings and profits of certain U.S.-owned foreign corporations as of December 31, 2017; a favorable adjustment to the Firth Rixson earn-out liability of $81 ($81 pre-tax); and a favorable adjustment to a separation-related guarantee liability of $18 ($25 pre-tax). In the fourth quarter of 2016, as a result of the Separation Transaction, Arconic recorded a charge of $1,267 for valuation allowances on certain deferred tax assets.

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Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended			12 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) reporting_unit	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Original maturity of cash equivalents				3 months
Number of reporting units | reporting_unit				8
Segment allocation, goodwill recognized		$ 4,535,000,000	$ 5,249,000,000	$ 4,535,000,000	$ 5,148,000,000	$ 5,249,000,000
Minimum percentage of estimated fair value of reporting unit to be less than carrying amount of goodwill				50.00%
Period required for impairment testing of reporting units				3 years
Goodwill impairment				$ 719,000,000	0	25,000,000
Businesses expected to be disposed within, years				1 year
Adjustments for New Accounting Pronouncement | Pro Forma
Summary Of Significant Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle, effect of change on operating results				$ 154,000,000	$ 135,000,000
Adjustments for New Accounting Pronouncement | Scenario, Forecast
Summary Of Significant Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle, effect of change on operating results	$ 20,000,000
Engineered Products and Solutions
Summary Of Significant Accounting Policies [Line Items]
Number of reporting units | reporting_unit				4
Number of reporting units for goodwill allocation | reporting_unit				2
Number of reporting units being subjected to goodwill impairment test | reporting_unit				6
Goodwill impairment		719,000,000		$ 719,000,000
Engineered Products and Solutions | Fastening systems and rings
Summary Of Significant Accounting Policies [Line Items]
Segment allocation, goodwill recognized		2,221,000,000		2,221,000,000
Engineered Products and Solutions | Alcoa Power and Propulsion
Summary Of Significant Accounting Policies [Line Items]
Segment allocation, goodwill recognized		1,686,000,000		$ 1,686,000,000
Engineered Products and Solutions | Alcoa Forging and Extrusions
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment		$ 719,000,000
Transportation and Construction Solutions
Summary Of Significant Accounting Policies [Line Items]
Number of reporting units | reporting_unit				3
Goodwill impairment						25,000,000
Other Operating Segments
Summary Of Significant Accounting Policies [Line Items]
Qualitative assessment for reporting units | reporting_unit				1
Primary Metals
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment			$ 25,000,000
Implied fair value of goodwill						$ 0
Minimum | Engineered Products and Solutions
Summary Of Significant Accounting Policies [Line Items]
Percentage of total goodwill allocated to two reporting units				85.00%

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Summary of Significant Accounting Policies - Weighted-Average Useful Lives of Structures and Machinery and Equipment (Detail)	12 Months Ended
	Dec. 31, 2017
Structures | Engineered Products and Solutions
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	29 years
Structures | Global Rolled Products
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	31 years
Structures | Transportation and Construction Solutions
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	27 years
Machinery and equipment | Engineered Products and Solutions
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	17 years
Machinery and equipment | Global Rolled Products
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	21 years
Machinery and equipment | Transportation and Construction Solutions
Property, Plant and Equipment [Line Items]
Weighted-average useful lives of assets, years	18 years

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Summary of Significant Accounting Policies - Weighted-Average Useful Lives of Software and Other Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2017
Software | Engineered Products and Solutions
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	6 years
Software | Global Rolled Products
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	6 years
Software | Transportation and Construction Solutions
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	5 years
Other intangible assets | Engineered Products and Solutions
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	34 years
Other intangible assets | Global Rolled Products
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	9 years
Other intangible assets | Transportation and Construction Solutions
Finite-Lived Intangible Assets [Line Items]
Weighted-average useful lives of other intangible assets	16 years

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Accumulated Other Comprehensive Loss - Summary of Changes in Accumulated Other Comprehensive (Loss) Income by Component (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Pension and other postretirement benefits
Balance at beginning of period	$ (2,568)
Total Other comprehensive (loss) income	(220)	$ (482)	$ (2)
Balance at end of period	(2,644)	(2,568)
Foreign currency translation
Other comprehensive income (loss)	254	450	(1,995)
Available-for-sale securities
Other comprehensive income (loss)	(134)	137	(5)
Cash flow hedges
Total Other comprehensive (loss) income	26	(612)	826
Accumulated Other Comprehensive Loss
Pension and other postretirement benefits
Balance at beginning of period	(2,010)	(3,611)	(3,601)
Unrecognized net actuarial loss and prior service cost/benefit	(466)	(1,112)	(478)
Tax benefit (expense)	102	380	170
Total Other comprehensive (loss) income before reclassifications, net of tax	(364)	(732)	(308)
Amortization of net actuarial loss and prior service cost/benefit	222	389	458
Tax expense	(78)	(136)	(160)
Total amount reclassified from Accumulated other comprehensive loss, net of tax	144	253	298
Total Other comprehensive (loss) income	(220)	(479)	(10)
Transfer to Alcoa Corporation	0	2,080	0
Balance at end of period	(2,230)	(2,010)	(3,611)
Foreign currency translation
Balance at beginning of period	(689)	(2,412)	(846)
Other comprehensive income (loss)	252	268	(1,566)
Transfer to Alcoa Corporation	0	1,455	0
Balance at end of period	(437)	(689)	(2,412)
Available-for-sale securities
Balance at beginning of period	132	(5)	0
Other comprehensive income (loss)	(134)	137	(5)
Transfer to Alcoa Corporation	0	0	0
Balance at end of period	(2)	132	(5)
Cash flow hedges
Balance at beginning of period	(1)	597	(230)
Net change from periodic revaluations	37	(843)	1,138
Tax benefit (expense)	(9)	252	(340)
Total Other comprehensive (loss) income before reclassifications, net of tax	28	(591)	798
Net amount reclassified to earnings	(3)	(38)	35
Tax benefit (expense)	1	12	(6)
Total amount reclassified from Accumulated other comprehensive loss, net of tax	(2)	(26)	29
Total Other comprehensive (loss) income	26	(617)	827
Transfer to Alcoa Corporation	0	19	0
Balance at end of period	25	(1)	597
Accumulated Other Comprehensive Loss | Aluminum Contracts
Cash flow hedges
Net amount reclassified to earnings	(2)	1	21
Accumulated Other Comprehensive Loss | Energy Contracts
Cash flow hedges
Net amount reclassified to earnings	0	(49)	6
Accumulated Other Comprehensive Loss | Foreign Exchange Contracts
Cash flow hedges
Net amount reclassified to earnings	0	0	5
Accumulated Other Comprehensive Loss | Interest Rate Contracts
Cash flow hedges
Net amount reclassified to earnings	0	9	1
Accumulated Other Comprehensive Loss | Nickel Contracts
Cash flow hedges
Net amount reclassified to earnings	(1)	1	2
Noncontrolling Interests
Pension and other postretirement benefits
Balance at beginning of period	0	(56)	(64)
Unrecognized net actuarial loss and prior service cost/benefit	0	(9)	5
Tax benefit (expense)	0	3	(1)
Total Other comprehensive (loss) income before reclassifications, net of tax	0	(6)	4
Amortization of net actuarial loss and prior service cost/benefit	0	4	6
Tax expense	0	(1)	(2)
Total amount reclassified from Accumulated other comprehensive loss, net of tax	0	3	4
Total Other comprehensive (loss) income	0	(3)	8
Transfer to Alcoa Corporation	0	59	0
Balance at end of period	0	0	(56)
Foreign currency translation
Balance at beginning of period	(2)	(780)	(351)
Other comprehensive income (loss)	2	182	(429)
Transfer to Alcoa Corporation	0	596	0
Balance at end of period	0	(2)	(780)
Available-for-sale securities
Balance at beginning of period	0	0	0
Other comprehensive income (loss)	0	0	0
Transfer to Alcoa Corporation	0	0	0
Balance at end of period	0	0	0
Cash flow hedges
Balance at beginning of period	0	(3)	(2)
Net change from periodic revaluations	0	36	(1)
Tax benefit (expense)	0	(10)	0
Total Other comprehensive (loss) income before reclassifications, net of tax	0	26	(1)
Net amount reclassified to earnings	0	(29)	0
Tax benefit (expense)	0	8	0
Total amount reclassified from Accumulated other comprehensive loss, net of tax	0	(21)	0
Total Other comprehensive (loss) income	0	5	(1)
Transfer to Alcoa Corporation	0	(2)	0
Balance at end of period	0	0	(3)
Noncontrolling Interests | Aluminum Contracts
Cash flow hedges
Net amount reclassified to earnings	0	0	0
Noncontrolling Interests | Energy Contracts
Cash flow hedges
Net amount reclassified to earnings	0	(34)	0
Noncontrolling Interests | Foreign Exchange Contracts
Cash flow hedges
Net amount reclassified to earnings	0	0	0
Noncontrolling Interests | Interest Rate Contracts
Cash flow hedges
Net amount reclassified to earnings	0	5	0
Noncontrolling Interests | Nickel Contracts
Cash flow hedges
Net amount reclassified to earnings	$ 0	$ 0	$ 0

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Separation Transaction and Discontinued Operations - Additional Information (Detail)				1 Months Ended		2 Months Ended	3 Months Ended		12 Months Ended
	Oct. 02, 2017 shares	Nov. 01, 2016 USD ($) agreement	Oct. 20, 2016 shares	Feb. 28, 2017 USD ($) shares	Sep. 30, 2014 shares	May 31, 2017 USD ($) investment_bank $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Feb. 14, 2017 $ / shares
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investment in common stock of Alcoa Corporation									$ 0	$ 1,020,000,000
Common stock sold (in shares) | shares	24,022				25,000,000		12,958,767
Common stock sold per share (usd per share) | $ / shares							$ 35.91
Pre-tax gain on sale of common stock							$ 167,000,000		167,000,000
Proceeds from Alcoa Corporation's sale of Yadkin Hydroelectric Project									245,000,000	16,000,000	$ 25,000,000
Debt issuance and capital expenditures incurred										110,000,000
Impairment charges		$ 0							58,000,000	80,000,000	0
Selling, General Administrative, and Other Expenses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Costs related to separation transaction, pre-tax									18,000,000	193,000,000	24,000,000
Costs related to separation transaction, after-tax									12,000,000	$ 158,000,000	$ 24,000,000
Alcoa Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock outstanding percentage		80.10%
Percentage of common stock retained			19.90%
Common stock conversion ratio			0.333
Number of common stock retained (in shares) | shares			36,311,767
Common stock sold (in shares) | shares				23,353,000
Common stock sold per share (usd per share) | $ / shares												$ 38.03
Cash proceeds sale of common stock								$ 888,000,000
Pre-tax gain on sale of common stock				$ 351,000,000
Number of counterparties | investment_bank						2
Payment guarantees related to disposal group | agreement		2
Proceeds from Alcoa Corporation's sale of Yadkin Hydroelectric Project							$ 5,000,000	$ 238,000,000	$ 243,000,000
Investment Banks
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock sold (in shares) | shares						12,958,767
Common stock sold per share (usd per share) | $ / shares						$ 35.91
Pre-tax gain on sale of common stock						$ 167,000,000

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Separation Transaction and Discontinued Operations - Summary of Discontinued Operations in Statement of Consolidated Operations (Detail) - USD ($) $ in Millions	10 Months Ended	12 Months Ended
	Oct. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes		$ 0	$ 184	$ (41)
Less: Net income from discontinued operations attributable to noncontrolling interests		0	63	124
Net income (loss) from discontinued operations		$ 0	$ 121	(165)
Alcoa Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	$ 6,752			10,121
Cost of goods sold (exclusive of expenses below)	5,655			7,965
Selling, general administrative, and other expenses	164			214
Research and development	28			69
Provision for depreciation, depletion and amortization	593			772
Restructuring and other charges	102			981
Interest expense	28			25
Other (income) expenses, net	(75)			30
Income from discontinued operations before income taxes	257			65
Provision for income taxes	73			106
Income (loss) from discontinued operations after income taxes	184			(41)
Less: Net income from discontinued operations attributable to noncontrolling interests	63			124
Net income (loss) from discontinued operations	$ 121			$ (165)

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Separation Transaction and Discontinued Operations - Summary of Discontinued Operations in Statement of Consolidated Cash Flows (Detail) - Alcoa Corporation - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation, depletion and amortization	$ 593	$ 772
Restructuring and other charges	102	981
Capital expenditures	$ 298	$ 391

