8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 8-K

CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): May 16, 2013

3M COMPANY

(Exact Name of Registrant as Specified in Its Charter)

Delaware	File No. 1-3285	41-0417775
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

3M Center, St. Paul, Minnesota	55144-1000
(Address of Principal Executive Offices)	(Zip Code)

(651) 733-1110

(Registrant’s Telephone Number, Including Area Code)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01  OTHER EVENTS

This Current Report on Form 8-K updates 3M’s Annual Report on Form 10-K for the year ended December 31, 2012 (“3M’s 2012 Annual Report”) to reflect the following:

·During the first quarter of 2013, 3M completed a realignment of its business groups (segments) to better serve its global markets and customers. In addition, 3M realigned its geographic area reporting to include Puerto Rico in the United States, rather than in the Latin America/Canada region. This Current Report on Form 8-K has been updated to reflect reclassified historical business segment and geographic area information for these realignments. The Company did not operate under the realigned business segment or geographic area structure for any of these prior periods and began to report comparative results under the new structure with the filing of its Quarterly Report on Form 10-Q for the quarter ended March 31, 2013.

·The adoption of ASU No. 2011-11, Disclosures About Offsetting Assets and Liabilities and ASU No. 2013-01, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities, which became effective January 1, 2013 (discussed in Notes 1 and 11). Therefore, the disclosure requirements have been applied retrospectively to all periods presented.

·The adoption of ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which became effective January 1, 2013 (discussed in Notes 1 and 5). Therefore, the presentation and disclosure requirements have been applied retrospectively to all periods presented.

The preceding information is all furnished hereunder as Exhibit 99 and incorporated herein by reference.

Additional detail follows for the business segment and geographic area realignments.

Effective in the first quarter of 2013, 3M completed a realignment of its business groups (segments) to better serve global markets and customers. This realignment included:

·The alignment of divisions into five business groups (segments) as further described below.

·The combination of certain existing divisions into new divisions. These included Traffic Safety and Security Division (reflecting the combination of the former Traffic Safety Systems Division and Security Systems Division) and the Optical Systems Division (reflecting the combination of the former Optical Systems Division and Mobile Interactive Solutions Division).

·The movement of certain product lines between various divisions within and across certain business segments.

In addition to the above, there were also changes to dual credit amounts as a result of the realigned structure. The new structure is comprised of five business segments: Industrial, Safety and Graphics, Electronics and Energy, Health Care, and Consumer.

Industrial: This business segment, previously referred to as Industrial and Transportation, is largely unchanged, except for the transfer of the Renewable Energy Division to the Electronics and Energy business segment.

Safety and Graphics: This business segment includes Architectural Markets, Building and Commercial Services, Commercial Graphics, Industrial Mineral Products, Personal Safety, and Traffic Safety and Security. This new business segment also reflects movement of certain product lines between various divisions.

Electronics and Energy: This business segment includes Communication Markets, Electrical Markets, Electronics Markets Materials, Electronic Solutions, Infrastructure Protection, Optical Systems, Renewable Energy, and 3M Touch Systems. This new business segment also reflects the movement of certain product lines between various divisions.

Health Care: This business segment is largely unchanged, except for the movement of certain product lines between various divisions.

Consumer: This business segment, previously referred to as Consumer and Office, is largely unchanged, except for the movement of certain product lines between various divisions.

Geographic area information is used by the Company as a secondary performance measure to manage its businesses. Export sales and certain income and expense items are generally reported within the geographic area where the final sales to 3M customers are made. During the first quarter of 2013, 3M realigned its geographic area reporting to include Puerto Rico in the United States, rather than in the Latin America/Canada region.

Item 9.01 of this Current Report on Form 8-K updates the information contained in 3M’s 2012 Annual Report to reflect 3M’s realignment of its business segments and geographic areas, which were effective during the first quarter of 2013. Updates provided in this Form 8-K are contained in Part I, Item 1, “Business” and Part II, Item 8, “Financial Statements and

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Supplementary Data” (specifically Note 3, Goodwill and Intangible Assets, Note 15, Business Segments, and Note 16, Geographic Areas). 3M also updated Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, to reflect the impact of the business segment and geographic area realignments. Information for all periods presented herein reflects the impact of these realignments. In addition, Note 1 (Significant Accounting Policies), Note 5 (Supplemental Equity and Comprehensive Information) and Note 11 (Derivatives) have been updated to retrospectively apply the presentation and disclosure requirements of certain accounting standards which became effective January 1, 2013.

By virtue of this Current Report, the Company will be able to incorporate the updated information by reference into future registration statements or post-effective amendments to existing registration statements. This Current Report does not update for other changes since the filing of the 2012 Annual Report (e.g. new developments in commitments and contingencies). For significant developments since the filing of the 2012 Annual Report, refer to subsequent 2013 Quarterly Reports on Form 10-Q.

ITEM 9.01  FINANCIAL STATEMENTS AND EXHIBITS

Exhibit No.	Description
12	Calculation of Ratio of Earnings to Fixed Charges
23	Consent of Independent Registered Public Accounting Firm
99	Updates, where applicable, to 3M’s 2012 Annual Report on Form 10-K include:
	Part I, Item 1, Business
	Part I, Item 1A, Risk Factors
	Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations
	Part II, Item 7A, Quantitative and Qualitative Disclosures About Market Risk
	Part II, Item 8, Financial Statements and Supplementary Data
101	The following financial information from 3M Company’s Current Report on Form 8-K for the year ended December 31, 2012, filed with the SEC on May 16, 2013, formatted in Extensible Business Reporting Language (XBRL): (i) the Consolidated Statement of Income for the years ended December 31, 2012, 2011 and 2010, (ii) the Consolidated Statement of Comprehensive Income for the years ended December 31, 2012, 2011 and 2010, (iii) the Consolidated Balance Sheet as of December 31, 2012 and 2011, (iv) the Consolidated Statement of Changes in Equity for the years ended December 31, 2012, 2011 and 2010, (v) the Consolidated Statement of Cash Flows for the years ended December 31, 2012, 2011 and 2010, and (vi) Notes to Consolidated Financial Statements.

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SIGNATURES

Pursuant to the requirements 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.

	3M COMPANY
	(Registrant)
Date: May 16, 2013
	By:	/s/ David W. Meline
		David W. Meline,
		Senior Vice President and Chief Financial Officer
		(Mr. Meline is the Principal Financial Officer and has
		been duly authorized to sign on behalf of the Registrant)

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EX-12

EXHIBIT 12

3M COMPANY AND SUBSIDIARIES

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Millions)

	Year		Year		Year		Year		Year
	2012		2011		2010		2009		2008
EARNINGS
Income before income taxes*	$	6,351	$	6,031	$	5,755	$	4,632	$	5,108
Add:
Interest expense (including amortization of capitalized interest)	191		206		220		236		231
Interest component of the ESOP benefit expense	—		—		—		1		3
Portion of rent under operating leases representative of the interest component	92		85		81		76		77
Less:
Equity in undistributed income of 20-50% owned companies	3		4		4		4		6
TOTAL EARNINGS AVAILABLE FOR FIXED CHARGES	$	6,631	$	6,318	$	6,052	$	4,941	$	5,413
FIXED CHARGES
Interest on debt (including capitalized interest)	194		206		218		246		243
Interest component of the ESOP benefit expense	—		—		—		1		3
Portion of rent under operating leases representative of the interest component	92		85		81		76		77
TOTAL FIXED CHARGES	$	286	$	291	$	299	$	323	$	323
RATIO OF EARNINGS TO FIXED CHARGES	23.2		21.7		20.2		15.3		16.8

*2009 results included net pre-tax charges of $194 million related to restructuring actions partially offset by a gain on sale of real estate. 2008 results included net pre-tax charges of $269 million, with charges related to restructuring actions, exit activities and a loss on sale of businesses partially offset by a gain on sale of real estate.

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EX-23

EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Registration Nos. 333-30689, 333-30691, 333-44760, 333-73192, 333-101727, 333-101751, 333-109282, 333-128251, 333-130150, 333-151039, 333-156626, 333-156627, 333-166908, 333-174562, 333-181269, and 333-181270) and Form S-3 (Registration Nos. 33-48089, 333-42660, 333-109211, and 333-176082) of 3M Company of our report dated February 14, 2013, except with respect to our opinion on the consolidated financial statements insofar as it relates to the segment and geographic area reporting realignments discussed in Notes 3, 15, and 16 and adoption of accounting standards regarding disclosures about offsetting assets and liabilities and amounts reclassified out of accumulated other comprehensive income discussed in Notes 1, 5, and 11 as to which the date is May 16, 2013, relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Current Report on Form 8-K.

/s/ PricewaterhouseCoopers LLP

Minneapolis, Minnesota

May 16, 2013

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EX-99

EXHIBIT 99

3M COMPANY

ANNUAL REPORT ON FORM 10-K

UPDATED BY THIS CURRENT REPORT ON FORM 8-K

For the Year Ended December 31, 2012

PART I

Item 1. Business.

Note:  The information contained in this Item has been updated for 3M’s business segment and geographic area realignments, which are discussed further in Notes 15 and 16 to the Consolidated Financial Statements. This Item has not been updated for other changes since the filing of the 2012 Annual Report. Item 1 contains a reference to Commitments and Contingencies (Note 13), which has not been updated for new developments. For significant developments since the filing of 2012 Annual Report, refer to subsequent 2013 Quarterly Reports on Form 10-Q.

3M Company was incorporated in 1929 under the laws of the State of Delaware to continue operations begun in 1902. The Company’s ticker symbol is MMM. As used herein, the term “3M” or “Company” includes 3M Company and its subsidiaries unless the context indicates otherwise. In this document, for any references to Note 1 through Note 17, refer to the Notes to Consolidated Financial Statements in Item 8.

Available Information

The SEC maintains a website that contains reports, proxy and information statements, and other information regarding issuers, including the Company, that file electronically with the SEC. The public can obtain any documents that the Company files with the SEC at http://www.sec.gov. The Company files annual reports, quarterly reports, proxy statements and other documents with the Securities and Exchange Commission (SEC) under the Securities Exchange Act of 1934 (Exchange Act). The public may read and copy any materials that the Company files with the SEC at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330.

3M also makes available free of charge through its website (http://investor.3M.com) the Company’s Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and, if applicable, amendments to those reports filed or furnished pursuant to the Exchange Act as soon as reasonably practicable after the Company electronically files such material with, or furnishes it to, the SEC.

General

3M is a diversified technology company with a global presence in the following businesses: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. 3M is among the leading manufacturers of products for many of the markets it serves. Most 3M products involve expertise in product development, manufacturing and marketing, and are subject to competition from products manufactured and sold by other technologically oriented companies.

At December 31, 2012, the Company employed 87,677 people (full-time equivalents), with 34,851 employed in the United States and 52,826 employed internationally.

Business Segments

As described in Note 15 to the Consolidated Financial Statements, effective in the first quarter of 2013, the Company completed a realignment of its business segments to better serve global markets and customers. In addition, during the first quarter of 2013, 3M realigned its geographic area structure to include Puerto Rico in the United States rather than in the Latin America/Canada region. Segment and geographic area information presented herein reflects the impact of these changes for all periods presented.

3M manages its operations in five operating business segments: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. 3M’s five business segments bring together common or related 3M technologies, enhancing the development of innovative products and services and providing for efficient sharing of business resources. These segments have worldwide responsibility for virtually all 3M product lines. Certain small businesses and lab-sponsored products, as well as various corporate assets and expenses, are not attributed to the business segments. Financial

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information and other disclosures relating to 3M’s business segments and operations in major geographic areas are provided in the Notes to Consolidated Financial Statements.

Industrial Business: The Industrial segment serves a broad range of markets, such as automotive original equipment manufacturer (OEM) and automotive aftermarket (auto body shops and retail), electronics, paper and packaging, food and beverage, and appliance. Industrial products include tapes, a wide variety of coated and non-woven abrasives, adhesives, specialty materials, filtration products, closure systems for personal hygiene products, acoustic systems products, and components and products that are used in the manufacture, repair and maintenance of automotive, marine, aircraft and specialty vehicles. In the fourth quarter of 2012, 3M acquired Ceradyne, Inc., which develops and produces advanced technical ceramics for demanding applications in the automotive, oil and gas, solar, industrial, electronics and defense industries. In 2011, 3M acquired Winterthur Technologie AG, a leading global supplier of precision grinding technology serving customers in the area of hard-to-grind precision applications in industrial, automotive, aircraft and cutting tools.

Major industrial products include vinyl, polyester, foil and specialty industrial tapes and adhesives; Scotch® Masking Tape, Scotch® Filament Tape and Scotch® Packaging Tape; packaging equipment; 3M™ VHB™ Bonding Tapes; conductive, low surface energy, hot melt, spray and structural adhesives; reclosable fasteners; label materials for durable goods; and coated, nonwoven and microstructured surface finishing and grinding abrasives for the industrial market. 3M Purification Inc. provides a comprehensive line of filtration products for the separation, clarification and purification of fluids and gases. Other industrial products include fluoroelastomers for seals, tubes and gaskets in engines; and engineering fluids. In addition, this segment provides 3M™ Scotchtint™ Window Film for buildings; 3M™ Ultra Safety and Security Window Film for property and personal protection during destructive weather conditions; closure systems for personal hygiene products; and acoustic systems products.

Major transportation products include insulation components, including components for catalytic converters; functional and decorative graphics; abrasion-resistant films; masking tapes; fasteners and tapes for attaching nameplates, trim, moldings, interior panels and carpeting; coated, nonwoven and microstructured finishing and grinding abrasives; structural adhesives; and other specialty materials. In addition, 3M provides paint finishing and detailing products, including a complete system of cleaners, dressings, polishes, waxes and other products.

Safety and Graphics Business: The Safety and Graphics segment serves a broad range of markets that increase the safety, security and productivity of people, facilities and systems. Major product offerings include personal protection products; traffic safety and security products, including border and civil security solutions; commercial graphics sheeting and systems; architectural surface and lighting solutions; cleaning and protection products for commercial establishments; roofing granules for asphalt shingles; and track and trace solutions. In the fourth quarter of 2010, 3M acquired Cogent Inc. and Attenti Holdings S.A. Cogent Inc. is a provider of finger, palm, face and iris biometric systems for governments, law enforcement agencies, and commercial enterprises. Attenti Holdings S.A. is a supplier of remote people-monitoring technologies used for offender-monitoring applications and to assist eldercare facilities in monitoring and enhancing the safety of patients.

This segment’s products include personal protection products, such as certain maintenance-free and reusable respirators, personal protective equipment, head and face protection, body protection, hearing protection and protective eyewear. In traffic safety and security, 3M provides reflective sheeting used on highway signs, vehicle license plates, construction work-zone devices, trucks and other vehicles, and also provides pavement marking systems, in addition to electronic surveillance products, films that protect against counterfeiting, and reflective materials that are widely used on apparel, footwear and accessories, enhancing visibility in low-light situations. Major commercial graphics products include films, inks, digital signage systems and related products used to produce graphics for vehicles, signs and interior surfaces. 3M’s Track and Trace Solutions business utilizes radio frequency identification (RFID) technology to provide a growing array of solutions. Other products include spill-control sorbents; 3M™ Thinsulate™ Insulation and 3M™ Thinsulate™ Lite Loft™ Insulation; nonwoven abrasive materials for floor maintenance and commercial cleaning; floor matting; natural and color-coated mineral granules for asphalt shingles.

Electronics and Energy Business: The Electronics and Energy segment serves customers in electronics and energy markets, including solutions for dependable, cost-effective, high-performance electronic devices, telecommunications networks, electrical products, power generation and distribution, and infrastructure protection.

This segment’s electronics solutions include optical film solutions for the electronic display industry. 3M provides distinct products for five market segments, including products for: 1) LCD computer monitors, 2) LCD televisions, 3) hand-held devices such as cellular phones and tablets, 4) notebook PCs and 5) automotive displays. This segment also provides projection solutions for the world’s office and education markets. These solutions include equipment and materials for electronic multimedia presentations, as well as desktop and notebook computer screen filters that address display light

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control, privacy, and glare reduction needs. Major electronics products also include packaging and interconnection devices; high performance fluids and abrasives used in the manufacture of computer chips, and for cooling electronics and lubricating computer hard disk drives; and high-temperature and display tapes. 3M™ Flexible Circuits use electronic packaging and interconnection technology, providing more connections in less space, and are used in ink-jet printer cartridges, cell phones and electronic devices. This segment also includes the touch systems business, including touch screens, touch monitors, and touch sensor components.

This segment’s energy solutions include electrical, telecommunications, renewable energy, and infrastructure protection products. This segment serves the worlds electrical and telecommunications markets, including electrical utilities, electrical construction, maintenance and repair, original equipment manufacturers (OEM), telecommunications central office, outside plant and enterprise, as well as aerospace, military, automotive and medical markets, with products that enable the efficient transmission of electrical power and speed the delivery of information. Products in this segment include pressure sensitive tapes and resins, electrical insulation, a wide array of fiber-optic and copper-based telecommunications systems for rapid deployment of fixed and wireless networks, as well as the 3M™ Aluminum Conductor Composite Reinforced (ACCR) electrical power cable that increases transmission capacity for existing power lines. This segment also includes renewable energy component solutions for the solar and wind power industries, as well as infrastructure products solutions that provide municipalities both protection and detection solutions for electrical, oil, natural gas, water, rebar and other infrastructure assets.

Health Care Business: The Health Care segment serves markets that include medical clinics and hospitals, pharmaceuticals, dental and orthodontic practitioners, health information systems, and food manufacturing and testing. Products and services provided to these and other markets include medical and surgical supplies, skin health and infection prevention products, inhalation and transdermal drug delivery systems, dental and orthodontic products (oral care), health information systems, and food safety products.

In the medical and surgical areas, 3M is a supplier of medical tapes, dressings, wound closure products, orthopedic casting materials, electrodes and stethoscopes. In infection prevention, 3M markets a variety of surgical drapes, masks and preps, as well as sterilization assurance equipment. Other products include drug delivery systems, such as metered-dose inhalers, transdermal skin patches and related components. In addition, in the fourth quarter of 2010, 3M acquired Arizant Inc., a manufacturer of patient warming solutions designed to prevent hypothermia in surgical settings. Dental and orthodontic products include restoratives, adhesives, finishing and polishing products, crowns, impression materials, preventive sealants, professional tooth whiteners, prophylaxis and orthodontic appliances. In health information systems, 3M develops and markets computer software for hospital coding and data classification, and provides related consulting services. 3M provides food safety products that make it faster and easier for food processors to test the microbiological quality of food.

Consumer Business: The Consumer segment serves markets that include consumer retail, office retail, home improvement, building maintenance and other markets. Products in this segment include office supply products, stationery products, construction and home improvement products (do-it-yourself), home care products, protective material products, certain consumer retail personal safety products, and consumer health care products.

Major consumer products include Scotch® brand products, such as Scotch® Magic™ Tape, Scotch® Glue Stick and Scotch® Cushioned Mailer; Post-it® Products, such as Post-it® Flags, Post-it® Note Pads, Post-it® Labeling & Cover-up Tape, and Post-it® Pop-up Notes and Dispensers; construction and home improvement products, including surface-preparation and wood-finishing materials, Command™ Adhesive Products and Filtrete™ Filters for furnaces and air conditioners; home care products, including Scotch-Brite® Scour Pads, Scotch-Brite® Scrub Sponges, Scotch-Brite™ Microfiber Cloth products, O-Cel-O™ Sponges and Scotchgard™ Fabric Protectors; protective material products; certain maintenance-free respirators; certain consumer retail personal safety products, including safety glasses and hearing protectors; Nexcare™ Adhesive Bandages; and ACE® branded (and related brands) elastic bandage, supports and thermometer product lines.

Distribution

3M products are sold through numerous distribution channels, including directly to users and through numerous wholesalers, retailers, jobbers, distributors and dealers in a wide variety of trades in many countries around the world. Management believes the confidence of wholesalers, retailers, jobbers, distributors and dealers in 3M and its products — a confidence developed through long association with skilled marketing and sales representatives — has contributed significantly to 3M’s position in the marketplace and to its growth.

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Research and Patents

Research and product development constitutes an important part of 3M’s activities and has been a major driver of 3M’s sales growth. Research, development and related expenses totaled $1.634 billion in 2012, $1.570 billion in 2011 and $1.434 billion in 2010. Research and development, covering basic scientific research and the application of scientific advances in the development of new and improved products and their uses, totaled $1.079 billion in 2012, $1.036 billion in 2011 and $919 million in 2010. Related expenses primarily include technical support provided by 3M to customers who are using existing 3M products; internally developed patent costs, which include costs and fees incurred to prepare, file, secure and maintain patents; and amortization of acquired patents.

The Company’s products are sold around the world under various trademarks. The Company also owns, or holds licenses to use, numerous U.S. and foreign patents. The Company’s research and development activities generate a steady stream of inventions that are covered by new patents. Patents applicable to specific products extend for varying periods according to the date of patent application filing or patent grant and the legal term of patents in the various countries where patent protection is obtained. The actual protection afforded by a patent, which can vary from country to country, depends upon the type of patent, the scope of its coverage and the availability of legal remedies in the country.

The Company believes that its patents provide an important competitive advantage in many of its businesses. In general, no single patent or group of related patents is in itself essential to the Company as a whole or to any of the Company’s business segments. The importance of patents in the Electronics and Energy segment is described in “Performance by Business Segment” — “Electronics and Energy Business” in Part II, Item 7, of this Current Report on Form 8-K.

Raw Materials

In 2012, the Company experienced stable to declining cost for most raw material categories and transportation fuel costs. This was driven by year-on-year cost decreases in many feedstock categories, including petroleum based materials, minerals, metals and wood pulp based products. To date, the Company is receiving sufficient quantities of all raw materials to meet its reasonably foreseeable production requirements. It is impossible to predict future shortages of raw materials or the impact any such shortages would have. 3M has avoided disruption to its manufacturing operations through careful management of existing raw material inventories and development and qualification of additional supply sources. 3M manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts.

Environmental Law Compliance

3M’s manufacturing operations are affected by national, state and local environmental laws around the world. 3M has made, and plans to continue making, necessary expenditures for compliance with applicable laws. 3M is also involved in remediation actions relating to environmental matters from past operations at certain sites. Refer to the “Environmental Matters and Litigation” section in Note 13, Commitments and Contingencies, for more detail.

Environmental expenditures relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed. Reserves for liabilities related to anticipated remediation costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company’s commitment to a plan of action. Environmental expenditures for capital projects that contribute to current or future operations generally are capitalized and depreciated over their estimated useful lives.

In 2012, 3M invested about $27 million in capital projects to protect the environment. This amount excludes expenditures for remediation actions relating to existing matters caused by past operations that do not contribute to current or future revenues, which are expensed. Capital expenditures for environmental purposes have included pollution control devices — such as wastewater treatment plant improvements, scrubbers, containment structures, solvent recovery units and thermal oxidizers — at new and existing facilities constructed or upgraded in the normal course of business. Consistent with the Company’s policies stressing environmental responsibility, capital expenditures (other than for remediation projects) for known projects are presently expected to be about $36 million over the next two years for new or expanded programs to build facilities or modify manufacturing processes to minimize waste and reduce emissions.

While the Company cannot predict with certainty the future costs of such cleanup activities, capital expenditures or operating costs for environmental compliance, the Company does not believe they will have a material effect on its capital expenditures, earnings or competitive position.

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Executive Officers

Following is a list of the executive officers of 3M, and their age, present position, the year elected to their present position and other positions they have held during the past five years. No family relationships exist among any of the executive officers named, nor is there any undisclosed arrangement or understanding pursuant to which any person was selected as an officer. This information is presented in the table below as of the date of the 10-K filing (February 14, 2013).

Name	Age	Present Position	Year  Elected to Present Position	Other Positions Held During 2008-2012
Inge G. Thulin	59	Chairman of the Board, President and Chief Executive Officer	2012	President and Chief Executive Officer, 2012 Executive Vice President and Chief Operating Officer, 2011-2012 Executive Vice President, International Operations, 2004-2011
Julie L. Bushman	51	Executive Vice President, Safety and Graphics	2012	Executive Vice President, Safety Security and Protection Services Business, 2011-2012 Vice President and General Manager, Occupational Health and Environmental Safety Division, 2007-2011
Joaquin Delgado	53	Executive Vice President, Health Care	2012	Executive Vice President, Electro and Communications Business, 2009-2012 Vice President and General Manager, Electronics Markets Materials Division, 2007-2009
Ivan K. Fong	51	Senior Vice President, Legal Affairs and General Counsel	2012	General Counsel, U.S. Department of Homeland Security, 2009-2012 Chief Legal Officer and Secretary, Cardinal Health Inc., 2005-2009
Ian F. Hardgrove	62	Senior Vice President, Marketing, Sales and Communications	2011	Senior Vice President, Marketing and Sales, 2011 Vice President and General Manager, Automotive Aftermarket Division, 2007-2011
Christopher D. Holmes	53	Senior Vice President, Corporate Supply Chain Operations	2012	Executive Vice President, Industrial and Transportation Business, 2011-2012 Vice President and General Manager, Abrasives Systems Division, 2007-2011
Michael A. Kelly	56	Executive Vice President, Electronics and Energy	2012	Executive Vice President, Display and Graphics Business, 2006-2012
Roger H.D. Lacey	62	Senior Vice President, Strategy and Corporate Development	2010	Vice President, Corporate Strategy and Marketing Development, 2007-2009

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Name	Age	Present Position	Year  Elected to Present Position	Other Positions Held During 2008-2012
Marlene M. McGrath	50	Senior Vice President, Human Resources	2012	Senior Vice President, Human Resources and Interim General Counsel, 2012 Vice President, Human Resources, International Operations, 2010-2012 Director, Human Resources, International Operations, 2006-2010
David W. Meline	55	Senior Vice President and Chief Financial Officer	2011	Vice President, Corporate Controller and Chief Accounting Officer, 2008-2011 Chief Financial Officer, North America, General Motors Corp., 2007-2008
Frederick J. Palensky	63	Executive Vice President, Research and Development and Chief Technology Officer	2006
Brad T. Sauer	53	Executive Vice President, Industrial	2012	Executive Vice President, Health Care Business, 2004-2012
Hak Cheol Shin	55	Executive Vice President, International Operations	2011	Executive Vice President, Industrial and Transportation Business, 2006-2011
Michael G. Vale	46	Executive Vice President, Consumer	2012	Executive Vice President, Consumer and Office Business, 2011-2012 Managing Director, 3M Brazil, 2009-2011 Vice President and General Manager, Aearo Technologies Inc., 2008-2009

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Cautionary Note Concerning Factors That May Affect Future Results

This Current Report on Form 8-K, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 7, contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The Company may also make forward-looking statements in other reports filed with the Securities and Exchange Commission, in materials delivered to shareholders and in press releases. In addition, the Company’s representatives may from time to time make oral forward-looking statements.

Forward-looking statements relate to future events and typically address the Company’s expected future business and financial performance. Words such as “plan,” “expect,” “aim,” “believe,” “project,” “target,” “anticipate,” “intend,” “estimate,” “will,” “should,” “could” and other words and terms of similar meaning, typically identify such forward-looking statements. In particular, these include, among others, statements relating to the Company’s

·strategy for growth, future revenues, earnings, cash flow, uses of cash and other measures of financial performance, and market position,

·worldwide economic and capital markets conditions, such as interest rates, foreign currency exchange rates, financial conditions of our suppliers and customers, and natural and other disasters affecting the operations of the Company or our suppliers and customers,

·new business opportunities, product development, and future performance or results of current or anticipated products,

·the scope, nature or impact of acquisition, strategic alliance and divestiture activities,

·the outcome of contingencies, such as legal and regulatory proceedings,

·future levels of indebtedness, common stock repurchases and capital spending,

·future availability of and access to credit markets,

·pension and postretirement obligation assumptions and future contributions, asset impairments, tax liabilities, information technology security, and

·the effects of changes in tax, environmental and other laws and regulations in the United States and other countries in which we operate.

The Company assumes no obligation to update or revise any forward-looking statements.

Forward-looking statements are based on certain assumptions and expectations of future events and trends that are subject to risks and uncertainties. Actual future results and trends may differ materially from historical results or those reflected in any such forward-looking statements depending on a variety of factors. Important information as to these factors can be found in this document, including, among others, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under the headings of “Overview,” “Critical Accounting Estimates” and “Financial Condition and Liquidity.” Discussion of these factors is incorporated by reference from Part I, Item 1A, “Risk Factors,” of this document, and should be considered an integral part of Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” For additional information concerning factors that may cause actual results to vary materially from those stated in the forward-looking statements, see our reports on Form 10-K, 10-Q and 8-K filed with the SEC from time to time.

Item 1A. Risk Factors.

Provided below is a cautionary discussion of what we believe to be the most important risk factors applicable to the Company. Discussion of these factors is incorporated by reference into and considered an integral part of Part II, Item 7, “Management’s Discussion and Analysis of Financial Conditions and Results of Operations.”

* Results are impacted by the effects of, and changes in, worldwide economic and capital markets conditions. The Company operates in more than 70 countries and derives approximately two-thirds of its revenues from outside the United States. The Company’s business is subject to global competition and may be adversely affected by factors in the United States and other countries that are beyond its control, such as disruptions in financial markets, economic downturns in the form of either contained or widespread recessionary conditions, elevated unemployment levels, sluggish or uneven recovery, in specific countries or regions, or in the various industries in which the Company operates; social, political or labor conditions in specific countries or regions; natural and other disasters affecting the operations of the Company or its customers and suppliers; or adverse changes in the availability and cost of capital, interest rates, tax rates, or regulations in the jurisdictions in which the Company operates.

* The Company’s credit ratings are important to 3M’s cost of capital. The major rating agencies routinely evaluate the Company’s credit profile and assign debt ratings to 3M. The Company currently has an AA- credit rating, with a stable

7

outlook, from Standard & Poor’s and an Aa2 credit rating, with a stable outlook, from Moody’s Investors Service. 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. The Company’s current ratings have served to lower 3M’s borrowing costs and facilitate access to a variety of lenders. Failure to maintain the current ratings level would adversely affect the Company’s cost of funds and could adversely affect liquidity and access to capital markets.

* The Company’s results are affected by competitive conditions and customer preferences. Demand for the Company’s products, which impacts revenue and profit margins, is affected by (i) the development and timing of the introduction of competitive products; (ii) the Company’s response to downward pricing to stay competitive; (iii) changes in customer order patterns, such as changes in the levels of inventory maintained by customers and the timing of customer purchases which may be affected by announced price changes, changes in the Company’s incentive programs, or the customer’s ability to achieve incentive goals; and (iv) changes in customers’ preferences for our products, including the success of products offered by our competitors, and changes in customer designs for their products that can affect the demand for some of the Company’s products.

* Foreign currency exchange rates and fluctuations in those rates may affect the Company’s ability to realize projected growth rates in its sales and earnings. Because the Company’s financial statements are denominated in U.S. dollars and approximately two-thirds of the Company’s revenues are derived from outside the United States, the Company’s results of operations and its ability to realize projected growth rates in sales and earnings could be adversely affected if the U.S. dollar strengthens significantly against foreign currencies.

* The Company’s growth objectives are largely dependent on the timing and market acceptance of its new product offerings, including its ability to continually renew its pipeline of new products and to bring those products to market. This ability may be adversely affected by difficulties or delays in product development, such as the inability to identify viable new products, obtain adequate intellectual property protection, or gain market acceptance of new products. There are no guarantees that new products will prove to be commercially successful.

* The Company’s future results are subject to fluctuations in the costs and availability of purchased components, compounds, raw materials and energy, including oil and natural gas and their derivatives, due to shortages, increased demand, supply interruptions, currency exchange risks, natural disasters and other factors. The Company depends on various components, compounds, raw materials, and energy (including oil and natural gas and their derivatives) supplied by others for the manufacturing of its products. It is possible that any of its supplier relationships could be interrupted due to natural and other disasters and other events, or be terminated in the future. Any sustained interruption in the Company’s receipt of adequate supplies could have a material adverse effect on the Company. In addition, while the Company has a process to minimize volatility in component and material pricing, no assurance can be given that the Company will be able to successfully manage price fluctuations or that future price fluctuations or shortages will not have a material adverse effect on the Company.

* Acquisitions, strategic alliances, divestitures, and other unusual events resulting from portfolio management actions and other evolving business strategies, and possible organizational restructuring could affect future results. The Company monitors its business portfolio and organizational structure and has made and may continue to make acquisitions, strategic alliances, divestitures and changes to its organizational structure. With respect to acquisitions, future results will be affected by the Company’s ability to integrate acquired businesses quickly and obtain the anticipated synergies.

* The Company’s future results may be affected if the Company generates fewer productivity improvements than estimated. The Company utilizes various tools, such as Lean Six Sigma, to improve operational efficiency and productivity. There can be no assurance that all of the projected productivity improvements will be realized.

* The Company employs information technology systems to support its business, including ongoing phased implementation of an enterprise resource planning (ERP) system on a worldwide basis over the next several years. Security breaches and other disruptions to the Company’s information technology infrastructure could interfere with the Company’s operations, compromise information belonging to the Company and its customers and suppliers, and expose the Company to liability which could adversely impact the Company’s business and reputation. In the ordinary course of business, the Company relies on information technology networks and systems, some of which are managed by third parties, to process, transmit and store electronic information, and to manage or support a variety of business processes and activities. Additionally, the Company collects and stores sensitive data, including proprietary business information. Despite security measures and business continuity plans, the Company’s information technology networks and infrastructure may be vulnerable to damage, disruptions or shutdowns due to attack by hackers or breaches, employee error or malfeasance, power outages, computer viruses, telecommunication or utility failures, systems failures, natural disasters or other catastrophic events. There may be other challenges and risks as the Company upgrades and

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standardizes its ERP system on a worldwide basis. Any such events could result in legal claims or proceedings, liability or penalties under privacy laws, disruption in operations, and damage to the Company’s reputation, which could adversely affect the Company’s business.

* The Company’s future results may be affected by various legal and regulatory proceedings and legal compliance risks, including those involving product liability, antitrust, environmental, the U.S. Foreign Corrupt Practices Act and other anti-bribery, anti-corruption, or other matters. The outcome of these legal proceedings may differ from the Company’s expectations because the outcomes of litigation, including regulatory matters, are often difficult to reliably predict. Various factors or developments can lead the Company to change current estimates of liabilities and related insurance receivables where applicable, or make such estimates for matters previously not susceptible of 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, settlement or unfavorable development could result in future charges that could have a material adverse effect on the Company’s results of operations or cash flows in any particular period. For a more detailed discussion of the legal proceedings involving the Company and the associated accounting estimates, see the discussion in Note 13 “Commitments and Contingencies” within the Notes to Consolidated Financial Statements.