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Restructuring and Other Charges - Schedule of Restructuring and Other Charges (Detail) - USD ($)		12 Months Ended
	Nov. 01, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring and Related Activities [Abstract]
Asset impairments	$ 0	$ 58,000,000	$ 80,000,000	$ 0
Layoff costs		64,000,000	70,000,000	97,000,000
Net loss on divestitures of businesses (F)		57,000,000	3,000,000	136,000,000
Other		(3,000,000)	27,000,000	(11,000,000)
Reversals of previously recorded layoff costs		(11,000,000)	(25,000,000)	(8,000,000)
Restructuring and other charges		$ 165,000,000	$ 155,000,000	$ 214,000,000

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Restructuring and Other Charges - 2017 Actions (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) employee position	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 165	$ 155	$ 214
Restructuring and other charges after tax	$ 143	114	192
Number of employees associated with layoff costs | position	880
Reversal of forfeited executive stock compensation	$ 13
Severance costs	64	70	97
Other exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	69	57
Restructuring and other charges after tax	47	46
Divested Businesses
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges after tax	41
Severance costs	7
Reversal Of Forfeited Executive Stock Compensation
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(6)
Restructuring and other charges after tax and noncontrolling interests	4
Other Miscellaneous Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	12	11	7
Restructuring and other charges after tax		8	4
Restructuring and other charges after tax and noncontrolling interests	7
Other Adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(11)	25	8
Restructuring and other charges after tax		12	3
Restructuring and other charges after tax and noncontrolling interests	$ 8
Restructuring Programs Layoffs Two Thousand Seventeen
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee	880
Approximate number of employees already laid off | employee	300
Restructuring charges for layoffs	$ 28
Fusina Italy
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	60
Restructuring and other charges after tax and noncontrolling interests	60
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 11	$ 23	39
Number of employees associated with layoff costs | position	100
Latin America Extrusions (LAE) | Divested Businesses
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 41
Engineered Products and Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	400
Global Rolled Products
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	245
Global Rolled Products | Divested Businesses
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			136
Restructuring and other charges after tax			$ 134
Transportation and Construction Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	135

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Restructuring and Other Charges - 2016 Actions (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) employee position	Dec. 31, 2016 USD ($)	Dec. 31, 2016 facility	Dec. 31, 2016 employee	Dec. 31, 2016 position	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 165	$ 155				$ 214
Restructuring and other charges after tax	$ 143	114				192
Number of employees associated with layoff costs | position	880
Layoff costs	$ 64	70				97
United Kingdom
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee				60
Other exit costs		4
Layoff costs		2
Tennessee | Alcoa Corporation | Toll Processing and Services Agreement
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		21
Number of employees associated with layoff costs | position					145
Other exit costs		9
Layoff costs		7
RTI
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		3
Restructuring and other charges after tax		2
Engineered Products and Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	400
Global Rolled Products
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	245
Transportation and Construction Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position	135
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 11	23				39
Number of employees associated with layoff costs | position	100
Other exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 69	57
Restructuring and other charges after tax	$ 47	46
Other exit costs | Tennessee | Alcoa Corporation | Toll Processing and Services Agreement
Restructuring Cost and Reserve [Line Items]
Other exit costs		2
Shutdown and Curtailment Actions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		37
Restructuring and other charges after tax		24
Closure Of Five Facility
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		20
Restructuring and other charges after tax		14
Number of facilities closed | facility			5
Number of employees associated with layoff costs | position					280
Restructuring Programs Layoffs 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		53
Restructuring and other charges after tax		33
Number of employees associated with layoff costs	1,700			1,750	1,315
Approximate number of employees already laid off | employee	1,280
Restructuring charges for layoffs	$ 26	16
Restructuring Programs Layoffs 2016 | Engineered Products and Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position					1,045
Restructuring Programs Layoffs 2016 | Global Rolled Products
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position					30
Restructuring Programs Layoffs 2016 | Transportation and Construction Solutions
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position					30
Restructuring Programs Layoffs 2016 | Corporate
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position					210
Other Miscellaneous Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	12	11				7
Restructuring and other charges after tax		8				4
Pension Settlement Cost
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		2
Restructuring and other charges after tax		1
Other Adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (11)	25				8
Restructuring and other charges after tax		12				$ 3
Asset Impairment and Accelerated Depreciation | United Kingdom
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		51
Asset Retirement Obligations | Tennessee | Alcoa Corporation | Toll Processing and Services Agreement
Restructuring Cost and Reserve [Line Items]
Other exit costs		4
Environmental Remediation
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		2
Environmental Remediation | Tennessee | Alcoa Corporation | Toll Processing and Services Agreement
Restructuring Cost and Reserve [Line Items]
Other exit costs		$ 3

XML

Restructuring and Other Charges - 2015 Actions (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) employee	Dec. 31, 2014 divestiture
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 165	$ 155	$ 214
Restructuring and other charges after tax and noncontrolling interest	143	114	192
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	11	23	39
Divested Businesses
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges after tax and noncontrolling interest	41
Number of plant divestitures | divestiture				3
Divested Businesses | Global Rolled Products
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			136
Restructuring and other charges after tax and noncontrolling interest			134
Restructuring Programs Layoffs Two Thousand Fourteen
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			97
Restructuring and other charges after tax and noncontrolling interest			$ 70
Number of positions | employee			1,505
Restructuring Programs Layoffs Two Thousand Fourteen | Corporate
Restructuring Cost and Reserve [Line Items]
Number of positions | employee			400
Restructuring Programs Layoffs Two Thousand Fourteen | Global Rolled Products
Restructuring Cost and Reserve [Line Items]
Number of positions | employee			90
Restructuring Programs Layoffs Two Thousand Fourteen | Engineered Products and Solutions
Restructuring Cost and Reserve [Line Items]
Number of positions | employee			590
Restructuring Programs Layoffs Two Thousand Fourteen | Transportation and Construction Solutions
Restructuring Cost and Reserve [Line Items]
Number of positions | employee			425
Restructuring Programs Layoffs 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges for layoffs	5	55	$ 18
Shutdown and Curtailment Actions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		37
Restructuring and other charges after tax and noncontrolling interest		24
Shutdown and Curtailment Actions | Australia
Restructuring Cost and Reserve [Line Items]
Gain on sale of land			18
Gain on sale of land after tax			13
Other Miscellaneous Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	12	11	7
Restructuring and other charges after tax and noncontrolling interest		8	4
Other Adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (11)	25	8
Restructuring and other charges after tax and noncontrolling interest		$ 12	$ 3

XML

Restructuring and Other Charges - Schedule of Restructuring and Other Charges by Reportable Segments, Pretax (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 165	$ 155	$ 214
Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	154	132	175
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	11	23	39
Engineered Products and Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	30	78	46
Global Rolled Products | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	72	40	121
Transportation and Construction Solutions | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 52	$ 14	$ 8

XML

Restructuring and Other Charges - Activity and Reserve Balances for Restructuring Charges (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	$ 59	$ 93	$ 68
Cash payments	(65)	(86)	(57)
Restructuring charges	65	97	104
Other	(1)	(45)	(22)
Restructuring reserve ending balance	58	59	93
Restructuring and other charges	165	155	214
Layoff costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	50	84	48
Cash payments	(59)	(73)	(45)
Restructuring charges	64	70	97
Other	1	(31)	(16)
Restructuring reserve ending balance	56	50	84
Other exit costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance	9	9	20
Cash payments	(6)	(13)	(12)
Restructuring charges	1	27	7
Other	(2)	(14)	(6)
Restructuring reserve ending balance	2	9	9
Restructuring and other charges	69	57
Stock Awards Reversal
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 13
Other Restructuring
Restructuring Reserve [Roll Forward]
Asset retirement obligation		8
Environmental Remediation
Restructuring Reserve [Roll Forward]
Restructuring and other charges		2
Legal Costs
Restructuring Reserve [Roll Forward]
Restructuring and other charges		$ 4
Warranties Lease Terminations And Tax Indemnities
Restructuring Reserve [Roll Forward]
Restructuring and other charges			$ 5

XML

Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill gross, beginning balance		$ 5,201	$ 5,302
Accumulated impairment losses, beginning balance		(53)	(53)
Goodwill, beginning balance		5,148	5,249
Acquisitions and Divestitures			47
Impairment		(719)	0	$ (25)
Translation and other		106	(148)
Goodwill gross, ending balance	$ 5,307	5,307	5,201	5,302
Accumulated impairment losses, ending balance	(772)	(772)	(53)	(53)
Goodwill, ending balance	4,535	$ 5,148	5,249	5,249
Number of reportable segments | segment		3
Engineered Products and Solutions
Goodwill [Roll Forward]
Impairment	(719)	$ (719)
Segment reporting, goodwill	256
Global Rolled Products
Goodwill [Roll Forward]
Segment reporting, goodwill	59
Transportation and Construction Solutions
Goodwill [Roll Forward]
Impairment				(25)
Segment reporting, goodwill	18
Operating Segments | Engineered Products and Solutions
Goodwill [Roll Forward]
Goodwill gross, beginning balance		4,579	4,660
Accumulated impairment losses, beginning balance		0	0
Goodwill, beginning balance		4,579	4,660
Acquisitions and Divestitures			47
Impairment		(719)
Translation and other		89	(128)
Goodwill gross, ending balance	4,668	4,668	4,579	4,660
Accumulated impairment losses, ending balance	(719)	(719)	0	0
Goodwill, ending balance	3,949	4,579	4,660	4,660
Operating Segments | Global Rolled Products
Goodwill [Roll Forward]
Goodwill gross, beginning balance		181	201
Accumulated impairment losses, beginning balance		0	0
Goodwill, beginning balance		181	201
Acquisitions and Divestitures			0
Impairment		0
Translation and other		12	(20)
Goodwill gross, ending balance	193	193	181	201
Accumulated impairment losses, ending balance	0	0	0	0
Goodwill, ending balance	193	181	201	201
Operating Segments | Transportation and Construction Solutions
Goodwill [Roll Forward]
Goodwill gross, beginning balance		110	111
Accumulated impairment losses, beginning balance		(53)	(53)
Goodwill, beginning balance		57	58
Acquisitions and Divestitures			0
Impairment		0
Translation and other		3	(1)
Goodwill gross, ending balance	113	113	110	111
Accumulated impairment losses, ending balance	(53)	(53)	(53)	(53)
Goodwill, ending balance	60	57	58	58
Corporate
Goodwill [Roll Forward]
Goodwill gross, beginning balance		331	330
Accumulated impairment losses, beginning balance		0	0
Goodwill, beginning balance		331	330
Acquisitions and Divestitures			0
Impairment		0
Translation and other		2	1
Goodwill gross, ending balance	333	333	331	330
Accumulated impairment losses, ending balance	0	0	0	0
Goodwill, ending balance	$ 333	$ 331	$ 330	$ 330

XML

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill impairment		$ 719	$ 0	$ 25
Amortization of intangible assets		71	$ 65	67
Engineered Products and Solutions
Goodwill [Line Items]
Goodwill impairment	$ 719	719
Transportation and Construction Solutions
Goodwill [Line Items]
Goodwill impairment				$ 25
Minimum
Goodwill [Line Items]
Expected amortization for the year 2018	60	60
Expected amortization for the year 2019	60	60
Expected amortization for the year 2020	60	60
Expected amortization for the year 2021	60	60
Expected amortization for the year 2022	60	60
Maximum
Goodwill [Line Items]
Expected amortization for the year 2018	75	75
Expected amortization for the year 2019	75	75
Expected amortization for the year 2020	75	75
Expected amortization for the year 2021	75	75
Expected amortization for the year 2022	$ 75	$ 75

XML

Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,852	$ 1,762
Accumulated amortization	(897)	(806)
Indefinite-lived trade names and trademarks	32	32
Total other intangible assets	1,884	1,794
Computer software
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	789	755
Accumulated amortization	(674)	(623)
Patents and licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	110	110
Accumulated amortization	(107)	(102)
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	953	897
Accumulated amortization	$ (116)	$ (81)

XML

Acquisitions and Divestitures - 2017 Divestitures (Details) $ in Millions	1 Months Ended		3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) employee	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Net loss on divestitures of businesses											$ 57	$ 3	$ 136
Sales revenue, goods, net			$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	12,960	12,394	12,413
Restructuring and other charges											165	155	$ 214
Slim Aluminium
Business Acquisition [Line Items]
Cash expense related to divestiture of business		$ 10
Guarantee payments to third party		$ 5
Sales revenue, goods, net											$ 54	$ 165
Number of employees | employee											312
Slim Aluminium | Restructuring and Other Charges
Business Acquisition [Line Items]
Net loss on divestitures of businesses											$ 60
Latin America Extrusions (LAE)
Business Acquisition [Line Items]
Proceeds from divestiture of businesses	$ 10
Latin America Extrusions (LAE) | Divested Businesses
Business Acquisition [Line Items]
Restructuring and other charges			$ 41

XML

Acquisitions and Divestitures - 2016 Divestitures (Details)	1 Months Ended	3 Months Ended								4 Months Ended	5 Months Ended	12 Months Ended
	Apr. 30, 2016 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Apr. 29, 2016 USD ($) employee	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Disposal group, deferred gain on disposal	$ 0
Sales revenue, goods, net		$ 3,271,000,000	$ 3,236,000,000	$ 3,261,000,000	$ 3,192,000,000	$ 2,967,000,000	$ 3,138,000,000	$ 3,234,000,000	$ 3,055,000,000			$ 12,960,000,000	$ 12,394,000,000	$ 12,413,000,000
LISI MEDICAL
Business Acquisition [Line Items]
Proceeds from divestiture of businesses	102,000,000
Proceeds from divestiture of businesses net of transaction costs	99,000,000
RTI
Business Acquisition [Line Items]
Sales revenue, goods, net										$ 20,000,000	$ 309,000,000
Number of employees | employee										330
Goodwill
Business Acquisition [Line Items]
Increase (decrease) intangible assets	$ (44,000,000)

XML

Acquisitions and Divestitures - 2015 Acquisitions (Detail) $ / shares in Units, € in Millions				1 Months Ended			3 Months Ended								4 Months Ended	5 Months Ended	12 Months Ended				14 Months Ended
	Oct. 05, 2016 shares	Jul. 23, 2015 shares	Jul. 22, 2015 shares	Jul. 31, 2015 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) employee	Mar. 31, 2015 EUR (€) employee	Dec. 31, 2017 USD ($) $ / shares	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($) $ / shares	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Apr. 29, 2016 USD ($) employee	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) Tranche company	Dec. 31, 2014 USD ($) employee	Oct. 04, 2016 shares	Sep. 30, 2015 USD ($)	Sep. 30, 2015 EUR (€)	Mar. 06, 2015 $ / shares
Business Acquisition [Line Items]
Goodwill							$ 4,535,000,000				$ 5,148,000,000					$ 5,249,000,000	$ 4,535,000,000	$ 5,148,000,000	$ 5,249,000,000
Common stock conversion transaction value							0				0					870,000,000	0	0	870,000,000
Common stock sold per share (usd per share) | $ / shares									$ 35.91
Sales revenue, goods, net							$ 3,271,000,000	$ 3,236,000,000	$ 3,261,000,000	$ 3,192,000,000	$ 2,967,000,000	$ 3,138,000,000	$ 3,234,000,000	$ 3,055,000,000			12,960,000,000	12,394,000,000	12,413,000,000
Adjusted EBITDA																	$ 2,144,000,000	$ 2,063,000,000	1,894,000,000
TITAL
Business Acquisition [Line Items]
Cash paid for business acquisition					$ 204,000,000	€ 188
Business acquisition transaction cost																						$ 1,000,000	€ 1
Number of employees | employee					650	650
Goodwill					$ 118,000,000									117,000,000
Goodwill, purchase accounting adjustments														$ 1,000,000
RTI
Business Acquisition [Line Items]
Number of employees | employee															330
Goodwill																298,000,000			298,000,000
Goodwill deductible for income tax purpose					$ 0											0			$ 0
Common stock conversion transaction value				$ 870,000,000
Common stock sold per share (usd per share) | $ / shares				$ 9.96																				$ 14.48
Debt instrument, convertible, conversion price | $ / shares				$ 2.8315
Number of common stock shares issued in a part of acquisition (in shares) | shares	29,000,000	87,397,414	29,132,471	29,132,471																	87,000,000
Acquisition price per share (USD per share) | $ / shares																								$ 41
Professional fees and costs				$ 25,000,000
Professional fees and costs, after tax				$ 19,000,000
Sales revenue, goods, net															$ 20,000,000	309,000,000
Synergy from merger and acquisition, number of companies | company																			2
RTI | Convertible Notes
Business Acquisition [Line Items]
Debt instrument, convertible, conversion price | $ / shares				$ 28.1596
Number of repayment tranches | Tranche																			2
Debt instrument, amount received upon maturity per one thousand dollars in principal amount of notes held				$ 1,000
RTI | Tranche Due December 2015
Business Acquisition [Line Items]
Long-term debt due within one year				115,000,000
RTI | Tranche Due October 2019
Business Acquisition [Line Items]
Long-term debt due within one year				$ 403,000,000												403,000,000			$ 403,000,000
RTI | 1.63% Convertible Notes, Due 2019 | Convertible Notes
Business Acquisition [Line Items]
Debt instrument, convertible, conversion price | $ / shares							$ 28.1596										$ 28.1596
Conversion of notes to common stock (in shares) | shares																	14,294,000
Debt instrument, convertible, conversion rate per bond							0.0355119										0.0355119
RTI | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired																			$ 37,000,000
Weighted average amortization period of intangible asset																			20 years
Maximum | RTI
Business Acquisition [Line Items]
Adjusted EBITDA																$ 21,000,000
RTI
Business Acquisition [Line Items]
Number of employees | employee																				2,600
Sales revenue, goods, net																				$ 794,000,000

XML

Acquisitions and Divestitures - 2015 Divestiture (Detail) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2015 USD ($) employee	Dec. 31, 2015 USD ($)
Stupino Titanium Company
Business Acquisition [Line Items]
Sale generated in last annual period prior to divestiture	$ 130
Number of employees | employee	1,870
Russia
Business Acquisition [Line Items]
Net cash received		$ 11
Loss from divestitures before income tax		$ (137)

XML

Acquisitions and Divestitures - 2014 Acquisitions (Detail) - Firth Rixson - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Nov. 30, 2014
Business Acquisition [Line Items]
Contingent consideration liability	$ 0		$ 0
Contingent consideration arrangements, change in amount of contingent consideration, liability	$ 81	$ 56	$ (81)	$ (56)
Maximum
Business Acquisition [Line Items]
Contingent consideration liability					$ 150

XML

Inventories - Schedule of Inventory Components (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods	$ 669	$ 625
Work-in-process	1,349	1,144
Purchased raw materials	381	408
Operating supplies	81	76
Inventories, total	$ 2,480	$ 2,253

XML

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventories valued on a LIFO basis	$ 1,208	$ 947
Total inventories valued on an average-cost basis	$ 481	$ 371

XML

Properties, Plants, and Equipment, Net - Schedule of Properties, Plants, and Equipment, Net (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	$ 11,365	$ 10,789
Less: accumulated depreciation and amortization	6,392	6,073
Properties, plants, and equipment excluding construction work-in-progress	4,973	4,716
Construction work-in-progress	621	783
Properties, plants, and equipment, net	5,594	5,499
Land and Land Rights
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	140	135
Structures
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	2,395	2,296
Machinery and equipment
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	8,830	8,358
Operating Segments | Engineered Products and Solutions | Structures
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	784	733
Operating Segments | Engineered Products and Solutions | Machinery and equipment
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	3,054	2,728
Operating Segments | Global Rolled Products | Structures
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	1,090	1,061
Operating Segments | Global Rolled Products | Machinery and equipment
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	4,641	4,570
Operating Segments | Transportation and Construction Solutions | Structures
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	268	254
Operating Segments | Transportation and Construction Solutions | Machinery and equipment
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	777	723
Other
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, net	310	308
Other | Structures
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	253	248
Other | Machinery and equipment
Property, Plant and Equipment [Line Items]
Properties, plants, and equipment, gross	$ 358	$ 337

XML

Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term debt	$ 6,807	$ 8,048
Less: amount due within one year	1	4
Long-term debt, excluding amount due within one year	6,806	$ 8,044
6.50% Bonds, due 2018
Debt Instrument [Line Items]
Convertible notes, interest rate		6.50%
Long-term debt	0	$ 250
6.75% Notes, due 2018
Debt Instrument [Line Items]
Convertible notes, interest rate		6.75%
Long-term debt	$ 0	$ 750
5.72% Notes, due 2019
Debt Instrument [Line Items]
Convertible notes, interest rate	5.72%
Long-term debt	$ 500	750
1.63% Convertible Notes, Due 2019
Debt Instrument [Line Items]
Convertible notes, interest rate	1.63%
Long-term debt	$ 403	403
6.150% Notes, due 2020
Debt Instrument [Line Items]
Convertible notes, interest rate	6.15%
Long-term debt	$ 1,000	1,000
5.40% Notes, due 2021
Debt Instrument [Line Items]
Convertible notes, interest rate	5.40%
Long-term debt	$ 1,250	1,250
5.87% Notes, due 2022
Debt Instrument [Line Items]
Convertible notes, interest rate	5.87%
Long-term debt	$ 627	627
5.125% Notes, due 2024
Debt Instrument [Line Items]
Convertible notes, interest rate	5.125%
Long-term debt	$ 1,250	1,250
5.90% Notes, due 2027
Debt Instrument [Line Items]
Convertible notes, interest rate	5.90%
Long-term debt	$ 625	625
6.75% Bonds, due 2028
Debt Instrument [Line Items]
Convertible notes, interest rate	6.75%
Long-term debt	$ 300	300
5.95% Notes due 2037
Debt Instrument [Line Items]
Convertible notes, interest rate	5.95%
Long-term debt	$ 625	625
Iowa Finance Authority Loan, due 2042 (4.75%)
Debt Instrument [Line Items]
Convertible notes, interest rate	4.75%
Long-term debt	$ 250	250
Other
Debt Instrument [Line Items]
Other	$ (23)	$ (32)

XML

Debt - Maturities of Long-term Debt (Detail) $ in Millions	Dec. 31, 2017 USD ($)
Debt Disclosure [Abstract]
Principal amount of long-term debt maturing in year 2018	$ 1
Principal amount of long-term debt maturing in year 2019	903
Principal amount of long-term debt maturing in year 2020	1,000
Principal amount of long-term debt maturing in year 2021	1,250
Principal amount of long-term debt maturing in year 2022	$ 627

XML

Debt (Public Debt) (Detail)			1 Months Ended		2 Months Ended	3 Months Ended	12 Months Ended
	Oct. 02, 2017 shares	Jun. 19, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2014 shares	May 31, 2017 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Apr. 30, 2017 USD ($) cash_tender_offer
Debt Instrument [Line Items]
Cash paid to holders of debt instrument, net						$ 409,000,000
Common stock sold (in shares) | shares	24,022			25,000,000		12,958,767
Common stock sold per share (usd per share) | $ / shares						$ 35.91
Debt instrument, repurchase amount						$ 874,000,000
Interest expense, debt						58,000,000
Interest paid						27,000,000
Legal fees						2,000,000
Pre-tax gain on sale of common stock						167,000,000	$ 167,000,000
Interest expense (S)		$ 24,000,000					496,000,000	$ 499,000,000	$ 473,000,000
Principal amount of convertible notes			$ 8,048,000,000				6,807,000,000	$ 8,048,000,000
6.50% Bonds, due 2018
Debt Instrument [Line Items]
Convertible notes, interest rate			6.50%					6.50%
Principal amount of convertible notes			$ 250,000,000				0	$ 250,000,000
6.75% Notes, due 2018
Debt Instrument [Line Items]
Convertible notes, interest rate			6.75%					6.75%
Principal amount of convertible notes			$ 750,000,000				$ 0	$ 750,000,000
5.72% Notes, due 2019
Debt Instrument [Line Items]
Convertible notes, interest rate							5.72%
Principal amount of convertible notes			$ 750,000,000				$ 500,000,000	$ 750,000,000
6.5% Senior Notes Due 2018
Debt Instrument [Line Items]
Debt instrument, face amount		100,000,000
6.75% Senior Notes Due 2018
Debt Instrument [Line Items]
Debt instrument, face amount		345,000,000
Debt instrument redemption amount		$ 479,000,000
5.55% Notes Due February 2017
Debt Instrument [Line Items]
Convertible notes, interest rate			5.55%					5.55%
Cash paid to holders of debt instrument, net			$ 770,000,000
Principal amount of convertible notes			750,000,000					$ 750,000,000
Cash paid to holders of debt instrument, portion of interest			17,000,000
Cash paid to holders of debt instrument, portion of purchase premium			$ 3,000,000
Investment Banks
Debt Instrument [Line Items]
Number of cash tender offers | cash_tender_offer										3
Debt instrument, face amount										$ 805,000,000
Common stock sold (in shares) | shares					12,958,767
Common stock sold per share (usd per share) | $ / shares					$ 35.91
Pre-tax gain on sale of common stock					$ 167,000,000
Investment Banks | 6.50% Bonds, due 2018
Debt Instrument [Line Items]
Debt instrument, face amount										150,000,000
Investment Banks | 6.75% Notes, due 2018
Debt Instrument [Line Items]
Debt instrument, face amount										405,000,000
Investment Banks | 5.72% Notes, due 2019
Debt Instrument [Line Items]
Debt instrument, face amount										250,000,000
Interest Rate Swap
Debt Instrument [Line Items]
Proceeds from interest received						$ 8,000,000
Maximum | Investment Banks
Debt Instrument [Line Items]
Debt instrument, face amount										$ 1,000,000,000