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

Note:  The information contained in this Item has been updated for 3M’s business segment and geographic area realignments, which are discussed further in Notes 15 and 16 to the Consolidated Financial Statements. This Item has not been updated for other changes since the filing of the 2012 Annual Report. For significant developments since the filing of 2012 Annual Report, refer to subsequent 2013 Quarterly Reports on Form 10-Q.

Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is designed to provide a reader of 3M’s financial statements with a narrative from the perspective of management. 3M’s MD&A is presented in eight sections:

·Overview

·Results of Operations

·Performance by Business Segment

·Performance by Geographic Area

·Critical Accounting Estimates

·New Accounting Pronouncements

·Financial Condition and Liquidity

·Financial Instruments

OVERVIEW

3M is a diversified global manufacturer, technology innovator and marketer of a wide variety of products. As described in Note 15 to the Consolidated Financial Statements, effective in the first quarter of 2013, the Company completed a realignment of its business segments to better serve global markets and customers. In addition, during the first quarter of 2013, 3M realigned its geographic area structure to include Puerto Rico in the United States rather than in the Latin America/Canada region. Segment and geographic area information presented herein reflects the impact of these changes for all periods presented. 3M manages its operations in five operating business segments: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer.

Fourth-quarter 2012 net income attributable to 3M was $991 million, or $1.41 per diluted share, compared to $954 million, or $1.35 per diluted share, in the fourth quarter of 2011. Fourth-quarter 2012 sales totaled $7.4 billion, an increase of 4.2 percent from the fourth quarter of 2011. Organic local-currency sales (which include organic volume and selling price impacts) grew 4.3 percent, acquisitions added 0.9 percent to sales, and currency effects reduced sales by 1.0 percent year-on-year. From a business segment perspective, Consumer led with organic local-currency sales growth of 8.8 percent, driven by consumer health care, construction and home improvement markets, and stationery and office supplies. Health Care organic local-currency sales grew 5.9 percent, with positive growth in all businesses, led by food safety, health information systems, critical and chronic care, and oral care. Electronics and Energy organic local-currency sales growth was 4.4 percent, led by optical systems, with sales also increasing in infrastructure protection, electrical, and telecommunication markets, partially offset by declines in renewable energy and electronics markets materials. Industrial organic local-currency sales grew 4.4 percent, led by liquid filtration, aerospace, industrial adhesives and tapes, abrasives and automotive OEM partially offset by declines in advanced materials. Organic local-currency sales declined 0.3 percent in Safety and Graphics, as sales growth in personal safety, architectural markets, commercial graphics, and roofing granules was offset by a year-on-year decline in traffic safety and security systems.

From a geographic area perspective, fourth-quarter 2012 organic local-currency sales growth was 9.9 percent in Latin America/Canada, 5.8 percent in Asia Pacific, and 5.2 percent in the United States. Europe, Middle East and Africa (EMEA) organic local-currency sales declined 1.0 percent, impacted by a weak economy in Western Europe. Latin America/Canada sales growth was broad-based, with all five of our business segments generating positive organic local-currency sales growth, led by Health Care; Safety and Graphics; Electronics and Energy; and Consumer. Organic local-currency sales growth increased 11 percent in Brazil, in the face of a still-recovering economy, and Mexico grew nearly 10 percent. In Asia Pacific, Japan declined year-on-year, reflecting continued challenging economic conditions. Organic local-currency sales in the rest of Asia Pacific grew nearly 10 percent, with China up over 16 percent. Organic local-currency sales growth in the United States was led by Consumer.

For total year 2012, net income attributable to 3M was $4.444 billion, or $6.32 per diluted share, compared to $4.283 billion, or $5.96 per diluted share, in 2011, an increase of 6.0 percent on a per diluted share basis. Sales totaled $29.9 billion, an increase of 1.0 percent from 2011. Organic local-currency sales grew 2.6 percent, acquisitions added 0.8 percent to sales and currency effects reduced sales by 2.4 percent year-on-year. From a business segment perspective,

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organic local-currency sales growth was 5.2 percent in Industrial, 4.7 percent in Health Care, 3.6 percent in Consumer, and 2.4 percent in Safety and Graphics. Organic local-currency sales declined 3.7 percent in Electronics and Energy. From a geographic area perspective, 2012 organic local-currency sales growth was 11.1 percent in Latin America/Canada, 4.2 percent in the United States, and 0.1 percent in Asia Pacific. Asia Pacific was impacted by a soft global consumer electronics industry. EMEA organic local-currency sales declined 0.6 percent, impacted by a weak economy in Western Europe.

Operating income in 2012 was 21.7 percent of sales, compared to 20.9 percent of sales in 2011, an improvement of 0.8 percentage points. The primary benefit (as discussed in the Results of Operations section) related to the combination of selling price increases and raw material cost decreases. Currency effects reduced diluted earnings per share by an estimated 15 cents. Net insurance recoveries in 2012 related to the 2011 earthquake and tsunami in Japan increased earnings by approximately 4 cents per diluted share. In 2011, the impact of natural disasters, net of insurance recoveries, reduced earnings by approximately 6 cents per diluted share (discussed further below). Early retirement/restructuring costs for 2012 totaled approximately 8 cents per diluted share, which included the first quarter 2012 charge of approximately 3 cents per diluted share related to a voluntary early retirement program in the United States.

The most significant non-operating items that impacted earnings were diluted shares outstanding and income taxes. Average diluted shares outstanding declined 2.2 percent to 703.3 million, which increased earnings per diluted share by approximately 14 cents. The income tax rate for 2012 was 29.0 percent compared to 27.8 percent in 2011, which decreased earnings per diluted share by approximately 11 cents.

Fourth-quarter 2011 sales totaled $7.1 billion, an increase of 5.7 percent from the fourth quarter of 2010. Net income attributable to 3M was $954 million, or $1.35 per diluted share, in the fourth quarter of 2011, compared to $928 million, or $1.28 per diluted share, in the fourth quarter of 2010. 3M’s sales growth was led by its industrial-oriented businesses, along with steady growth in consumer and health care. The business environment remained challenging, impacted by deteriorating demand in Western Europe and slower consumer electronics activity. While sales grew across much of the portfolio, sales of optical films for LCD TVs remained weak and momentum also slowed in other parts of electronics. Four of the Company’s five business segments showed growth in sales, led by Industrial at 14.7 percent, Safety and Graphics at 6.1 percent, Consumer also at 6.1 percent, and Health Care at 5.3 percent. Electronics and Energy sales decreased 6.7 percent, negatively impacted by a slowdown in electronics-related businesses. Sales declined 16 percent in optical systems, which is part of Electronics and Energy, impacted by end-market weakness and lower attachment rates in LCD TVs.

Fourth-quarter 2011 sales increased in every major geographic region, with Latin America/Canada up 9.9 percent, the U.S. up 7.4 percent, EMEA up 4.4 percent, and Asia Pacific up 2.8 percent. Excluding optical systems, Asia Pacific sales increased 7.7 percent. Of the 5.7 percent worldwide sales growth, 3.3 points was from the combined impact of higher organic volume of 1.3 points and selling price growth of 2.0 points, 2.3 points was from acquisitions, and 0.1 points was from favorable currency effects. Organic volume growth of 1.3 percent reflected slower growth in Asia Pacific, partially due to weakness across the electronics market and slower growth in China, in addition to weakness in Western Europe.

For total year 2011, sales increased 11.1 percent to $29.6 billion, led by Industrial, Safety and Graphics, and Health Care. All major geographic regions showed improvement, led by Latin America/Canada. The increase in global sales reflected improved market penetration and new product flow along with significant growth in important end-markets such as general industrial and personal safety. Net income attributable to 3M was $4.283 billion, or $5.96 per diluted share in 2011, compared to $4.085 billion, or $5.63 per diluted share, in 2010 (including the first-quarter 2010 special item discussed below).

During 2011, 3M was impacted by the first-quarter earthquake and tsunami in Japan and by the fourth-quarter flooding in Thailand. Automobile and electronic manufacturers were most impacted; thus, 3M’s automotive OEM and electronics-related businesses were most affected. 3M estimates that combined direct and indirect business disruption resulting from the 2011 Japan natural disaster, net of the benefit from sales of 3M products used in the reconstruction efforts and initial insurance recoveries, plus the impact of Thailand flooding, reduced 2011 sales growth by an estimated 0.8 percentage points and earnings by approximately 6 cents per diluted share, with most of this impact in the first half of 2011. In the fourth quarter of 2011, the flooding in Thailand reduced sales growth by an estimated $35 million and operating income by $20 million, with this operating income effect offset by $23 million in insurance recoveries related to the earthquake and tsunami in Japan. Japan represented approximately 9 percent of total 3M sales for total year 2011. Related to these natural disasters, no material asset or investment impairments were recorded. In addition, 3M did not have any significant issues related to these natural disasters concerning inventories, customer receivables, lease terminations, environmental exposures, guarantees, indemnifications, debt covenant compliance, or significant tax issues. 3M does have certain

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insurance coverage which limited its exposure and resulted in some initial recovery in the fourth quarter of 2011 (as discussed above).

In 2010, 3M recorded a one-time, non-cash income tax charge of $84 million, or 12 cents per diluted share, resulting from the March 2010 enactment of the Patient Protection and Affordable Care Act, including modifications made in the Health Care and Education Reconciliation Act of 2010. Refer to the special items discussion at the end of this overview section for more detail.

The following table contains sales and operating income results by business segment for the years ended December 31, 2012 and 2011. In addition to the discussion below, refer to the section entitled “Performance by Business Segment” and “Performance by Geographic Area” later in MD&A for a more detailed discussion of the sales and income results of the Company and its respective business segments (including Corporate and Unallocated). Refer to Note 15 for additional information on business segments, including Elimination of Dual Credit.

																	2012 vs. 2011
	2012								2011								% change
	Net			% of		Oper.			Net			% of		Oper.			Net		Oper.
(Dollars in millions)	Sales			Total		Income			Sales			Total		Income			Sales		Income
Business Segments
Industrial	$	9,943		33.2	%	$	2,236		$	9,629		32.5	%	$	1,983		3.3	%	12.8	%
Safety and Graphics	5,471			18.3	%	1,217			5,458			18.4	%	1,237			0.2	%	(1.6	)%
Electronics and Energy	5,458			18.3	%	1,026			5,732			19.4	%	1,140			(4.8	)%	(10.0	)%
Health Care	5,138			17.2	%	1,641			5,011			16.9	%	1,484			2.5	%	10.5	%
Consumer	4,386			14.7	%	943			4,230			14.3	%	855			3.7	%	10.3	%
Corporate and Unallocated	4			—	%	(471		)	9			—	%	(420		)	—		—
Elimination of Dual Credit	(496		)	(1.7	)%	(109		)	(458		)	(1.5	)%	(101		)	—		—
Total Company	$	29,904		100.0	%	$	6,483		$	29,611		100.0	%	$	6,178		1.0	%	4.9	%

Sales in 2012 increased 1.0 percent, led by Consumer at 3.7 percent, Industrial at 3.3 percent and Health Care at 2.5 percent. Sales increased 0.2 percent in Safety and Graphics, and declined 4.8 percent in Electronics and Energy. Total company organic local-currency sales growth (which includes organic volume and selling price impacts) was 2.6 percent, acquisitions added 0.8 percent, and foreign currency impacts reduced sales by 2.4 percent. Four of 3M’s five business segments posted operating income margins in excess of 21 percent in 2012. Worldwide operating income margins for 2012 were 21.7 percent, compared to 20.9 percent for 2011.

Sales in 2011 increased 11.1 percent, led by Industrial at 18.6 percent, Safety and Graphics at 12.0 percent, and Health Care at 11.5 percent. Consumer sales increased 7.7 percent. Electronics and Energy sales increased 1.8 percent, impacted by fewer orders for optical films. Total company organic local-currency sales growth was 4.7 percent, acquisitions added 3.3 percent, and foreign currency impacts added 3.1 percent. 3M’s five business segments all posted operating income margins of approximately 20 percent or higher in 2011 and 2010. Worldwide operating income margins for 2011 were 20.9 percent, compared to 22.2 percent for 2010.

3M generated $5.3 billion of operating cash flow in 2012, an increase of $16 million when compared to 2011. This followed an increase of $110 million when comparing 2011 to 2010. Refer to the section entitled “Financial Condition and Liquidity” later in MD&A for a discussion of items impacting cash flows. In February 2013, 3M’s Board of Directors authorized the repurchase of up to $7.5 billion of 3M’s outstanding common stock, which replaced the Company’s previous repurchase program. This new program has no pre-established end date. In 2012, the Company purchased $2.204 billion of treasury stock, compared to $2.701 billion in 2011 and $854 million in 2010. In February 2013, 3M’s Board of Directors authorized a dividend increase of 7.6 percent for 2013, marking the 55th consecutive year of dividend increases for 3M. 3M’s debt to total capital ratio (total capital defined as debt plus equity) was 25 percent at December 31, 2012, 2011 and 2010. 3M has an AA- credit rating with a stable outlook from Standard & Poor’s and an Aa2 credit rating with a stable outlook from Moody’s Investors Service. The Company has significant cash on hand and sufficient additional access to capital markets to meet its funding needs.

In 2012, the Company experienced stable to declining cost for most raw material categories and transportation fuel costs. This was driven by year-on-year cost decreases in many feedstock categories, including petroleum based materials, minerals, metals and wood pulp based products. To date the Company is receiving sufficient quantities of all raw materials to meet its reasonably foreseeable production requirements. It is impossible to predict future shortages of raw materials or the impact any such shortages would have. 3M has avoided disruption to its manufacturing operations through careful management of existing raw material inventories and development and qualification of additional supply

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sources. 3M manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts.

On a worldwide basis, 3M’s pension and postretirement plans were 87 percent funded at year-end 2012. The U.S. qualified plans, which are approximately 67 percent of the worldwide pension obligation, were 96 percent funded, the international pension plans were 81 percent funded, and the U.S. non-qualified pension plan is not funded. Asset returns in 2012 for the U.S. qualified plan were 13.6%. For the U.S. qualified pension plan, the expected long-term rate of return on an annualized basis for 2013 is 8.00%, a decrease of 0.25 percentage points from 2012. The U.S. qualified plan year-end 2012 discount rate was 4.14%, down 0.01 percentage points from the year-end 2011 discount rate of 4.15%.

3M expects to contribute approximately $400 million to $600 million of cash to its global pension and postretirement plans in 2013. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2013. 3M expects pension and postretirement benefit expense in 2013 to decrease by approximately $100 million pre-tax, or approximately 10 cents per diluted share, when compared to 2012. Refer to “Critical Accounting Estimates” within MD&A and Note 10 (Pension and Postretirement Benefit Plans) for additional information concerning 3M’s pension and post-retirement plans.

There are a few major items that will impact earnings in 2013. As discussed further above, 3M expects that a decrease in pension and postretirement expense will increase 2013 earnings, when compared to 2012, by approximately 10 cents per diluted share. 3M currently expects that its effective tax rate for 2013 will be approximately 29.5 to 30.0 percent, compared to 29.0 percent for 2012. 3M expects to incur restructuring and one-time acquisition costs of approximately $30 million in the first quarter of 2013. Currency effects are not expected to have a material impact on earnings in 2013. Considering these items, 3M currently expects that sales growth and related incremental income, in addition to other benefits, should more than offset the items that will negatively impact earnings.

Forward-looking statements in Item 7 may involve risks and uncertainties that could cause results to differ materially from those projected (refer to the section entitled “Cautionary Note Concerning Factors That May Affect Future Results” in Item 1 and the risk factors provided in Item 1A for discussion of these risks and uncertainties).

Special Items:

Special items represent significant charges or credits that are important to understanding changes in the Company’s underlying operations.

In 2010, 3M recorded a one-time, non-cash income tax charge of $84 million, or 12 cents per diluted share, resulting from the March 2010 enactment of the Patient Protection and Affordable Care Act, including modifications made in the Health Care and Education Reconciliation Act of 2010 (collectively, the “Act”). The charge is due to a reduction in the value of the company’s deferred tax asset as a result of the Act’s change to the tax treatment of Medicare Part D reimbursements. This item is discussed in more detail in Note 7 (Income Taxes).

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RESULTS OF OPERATIONS

Net Sales:

	2012									2011
	U.S.			Intl.			Worldwide			U.S.			Intl.			Worldwide
Net sales (millions)	$	10,571		$	19,333		$	29,904		$	10,071		$	19,540		$	29,611
% of worldwide sales	35.3		%	64.7		%				34.0		%	66.0		%
Components of net sales change:
Volume — organic	2.1		%	0.8		%	1.2		%	3.9		%	3.5		%	3.7		%
Price	2.1			0.9			1.4			1.9			0.5			1.0
Organic local-currency sales	4.2			1.7			2.6			5.8			4.0			4.7
Acquisitions	0.8			0.8			0.8			3.0			3.5			3.3
Translation	—			(3.6		)	(2.4		)	—			4.7			3.1
Total sales change	5.0		%	(1.1		)%	1.0		%	8.8		%	12.2		%	11.1		%

In 2012, organic local-currency sales increased 2.6 percent. Organic local-currency sales growth was led by Latin America/Canada and the United States, while Asia Pacific was flat, and EMEA was down slightly. Worldwide organic local-currency sales grew 5.2 percent in Industrial, 4.7 percent in Health Care, 3.6 percent in Consumer, and 2.4 percent in Safety and Graphics. Organic local-currency sales declined 3.7 percent in Electronics and Energy. Acquisitions added 0.8 percent to worldwide growth and currency impacts reduced 2012 worldwide sales growth by 2.4 percent. Worldwide selling prices rose 1.4 percent in 2012, despite selling price declines in 3M’s optical systems business, where prices typically decline each year, which is common for the electronics industry.

In 2011, organic local-currency sales increased 4.7 percent. All major geographic areas showed organic local-currency sales increases, led by Latin America/Canada and the United States. Worldwide organic local-currency sales grew 9.0 percent in Industrial, 5.1 percent in Safety and Graphics, 4.6 percent in Health Care, and 4.0 percent in Consumer. Organic local-currency sales declined 0.5 percent in Electronics and Energy. Acquisitions added 3.3 percent to worldwide growth and currency impacts benefited 2011 worldwide sales growth by 3.1 percent. Worldwide selling prices rose 1.0 percent in 2011, despite selling price declines in 3M’s optical systems business.

Refer to the sections entitled “Performance by Business Segment” and “Performance by Geographic Area” later in MD&A for additional discussion of sales change.

Operating Expenses:

(Percent of net sales)	2012		2011		2010		2012 Versus 2011		2011 Versus 2010
Cost of sales	52.4	%	53.0	%	51.9	%	(0.6	)%	1.1	%
Selling, general and administrative expenses	20.4		20.8		20.5		(0.4	)	0.3
Research, development and related expenses	5.5		5.3		5.4		0.2		(0.1	)
Operating income	21.7	%	20.9	%	22.2	%	0.8	%	(1.3	)%

Pension and postretirement expense increased in both 2012 and 2011. The year-on-year increases for 2012 compared to 2011, and 2011 compared to 2010, were $95 million and $233 million, respectively. The year-on-year increase in 2012 includes a $26 million charge related to the first-quarter 2012 voluntary early retirement incentive program (discussed in Note 10). These increases negatively impacted cost of sales; selling, general and administrative expenses (SG&A); and research, development and related expenses (R&D).

Cost of Sales:

Cost of sales includes manufacturing, engineering and freight costs. Cost of sales, measured as a percent of net sales, was 52.4 percent in 2012, a decrease of 0.6 percentage points from 2011. The net impact of selling price/raw material cost changes was the primary factor that decreased cost of sales as a percent of sales, as selling prices increased 1.4 percent and raw material costs decreased approximately 2 percent. This benefit was partially offset by higher pension and postretirement costs.

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Cost of sales, measured as a percent of net sales, was 53.0 percent in 2011, an increase of 1.1 percentage points from 2010. On a dollar basis, selling price increases largely offset raw material inflation for total year 2011, as selling prices increased 1 percent year-on-year and raw material prices increased approximately 4 percent year-on-year. However, measured as a percent of sales, selling price/raw material impacts accounted for approximately 0.5 percentage points of the cost of sales increase. Cost of sales as a percent of net sales was also negatively impacted by higher pension and postretirement costs. These impacts were partially offset by organic sales volume growth of 3.7 percent.

Selling, General and Administrative Expenses:

Selling, general and administrative (SG&A) expenses decreased $68 million, or 1.1 percent, in 2012 when compared to 2011. In addition to cost-control and other productivity efforts, 3M experienced some savings from its first-quarter 2012 voluntary early retirement incentive program and other restructuring actions. These benefits more than offset increases related to acquisitions, higher year-on-year pension and postretirement expense, and restructuring expenses. SG&A in 2012 included increases from acquired businesses which were not in 3M’s full-year 2011 base spending, primarily related to the 2011 acquisitions of Winterthur Technologie AG and the do-it-yourself and professional business of GPI Group, in addition to SG&A spending related to the 2012 acquisitions of Ceradyne, Inc., Federal Signal Technologies Group, and CodeRyte, Inc. SG&A, measured as a percent of sales, was 20.4 percent in 2012, a decrease of 0.4 percentage points when compared to 2011.

SG&A expenses increased 13 percent in 2011 when compared to 2010, due to several factors. Approximately 5 percentage points of this growth in SG&A was due to increases from acquired businesses not in 3M’s full year 2010 base spending, which primarily related to SG&A spending for the Winterthur Technologie AG, Arizant Inc., Cogent Inc. and Attenti Holdings S.A. acquisitions. Another 3 percentage points of growth in 2011 SG&A was due to foreign exchange effects, which resulted in higher translated costs from 3M’s non-U.S. subsidiaries. Finally, 2011 SG&A increased in part due to higher year-on-year pension and postretirement expense and continued investments to support future growth, such as sales representatives, advertising and promotional investments. SG&A expenses, measured as a percent of net sales, increased 0.3 percentage points in 2011 compared to 2010.

Research, Development and Related Expenses:

Research, development and related expenses (R&D) increased 4.1 percent in 2012 compared to 2011 and increased 9.5 percent in 2011 compared to 2010, as 3M continued to support its key growth initiatives. In 2012, these investments, along with higher pension and postretirement expense, were partially offset by cost-control efforts and savings from 3M’s first-quarter 2012 voluntary early retirement incentive program. In 2011, R&D expense increased versus 2010 due to R&D related to businesses acquired in the last 12 months, foreign exchange effects, and higher pension and postretirement expense, in addition to 3M’s continued investment in new products. R&D, measured as a percent of sales, was 5.5 percent in 2012, compared to 5.3 percent in 2011 and 5.4 percent in 2010.

Operating Income:

3M uses operating income as one of its primary business segment performance measurement tools. Operating income was 21.7 percent of sales in 2012, compared to 20.9 percent of sales in 2011, an improvement of 0.8 percentage points.  The improvement was driven by a 1.6 percentage point benefit from the combination of selling price increases and raw material cost decreases. This was partially offset by increased pension/postretirement benefit costs and acquisition impacts, each of which reduced margins by 0.3 percentage points, and other net impacts, which decreased margins by 0.2 percentage points. Operating income was 20.9 percent of sales in 2011, compared to 22.2 percent of sales in 2010, primarily due to higher cost of sales (as a percent of sales) in 2011 when compared to 2010.

15

Interest Expense and Income:

(Millions)	2012			2011			2010
Interest expense	$	171		$	186		$	201
Interest income	(39		)	(39		)	(38		)
Total	$	132		$	147		$	163

Interest Expense: Interest expense decreased in both 2012 and 2011. The 2012 decrease was driven by lower average international debt balances, while the 2011 decrease was attributable to lower U.S. debt balances. Both years were favorably impacted by lower interest rates on U.S. debt.

Interest Income: In 2012, lower U.S. cash balances and lower interest rates internationally were offset by higher international cash balances and higher interest rates in the U.S. In 2011, interest income increased slightly, as higher international cash balances and better investment yields were largely offset by a lower U.S. cash balance.

Provision for Income Taxes:

(Percent of pre-tax income)	2012		2011		2010
Effective tax rate	29.0	%	27.8	%	27.7	%

The effective tax rate for 2012 was 29.0 percent, compared to 27.8 percent in 2011, an increase of 1.2 percentage points. Various factors increased or decreased the effective tax rate when compared to the same periods last year. The primary factors that increased the Company’s effective tax rate year-on-year include international taxes, specifically with respect to the corporate reorganization of a wholly owned international subsidiary (which benefited 2011), state income taxes, lower domestic manufacturer’s deduction, and the lapse of the U.S. research and development credit. These and other factors, when compared to 2011, increased the 2012 effective tax rate by 2.1 percentage points. Factors that decreased the Company’s effective tax rate year-on-year include international taxes as a result of changes to the geographic mix of income before taxes and adjustments to its income tax reserves. These factors, when compared to last year, decreased the effective tax rate 0.9 percentage points.

The effective tax rate for 2011 was 27.8 percent, compared to 27.7 percent in 2010, an increase of 0.1 percentage points. The year-on-year change in international income taxes increased the effective tax rate for 2011 when compared to 2010 by approximately 2.5 percentage points, which includes a partial offsetting benefit from the corporate reorganization of a wholly owned international subsidiary in 2011. This 2.5 percentage point net increase was due primarily to certain 2010 tax benefits, which did not repeat in 2011, related to net operating losses partially offset by a valuation allowance resulting from the 2010 corporate alignment transactions that allowed the Company to increase its ownership of a foreign subsidiary. These transactions are described in the section of Note 5 entitled “Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interest Involving Non-Wholly Owned Subsidiaries”. Other significant items impacting the year-on-year comparison include a one-time 2010 income tax charge of $84 million, which benefited the 2011 tax rate when compared to 2010 by 1.5 percentage points, as this charge did not repeat in 2011. The Company’s effective tax rate also benefited during 2011 when compared to 2010 by approximately 0.7 percentage points from adjustments to its income tax reserves.

On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law. Included in this Act was the extension of the research and development credit for years 2012 and 2013. As this Act was enacted during 2013, the impacts of this law are not included in the 2012 financial results. The Company anticipates a beneficial impact on the effective tax rate in 2013 for both the 2012 and 2013 research and development credit.

The Company currently expects that its effective tax rate for total year 2013 will be approximately 29.5 to 30.0 percent. The rate can vary from quarter to quarter due to discrete items, such as the settlement of income tax audits and changes in tax laws, as well as recurring factors, such as the geographic mix of income before taxes.

Refer to Note 7 for further discussion of income taxes.

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Net Income Attributable to Noncontrolling Interest:

(Millions)	2012		2011		2010
Net income attributable to noncontrolling interest	$	67	$	74	$	78

Net income attributable to noncontrolling interest represents the elimination of the income or loss attributable to non-3M ownership interests in 3M consolidated entities. The changes in noncontrolling interest amounts are primarily related to Sumitomo 3M Limited (Japan), which is 3M’s most significant consolidated entity with non-3M ownership interests. As of December 31, 2012, 3M’s effective ownership in Sumitomo 3M Limited is 75 percent.

Currency Effects:

3M estimates that year-on-year currency effects, including hedging impacts, decreased net income attributable to 3M by approximately $103 million in 2012 and increased net income attributable to 3M by approximately $154 million in 2011. These estimates include the effect of translating profits from local currencies into U.S. dollars; the impact of currency fluctuations on the transfer of goods between 3M operations in the United States and abroad; and transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of swapping Venezuelan bolivars into U.S. dollars. 3M estimates that year-on-year derivative and other transaction gains and losses increased net income attributable to 3M by approximately $49 million in 2012 and had an immaterial impact on net income attributable to 3M in 2011.

PERFORMANCE BY BUSINESS SEGMENT

Disclosures relating to 3M’s business segments are provided in Item 1, Business Segments. Financial information and other disclosures are provided in the Notes to the Consolidated Financial Statements. As discussed in Note 15, effective in the first quarter of 2013, the Company completed a realignment of its business segments to better serve global markets and customers. Segment information presented herein reflects the impacts of these changes for all periods presented. The reportable segments are Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. Information related to 3M’s business segments is presented in the tables that follow. Organic local-currency sales include both organic volume impacts plus selling price impacts. Acquisition impacts are measured separately for the first twelve months of the acquisition. The acquisition and divestiture impacts, if any, foreign currency translation impact and total sales change are also provided for each business segment. Any references to EMEA relate to Europe, Middle East and Africa on a combined basis.

In addition to these five operating business segments, 3M assigns certain costs to “Corporate and Unallocated,” which is presented separately in the preceding business segments table and in Note 15. Corporate and unallocated includes a variety of miscellaneous items, such as corporate investment gains and losses, certain derivative gains and losses, certain insurance-related gains and losses, certain litigation and environmental expenses, corporate restructuring charges and certain under- or over-absorbed costs (e.g. pension, stock-based compensation) that the Company may choose not to allocate directly to its business segments. Because this category includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis. The primary items driving higher expenses in Corporate and Unallocated in 2012 when compared to 2011 were pension and postretirement expense, as a portion of the 2012 increase in these expenses were not allocated directly to the five operating business segments ($63 million), and the impact of an increase in other environmental insurance receivables, which benefited 2012 by $15 million (as discussed in Note 13). The impacts of changes in respirator mask/asbestos liabilities and receivables netted to a $32 million charge in 2012, which was similar to 2011, resulting in a minimal year-on-year effect. The primary item driving higher 2011 expenses when compared to 2010 relates to pension and postretirement expense, as a portion of the 2011 increase in these expenses was not allocated directly to the five operating business segments.

The following discusses total year results for 2012 compared to 2011, and also discusses 2011 compared to 2010, for each business segment.

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Industrial Business (33.2% of consolidated sales):

	2012			2011			2010
Sales (millions)	$	9,943		$	9,629		$	8,116
Sales change analysis:
Organic local currency	5.2		%	9.0		%	15.6		%
Acquisitions	1.1			6.1			0.2
Translation	(3.0		)	3.5			1.1
Total sales change	3.3		%	18.6		%	16.9		%
Operating income (millions)	$	2,236		$	1,983		$	1,720
Percent change	12.8		%	15.3		%	41.3		%
Percent of sales	22.5		%	20.6		%	21.2		%

The Industrial segment serves a broad range of markets, such as automotive original equipment manufacturer (OEM) and automotive aftermarket (auto body shops and retail), electronics, paper and packaging, food and beverage, and appliance. Industrial products include tapes, a wide variety of coated and non-woven abrasives, adhesives, specialty materials, filtration products, closure systems for personal hygiene products, acoustic systems products, and components and products that are used in the manufacture, repair and maintenance of automotive, marine, aircraft and specialty vehicles.

Year 2012 results:

Sales in Industrial totaled $9.9 billion, up 3.3 percent in U.S. dollars. Organic local-currency sales increased 5.2 percent, acquisitions added 1.1 percent, and foreign currency translation reduced sales by 3.0 percent. Acquisitions growth was primarily driven by Winterthur Technologie AG (Winterthur) in the abrasives market, Ceradyne, Inc. (Ceradyne) in the advanced technical ceramics market, and Alpha Beta Enterprise Co. Ltd. (Alpha Beta) in industrial tapes, all of which are discussed further below. On an organic local-currency basis, sales growth was strongest in automotive OEM, aerospace, abrasives and filtration.

Geographically, organic local-currency sales increased 8 percent in the United States, 7 percent in Latin America/Canada, 5 percent in Asia Pacific, and 1 percent in EMEA.

Operating income was $2.2 billion in 2012, 12.8 percent higher than 2011, with the primary benefit related to the combination of selling price increases and raw material cost decreases. Operating income growth was led by the United States. Operating income margins increased by 1.9 percentage points to 22.5 percent.

As disclosed in Note 2, in November 2012, 3M acquired Ceradyne, Inc. (Ceradyne), which is headquartered in Costa Mesa, California. Ceradyne is involved in the development and production of advanced technical ceramics for demanding applications in the automotive, oil and gas, solar, industrial, electronics and defense industries.

Year 2011 results:

Sales in Industrial increased 18.6 percent to $9.6 billion, with 9.0 percent of this increase attributable to organic local-currency growth. Acquisitions increased sales by 6.1 percent, primarily driven by Winterthur and Alpha Beta (discussed below). Foreign currency impacts added 3.5 percent to 2011 sales growth. Geographically, sales increased in all major regions, led by Asia Pacific and Europe. Organic local-currency sales growth was broad-based across the portfolio, led by aerospace and aircraft maintenance, advanced materials, abrasives systems, and industrial adhesives and tapes. In addition, despite the Japan and Thailand natural disasters, 3M also achieved growth in its automotive aftermarket and automotive OEM businesses.

3M continued to invest in its Industrial business. In March 2011, 3M acquired a controlling interest in Winterthur via completion of a public tender offer. Winterthur, based in Zug, Switzerland, is a leading global supplier of precision grinding technology serving customers in the area of hard-to-grind precision applications in industrial, automotive, aircraft, and cutting tools. In addition, in February 2011, 3M completed its acquisition of the tape-related assets of Alpha Beta, a leading manufacturer of box sealing tape and masking tape headquartered in Taipei, Taiwan.

Operating income was $2.0 billion in 2011, 15.3 percent higher than 2010. 3M achieved operating income margins of 20.6 percent, even with continued investments to support growth.

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Investment:

In March 2005, 3M’s automotive business completed the purchase of 19 percent of TI&M Beteiligungsgesellschaft mbH (TI&M) for approximately $55 million. TI&M is the parent company of I&T Innovation Technology Entwicklungsund Holding Aktiengesellschaft (I&T), an Austrian maker of flat flexible cable and circuitry. Pursuant to a Shareholders Agreement, 3M marketed I&T’s flat flexible wiring systems for automotive interior applications to the global automotive market. I&T filed a petition for bankruptcy protection in August 2006. As part of its agreement to purchase the shares of TI&M, the Company was granted a put option that gave the Company the right to sell back its entire ownership interest in TI&M to the other investors from whom the Company acquired its 19 percent interest. The put option became exercisable January 1, 2007. The Company exercised the put option and recovered approximately $25 million of its investment from one of the investors based in Belgium in February 2007. The other two TI&M investors from whom the Company purchased its shares filed a bankruptcy petition in Austria in January 2007. The Company has recovered approximately 6.7 million Euros through the Austrian bankruptcy process. The Company then pursued recovery from the bank that held the 3M purchase price paid to the two bankrupt investors, and in March 2012 recovered 4.5 million Euros, leaving a balance of 7.4 million Euros (approximately $10 million). In September 2012, 3M Austria commenced proceedings in the Commercial Court of Vienna against the co-sellers of the shares to recover the remaining balance plus accrued interest pursuant to the terms of the Share Purchase Agreement and Austrian law. The Company believes collection of its remaining investment is probable and, as a result, no impairment reserve has been recorded.