XML

Debt (Credit Facilities) (Detail) - USD ($)		12 Months Ended
	Jul. 25, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
Debt Instrument [Line Items]
Ratio of indebtedness to consolidated EBITDA		4.50%
Ratio of indebtedness to consolidated EBITDA, after December 31, 2019		3.50%
Extension of maturity period		1 year
Maximum borrowing capacity		$ 715,000,000
Arconic
Debt Instrument [Line Items]
Line of credit facility, repayment		$ 810,000,000	$ 1,950,000,000	$ 1,890,000,000
Weighted-average interest rate		2.60%	1.90%	1.60%
Weighted-average maturity days		46 days	49 days	69 days
Maximum
Debt Instrument [Line Items]
Applicable margin on LIBOR loans		1.70%
Minimum
Debt Instrument [Line Items]
Applicable margin on LIBOR loans		0.70%
Revolving Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility, term	5 years
Revolving Credit Agreement | Prior to Amendment
Debt Instrument [Line Items]
Line of credit facility, outstanding borrowings	$ 4,000,000,000
Revolving Credit Agreement | After Amendment
Debt Instrument [Line Items]
Line of credit facility, outstanding borrowings					$ 3,000,000,000
Commercial Paper | Maximum
Debt Instrument [Line Items]
Fees paid to maintain credit facility		0.30%
Senior Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, outstanding borrowings		$ 0	$ 0
Amounts borrowed under the credit agreement		0	$ 0	$ 0
Expected Maturity Date Year 2017
Debt Instrument [Line Items]
Maximum borrowing capacity		640,000,000
Expected Maturity Date Year 2018
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 75,000,000

XML

Debt (Short-Term Borrowings) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Short-term debt (I and U)	$ 38	$ 40
Accounts payable settlement arrangements	$ 33	$ 31

XML

Debt (Commercial Paper) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Average outstanding commercial paper	$ 67,000,000	$ 127,000,000
Long-term interest rate	1.60%	1.10%	0.60%
Commercial Paper
Debt Instrument [Line Items]
Aggregate outstanding principal amount	$ 0	$ 0
Debt instrument maturity date, description	1 year

XML

Other Noncurrent Liabilities and Deferred Credits - Schedule of Other Noncurrent Liabilities and Deferred Credits (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Environmental remediation (L)	$ 253	$ 260
Income taxes (Q)	162	154
Accrued compensation and retirement costs	218	216
Contingent payment related to an acquisition (F)	0	78
Other	126	162
Other noncurrent liabilities and deferred credits	$ 759	$ 870

XML

Contingencies and Commitments - Contingencies (Detail) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) location	Dec. 31, 2017 EUR (€)	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Number of cleanup locations (more than) | location	100
Remediation reserve balance	$ 294		$ 308
Remediation reserve balance, classified as a current liability	41		48
Increase in remediation reserve	5
Accrual for environmental loss contingencies, revision in estimates	8
Increase (decrease) in reserves due to effects of foreign currency translation	1
Payments related to remediation expenses applied against the reserve	$ 26
Actual remediation fieldwork period	4 years
Total combined assessments	$ 155	€ 130
Massena West, NY
Loss Contingencies [Line Items]
Remediation reserve balance	$ 215		$ 228
Recurring Costs of Managing Hazardous Substances and Environmental Programs | Maximum
Loss Contingencies [Line Items]
Percentage of cost of goods sold	1.00%

XML

Contingencies and Commitments - Commitments (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) agreement guarantee	Dec. 31, 2015 USD ($)	Nov. 01, 2016 USD ($)
Loss Contingencies [Line Items]
Purchase obligations due in 2018	$ 861,000,000	$ 861,000,000
Purchase obligations due in 2019	176,000,000	176,000,000
Purchase obligations due in 2020	74,000,000	74,000,000
Purchase obligations due in 2021	13,000,000	13,000,000
Purchase obligations due in 2022	6,000,000	6,000,000
Purchase obligations due thereafter	5,000,000	5,000,000
Operating leases, expense		113,000,000	$ 110,000,000	$ 112,000,000
Long-term operating leases, minimum annual rentals due in 2018	108,000,000	108,000,000
Long-term operating leases, minimum annual rentals due in 2019	88,000,000	88,000,000
Long-term operating leases, minimum annual rentals due in 2020	62,000,000	62,000,000
Long-term operating leases, minimum annual rentals due in 2021	46,000,000	46,000,000
Long-term operating leases, minimum annual rentals due in 2022	38,000,000	38,000,000
Long-term operating leases, minimum annual rentals due thereafter	100,000,000	100,000,000
Guarantees of third party related to project financing	29,000,000	29,000,000
Other income, net		640,000,000	94,000,000	$ 28,000,000
Letters of credit, total amount committed	120,000,000	120,000,000
Total amount committed under outstanding surety bonds	54,000,000	54,000,000
Other Noncurrent Liabilities and Deferred Credits
Loss Contingencies [Line Items]
Combined fair value of guarantees	8,000,000	8,000,000	35,000,000
Separation Agreement
Loss Contingencies [Line Items]
Guarantees of third party related to project financing	197,000,000	197,000,000	354,000,000
Other income, net	25,000,000
Combined fair value of guarantees	1,297,000,000	1,297,000,000
Total amount committed under outstanding surety bonds	$ 25,000,000	$ 25,000,000			$ 25,000,000
Alcoa Corporation Energy Supply Contracts Guarantee
Loss Contingencies [Line Items]
Guarantees of third party related to project financing			$ 50,000,000
Guarantor obligations, number of contracts | guarantee			2
Alcoa Corporation Environmental Liabilities Guarantee
Loss Contingencies [Line Items]
Guarantees of third party related to project financing			$ 53,000,000
Purchase Agreement
Loss Contingencies [Line Items]
Long-term purchase commitment, period			1 year
Guarantees of third party related to project financing			$ 245,000,000
Number of long term energy supply agreements | agreement			2
Alcoa Corporation Workers Compensation Claims
Loss Contingencies [Line Items]
Letters of credit, total amount committed					62,000,000
Alcoa Corporation Equipment Leases And Energy Contracts
Loss Contingencies [Line Items]
Letters of credit, total amount committed					$ 103,000,000

XML

Other Income, Net - Schedule of Other Expenses (Income), Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Income and Expenses [Abstract]
Equity income	$ 0	$ (7)	$ 0
Interest income	(19)	(16)	(16)
Foreign currency (gains) losses, net	(5)	(4)	51
Net (gain) loss from asset sales	(513)	11	(42)
Net loss (gain) on mark-to-market derivative contracts	0	1	(3)
Other, net	(103)	(79)	(18)
Other income, net	$ (640)	$ (94)	$ (28)

XML

Other Income, Net - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			12 Months Ended
	Feb. 28, 2017	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Nov. 01, 2016
Other Non operating Income Expense [Line Items]
Net loss (gain) from asset sales					$ 513	$ 156	$ 74
Pre-tax gain on sale of common stock			$ 167		167
Total amount committed under outstanding surety bonds		$ 54			54
Other, net					103	79	18
Firth Rixson
Other Non operating Income Expense [Line Items]
Contingent consideration arrangements, change in amount of contingent consideration, liability		(81)		$ (56)	81	56
Business combination, post acquisition closing adjustment						$ (20)
Separation Agreement
Other Non operating Income Expense [Line Items]
Total amount committed under outstanding surety bonds		$ 25			25			$ 25
Alcoa Corporation
Other Non operating Income Expense [Line Items]
Net loss (gain) from asset sales					$ 351
Pre-tax gain on sale of common stock	$ 351
Sherwin, TX Site
Other Non operating Income Expense [Line Items]
Net loss (gain) from asset sales							19
China Rolling Mill Equity Investment
Other Non operating Income Expense [Line Items]
Net loss (gain) from asset sales							$ 19

XML

Cash Flow Information - Schedule of Cash Paid for Interest and Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Interest, net of amount capitalized	$ 508	$ 524	$ 487
Income taxes, net of amount refunded	$ 118	$ 324	$ 345

XML

Cash Flow Information - Schedule of Cash Paid for Acquisitions Including Non-Controlling Interest (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Assets acquired	$ 0	$ 0	$ 2,003
Liabilities assumed	0	0	(868)
Equity issued	0	0	(870)
Working capital adjustment	0	(10)	0
Increase in Arconic’s shareholders’ equity	0	0	(60)
Cash paid	0	(10)	205
Less: cash acquired	0	0	302
Net cash paid	$ 0	$ (10)	$ (97)

XML

Cash Flow Information - Additional Information (Detail) $ / shares in Units, $ in Millions						1 Months Ended					3 Months Ended	12 Months Ended			14 Months Ended
	Oct. 02, 2017 $ / shares shares	Oct. 05, 2016 $ / shares shares	Aug. 31, 2016 shares	Jul. 23, 2015 shares	Jul. 22, 2015 shares	Aug. 31, 2016 shares	Aug. 31, 2016 USD ($) shares	Aug. 30, 2016 USD ($)	Jul. 31, 2015 USD ($) shares	Sep. 30, 2014 shares	Jun. 30, 2017 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Oct. 04, 2016 shares	Dec. 31, 2014 shares
Schedule Of Common Stock [Line Items]
Sales of investments												$ 890	$ 280	$ 40
Proceeds from sale of company-owned life insurance policies													457
Proceeds from Divestiture of Businesses												$ (9)	$ 692	$ 112
Depository shares sold (in shares) | shares	24,022									25,000,000	12,958,767
Interest in preferred stock	0.10									0.10
Conversion of stock, shares converted (in shares) | shares	31,420
Reverse stock split ratio		0.3333
Common stock share outstanding (in shares) | shares		400,000,000										481,416,537	438,519,780	1,310,160,141	1,300,000,000.0	1,216,663,661
Common stock par value (usd per share) | $ / shares		$ 1
Decrease in common stock due to reverse stock split													$ (877)
Treasury stock retirement (in shares) | shares			25,000,000			76,000,000	76,000,000
Retirement of treasury stock								$ 76					0
Increase in additional paid in capital due to reverse stock split													877
Common stock conversion transaction value												$ 0	0	$ 870
Common stock
Schedule Of Common Stock [Line Items]
Retirement of treasury stock							$ 76	76					76
Number of common stock shares issued in a part of acquisition (in shares) | shares														87,397,414
Additional capital
Schedule Of Common Stock [Line Items]
Retirement of treasury stock							$ 2,563	$ 2,563					2,563
RTI
Schedule Of Common Stock [Line Items]
Common stock conversion transaction value									$ 870
Number of common stock shares issued in a part of acquisition (in shares) | shares		29,000,000		87,397,414	29,132,471				29,132,471						87,000,000
Remmele Medical
Schedule Of Common Stock [Line Items]
Proceeds from Divestiture of Businesses													(102)
Alcoa Corporation
Schedule Of Common Stock [Line Items]
Sales of investments													145
Proceeds from Divestiture of Businesses													120
Alcoa Corporation | Electricity Contract
Schedule Of Common Stock [Line Items]
Outstanding notes held by Investment banks, including accrued and unpaid interest											$ 465
Mandatory convertible preferred stock
Schedule Of Common Stock [Line Items]
Depository shares sold (in shares) | shares	24,975,978
Interest in preferred stock	0.1
Preferred stock conversion price (in usd per share) | $ / shares	$ 1.56996
Conversion of stock, shares converted (in shares) | shares	39,211,286
Exchange Traded Fixed Income and Equity Securities
Schedule Of Common Stock [Line Items]
Sales of investments													$ 130

XML

Segment and Geographic Area Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 segment
Segment Reporting Information [Line Items]
Number of reportable segments	3
Sales Revenue, Segment | Product Concentration Risk
Segment Reporting Information [Line Items]
Sales percentage	75.00%

XML

Segment and Geographic Area Information - Schedule of Operating Results of Arconic's Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total sales	$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	$ 12,960	$ 12,394	$ 12,413
Depreciation and amortization									523	504	479
Adjusted EBITDA									2,144	2,063	1,894
Capital expenditures									543	689
Goodwill	4,202				4,817				4,202	4,817
Total assets	15,499				15,415				15,499	15,415
Operating Segments
Segment Reporting Information [Line Items]
Total sales									13,060	12,512	12,602
Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales									148	118	125
Total sales									(148)	(118)	(125)
Third-Party Sales | Operating Segments
Segment Reporting Information [Line Items]
Segment Reporting Information Revenues From External Customers									12,912	12,394	12,477
Engineered Products and Solutions
Segment Reporting Information [Line Items]
Depreciation and amortization									268	255	233
Adjusted EBITDA									1,224	1,195	1,111
Capital expenditures									308	333
Goodwill	3,949				4,579				3,949	4,579
Total assets	10,252				10,542				10,252	10,542
Engineered Products and Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total sales									5,935	5,728	5,342
Engineered Products and Solutions | Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales									0	0	0
Engineered Products and Solutions | Third-Party Sales | Operating Segments
Segment Reporting Information [Line Items]
Segment Reporting Information Revenues From External Customers									5,935	5,728	5,342
Global Rolled Products
Segment Reporting Information [Line Items]
Depreciation and amortization									205	201	203
Adjusted EBITDA									599	577	512
Capital expenditures									178	293
Goodwill	193				181				193	181
Total assets	4,179				3,891				4,179	3,891
Global Rolled Products | Operating Segments
Segment Reporting Information [Line Items]
Total sales									5,140	4,982	5,378
Global Rolled Products | Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales									148	118	125
Global Rolled Products | Third-Party Sales | Operating Segments
Segment Reporting Information [Line Items]
Segment Reporting Information Revenues From External Customers									4,992	4,864	5,253
Transportation and Construction Solutions
Segment Reporting Information [Line Items]
Depreciation and amortization									50	48	43
Adjusted EBITDA									321	291	271
Capital expenditures									57	63
Goodwill	60				57				60	57
Total assets	$ 1,068				$ 982				1,068	982
Transportation and Construction Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total sales									1,985	1,802	1,882
Transportation and Construction Solutions | Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales									0	0	0
Transportation and Construction Solutions | Third-Party Sales | Operating Segments
Segment Reporting Information [Line Items]
Segment Reporting Information Revenues From External Customers									$ 1,985	$ 1,802	$ 1,882

XML

Segment and Geographic Area Information - Schedule of Reconciliation of Certain Segment Information to Consolidated Totals (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales revenue, goods, net	$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	$ 12,960	$ 12,394	$ 12,413
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales revenue, goods, net									13,060	12,512	12,602
Intersegment Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales revenue, goods, net									(148)	(118)	(125)
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales revenue, goods, net									$ 48	$ 0	$ (64)

XML

Segment and Geographic Area Information - Schedule of Segment EBITDA to Consolidated Net (Loss) Income Attributable to Arconic (Detail) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
	Jun. 19, 2017	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Combined segment adjusted EBITDA										$ 2,144	$ 2,063	$ 1,894
Impairment of goodwill										(719)	0	(25)
Restructuring and other charges										(165)	(155)	(214)
Operating income										326	819	628
Interest expense	$ (24)									(496)	(499)	(473)
Other income, net										640	94	28
Income from continuing operations before income taxes										470	414	183
Provision for income taxes										(544)	(1,476)	(339)
Discontinued operations										0	121	(165)
Net loss attributable to Arconic		$ (727)	$ 119	$ 212	$ 322	$ (1,258)	$ 166	$ 135	$ 16	(74)	(941)	(322)
Other
Segment Reporting Information [Line Items]
Depreciation and amortization										(551)	(535)	(508)
Impairment of goodwill										(719)	0	(25)
Restructuring and other charges										(165)	(155)	(214)
Impact of LIFO										(110)	(18)	101
Metal price lag										72	27	(175)
Corporate expense										(274)	(454)	(371)
Other										(71)	(109)	(74)
Operating income										326	819	628
Interest expense										(496)	(499)	(473)
Other income, net										640	94	28
Income from continuing operations before income taxes										470	414	183
Provision for income taxes										(544)	(1,476)	(339)
Discontinued operations										0	121	(165)
Net income attributable to noncontrolling interest										$ 0	$ 0	$ (1)

XML

Segment and Geographic Area Information - Schedule of Segment Reporting Information to Consolidated Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Assets By Segment [Line Items]
Total assets	$ 18,718	$ 20,038
Cash and cash equivalents	2,150	1,863	$ 1,919	$ 1,877
Corporate goodwill	4,535	5,148	$ 5,249
Corporate fixed assets, net	5,594	5,499
LIFO reserve	481	371
Investment in common stock of Alcoa Corporation	0	1,020
Operating Segments
Schedule Of Assets By Segment [Line Items]
Total assets	15,499	15,415
Other
Schedule Of Assets By Segment [Line Items]
Cash and cash equivalents	2,150	1,863
Deferred income taxes	743	1,234
Corporate goodwill	333	331
Corporate fixed assets, net	310	308
LIFO reserve	(481)	(371)
Fair value of derivative contracts	91	24
Investment in common stock of Alcoa Corporation	0	1,020
Other	$ 73	$ 214

XML

Segment and Geographic Area Information - Sales by Major Product Grouping (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Product Information [Line Items]
Sales revenue, goods, net	$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	$ 12,960	$ 12,394	$ 12,413
Flat-rolled aluminum
Product Information [Line Items]
Sales revenue, goods, net									4,992	4,864	5,253
Fastening systems and rings
Product Information [Line Items]
Sales revenue, goods, net									2,102	2,060	2,168
Investment castings
Product Information [Line Items]
Sales revenue, goods, net									1,983	1,870	1,812
Other extruded and forged products
Product Information [Line Items]
Sales revenue, goods, net									1,565	1,495	1,332
Architectural aluminum systems
Product Information [Line Items]
Sales revenue, goods, net									1,065	1,010	951
Aluminum wheels
Product Information [Line Items]
Sales revenue, goods, net									805	689	790
Other
Product Information [Line Items]
Sales revenue, goods, net									$ 448	$ 406	$ 107

XML

Segment and Geographic Area Information - Schedule of Geographic Information for Sales (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net	$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	$ 12,960	$ 12,394	$ 12,413
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									8,167	7,823	8,044
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									965	930	802
Hungary
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									739	619	622
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									721	711	698
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									615	582	565
Russia
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									500	433	455
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									309	284	264
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									285	250	297
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									261	262	180
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									141	145	138
Italy
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									37	127	139
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales revenue, goods, net									$ 220	$ 228	$ 209

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Segment and Geographic Area Information - Schedule of Geographic Information for Long-Lived Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 5,594	$ 5,499
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	4,005	3,966
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	347	336
Russia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	276	295
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	259	232
Hungary
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	227	194
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	159	118
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	88	64
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	63	58
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	62	97
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 108	$ 139

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Preferred and Common Stock - Additional Information (Detail)						1 Months Ended					3 Months Ended											12 Months Ended			14 Months Ended
	Oct. 02, 2017 $ / shares shares	Oct. 05, 2016 $ / shares shares	Aug. 31, 2016 shares	Jul. 23, 2015 shares	Jul. 22, 2015 shares	Aug. 31, 2016 shares	Aug. 31, 2016 USD ($) shares	Aug. 30, 2016 USD ($)	Jul. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Sep. 30, 2017 $ / shares	Jun. 30, 2017 $ / shares shares	Mar. 31, 2017 $ / shares	Dec. 31, 2016 USD ($) $ / shares shares	Sep. 30, 2016 $ / shares	Jun. 30, 2016 $ / shares	Mar. 31, 2016 $ / shares	Sep. 30, 2015 $ / shares	Jun. 30, 2015 $ / shares	Mar. 31, 2015 $ / shares	Dec. 31, 2017 USD ($) class_of_stock $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Oct. 04, 2016 shares	Dec. 31, 2014 shares
Class of Stock [Line Items]
Preferred stock, number of classes | class_of_stock																						2
Preferred stock par value (usd per share) | $ / shares										$ 1
Public offering of preferred stock										$ 1,250,000,000
Depository shares sold (in shares) | shares	24,022									25,000,000			12,958,767
Proceeds from public offering										$ 1,213,000,000
Interest in preferred stock	0.10									0.10
Conversion of stock, shares converted (in shares) | shares	31,420
Reverse stock split ratio		0.3333
Common stock outstanding (in shares) | shares		400,000,000									481,416,537				438,519,780							481,416,537	438,519,780	1,310,160,141	1,300,000,000.0	1,216,663,661
Common stock, par value per share (usd pe share) | $ / shares		$ 1
Common stock decrease																							$ 877,000,000
Additional capital increase (decrease)																							877,000,000
Common stock authorized (in shares) | shares		600,000,000																							1,800,000,000
Treasury stock retirement (in shares) | shares			25,000,000			76,000,000	76,000,000
Retirement of treasury stock								$ 76,000,000															0
Treasury stock, value											$ 0				$ 0							$ 0	$ 0
Common stock issued (in shares) | shares											481,416,537											481,416,537
Dividends paid per share (usd per share) | $ / shares											$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09			$ 0.36
Common stock, dividends yield (usd per share) | $ / shares											$ 0.06											$ 0.24	$ 0.36	$ 0.12
Document Fiscal Year Focus																						2017
Common stock reserved for future issuance (in shares) | shares											47,000,000											47,000,000
Common stock, number of shares available for grant | shares											43,000,000											43,000,000
Stock based compensation expense, before tax																						$ 54,000,000	$ 76,000,000	$ 77,000,000
Stock based compensation expense, after tax																						$ 36,000,000	$ 51,000,000	$ 51,000,000
Stock based compensation expense, stock awards percentage																						85.00%	80.00%	80.00%
Unrecognized compensation costs on non-vested stock option awards (pretax)											$ 0				$ 0							$ 0	$ 0	$ 0
Unrecognized compensation costs on non-vested stock option grants (pretax)											43,000,000											$ 43,000,000
Unrecognized compensation costs on non-vested awards, weighted average period of recognition in years																						1 year 7 months 6 days
Expense related to the acceleration of expense related to retirement-eligible employees																						$ 15,000,000	$ 19,000,000	$ 15,000,000
Weighted average FMV per award, Granted (in usd per share) | $ / shares																						$ 21.86
Average risk-free interest rate																						2.40%
Share-based compensation arrangement by share-based payment award, options, grants in period, weighted average grant date fair value | $ / shares																						$ 6.26	$ 4.78	$ 10.07
Volatility																						38.10%	44.50%	36.50%
Dividend yield																						1.20%
Annual pre- and post-vesting forfeitures																						6.00%
Exercise behavior																						59.00%
Life (years)																						5 years 10 months 24 days
Number of options, Outstanding weighted average remaining contractual life																						5 years 3 months 29 days
Total intrinsic value of options outstanding											$ 53,000,000											$ 53,000,000
Stock options vested (in shares) | shares																						7,400,000
Stock option exercisable | shares																						8,900,000
Weighted average remaining contractual life, vested and exercisable																						4 years 1 month 28 days
Weighted average exercise price, vested and exercisable (in usd per share) | $ / shares											$ 25.90											$ 25.90
Total intrinsic value of options vested and exercisable											$ 26,000,000											$ 26,000,000
Proceeds from exercise of employee stock options																						50,000,000	$ 4,000,000	$ 25,000,000
Total tax benefit realized from these exercises																						4,000,000	0	6,000,000
Total intrinsic value of options exercised																						13,000,000	1,000,000	19,000,000
Restructuring and Other Charges
Class of Stock [Line Items]
Stock based compensation expense, before tax																						$ (13,000,000)
Stock Options
Class of Stock [Line Items]
Stock options granted, vesting period																						3 years
Share-based compensation arrangement by share-based payment award, expiration period																						10 years
Stock option exercisable | shares																						2,000,000
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Stock options granted, contractual term																						3 years
Share-based compensation arrangement by share-based payment award, award performance period																						3 years
Performance Shares
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award performance period																						3 years
Weighted average FMV per award, Granted (in usd per share) | $ / shares																						$ 21.99
Average risk-free interest rate																						1.50%
Volatility																						38.00%
RTI
Class of Stock [Line Items]
Number of common stock shares issued in a part of acquisition (in shares) | shares		29,000,000		87,397,414	29,132,471				29,132,471																87,000,000
Number of shares to be issued upon conversion | $ / shares											$ 14,294,000											$ 14,294,000
Debt instrument, convertible, conversion price | $ / shares									$ 2.8315
RTI | Convertible Notes
Class of Stock [Line Items]
Debt instrument, convertible, conversion price | $ / shares									$ 28.1596
Debt instrument, amount received upon maturity per one thousand dollars in principal amount of notes held									$ 1,000
RTI | Tranche Due December 2015
Class of Stock [Line Items]
Long-term debt due within one year									115,000,000
RTI | Tranche Due October 2019
Class of Stock [Line Items]
Long-term debt due within one year									$ 403,000,000															$ 403,000,000
RTI | 1.63% Convertible Notes, Due 2019 | Convertible Notes
Class of Stock [Line Items]
Debt instrument, convertible, conversion rate per bond											0.0355119											0.0355119
Debt instrument, convertible, conversion price | $ / shares											$ 28.1596											$ 28.1596
Common stock
Class of Stock [Line Items]
Retirement of treasury stock							$ 76,000,000	76,000,000															76,000,000
Number of common stock shares issued in a part of acquisition (in shares) | shares																								87,397,414
Additional capital
Class of Stock [Line Items]
Retirement of treasury stock							$ 2,563,000,000	$ 2,563,000,000															$ 2,563,000,000
Class B Mandatory Convertible Preferred Stock
Class of Stock [Line Items]
Percentage ownership										5.375%
Mandatory convertible preferred stock
Class of Stock [Line Items]
Depository shares sold (in shares) | shares	24,975,978
Preferred stock liquidation preference (usd per share) | $ / shares										$ 500
Preferred shares (in shares) | shares										2,500,000
Interest in preferred stock	0.1
Preferred stock conversion price (in usd per share) | $ / shares	$ 1.56996
Conversion of stock, shares converted (in shares) | shares	39,211,286
Preferred Class A
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares											660,000											660,000
Preferred stock par value (usd per share) | $ / shares											$ 100											$ 100
Preferred stock dividend declared (usd per share) | $ / shares																						$ 3.75	$ 3.75	$ 3.75
Preferred stock, shares outstanding (in shares) | shares											546,024				546,024							546,024	546,024
Preferred Class B
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares											10,000,000											10,000,000
Preferred stock par value (usd per share) | $ / shares											$ 1											$ 1
Preferred stock dividend declared (usd per share) | $ / shares																						$ 20.1563	$ 26.875	$ 26.8750
Preferred stock, shares outstanding (in shares) | shares											0				2,500,000							0	2,500,000
Preferred stock, dividends, per share, cash paid | $ / shares																						$ 20.1563
Share-based Compensation Award, Tranche One | Stock Options
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%
Share-based Compensation Award, Tranche Two | Stock Options
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%
Share-based Compensation Award, Tranche Three | Stock Options
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%
Twenty Seventeen Awards | Performance Shares
Class of Stock [Line Items]
Stock options granted, vesting period																						3 years
Twenty Fifteen And Twenty Sixteen Awards | Share-based Compensation Award, Tranche One | Performance Shares
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%
Twenty Fifteen And Twenty Sixteen Awards | Share-based Compensation Award, Tranche Two | Performance Shares
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%
Twenty Fifteen And Twenty Sixteen Awards | Share-based Compensation Award, Tranche Three | Performance Shares
Class of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage																						33.33%