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Safety and Graphics Business (18.3% of consolidated sales):

	2012			2011			2010
Sales (millions)	$	5,471		$	5,458		$	4,873
Sales change analysis:
Organic local currency	2.4		%	5.1		%	6.7		%
Acquisitions	0.6			3.3			0.8
Translation	(2.8		)	3.6			0.9
Total sales change	0.2		%	12.0		%	8.4		%
Operating income (millions)	$	1,217		$	1,237		$	1,138
Percent change	(1.6		)%	8.7		%	5.8		%
Percent of sales	22.3		%	22.7		%	23.3		%

The Safety and Graphics segment serves a broad range of markets that increase the safety, security and productivity of people, facilities and systems. Major product offerings include personal protection products; traffic safety and security products, including border and civil security solutions; commercial graphics sheeting and systems; architectural surface and lighting solutions; cleaning and protection products for commercial establishments, roofing granules for asphalt shingles, and track and trace solutions.

Year 2012 results:

Sales in Safety and Graphics were $5.5 billion, up 0.2 percent in U.S. dollars. Organic local-currency sales increased 2.4 percent, led by architectural markets, personal safety, and commercial graphics, with growth also in building and commercial services, and roofing granules. Organic local-currency sales declined in traffic safety and security. Acquisitions sales growth of 0.6 percent related to the September 2012 purchase of assets that comprised the business of Federal Signal Technologies Group from Federal Signal Corp. This business focuses on electronic toll collection and parking management hardware and software services. Foreign currency translation reduced sales by 2.8 percent.

Organic local-currency sales declined in traffic safety and security, as government spending for security solutions has been declining over the last few years. As discussed later in the “Critical Accounting Estimates” section, 3M will continue to monitor this business to assess whether long-term expectations have been significantly impacted such that an asset or goodwill impairment test would be required. The Company completed its annual goodwill impairment test in the fourth quarter of 2012, with no impairment indicated.

Geographically, organic local-currency sales increased 16 percent in Latin America/Canada and 1 percent in both the United States and Asia Pacific. Organic local-currency sales declined 2 percent in EMEA.

Operating income in 2012 totaled $1.2 billion, down 1.6 percent. Operating income margins were 22.3 percent of sales, compared to 22.7 percent in 2011. The year-on-year decline in operating income dollars and margins was attributable to softness in traffic safety and security, which has been impacted by lower government spending.

Year 2011 results:

Sales in Safety and Graphics were $5.5 billion in 2011, an increase of 12.0 percent in U.S. dollars. H1N1-related comparisons reduced 2011 sales growth by 1.6 percent, as 3M generated sales related to the H1N1 virus in the first three quarters of 2010. Even with this difficult comparison, organic local-currency sales increased 5.1 percent. Acquisitions added 3.3 percent to sales growth, with this benefit primarily related to Attenti Holdings S.A. and Cogent Inc., which were acquired in the fourth quarter of 2010. Attenti Holdings S.A. is a supplier of remote people-monitoring technologies used for offender-monitoring applications and to assist eldercare facilities in monitoring and enhancing the safety of patients. Cogent Inc. is a provider of finger, palm, face and iris biometric systems for governments, law enforcement agencies, and commercial enterprises. Foreign currency impacts increased sales by 3.6 percent. All geographic regions posted positive sales growth, with sales growth led by Latin America/Canada, Asia Pacific and the U.S. These three regions all had sales growth in excess of 14 percent.

Organic local-currency sales growth was led by personal protection products, architectural markets, commercial graphics, and building and commercial services. Traffic safety and security systems posted sales growth, albeit all acquisition and currency related. Sales growth in personal protection products, or more specifically, respiratory products, was hampered by H1N1-related comparisons, partially offset by some modest additional sales of personal protective equipment related to the cleanup efforts in Japan.

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Operating income in 2011 totaled $1.2 billion, up 8.7 percent from 2010. 3M achieved 22.7 percent operating income margins in this business segment, despite H1N1-related comparisons that negatively impacted results.

Electronics and Energy Business (18.3% of consolidated sales):

	2012			2011			2010
Sales (millions)	$	5,458		$	5,732		$	5,632
Sales change analysis:
Organic local currency	(3.7		)%	(0.5		)%	31.8		%
Divestitures	—			—			(0.3		)
Translation	(1.1		)	2.3			1.3
Total sales change	(4.8		)%	1.8		%	32.8		%
Operating income (millions)	$	1,026		$	1,140		$	1,207
Percent change	(10.0		)%	(5.5		)%	100.8		%
Percent of sales	18.8		%	19.9		%	21.4		%

The Electronics and Energy segment serves customers in the electronics and energy markets, including solutions for dependable, cost-effective, high-performance electronic devices, telecommunications networks, electrical products, power generation and distribution, and infrastructure protection. This segment’s electronics solutions include optical film solutions for the electronic display industry; projection solutions for the world’s office and education markets; packaging and interconnection devices; high performance fluids and abrasives; high-temperature and display tapes; 3M™ Flexible Circuits, which use electronic packaging and interconnection technology; and the touch systems business, which includes touch screens, touch monitors, and touch sensor components. This segment’s energy solutions include pressure sensitive tapes and resins; electrical insulation; a wide array of fiber-optic and copper-based telecommunications systems; renewable energy component solutions for the solar and wind power industries; and infrastructure products that provide both protection and detection solutions.

The optical film business provides films that serve numerous market segments of the electronic display industry. 3M provides distinct products for five market segments, including products for: 1) LCD computer monitors 2) LCD televisions 3) handheld devices such as cellular phones and tablets 4) notebook PCs and 5) automotive displays. The optical business includes a number of different products that are protected by various patents and groups of patents. These patents provide varying levels of exclusivity to 3M for a number of such products. As some of 3M’s optical film patents expire at the end of 2013 and over several years thereafter, 3M will likely see more competition in these products. 3M continues to innovate in the area of optical films and files patents on its new technology and products. 3M’s proprietary manufacturing technology and know-how also provide a competitive advantage to 3M independent of its patents.

Year 2012 results:

Electronics and Energy sales totaled $5.5 billion, down 4.8 percent in U.S. dollars. Organic local-currency sales declined 3.7 percent and foreign currency translation reduced sales by 1.1 percent. Organic local-currency sales declined in the consumer electronics-related businesses, including a 9 percent decline in optical systems, driven by lower optical film volumes for LCD TVs. In addition, organic local-currency sales declined in the renewable energy and telecommunications markets business. Organic local-currency sales increased in 3M’s touch systems, infrastructure protection, and electrical markets businesses.

On a geographic basis, organic local-currency sales increased 14 percent in Latin America/Canada and 3 percent in the United States. Organic local-currency sales declined 6 percent in EMEA and 7 percent in Asia Pacific.

Operating income decreased 10.0 percent to $1.0 billion in 2012. Operating income margins were 18.8 percent, compared to 19.9 percent in 2011. The year-on-year decline was largely attributable to the decline in optical systems.

Year 2011 results:

Electronics and Energy sales were $5.7 billion in 2011, an increase of 1.8 percent in U.S. dollars. Organic local-currency sales decreased 0.5 percent. Foreign currency impacts added 2.3 percent to 2011 sales growth. On a geographic basis, organic local-currency sales increased 9 percent in EMEA, 7 percent in the United States, and 6 percent in Latin America/Canada. Organic local-currency sales declined 5 percent in Asia Pacific, where the decline in optical systems was a major factor. From a business standpoint, sales growth was led by renewable energy, electronics markets

21

materials, infrastructure protection, and electrical markets. The telecom business also posted solid sales growth, while sales declined in the optical systems and electronic solutions businesses. Optical Systems sales decreased 16 percent due to lower year-on-year LCD TV-related sales over the last three quarters of 2011.

Operating income declined 5.5 percent to $1.1 billion in 2011. Operating income margins were 19.9 percent, compared to 21.4 percent in 2010, as productivity improvements helped to partially offset negative impacts from lower sales of optical films for LCD TVs, impacted by LCD TV volume reductions, as well as continued LCD selling price declines.

Health Care Business (17.2% of consolidated sales):

	2012			2011			2010
Sales (millions)	$	5,138		$	5,011		$	4,492
Sales change analysis:
Organic local currency	4.7		%	4.6		%	4.1		%
Acquisitions	0.3			3.8			1.2
Divestitures	—			—			(0.2		)
Translation	(2.5		)	3.1			0.3
Total sales change	2.5		%	11.5		%	5.4		%
Operating income (millions)	$	1,641		$	1,484		$	1,357
Percent change	10.5		%	9.4		%	1.1		%
Percent of sales	31.9		%	29.6		%	30.2		%

The Health Care segment serves markets that include medical clinics and hospitals, pharmaceuticals, dental and orthodontic practitioners, health information systems, and food manufacturing and testing. Products and services provided to these and other markets include medical and surgical supplies, skin health and infection prevention products, inhalation and transdermal drug delivery systems, dental and orthodontic products (oral care), health information systems, and food safety products.

Year 2012 results:

Health Care sales totaled $5.1 billion, an increase of 2.5 percent in U.S. dollars. Organic local-currency sales increased 4.7 percent, led by food safety, health information systems, and critical and chronic care solutions. Sales declined year-on-year in drug delivery systems. Acquisitions added 0.3 percent, as 3M further strengthened its health information systems business in April 2012 by acquiring CodeRyte, Inc., which provides clinical natural language processing technology and computer-assisted coding solutions for outpatient providers. Foreign currency translation reduced sales by 2.5 percent.

On a geographic basis, organic local-currency sales increased 12.5 percent in Latin America/Canada, 10 percent in Asia Pacific, 4 percent in the United States, and 1 percent in EMEA.

Operating income increased 10.5 percent to $1.6 billion. Operating income margins were 31.9 percent in 2012 compared to 29.6 percent in 2011, driven by strong manufacturing cost control, improved utilization and production efficiencies. Operating income grew in all major geographic areas.

Year 2011 results:

Health Care sales increased 11.5 percent to $5.0 billion. Organic local-currency sales increased 4.6 percent and acquisition added 3.8 percent. Acquisition growth primarily related to Arizant Inc., a leading manufacturer of patient warming solutions designed to prevent hypothermia in surgical settings. Currency impacts increased sales by 3.1 percent in Health Care. On a geographic basis, all regions posted positive sales growth. Asia Pacific, Latin America/Canada, and Europe all reported sales growth of 10 percent or more, while the U.S. grew at 9 percent. Organic local-currency sales growth increased in the food safety, health information systems, infection prevention, critical and chronic care, and oral care businesses. Sales in the drug-delivery systems business increased in the fourth quarter of 2011 compared to the same period in 2010, but were down slightly for total-year 2011 when compared to 2010.

Operating income in Health Care increased 9.4 percent in 2011 to $1.5 billion. Operating income margins were 29.6 percent, compared to 30.2 percent in 2010, with this decrease due in part to growth investments in the health information systems and infection prevention businesses. 3M also invested in emerging markets to improve market penetration levels. The year-on-year decline in operating income margins was also due in part to sales declines in drug delivery systems.

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Consumer Business (14.7% of consolidated sales):

	2012			2011			2010
Sales (millions)	$	4,386		$	4,230		$	3,926
Sales change analysis:
Organic local currency	3.6		%	4.0		%	7.3		%
Acquisitions	2.0			1.3			2.9
Translation	(1.9		)	2.4			1.0
Total sales change	3.7		%	7.7		%	11.2		%
Operating income (millions)	$	943		$	855		$	859
Percent change	10.3		%	(0.5		)%	13.2		%
Percent of sales	21.5		%	20.2		%	21.9		%

The Consumer segment serves markets that include consumer retail, office retail, home improvement, building maintenance and other markets. Products in this segment include office supply products, stationery products, construction and home improvement products (do-it-yourself), home care products, protective material products, certain consumer retail personal safety products, and consumer health care products.

Year 2012 results:

Sales in Consumer totaled $4.4 billion, up 3.7 percent in U.S. dollars. Organic local-currency sales increased 3.6 percent, acquisitions added 2.0 percent, and foreign currency translation reduced sales by 1.9 percent. Organic local-currency sales growth was led by the consumer health care and construction and home improvement businesses. Organic local-currency sales increased slightly in stationery and office supplies, impacted by continued softness in the office wholesale and retail markets. Acquisition growth was largely due to the October 2011 acquisition of the do-it-yourself and professional business of GPI Group. GPI is a manufacturer and marketer of home improvement products such as tapes, hooks, insulation and floor protection products and accessories. The addition of GPI’s products expands 3M’s product portfolio in core and complementary categories in the construction and home improvement markets.

On a geographic basis, organic local-currency sales increased 10 percent in Latin America/Canada, and 4 percent in both Asia Pacific and the United States. EMEA organic local-currency sales decreased 2 percent.

Consumer operating income increased 10.3 percent to $943 million. Operating income margins were 21.5 percent, compared to 20.2 percent in 2011, as all businesses and major geographic areas posted operating income increases. Consumer benefited from the combination of selling price increases and raw material cost decreases, in addition to cost-control efforts.

In December 2011, 3M (Consumer Business) entered into a definitive agreement to acquire the Office and Consumer Products business of Avery Dennison Corp. (Avery). 3M and Avery withdrew from the regulatory approval process for this acquisition in September 2012 and subsequently announced that they had terminated this agreement in October 2012.

Year 2011 results:

Sales in Consumer increased 7.7 percent in 2011 to $4.2 billion, with all businesses posting positive sales growth. Organic local-currency sales increased 4.0 percent and acquisitions added 1.3 percent. Acquisition growth was largely due to the October 2011 acquisition of the do-it-yourself and professional business of GPI Group and the April 2010 acquisition of the A-One branded label business and related operations. A-One is the largest branded label business in Asia and the second largest worldwide. 3M also acquired Hybrivet Systems Inc. in the first quarter of 2011, a provider of instant-read products to detect lead and other contaminants and toxins. Foreign currency impacts contributed 2.4 percent to sales growth in the Consumer segment.

On a geographic basis, sales increased in all regions, led by Asia Pacific, Latin America/Canada and Europe, which all had sales growth rates in excess of 10 percent. U.S. sales also grew, albeit at a slower rate.

Consumer operating income was down slightly when comparing 2011 to 2010, reflecting continued ongoing investments in developing economies in brand development and marketing and sales coverage. Even with these investments, Consumer generated operating income margins of 20.2 percent.

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PERFORMANCE BY GEOGRAPHIC AREA

While 3M manages its businesses globally and believes its business segment results are the most relevant measure of performance, the Company also utilizes geographic area data as a secondary performance measure. Export sales are generally reported within the geographic area where the final sales to 3M customers are made. A portion of the products or components sold by 3M’s operations to its customers are exported by these customers to different geographic areas. As customers move their operations from one geographic area to another, 3M’s results will follow. Thus, net sales in a particular geographic area are not indicative of end-user consumption in that geographic area. Financial information related to 3M operations in various geographic areas is provided in Note 16. As discussed in Note 16, during the first quarter of 2013, 3M realigned its geographic area structure to include Puerto Rico in the United States rather than in the Latin America/Canada region. Geographic area information presented herein reflects the impact of this change for all periods presented.

A summary of key information and discussion related to 3M’s geographic areas follow:

	2012
	United States			Asia Pacific			Europe, Middle East & Africa			Latin America/ Canada			Other Unallocated			Worldwide
Net sales (millions)	$	10,571		$	9,092		$	6,730		$	3,529		$	(18	)	$	29,904
% of worldwide sales	35.3		%	30.4		%	22.5		%	11.8		%	—			100.0		%
Components of net sales change:
Volume — organic	2.1		%	1.3		%	(2.8		)%	7.0		%	—			1.2		%
Price	2.1			(1.2		)	2.2			4.1			—			1.4
Organic local-currency sales	4.2			0.1			(0.6		)	11.1			—			2.6
Acquisitions	0.8			0.3			1.9			0.1			—			0.8
Translation	—			(0.6		)	(6.2		)	(6.4		)	—			(2.4		)
Total sales change	5.0		%	(0.2		)%	(4.9		)%	4.8		%	—			1.0		%
Operating income (millions)	$	1,938		$	2,450		$	1,163		$	936		$	(4	)	$	6,483
Percent change	18.2		%	(2.9		)%	1.2		%	5.6		%	—			4.9		%

For total year 2012, as shown in the preceding table, sales rose 1.0 percent, with organic volume increases of 1.2 percent and selling price increases of 1.4 percent. Acquisitions added 0.8 percent, while foreign currency effects reduced sales by 2.4 percent. Organic local-currency sales growth was led by Latin America/Canada at 11.1 percent and the United States at 4.2 percent. Organic local-currency sales increased in Asia Pacific by 0.1 percent and declined in EMEA by 0.6 percent. For 2012, international operations represented 64.7 percent of 3M’s sales.

	2011
	United States			Asia Pacific			Europe, Middle East & Africa			Latin America/ Canada			Other Unallocated			Worldwide
Net sales (millions)	$	10,071		$	9,108		$	7,076		$	3,368		$	(12	)	$	29,611
% of worldwide sales	34.0		%	30.7		%	23.9		%	11.4		%	—			100.0		%
Components of net sales change:
Volume — organic	3.9		%	3.5		%	1.6		%	7.7		%	—			3.7		%
Price	1.9			(1.4		)	1.6			3.5			—			1.0
Organic local-currency sales	5.8			2.1			3.2			11.2			—			4.7
Acquisitions	3.0			3.5			4.6			1.1			—			3.3
Translation	—			4.7			5.3			3.6			—			3.1
Total sales change	8.8		%	10.3		%	13.1		%	15.9		%	—			11.1		%
Operating income (millions)	$	1,639		$	2,523		$	1,150		$	886		$	(20	)	$	6,178
Percent change	(0.4		)%	5.1		%	3.4		%	12.6		%	—			4.4		%

For total year 2011, as shown in the preceding table, sales rose 11.1 percent, with organic volume increases of 3.7 percent, selling price increases of 1.0 percent, acquisitions of 3.3 percent, and foreign currency effects of 3.1 percent. Every major geographic region expanded sales, with organic local-currency sales in Latin America/Canada up 11.2

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percent, the United States up 5.8 percent, Europe, Middle East and Africa up 3.2 percent, and Asia Pacific up 2.1 percent. For 2011, international operations represented 66.0 percent of 3M’s sales.

Geographic Area Supplemental Information

	Employees as of December 31,			Capital Spending						Property, Plant and Equipment - net as of December 31,
(Millions, except Employees)	2012	2011	2010	2012		2011		2010		2012		2011
United States	34,851	33,246	33,087	$	816	$	688	$	569	$	4,279	$	3,980
Asia Pacific	18,210	18,015	16,324	332		409		290		2,029		1,887
Europe, Middle East and Africa	20,638	20,113	18,120	226		180		151		1,499		1,271
Latin America and Canada	13,978	12,824	12,526	110		102		81		571		528
Total Company	87,677	84,198	80,057	$	1,484	$	1,379	$	1,091	$	8,378	$	7,666

Employment:

Employment increased by 3,479 positions in 2012 and 4,141 positions in 2011. Acquisitions increased employment by approximately 2,500 and 2,250 full-time equivalents for 2012 and 2011, respectively. In addition, the other primary factor that increased employment in both years was additions in developing economies to support growth.

Capital Spending/Net Property, Plant and Equipment:

Investments in property, plant and equipment enable growth across many diverse markets, helping to meet product demand and increasing manufacturing efficiency. Capital spending was $1.484 billion in 2012, compared to $1.379 billion in 2011 and $1.091 billion in 2010. The Company expects 2013 capital spending to be approximately $1.6 to $1.8 billion, as 3M continues to invest in its businesses. In 2012, 3M expanded manufacturing capacity in key growth markets, particularly with respect to international and emerging market countries. This included investments in China, Turkey and Poland, in addition to investments in Singapore and the U.S. 3M also increased investments in IT systems and infrastructure and made strategic investments in research/development infrastructure and manufacturing sites to lay the foundation for future growth. In 2011, a large portion of the capital investment was used to address supply constraints in a number of businesses with significant growth potential, such as renewable energy, traffic signage in developing economies, and optically clear adhesives and glass bubbles. In addition, some of the following 2010 capital projects carried forward into 2011. In 2010, in the U.S., 3M invested in film manufacturing assets for optical systems and other non-optical businesses which use similar technology. Also, in 2010, 3M increased capacity at its multi-purpose manufacturing facility in Singapore and invested in optical film capacity in Korea. Lastly, in 2010, additional investments included solar energy in the U.S. and industrial adhesives and tapes in China.

3M is striving to increase its manufacturing and sourcing capacity, particularly in developing economies, in order to more closely align its production capability with its sales in major geographic regions. The initiative is expected to help improve customer service, lower transportation costs, and reduce working capital requirements. 3M will continue to make investments in critical emerging markets, such as China and India, including plans to establish and begin production in a new wholly-owned manufacturing entity in India to serve as a source of supply to 3M’s business in India and in other countries.

CRITICAL ACCOUNTING ESTIMATES

Information regarding significant accounting policies is included in Note 1. As stated in Note 1, the preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. Management bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.

The Company believes its most critical accounting estimates relate to legal proceedings, the Company’s pension and postretirement obligations, asset impairments and income taxes. Senior management has discussed the development, selection and disclosure of its critical accounting estimates with the Audit Committee of 3M’s Board of Directors.

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Legal Proceedings:

The categories of claims for which the Company has a probable and estimable liability, the amount of its liability accruals, and the estimates of its related insurance receivables are critical accounting estimates related to legal proceedings. Please refer to the section entitled “Process for Disclosure and Recording of Liabilities and Insurance Receivables Related to Legal Proceedings” (contained in “Legal Proceedings” in Note 13) for additional information about such estimates.

Pension and Postretirement Obligations:

3M has various company-sponsored retirement plans covering substantially all U.S. employees and many employees outside the United States. The U.S. defined-benefit pension plan was closed to new participants effective January 1, 2009. The Company accounts for its defined benefit pension and postretirement health care and life insurance benefit plans in accordance with Accounting Standard Codification (ASC) 715, Compensation — Retirement Benefits, in measuring plan assets and benefit obligations and in determining the amount of net periodic benefit cost. ASC 715 requires employers to recognize the underfunded or overfunded status of a defined benefit pension or postretirement plan as an asset or liability in its statement of financial position and recognize changes in the funded status in the year in which the changes occur through accumulated other comprehensive income, which is a component of stockholders’ equity. While the company believes the valuation methods used to determine the fair value of plan assets 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 estimate of fair value at the reporting date.

Pension benefits associated with these plans are generally based primarily on each participant’s years of service, compensation, and age at retirement or termination. Two critical assumptions, the discount rate and the expected return on plan assets, are important elements of expense and liability measurement. See Note 10 for additional discussion of actuarial assumptions used in determining pension and postretirement health care liabilities and expenses.

The Company determines the discount rate used to measure plan liabilities as of the December 31 measurement date for its pension and postretirement benefit plans. The discount rate reflects the current rate at which the associated liabilities could be effectively settled at the end of the year. The Company sets its rate to reflect the yield of a portfolio of high quality, fixed-income debt instruments that would produce cash flows sufficient in timing and amount to settle projected future benefits. Using this methodology, the Company determined a discount rate of 4.14% for U.S. pension and 4.00% for U.S. postretirement benefits to be appropriate as of December 31, 2012, which represents a decrease from the 4.15% and 4.04% rates, respectively, used as of December 31, 2011. The weighted average discount rate for international pension plans as of December 31, 2012 was 3.78%, a decrease from the 4.58% rate used as of December 31, 2011.

A significant element in determining the Company’s pension expense in accordance with ASC 715 is the expected return on plan assets, which is based on historical results for similar allocations among asset classes. For the U.S. pension plan, the 2013 expected long-term rate of return on an annualized basis for 2013 is 8.00%, a 0.25% decrease from 2012. Refer to Note 10 for information on how the 2013 rate was determined. Return on assets assumptions for international pension and other post-retirement benefit plans are calculated on a plan-by-plan basis using plan asset allocations and expected long-term rate of return assumptions. The weighted average expected return for the international pension plan is 5.87% for 2013, compared to 6.38% for 2012.

For the year ended December 31, 2012, the Company recognized total consolidated pre-tax pension and postretirement expense (after settlements, curtailments and special termination benefits) of $650 million, up from $555 million in 2011. Pension and postretirement expense (before settlements, curtailments and special termination benefits) is anticipated to decrease to approximately $550 million in 2013, a decrease of $100 million compared to 2012. For the pension plans, holding all other factors constant, a 0.25 percentage point increase/decrease in the expected long-term rate of return on plan assets would decrease/increase 2013 pension expense by approximately $33 million for U.S. pension plans and approximately $13 million for international pension plans. Also, holding all other factors constant, a 0.25 percentage point increase in the discount rate used to measure plan liabilities would decrease 2013 pension expense by approximately $37 million for U.S. pension plans and approximately $19 million for international pension plans. In addition, a 0.25 percentage point decrease in the discount rate used to measure plan liabilities would increase 2013 pension expense by approximately $39 million for U.S. pension plans and approximately $21 million for international pension plans.

Asset Impairments:

As of December 31, 2012, net property, plant and equipment totaled $8.4 billion and net identifiable intangible assets totaled $1.9 billion. Management makes estimates and assumptions in preparing the consolidated financial statements for

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which actual results will emerge over long periods of time. This includes the recoverability of long-lived assets employed in the business, including assets of acquired businesses. These estimates and assumptions are closely monitored by management and periodically adjusted as circumstances warrant. For instance, expected asset lives may be shortened or an impairment recorded based on a change in the expected use of the asset or performance of the related asset group.

3M goodwill totaled approximately $7.4 billion as of December 31, 2012. 3M’s annual goodwill impairment testing is performed in the fourth quarter of each year. Impairment testing for goodwill is done at a reporting unit level, with all goodwill assigned to a reporting unit. Reporting units are one level below the business segment level, but can be combined when reporting units within the same segment have similar economic characteristics. At 3M, reporting units generally correspond to a division. 3M did not combine any of its reporting units for impairment testing.

An impairment loss generally would be recognized when the carrying amount of the reporting unit’s net assets exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using earnings for the reporting unit multiplied by a price/earnings ratio for comparable industry groups, or by using a discounted cash flow analysis. 3M typically uses the price/earnings ratio approach for stable and growing businesses that have a long history and track record of generating positive operating income and cash flows. 3M uses the discounted cash flow approach for start-up, loss position and declining businesses, but also uses discounted cash flow as an additional tool for businesses that may be growing at a slower rate than planned due to economic or other conditions.

As discussed in Notes 3 and 15 to the Consolidated Financial Statements, effective in the first quarter of 2013, 3M completed a realignment of its business segments. Concurrent with this business segment realignment, certain products were also moved between business segments. For any product moves that resulted in reporting unit changes, the Company applied the relative fair value method to determine the impact on goodwill of the associated reporting units. During the first quarter of 2013, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed. The discussion that follows relates to the separate fourth quarter 2012 annual impairment test and is in the context of the segment and reporting unit structure that existed at that time.

As of September 30, 2012, 3M had 36 primary reporting units, with ten reporting units accounting for approximately 77 percent of the goodwill. These ten reporting units were comprised of the following divisions: 3M Purification Inc., Occupational Health and Environmental Safety, Optical Systems, Security Systems, Infection Prevention, 3M ESPE, Industrial Adhesives and Tapes, Communication Markets, Health Information Systems, and Abrasive Systems. The fair values for all these significant reporting units were in excess of carrying value by approximately 50 percent or more.

In 2012, 3M primarily used an industry price-earnings ratio approach, but also used a discounted cash flows approach for certain reporting units, to determine fair values. Where applicable, 3M used a weighted-average discounted cash flow analysis for certain divisions, using projected cash flows that were weighted based on different sales growth and terminal value assumptions, among other factors. The weighting was based on management’s estimates of the likelihood of each scenario occurring.

Based on fourth-quarter 2012 testing, 3M’s estimated fair value when valuing each reporting unit individually would aggregate to approximately $77 billion, implying a control premium of 21 percent when compared to 3M’s market value of approximately $64 billion at both September 30, 2012 and December 31, 2012. The control premium is defined as the sum of the individual reporting units estimated market values compared to 3M’s total Company estimated fair value, with the sum of the individual values typically being larger than the value for the total Company. 3M’s market value at both September 30, 2012 and December 31, 2012 was significantly in excess of its equity of approximately $18 billion. 3M is an integrated materials enterprise, thus many of 3M’s businesses could not easily be sold on a stand-alone basis. 3M’s focus on research and development has resulted in a portion of 3M’s value being comprised of internally developed businesses that have no goodwill associated with them. Based on its annual test in the fourth quarter of 2012, no goodwill impairment was indicated for any of the reporting units.

Factors which could result in future impairment charges include, among others, changes in worldwide economic conditions, changes in competitive conditions and customer preferences, and fluctuations in foreign currency exchange rates. These risk factors are discussed in Item 1A, “Risk Factors,” of this document. In addition, changes in the weighted average cost of capital could also impact impairment testing results. Given the current overall economic and other conditions in markets served by certain reporting units and asset groups within these reporting units (particularly Security Systems Division), 3M will continue to monitor conditions to assess whether long term expectations have been significantly impacted such that future interim impairment tests would be required. As of December 31, 2012, 3M had approximately $600 million of goodwill and approximately $300 million of long-lived assets related to Security Systems. As discussed in Note 15 to the Consolidated Financial Statements, in connection with the segment realignment effective in

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the first quarter of 2013, the Security Systems Division was combined with the former Traffic Safety Systems Division resulting in the combined Traffic Safety and Security Division. As indicated above, during the first quarter of 2013, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed. Long-lived assets with a definite life are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. If future non-cash asset impairment charges are taken, 3M would expect that only a portion of the long-lived assets or goodwill would be impaired. 3M will continue to monitor its reporting units and asset groups in 2013 for any triggering events or other indicators of impairment.

Income Taxes:

The extent of 3M’s operations involves dealing with uncertainties and judgments in the application of complex tax regulations in a multitude of jurisdictions. The final taxes paid are dependent upon many factors, including negotiations with taxing authorities in various jurisdictions and resolution of disputes arising from federal, state, and international tax audits. The Company recognizes potential liabilities and records tax liabilities for anticipated tax audit issues in the United States and other tax jurisdictions based on its estimate of whether, and the extent to which, additional taxes will be due. The Company follows guidance provided by ASC 740, Income Taxes, regarding uncertainty in income taxes, to record these liabilities (refer to Note 7 for additional information). The Company adjusts these reserves in light of changing facts and circumstances; however, due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from the Company’s current estimate of the tax liabilities. If the Company’s estimate of tax liabilities proves to be less than the ultimate assessment, an additional charge to expense would result. If payment of these amounts ultimately proves to be less than the recorded amounts, the reversal of the liabilities would result in tax benefits being recognized in the period when the Company determines the liabilities are no longer necessary.

NEW ACCOUNTING PRONOUNCEMENTS

Information regarding new accounting pronouncements is included in Note 1 to the Consolidated Financial Statements.

FINANCIAL CONDITION AND LIQUIDITY

As indicated in the following table, at December 31, 2012, 3M had $5.693 billion of cash, cash equivalents, and marketable securities and $6.001 billion of debt. Debt included $4.916 billion of long-term debt, $986 million related to the current portion of long-term debt and short-term borrowings of $99 million. The current portion of long-term debt includes $850 million (principal amount) of medium-term notes due in August 2013. 3M repaid $500 million (principal amount) of medium term notes that matured in December 2012. As discussed in Note 9, in June 2012, 3M issued $650 million aggregate principal amount of five-year fixed rate notes due 2017 and $600 million aggregate principal amount of ten-year fixed rate notes due 2022. The strength of 3M’s capital structure and consistency of its cash flows provide 3M reliable access to capital markets. Additionally, the Company’s maturity profile is staggered to ensure refinancing needs in any given year are reasonable in proportion to the total portfolio. The Company has an AA- credit rating, with a stable outlook, from Standard & Poor’s and an Aa2 credit rating, with a stable outlook, from Moody’s Investors Service.

The Company generates significant ongoing operating cash flow, which has been used, in part, to pay dividends on 3M common stock, for acquisitions, and to fund share repurchase activities. As discussed in Note 2, in 2012 3M acquired Ceradyne, Inc. and other acquisitions for approximately $1 billion. In 2011, 3M acquired Winterthur Technologie AG and other acquisitions for approximately $700 million (including purchases of noncontrolling interest). 3M was able to complete these acquisitions while maintaining a strong net debt position, as shown in the table below.

At December 31
(Millions)	2012		2011
Total Debt	$	6,001	$	5,166
Less: Cash and cash equivalents and marketable securities	5,693		4,576
Net Debt	$	308	$	590

The Company defines net debt as total debt less cash, cash equivalents and current and long-term marketable securities. 3M considers net debt to be an important measure of liquidity and its ability to meet ongoing obligations. This measure is not defined under U.S. generally accepted accounting principles and may not be computed the same as similarly titled measures used by other companies.

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Cash, cash equivalents and marketable securities at December 31, 2012 totaled approximately $5.7 billion, helped by cash flows from operating activities of $5.3 billion. The Company has sufficient liquidity to meet currently anticipated growth plans, including capital expenditures, working capital investments and acquisitions. At December 31, 2012 and 2011, cash, cash equivalents and marketable securities held internationally totaled $3.7 billion and $2.7 billion, respectively, and in the United States totaled $2.0 billion and $1.9 billion, respectively. Cash available in the United States has historically been sufficient to fund dividend payments to shareholders and share repurchases, in addition to funding U.S. acquisitions, U.S. capital spending, U.S. pension/other postemployment benefit contributions, and other items as needed. For those international earnings planned to be reinvested indefinitely, the Company currently has no intention to repatriate these funds. If these international funds are needed for operations in the U.S., 3M would be required to accrue and pay U.S. taxes to repatriate these funds. However, for the international funds considered to be reinvested indefinitely, 3M’s current plans do not indicate a need to repatriate these funds for U.S. operations. Refer to Note 7 for additional information on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely.

The Company’s financial condition and liquidity are strong. Various assets and liabilities, including cash and short-term debt, can fluctuate significantly from month to month depending on short-term liquidity needs. Working capital (defined as current assets minus current liabilities) totaled $7.430 billion at December 31, 2012, compared with $6.799 billion at December 31, 2011, an increase of $631 million. Working capital increases in cash, cash equivalents, current marketable securities, inventories and accounts receivable were partially offset by increases in all major current liability accounts, especially short-term borrowings and current portion of long-term debt.