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Preferred and Common Stock - Schedule of Share Activity (Detail) - shares			1 Months Ended		12 Months Ended
	Oct. 05, 2016	Aug. 31, 2016	Aug. 31, 2016	Aug. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock, beginning balance (in shares)					0	81,051,103	87,150,169
Common stock outstanding, beginning balance (in shares)	1,300,000,000.0				438,519,780	1,310,160,141	1,216,663,661
Treasury stock retirement (in shares)		(25,000,000)	(76,000,000)	(76,000,000)
Treasury stock, ending balance (in shares)					0	0	81,051,103
Common stock outstanding, ending balance (in shares)	400,000,000				481,416,537	438,519,780	1,310,160,141
Treasury stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued for stock-based compensation plans (in shares)						5,219,660	6,099,066
Treasury stock retirement (in shares)						(75,831,443)
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issued for stock-based compensation plans (in shares)					3,654,051	5,302,128	6,099,066
Number of common stock shares issued in a part of acquisition (in shares)							87,397,414
Reverse stock split (in shares)						(876,942,489)
Conversion of convertible notes (in shares)					39,242,706

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Preferred and Common Stock - Schedule of Activity for Stock Options and Stock Awards (Detail) shares in Thousands	12 Months Ended
	Dec. 31, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Exercised (in shares)	(8,900)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of awards, Outstanding beginning of year (in shares)	8,000
Number of awards, Granted (in shares)	3,000
Number of awards, Exercised (in shares)	0
Number of awards, Converted (in shares)	(2,000)
Number of awards, Expired or forfeited (in shares)	(2,000)
Number of awards, Performance share adjustment (in shares)	0
Number of awards, Outstanding end of year (in shares)	7,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average FMV per award, Outstanding beginning of year (in usd per share) | $ / shares	$ 22.26
Weighted average FMV per award, Granted (in usd per share) | $ / shares	21.86
Weighted average FMV per award, Exercised (in usd per share) | $ / shares	0.00
Weighted average FMV per award, Converted (in usd per share) | $ / shares	24.95
Weighted average FMV per award, Expired or forfeited (in usd per share) | $ / shares	21.26
Weighted average FMV per award, Performance share adjustment (in usd per share) | $ / shares	21.48
Weighted average FMV per award, Outstanding, end of year (in usd per share) | $ / shares	$ 21.49
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options, Outstanding beginning of year (in shares)	13,000
Number of options, Granted (in shares)	2,000
Number of options, Exercised (in shares)	(2,000)
Number of options, Converted (in shares)	0
Number of options, Expired or forfeited (in shares)	(2,000)
Number of options, Performance share adjustment (in shares)	0
Number of options, Outstanding end of year (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, Outstanding beginning of year (in usd per share) | $ / shares	$ 24.14
Weighted average exercise price, granted (in usd per share) | $ / shares	21.13
Weighted average exercise price, exercised (in usd per share) | $ / shares	20.65
Weighted average exercise price, Converted (in usd per share) | $ / shares	0.00
Weighted average exercise price, expired or forfeited (in usd per share) | $ / shares	25.99
Weighted average exercise price, Performance share adjustment (in usd per share) | $ / shares	0.00
Weighted average exercise price Outstanding, end of year (in usd per share) | $ / shares	$ 23.94

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Earnings Per Share - Reconciliation of Information Used to Compute Basic and Diluted EPS (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net loss from continuing operations attributable to Arconic	$ (74)	$ (1,062)	$ (156)
Net income from continuing operations attributable to noncontrolling interests	0	0	(1)
Less: preferred stock dividends declared	(53)	(69)	(69)
Loss from continuing operations available to Arconic common shareholders	(127)	(1,131)	(226)
Income (loss) from discontinued operations after income taxes and noncontrolling interests	0	121	(165)
Net loss available to Arconic common shareholders—basic	(127)	(1,010)	(391)
Add: interest expense related to convertible notes		0	0	$ 0
Add: dividends related to mandatory convertible preferred stock		0	0	$ 0
Net loss available to Arconic common shareholders—diluted	$ (127)	$ (1,010)	$ (391)
Average shares outstanding-basic (in shares)	451	438	420
Stock options (in shares)		0	0	0
Stock and performance awards (in shares)	0	0	0
Mandatory convertible preferred stock (in shares)		0	0	0
Convertible notes (in shares)		0	0	0
Average shares outstanding-diluted (in shares)	451	438	420

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Earnings Per Share - Additional Information (Detail) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Weighted Average
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)			5
Mandatory Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	39	39	26
Shares that would have been included in diluted earnings per share calculation (in shares)	30	28	26
Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	14	14
Shares that would have been included in diluted earnings per share calculation (in shares)	14	10	5
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	11	13	11
Shares that would have been included in diluted earnings per share calculation (in shares)	1	1	1
Weighted average exercise price of options (usd per share)	$ 33.32	$ 26.93	$ 38.25
Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	7	8	7
Shares that would have been included in diluted earnings per share calculation (in shares)	5	4	4
Equity Unit Purchase Agreements
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive securities (in shares)	3	10	9

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Income Taxes - Components of Income from Continuing Operations Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ 500	$ 84	$ 124
Foreign	(30)	330	59
Income from continuing operations before income taxes	$ 470	$ 414	$ 183

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Income Taxes - Schedule of Provision for Income Taxes on Income from Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ 0	$ 0	$ 0
Foreign	98	133	115
State and local	(2)	1	(1)
Current provision for income taxes, total	96	134	114
Deferred:
Federal	489	1,208	196
Foreign	37	136	29
State and local	(78)	(2)	0
Deferred provision for income taxes, total	448	1,342	225
Total	$ 544	$ 1,476	$ 339

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Income Taxes - Additional Information (Detail) - USD ($)		3 Months Ended		12 Months Ended
	Jul. 12, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Tax benefit (charge) realized from exercise of employee stock options				$ (1,000,000)	$ 0	$ 2,000,000
Unamortized tax-deductible goodwill resulting from intercompany stock sales and reorganizations				$ 24,000,000
Unamortized tax-deduction rate on goodwill				25.00%
Tax cuts and jobs act of 2017, incomplete accounting, provisional income tax expense (benefit)		$ 272,000,000
Percentage of temporary tax differences that reverse within the carryforward period					30.00%
Percentage of deferred tax asset exclusive of reversing temporary differences					70.00%
Increase (decrease) to valuation allowance			$ 1,267,000,000	$ 831,000,000	$ 772,000,000	180,000,000
Valuation allowance		2,584,000,000	1,940,000,000	2,584,000,000	1,940,000,000	$ 1,291,000,000	$ 1,151,000,000
Tax credit carryforward, valuation allowance		379,000,000		379,000,000
Net deferred tax assets other		(24,000,000)	(164,000,000)	$ (24,000,000)	$ (164,000,000)
Percentage of tax rate decreased				52.50%	(15.70%)	(1.00%)
Percentage of the effect of unrecognized tax benefit, if recorded				15.00%	6.00%	7.00%
Interest or penalties recognized				$ 1,000,000	$ 0	$ 0
Income related to accrued interest and penalties				2,000,000	0	1,000,000
Amount accrued for payment of interest and penalties		2,000,000	2,000,000	2,000,000	2,000,000
Alcoa Corporation
Income Tax Contingency [Line Items]
Deferred tax assets, tax credit carryforwards, foreign, expired during period					302,000,000
Discrete income tax charge for valuation allowances					1,267,000,000
Net deferred tax assets other			(2,000,000)		(2,000,000)
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Increase (decrease) to valuation allowance				98,000,000
Valuation allowance		750,000,000		750,000,000
Foreign Tax Authority
Income Tax Contingency [Line Items]
Foreign tax credits carry forward period	10 years
Tax credit carryforward, valuation allowance		302,000,000		302,000,000		134,000,000
Deferred tax assets, tax credit carryforwards, foreign, expired during period				57,000,000	128,000,000	15,000,000
Iceland And Suriname
Income Tax Contingency [Line Items]
Discrete income tax charge for valuation allowances						141,000,000
Suriname
Income Tax Contingency [Line Items]
Valuation allowance						$ 85,000,000
Suriname | Minimum
Income Tax Contingency [Line Items]
Foreign tax credits expiry period						2016
Suriname | Maximum
Income Tax Contingency [Line Items]
Foreign tax credits expiry period						2022
Iceland
Income Tax Contingency [Line Items]
Valuation allowance						$ 56,000,000
Iceland | Minimum
Income Tax Contingency [Line Items]
Foreign tax credits expiry period						2017
Iceland | Maximum
Income Tax Contingency [Line Items]
Foreign tax credits expiry period						2023
Internal Revenue Service IRS | Alcoa Corporation
Income Tax Contingency [Line Items]
Net deferred tax assets			925,000,000		925,000,000
Luxembourg
Income Tax Contingency [Line Items]
Valuation allowance			280,000,000		280,000,000
Discrete income tax charge for valuation allowances					42,000,000
Luxembourg | Alcoa Corporation
Income Tax Contingency [Line Items]
Net deferred tax assets			42,000,000		42,000,000
Federal Tax Services of Russia
Income Tax Contingency [Line Items]
Net deferred tax assets			19,000,000		19,000,000
Canada Revenue Agency
Income Tax Contingency [Line Items]
Net deferred tax assets			20,000,000		20,000,000
Australia
Income Tax Contingency [Line Items]
Valuation allowance			93,000,000		93,000,000
Tax Authority, Spain
Income Tax Contingency [Line Items]
Valuation allowance			$ 163,000,000		$ 163,000,000
Tax Authority, Spain | Foreign Tax Authority
Income Tax Contingency [Line Items]
Increase (decrease) to valuation allowance				675,000,000
Excess Foreign Tax Credits
Income Tax Contingency [Line Items]
Tax credit carryforward, valuation allowance		23,000,000		23,000,000
Tax Credits, Other Adjustments
Income Tax Contingency [Line Items]
Tax credit carryforward, valuation allowance		$ (14,000,000)		$ (14,000,000)