Primary short-term liquidity needs are met through cash on hand, U.S. commercial paper and euro commercial paper issuances. The Company maintains a commercial paper program that allows 3M to have a maximum of $3 billion outstanding with a maximum maturity of 397 days from date of issuance. As of December 31, 2012 and 2011, 3M had no outstanding commercial paper. The Company believes it is unlikely that its access to the commercial paper market will be restricted.

The Company has an AA- credit rating, with a stable outlook, from Standard & Poor’s and an Aa2 credit rating, with a stable outlook, from Moody’s Investors Service. In September 2012, 3M entered into a $1.5 billion, five-year multi-currency revolving credit agreement, which amended the existing agreement that was entered into in August 2011. This amended agreement extended the expiration date from August 2016 to September 2017. This credit agreement includes a provision under which 3M may request an increase of up to $500 million, bringing the total facility up to $2 billion (at the lenders’ discretion). This facility was undrawn at December 31, 2012. In August 2012, 3M entered into a $150 million, one-year committed letter of credit facility with HSBC Bank USA, which replaced the one-year $200 million committed credit facility that was entered into in August 2011. As of December 31, 2012, 3M letters of credit issued under this $150 million committed facility totaled $121 million. In December 2012, 3M entered into a three-year 66 million British Pound (approximately $106 million) committed credit agreement with JP Morgan Chase Bank, which is fully drawn as of December 31, 2012. Apart from the committed facilities, an additional $100 million in stand-alone letters of credit are also issued and outstanding at December 31, 2012. The Company also utilized $37 million in international lines of credit and $6 million in U.S. lines of credit with other banking partners as of December 31, 2012. These letters of credit are utilized in connection with normal business activities. Under both the $1.5 billion and $150 million credit agreements, the Company is required to maintain its EBITDA to Interest Ratio as of the end of each fiscal quarter at not less than 3.0 to 1. This is calculated (as defined in the agreement) as the ratio of consolidated total EBITDA for the four consecutive quarters then ended to total interest expense on all funded debt for the same period. At December 31, 2012, this ratio was approximately 45 to 1. Debt covenants do not restrict the payment of dividends.

The Company has a “well-known seasoned issuer” shelf registration statement, effective August 5, 2011, which registers an indeterminate amount of debt or equity securities for future sales. In September 2011, in connection with this August 5, 2011 shelf registration statement, 3M established a $3 billion medium-term notes program (Series F), from which 3M issued $1 billion aggregate principal amount of five-year fixed rate medium-term notes with a coupon rate of 1.375%. In June 2012, 3M issued $650 million aggregate principal amount of five-year fixed rate medium-notes due 2017 with a coupon rate of 1.000% and $600 million aggregate principal amount of ten-year fixed rate medium-term notes due 2022 with a coupon rate of 2.000%, which were both issued from this $3 billion medium-term notes program (Series F). The designated use of these proceeds is for general corporate purposes.

3M’s cash and cash equivalents balance at December 31, 2012 totaled $2.883 billion, with an additional $2.810 billion in current and long-term marketable securities. 3M’s strong balance sheet and liquidity provide the Company with significant flexibility to take advantage of numerous opportunities going forward. The Company will continue to invest in its operations to drive growth, including continual review of acquisition opportunities. 3M paid dividends of $1.635 billion in 2012, and has a long history of dividend increases. In February 2013, 3M’s Board of Directors increased the quarterly

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dividend on 3M common stock by 7.6 percent to 63.5 cents per share, equivalent to an annual dividend of $2.54 per share. In February 2013, 3M’s Board of Directors also authorized the repurchase of up to $7.5 billion of 3M’s outstanding common stock, replacing the Company’s existing repurchase program. This authorization has no pre-established end date.

In 2013, the Company plans to contribute an amount in the range of $400 million to $600 million of cash to its U.S. and international pension and postretirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2013. Therefore, the amount of the anticipated discretionary contribution could vary significantly depending on the U.S. qualified plans’ funded status as of the 2013 measurement date and the anticipated tax deductibility of the contribution. Future contributions will also depend on market conditions, interest rates and other factors. 3M believes its strong cash flow and balance sheet will allow it to fund future pension needs without compromising growth opportunities.

The Company uses various working capital measures that place emphasis and focus on certain working capital assets and liabilities. These measures are not defined under U.S. generally accepted accounting principles and may not be computed the same as similarly titled measures used by other companies. One of the primary working capital measures 3M uses is a combined index, which includes accounts receivable, inventories and accounts payable. This combined index (defined as quarterly net sales — fourth quarter at year-end — multiplied by four, divided by ending net accounts receivable plus inventories less accounts payable) was 4.8 at December 31, 2012, a decline from 5.0 at December 31, 2011. Receivables increased $194 million, or 5.0 percent, compared with December 31, 2011, driven by a year-on-year increase in fourth quarter sales. Acquisitions increased accounts receivable by $84 million and currency translation decreased accounts receivable by $23 million. Inventories increased $421 million, or 12.3 percent, compared with December 31, 2011, with the increases partially attributable to an increase in demand in the fourth-quarter of 2012 when compared to the fourth quarter of 2011. Acquisitions increased inventories by $125 million, while currency translation increased inventories by $46 million. Accounts payable increased $119 million compared with December 31, 2011. Acquisitions increased the accounts payable balance by $26 million, while currency translation increased accounts payable by $13 million.

Cash flows from operating, investing and financing activities are provided in the tables that follow. Individual amounts in the Consolidated Statement of Cash Flows exclude the effects of acquisitions, divestitures and exchange rate impacts on cash and cash equivalents, which are presented separately in the cash flows. Thus, the amounts presented in the following operating, investing and financing activities tables reflect changes in balances from period to period adjusted for these effects.

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Cash Flows from Operating Activities:

Years Ended December 31
(Millions)	2012			2011			2010
Net income including noncontrolling interest	$	4,511		$	4,357		$	4,163
Depreciation and amortization	1,288			1,236			1,120
Company pension contributions	(1,079		)	(517		)	(556		)
Company postretirement contributions	(67		)	(65		)	(62		)
Company pension expense	534			449			271
Company postretirement expense	116			106			51
Stock-based compensation expense	223			253			274
Income taxes (deferred and accrued income taxes)	123			132			85
Excess tax benefits from stock-based compensation	(62		)	(53		)	(53		)
Accounts receivable	(133		)	(205		)	(189		)
Inventories	(251		)	(196		)	(404		)
Accounts payable	72			(83		)	146
Product and other insurance receivables and claims	(32		)	9			49
Other — net	57			(139		)	279
Net cash provided by operating activities	$	5,300		$	5,284		$	5,174

Cash flows from operating activities can fluctuate significantly from period to period, as pension funding decisions, tax timing differences and other items can significantly impact cash flows.

In 2012, cash flows provided by operating activities increased $16 million compared to 2011. The main positive contribution to operating cash flows related to year-on-year increases in net income including noncontrolling interest. 3M was able to achieve this growth in operating cash flow despite contributing an additional $564 million in its pension and postretirement plans when compared to 2011. The combination of accounts receivable, inventories and accounts payable increased $312 million in 2012, compared to increases of $484 million in 2011. Additional discussion on working capital changes is provided earlier in the “Financial Condition and Liquidity” section.

In 2011, cash flows provided by operating activities increased $110 million compared to 2010. The main positive contribution to operating cash flows related to year-on-year increases in net income including noncontrolling interest. Two primary items reduced operating cash flows. First, 3M invested in working capital in support of its growth. The combination of accounts receivable, inventories and account payable increased $484 million in 2011, compared to increases of $447 million in 2010, with higher fourth-quarter 2011 sales compared to fourth-quarter 2010 sales contributing to this increase. Second, “Other-net” decreased cash flows by $139 million in 2011 compared to an increase of $279 million in 2010. The category, “Other-net,” in the preceding table reflects changes in other asset and liability accounts, such as a decrease in accrued payroll amounts in 2011 related to certain annual incentives, which reduced liabilities.

Free Cash Flow (non-GAAP measure):

In addition, to net cash provided by operating activities, 3M uses free cash flow as a useful measure of performance and as an indication of the strength of the Company and its ability to generate cash. 3M defines free cash flow as net cash provided by operating activities less purchases of property, plant and equipment (which is classified as an investing activity). Free cash flow is not defined under U.S. generally accepted accounting principles (GAAP). Therefore, it should not be considered a substitute for income or cash flow data prepared in accordance with U.S. GAAP and may not be comparable to similarly titled measures used by other companies. It should not be inferred that the entire free cash flow amount is available for discretionary expenditures. Below find a recap of free cash flow for 2012, 2011 and 2010.

Years ended December 31
(Millions)	2012			2011			2010
Net cash provided by operating activities	$	5,300		$	5,284		$	5,174
Purchases of property, plant and equipment (PP&E)	(1,484		)	(1,379		)	(1,091		)
Free Cash Flow	$	3,816		$	3,905		$	4,083

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Cash Flows from Investing Activities:

Years ended December 31
(Millions)	2012			2011			2010
Purchases of property, plant and equipment (PP&E)	$	(1,484	)	$	(1,379	)	$	(1,091	)
Proceeds from sale of PP&E and other assets	41			55			25
Acquisitions, net of cash acquired	(1,046		)	(649		)	(1,830		)
Purchases and proceeds from sale or maturities of marketable securities and investments, net	(211		)	(745		)	273
Other investing activities	14			—			(3		)
Net cash used in investing activities	$	(2,686	)	$	(2,718	)	$	(2,626	)

Investments in property, plant and equipment enable growth across many diverse markets, helping to meet product demand and increasing manufacturing efficiency. Capital spending was $1.484 billion in 2012, compared to $1.379 billion in 2011 and $1.091 billion in 2010. The Company expects 2013 capital spending to be approximately $1.6 to $1.8 billion, as 3M continues to invest in its businesses. In 2012, 3M expanded manufacturing capacity in key growth markets, particularly with respect to international and emerging market countries. This included investments in China, Turkey and Poland, in addition to investments in Singapore and the U.S. 3M also increased investments in IT systems and infrastructure and made strategic investments in research/development infrastructure and manufacturing sites to lay the foundation for future growth. In 2011, a large portion of the capital investment was used to address supply constraints in a number of businesses with significant growth potential, such as renewable energy, traffic signage in developing economies, and optically clear adhesives and glass bubbles. In addition, some of the following 2010 capital projects carried forward into 2011. In 2010, in the U.S., 3M invested in film manufacturing assets for optical systems and other non-optical businesses which use similar technology. Also, in 2010, 3M increased capacity at its multi-purpose manufacturing facility in Singapore and invested in optical film capacity in Korea. Lastly, in 2010, additional investments included solar energy in the U.S. and industrial adhesives and tapes in China.

Refer to Note 2 for information on acquisitions. The Company is actively considering additional acquisitions, investments and strategic alliances, and from time to time may also divest certain businesses.

Purchases of marketable securities and investments and proceeds from sale (or maturities) of marketable securities and investments are primarily attributable to asset-backed securities, agency securities, corporate medium-term note securities and other securities, which are classified as available-for-sale. Interest rate risk and credit risk related to the underlying collateral may impact the value of investments in asset-backed securities, while factors such as general conditions in the overall credit market and the nature of the underlying collateral may affect the liquidity of investments in asset-backed securities. The coupon interest rates for asset-backed securities are either fixed rate or floating. Floating rate coupons reset monthly or quarterly based upon the corresponding monthly or quarterly LIBOR rate. Each individual floating rate security has a coupon based upon the respective LIBOR rate +/- an amount reflective of the credit risk of the issuer and the underlying collateral on the original issue date. Terms of the reset are unique to individual securities. Fixed rate coupons are established at the time the security is issued and are based upon a spread to a related maturity treasury bond. The spread against the treasury bond is reflective of the credit risk of the issuer and the underlying collateral on the original issue date. 3M does not currently expect risk related to its holdings in asset-backed securities to materially impact its financial condition or liquidity. Refer to Note 8 for more details about 3M’s diversified marketable securities portfolio, which totaled $2.810 billion as of December 31, 2012. Additional purchases of investments include additional survivor benefit insurance and equity investments.

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Cash Flows from Financing Activities:

Years Ended December 31
(Millions)	2012			2011			2010
Change in short-term debt — net	$	(36	)	$	11		$	(24	)
Repayment of debt (maturities greater than 90 days)	(612		)	(1,429		)	(556		)
Proceeds from debt (maturities greater than 90 days)	1,370			1,111			108
Total cash change in debt	$	722		$	(307	)	$	(472	)
Purchases of treasury stock	(2,204		)	(2,701		)	(854		)
Proceeds from issuances of treasury stock pursuant to stock option and benefit plans	1,012			902			666
Dividends paid to stockholders	(1,635		)	(1,555		)	(1,500		)
Excess tax benefits from stock-based compensation	62			53			53
Other — net	(15		)	(67		)	(77		)
Net cash used in financing activities	$	(2,058	)	$	(3,675	)	$	(2,184	)

Total debt at December 31, 2012 was $6.0 billion, compared to $5.2 billion at year-end 2011 and $5.5 billion at year-end 2010. Total debt was 25 percent of total capital (total capital is defined as debt plus equity) at year-end 2012, 2011 and 2010. In 2012, repayment of debt included $500 million (principal amount) of medium-term notes and repayment of debt acquired, primarily Ceradyne, Inc. Proceeds from debt in 2012 related to the June 2012 issuance of $650 million aggregate principal amount of five-year fixed rate medium-term notes due 2017 and $600 million aggregate principal amount of ten-year fixed rate medium-term notes due 2022, in addition to 66 million GBP (approximately $106 million) in UK borrowings (refer to Note 9 for further detail on these items). In 2011, major items in repayment of debt (maturities greater than 90 days) included redemption of $800 million (principal amount) of medium-term notes in November 2011, redemption of Convertible Notes, repayment of debt related to the 11.6 billion Japanese Yen note (installments paid in March and September 2011), repayment of the remainder of the Canadian Dollar loan, and repayment of a portion of debt that was acquired, primarily related to the Winterthur acquisition. In 2011, proceeds from debt (maturities greater than 90 days) primarily related to the issuance of a $1 billion medium term note and an amendment to a Canada loan agreement which increased the principal amount of the loan by 100.5 million Canadian Dollars. In 2010, major items in repayment of debt (maturities greater than 90 days) included repayment of $350 million in Dealer Remarketable Securities, which matured in December 2010, and repayment of a portion of debt related to the 5.8 billion Japanese Yen installment paid on September 30, 2010. In addition, approximately $105 million in acquired debt related to 2010 acquisitions was subsequently repaid. In 2010, proceeds from debt primarily include a 100.5 million Canadian Dollar loan.

Repurchases of common stock are made to support the Company’s stock-based employee compensation plans and for other corporate purposes. In February 2013, 3M’s Board of Directors authorized the repurchase of up to $7.5 billion of 3M’s outstanding common stock, replacing the Company’s existing repurchase program. This authorization has no pre-established end date. The Company purchased $2.204 billion in shares in 2012, $2.701 billion in shares in 2011, and $854 million in shares in 2010. For more information, refer to the table titled “Issuer Purchases of Equity Securities” in Part II, Item 5. The Company does not utilize derivative instruments linked to the Company’s stock.

Cash dividends paid to shareholders totaled $1.635 billion ($2.36 per share) in 2012, $1.555 billion ($2.20 per share) in 2011 and $1.500 billion ($2.10 per share) in 2010. 3M has paid dividends since 1916. In February 2013, the Board of Directors increased the quarterly dividend on 3M common stock by 7.6 percent to 63.5 cents per share, equivalent to an annual dividend of $2.54 per share. This marked the 55th consecutive year of dividend increases.

In addition to the items described below, other cash flows from financing activities may include various other items, such as distributions to or sales of noncontrolling interests, changes in cash overdraft balances, and principal payments for capital leases.

In 2011, as discussed in Note 5, subsequent to acquiring a controlling interest in Winterthur, 3M purchased additional outstanding shares of its Winterthur subsidiary for $57 million, increasing 3M’s ownership interest from approximately 86 percent to 100 percent as of December 31, 2011. These additional purchases are reflected as other financing activities in the statement of cash flows. In addition, during 2011, 3M sold a noncontrolling interest in a newly formed subsidiary for an immaterial amount, which was also classified as other financing activity in the consolidated statement of cash flows.

During the quarter ended March 31, 2010, as discussed in Note 5, the Company’s majority owned Sumitomo 3M Limited entity (Sumitomo 3M) purchased a portion of its shares held by its noncontrolling interest, Sumitomo Electric Industries, Ltd. (SEI), by paying cash of 5.8 billion Japanese Yen and entering into a note payable to SEI of 17.4 billion

33

Japanese Yen (approximately $63 million and $188 million, respectively, based on applicable exchange rates at that time). The cash paid of approximately $63 million during the quarter ended March 31, 2010 as a result of the purchase of Sumitomo 3M shares from SEI is classified as “Other financing activities” in the consolidated statement of cash flows. The remainder of the purchase financed by the note payable to SEI is considered non-cash financing activity in the first quarter of 2010. As discussed in Note 2, during the second quarter of 2010, 3M recorded a financed liability of 1.7 billion Japanese yen (approximately $18 million based on applicable exchange rates at that time) related to the A-One acquisition, which is also considered a non-cash financing activity.

Off-Balance Sheet Arrangements and Contractual Obligations:

As of December 31, 2012, the Company has not utilized special purpose entities to facilitate off-balance sheet financing arrangements. Refer to the section entitled “Warranties/Guarantees” in Note 13 for discussion of accrued product warranty liabilities and guarantees.

In addition to guarantees, 3M, in the normal course of business, periodically enters into agreements that require the Company to indemnify either major customers or suppliers for specific risks, such as claims for injury or property damage arising out of the use of 3M products or the negligence of 3M personnel, or claims alleging that 3M products infringe third-party patents or other intellectual property. While 3M’s maximum exposure under these indemnification provisions cannot be estimated, these indemnifications are not expected to have a material impact on the Company’s consolidated results of operations or financial condition.

A summary of the Company’s significant contractual obligations as of December 31, 2012, follows:

Contractual Obligations

			Payments due by year
													After
(Millions)	Total		2013		2014		2015		2016		2017		2017
Long-term debt, including current portion (Note 9)	$	5,902	$	986	$	1,481	$	107	$	994	$	648	$	1,686
Interest on long-term debt	1,721		189		152		97		96		79		1,108
Operating leases (Note 13)	735		194		158		119		77		68		119
Capital leases (Note 13)	96		22		21		8		7		4		34
Unconditional purchase obligations and other	1,489		1,060		209		111		48		33		28
Total contractual cash obligations	$	9,943	$	2,451	$	2,021	$	442	$	1,222	$	832	$	2,975

Long-term debt payments due in 2013 and 2014 include floating rate notes totaling $132 million (classified as current portion of long-term debt) and $97 million, respectively, as a result of put provisions associated with these debt instruments.

Unconditional purchase obligations are defined as an agreement to purchase goods or services that is enforceable and legally binding on the Company. Included in the unconditional purchase obligations category above are certain obligations related to take or pay contracts, capital commitments, service agreements and utilities. These estimates include both unconditional purchase obligations with terms in excess of one year and normal ongoing purchase obligations with terms of less than one year. Many of these commitments relate to take or pay contracts, in which 3M guarantees payment to ensure availability of products or services that are sold to customers. The Company expects to receive consideration (products or services) for these unconditional purchase obligations. Contractual capital commitments are included in the preceding table, but these commitments represent a small part of the Company’s expected capital spending in 2013 and beyond. The purchase obligation amounts do not represent the entire anticipated purchases in the future, but represent only those items for which the Company is contractually obligated. The majority of 3M’s products and services are purchased as needed, with no unconditional commitment. For this reason, these amounts will not provide a reliable indicator of the Company’s expected future cash outflows on a stand-alone basis.

Other obligations, included in the preceding table within the caption entitled “Unconditional purchase obligations and other,” include the current portion of the liability for uncertain tax positions under ASC 740, which is expected to be paid out in cash in the next 12 months. The Company is not able to reasonably estimate the timing of the long-term payments or the amount by which the liability will increase or decrease over time; therefore, the long-term portion of the net tax liability of $170 million is excluded from the preceding table. Refer to Note 7 for further details.

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As discussed in Note 10, the Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2013 and Company contributions to its U.S. and international pension plans are expected to be largely discretionary in future years; therefore, amounts related to these plans are not included in the preceding table.

FINANCIAL INSTRUMENTS

The Company enters into foreign exchange forward contracts, options and swaps to hedge against the effect of exchange rate fluctuations on cash flows denominated in foreign currencies and certain intercompany financing transactions. The Company manages interest rate risks using a mix of fixed and floating rate debt. To help manage borrowing costs, the Company may enter into interest rate swaps. Under these arrangements, the Company agrees to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The Company manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts.

Refer to Item 7A, “Quantitative and Qualitative Disclosures About Market Risk”, for further discussion of foreign exchange rates risk, interest rates risk, commodity prices risk and value at risk analysis.

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

In the context of Item 7A, 3M is exposed to market risk due to the risk of loss arising from adverse changes in foreign currency exchange rates, interest rates and commodity prices. Changes in those factors could cause fluctuations in earnings and cash flows. Senior management provides oversight for risk management and derivative activities, determines certain of the Company’s financial risk policies and objectives, and provides guidelines for derivative instrument utilization. Senior management also establishes certain associated procedures relative to control and valuation, risk analysis, counterparty credit approval, and ongoing monitoring and reporting.

The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company’s risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. The Company does not anticipate nonperformance by any of these counterparties.

Foreign Exchange Rates Risk:

Foreign currency exchange rates and fluctuations in those rates may affect the Company’s net investment in foreign subsidiaries and may cause fluctuations in cash flows related to foreign denominated transactions. 3M is also exposed to the translation of foreign currency earnings to the U.S. dollar. The Company enters into foreign exchange forward and option contracts to hedge against the effect of exchange rate fluctuations on cash flows denominated in foreign currencies and certain intercompany financing transactions. These transactions are designated as cash flow hedges. Generally, 3M dedesignates these cash flow hedge relationships in advance of the occurrence of the forecasted transaction. The maximum length of time over which 3M hedges its exposure to the variability in future cash flows for a majority of the forecasted transactions is 12 months and, accordingly, at December 31, 2012, the majority of the Company’s open foreign exchange forward and option contracts had maturities of one year or less. In addition, 3M enters into foreign currency forward contracts that are not designated in hedging relationships to offset, in part, the impacts of certain intercompany activities (primarily associated with intercompany licensing arrangements). As circumstances warrant, the Company also uses cross currency swaps, forwards and foreign currency denominated debt as hedging instruments to hedge portions of the Company’s net investments in foreign operations. The dollar equivalent gross notional amount of the Company’s foreign exchange forward and option contracts designated as cash flow hedges and those not designated as hedging instruments were $5.8 billion and $1.0 billion, respectively, at December 31, 2012. As of December 31, 2012, the Company had no cross currency swap and foreign currency forward contracts designated as net investment hedges, but had designated certain of 3M’s foreign currency denominated debt as nonderivative hedging instruments in certain net investment hedges as discussed in Note 11 in the “Net Investment Hedges” section.

Interest Rates Risk:

The Company may be impacted by interest rate volatility with respect to existing debt and future debt issuances. 3M manages interest expense using a mix of fixed and floating rate debt. To help manage borrowing costs, the Company may enter into interest rate swaps that are designated and qualify as fair value hedges. Under these arrangements, the Company agrees to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated

35

by reference to an agreed-upon notional principal amount. The dollar equivalent (based on inception date foreign currency exchange rates) gross notional amount of the Company’s interest rate swaps at December 31, 2012 was $342 million. Additional details about 3M’s long-term debt can be found in Note 9, including references to information regarding derivatives and/or hedging instruments associated with the Company’s long-term debt.

Commodity Prices Risk:

Certain commodities the Company uses in the production of its products are exposed to market price risks. 3M manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts. The Company uses commodity price swaps relative to natural gas as cash flow hedges of forecasted transactions to manage price volatility. Generally, the length of time over which 3M hedges its exposure to the variability in future cash flows for its forecasted natural gas transactions is 12 months. 3M also enters into commodity price swaps that are not designated in hedge relationships to offset, in part, the impacts of fluctuations in costs associated with the use of certain precious metals.

The dollar equivalent gross notional amount of the Company’s natural gas commodity price swaps designated as cash flow hedges and precious metal commodity price swaps not designated in hedge relationships were $18 million and $1 million, respectively, at December 31, 2012.

Value At Risk:

The value at risk analysis is performed annually. A Monte Carlo simulation technique was used to test the Company’s exposure to changes in currency rates, interest rates, and commodity prices and assess the risk of loss or benefit in after-tax earnings of financial instruments (primarily debt), derivatives and underlying exposures outstanding at December 31, 2012. The model (third-party bank dataset) used a 95 percent confidence level over a 12-month time horizon. The exposure to changes in currency rates model used 18 currencies, interest rates related to four currencies, and commodity prices related to five commodities. This model does not purport to represent what actually will be experienced by the Company. This model does not include certain hedge transactions, because the Company believes their inclusion would not materially impact the results. Foreign exchange rate risk of loss or benefit decreased in 2012, primarily due to decreases in exposures, which is one of the key drivers in the valuation model. Interest rate volatility remained stable in 2012 because interest rates are currently very low and are projected to remain low, based on forward rates. The following table summarizes the possible adverse and positive impacts to after-tax earnings related to these exposures.

	Adverse impact on after-tax earnings						Positive impact on after-tax earnings
(Millions)	2012			2011			2012		2011
Foreign exchange rates	$	(97	)	$	(131	)	$	105	$	146
Interest rates	(2		)	(2		)	1		2
Commodity prices	(9		)	(10		)	7		7

In addition to the possible adverse and positive impacts discussed in the preceding table related to foreign exchange rates, recent historical information is as follows. 3M estimates that year-on-year currency effects, including hedging impacts, had the following effects on net income attributable to 3M: full-year 2012 ($103 million decrease) and full-year 2011 ($154 million increase). This estimate includes the effect of translating profits from local currencies into U.S. dollars; the impact of currency fluctuations on the transfer of goods between 3M operations in the United States and abroad; and transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of swapping Venezuelan bolivars into U.S. dollars. 3M estimates that year-on-year derivative and other transaction gains and losses had the following effects on net income attributable to 3M: full-year 2012 ($49 million increase) and full-year 2011 (immaterial impact).

An analysis of the global exposures related to purchased components and materials is performed at each year-end. A one percent price change would result in a pre-tax cost or savings of approximately $71 million per year. The global energy exposure is such that a 10 percent price change would result in a pre-tax cost or savings of approximately $42 million per year.

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Item 8. Financial Statements and Supplementary Data.

Note: The information contained in this Item has been updated for the business segment and geographic area realignments effective in the first quarter of 2013 (Note 15 and 16), in addition to the retrospective application of certain accounting standards that were effective January 1, 2013. Related to these changes, updates have been made to the following Notes to Consolidated Financial Statements:

·Notes 1 and 11, Significant Accounting Policies / Derivatives: The required retrospective adoption of ASU No. 2011-11, Disclosures About Offsetting Assets and Liabilities and ASU No. 2013-01, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities, effective January 1, 2013. The disclosure requirements (provided in Note 11) have been applied retrospectively to all periods presented.

·Notes 1 and 5, Significant Accounting Policies / Supplemental Equity and Comprehensive Income: The adoption of ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, effective January 1, 2013. The presentation and disclosure requirements (provided in Note 5) have been applied retrospectively to all periods presented.

·Note 3, Goodwill and Intangible Assets: Reclassifications were made to goodwill balances by business segment to reflect the segment realignments for all periods presented. No goodwill impairments resulted from this new business segment structure.

·Note 15, Business Segments: Net sales, operating income, assets, depreciation and amortization, and capital expenditures amounts have been revised to reflect the segment realignments for all periods presented.

·Note 16, Geographic Areas: Net sales, operating income, and property, plant and equipment-net amounts have been revised to reflect the geographic area realignments for all periods presented.

For significant developments since the filing of the 2012 Annual Report (e.g. new developments in “Commitments and Contingencies”), refer to subsequent 2013 Quarterly Reports on Form 10-Q.

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Item 8. Financial Statements and Supplementary Data.

Index to Financial Statements

	Beginning page
Management’s Responsibility for Financial Reporting	39
Management’s Report on Internal Control Over Financial Reporting	39
Report of Independent Registered Public Accounting Firm	40
Consolidated Statement of Income for the years ended December 31, 2012, 2011 and 2010	41
Consolidated Statement of Comprehensive Income for the years ended December 31, 2012, 2011 and 2010	42
Consolidated Balance Sheet at December 31, 2012 and 2011	43
Consolidated Statement of Changes in Equity for the years ended December 31, 2012, 2011 and 2010	44
Consolidated Statement of Cash Flows for the years ended December 31, 2012, 2011 and 2010	46
Notes to Consolidated Financial Statements	47
Note 1. Significant Accounting Policies	47
Note 2. Acquisitions	55
Note 3. Goodwill and Intangible Assets	59
Note 4. Supplemental Balance Sheet Information	61
Note 5. Supplemental Equity and Comprehensive Income Information	62
Note 6. Supplemental Cash Flow Information	65
Note 7. Income Taxes	66
Note 8. Marketable Securities	70
Note 9. Long-Term Debt and Short-Term Borrowings	72
Note 10. Pension and Postretirement Benefit Plans	74
Note 11. Derivatives	87
Note 12. Fair Value Measurements	95
Note 13. Commitments and Contingencies	99
Note 14. Stock-Based Compensation	110
Note 15. Business Segments	114
Note 16. Geographic Areas	116
Note 17. Quarterly Data (Unaudited)	116

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Management’s Responsibility for Financial Reporting

Management is responsible for the integrity and objectivity of the financial information included in this report. The financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. Where necessary, the financial statements reflect estimates based on management’s judgment.

Management has established and maintains a system of internal accounting and other controls for the Company and its subsidiaries. This system and its established accounting procedures and related controls are designed to provide reasonable assurance that assets are safeguarded, that the books and records properly reflect all transactions, that policies and procedures are implemented by qualified personnel, and that published financial statements are properly prepared and fairly presented. The Company’s system of internal control is supported by widely communicated written policies, including business conduct policies, which are designed to require all employees to maintain high ethical standards in the conduct of Company affairs. Internal auditors continually review the accounting and control system.

3M Company

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining an adequate system of internal control over financial reporting. Management conducted an assessment of the Company’s internal control over financial reporting based on the framework established by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control — Integrated Framework. Based on the assessment, management concluded that, as of December 31, 2012, the Company’s internal control over financial reporting is effective.

Management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2012 excluded Ceradyne, Inc., which was acquired by the Company in November 2012 in a purchase business combination. Ceradyne, Inc. is a wholly-owned subsidiary of the Company whose total assets and total net sales represented less than 5% of consolidated total assets and less than 1% of consolidated net sales, respectively, of the Company as of and for the year ended December 31, 2012. As permitted by guidelines established by the Securities and Exchange Commission, companies are allowed to exclude certain acquisitions from their assessment of internal control over financial reporting during the first year of an acquisition while integrating the acquired company.

The Company’s internal control over financial reporting as of December 31, 2012 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which is included herein, which expresses an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2012.

3M Company

39

Report of Independent Registered Public Accounting Firm

To the Stockholders and Board of Directors of 3M Company

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of 3M Company and its subsidiaries (the “Company”) at December 31, 2012 and 2011, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012 in 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, 2012, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).  The Company’s management is responsible for these 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 accompanying Management’s Report on Internal Control over Financial Reporting.  Our responsibility is to express opinions on these financial statements and on the Company’s internal control over financial reporting based on our integrated audits.  We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).  Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects.  Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation.  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.

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.

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.

As described in Management’s Report on Internal Control Over Financial Reporting, management has excluded Ceradyne, Inc. from its assessment of internal control over financial reporting as of December 31, 2012, because it was acquired by the Company in a purchase business combination during 2012.  We have also excluded Ceradyne, Inc. from our audit of internal control over financial reporting.  Ceradyne, Inc. is a wholly-owned subsidiary of the Company whose total assets and total net sales represent less than 5% and 1%, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2012.

/s/ PricewaterhouseCoopers LLP

Minneapolis, Minnesota

February 14, 2013, except with respect to our opinion on the consolidated financial statements insofar as it relates to the segment and geographic area reporting realignments discussed in Notes 3, 15, and 16 and adoption of accounting standards regarding disclosures about offsetting assets and liabilities and amounts reclassified out of accumulated other comprehensive income discussed in Notes 1, 5, and 11 as to which the date is May 16, 2013

40

Consolidated Statement of Income

3M Company and Subsidiaries

Years ended December 31

(Millions, except per share amounts)	2012			2011			2010
Net sales	$	29,904		$	29,611		$	26,662
Operating expenses
Cost of sales	15,685			15,693			13,831
Selling, general and administrative expenses	6,102			6,170			5,479
Research, development and related expenses	1,634			1,570			1,434
Total operating expenses	23,421			23,433			20,744
Operating income	6,483			6,178			5,918
Interest expense and income
Interest expense	171			186			201
Interest income	(39		)	(39		)	(38		)
Total interest expense — net	132			147			163
Income before income taxes	6,351			6,031			5,755
Provision for income taxes	1,840			1,674			1,592
Net income including noncontrolling interest	$	4,511		$	4,357		$	4,163
Less: Net income attributable to noncontrolling interest	67			74			78
Net income attributable to 3M	$	4,444		$	4,283		$	4,085
Weighted average 3M common shares outstanding — basic	693.9			708.5			713.7
Earnings per share attributable to 3M common shareholders — basic	$	6.40		$	6.05		$	5.72
Weighted average 3M common shares outstanding — diluted	703.3			719.0			725.5
Earnings per share attributable to 3M common shareholders — diluted	$	6.32		$	5.96		$	5.63
Cash dividends paid per 3M common share	$	2.36		$	2.20		$	2.10

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.

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Consolidated Statement of Comprehensive Income

3M Company and Subsidiaries

Years ended December 31

(Millions)	2012			2011			2010
Net income including noncontrolling interest	$	4,511		$	4,357		$	4,163
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	71			(250		)	244
Defined benefit pension and postretirement plans adjustment	201			(1,280		)	(42		)
Debt and equity securities, unrealized gain (loss)	4			—			3
Cash flow hedging instruments, unrealized gain (loss)	(45		)	54			4
Total other comprehensive income (loss), net of tax	231			(1,476		)	209
Comprehensive income (loss) including noncontrolling interest	4,742			2,881			4,372
Comprehensive (income) loss attributable to noncontrolling interest	(23		)	(80		)	(115		)
Comprehensive income (loss) attributable to 3M	$	4,719		$	2,801		$	4,257

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.