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Income Taxes - Reconciliation of U.S. Federal Statutory Rate to Arconic's Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	35.00%	35.00%	35.00%
Taxes on foreign operations	(7.50%)	(10.20%)	2.50%
Federal benefit of state tax	3.10%	0.40%	0.30%
Permanent differences on restructuring and other charges and asset disposals	(167.40%)	(107.80%)	3.60%
Non-deductible acquisition costs	0.30%	8.40%	7.10%
Statutory tax rate and law changes	52.50%	(15.70%)	(1.00%)
Tax holidays	(3.00%)	(0.80%)	(3.90%)
Tax credits	(0.70%)	(1.20%)	(2.80%)
Changes in valuation allowances	137.90%	426.80%	145.80%
Impairment of goodwill	53.50%	0.00%	4.80%
Company-owned life insurance/split-dollar net premiums	(0.00%)	23.00%	(3.00%)
Changes in uncertain tax positions	10.10%	2.10%	(2.20%)
Other	1.90%	(3.50%)	(1.00%)
Effective tax rate	115.70%	356.50%	185.20%

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Income Taxes - Schedule of Components of Net Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Deferred tax assets, depreciation	$ 31	$ 15
Deferred tax assets, employee benefits	936	1,382
Deferred tax assets, loss provisions	134	181
Deferred tax assets, deferred income	19	20
Deferred tax assets, tax loss carryforwards	3,305	1,540
Deferred tax assets, tax credit carryforwards	638	652
Deferred tax assets, other	24	164
Deferred tax assets, gross	5,087	3,954
Valuation allowance	(2,584)	(1,940)	$ (1,291)	$ (1,151)
Deferred tax assets, net	2,503	2,014
Deferred tax liabilities, depreciation	693	817
Deferred tax liabilities, employee benefits	23	8
Deferred tax liabilities, loss provisions	14	1
Deferred tax liabilities, deferred expense	1,144	74
Deferred tax liabilities, tax loss carryforwards	0	0
Deferred tax liabilities, tax credit carryforwards	0	0
Deferred tax liabilities, other	33	19
Deferred tax liabilities, gross	1,907	919
Deferred tax liabilities, valuation allowance	0	0
Deferred tax liabilities, net	$ 1,907	$ 919

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Income Taxes - Schedule of Expiration Periods of Deferred Tax Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	$ 3,305
Tax credit carryforwards	638
Other	1,144
Valuation allowance	(2,584)	$ (1,940)	$ (1,291)	$ (1,151)
Deferred tax assets, net	2,503	$ 2,014
Expires within 10 years
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	81
Tax credit carryforwards	531
Other	0
Valuation allowance	(467)
Deferred tax assets, net	145
Expires within 11-20 years
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	781
Tax credit carryforwards	97
Other	0
Valuation allowance	(646)
Deferred tax assets, net	232
No expiration
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	2,443
Tax credit carryforwards	10
Other	84
Valuation allowance	(1,376)
Deferred tax assets, net	1,161
Other
Tax Credit Carryforward [Line Items]
Tax loss carryforwards	0
Tax credit carryforwards	0
Other	1,060
Valuation allowance	(95)
Deferred tax assets, net	$ 965

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Income Taxes - Schedule of Changes in Valuation Allowance (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Balance at beginning of year		$ 1,940	$ 1,291	$ 1,151
Increase to allowance	$ 1,267	831	772	180
Release of allowance		(246)	(209)	(42)
Acquisitions and divestitures (F)		(1)	(1)	29
Tax apportionment, tax rate and tax law changes		(24)	106	(15)
Foreign currency translation		84	(19)	(12)
Balance at end of year	$ 1,940	$ 2,584	$ 1,940	$ 1,291

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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Excluding Interest and Penalties) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 28	$ 18	$ 7
Additions for tax positions of the current year	23	12	0
Additions for tax positions of prior years	27	0	14
Reductions for tax positions of prior years	0	0	(2)
Settlements with tax authorities	0	(1)	0
Expiration of the statute of limitations	(5)	(1)	(1)
Foreign currency translation	0	0	0
Balance at end of year	$ 73	$ 28	$ 18

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Receivables - Additional Information (Detail)		12 Months Ended			69 Months Ended
	Mar. 30, 2012 USD ($)	Dec. 31, 2017 USD ($) financial_institution	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 USD ($)
Schedule Of Financial Receivables [Line Items]
Number of arrangement with different financial institution to sell customer receivables | financial_institution		3
Funding of customer receivables sold		$ 0	$ 100,000,000
Sale of customer receivables	$ 304,000,000
Cash received for receivables	50,000,000
Deferred purchase price receivable	$ 254,000,000	187,000,000	83,000,000
Net cash funding received during the period		300,000,000
Amount of cash draws under arrangement during the period		2,358,000,000
Amount of cash repayments under arrangement during the period		(2,058,000,000)		$ 0
Amount of cash draws under arrangement since inception		600,000,000	500,000,000
Amount of cash repayments under arrangement since inception		(600,000,000)	(400,000,000)
Gross cash outflows from deferred purchased receivables		5,471,000,000	(5,367,000,000)		$ 35,409,000,000
Gross cash inflows from deferred purchased receivables		5,340,000,000	$ (5,406,000,000)
Cash collections of other receivables					$ (34,872,000,000)
Minimum
Schedule Of Financial Receivables [Line Items]
Funding of customer receivables sold		200,000,000
Maximum
Schedule Of Financial Receivables [Line Items]
Funding of customer receivables sold		$ 400,000,000

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Receivables - Schedule of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Customer receivables
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of year	$ 13	$ 8	$ 6
Provision for doubtful accounts	1	7	4
Write off of uncollectible accounts	(5)	(3)	(2)
Recoveries of prior write-offs	0	(1)	0
Other	(1)	2	0
Balance at end of year	8	13	8
Other receivables
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of year	32	34	24
Provision for doubtful accounts	9	6	8
Write off of uncollectible accounts	(1)	(1)	2
Recoveries of prior write-offs	(3)	1	(1)
Other	(3)	(8)	1
Balance at end of year	$ 34	$ 32	$ 34

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Interest Cost Components - Schedule of Interest Cost Components (Detail) - USD ($) $ in Millions		12 Months Ended
	Jun. 19, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Amount charged to expense	$ 24	$ 496	$ 499	$ 473
Amount capitalized		22	32	27
Interest costs		$ 518	$ 531	$ 500

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Pension and Other Postretirement Benefits - Additional Information (Detail) - USD ($)				3 Months Ended	12 Months Ended
	Apr. 01, 2018	Apr. 18, 2017	Aug. 01, 2016	Sep. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Average duration refined yield curve model parallels the plans, years						11 years
Rate of compensation increase						3.50%	3.50%	3.50%
Average period of historical returns used to calculate expected future returns, in years						5 years
Decrease in expected long-term rate of return						0.75%		0.25%
Pension and other postretirement plans, expected long-term rate of return, average of actual results, period of measurement						20 years
Expected long term rate of return on plan assets						7.75%	7.75%	7.75%
Health care cost trend rate assumed for next year						5.50%	5.50%	5.50%
Number of years over actual annual health care cost trend experience						3 years
Health care cost trend rate						4.50%	4.50%	4.50%
Cash contribution to pension plans						$ 310,000,000	$ 290,000,000	$ 470,000,000
Minimum required cash contribution to pension plan				$ 50,000,000		350,000,000
Aggregate cash cash contribution to pension plan				$ 150,000,000
Cash contribution term to pension plan				30 months
Employer contributions		$ 50,000,000
Expenses related to saving and investment plans						$ 89,000,000	71,000,000	83,000,000
Maximum
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate						9.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate						2.20%
Scenario, Forecast
Defined Benefit Plan Disclosure [Line Items]
Expected long term rate of return on plan assets					7.00%
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated (increase) decrease in net actuarial loss after-tax, plan amendment						$ 0	0	(9,000,000)
Rate of compensation increase						3.50%
Average period over which rate of compensation increases, years						5 years
Change in interest cost component of net periodic benefit cost determination						$ 34,000,000	84,000,000
Employer contributions						310,000,000	296,000,000
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated (increase) decrease in net actuarial loss after-tax, plan amendment						0	0	$ 4,000,000
Change in interest cost component of net periodic benefit cost determination						6,000,000	14,000,000
Employer contributions						0	$ 0
United Steelworkers Labor Agreement
Defined Benefit Plan Disclosure [Line Items]
Increase in pension liability, plan amendment			$ 845,000,000
Accumulated (increase) decrease in net actuarial loss after-tax, plan amendment			$ (551,000,000)
United States
Defined Benefit Plan Disclosure [Line Items]
Minimum required cash contribution to pension plan						$ 320,000,000
Subsequent Event | Salaried And Retirement Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Retirement savings plan, employer contribution, percent	3.00%
Retirement savings plan, additional employer contribution, percent	3.00%

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Pension and Other Postretirement Benefits - Schedule of Obligations and Funded Status (Detail) - USD ($) $ in Millions		12 Months Ended
	Apr. 18, 2017	Dec. 31, 2017	Dec. 31, 2016
Change in plan assets
Employer contributions	$ 50
Pension benefits
Change in benefit obligation
Benefit obligation at beginning of year		$ 7,026	$ 14,247
Service cost		90	165
Interest cost		234	435
Amendments		1	2
Actuarial (gains) losses		311	770
Transfer to Alcoa Corporation		0	(7,577)
Settlements		0	(82)
Benefits paid, net of participants’ contributions		(425)	(794)
Medicare Part D subsidy receipts		0	0
Foreign currency translation impact		122	(140)
Benefit obligation at end of year		7,359	7,026
Change in plan assets
Fair value of plan assets at beginning of year		4,666	10,928
Actual return on plan assets		212	89
Employer contributions		310	296
Participants’ contributions		0	16
Benefits paid		(404)	(762)
Administrative expenses		(33)	(65)
Transfer to Alcoa Corporation		0	(5,610)
Settlements		0	(82)
Foreign currency translation impact		111	(144)
Fair value of plan assets at end of year		4,862	4,666
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status		(2,497)	(2,360)
Less: Amounts attributed to joint venture partners		0	0
Net funded status		(2,497)	(2,360)
Amounts recognized in the Consolidated Balance Sheet consist of:
Noncurrent assets		89	6
Current liabilities		(22)	(21)
Noncurrent liabilities		(2,564)	(2,345)
Net amount recognized		(2,497)	(2,360)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Net actuarial loss		3,240	2,979
Prior service cost (benefit)		10	15
Total, before tax effect		3,250	2,994
Less: Amounts attributed to joint venture partners		0	0
Net amount recognized, before tax effect		3,250	2,994
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss consist of:
Net actuarial loss (gain)		481	(1,992)
Amortization of accumulated net actuarial loss		(220)	(380)
Prior service (benefit) cost		0	(42)
Amortization of prior service (cost) benefit		(5)	(13)
Total, before tax effect		256	(2,427)
Less: Amounts attributed to joint venture partners		0	38
Net amount recognized, before tax effect		256	(2,389)
Other postretirement benefits
Change in benefit obligation
Benefit obligation at beginning of year		980	2,319
Service cost		7	13
Interest cost		30	63
Amendments		0	0
Actuarial (gains) losses		1	112
Transfer to Alcoa Corporation		0	(1,340)
Settlements		0	0
Benefits paid, net of participants’ contributions		(98)	(197)
Medicare Part D subsidy receipts		7	9
Foreign currency translation impact		0	1
Benefit obligation at end of year		927	980
Change in plan assets
Fair value of plan assets at beginning of year		0	0
Actual return on plan assets		0	0
Employer contributions		0	0
Participants’ contributions		0	0
Benefits paid		0	0
Administrative expenses		0	0
Transfer to Alcoa Corporation		0	0
Settlements		0	0
Foreign currency translation impact		0	0
Fair value of plan assets at end of year		0	0
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status		(927)	(980)
Less: Amounts attributed to joint venture partners		0	0
Net funded status		(927)	(980)
Amounts recognized in the Consolidated Balance Sheet consist of:
Noncurrent assets		0	0
Current liabilities		(86)	(91)
Noncurrent liabilities		(841)	(889)
Net amount recognized		(927)	(980)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Net actuarial loss		146	150
Prior service cost (benefit)		(37)	(45)
Total, before tax effect		109	105
Less: Amounts attributed to joint venture partners		0	0
Net amount recognized, before tax effect		109	105
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Loss consist of:
Net actuarial loss (gain)		1	(224)
Amortization of accumulated net actuarial loss		(5)	(24)
Prior service (benefit) cost		0	37
Amortization of prior service (cost) benefit		8	24
Total, before tax effect		4	(187)
Less: Amounts attributed to joint venture partners		0	0
Net amount recognized, before tax effect		4	(187)
United States | Pension benefits
Change in benefit obligation
Benefit obligation at beginning of year		5,707
Benefit obligation at end of year		6,018	5,707
Change in plan assets
Fair value of plan assets at beginning of year		3,495
Fair value of plan assets at end of year		3,544	3,495
Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract]
Funded status		$ (2,474)	$ (2,212)