42

Consolidated Balance Sheet

3M Company and Subsidiaries

At December 31

(Dollars in millions, except per share amount)	2012			2011
Assets
Current assets
Cash and cash equivalents	$	2,883		$	2,219
Marketable securities — current	1,648			1,461
Accounts receivable — net of allowances of $105 and $108	4,061			3,867
Inventories
Finished goods	1,754			1,536
Work in process	1,186			1,061
Raw materials and supplies	897			819
Total inventories	3,837			3,416
Other current assets	1,201			1,277
Total current assets	13,630			12,240
Marketable securities — non-current	1,162			896
Investments	163			155
Property, plant and equipment	22,525			21,166
Less: Accumulated depreciation	(14,147		)	(13,500		)
Property, plant and equipment — net	8,378			7,666
Goodwill	7,385			7,047
Intangible assets — net	1,925			1,916
Prepaid pension benefits	16			40
Other assets	1,217			1,656
Total assets	$	33,876		$	31,616
Liabilities
Current liabilities
Short-term borrowings and current portion of long-term debt	$	1,085		$	682
Accounts payable	1,762			1,643
Accrued payroll	701			676
Accrued income taxes	371			355
Other current liabilities	2,281			2,085
Total current liabilities	6,200			5,441
Long-term debt	4,916			4,484
Pension and postretirement benefits	3,086			3,972
Other liabilities	1,634			1,857
Total liabilities	$	15,836		$	15,754
Commitments and contingencies (Note 13)
Equity
3M Company shareholders’ equity:
Common stock, par value $.01 per share Shares outstanding - 2012: 687,091,650 Shares outstanding - 2011: 694,970,041	$	9		$	9
Additional paid-in capital	4,044			3,767
Retained earnings	30,679			28,348
Treasury stock	(12,407		)	(11,679		)
Accumulated other comprehensive income (loss)	(4,750		)	(5,025		)
Total 3M Company shareholders’ equity	17,575			15,420
Noncontrolling interest	465			442
Total equity	$	18,040		$	15,862
Total liabilities and equity	$	33,876		$	31,616

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.

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Consolidated Statement of Changes in Equity

3M Company and Subsidiaries

Years Ended December 31

				3M Company Shareholders
(Dollars in millions, except per share amounts)	Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Non-controlling Interest
Balance at December 31, 2009	$	13,302		$	3,162		$	23,753		$	(10,397	)	$	(3,754	)	$	538
Net income	4,163						4,085									78
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	244												205			39
Defined benefit pension and post-retirement plans adjustment	(42		)										(40		)	(2		)
Debt and equity securities - unrealized gain (loss)	3												3			—
Cash flow hedging instruments - unrealized gain (loss)	4												4			—
Total other comprehensive income (loss), net of tax	209
Dividends paid ($2.10 per share)	(1,500		)				(1,500		)
Purchase of subsidiary shares and transfers from noncontrolling interest	(256		)	4									39			(299		)
Stock-based compensation, net of tax impacts	311			311
Reacquired stock	(880		)							(880		)
Issuances pursuant to stock option and benefit plans	668						(343		)	1,011
Balance at December 31, 2010	$	16,017		$	3,477		$	25,995		$	(10,266	)	$	(3,543	)	$	354
Net income	4,357						4,283									74
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(250		)										(260		)	10
Defined benefit pension and post-retirement plans adjustment	(1,280		)										(1,276		)	(4		)
Debt and equity securities - unrealized gain (loss)	—												—			—
Cash flow hedging instruments - unrealized gain (loss)	54												54			—
Total other comprehensive income (loss), net of tax	(1,476		)
Dividends paid ($2.20 per share)	(1,555		)				(1,555		)
Business combination allocation to noncontrolling interest	56															56
Purchase and sale of subsidiary shares - Net	(49		)	(1		)										(48		)
Stock-based compensation, net of tax impacts	300			300
Reacquired stock	(2,694		)							(2,694		)
Issuances pursuant to stock option and benefit plans	906						(375		)	1,281
Balance at December 31, 2011	$	15,862		$	3,776		$	28,348		$	(11,679	)	$	(5,025	)	$	442

44

Consolidated Statement of Changes in Equity (continued)

				3M Company Shareholders
(Dollars in millions, except per share amounts)	Total			Common Stock and Additional Paid-in Capital		Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Non- controlling Interest
Balance at December 31, 2011	$	15,862		$	3,776	$	28,348		$	(11,679	)	$	(5,025	)	$	442
Net income	4,511					4,444									67
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	71											116			(45		)
Defined benefit pension and post-retirement plans adjustment	201											200			1
Debt and equity securities - unrealized gain (loss)	4											4			—
Cash flow hedging instruments - unrealized gain/(loss)	(45		)									(45		)	—
Total other comprehensive income (loss), net of tax	231
Dividends paid ($2.36 per share)	(1,635		)			(1,635		)
Stock-based compensation, net of tax impacts	277			277
Reacquired stock	(2,220		)						(2,220		)
Issuances pursuant to stock option and benefit plans	1,014					(478		)	1,492
Balance at December 31, 2012	$	18,040		$	4,053	$	30,679		$	(12,407	)	$	(4,750	)	$	465

Supplemental share information	2012		2011		2010
Treasury stock
Beginning balance	249,063,015		232,055,448		233,433,937
Reacquired stock	25,054,207		31,331,469		10,572,666
Issuances pursuant to stock options and benefit plans	(17,175,816	)	(14,323,902	)	(11,951,155	)
Ending balance	256,941,406		249,063,015		232,055,448

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.

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Consolidated Statement of Cash Flows

3M Company and Subsidiaries

Years ended December 31

(Millions)	2012			2011			2010
Cash Flows from Operating Activities
Net income including noncontrolling interest	$	4,511		$	4,357		$	4,163
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	1,288			1,236			1,120
Company pension and postretirement contributions	(1,146		)	(582		)	(618		)
Company pension and postretirement expense	650			555			322
Stock-based compensation expense	223			253			274
Deferred income taxes	33			177			(170		)
Excess tax benefits from stock-based compensation	(62		)	(53		)	(53		)
Changes in assets and liabilities
Accounts receivable	(133		)	(205		)	(189		)
Inventories	(251		)	(196		)	(404		)
Accounts payable	72			(83		)	146
Accrued income taxes (current and long-term)	90			(45		)	255
Product and other insurance receivables and claims	(32		)	9			49
Other — net	57			(139		)	279
Net cash provided by operating activities	5,300			5,284			5,174
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(1,484		)	(1,379		)	(1,091		)
Proceeds from sale of PP&E and other assets	41			55			25
Acquisitions, net of cash acquired	(1,046		)	(649		)	(1,830		)
Purchases of marketable securities and investments	(5,492		)	(4,162		)	(3,287		)
Proceeds from sale of marketable securities and investments	3,151			1,679			1,995
Proceeds from maturities of marketable securities	2,130			1,738			1,565
Other investing	14			—			(3		)
Net cash used in investing activities	(2,686		)	(2,718		)	(2,626		)
Cash Flows from Financing Activities
Change in short-term debt — net	(36		)	11			(24		)
Repayment of debt (maturities greater than 90 days)	(612		)	(1,429		)	(556		)
Proceeds from debt (maturities greater than 90 days)	1,370			1,111			108
Purchases of treasury stock	(2,204		)	(2,701		)	(854		)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	1,012			902			666
Dividends paid to shareholders	(1,635		)	(1,555		)	(1,500		)
Excess tax benefits from stock-based compensation	62			53			53
Other — net	(15		)	(67		)	(77		)
Net cash used in financing activities	(2,058		)	(3,675		)	(2,184		)
Effect of exchange rate changes on cash and cash equivalents	108			(49		)	(27		)
Net increase (decrease) in cash and cash equivalents	664			(1,158		)	337
Cash and cash equivalents at beginning of year	2,219			3,377			3,040
Cash and cash equivalents at end of year	$	2,883		$	2,219		$	3,377

The accompanying Notes to Consolidated Financial Statements are an integral part of this statement.

46

Notes to Consolidated Financial Statements

NOTE 1.  Significant Accounting Policies

Consolidation: 3M is a diversified global manufacturer, technology innovator and marketer of a wide variety of products. All subsidiaries are consolidated. All significant intercompany transactions are eliminated. As used herein, the term “3M” or “Company” refers to 3M Company and subsidiaries unless the context indicates otherwise.

Foreign currency translation: Local currencies generally are considered the functional currencies outside the United States. Assets and liabilities for operations in local-currency environments are translated at year-end exchange rates. Income and expense items are translated at average rates of exchange prevailing during the year. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders’ equity.

Although local currencies are typically considered as the functional currencies outside the United States, under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, the reporting currency of a foreign entity’s parent is assumed to be that entity’s functional currency when the economic environment of a foreign entity is highly inflationary—generally when its cumulative inflation is approximately 100 percent or more for the three years that precede the beginning of a reporting period. 3M has a subsidiary in Venezuela with operating income representing less than 1.0 percent of 3M’s consolidated operating income for 2012. 3M determined that the cumulative inflation rate of Venezuela in November 2009 and since has exceeded 100 percent. Accordingly, the financial statements of the Venezuelan subsidiary were remeasured as if its functional currency were that of its parent beginning January 1, 2010.

Regulations in Venezuela require the purchase and sale of foreign currency to be made at official rates of exchange that are fixed from time to time by the Venezuelan government. Certain laws in the country, however, provided an exemption for the purchase and sale of certain securities and resulted in an indirect “parallel” market through which companies obtained foreign currency without having to purchase it from Venezuela’s Commission for the Administration of Foreign Exchange (CADIVI). In May 2010, the Venezuelan government took control of the previously freely-traded parallel market. The government-controlled rate that emerged under the new Transaction System for Foreign Currency Denominated Securities (SITME) is not as unfavorable as the previous parallel rate in comparison to the official rates. As previously disclosed, as of December 31, 2009 (prior to the change in functional currency of 3M’s Venezuelan subsidiary in January 2010), 3M changed to use of the parallel exchange rate for translation of the financial statements of its Venezuelan subsidiary. Beginning January 1, 2010, as discussed above, the financial statements of the Venezuelan subsidiary are remeasured as if its functional currency were that of its parent. This remeasurement utilized the parallel rate through May 2010 and the SITME rate thereafter.

The Company continues to monitor circumstances relative to its Venezuelan subsidiary. Other factors notwithstanding, the change in functional currency of this subsidiary and associated remeasurement beginning January 1, 2010 as a result of Venezuela’s economic environment decreased net sales of the Venezuelan subsidiary by approximately two-thirds in 2010 in comparison to 2009 (based on exchange rates at 2009 year-end), but did not otherwise have a material impact on operating income and 3M’s consolidated results of operations.

Reclassifications: Certain amounts in the prior years’ consolidated financial statements have been reclassified to conform to the current year presentation.

Use of estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

Cash and cash equivalents: Cash and cash equivalents consist of cash and temporary investments with maturities of three months or less when acquired.

Marketable securities: The classification of marketable securities as current or non-current is dependent upon management’s intended holding period, the security’s maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. 3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders’ equity. Such an

47

unrealized loss does not reduce net income for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.

Investments: Investments primarily include equity method, cost method, and available-for-sale equity investments. Available-for-sale investments are recorded at fair value. Unrealized gains and losses relating to investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss) in shareholders’ equity.

Other assets: Other assets include deferred income taxes, product and other insurance receivables, the cash surrender value of life insurance policies, and other long-term assets. Investments in life insurance are reported at the amount that could be realized under contract at the balance sheet date, with any changes in cash surrender value or contract value during the period accounted for as an adjustment of premiums paid. Cash outflows and inflows associated with life insurance activity are included in “Purchases of marketable securities and investments” and “Proceeds from sale of marketable securities and investments,” respectively.

Inventories: Inventories are stated at the lower of cost or market, with cost generally determined on a first-in, first-out basis.

Property, plant and equipment: Property, plant and equipment, including capitalized interest and internal engineering costs, are recorded at cost. Depreciation of property, plant and equipment generally is computed using the straight-line method based on the estimated useful lives of the assets. The estimated useful lives of buildings and improvements primarily range from 10 to 40 years, with the majority in the range of 20 to 40 years. The estimated useful lives of machinery and equipment primarily range from three to 15 years, with the majority in the range of five to 10 years. Fully depreciated assets are retained in property and accumulated depreciation accounts until disposal. Upon disposal, assets and related accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposal, is charged or credited to operations. Property, plant and equipment amounts are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss would be recognized when the carrying amount of an asset exceeds the estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. The amount of the impairment loss recorded is calculated by the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis.

Conditional asset retirement obligations: A liability is initially recorded at fair value for an asset retirement obligation associated with the retirement of tangible long-lived assets in the period in which it is incurred if a reasonable estimate of fair value can be made. Conditional asset retirement obligations exist for certain long-term assets of the Company. The obligation is initially measured at fair value using expected present value techniques. Over time the liabilities are accreted for the change in their present value and the initial capitalized costs are depreciated over the remaining useful lives of the related assets. The asset retirement obligation liability was $86 million and $79 million at December 31, 2012 and 2011, respectively.

Goodwill: Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination. Goodwill is not amortized. Goodwill is tested for impairment annually in the fourth quarter of each year, and is tested for impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amount may be impaired. Impairment testing for goodwill is done at a reporting unit level, with all goodwill assigned to a reporting unit. Reporting units are one level below the business segment level, but can be combined when reporting units within the same segment have similar economic characteristics. 3M did not combine any of its reporting units for impairment testing. An impairment loss generally would be recognized when the carrying amount of the reporting unit’s net assets exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using earnings for the reporting unit multiplied by a price/earnings ratio for comparable industry groups, or by using a discounted cash flow analysis.

Intangible assets: Intangible assets include patents, tradenames and other intangible assets acquired from an independent party. Intangible assets with an indefinite life, namely certain tradenames, are not amortized. Intangible assets with a definite life are amortized over a period ranging from one to 20 years generally on a straight line basis, unless another systematic and rational basis is more representative of the asset’s use. Indefinite-lived intangible assets are tested for impairment annually, and are tested for impairment between annual tests if an event occurs or circumstances change that would indicate that the carrying amount may be impaired. Intangible assets with a definite life are tested for impairment whenever events or circumstances indicate that the carrying amount of an asset (asset group)

48

may not be recoverable. An impairment loss is recognized when the carrying amount of an asset exceeds the estimated undiscounted cash flows used in determining the fair value of the asset. The amount of the impairment loss recorded is calculated by the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis. Costs related to internally developed intangible assets, such as patents, are expensed as incurred, primarily in “Research, development and related expenses.”

Restructuring actions: Restructuring actions generally include significant actions involving employee-related severance charges, contract termination costs, and impairment of assets associated with such actions. Employee-related severance charges are largely based upon distributed employment policies and substantive severance plans. These charges are reflected in the quarter when the actions are probable and the amounts are estimable, which typically is when management approves the associated actions. Severance amounts for which affected employees were required to render service in order to receive benefits at their termination dates were measured at the date such benefits were communicated to the applicable employees and recognized as expense over the employees’ remaining service periods. Contract termination and other charges primarily reflect costs to terminate a contract before the end of its term (measured at fair value at the time the Company provided notice to the counterparty) or costs that will continue to be incurred under the contract for its remaining term without economic benefit to the Company. Asset impairment charges related to intangible assets and property, plant and equipment reflect the excess of the assets’ carrying values over their fair values.

Revenue (sales) recognition: The Company sells a wide range of products to a diversified base of customers around the world and has no material concentration of credit risk. Revenue is recognized when the risks and rewards of ownership have substantively transferred to customers. This condition normally is met when the product has been delivered or upon performance of services. The Company records estimated reductions to revenue or records expense for customer and distributor incentives, primarily comprised of rebates and free goods, at the time of the initial sale. These sales incentives are accounted for in accordance with ASC 605, Revenue Recognition. The estimated reductions of revenue for rebates are based on the sales terms, historical experience, trend analysis and projected market conditions in the various markets served. Since the Company serves numerous markets, the rebate programs offered vary across businesses, but the most common incentive relates to amounts paid or credited to customers for achieving defined volume levels or growth objectives. Free goods are accounted for as an expense and recorded in cost of sales. Sales, use, value-added and other excise taxes are not recognized in revenue.

The vast majority of 3M’s sales agreements are for standard products and services with customer acceptance occurring upon delivery of the product or performance of the service. However, to a limited extent 3M also enters into agreements that involve multiple elements (such as equipment, installation and service), software, or non-standard terms and conditions.

For non-software multiple-element arrangements, in connection with 3M’s adoption on a prospective basis of Accounting Standards Updated (ASU) No. 2009-13, Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force, to new or materially modified arrangements beginning in 2011, the Company recognizes revenue for delivered elements when they have stand-alone value to the customer, they have been accepted by the customer, and for which there are only customary refund or return rights. Arrangement consideration is allocated to the deliverables by use of the relative selling price method. The selling price used for each deliverable is based on vendor-specific objective evidence (VSOE) if available, third-party evidence (TPE) if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. Estimated selling price is determined in a manner consistent with that used to establish the price to sell the deliverable on a standalone basis. For applicable pre-existing arrangements, 3M recognizes revenue for delivered elements when the fair values of the undelivered items are known and allocation of consideration to the delivered items is most often based on the residual method. In addition to the preceding conditions under ASU No. 2009-13 and for applicable pre-existing arrangements, equipment revenue is not recorded until the installation has been completed if equipment acceptance is dependent upon installation or if installation is essential to the functionality of the equipment. Installation revenues are not recorded until installation has been completed.

For arrangements (or portions of arrangements) falling within software revenue recognition standards and that do not involve significant production, modification, or customization, revenue for each software or software-related element is recognized when the Company has VSOE of the fair value of all of the undelivered elements and applicable criteria have been met for the delivered elements. When the arrangements involve significant production, modification or customization, long-term construction-type accounting involving proportional performance is generally employed.

For prepaid service contracts, sales revenue is recognized on a straight-line basis over the term of the contract, unless historical evidence indicates the costs are incurred on other than a straight-line basis. License fee revenue is recognized as earned, and no revenue is recognized until the inception of the license term.

49

On occasion, agreements will contain milestones, or 3M will recognize revenue based on proportional performance. For these agreements, and depending on the specifics, 3M may recognize revenue upon completion of a substantive milestone, or in proportion to costs incurred to date compared with the estimate of total costs to be incurred.

Accounts receivable and allowances: Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains allowances for bad debts, cash discounts, product returns and various other items. The allowance for doubtful accounts and product returns is based on the best estimate of the amount of probable credit losses in existing accounts receivable and anticipated sales returns. The Company determines the allowances based on historical write-off experience by industry and regional economic data and historical sales returns. The Company reviews the allowance for doubtful accounts monthly. The Company does not have any significant off-balance-sheet credit exposure related to its customers.

Advertising and merchandising: These costs are charged to operations in the period incurred, and totaled $482 million in 2012, $518 million in 2011 and $512 million in 2010.

Research, development and related expenses: These costs are charged to operations in the period incurred and are shown on a separate line of the Consolidated Statement of Income. Research, development and related expenses totaled $1.634 billion in 2012, $1.570 billion in 2011 and $1.434 billion in 2010. Research and development expenses, covering basic scientific research and the application of scientific advances in the development of new and improved products and their uses, totaled $1.079 billion in 2012, $1.036 billion in 2011 and $919 million in 2010. Related expenses primarily include technical support provided by 3M to customers who are using existing 3M products; internally developed patent costs, which include costs and fees incurred to prepare, file, secure and maintain patents; and amortization of acquired patents.

Internal-use software: The Company capitalizes direct costs of materials and services used in the development of internal-use software. Amounts capitalized are amortized over a period of three to seven years, generally on a straight-line basis, unless another systematic and rational basis is more representative of the software’s use. Amounts are reported as a component of either machinery and equipment or capital leases within property, plant and equipment.

Environmental: Environmental expenditures relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed. Reserves for liabilities related to anticipated remediation costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company’s commitment to a plan of action. Environmental expenditures for capital projects that contribute to current or future operations generally are capitalized and depreciated over their estimated useful lives.

Income taxes: The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of December 31, 2012 and 2011, the Company recorded $29 million and $82 million, respectively, of valuation allowances. The Company recognizes and measures its uncertain tax positions based on the rules under ASC 740, Income Taxes.

Earnings per share: The difference in the weighted average 3M shares outstanding for calculating basic and diluted earnings per share attributable to 3M common shareholders is the result of the dilution associated with the Company’s stock-based compensation plans. Certain options outstanding under these stock-based compensation plans during the years 2012, 2011 and 2010 were not included in the computation of diluted earnings per share attributable to 3M common shareholders because they would not have had a dilutive effect (12.6 million average options for 2012, 17.4 million average options for 2011, and 26.3 million average options for 2010). The computations for basic and diluted earnings per share for the years ended December 31 follow:

50

Earnings Per Share Computations

(Amounts in millions, except per share amounts)	2012		2011		2010
Numerator:
Net income attributable to 3M	$	4,444	$	4,283	$	4,085
Denominator:
Denominator for weighted average 3M common shares outstanding — basic	693.9		708.5		713.7
Dilution associated with the Company’s stock-based compensation plans	9.4		10.5		11.8
Denominator for weighted average 3M common shares outstanding — diluted	703.3		719.0		725.5
Earnings per share attributable to 3M common shareholders — basic	$	6.40	$	6.05	$	5.72
Earnings per share attributable to 3M common shareholders — diluted	$	6.32	$	5.96	$	5.63

Stock-based compensation: The Company recognizes compensation expense for its stock-based compensation programs, which include stock options, restricted stock, restricted stock units, performance shares, and the General Employees’ Stock Purchase Plan (GESPP). Under applicable accounting standards, the fair value of share-based compensation is determined at the grant date and the recognition of the related expense is recorded over the period in which the share-based compensation vests. Refer to Note 14 for additional information.

Comprehensive income: Total comprehensive income and the components of accumulated other comprehensive income (loss) are presented in the Consolidated Statement of Comprehensive Income and the Consolidated Statement of Changes in Equity. Accumulated other comprehensive income (loss) is composed of foreign currency translation effects (including hedges of net investments in international companies), defined benefit pension and postretirement plan adjustments, unrealized gains and losses on available-for-sale debt and equity securities, and unrealized gains and losses on cash flow hedging instruments.

Derivatives and hedging activities: All derivative instruments within the scope of ASC 815, Derivatives and Hedging, are recorded on the balance sheet at fair value. The Company uses interest rate swaps, currency and commodity price swaps, and foreign currency forward and option contracts to manage risks generally associated with foreign exchange rate, interest rate and commodity market volatility. All hedging instruments that qualify for hedge accounting are designated and effective as hedges, in accordance with U.S. generally accepted accounting principles. If the underlying hedged transaction ceases to exist, all changes in fair value of the related derivatives that have not been settled are recognized in current earnings. Instruments that do not qualify for hedge accounting are marked to market with changes recognized in current earnings. Cash flows from derivative instruments are classified in the statement of cash flows in the same category as the cash flows from the items subject to designated hedge or undesignated (economic) hedge relationships. The Company does not hold or issue derivative financial instruments for trading purposes and is not a party to leveraged derivatives.

Credit risk: The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company’s risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. 3M enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between a 3M entity and the counterparty as a result of multiple, separate derivative transactions. The Company does not anticipate nonperformance by any of these counterparties. 3M has elected to present the fair value of derivative assets and liabilities within the Company’s consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation.

Fair value measurements: 3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs

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by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include 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, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Acquisitions: The Company accounts for business acquisitions in accordance with ASC 805, Business Combinations. This standard requires the acquiring entity in a business combination to recognize all (and only) the assets acquired and liabilities assumed in the transaction and establishes the acquisition-date fair value as the measurement objective for all assets acquired and liabilities assumed in a business combination. Certain provisions of this standard prescribe, among other things, the determination of acquisition-date fair value of consideration paid in a business combination (including contingent consideration) and the exclusion of transaction and acquisition-related restructuring costs from acquisition accounting.

New Accounting Pronouncements

In October 2009, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2009-13, Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force, that provides amendments to the criteria for separating consideration in multiple-deliverable arrangements. As a result of these amendments, multiple-deliverable revenue arrangements are separated in more circumstances than under pre-existing U.S. GAAP. The ASU does this by establishing a selling price hierarchy for determining the selling price of a deliverable. The selling price used for each deliverable is based on vendor-specific objective evidence (VSOE) if available, third-party evidence (TPE) if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. A vendor is required to determine its best estimate of selling price in a manner that is consistent with that used to determine the price to sell the deliverable on a standalone basis. This ASU also eliminates the residual method of allocation and requires that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method, which allocates any discount in the overall arrangement proportionally to each deliverable based on its relative selling price. The ASU does not apply to arrangements for which industry specific allocation and measurement guidance exists, such as long-term construction contracts and software transactions. For 3M, ASU No. 2009-13 was effective beginning January 1, 2011. 3M elected to adopt the provisions of this standard prospectively to new or materially modified arrangements beginning on the effective date. The adoption of this standard did not have a material impact on 3M’s consolidated results of operations or financial condition.

In October 2009, the FASB issued ASU No. 2009-14, Certain Revenue Arrangements That Include Software Elements—a consensus of the FASB Emerging Issues Task Force, that reduces the types of transactions that fall within the scope of software revenue recognition guidance. Pre-existing software revenue recognition guidance required that its provisions be applied to an entire arrangement involving the sale of any products or services containing or utilizing software when the software was considered more than incidental to the product or service. As a result of the amendments included in ASU No. 2009-14, many tangible products and services that rely on software are accounted for under the multiple-element arrangements revenue recognition guidance rather than under the software revenue recognition guidance. Under the ASU, the following components are excluded from the scope of software revenue recognition guidance: the tangible element of the product, software products bundled with tangible products where the software components and non-software components function together to deliver the product’s essential functionality, and undelivered components that relate to software that is essential to the tangible product’s functionality. The ASU also provides guidance on how to allocate transaction consideration when an arrangement contains both deliverables within the scope of software revenue guidance (software deliverables) and deliverables not within the scope of that guidance (non-software deliverables). For 3M, ASU No. 2009-14 was effective beginning January 1, 2011. 3M elected to adopt the provisions of this standard prospectively to new or materially modified arrangements beginning on the effective date. The adoption of this standard did not have a material impact on 3M’s consolidated results of operations or financial condition.

In January 2010, the FASB issued ASU No. 2010-06, Improving Disclosures About Fair Value Measurements, that amends pre-existing disclosure requirements under ASC 820 by adding required disclosures about items transferring into and out of levels 1 and 2 in the fair value hierarchy; adding separate disclosures about purchases, sales, issuances, and settlements relative to level 3 measurements; and clarifying, among other things, the pre-existing fair value disclosures about the level of disaggregation. For 3M, this ASU was effective for the first quarter of 2010, except for the requirement

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to provide level 3 activity of purchases, sales, issuances, and settlements on a gross basis, which was effective beginning the first quarter of 2011. Since this standard impacts disclosure requirements only, its adoption did not have a material impact on 3M’s consolidated results of operations or financial condition.

In April 2010, the FASB issued ASU No. 2010-17, Milestone Method of Revenue Recognition—a consensus of the FASB Emerging Issues Task Force that recognizes the milestone method as an acceptable revenue recognition method for substantive milestones in research or development arrangements. This standard requires its provisions be met in order for an entity to recognize consideration that is contingent upon achievement of a substantive milestone as revenue in its entirety in the period in which the milestone is achieved. In addition, this ASU requires disclosure of certain information with respect to arrangements that contain milestones. For 3M, this standard was effective prospectively beginning January 1, 2011. The adoption of this standard did not have a material impact on 3M’s consolidated results of operations or financial condition.

In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. This standard clarifies guidance on how to measure fair value and is largely consistent with existing fair value measurement principles. The ASU also expands existing disclosure requirements for fair value measurements and makes other amendments. For 3M, this ASU was effective prospectively beginning January 1, 2012. The adoption of this standard did not have a material impact on 3M’s consolidated results of operations or financial condition.

In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income, and in December 2011 issued ASU No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassification of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05. These standards require entities to present items of net income and other comprehensive income either in a single continuous statement, or in separate, but consecutive, statements of net income and other comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or other comprehensive income, or when an item of other comprehensive income must be reclassified to net income. Also, the earnings-per share computation does not change. However, the option under previous standards to report other comprehensive income and its components in the statement of changes in equity was eliminated. For 3M, these standards were effective retrospectively beginning January 1, 2012, with early adoption permitted. 3M adopted these standards in the fourth quarter of 2011. Since these standards impact presentation and disclosure requirements only, their adoption did not have a material impact on 3M’s consolidated results of operations or financial condition.

In September 2011, the FASB issued ASU No. 2011-08, Testing Goodwill for Impairment. Under this standard, entities testing goodwill for impairment now have an option of performing a qualitative assessment before having to calculate the fair value of a reporting unit. If an entity determines, on the basis of qualitative factors, that the fair value of the reporting unit is more-likely-than-not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. For 3M, this ASU was effective beginning January 1, 2012, with early adoption permitted under certain conditions. The adoption of this standard did not have a material impact on 3M’s consolidated results of operations or financial condition.

In December 2011, the FASB issued ASU No. 2011-11, Disclosures About Offsetting Assets and Liabilities, and in January 2013 issued ASU No. 2013-01, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities. These standards created new disclosure requirements regarding the nature of an entity’s rights of setoff and related arrangements associated with its derivative instruments, repurchase agreements, and securities lending transactions. Certain disclosures of the amounts of certain instruments subject to enforceable master netting arrangements are required, irrespective of whether the entity has elected to offset those instruments in the statement of financial position. For 3M, these ASUs were effective January 1, 2013 with retrospective application required. The requirements of these standards have been applied retrospectively to all periods presented in this Current Report on Form 8-K and are included in Note 11. Since these standards impact disclosure requirements only, their adoption did not have a material impact on 3M’s consolidated results of operations or financial condition.

In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. Under this standard, entities testing long-lived intangible assets for impairment now have an option of performing a qualitative assessment to determine whether further impairment testing is necessary. If an entity determines, on the basis of qualitative factors, that the fair value of the indefinite-lived intangible asset is more-likely-than-not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. For 3M, this ASU is effective beginning January 1, 2013, with early adoption permitted under certain conditions. The adoption of this standard is not expected to have a material impact on 3M’s consolidated results of operations or financial condition.

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In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under this standard, entities are required to disclose additional information with respect to changes in accumulated other comprehensive income (AOCI) balances by component and significant items reclassified out of AOCI. Expanded disclosures for presentation of changes in AOCI involve disaggregating the total change of each component of other comprehensive income (for example, unrealized gains or losses on available for sale marketable securities) as well as presenting separately for each such component the portion of the change in AOCI related to (1) amounts reclassified into income and (2) current-period other comprehensive income. Additionally, for amounts reclassified into income, disclosure in one location is required, based upon each specific AOCI component, of the amounts impacting individual income statement line items. Disclosure of the income statement line item impacts is required only for components of AOCI reclassified into income in their entirety. Therefore, disclosure of the income statement line items affected by AOCI components such as net periodic benefit costs is not included. The disclosures required with respect to income statement line item impacts are to be made in either the notes to the consolidated financial statements or parenthetically on the face of the financial statements. For 3M, this ASU was effective beginning January 1, 2013. The requirements of this standard have been applied retrospectively to all periods presented in this Current Form on Form 8-K and are included in Note 5. Because this standard only impacted presentation and disclosure requirements, its adoption did not have a material impact on 3M’s consolidated results of operations or financial condition.

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NOTE 2.  Acquisitions

3M makes acquisitions of certain businesses from time to time that the Company feels align with its strategic intent with respect to, among other factors, growth markets and adjacent product lines or technologies.

The impact on the consolidated balance sheet of the purchase price allocations related to acquisitions, including adjustments relative to other acquisitions within the allocation period, follows. The allocations of purchase price related to the acquisitions of the business purchased from Federal Signal Corp. in September 2012, and Ceradyne, Inc. in November 2012 are considered preliminary, largely with respect to certain acquired property, plant and equipment; intangible assets; and tax-related assets and liabilities. Adjustments in 2012 to the preliminary purchase price allocations of other acquisitions within the allocation period were not material and primarily related to the 2011 acquisitions of Winterthur Technologie AG and the business acquired from GPI Group.

	2012 Acquisition Activity
(Millions)				Other
Asset (Liability)	Ceradyne, Inc.			Acquisitions			Total
Accounts receivable	$	55		$	29		$	84
Inventory	112			13			125
Other current assets	36			1			37
Marketable securities	250			—			250
Property, plant, and equipment	238			3			241
Purchased finite-lived intangible assets	127			86			213
Purchased indefinite-lived intangible assets	—			2			2
Purchased goodwill	198			141			339
Accounts payable and other liabilities, net of other assets	(100		)	(27		)	(127		)
Interest bearing debt	(93		)	(3		)	(96		)
Deferred tax asset/(liability)	(25		)	3			(22		)
Net assets acquired	$	798		$	248		$	1,046
Supplemental information:
Cash paid	$	850		$	248		$	1,098
Less: Cash acquired	52			—			52
Cash paid, net of cash acquired	$	798		$	248		$	1,046

	2011 Acquisitions Activity
(Millions)	Winterthur			Other
Asset (Liability)	Technologie AG			Acquisitions			Total
Accounts receivable	$	45		$	61		$	106
Inventory	69			59			128
Other current assets	6			36			42
Property, plant, and equipment	73			102			175
Purchased finite-lived intangible assets	226			116			342
Purchased goodwill	147			112			259
Accounts payable and other liabilities, net of other assets	(70		)	(78		)	(148		)
Interest bearing debt	(79		)	(24		)	(103		)
Deferred tax asset/(liability)	(58		)	(28		)	(86		)
Net assets acquired	$	359		$	356		$	715
Noncontrolling interest	(56		)	—			(56		)
Net assets acquired excluding noncontrolling interest	$	303		$	356		$	659
Supplemental information:
Cash paid	$	327		$	376		$	703
Less: Cash acquired	34			20			54
Cash paid, net of cash acquired	$	293		$	356		$	649
Non-cash	10			—			10
Net assets acquired excluding noncontrolling interest	$	303		$	356		$	659

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	2010 Acquisitions Activity
				Attenti
(Millions)				Holdings			Cogent			Other
Asset (Liability)	Arizant Inc.			S.A.			Inc.			Acquisitions			Total
Accounts receivable	$	15		$	23		$	34		$	21		$	93
Inventory	36			5			17			19			77
Other current assets	3			7			31			2			43
Marketable securities	—			—			380			—			380
Property, plant, and equipment	38			9			30			29			106
Purchased finite-lived intangible assets	362			90			142			69			663
Purchased goodwill	512			122			295			51			980
Accounts payable and other liabilities, net of other assets	(29		)	(12		)	(88		)	(35		)	(164		)
Interest bearing debt	(31		)	(21		)	—			(53		)	(105		)
Deferred tax asset/(liability)	(141		)	(16		)	(47		)	(21		)	(225		)
Net assets acquired	$	765		$	207		$	794		$	82		$	1,848
Supplemental information:
Cash paid	$	776		$	227		$	946		$	156		$	2,105
Less: Cash acquired	11			20			152			92			275
Cash paid, net of cash acquired	$	765		$	207		$	794		$	64		$	1,830
Non-cash (financed liability)	—			—			—			18			18
Net assets acquired	$	765		$	207		$	794		$	82		$	1,848

Goodwill resulting from business combinations is largely attributable to the existing workforce of the acquired businesses and synergies expected to arise after 3M’s acquisition of these businesses. In-process research and development associated with CodeRyte, Inc. is reflected in the preceding 2012 table as purchased indefinite-lived intangible assets. Pro forma information related to acquisitions was not included because the impact on the Company’s consolidated results of operations was not considered to be material.

In addition to business combinations, 3M periodically acquires certain tangible and/or intangible assets and purchases interests in certain enterprises that do not otherwise qualify for accounting as business combinations. These transactions are largely reflected as additional asset purchase and investment activity.

2012 acquisitions:

During 2012, 3M completed three business combinations. The purchase price paid for these business combinations (net of cash acquired) and the impact of other matters (net) during 2012 aggregated to $1.046 billion.

(1) In April 2012, 3M (Health Care Business) purchased all of the outstanding shares of CodeRyte, Inc., an industry leader in clinical natural processing technology and computer-assisted coding solutions for healthcare outpatient providers, which is headquartered in Bethesda, Maryland.

(2) In September 2012, 3M (Safety and Graphics Business) purchased the net assets of Federal Signal Technologies Group from Federal Signal Corp., for a total purchase price of approximately $104 million. This business focuses on electronic toll collection and parking management hardware and software services, with primary facilities spread throughout the United States and in the U.K.

(3) In November 2012, 3M (Industrial Business) purchased all of the outstanding shares of Ceradyne, Inc. (Ceradyne) for $798 million, net of cash acquired. The net assets acquired in this transaction included $250 million of marketable securities and $93 million of debt, as indicated in the preceding 2012 table. Ceradyne, headquartered in Costa Mesa, California, is involved in the development and production of advanced technical ceramics for demanding applications in the automotive, oil and gas, solar, industrial, electronics and defense industries.

In December 2011, 3M (Consumer Business) entered into a definitive agreement to acquire the Office and Consumer Products business of Avery Dennison Corp. (Avery). 3M and Avery withdrew from the regulatory approval process for this acquisition in September 2012 and subsequently announced that they had terminated this agreement in October 2012. 3M has no remaining obligations resulting from the termination of this agreement.

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Purchased identifiable finite-lived intangible assets related to acquisition activity in 2012 totaled $213 million. The associated finite-lived intangible assets acquired in 2012 will be amortized generally on a straight-line basis over a weighted-average life of 12 years (lives ranging from two to 20 years). Acquired in-process research and development and identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

2011 acquisitions:

During 2011, 3M completed nine business combinations. The purchase price paid for these business combinations (net of cash acquired) and the impact of other matters (net) during 2011 aggregated to $649 million.

(1) In January 2011, 3M (Industrial Business) purchased certain assets of Nida-Core Corp., a manufacturer of structural honeycomb core and fiber-reinforced foam core materials based in Port St. Lucie, Florida.

(2) In February 2011, 3M (Industrial Business) announced that it completed its acquisition of all of the outstanding shares of Alpha Beta Enterprise Co. Ltd., a manufacturer of box sealing tape and masking tape headquartered in Taipei, Taiwan.

(3) In February 2011, 3M (Consumer Business) purchased all of the outstanding shares of Hybrivet Systems Inc., a provider of instant-read products to detect lead and other contaminants and toxins, which is based in Natick, Massachusetts.

(4) In early March 2011, 3M (Industrial Business) acquired a controlling interest in Winterthur via completion of a public tender offer. Winterthur, based in Zug, Switzerland, is a leading global supplier of precision grinding technology serving customers in the area of hard-to-grind precision applications in industrial, automotive, aircraft and cutting tools. As of the settlement date of the tendered shares (the business acquisition date), 3M owned approximately 86 percent of Winterthur shares via the tender and previous open market share purchases. The purchase price paid in the preceding table includes non-cash consideration of $10 million representing the business acquisition date fair value of shares previously owned by 3M as of December 31, 2010 and cash consideration paid, net of cash acquired, of $293 million for subsequently tendered and open market purchased shares through the business acquisition date. Following the business acquisition date, 3M purchased the remaining outstanding shares of its consolidated Winterthur subsidiary, increasing 3M’s ownership interest to 100 percent as of December 31, 2011 as discussed in Note 5.

(5) In April 2011, 3M (Electronics and Energy Business) purchased all of the outstanding shares of AP&T Co. Ltd., based in Korea, which provides advanced sputtering and plating services, materials and manufacturing capabilities for flexible circuits for the mobile hand-held, touch-screen panel and display markets.

(6) In April 2011, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Original Wraps Inc., a company specializing in the creative business development, technology and design of personalization platforms for vehicles and vehicle accessories, which is based in Golden, Colorado.

(7) In July 2011, 3M (Industrial Business) purchased all of the outstanding shares of Advanced Chemistry & Technology Inc., a manufacturer of quick-cure, light-weight polysulfide sealants for aerospace applications, which is based in Garden Grove, California.

(8) In July 2011, 3M (Industrial Business) purchased certain assets of Piranha Plastics LLC, based in Santa Clara, California, which provides plastic molding and paint solutions to the automotive aftermarket.

(9) In October 2011, 3M (Consumer Business) acquired the do-it-yourself and professional business of GPI Group. GPI, headquartered in France, is a manufacturer and marketer of home improvement products such as tapes, hooks, insulation, and floor protection products and accessories.

Purchased identifiable finite-lived intangible assets related to acquisition activity in 2011 totaled $342 million. The associated finite-lived intangible assets acquired in 2011 will be amortized generally on a straight-line basis over a weighted-average life of 14 years (lives ranging from three to 20 years). Acquired identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

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2010 acquisitions:

During 2010, 3M completed ten business combinations. The purchase price paid for these business combinations (net of cash acquired), contingent consideration paid for pre-2009 business combinations, and the impact of other matters (net) during 2010 aggregated to $1.83 billion. In addition, the Company recorded a financed liability of 1.7 billion Japanese Yen (approximately $18 million based on acquisition date exchange rates) as non-cash investing and financing activity, which related to April 2010 acquisition of the A-One branded label business and related operations (discussed further below).

(1) In January 2010, 3M (Consumer Business) purchased all of the outstanding shares of Incavas Industria de Cabos e Vassouras Ltda., a manufacturer of floor care products based in Rio Grande do Sul, Brazil.

(2) In April 2010, 3M (Consumer Business) purchased a majority stake in the A-One branded label business and related operations, which is headquartered in Tokyo, Japan and has manufacturing, distribution and sales locations around Japan. The terms of this acquisition included embedded mirroring put and call options for a fixed price and five-year term with respect to the remaining minority shares. Accordingly, 3M recorded this business combination as an acquisition of all outstanding interests with a corresponding five-year financed liability of 1.7 billion Japanese Yen relative to the embedded put/call option as of the acquisition date. The Company records interest on this liability, which is recorded in other liabilities, at an annual rate of 1%.

(3) In May 2010, 3M (Health Care Business) purchased certain assets of J.R. Phoenix Ltd., a manufacturer of hand hygiene and skin care products for health care and professional use based in Kitchener, Ontario, Canada.

(4) In June 2010, 3M (Industrial Business) purchased all of the outstanding shares of MTI PolyFab Inc., a manufacturer of thermal and acoustic insulation for the aerospace industry. MTI PolyFab Inc. is based in Mississauga, Ontario, Canada.

(5) In July 2010, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Dailys Limited, a supplier of non-woven disposable protective clothing, primarily chemical protective coveralls for industrial use. Dailys Limited is based in Ellesmere Port, United Kingdom.

(6) In October 2010, 3M (Consumer Business) purchased certain assets of Ross Outdoor Sports Specialties, LLC, a Colorado-based manufacturer of fly fishing equipment and accessories.

(7) In October 2010, 3M (Health Care Business) purchased all of the outstanding shares of Hangzhou ORJ Medical Instrument and Material Co., Ltd., a manufacturer of orthodontic supplies based in Hangzhou, China.

(8) In October 2010, 3M (Health Care Business) purchased all of the outstanding shares of Arizant Inc., a manufacturer of patient warming solutions designed to prevent hypothermia in surgical settings based in Eden Prairie, Minnesota.

(9) In October 2010, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Attenti Holdings S.A., a Tel Aviv, Israel-based supplier of remote people-monitoring technologies used for offender-monitoring applications and to assist eldercare facilities in monitoring and enhancing the safety of patients.

(10) In October 2010, 3M (Safety and Graphics Business) acquired a controlling interest in Cogent Inc. via a tender offer, and in December 2010 completed a second-step merger for the same amount per outstanding share as the tender offer, thereby acquiring the remaining noncontrolling interest in the company. Cogent Inc., based in Pasadena, California, is a provider of finger, palm, face and iris biometric systems for governments, law enforcement agencies, and commercial enterprises. The consideration paid in the preceding table includes $248 million related to the December 2010 acquisition of the remaining noncontrolling interest in Cogent, Inc. Net assets acquired in the Cogent Inc. transaction included $532 million of cash and marketable securities, as indicated in the preceding 2010 table.

Purchased identifiable intangible assets related to the acquisition activity in 2010 totaled $663 million. The associated finite-lived intangible assets acquired in 2010 will be amortized generally on a straight-line basis over a weighted-average life of 11 years (lives ranging from two to 17 years). Acquired identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

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NOTE 3.  Goodwill and Intangible Assets

Purchased goodwill from acquisitions totaled $327 million in 2012, $41 million of which is deductible for tax purposes. Purchased goodwill from acquisitions totaled $255 million in 2011, $7 million of which is deductible for tax purposes. The acquisition activity in the following table also includes the net impact of adjustments to the preliminary allocation of purchase price for prior year acquisitions, which increased goodwill by $12 million in 2012 and increased goodwill by $4 million in 2011. The amounts in the “Translation and other” column in the following table primarily relate to changes in foreign currency exchange rates. The goodwill balance by business segment follows:

Goodwill

	Dec. 31,		2011		2011			Dec. 31,		2012		2012			Dec. 31,
	2010		acquisition		translation			2011		acquisition		translation			2012
(Millions)	Balance		activity		and other			Balance		activity		and other			Balance
Industrial	$	1,761	$	205	$	6		$	1,972	$	204	$	(2	)	$	2,174
Safety and Graphics	1,746		3		(36		)	1,713		41		(3		)	1,751
Electronics and Energy	1,591		6		11			1,608		—		14			1,622
Health Care	1,517		3		(12		)	1,508		88		2			1,598
Consumer	205		42		(1		)	246		6		(12		)	240
Total Company	$	6,820	$	259	$	(32	)	$	7,047	$	339	$	(1	)	$	7,385

As discussed in Note 15, effective in the first quarter of 2013, 3M completed a realignment of its business segments. Concurrent with this business segment realignment, certain products were also moved between business segments, with the resulting impact reflected in the goodwill balances by business segment above for all periods presented. For any product moves that resulted in reporting unit changes, the Company applied the relative fair value method to determine the impact on goodwill of the associated reporting units. During the first quarter of 2013, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed. The Company also completed its annual goodwill impairment test in the fourth quarter of 2012 for all reporting units and determined that no impairment existed. In addition, the Company had no impairments of goodwill in prior years.

Acquired Intangible Assets

For 2012, intangible assets (excluding goodwill) acquired through business combinations increased the gross carrying amount by $213 million. Balances are also impacted by changes in foreign currency exchange rates. The gross carrying amount and accumulated amortization of acquired intangible assets as of December 31, follow:

(Millions)	2012			2011
Patents	$	596		$	561
Other amortizable intangible assets (primarily tradenames and customer related intangibles)	2,456			2,323
Total gross carrying amount	$	3,052		$	2,884
Accumulated amortization — patents	(421		)	(374		)
Accumulated amortization — other	(833		)	(717		)
Total accumulated amortization	$	(1,254	)	$	(1,091	)
Total finite-lived intangible assets — net	$	1,798		$	1,793
Non-amortizable intangible assets (primarily tradenames)	127			123
Total intangible assets — net	$	1,925		$	1,916

3M has certain tradenames that are not amortized because of the long-time established name recognition in their respective industries.

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Amortization expense for the years ended December 31 follows:

(Millions)	2012		2011		2010
Amortization expense	$	233	$	235	$	176

Expected amortization expense for acquired amortizable intangible assets recorded as of December 31, 2012 follows:

											After
(Millions)	2013		2014		2015		2016		2017		2017
Amortization expense	$	239	$	214	$	200	$	186	$	171	$	788

The preceding expected amortization expense is an estimate. Actual amounts of amortization expense may differ from estimated amounts due to additional intangible asset acquisitions, changes in foreign currency exchange rates, impairment of intangible assets, accelerated amortization of intangible assets and other events. 3M expenses the costs incurred to renew or extend the term of intangible assets.

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NOTE 4.  Supplemental Balance Sheet Information

Accounts payable (included as a separate line item in the Consolidated Balance Sheet) includes drafts payable on demand of $74 million at December 31, 2012, and $82 million at December 31, 2011. Accumulated depreciation for capital leases totaled $73 million and $60 million as of December 31, 2012, and 2011, respectively. Additional supplemental balance sheet information is provided in the table that follows.

(Millions)	2012			2011
Other current assets
Prepaid expenses and other	$	555		$	676
Deferred income taxes	472			385
Derivative assets-current	49			107
Product and other insurance receivables	125			109
Total other current assets	$	1,201		$	1,277
Investments
Equity method	$	105		$	98
Cost method	47			47
Other investments	11			10
Total investments	$	163		$	155
Property, plant and equipment - at cost
Land	$	413		$	377
Buildings and leasehold improvements	6,975			6,587
Machinery and equipment	14,190			13,240
Construction in progress	791			814
Capital leases	156			148
Gross property, plant and equipment	22,525			21,166
Accumulated depreciation	(14,147		)	(13,500		)
Property, plant and equipment - net	$	8,378		$	7,666
Other assets
Deferred income taxes	$	578		$	1,018
Product and other insurance receivables	139			151
Cash surrender value of life insurance policies	230			223
Other assets	270			264
Total other assets	$	1,217		$	1,656
Other current liabilities
Accrued trade payables	$	516		$	516
Deferred income	471			389
Derivative liabilities	106			49
Restructuring actions	31			6
Employee benefits and withholdings	178			160
Product and other claims	147			159
Property and other taxes	87			94
Pension and postretirement benefits	55			53
Deferred income taxes	45			23
Other	645			636
Total other current liabilities	$	2,281		$	2,085
Other liabilities
Long term income taxes payable	$	454		$	595
Employee benefits	332			351
Product and other claims	314			329
Capital lease obligations	71			79
Deferred income	29			19
Deferred income taxes	167			251
Other	267			233
Total other liabilities	$	1,634		$	1,857

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NOTE 5.  Supplemental Equity and Comprehensive Income Information

Common stock ($.01 par value per share) of 3.0 billion shares is authorized, with 944,033,056 shares issued. Treasury stock is reported at cost, with 256,941,406 shares at December 31, 2012, 249,063,015 shares at December 31, 2011, and 232,055,448 shares at December 31, 2010. Preferred stock, without par value, of 10 million shares is authorized but unissued.

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component

(Millions)	Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2009, net of tax	$	122		$	(3,831	)	$	(9	)	$	(36	)	$	(3,754	)
Other comprehensive income (loss), before tax:
Amounts before reclassifications	213			(374		)	5			(9		)	(165		)
Amounts reclassified out	—			306			—			15			321
Total other comprehensive income (loss), before tax	213			(68		)	5			6			156
Tax effect	(8		)	28			(2		)	(2		)	16
Total other comprehensive income (loss), net of tax	205			(40		)	3			4			172
Purchase of subsidiary shares, net of tax	47			(8		)	—			—			39
Balance at December 31, 2010, net of tax	$	374		$	(3,879	)	$	(6	)	$	(32	)	$	(3,543	)
Other comprehensive income (loss), before tax:
Amounts before reclassifications	(253		)	(2,452		)	(10		)	(50		)	(2,765		)
Amounts reclassified out	—			475			10			134			619
Total other comprehensive income (loss), before tax	(253		)	(1,977		)	—			84			(2,146		)
Tax effect	(7		)	701			—			(30		)	664
Total other comprehensive income (loss), net of tax	(260		)	(1,276		)	—			54			(1,482		)
Balance at December 31, 2011, net of tax	$	114		$	(5,155	)	$	(6	)	$	22		$	(5,025	)
Other comprehensive income (loss), before tax:
Amounts before reclassifications	133			(204		)	6			(10		)	(75		)
Amounts reclassified out	—			615			—			(59		)	556
Total other comprehensive income (loss), before tax	133			411			6			(69		)	481
Tax effect	(17		)	(211		)	(2		)	24			(206		)
Total other comprehensive income (loss), net of tax	116			200			4			(45		)	275
Balance at December 31, 2012, net of tax	$	230		$	(4,955	)	$	(2	)	$	(23	)	$	(4,750	)

Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation does include impacts from items such as net investment hedge transactions. Reclassification adjustments are made to avoid double counting in comprehensive income items that are also recorded as part of net income.

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Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M

	Amount Reclassified from
	Accumulated Other Comprehensive Income
(Millions)	Year ended			Year ended			Year ended
Details about Accumulated Other Comprehensive Income Components	December 31, 2012			December 31, 2011			December 31, 2010			Location on Income Statement
Gains (losses) associated with, defined benefit pension and postretirement plans amortization
Transition asset	$	1		$	2		$	(1	)	See Note 10
Prior service benefit	84			75			85			See Note 10
Net actuarial loss	(700		)	(552		)	(390		)	See Note 10
Total before tax	(615		)	(475		)	(306		)
Tax effect	219			168			109			Provision for income taxes
Net of tax	$	(396	)	$	(307	)	$	(197	)
Debt and equity security gains (losses) Sales or impairments of securities	$	—		$	(10	)	$	—		Selling, general and administrative expenses
Total before tax	—			(10		)	—
Tax effect	—			4			—			Provision for income taxes
Net of tax	$	—		$	(6	)	$	—
Cash flow hedging instruments gains (losses)
Foreign currency forward/option contracts	$	41		$	(87	)	$	(39	)	Cost of sales
Foreign currency forward contracts	29			(41		)	33			Interest expense
Commodity price swap contracts	(10		)	(6		)	(9		)	Cost of sales
Interest rate swap contracts	(1		)	—			—			Interest expense
Total before tax	59			(134		)	(15		)
Tax effect	(21		)	48			6			Provision for income taxes
Net of tax	$	38		$	(86	)	$	(9	)
Total reclassifications for the period, net of tax	$	(358	)	$	(399	)	$	(206	)

Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interests Involving Non-Wholly Owned Subsidiaries

As discussed in Note 2, in early March 2011, 3M acquired a controlling interest in Winterthur Technologie AG (Winterthur), making Winterthur a consolidated subsidiary as of that business acquisition date. Subsequent to this business acquisition date, 3M purchased additional outstanding shares of its Winterthur subsidiary increasing 3M’s ownership interest from approximately 86 percent as of the business acquisition date to 100 percent as of December 31, 2011. The $57 million of cash paid in 2011 as a result of these additional purchases of Winterthur shares was classified as other financing activity in the consolidated statement of cash flows. These additional purchases did not result in a material transfer from noncontrolling interest to 3M Company shareholders’ equity. In addition, during 2011, 3M sold a noncontrolling interest in a newly formed subsidiary for an immaterial amount, which was also classified as other financing activity in the consolidated statement of cash flows.

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During the second half of 2009 and the first half of 2010, 3M effected a purchase of subsidiary shares and transfers of ownership interests to align activities in Japan and to simplify the Company’s ownership structure. As a result of these activities, beginning in June 2010 the Company has a wholly owned subsidiary in the region in addition to its majority owned Sumitomo 3M Limited entity (Sumitomo 3M). Because the Company retained its controlling interest in the subsidiaries involved, these activities resulted in changes to 3M Company shareholders’ equity and noncontrolling interest. These activities included the following:

·During the second half of 2009, a wholly owned subsidiary that, in turn, owned a portion of the Company’s majority owned Sumitomo 3M, was transferred to another subsidiary (referred to herein as 3M HC) that was majority, rather than wholly, owned. Sumitomo 3M also owned a portion of 3M HC. As a result of the transaction, 3M’s effective ownership in Sumitomo 3M was reduced from 75 percent to 71.5 percent. The transfer resulted in a decrease in 3M Company shareholders’ equity and an increase in noncontrolling interest of $81 million in the second half of 2009.

·During the first quarter of 2010, majority owned 3M HC which, as a result of the transfer above owned a portion of the Company’s majority owned Sumitomo 3M, transferred this interest to Sumitomo 3M. In addition, Sumitomo 3M purchased a portion of its shares held by its noncontrolling interest, Sumitomo Electric Industries, Ltd. (SEI), by paying cash of 5.8 billion Japanese Yen and entering into a note payable to SEI of 17.4 billion Japanese Yen (approximately $63 million and $188 million, respectively, based on applicable exchange rates at that time). As a result of these transactions, 3M’s effective ownership in Sumitomo 3M was increased from 71.5 percent to 75 percent. The cash paid as a result of the purchase of Sumitomo 3M shares from SEI was classified as other financing activity in the consolidated statement of cash flows. The remainder of the purchase financed by the note payable to SEI was considered non-cash financing activity in the first quarter of 2010. These transactions resulted in an increase in 3M Company shareholders’ equity of $22 million and a decrease in noncontrolling interest of $278 million in the first quarter of 2010.

·During the second quarter of 2010, majority owned Sumitomo 3M transferred its interest in 3M HC to 3M HC. As a result of this transaction, 3M HC became wholly owned by the Company. The transfer resulted in an increase in 3M Company shareholders’ equity and a decrease in noncontrolling interest of $24 million in the second quarter of 2010.

3M also acquired the remaining noncontrolling interest of a previously majority owned subsidiary for an immaterial amount during the first half of 2010. In addition, as discussed in Note 2, in October 2010 3M acquired a controlling interest in Cogent Inc. via a tender offer and in December 2010 completed a second-step merger for the same amount per outstanding share as the tender offer, thereby acquiring the remaining noncontrolling interest in Cogent Inc. The resulting October 2010 increase and December 2010 decrease in noncontrolling interest associated with the Cogent Inc. transactions are presented netting to zero with respect to the amount impacting noncontrolling interest in the consolidated statement of changes in equity. However, the December 2010 transaction resulted in an immaterial transfer from noncontrolling interest to 3M Company shareholders’ equity.

The following table summarizes the effects of the 2010 transactions on equity attributable to 3M Company shareholders.

(Millions)	2010
Net income attributable to 3M	$	4,085
Transfers from noncontrolling interest	43
Change in 3M Company shareholders’ equity from net income attributable to 3M and transfers from noncontrolling interest	$	4,128

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NOTE 6.  Supplemental Cash Flow Information

(Millions)	2012		2011		2010
Cash income tax payments, net of refunds	$	1,717	$	1,542	$	1,509
Cash interest payments	166		219		178
Capitalized interest	23		19		17

Cash interest payments include interest paid on debt and capital lease balances, including net interest payments/receipts related to accreted debt discounts/premiums, as well as net interest payments/receipts associated with interest rate swap contracts.

Individual amounts in the Consolidated Statement of Cash Flows exclude the impacts of acquisitions, divestitures and exchange rate impacts, which are presented separately.

Transactions related to investing and financing activities with significant non-cash components are as follows:

·During 2010, Sumitomo 3M purchased a portion of its shares held by its noncontrolling interest, Sumitomo Electric Industries, Ltd. (SEI), by paying cash of 5.8 billion Japanese Yen and entering into a note payable to SEI of 17.4 billion Japanese Yen. The cash paid as a result of the purchase of Sumitomo 3M shares from SEI was classified as other financing activity in the consolidated statement of cash flows. The remainder of the purchase financed by the note payable to SEI was considered non-cash financing activity in the first quarter of 2010. This is described in Note 5 in the section entitled “Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interests Involving Non-Wholly Owned Subsidiaries”.

·Also in 2010, as discussed in Note 2, the Company recorded a financed liability of 1.7 billion Japanese Yen related to the A-One acquisition.

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NOTE 7.  Income Taxes

Income Before Income Taxes

(Millions)	2012		2011		2010
United States	$	2,902	$	2,516	$	2,778
International	3,449		3,515		2,977
Total	$	6,351	$	6,031	$	5,755

Provision for Income Taxes

(Millions)	2012			2011		2010
Currently payable
Federal	$	743		$	431	$	837
State	75			51		73
International	918			861		796
Deferred
Federal	(3		)	181		55
State	10			12		43
International	97			138		(212		)
Total	$	1,840		$	1,674	$	1,592

Components of Deferred Tax Assets and Liabilities

(Millions)	2012			2011
Deferred tax assets:
Accruals not currently deductible
Employee benefit costs	$	115		$	96
Product and other claims	161			155
Miscellaneous accruals	137			133
Pension costs	969			1,183
Stock-based compensation	415			483
Net operating/capital loss carryforwards	304			392
Foreign tax credits	285			286
Inventory	189			174
Other - net	18			―
Gross deferred tax assets	2,593			2,902
Valuation allowance	(29		)	(82		)
Total deferred tax assets	$	2,564		$	2,820
Deferred tax liabilities:
Product and other insurance receivables	$	(60	)	$	(63	)
Accelerated depreciation	(858		)	(745		)
Intangible amortization	(808		)	(799		)
Other	―			(84		)
Total deferred tax liabilities	$	(1,726	)	$	(1,691	)
Net deferred tax assets	$	838		$	1,129

The net deferred tax assets are included as components of Other Current Assets, Other Assets, Other Current Liabilities, and Other Liabilities within the Consolidated Balance Sheet. See Note 4 “Supplemental Balance Sheet Information” for further details.

As of December 31, 2012, the Company had tax effected federal, state, and international operating loss, capital loss, and tax credit carryovers of approximately $43 million, $11 million, and $250 million (before valuation allowances), respectively. The federal tax attribute carryovers will expire after seventeen to nineteen years, the state after five to ten years, and the majority of international after seven years with the remaining international expiring in one year or with an indefinite carryover period. The tax attributes being carried over arise as certain jurisdictions may have tax losses or may

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have inabilities to utilize certain losses without the same type of taxable income. The Company has provided $29 million of valuation allowance against certain of these deferred tax assets based on management’s determination that it is more-likely-than-not that the tax benefits related to these assets will not be realized. The valuation allowance was reduced in 2012 due to the closure of audits with certain taxing authorities.

During 2012, the Company contributed $1.079 billion to its U.S. and international pension plans and $67 million to its postretirement plans. During 2011, the Company contributed $517 million to its U.S. and international pension plans and $65 million to its postretirement plans. During 2010, the Company contributed $556 million to its U.S. and international pension plans and $62 million to its postretirement plans. The current income tax provision includes a benefit for the pension contributions; the deferred tax provision includes a cost for the related temporary difference.

Reconciliation of Effective Income Tax Rate

	2012		2011		2010
Statutory U.S. tax rate	35.0	%	35.0	%	35.0	%
State income taxes - net of federal benefit	0.9		0.7		1.2
International income taxes - net	(4.2	)	(4.6	)	(7.1	)
U.S. research and development credit	—		(0.5	)	(0.2	)
Reserves for tax contingencies	(1.9	)	(1.2	)	(0.5	)
Medicare Modernization Act, one-time charge	—		—		1.5
Domestic Manufacturer’s deduction	(1.2	)	(1.5	)	(1.4	)
All other - net	0.4		(0.1	)	(0.8	)
Effective worldwide tax rate	29.0	%	27.8	%	27.7	%

The effective tax rate for 2012 was 29.0 percent, compared to 27.8 percent in 2011, an increase of 1.2 percentage points. Various factors increased or decreased the effective tax rate when compared to the same periods last year. The primary factors that increased the Company’s effective tax rate year-on-year include international taxes, specifically with respect to the corporate reorganization of a wholly owned international subsidiary (which benefited 2011), state income taxes, lower domestic manufacturer’s deduction, and the lapse of the U.S. research and development credit. These and other factors, when compared to 2011, increased the 2012 effective tax rate by 2.1 percentage points. Factors that decreased the Company’s effective tax rate year-on-year include international taxes as a result of changes to the geographic mix of income before taxes and adjustments to its income tax reserves. These factors, when compared to last year, decreased the effective tax rate 0.9 percentage points.

On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law. Included in this Act was the extension of the research and development credit for years 2012 and 2013. As this Act was enacted during 2013, the impacts of this law are not included in the 2012 financial results. The Company anticipates a beneficial impact on the effective tax rate in 2013 for both the 2012 and 2013 research and development credit.

The effective tax rate for 2011 was 27.8 percent, compared to 27.7 percent in 2010, an increase of 0.1 percentage points. The year-on-year change in international income taxes increased the effective tax rate for 2011 when compared to 2010 by approximately 2.5 percentage points, which includes a partial offsetting benefit from the corporate reorganization of a wholly owned international subsidiary in 2011. This 2.5 percentage point net increase was due primarily to certain 2010 tax benefits, which did not repeat in 2011, related to net operating losses partially offset by a valuation allowance resulting from the 2010 corporate alignment transactions that allowed the Company to increase its ownership of a foreign subsidiary. These transactions are described in the section of Note 5 entitled “Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interest Involving Non-Wholly Owned Subsidiaries”. Other significant items impacting the year-on-year comparison include a one-time 2010 income tax charge of $84 million (discussed further below), which benefited the 2011 tax rate when compared to 2010 by 1.5 percentage points, as this charge did not repeat in 2011. The Company’s effective tax rate also benefited during 2011 when compared to 2010 by approximately 0.7 percentage points from adjustments to its income tax reserves.

Under a Federal program (Medicare Modernization Act) that was established to encourage companies to provide retiree prescription drug coverage, many companies, including 3M, received a tax-advantaged subsidy. The tax advantage of the subsidy was eliminated by the Patient Protection and Affordable Care Act (H.R. 3590), including modifications included in the Health Care and Education Reconciliation Act of 2010 (collectively, the “Act’), which were enacted in March 2010. Although the elimination of this tax advantage does not take effect until 2013 under the Act, 3M was required to recognize the full accounting impact in its financial statements in the period in which the Act was enacted. Because future anticipated retiree health care liabilities and related tax subsidies are already reflected in 3M’s financial statements, the

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change in law resulted in a reduction of the value of the company’s deferred tax asset related to the subsidy. This reduction in value resulted in a one-time non-cash income tax charge to 3M’s earnings in 2010 of approximately $84 million, or 12 cents per diluted share.

The Company files income tax returns in the U.S. federal jurisdiction, and various states and foreign jurisdictions. With few exceptions, the Company is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2004.

The IRS completed its field examination of the Company’s U.S. federal income tax returns for the years 2005 through 2007 in the fourth quarter of 2009. The Company protested certain IRS positions within these tax years and entered into the administrative appeals process with the IRS during the first quarter of 2010. During the first quarter of 2010, the IRS completed its field examination of the Company’s U.S. federal income tax return for the 2008 year. The Company protested certain IRS positions for 2008 and entered into the administrative appeals process with the IRS during the second quarter of 2010. During the first quarter of 2011, the IRS completed its field examination of the Company’s U.S. federal income tax return for the 2009 year. The Company protested certain IRS positions for 2009 and entered into the administrative appeals process with the IRS during the second quarter of 2011. During the first quarter of 2012, the IRS completed its field examination of the Company’s U.S. federal income tax return for the 2010 year. The Company protested certain IRS positions for 2010 and entered into the administrative appeals process with the IRS during the second quarter of 2012. In December 2012, the Company received a statutory notice of deficiency for the 2006 year. The Company intends to file a petition in Tax Court in the first quarter of 2013.

Currently, the Company is under examination by the IRS for its U.S. federal income tax returns for the years 2011, 2012, and 2013. It is anticipated that the IRS will complete its examination of the Company for 2011 by the end of the second quarter of 2013, for 2012 by the end of the first quarter of 2014, and for 2013 by the end of the first quarter of 2015. As of December 31, 2012, the IRS has not proposed any significant adjustments to the Company’s tax positions for which the Company is not adequately reserved.

During the first quarter of 2010, the Company paid the agreed upon assessments for the 2005 tax year. During the second quarter of 2010, the Company paid the agreed upon assessments for the 2008 tax year. During the second quarter of 2011, the Company received a refund from the IRS for the 2004 tax year. During the first quarter of 2012, the Company paid the agreed upon assessments for the 2010 tax year. Payments relating to other proposed assessments arising from the 2005 through 2013 examinations may not be made until a final agreement is reached between the Company and the IRS on such assessments or upon a final resolution resulting from the administrative appeals process or judicial action. In addition to the U.S. federal examination, there is also limited audit activity in several U.S. state and foreign jurisdictions.

3M anticipates changes to the Company’s uncertain tax positions due to the closing of various audit years mentioned above. Currently, the Company is not able to reasonably estimate the amount by which the liability for unrecognized tax benefits will increase or decrease during the next 12 months as a result of the ongoing income tax authority examinations.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (UTB) is as follows:

Federal, State and Foreign Tax

(Millions)	2012			2011			2010
Gross UTB Balance at January 1	$	594		$	622		$	618
Additions based on tax positions related to the current year	80			92			128
Additions for tax positions of prior years	114			69			142
Reductions for tax positions of prior years	(120		)	(123		)	(161		)
Settlements	(50		)	9			(51		)
Reductions due to lapse of applicable statute of limitations	(90		)	(75		)	(54		)
Gross UTB Balance at December 31	$	528		$	594		$	622
Net UTB impacting the effective tax rate at December 31	$	185		$	295		$	394

The total amount of UTB, if recognized, would affect the effective tax rate by $185 million as of December 31, 2012, $295 million as of December 31, 2011, and $394 million as of December 31, 2010. The ending net UTB results from adjusting the gross balance for items such as Federal, State, and non-U.S. deferred items, interest and penalties, and deductible

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taxes. The net UTB is included as components of Other Current Assets, Other Assets, Accrued Income Taxes, and Other Liabilities within the Consolidated Balance Sheet.