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Pension and Other Postretirement Benefits - Schedule of Pension Plan Benefit Obligations (Detail) - Pension benefits - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 7,359	$ 7,026	$ 14,247
Accumulated benefit obligation	7,169	6,850
The aggregate projected benefit obligation and fair value of plan assets for pension plans with projected benefit obligations in excess of plan assets was as follows:
Projected benefit obligation	6,600	6,995
Fair value of plan assets	4,016	4,629
The aggregate accumulated benefit obligation and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets was as follows:
Accumulated benefit obligation	6,422	6,104
Fair value of plan assets	$ 3,998	$ 3,894

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Pension and Other Postretirement Benefits - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 90	$ 155	$ 175
Interest cost	234	431	577
Expected return on plan assets	(332)	(677)	(753)
Recognized net actuarial loss	220	380	468
Amortization of prior service cost (benefit)	5	13	16
Settlements	0	19	16
Curtailments	0	0	9
Special termination benefits	0	2	16
Net periodic benefit cost	217	323	524
Discontinued operations	0	122	248
Net amount recognized in Statement of Consolidated Operations	217	201	276
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	13	14
Interest cost	30	63	92
Expected return on plan assets	0	0	0
Recognized net actuarial loss	5	24	17
Amortization of prior service cost (benefit)	(8)	(24)	(37)
Settlements	0	0	0
Curtailments	0	0	(4)
Special termination benefits	0	0	0
Net periodic benefit cost	34	76	82
Discontinued operations	0	41	43
Net amount recognized in Statement of Consolidated Operations	34	35	39
Decrease in net periodic benefit cost for the recognition of the federal subsidy awarded under Medicare Part D	11	22	34
United States | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost	$ 206	$ 261	$ 423

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Pension and Other Postretirement Benefits - Schedule of Amounts Expected to be Recognized in Net Periodic Benefit Cost (Detail) $ in Millions	Dec. 31, 2017 USD ($)
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss recognition	$ 168
Prior service cost (benefit) recognition	3
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss recognition	9
Prior service cost (benefit) recognition	$ (8)

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Pension and Other Postretirement Benefits - Schedule of Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	3.75%	4.20%
Rate of compensation increase	3.50%	3.50%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate to calculate service cost	4.20%	4.29%	4.00%
Discount rate to calculate interest cost	3.60%	3.15%	4.00%
Expected long-term rate of return on plan assets	7.75%	7.75%	7.75%
Rate of compensation increase	3.50%	3.50%	3.50%

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Pension and Other Postretirement Benefits - Schedule of Assumed Health Care Cost Trend Rates (Detail)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Retirement Benefits [Abstract]
Health care cost trend rate assumed for next year	5.50%	5.50%	5.50%
Rate to which the cost trend rate gradually declines	4.50%	4.50%	4.50%

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Pension and Other Postretirement Benefits - Schedule of One-Percentage Point Change in Assumed Rates of Health Care Cost Trend Rates (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Retirement Benefits [Abstract]
Effect on other postretirement benefit obligations, 1% increase	$ 29
Effect on total of service and interest cost components, 1% increase	1
Effect on other postretirement benefit obligations, 1% decrease	(28)
Effect on total of service and interest cost components, 1% decrease	$ (1)

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Pension and Other Postretirement Benefits - Schedule of Pension and Postretirement Plans Investment Policy and Weighted Average Asset Allocations (Detail)	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, asset allocations	100.00%	100.00%
Equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, asset allocations	28.00%	30.00%
Equities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Policy range	55.00%
Equities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Policy range	20.00%
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, asset allocations	47.00%	42.00%
Fixed income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Policy range	55.00%
Fixed income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Policy range	25.00%
Other investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, asset allocations	25.00%	28.00%
Other investments | Maximum
Defined Benefit Plan Disclosure [Line Items]
Policy range	35.00%
Other investments | Minimum
Defined Benefit Plan Disclosure [Line Items]
Policy range	15.00%

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Pension and Other Postretirement Benefits - Schedule of Fair Value of Pension Plan Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Net receivables which represents assets related to divested businesses to be transferred to the buyers	$ 28	$ 20
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	4,862	4,666	$ 10,928
Fair Value, Measurements, Recurring | Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	4,834	4,646
Defined benefit plan, alternative investments, fair value of plan asset	2,932	2,878
Fair Value, Measurements, Recurring | Pension benefits | Equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	1,357	1,395
Defined benefit plan, alternative investments, fair value of plan asset	978	1,002
Fair Value, Measurements, Recurring | Pension benefits | Equities | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	972	824
Defined benefit plan, alternative investments, fair value of plan asset	593	431
Fair Value, Measurements, Recurring | Pension benefits | Equities | Hedge Funds, Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	230	406
Defined benefit plan, alternative investments, fair value of plan asset	230	406
Fair Value, Measurements, Recurring | Pension benefits | Equities | Private Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	155	165
Defined benefit plan, alternative investments, fair value of plan asset	155	165
Fair Value, Measurements, Recurring | Pension benefits | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	2,278	1,958
Defined benefit plan, alternative investments, fair value of plan asset	924	729
Fair Value, Measurements, Recurring | Pension benefits | Fixed income | Intermediate and Long Duration Government Credit
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	1,961	773
Defined benefit plan, alternative investments, fair value of plan asset	779	655
Fair Value, Measurements, Recurring | Pension benefits | Fixed income | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	317	1,185
Defined benefit plan, alternative investments, fair value of plan asset	145	74
Fair Value, Measurements, Recurring | Pension benefits | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	1,199	1,293
Defined benefit plan, alternative investments, fair value of plan asset	1,030	1,147
Fair Value, Measurements, Recurring | Pension benefits | Other investments | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	359	243
Defined benefit plan, alternative investments, fair value of plan asset	275	178
Fair Value, Measurements, Recurring | Pension benefits | Other investments | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	257	266
Defined benefit plan, alternative investments, fair value of plan asset	172	185
Fair Value, Measurements, Recurring | Pension benefits | Other investments | Discretionary And Systematic Macro Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	583	784
Defined benefit plan, alternative investments, fair value of plan asset	583	784
Fair Value, Measurements, Recurring | Pension benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	906	1,622
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	379	393
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Equities | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	379	393
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Equities | Hedge Funds, Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Equities | Private Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	365	1,083
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Fixed income | Intermediate and Long Duration Government Credit
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	201	23
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Fixed income | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	164	1,060
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	162	146
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Other investments | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	77	65
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Other investments | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	85	81
Fair Value, Measurements, Recurring | Pension benefits | Level 1 | Other investments | Discretionary And Systematic Macro Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	996	146
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Equities | Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Equities | Hedge Funds, Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Equities | Private Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	989	146
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Fixed income | Intermediate and Long Duration Government Credit
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	981	95
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Fixed income | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	8	51
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	7	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Other investments | Other Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	7	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Other investments | Real Estate Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	0	0
Fair Value, Measurements, Recurring | Pension benefits | Level 2 | Other investments | Discretionary And Systematic Macro Hedge Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension and other postretirement plans' assets	$ 0	$ 0

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Pension and Other Postretirement Benefits - Schedule of Benefit Payments Expected to be Paid and Expected Medicare Part D Subsidy Receipts (Detail) $ in Millions	Dec. 31, 2017 USD ($)
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
2018	$ 435
2019	440
2020	440
2021	445
2022	450
Thereafter	2,265
Total benefit payments	4,475
Gross Other post- retirement benefits
Defined Benefit Plan Disclosure [Line Items]
2018	90
2019	90
2020	90
2021	90
2022	90
Thereafter	335
Total benefit payments	785
Medicare Part D subsidy receipts
Defined Benefit Plan Disclosure [Line Items]
2018	5
2019	5
2020	5
2021	5
2022	5
Thereafter	25
Total benefit payments	50
Net Other post- retirement benefits
Defined Benefit Plan Disclosure [Line Items]
2018	85
2019	85
2020	85
2021	85
2022	85
Thereafter	310
Total benefit payments	$ 735

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Other Financial Instruments - Schedule of Carrying Values and Fair Values of Other Financial Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Carrying Value
Derivative [Line Items]
Cash and cash equivalents	$ 2,150	$ 1,863
Restricted cash	4	15
Derivatives - current asset	61	14
Noncurrent receivables	20	21
Derivatives - noncurrent asset	33	10
Available-for-sale securities	106	102
Investment in common stock of Alcoa Corporation	0	1,020
Short-term borrowings	38	40
Derivatives - current liability	45	5
Commercial paper	0	0
Derivatives - noncurrent liability	14	3
Contingent payment related to an acquisition	0	78
Long-term debt, less amount due within one year	6,806	8,044
Fair Value
Derivative [Line Items]
Cash and cash equivalents	2,150	1,863
Restricted cash	4	15
Derivatives - current asset	61	14
Noncurrent receivables	20	21
Derivatives - noncurrent asset	33	10
Available-for-sale securities	106	102
Investment in common stock of Alcoa Corporation	0	1,020
Short-term borrowings	38	40
Derivatives - current liability	45	5
Commercial paper	0	0
Derivatives - noncurrent liability	14	3
Contingent payment related to an acquisition	0	78
Long-term debt, less amount due within one year	$ 7,443	$ 8,519

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Subsequent Events - Additional Information (Details) - USD ($)		1 Months Ended
	Apr. 01, 2018	Feb. 28, 2018	Dec. 31, 2017
5.72% Notes, due 2019
Subsequent Event [Line Items]
Convertible notes, interest rate			5.72%
Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, authorized amount		$ 500,000,000
Subsequent Event | 5.72% Notes, due 2019
Subsequent Event [Line Items]
Approved debt reduction amount		$ 500,000,000
Subsequent Event | Salaried And Retirement Savings Plan
Subsequent Event [Line Items]
Retirement savings plan, employer contribution, percent	3.00%
Retirement savings plan, additional employer contribution, percent	3.00%

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Quarterly Data - Schedule of Quarterly Data (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Sales revenue, goods, net	$ 3,271	$ 3,236	$ 3,261	$ 3,192	$ 2,967	$ 3,138	$ 3,234	$ 3,055	$ 12,960	$ 12,394	$ 12,413
Net income (loss) attributable to Arconic	$ (727)	$ 119	$ 212	$ 322	$ (1,258)	$ 166	$ 135	$ 16	$ (74)	$ (941)	$ (322)
Basic
Continuing operations (in usd per share)					$ (2.98)	$ 0.11	$ 0.08	$ 0.21	$ (0.28)	$ (2.58)	$ (0.54)
Discontinued operations (in usd per share)					0.07	0.23	0.19	(0.21)	0.00	0.27	(0.39)
Net loss per share-basic (in usd per share)	$ (1.51)	$ 0.23	$ 0.44	$ 0.69	(2.91)	0.34	0.27	0.00	(0.28)	(2.31)	(0.93)
Diluted
Continuing operations (in usd per share)					(2.98)	0.11	0.08	0.21	(0.28)	(2.58)	(0.54)
Discontinued operations (in usd per share)					0.07	0.22	0.19	(0.21)	0.00	0.27	(0.39)
Net loss per share-diluted (in usd per share)	$ (1.51)	$ 0.22	$ 0.43	$ 0.65	$ (2.91)	$ 0.33	$ 0.27	$ 0.00	$ (0.28)	$ (2.31)	$ (0.93)
Goodwill impairment									$ 719	$ 0	$ 25
Tax cuts and jobs act of 2017, incomplete accounting, provisional income tax expense (benefit)	$ 272
Disposal group, contingent liability, period increase (decrease), net of tax	18
Disposal group, contingent liability, period increase (decrease)	25
Increase to allowance					$ 1,267				831	772	$ 180
Firth Rixson
Diluted
Business combination, contingent consideration arrangements, change in amount of contingent consideration, liability, net of tax									81
Contingent consideration arrangements, change in amount of contingent consideration, liability	(81)				$ (56)				81	$ 56
Engineered Products and Solutions
Diluted
Goodwill, impairment loss, net of tax	719
Goodwill impairment	$ 719								$ 719