The Company recognizes interest and penalties accrued related to unrecognized tax benefits in tax expense. The Company recognized in the consolidated statement of income on a gross basis approximately $12 million, $1 million, and $9 million of benefit in 2012, 2011, and 2010, respectively. At December 31, 2012 and December 31, 2011, accrued interest and penalties in the consolidated balance sheet on a gross basis were $44 million and $56 million, respectively. Included in these interest and penalty amounts are interest and penalties related to tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. Because of the impact of deferred tax accounting, other than interest and penalties, the disallowance of the shorter deductibility period would not affect the annual effective tax rate but would accelerate the payment of cash to the taxing authority to an earlier period.

As a result of certain employment commitments and capital investments made by 3M, income from manufacturing activities in China, Taiwan, Korea, Brazil, and Singapore is subject to reduced tax rates or, in some cases, is exempt from tax for years through 2013, 2016, 2018, 2023, and 2023, respectively. The income tax benefits attributable to the tax status of these subsidiaries are estimated to be $64 million (9 cents per diluted share) in 2012, $77 million (11 cents per diluted share) in 2011, and $69 million (10 cents per diluted share) in 2010.

The Company has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. These earnings relate to ongoing operations and were approximately $8.6 billion as of December 31, 2012. Because of the availability of U.S. foreign tax credits, it is not practicable to determine the income tax liability that would be payable if such earnings were not indefinitely reinvested.

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NOTE 8.  Marketable Securities

The Company invests in agency securities, corporate securities, asset-backed securities, treasury securities and other securities. The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).

	December 31,		December 31,
(Millions)	2012		2011
U.S. government agency securities	$	162	$	119
Foreign government agency securities	16		8
Corporate debt securities	471		413
Commercial paper	116		30
Certificates of deposit/time deposits	41		49
U.S. treasury securities	54		―
U.S. municipal securities	13		9
Asset-backed securities:
Automobile loan related	567		530
Credit card related	123		244
Equipment lease related	54		54
Other	31		5
Asset-backed securities total	775		833
Current marketable securities	$	1,648	$	1,461
U.S. government agency securities	$	125	$	361
Foreign government agency securities	51		15
Corporate debt securities	494		255
U.S. treasury securities	18		34
U.S. municipal securities	14		5
Auction rate securities	7		4
Asset-backed securities:
Automobile loan related	375		188
Credit card related	34		24
Equipment lease related	36		10
Other	8		―
Asset-backed securities total	453		222
Non-current marketable securities	$	1,162	$	896
Total marketable securities	$	2,810	$	2,357

Classification of marketable securities as current or non-current is dependent upon management’s intended holding period, the security’s maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. At December 31, 2012, gross unrealized losses totaled approximately $6 million (pre-tax), while gross unrealized gains totaled approximately $3 million (pre-tax). At December 31, 2011, gross unrealized losses totaled approximately $12 million (pre-tax), while gross unrealized gains totaled approximately $3 million (pre-tax). Refer to Note 5 for a table that provides the net realized gains (losses) related to sales or impairments of debt and equity securities, which includes marketable securities. Cost of securities sold use the first in, first out (FIFO) method. Since these marketable securities are classified as available-for-sale securities, changes in fair value will flow through other comprehensive income, with amounts reclassified out of other comprehensive income into earnings upon sale or “other-than-temporary” impairment.

3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders’ equity. Such an unrealized loss does not reduce net income attributable to 3M for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.

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The balance at December 31, 2012 for marketable securities by contractual maturity are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

(Millions)	December 31, 2012
Due in one year or less	$	912
Due after one year through three years	1,483
Due after three years through five years	414
Due after five years	1
Total marketable securities	$	2,810

3M has a diversified marketable securities portfolio of $2.810 billion as of December 31, 2012. Within this portfolio, current and long-term asset-backed securities (estimated fair value of $1.228 billion) are primarily comprised of interests in automobile loans and credit cards. At December 31, 2012, all asset-backed securities were rated AAA or A-1+ by Standard & Poor’s and/or Aaa or P-1 by Moody’s Investors Service and/or AAA or F1+ by Fitch Ratings.

3M’s marketable securities portfolio includes auction rate securities that represent interests in investment grade credit default swaps; however, currently these holdings comprise less than one percent of this portfolio. The estimated fair value of auction rate securities are $7 million and $4 million as of December 31, 2012 and 2011, respectively. Gross unrealized losses within accumulated other comprehensive income related to auction rate securities totaled $6 million (pre-tax) and $9 million (pre-tax) as of December 31, 2012 and 2011, respectively. As of December 31, 2012, auction rate securities associated with these balances have been in a loss position for more than 12 months. Since the second half of 2007, these auction rate securities failed to auction due to sell orders exceeding buy orders. Liquidity for these auction-rate securities is typically provided by an auction process that resets the applicable interest rate at pre-determined intervals, usually every 7, 28, 35, or 90 days. The funds associated with failed auctions will not be accessible until a successful auction occurs or a buyer is found outside of the auction process. Refer to Note 12 for a table that reconciles the beginning and ending balances of auction rate securities.

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NOTE 9.  Long-Term Debt and Short-Term Borrowings

The following debt tables reflect interest rates, including the effects of interest rate swaps, as of December 31, 2012. Long-term debt and short-term borrowings as of December 31 consisted of the following:

Long-Term Debt

	Currency/	Effective		Final
(Millions)	Fixed vs.	Interest		Maturity
Description / 2012 Principal Amount	Floating	Rate		Date	2012		2011
Eurobond (775 million Euros)	Euro Fixed	4.30	%	2014	$	1,034	$	1,017
Medium-term note ($1 billion)	USD Fixed	1.62	%	2016	994		992
Medium-term note ($850 million)	USD Fixed	4.42	%	2013	850		849
30-year bond ($750 million)	USD Fixed	5.73	%	2037	747		747
Medium-term note ($650 million)	USD Fixed	1.10	%	2017	647		—
Medium-term note ($600 million)	USD Fixed	2.17	%	2022	592		—
Medium-term note	USD Fixed	—	%	—	—		500
Eurobond (250 million Euros)	Euro Floating	0.88	%	2014	349		347
30-year debenture ($330 million)	USD Fixed	6.01	%	2028	347		348
UK borrowing (66 million GBP)	GBP Floating	1.34	%	2015	106		—
Floating rate note ($97 million)	USD Floating	0.00	%	2041	97		97
Floating rate note ($59 million)	USD Floating	0.00	%	2044	59		59
Other borrowings	Various	0.36	%	2013-2040	80		91
Total long-term debt					$	5,902	$	5,047
Less: current portion of long-term debt					986		563
Long-term debt (excluding current portion)					$	4,916	$	4,484

Short-Term Borrowings and Current Portion of Long-Term Debt

	Effective
(Millions)	Interest Rate		2012		2011
Current portion of long-term debt	3.83	%	$	986	$	563
U.S. dollar commercial paper	—	%	—		—
Other borrowings	4.70	%	99		119
Total short-term borrowings and current portion of long-term debt			$	1,085	$	682

The following weighted-average effective interest rate table reflects the combined effects of interest rate and currency swaps at December 31, 2012 and 2011.

Weighted-Average Effective Interest Rate

	Total
At December 31	2012		2011
Short-term	3.91	%	4.32	%
Long-term	3.16	%	3.76	%

Maturities of long-term debt for the five years subsequent to December 31, 2012 are as follows (in millions):

										After
2013		2014		2015		2016		2017		2017		Total
$	986	$	1,481	$	107	$	994	$	648	$	1,686	$	5,902

Long-term debt payments due in 2013 and 2014 include floating rate notes totaling $132 million (classified as current portion of long-term debt) and $97 million, respectively, as a result of put provisions associated with these debt instruments.

The floating rate notes contain put provisions granting the holders the option to require 3M to repurchase the securities on certain dates. Under the terms of the floating rate notes due in 2044, holders have an annual put feature. 3M would be required to repurchase these securities at a discount to par ranging from 98 percent to 99 percent up until 2013, and at 100 percent of par value from 2014 and every anniversary thereafter until final maturity. Under the terms of the floating

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rate notes due in 2027, 2040, and 2041, holders have put options that commence ten years after the date of issuance and each third anniversary thereafter until final maturity. 3M would be required to repurchase these securities at various prices, ranging from 99 percent to 100 percent of par value according to the redemption schedules for each security. In 2011, 2010, 2009 and 2008, 3M was required to repurchase an immaterial amount of principal on the aforementioned floating rate notes.

The Company has a “well-known seasoned issuer” shelf registration statement, effective August 5, 2011, which registers an indeterminate amount of debt or equity securities for future sales. In September 2011, in connection with this August 5, 2011 shelf registration statement, 3M established a $3 billion medium-term notes program (Series F), from which 3M issued $1 billion aggregate principal amount of five-year fixed rate medium-term notes with a coupon rate of 1.375%. In June 2012, 3M issued $650 million aggregate principal amount of five-year fixed rate medium-notes due 2017 with a coupon rate of 1.000% and $600 million aggregate principal amount of ten-year fixed rate medium-term notes due 2022 with a coupon rate of 2.000%, which were both issued from this $3 billion medium-term notes program (Series F). The designated use of these proceeds is for general corporate purposes.

In connection with a prior “well-known seasoned issuer” shelf registration, in June 2007 the Company established a $3 billion medium-term notes program. Three debt securities were issued under this medium-term notes program. First, in December 2007, 3M issued a five-year, $500 million, fixed rate note with a coupon rate of 4.65%, which matured in December 2012. Second, in August 2008, 3M issued a five-year, $850 million, fixed rate note with a coupon rate of 4.375%. Third, in October 2008, the Company issued a three-year $800 million, fixed rate note with a coupon rate of 4.50%. The Company entered into interest rate swaps to convert this $800 million note to a floating rate. This three-year fixed rate note and related interest rate swaps matured in the fourth quarter of 2011.

The Company also issued notes under a $1.5 billion medium-term note program established in December 2003. In March 2007, the Company issued a 30-year, $750 million, fixed rate note with a coupon rate of 5.70%. In November 2006, 3M issued a three-year, $400 million, fixed rate note. The Company entered into an interest rate swap to convert this to a rate based on a floating LIBOR index. Both the note and related swap matured in November 2009. In December 2004, 3M issued a 40-year, $60 million floating rate note, with the rate based on a floating LIBOR index. This $1.5 billion medium term note program was replaced by the $3 billion program established in June 2007.

In July 2007, 3M issued a seven-year 5.0% fixed rate Eurobond for an amount of 750 million Euros (book value of approximately $1.017 billion in U.S. Dollars at December 31, 2012). In addition, in December 2007, 3M reopened its existing seven year 5.0% fixed rate Eurobond for an additional amount of 275 million Euros (book value of approximately $366 million in U.S. Dollars at December 31, 2012). This security was issued at a premium and was subsequently consolidated with the original security in January 2008. Upon the initial debt issuance in July 2007, 3M completed a fixed-to-floating interest rate swap on a notional amount of 400 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation. In August 2010, the Company terminated 150 million Euros of the notional amount of this swap. As a result, the notional amount remaining after the partial termination is 250 million Euros. The termination of a portion of this swap did not impact the terms of the remaining portion. After these swaps, the fixed rate portion of the Eurobond totaled 775 million Euros and the floating rate portion totaled 250 million Euros.

The Company has an AA- credit rating, with a stable outlook, from Standard & Poor’s and an Aa2 credit rating, with a stable outlook, from Moody’s Investors Service. In September 2012, 3M entered into a $1.5 billion, five-year multi-currency revolving credit agreement, which amended the existing agreement that was entered into in August 2011. This amended agreement extended the expiration date from August 2016 to September 2017. This credit agreement includes a provision under which 3M may request an increase of up to $500 million, bringing the total facility up to $2 billion (at the lenders’ discretion). This facility was undrawn at December 31, 2012. In August 2012, 3M entered into a $150 million, one-year committed letter of credit facility with HSBC Bank USA, which replaced the one-year $200 million committed credit facility that was entered into in August 2011. As of December 31, 2012, 3M letters of credit issued under this $150 million committed facility totaled $121 million. In December 2012, 3M entered into a three-year 66 million British Pound (approximately $106 million) committed credit facility agreement with JP Morgan Chase Bank, which is fully drawn as of December 31, 2012. Apart from the committed facilities, an additional $100 million in stand-alone letters of credit are also issued and outstanding at December 31, 2012. The Company also utilized $37 million in international lines of credit and $6 million in U.S. lines of credit with other banking partners as of December 31, 2012. These letters of credit are utilized in connection with normal business activities. Under both the $1.5 billion and $150 million credit agreements, the Company is required to maintain its EBITDA to Interest Ratio as of the end of each fiscal quarter at not less than 3.0 to 1. This is calculated (as defined in the agreement) as the ratio of consolidated total EBITDA for the four consecutive quarters then ended to total interest expense on all funded debt for the same period. At December 31, 2012, this ratio was approximately 45 to 1. Debt covenants do not restrict the payment of dividends.

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NOTE 10.  Pension and Postretirement Benefit Plans

3M has company-sponsored retirement plans covering substantially all U.S. employees and many employees outside the United States. In total, 3M has over 70 plans in 25 countries. Pension benefits associated with these plans generally are based on each participant’s years of service, compensation, and age at retirement or termination. The U.S. defined-benefit pension plan was closed to new participants effective January 1, 2009. The Company also provides certain postretirement health care and life insurance benefits for substantially all of its U.S. employees who reach retirement age while employed by the Company. Most international employees and retirees are covered by government health care programs. The cost of company-provided postretirement health care plans for international employees is not material and is combined with U.S. amounts in the tables that follow.

The Company also sponsors employee savings plans under Section 401(k) of the Internal Revenue Code. These plans are offered to substantially all regular U.S. employees. Effective January 1, 2010, substantially all Company contributions to the plans are made in cash. During 2008 the Board of Directors approved various changes to the employee savings plans. For substantially all employees hired prior to January 1, 2009, employee 401(k) contributions of up to 6% of eligible compensation are matched at rates of 60% or 75%, depending on the plan the employee participated in. Employees hired on or after January 1, 2009 receive a cash match of 100% for employee 401(k) contributions of up to 6% of eligible compensation and also receive an employer retirement income account cash contribution of 3% of the participant’s total eligible compensation. All contributions are invested in a number of investment funds pursuant to their elections. U.S. expenses related to employer contributions to these plans were $124 million, and $109 million and $97 million for 2012, 2011 and 2010, respectively. Various international countries also participate in defined contribution plans. International expenses related to employer contributions to these plans were $58 million, $54 million and $36 million for 2012, 2011 and 2010, respectively.

The Company’s defined benefit pension funding policy is to deposit with independent trustees amounts allowable by law. Trust funds and deposits with insurance companies are maintained to provide pension benefits to plan participants and their beneficiaries. There are no plan assets in the non-qualified plan due to its nature. For its U.S. postretirement health care and life insurance benefit plans, the Company has set aside amounts at least equal to annual benefit payments with an independent trustee.

In August 2006, the Pension Protection Act (PPA) was signed into law in the U.S. The PPA transition rules increased the funding target for defined benefit pension plans to 100% of the target liability by 2011. 3M’s U.S. qualified defined benefit plan does not have a mandatory cash contribution because the Company has a significant credit balance from previous discretionary contributions that can be applied to any PPA funding requirements.

In the fourth quarter of 2010, the Company made further changes to its U.S. postretirement benefit plans. As a result of these changes, the Company will transition all current and future retirees to the savings account benefits-based plan announced in 2008. These changes become effective beginning January 1, 2013, for all Medicare eligible retirees and their Medicare eligible dependents and January 1, 2015, for all non-Medicare eligible retirees and their eligible dependents.

In the second quarter of 2010, 3M’s Brazilian subsidiary received approval from the government in Brazil to freeze its defined benefit pension plan. Effective March 31, 2010, participants in this subsidiary’s pension plan no longer accrue additional pension benefits. As a result, the Company recorded a $22 million curtailment gain in the second quarter of 2010.

In December 2011, the Company began offering a voluntary early retirement incentive program to certain eligible participants of its U.S. pension plans who meet age and years of pension service requirements. The eligible participants who accepted the offer and retired on February 1, 2012 received an enhanced pension benefit. Pension benefits were enhanced by adding one additional year of pension service and one additional year of age for certain benefit calculations. 616 participants accepted the offer and retired on February 1, 2012. As a result, the Company incurred a $26 million charge related to these special termination benefits in the first quarter of 2012.

Effective July 1, 2012, 3M Canada closed its pension plans for salaried employees to new participants. The change did not trigger a plan remeasurement and therefore there is no immediate impact to the liability and expense.

3M was informed during the first quarter of 2009 that the general partners of WG Trading Company, in which 3M’s benefit plans hold limited partnership interests, are the subject of a criminal investigation as well as civil proceedings by the SEC and CFTC (Commodity Futures Trading Commission). In March 2011, over the objections of 3M and six other limited partners of WG Trading Company, the district court judge ruled in favor of the court appointed receiver’s proposed

74

distribution plan. In April 2011, the 3M benefit plans received their share under the court-ordered distribution plan. 3M and six other limited partners of WG Trading Company have appealed the court’s order to the United States Court of Appeals for the Second Circuit. The benefit plan trustee holdings of WG Trading Company interests were adjusted to reflect the decreased estimated fair market value, inclusive of estimated insurance proceeds, as of the annual measurement dates. The Company has insurance that it believes, based on what is currently known, will result in the recovery of a portion of the decrease in original asset value. As of the 2012 measurement date these holdings represented less than one percent of 3M’s fair value of total plan assets. 3M currently believes that the resolution of these events will not have a material adverse effect on the consolidated financial position of the Company.

The following tables include a reconciliation of the beginning and ending balances of the benefit obligation and the fair value of plan assets as well as a summary of the related amounts recognized in the Company’s consolidated balance sheet as of December 31 of the respective years. 3M also has certain non-qualified unfunded pension and postretirement benefit plans, inclusive of plans related to supplement/excess benefits for employees impacted by particular relocations and other matters, that individually and in the aggregate are not significant and which are not included in the tables that follow. The obligations for these plans are included within other liabilities in the Company’s consolidated balance sheet and aggregated less than $40 million as of both December 31, 2012 and 2011.

	Qualified and Non-qualified
	Pension Benefits												Postretirement
	United States						International						Benefits
(Millions)	2012			2011			2012			2011			2012			2011
Change in benefit obligation
Benefit obligation at beginning of year	$	14,499		$	12,319		$	5,332		$	4,912		$	2,108		$	1,828
Acquisitions	11			—			26			48			—			—
Service cost	254			206			124			124			78			61
Interest cost	587			626			247			261			86			92
Participant contributions	—			—			5			5			52			56
Foreign exchange rate changes	—			—			83			(84		)	(2		)	(9		)
Plan amendments	—			8			(7		)	(31		)	—			—
Actuarial (gain) loss	179			2,022			882			318			31			228
Medicare Part D Reimbursement	—			—			—			—			8			7
Benefit payments	(726		)	(680		)	(278		)	(221		)	(156		)	(155		)
Settlements, curtailments, special termination benefits and other	26			(2		)	—			—			—			—
Benefit obligation at end of year	$	14,830		$	14,499		$	6,414		$	5,332		$	2,205		$	2,108
Change in plan assets
Fair value of plan assets at beginning of year	$	12,102		$	11,575		$	4,643		$	4,355		$	1,209		$	1,149
Acquisitions	8			—			—			26			—			—
Actual return on plan assets	1,645			972			463			272			149			94
Company contributions	752			237			327			280			67			65
Participant contributions	—			—			5			5			52			56
Foreign exchange rate changes	—			—			62			(74		)	—			—
Benefit payments	(726		)	(680		)	(278		)	(221		)	(156		)	(155		)
Settlements, curtailments, special termination benefits and other	—			(2		)	—			—			—			—
Fair value of plan assets at end of year	$	13,781		$	12,102		$	5,222		$	4,643		$	1,321		$	1,209
Funded status at end of year	$	(1,049	)	$	(2,397	)	$	(1,192	)	$	(689	)	$	(884	)	$	(899	)

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	Qualified and Non-qualified
	Pension Benefits												Postretirement
	United States						International						Benefits
(Millions)	2012			2011			2012			2011			2012			2011
Amounts recognized in the Consolidated Balance Sheet as of Dec. 31,
Non-current assets	$	—		$	—		$	16		$	40		$	—		$	—
Accrued benefit cost
Current liabilities	(43		)	(41		)	(8		)	(8		)	(4		)	(4		)
Non-current liabilities	(1,006		)	(2,356		)	(1,200		)	(721		)	(880		)	(895		)
Ending balance	$	(1,049	)	$	(2,397	)	$	(1,192	)	$	(689	)	$	(884	)	$	(899	)
Amounts recognized in accumulated other comprehensive income as of Dec. 31,
Net transition obligation (asset)	$	—		$	—		$	(5	)	$	(8	)	$	—		$	—
Net actuarial loss (gain)	4,679			5,623			2,458			1,858			1,028			1,171
Prior service cost (credit)	24			30			(150		)	(167		)	(197		)	(269		)
Ending balance	$	4,703		$	5,653		$	2,303		$	1,683		$	831		$	902

The balance of amounts recognized for international plans in accumulated other comprehensive income as of December 31 in the preceding table are presented based on the foreign currency exchange rate on that date.

The pension accumulated benefit obligation represents the actuarial present value of benefits based on employee service and compensation as of the measurement date and does not include an assumption about future compensation levels. The accumulated benefit obligation of the U.S. pension plans was $14.127 billion and $13.804 billion at December 31, 2012 and 2011, respectively. The accumulated benefit obligation of the international pension plans was $5.942 billion and $4.889 billion at December 31, 2012 and 2011, respectively.

The following amounts relate to pension plans with accumulated benefit obligations in excess of plan assets as of December 31:

	Qualified and Non-qualified Pension Plans
	United States				International
(Millions)	2012		2011		2012		2011
Projected benefit obligation	$	505	$	14,499	$	5,122	$	2,983
Accumulated benefit obligation	492		13,804		4,808		2,740
Fair value of plan assets	8		12,102		4,038		2,321

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Net periodic benefit cost is recorded in cost of sales, selling, general and administrative expenses, and research, development and related expenses. Components of net periodic benefit cost and other supplemental information for the years ended December 31 follow:

Components of net periodic cost and other amounts recognized in other comprehensive income

	Qualified and Non-qualified
	Pension Benefits																		Postretirement
	United States									International									Benefits
(Millions)	2012			2011			2010			2012			2011			2010			2012			2011			2010
Net periodic benefit cost (benefit)
Service cost	$	254		$	206		$	201		$	124		$	124		$	105		$	78		$	61		$	55
Interest cost	587			626			638			247			261			241			86			92			88
Expected return on plan assets	(992		)	(927		)	(929		)	(295		)	(289		)	(278		)	(84		)	(77		)	(83		)
Amortization of transition (asset) obligation	—			—			—			(1		)	(2		)	1			—			—			—
Amortization of prior service cost (benefit)	5			11			13			(17		)	(14		)	(4		)	(72		)	(72		)	(94		)
Amortization of net actuarial (gain) loss	470			334			221			122			116			84			108			102			85
Net periodic benefit cost (benefit)	$	324		$	250		$	144		$	180		$	196		$	149		$	116		$	106		$	51
Settlements, curtailments, special termination benefits and other	26			1			—			4			2			(22		)	—			—			—
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	$	350		$	251		$	144		$	184		$	198		$	127		$	116		$	106		$	51
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) Loss
Transition (asset) obligation	$	—		$	—		$	—		$	—		$	(2	)	$	(1	)	$	—		$	—		$	—
Amortization of transition (asset) Obligation	—			—			—			1			2			(1		)	—			—			—
Prior service cost (benefit)	—			8			—			(7		)	(32		)	(91		)	—			—			69
Amortization of prior service cost (benefit)	(5		)	(11		)	(13		)	17			14			4			72			72			94
Net actuarial (gain) loss	(470		)	1,976			227			707			315			104			(33		)	212			89
Amortization of net actuarial (gain) loss	(470		)	(334		)	(221		)	(122		)	(116		)	(84		)	(108		)	(102		)	(85		)
Foreign currency	—			—			—			24			(17		)	(19		)	(1		)	(2		)	(1		)
Total recognized in other comprehensive (income) loss	$	(945	)	$	1,639		$	(7	)	$	620		$	164		$	(88	)	$	(70	)	$	180		$	166
Total recognized in net periodic benefit cost (benefit) and other comprehensive (income) loss	$	(595	)	$	1,890		$	137		$	804		$	362		$	39		$	46		$	286		$	217

The estimated amortization from accumulated other comprehensive income into net periodic benefit cost in 2012 follows:

Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over the next fiscal year

	Qualified and Non-qualified  Pension Benefits					Postretirement
(Millions)	United States		International			Benefits
Amortization of transition (asset) obligation	$	—	$	(1	)	$	—
Amortization of prior service cost (benefit)	5		(17		)	(66		)
Amortization of net actuarial (gain) loss	399		159			96
Total amortization expected over the next fiscal year	$	404	$	141		$	30

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Other supplemental information for the years ended December 31 follows:

Weighted-average assumptions used to determine benefit obligations

	Qualified and Non-qualified Pension Benefits												Postretirement
	United States						International						Benefits
	2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate	4.14	%	4.15	%	5.23	%	3.78	%	4.58	%	5.04	%	4.00	%	4.04	%	5.09	%
Compensation rate increase	4.00	%	4.00	%	4.00	%	3.31	%	3.52	%	3.59	%	N/A		N/A		N/A

The Company is in the process of transitioning all current and future retirees to the savings account benefits-based plan announced in 2008. The contributions provided by the Company to the health savings accounts increase three percent per year. Therefore, the Company no longer has material exposure to health care cost inflation.

Weighted-average assumptions used to determine net cost for years ended

	Qualified and Non-qualified Pension Benefits												Postretirement
	United States						International						Benefits
	2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate	4.15	%	5.23	%	5.77	%	4.58	%	5.04	%	5.30	%	4.04	%	5.09	%	5.62	%
Expected return on assets	8.25	%	8.50	%	8.50	%	6.38	%	6.58	%	6.90	%	7.30	%	7.38	%	7.30	%
Compensation rate increase	4.00	%	4.00	%	4.30	%	3.52	%	3.59	%	3.72	%	N/A		N/A		N/A

The Company determines the discount rate used to measure plan liabilities as of the December 31 measurement date for the pension and postretirement benefit plans, which is also the date used for the related annual measurement assumptions. The discount rate reflects the current rate at which the associated liabilities could be effectively settled at the end of the year. The Company sets its rate to reflect the yield of a portfolio of high quality, fixed-income debt instruments that would produce cash flows sufficient in timing and amount to settle projected future benefits. Using this methodology, the Company determined a discount rate of 4.14% for pension and 4.00% for postretirement benefits to be appropriate for its U.S. plans as of December 31, 2012, which is a decrease of 0.01 percentage points and 0.04 percentage points, respectively, from the rates used as of December 31, 2011. For the international pension and postretirement plans the discount rates also reflect the current rate at which the associated liabilities could be effectively settled at the end of the year. If the country has a deep market in corporate bonds the Company matches the expected cash flows from the plan either to a portfolio of bonds that generate sufficient cash flow or a notional yield curve generated from available bond information. In countries that do not have a deep market in corporate bonds, government bonds are considered with a risk premium to approximate corporate bond yields.

For the U.S. qualified pension plans, the Company’s assumption for the expected return on plan assets was 8.25% in 2012. The Company is lowering the 2013 expected return on plan assets for its U.S. pension plan by 0.25 percentage points to 8.00%. This will increase the 2013 expected pension expense by approximately $33 million. Projected returns are based primarily on broad, publicly traded equity and fixed-income indices and forward-looking estimates of active portfolio and investment management. As of December 31, 2012, the Company’s 2013 expected long-term rate of return on U.S. plan assets is based on an asset allocation assumption of 30% global equities, with an expected long-term rate of return of 7.58%; 16% private equities, with an expected long-term rate of return of 12.58%; 33% fixed-income securities, with an expected long-term rate of return of 3.72%; 16% absolute return investments independent of traditional performance benchmarks, with an expected long term return of 6.43%; and 5% commodities, with an expected long-term rate of return of 6.08%. The Company expects additional positive return from active investment management. These assumptions result in an 8.00% expected rate of return on an annualized basis in 2013. The actual rate of return on plan assets in 2012 was 13.6%. In 2011 the plan earned a rate of return of 8.7% and in 2010 earned a return of 14.4%. The average annual actual return on the plan assets over the past 10 and 25 years has been 10.5% and 10.6%, respectively. Return on assets assumptions for international pension and other post-retirement benefit plans are calculated on a plan-by-plan basis using plan asset allocations and expected long-term rate of return assumptions.

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During 2012, the Company contributed $1.079 billion to its U.S. and international pension plans and $67 million to its postretirement plans. During 2011, the Company contributed $517 million to its U.S. and international pension plans and $65 million to its postretirement plans. In 2013, the Company expects to contribute an amount in the range of $400 million to $600 million of cash to its U.S. and international retirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2013. Therefore, the amount of the anticipated discretionary contribution could vary significantly depending on the U.S. plans’ funded status and the anticipated tax deductibility of the contribution. Future contributions will also depend on market conditions, interest rates and other factors.

Future Pension and Postretirement Benefit Payments

The following table provides the estimated pension and postretirement benefit payments that are payable from the plans to participants.

	Qualified and Non-qualified
	Pension Benefits				Postretirement
(Millions)	United States		International		Benefits
2013 Benefit Payments	$	760	$	211	$	113
2014 Benefit Payments	784		223		126
2015 Benefit Payments	808		236		138
2016 Benefit Payments	831		248		153
2017 Benefit Payments	854		256		154
Following five years	4,566		1,463		787

Plan Asset Management

3M’s investment strategy for its pension and postretirement plans is to manage the funds on a going-concern basis. The primary goal of the funds is to meet the obligations as required. The secondary goal is to earn the highest rate of return possible, without jeopardizing its primary goal, and without subjecting the Company to an undue amount of contribution rate volatility. Fund returns are used to help finance present and future obligations to the extent possible within actuarially determined funding limits and tax-determined asset limits, thus reducing the level of contributions 3M must make. The investment strategy has used long duration cash and derivative instruments to offset a significant portion of the interest rate sensitivity of U.S. pension liabilities. In addition, credit risk is managed through mandates for public securities and maximum issuer limits that are established and monitored on a regular basis.

Normally, 3M does not buy or sell any of its own stock as a direct investment for its pension and other postretirement benefit funds. However, due to external investment management of the funds, the plans may indirectly buy, sell or hold 3M stock. The aggregate amount of the shares would not be considered to be material relative to the aggregate fund percentages.

The discussion that follows references the fair value measurements of certain assets in terms of levels 1, 2 and 3. See Note 12 for descriptions of these levels. While the company believes the valuation methods 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 estimate of fair value at the reporting date.

U.S. Pension Plans Assets

In order to achieve the investment objectives in the U.S. pension plans, the investment policy includes a target strategic asset allocation. The investment policy allows some tolerance around the target in recognition that market fluctuations and illiquidity of some investments may cause the allocation to a specific asset class to stray from the target allocation, potentially for long periods of time. Acceptable ranges have been designed to allow for deviation from long-term targets and to allow for the opportunity for tactical over- and under-weights. The portfolio will normally be rebalanced when the quarter-end asset allocation deviates from acceptable ranges. The allocation is reviewed regularly by the named fiduciary of the plans.

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The fair values of the assets held by the U.S. pension plans by asset class are as follows:

	Fair Value Measurements Using Inputs Considered as														Fair Value at
(Millions)	Level 1				Level 2					Level 3					Dec. 31,
Asset Class	2012		2011		2012		2011			2012			2011		2012			2011
Equities
U.S. equities	$	1,662	$	1,186	$	11	$	14		$	5		$	5	$	1,678		$	1,205
Non-U.S. equities	1,332		1,095		—		1			—			—		1,332			1,096
Derivatives	—		—		5		(3		)	—			—		5			(3		)
EAFE index funds	—		—		250		476			—			—		250			476
Index funds	—		—		156		128			1			1		157			129
Long/short equity	—		—		—		—			477			436		477			436
Total Equities	$	2,994	$	2,281	$	422	$	616		$	483		$	442	$	3,899		$	3,339
Fixed Income
U.S. government securities	$	844	$	776	$	796	$	869		$	—		$	—	$	1,640		$	1,645
Non-U.S. government securities	—		—		378		314			—			—		378			314
Preferred and convertible securities	4		4		—		5			—			—		4			9
U.S. corporate bonds	196		168		1,249		1,049			—			5		1,445			1,222
Non-U.S. corporate bonds	—		—		286		244			—			—		286			244
Asset-backed securities	—		—		21		23			—			—		21			23
Collateralized mortgage obligations	—		—		43		137			—			—		43			137
Private placements	—		—		164		125			2			69		166			194
Derivative instruments	—		2		76		200			—			—		76			202
Other	—		—		29		24			—			—		29			24
Total Fixed Income	$	1,044	$	950	$	3,042	$	2,990		$	2		$	74	$	4,088		$	4,014
Private Equity
Buyouts	$	—	$	—	$	—	$	—		$	662		$	618	$	662		$	618
Derivative instruments	—		—		—		—			(51		)	—		(51		)	—
Direct investments	—		—		—		—			129			—		129			—
Distressed debt	—		—		—		—			301			333		301			333
Growth equity	7		1		—		—			84			27		91			28
Mezzanine	—		—		—		—			82			90		82			90
Real estate	—		—		—		—			136			148		136			148
Secondary	—		—		—		—			166			181		166			181
Venture capital	—		—		—		—			627			665		627			665
Total Private Equity	$	7	$	1	$	—	$	—		$	2,136		$	2,062	$	2,143		$	2,063
Absolute Return
Hedge funds and hedge fund of funds	$	—	$	—	$	833	$	1,235		$	664		$	88	$	1,497		$	1,323
Bank loan and other fixed income funds	—		—		—		—			201			432		201			432
Total Absolute Return	$	—	$	—	$	833	$	1,235		$	865		$	520	$	1,698		$	1,755
Commodities	$	—	$	—	$	102	$	435		$	107		$	105	$	209		$	540
Cash and Cash Equivalents	$	429	$	295	$	1,547	$	600		$	—		$	—	$	1,976		$	895
Total	$	4,474	$	3,527	$	5,946	$	5,876		$	3,593		$	3,203	$	14,013		$	12,606
Other items to reconcile to fair value of plan assets															$	(232	)	$	(504	)
Fair value of plan assets															$	13,781		$	12,102

Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded. Index funds, including Europe, Australasia, and Far East (EAFE) funds, are valued at the net asset value (NAV) as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities then divided by the number of units outstanding. Long/short equity interests are valued using the most

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recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value.

Fixed income includes derivative instruments such as credit default swaps, interest rate swaps and futures contracts that are used to help manage risks. U.S. government and government agency bonds and notes are valued at the closing price reported in the active market in which the individual security is traded. Corporate bonds and notes, asset backed securities and collateralized mortgage obligations are valued at either the yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks. Private placement funds are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value. Swaps and derivative instruments are valued by the custodian using closing market swap curves and market derived inputs.

The private equity portfolio is a diversified mix of partnership interests including buyouts, derivative instruments, direct investments, distressed debt, growth equity, mezzanine, real estate and venture capital investments. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value.

Absolute return consists primarily of private partnership interests in hedge funds, hedge fund of funds and bank loan funds. Partnership interests are valued using the NAV as determined by the administrator or custodian of the fund. Hedge fund partnership interests, which have a redemption right and are past any lock-up redemption period, are classified as level 2. A hedge fund was restructured during 2012, extending the lock-up redemption period, and therefore was moved to level 3 during 2012.

Commodities consist of commodity-linked notes and commodity-linked derivative contracts designed to deliver investment returns similar to the Goldman Sachs Commodities Index (GSCI) or Dow Jones UBS Commodity index returns. Commodities are valued at closing prices determined by calculation agents for outstanding transactions.

Other items to reconcile to fair value of plan assets include the net of insurance receivables for WG Trading Company, interest receivables, amounts due for securities sold, amounts payable for securities purchased and interest payable.

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The following table sets forth a summary of changes in the fair values of the U.S. pension plans’ level 3 assets for the years ended December 31, 2012 and 2011:

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
(Millions)	Equities			Fixed Income			Private  Equity			Absolute  Return			Commodities			Total
Beginning balance at Jan. 1, 2011	$	506		$	144		$	2,075		$	623		$	111		$	3,459
Net transfers into / (out of) level 3	—			5			—			(59		)	—			(54		)
Purchases, sales, issuances, and settlements, net	(52		)	(97		)	(108		)	3			—			(254		)
Realized gain / (loss)	3			21			(50		)	5			—			(21		)
Change in unrealized gains / (losses) relating to instruments sold during the period	(8		)	(17		)	133			(36		)	—			72
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	(7		)	18			12			(16		)	(6		)	1
Ending balance at Dec. 31, 2011	442			74			2,062			520			105			3,203
Net transfers into / (out of) level 3	—			(5		)	—			472			—			467
Purchases, sales, issuances, and settlements, net	(1		)	(73		)	(108		)	(225		)	—			(407		)
Realized gain / (loss)	—			25			120			76			—			221
Change in unrealized gains / (losses) relating to instruments sold during the period	(1		)	(19		)	(3		)	(49		)	(1		)	(73		)
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	43			—			65			71			3			182
Ending balance at Dec. 31, 2012	$	483		$	2		$	2,136		$	865		$	107		$	3,593

International Pension Plans Assets

Outside the U.S., pension plan assets are typically managed by decentralized fiduciary committees. The disclosure below of asset categories is presented in aggregate for over 65 plans in 24 countries; however, there is significant variation in policy asset allocation from country to country. Local regulations, local funding rules, and local financial and tax considerations are part of the funding and investment allocation process in each country. 3M’s Treasury group provides standard funding and investment guidance to all international plans with more focused guidance to the larger plans.

Each plan has its own strategic asset allocation. The asset allocations are reviewed periodically and rebalanced when necessary.

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The fair values of the assets held by the international pension plans by asset class are as follows:

	Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)	Level 1				Level 2				Level 3				Dec. 31,
Asset Class	2012		2011		2012		2011		2012		2011		2012			2011
Equities
Growth equities	$	628	$	374	$	133	$	141	$	—	$	—	$	761		$	515
Value equities	468		401		23		98		—		—		491			499
Core equities	88		227		376		430		5		5		469			662
Total Equities	$	1,184	$	1,002	$	532	$	669	$	5	$	5	$	1,721		$	1,676
Fixed Income
Domestic government debt	$	297	$	188	$	694	$	579	$	—	$	6	$	991		$	773
Foreign government debt	170		93		445		647		2		2		617			742
Corporate debt securities	—		113		630		404		18		19		648			536
Mortgage backed debt	—		—		31		25		—		—		31			25
Other debt obligations	—		—		268		39		16		12		284			51
Total Fixed Income	$	467	$	394	$	2,068	$	1,694	$	36	$	39	$	2,571		$	2,127
Private Equity
Private equity funds	$	—	$	—	$	—	$	47	$	22	$	20	$	22		$	67
Real estate	3		3		42		38		49		47		94			88
Total Private Equity	$	3	$	3	$	42	$	85	$	71	$	67	$	116		$	155
Absolute Return
Hedge funds	$	—	$	—	$	75	$	172	$	50	$	—	$	125		$	172
Insurance	—		—		—		—		433		369		433			369
Derivatives	—		—		20		58		—		—		20			58
Other	—		—		24		2		2		1		26			3
Total Absolute Return	$	—	$	—	$	119	$	232	$	485	$	370	$	604		$	602
Cash and Cash Equivalents	$	211	$	106	$	21	$	2	$	—	$	—	$	232		$	108
Total	$	1,865	$	1,505	$	2,782	$	2,682	$	597	$	481	$	5,244		$	4,668
Other items to reconcile to fair value of plan assets													$	(22	)	$	(25	)
Fair value of plan assets													$	5,222		$	4,643

Equities consist primarily of mandates in public equity securities managed to the Morgan Stanley Capital All Country World Index. Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded.

Fixed Income investments include domestic and foreign government, corporate, mortgage backed and other debt. Governments, corporate bonds and notes and mortgage backed securities are valued at the closing price reported if traded on an active market or at yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks.

Private equity funds consist of both active and passive mandates. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value. Real estate consists of property funds and REITS (Real Estate Investment Trusts). Property funds are valued using the most recent partnership statement of fair value, updated for any subsequent partnership interests’ cash flows. REITS are valued at the closing price reported in the active market in which it is traded.

Absolute return consists of private partnership interests in hedge funds, insurance contracts, derivative instruments, hedge fund of funds, and bank loan funds. Insurance consists of insurance contracts, which are valued using cash surrender values which is the amount the plan would receive if the contract was cashed out at year end. Derivative instruments consist of interest rate swaps that are used to help manage risks. Hedge funds are valued at the NAV as determined by the independent administrator or custodian of the fund.

Other items to reconcile to fair value of plan assets include the net of interest receivables, amounts due for securities sold, amounts payable for securities purchased and interest payable.

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The following table sets forth a summary of changes in the fair values of the international pension plans’ level 3 assets for the years ended December 31, 2012 and 2011:

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
(Millions)	Equities			Fixed Income			Private  Equity			Absolute  Return			Total
Beginning balance at Jan. 1, 2011	$	98		$	34		$	70		$	344		$	546
Net transfers into / (out of) level 3	(93		)	—			(21		)	18			(96		)
Foreign currency exchange	—			(1		)	(1		)	(10		)	(12		)
Purchases, sales, issuances, and settlements, net	—			—			17			3			20
Realized gain / (loss)	—			—			—			1			1
Change in unrealized gains / (losses) relating to instruments sold during the period	—			—			—			—			—
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	—			6			2			14			22
Ending balance at Dec. 31, 2011	5			39			67			370			481
Net transfers into / (out of) level 3	—			—			—			—			—
Foreign currency exchange	—			2			(4		)	2			—
Purchases, sales, issuances, and settlements, net	—			(2		)	11			92			101
Realized gain / (loss)	—			—			—			—			—
Change in unrealized gains / (losses) relating to instruments sold during the period	—			—			—			—			—
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	—			(3		)	(3		)	21			15
Ending balance at Dec. 31, 2012	$	5		$	36		$	71		$	485		$	597

Postretirement Benefit Plans Assets

In order to achieve the investment objectives in the U.S. postretirement plan, the investment policy includes a target strategic asset allocation. The investment policy allows some tolerance around the target in recognition that market fluctuations and illiquidity of some investments may cause the allocation to a specific asset class to stray from the target allocation, potentially for long periods of time. Acceptable ranges have been designed to allow for deviation from long-term targets and to allow for the opportunity for tactical over- and under-weights. The portfolio will normally be rebalanced when the quarter-end asset allocation deviates from acceptable ranges. The allocation is reviewed regularly by the named fiduciary of the plan.

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The fair values of the assets held by the postretirement benefit plans by asset class are as follows:

	Fair Value Measurements Using Inputs Considered as													Fair Value at
(Millions)	Level 1				Level 2				Level 3					Dec. 31,
Asset Class	2012		2011		2012		2011		2012			2011		2012			2011
Equities
U.S. equities	$	466	$	396	$	—	$	—	$	—		$	—	$	466		$	396
Non-U.S. equities	54		44		—		—		—			—		54			44
EAFE index funds	—		—		8		15		—			—		8			15
Index funds	—		—		42		43		—			—		42			43
Long/short equity	—		—		—		—		16			14		16			14
Total Equities	$	520	$	440	$	50	$	58	$	16		$	14	$	586		$	512
Fixed Income
U.S. government securities	$	63	$	55	$	217	$	197	$	—		$	—	$	280		$	252
Non-U.S. government securities	—		—		16		12		—			—		16			12
U.S. corporate bonds	6		6		68		62		—			—		74			68
Non-U.S. corporate bonds	—		—		16		14		—			—		16			14
Asset-backed securities	—		—		6		5		—			—		6			5
Collateralized mortgage obligations	—		—		4		7		—			—		4			7
Private placements	—		—		11		9		—			2		11			11
Derivative instruments	—		—		2		7		—			—		2			7
Other	—		—		1		1		—			—		1			1
Total Fixed Income	$	69	$	61	$	341	$	314	$	—		$	2	$	410		$	377
Private Equity
Buyouts	$	—	$	—	$	—	$	—	$	51		$	56	$	51		$	56
Derivative instruments	—		—		—		—		(2		)	—		(2		)	—
Direct investments	—		—		—		—		4			—		4			—
Distressed debt	—		—		—		—		11			17		11			17
Growth equity	—		—		—		—		3			1		3			1
Mezzanine	—		—		—		—		3			3		3			3
Real estate	—		—		—		—		4			4		4			4
Secondary	—		—		—		—		5			6		5			6
Venture capital	—		—		—		—		91			100		91			100
Total Private Equity	$	—	$	—	$	—	$	—	$	170		$	187	$	170		$	187
Absolute Return
Hedge funds and hedge fund of funds	$	—	$	—	$	27	$	40	$	21		$	3	$	48		$	43
Bank loan and other fixed income funds	—		—		—		—		7			14		7			14
Total Absolute Return	$	—	$	—	$	27	$	40	$	28		$	17	$	55		$	57
Commodities	$	—	$	—	$	3	$	14	$	4		$	4	$	7		$	18
Cash and Cash Equivalents	$	51	$	10	$	50	$	51	$	—		$	—	$	101		$	61
Total	$	640	$	511	$	471	$	477	$	218		$	224	$	1,329		$	1,212
Other items to reconcile to fair value of plan assets														$	(8	)	$	(3	)
Fair value of plan assets														$	1,321		$	1,209

Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded. Index funds are valued at the NAV as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities then divided by the number of units outstanding. Long/short equity interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value.

Fixed income includes derivative investments such as credit default swaps, interest rate swaps and futures contracts that are used to help manage risks. U.S. government and government agency bonds and notes are valued at the closing price reported in the active market in which the individual security is traded. Corporate bonds and notes, asset backed securities and collateralized mortgage obligations are valued at either the yields currently available on comparable

85

securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks. Swaps and derivative instruments are valued by the custodian using market swap curves and market derived inputs.

The private equity portfolio is a diversified mix of partnership interests including buyouts, derivative instruments, direct investments, distressed debt, growth equity, mezzanine, real estate and venture capital investments. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests’ cash flows or expected changes in fair value.

Absolute return primarily consists of private partnership interests in hedge funds, hedge fund of funds and bank loan funds. Partnership interests are valued using the NAV as determined by the independent administrator or custodian of the fund.

Commodities consist of commodity-linked notes and commodity-linked derivative contracts designed to deliver investment returns similar to the GSCI or Dow Jones UBS Commodity index returns. Commodities are valued at closing prices determined by calculation agents for outstanding transactions.

Other items to reconcile to fair value of plan assets include the net of interest receivables, amounts due for securities sold, foreign currency fluctuations, amounts payable for securities purchased and interest payable.

The following table sets forth a summary of changes in the fair values of the postretirement plans’ level 3 assets for the years ended December 31, 2012 and 2011:

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
(Millions)	Equities			Fixed Income			Private Equity			Absolute Return			Commodities		Total
Beginning balance at Jan. 1, 2011	$	16		$	4		$	226		$	20		$	3	$	269
Net transfers into / (out of) level 3	—			—			—			(2		)	—		(2		)
Purchases, sales, issuances, and settlements, net	(1		)	(3		)	(43		)	1			—		(46		)
Realized gain / (loss)	—			1			(31		)	—			—		(30		)
Change in unrealized gains / (losses) relating to instruments sold during the period	(1		)	(1		)	20			(1		)	—		17
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	—			1			15			(1		)	1		16
Ending balance at Dec. 31, 2011	14			2			187			17			4		224
Net transfers into / (out of) level 3	—			—			—			15			—		15
Purchases, sales, issuances, and settlements, net	—			(2		)	(27		)	(7		)	—		(36		)
Realized gain / (loss)	—			1			11			2			—		14
Change in unrealized gains / (losses) relating to instruments sold during the period	—			(1		)	(4		)	(1		)	—		(6		)
Change in unrealized gains / (losses) relating to instruments still held at the reporting date	2			—			3			2			—		7
Ending balance at Dec. 31, 2012	$	16		$	—		$	170		$	28		$	4	$	218

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NOTE 11.  Derivatives

The Company uses interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts to manage risks generally associated with foreign exchange rate, interest rate and commodity price fluctuations. The information that follows explains the various types of derivatives and financial instruments used by 3M, how and why 3M uses such instruments, how such instruments are accounted for, and how such instruments impact 3M’s financial position and performance.

Additional information with respect to the impacts on other comprehensive income of nonderivative hedging and derivative instruments is included in Note 5. Additional information with respect to the fair value of derivative instruments is included in Note 12. References to information regarding derivatives and/or hedging instruments associated with the Company’s long-term debt are also made in Note 9.

Types of Derivatives/Hedging Instruments and Inclusion in Income/Other Comprehensive Income

Cash Flow Hedges:

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income and reclassified into earnings in the same period during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings.

Cash Flow Hedging - Foreign Currency Forward and Option Contracts: The Company enters into foreign exchange forward and option contracts to hedge against the effect of exchange rate fluctuations on cash flows denominated in foreign currencies and certain intercompany financing transactions. These transactions are designated as cash flow hedges. The settlement or extension of these derivatives will result in reclassifications (from accumulated other comprehensive income) to earnings in the period during which the hedged transactions affect earnings. Generally, 3M dedesignates these cash flow hedge relationships in advance of the occurrence of the forecasted transaction. The portion of gains or losses on the derivative instrument previously accumulated in other comprehensive income for dedesignated hedges remains in accumulated other comprehensive income until the forecasted transaction occurs. Changes in the value of derivative instruments after dedesignation are recorded in earnings and are included in the Derivatives Not Designated as Hedging Instruments section below. Hedge ineffectiveness and the amount excluded from effectiveness testing recognized in income on cash flow hedges were not material for 2012, 2011 and 2010. The maximum length of time over which 3M hedges its exposure to the variability in future cash flows for a majority of the forecasted transactions is 12 months and, accordingly, at December 31, 2012, the majority of the Company’s open foreign exchange forward and option contracts had maturities of one year or less. The dollar equivalent gross notional amount of the Company’s foreign exchange forward and option contracts designated as cash flow hedges at December 31, 2012 was approximately $5.8 billion.

Cash Flow Hedging - Commodity Price Management: The Company manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts. The Company uses commodity price swaps relative to natural gas as cash flow hedges of forecasted transactions to manage price volatility. The related mark-to-market gain or loss on qualifying hedges is included in other comprehensive income to the extent effective, and reclassified into cost of sales in the period during which the hedged transaction affects earnings. Generally, the length of time over which 3M hedges its exposure to the variability in future cash flows for its forecasted natural gas transactions is 12 months. No significant commodity cash flow hedges were discontinued and hedge ineffectiveness was not material for 2012, 2011 and 2010. The dollar equivalent gross notional amount of the Company’s natural gas commodity price swaps designated as cash flow hedges at December 31, 2012 was $18 million.

Cash Flow Hedging — Forecasted Debt Issuance: In August 2011, in anticipation of the September 2011 issuance of $1 billion in five-year fixed rate notes, 3M executed a pre-issuance cash flow hedge on a notional amount of $400 million by entering into a forward-starting five-year floating-to-fixed interest rate swap. Upon debt issuance in September 2011, 3M terminated the floating-to-fixed interest rate swap. The termination of the swap resulted in a $7 million pre-tax loss ($4 million after-tax) that will be amortized over the five-year life of the note and, when material, is included in the tables below as part of the loss recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income.

As of December 31, 2012, the Company had a balance of $23 million associated with the after tax net unrealized loss associated with cash flow hedging instruments recorded in accumulated other comprehensive income. This includes a $3 million balance (loss) related to a floating-to-fixed interest rate swap (discussed in the preceding paragraph), which will be

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amortized over the five-year life of the note. 3M expects to reclassify a majority of the remaining balance to earnings over the next 12 months (with the impact offset by cash flows from underlying hedged items).

The location in the consolidated statements of income and comprehensive income and amounts of gains and losses related to derivative instruments designated as cash flow hedges are provided in the following table. Reclassifications of amounts from accumulated other comprehensive income into income include accumulated gains (losses) on dedesignated hedges at the time earnings are impacted by the forecasted transaction.

Year Ended December 31, 2012

(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative			Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income				Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount			Location	Amount			Location	Amount
Foreign currency forward/option contracts	$	(35	)	Cost of sales	$	41		Cost of sales	$	—
Foreign currency forward contracts	29			Interest expense	29			Interest expense	—
Commodity price swap contracts	(4		)	Cost of sales	(10		)	Cost of sales	—
Interest rate swap contracts	—			Interest expense	(1		)	Interest expense	—
Total	$	(10	)		$	59			$	—

Year Ended December 31, 2011

(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative			Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income				Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount			Location	Amount			Location	Amount
Foreign currency forward/option contracts	$	3		Cost of sales	$	(87	)	Cost of sales	$	—
Foreign currency forward contracts	(42		)	Interest expense	(41		)	Interest expense	—
Commodity price swap contracts	(4		)	Cost of sales	(6		)	Cost of sales	—
Interest rate swap contracts	(7		)	Interest expense	—			Interest expense	—
Total	$	(50	)		$	(134	)		$	—

Year Ended December 31, 2010

(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative			Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income				Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount			Location	Amount			Location	Amount
Foreign currency forward/option contracts	$	(30	)	Cost of sales	$	(39	)	Cost of sales	$	—
Foreign currency forward contracts	34			Interest expense	33			Interest expense	—
Commodity price swap contracts	(13		)	Cost of sales	(9		)	Cost of sales	—
Total	$	(9	)		$	(15	)		$	—

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Fair Value Hedges:

For derivative instruments that are designated and qualify as fair value hedges, the gain or loss on the derivatives as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings.

Fair Value Hedging - Interest Rate Swaps: The Company manages interest expense using a mix of fixed and floating rate debt. To help manage borrowing costs, the Company may enter into interest rate swaps. Under these arrangements, the Company agrees to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The mark-to-market of these fair value hedges is recorded as gains or losses in interest expense and is offset by the gain or loss of the underlying debt instrument, which also is recorded in interest expense. These fair value hedges are highly effective and, thus, there is no impact on earnings due to hedge ineffectiveness. The dollar equivalent (based on inception date foreign currency exchange rates) gross notional amount of the Company’s interest rate swaps at December 31, 2012 was $342 million.

At December 31, 2012, the Company had interest rate swaps designated as fair value hedges of underlying fixed rate obligations. In July 2007, in connection with the issuance of a seven-year Eurobond for an amount of 750 million Euros, the Company completed a fixed-to-floating interest rate swap on a notional amount of 400 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation. In August 2010, the Company terminated 150 million Euros of the notional amount of this swap. As a result, a gain of 18 million Euros, recorded as part of the balance of the underlying debt, will be amortized as an offset to interest expense over this debt’s remaining life. Prior to termination of the applicable portion of the interest rate swap, the mark-to-market of the hedge instrument was recorded as gains or losses in interest expense and was offset by the gain or loss on carrying value of the underlying debt instrument. Consequently, the subsequent amortization of the 18 million Euros recorded as part of the underlying debt balance is not part of gains on hedged items recognized in income in the tables below.

The Company also had two fixed-to-floating interest rate swaps with an aggregate notional amount of $800 million designated as fair value hedges of the fixed interest rate obligation under the $800 million, three-year, 4.50% notes issued in October 2008. These swaps and underlying note matured in the fourth quarter of 2011.

The location in the consolidated statements of income and amounts of gains and losses related to derivative instruments designated as fair value hedges and similar information relative to the hedged items are as follows:

Year ended December 31, 2012

	Gain (Loss) on Derivative				Gain (Loss) on Hedged Item
(Millions)	Recognized in Income				Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount			Location	Amount
Interest rate swap contracts	Interest expense	$	(5	)	Interest expense	$	5
Total		$	(5	)		$	5

Year ended December 31, 2011

	Gain (Loss) on Derivative				Gain (Loss) on Hedged Item
(Millions)	Recognized in Income				Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount			Location	Amount
Interest rate swap contracts	Interest expense	$	(10	)	Interest expense	$	10
Total		$	(10	)		$	10

Year ended December 31, 2010

	Gain (Loss) on Derivative				Gain (Loss) on Hedged Item
(Millions)	Recognized in Income				Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount			Location	Amount
Interest rate swap contracts	Interest expense	$	(16	)	Interest expense	$	16
Total		$	(16	)		$	16

Net Investment Hedges:

As circumstances warrant, the Company uses cross currency swaps, forwards and foreign currency denominated debt to hedge portions of the Company’s net investments in foreign operations. For hedges that meet the effectiveness requirements, the net gains or losses attributable to changes in spot exchange rates are recorded in cumulative translation within other comprehensive income. The remainder of the change in value of such instruments is recorded in earnings. Recognition in earnings of amounts previously recorded in cumulative translation is limited to circumstances such as complete or substantially complete liquidation of the net investment in the hedged foreign operation. At December 31, 2012, there were no cross currency swaps and foreign currency forward contracts designated as net investment hedges.

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In addition to the derivative instruments used as hedging instruments in net investment hedges, 3M also uses foreign currency denominated debt as nonderivative hedging instruments in certain net investment hedges. In July and December 2007, the Company issued seven-year fixed rate Eurobond securities for amounts of 750 million Euros and 275 million Euros, respectively. 3M designated each of these Eurobond issuances as hedging instruments of the Company’s net investment in its European subsidiaries.

The location in the consolidated statements of income and comprehensive income and amounts of gains and losses related to derivative and nonderivative instruments designated as net investment hedges are as follows. There were no reclassifications of the effective portion of net investment hedges out of accumulated other comprehensive income into income for the periods presented in the table below.

Year ended December 31, 2012

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument			Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount			Location	Amount
Foreign currency denominated debt	$	(29	)	N/A	$	—
Total	$	(29	)		$	—

Year ended December 31, 2011

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	41	N/A	$	—
Total	$	41		$	—

Year ended December 31, 2010

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	111	N/A	$	—
Total	$	111		$	—

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Derivatives Not Designated as Hedging Instruments:

Derivatives not designated as hedging instruments include dedesignated foreign currency forward and option contracts that formerly were designated in cash flow hedging relationships (as referenced in the Cash Flow Hedges section above). In addition, 3M enters into foreign currency forward contracts and commodity price swaps to offset, in part, the impacts of certain intercompany activities (primarily associated with intercompany licensing arrangements) and fluctuations in costs associated with the use of certain precious metals, respectively. These derivative instruments are not designated in hedging relationships; therefore, fair value gains and losses on these contracts are recorded in earnings. The dollar equivalent gross notional amount of these forward, option and swap contracts not designated as hedging instruments totaled $1.0 billion as of December 31, 2012. The Company does not hold or issue derivative financial instruments for trading purposes.

The location in the consolidated statements of income and amounts of gains and losses related to derivative instruments not designated as hedging instruments are as follows:

	Year ended December 31, 2012				Year ended December 31, 2011
Derivatives Not Designated as Hedging Instruments	Gain (Loss) on Derivative Recognized in Income				Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount			Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24	)	Cost of sales	$	13
Foreign currency forward contracts	Interest expense	22			Interest expense	9
Total		$	(2	)		$	22

	Year ended December 31, 2010
Derivatives Not Designated as Hedging Instruments	Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24	)
Foreign currency forward contracts	Interest expense	(19		)
Commodity price swap contracts	Cost of sales	1
Total		$	(42	)

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Location and Fair Value Amount of Derivative Instruments

The following tables summarize the fair value of 3M’s derivative instruments, excluding nonderivative instruments used as hedging instruments, and their location in the consolidated balance sheet. Additional information with respect to the fair value of derivative instruments is included in Note 12.

December 31, 2012

(Millions)	Assets			Liabilities
Fair Value of Derivative Instruments	Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts	Other current assets	$	39	Other current liabilities	$	85
Commodity price swap contracts	Other current assets	—		Other current liabilities	1
Interest rate swap contracts	Other assets	23		Other liabilities	—
Total derivatives designated as hedging instruments		$	62		$	86
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts	Other current assets	$	10	Other current liabilities	$	20
Total derivatives not designated as hedging instruments		$	10		$	20
Total derivative instruments		$	72		$	106

December 31, 2011

(Millions)	Assets			Liabilities
Fair Value of Derivative Instruments	Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts	Other current assets	$	82	Other current liabilities	$	34
Commodity price swap contracts	Other current assets	—		Other current liabilities	7
Interest rate swap contracts	Other assets	28		Other liabilities	—
Total derivatives designated as hedging instruments		$	110		$	41
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts	Other current assets	$	25	Other current liabilities	$	8
Total derivatives not designated as hedging instruments		$	25		$	8
Total derivative instruments		$	135		$	49

Credit Risk and Offsetting of Assets and Liabilities of Derivative Instruments

The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company’s risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. 3M enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between a 3M entity and the counterparty as a result of multiple, separate derivative transactions. As of December 31, 2012, 3M has International Swaps and Derivatives Association (ISDA) agreements with eight applicable banks and financial institutions which contain netting provisions. In addition to a master agreement with 3M supported by a primary counterparty’s parent guarantee, 3M also has associated credit support agreements in place with six of its primary derivative counterparties which, among other things, provide the circumstances under which either party is required to post eligible collateral (when the market value of transactions covered by these agreements exceeds specified thresholds or if a counterparty’s credit rating has been downgraded to a predetermined rating). The Company does not anticipate nonperformance by any of these counterparties.

3M has elected to present the fair value of derivative assets and liabilities within the Company’s consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation. However, the following tables provide information as if the Company had elected to offset the asset and liability balances of derivative instruments, netted in accordance with various criteria in the event of default or

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termination as stipulated by the terms of netting arrangements with each of the counterparties. For each counterparty, if netted, the Company would offset the asset and liability balances of all derivatives at the end of the reporting period based on the 3M entity that is a party to the transactions. Derivatives not subject to master netting agreements are not eligible for net presentation. As of the applicable dates presented below, no cash collateral had been received or pledged related to these derivative instruments.

Offsetting of Financial Assets/Liabilities under Master Netting Agreements with Derivative Counterparties

December 31, 2012

			Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)	Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	67	$	25	$	—	$	42
Derivatives not subject to master netting agreements	5						5
Total	$	72					$	47

December 31, 2012

			Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)	Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	106	$	25	$	—	$	81
Derivatives not subject to master netting agreements	—						—
Total	$	106					$	81

December 31, 2011

			Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)	Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	101	$	14	$	—	$	87
Derivatives not subject to master netting agreements	34						34
Total	$	135					$	121

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December 31, 2011

			Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)	Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	43	$	14	$	—	$	29
Derivatives not subject to master netting agreements	6						6
Total	$	49					$	35

Currency Effects

Currency Effects: 3M estimates that year-on-year currency effects, including hedging impacts, decreased net income attributable to 3M by approximately $103 million in 2012 and increased net income attributable to 3M by approximately $154 million in 2011. These estimates include the effect of translating profits from local currencies into U.S. dollars; the impact of currency fluctuations on the transfer of goods between 3M operations in the United States and abroad; and transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of swapping Venezuelan bolivars into U.S. dollars. 3M estimates that year-on-year derivative and other transaction gains and losses increased net income attributable to 3M by approximately $49 million in 2012 and had an immaterial impact on net income attributable to 3M in 2011.

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NOTE 12.  Fair Value Measurements

3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include 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, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Assets and Liabilities that are Measured at Fair Value on a Recurring Basis:

For 3M, assets and liabilities that are measured at fair value on a recurring basis primarily relate to available-for-sale marketable securities, available-for-sale investments (included as part of investments in the Consolidated Balance Sheet) and certain derivative instruments. Derivatives include cash flow hedges, interest rate swaps and most net investment hedges. The information in the following paragraphs and tables primarily addresses matters relative to these financial assets and liabilities. Separately, there were no material fair value measurements with respect to nonfinancial assets or liabilities that are recognized or disclosed at fair value in the Company’s financial statements on a recurring basis for 2012 and 2011.

3M uses various valuation techniques, which are primarily based upon the market and income approaches, with respect to financial assets and liabilities. Following is a description of the valuation methodologies used for the respective financial assets and liabilities measured at fair value.

Available-for-sale marketable securities — except auction rate securities:

Marketable securities, except auction rate securities, are valued utilizing multiple sources. A weighted average price is used for these securities. Market prices are obtained for these securities from a variety of industry standard data providers, security master files from large financial institutions, and other third-party sources. These multiple prices are used as inputs into a distribution-curve-based algorithm to determine the daily fair value to be used. 3M classifies U.S. treasury securities as level 1, while all other marketable securities (excluding auction rate securities) are classified as level 2. Marketable securities are discussed further in Note 8.

Available-for-sale marketable securities — auction rate securities only:

As discussed in Note 8, auction rate securities held by 3M failed to auction since the second half of 2007. As a result, investments in auction rate securities are valued utilizing third-party indicative bid levels in markets that are not active and broker-dealer valuation models that utilize inputs such as current/forward interest rates, current market conditions and credit default swap spreads. 3M classifies these securities as level 3.

Available-for-sale investments:

Investments include equity securities that are traded in an active market. Closing stock prices are readily available from active markets and are used as being representative of fair value. 3M classifies these securities as level 1.

Derivative instruments:

The Company’s derivative assets and liabilities within the scope of ASC 815, Derivatives and Hedging, are required to be recorded at fair value. The Company’s derivatives that are recorded at fair value include foreign currency forward and option contracts, commodity price swaps, interest rate swaps, and net investment hedges where the hedging instrument is recorded at fair value. Net investment hedges that use foreign currency denominated debt to hedge 3M’s net investment are not impacted by the fair value measurement standard under ASC 820, as the debt used as the hedging instrument is

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marked to a value with respect to changes in spot foreign currency exchange rates and not with respect to other factors that may impact fair value.

3M has determined that foreign currency forwards and commodity price swaps will be considered level 1 measurements as these are traded in active markets which have identical asset or liabilities, while currency swaps, foreign currency options, interest rate swaps and cross-currency swaps will be considered level 2. For level 2 derivatives, 3M uses inputs other than quoted prices that are observable for the asset. These inputs include foreign currency exchange rates, volatilities, and interest rates. The level 2 derivative positions are primarily valued using standard calculations/models that use as their basis readily observable market parameters. Industry standard data providers are 3M’s primary source for forward and spot rate information for both interest rates and currency rates, with resulting valuations periodically validated through third-party or counterparty quotes and a net present value stream of cash flows model.

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis.

			Fair Value Measurements
(Millions)	Fair Value at		Using Inputs Considered as
Description	Dec. 31, 2012		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
U.S. government agency securities	$	287	$	—	$	287	$	—
Foreign government agency securities	67		—		67		—
Corporate debt securities	965		—		965		—
Certificates of deposit/time deposits	41		—		41		—
Commercial paper	116		—		116		—
Asset-backed securities:
Automobile loan related	942		—		942		—
Credit card related	157		—		157		—
Equipment lease related	90		—		90		—
Other	39		—		39		—
U.S. treasury securities	72		72		—		—
U.S. municipal securities	27		—		27		—
Auction rate securities	7		—		—		7
Investments	3		3		—		—
Derivative instruments — assets:
Foreign currency forward/option contracts	49		49		—		—
Interest rate swap contracts	23		—		23		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts	105		104		1		—
Commodity price swap contracts	1		1		—		—

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			Fair Value Measurements
(Millions)	Fair Value at		Using Inputs Considered as
Description	Dec. 31, 2011		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
U.S. government agency securities	$	480	$	—	$	480	$	—
Foreign government agency securities	23		—		23		—
Corporate debt securities	668		—		668		—
Certificates of deposit/time deposits	49		—		49		—
Commercial paper	30		—		30		—
Asset-backed securities:
Automobile loan related	718		—		718		—
Credit card related	268		—		268		—
Equipment lease related	64		—		64		—
Other	5		—		5		—
U.S. treasury securities	34		34		—		—
U.S. municipal securities	14		—		14		—
Auction rate securities	4		—		—		4
Investments	4		4		—		—
Derivative instruments — assets:
Foreign currency forward/option contracts	107		98		9		—
Interest rate swap contracts	28		—		28		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts	42		42		—		—
Commodity price swap contracts	7		7		—		—

The following table provides a reconciliation of the beginning and ending balances of items measured at fair value on a recurring basis in the table above that used significant unobservable inputs (Level 3).

(Millions)
Marketable securities — auction rate securities only	2012		2011			2010
Beginning balance	$	4	$	7		$	5
Total gains or losses:
Included in earnings	—		—			—
Included in other comprehensive income	3		(3		)	2
Purchases, issuances, and settlements	—		—			—
Transfers in and/or out of Level 3	—		—			—
Ending balance (December 31)	7		4			7
Additional losses included in earnings due to reclassifications from other comprehensive income for:
Securities sold during the period ended December 31	—		—			—
Securities still held at December 31	—		—			—

In addition, the plan assets of 3M’s pension and postretirement benefit plans are measured at fair value on a recurring basis (at least annually). Refer to Note 10.

Assets and Liabilities that are Measured at Fair Value on a Nonrecurring Basis:

Disclosures are required for certain assets and liabilities that are measured at fair value, but are recognized and disclosed at fair value on a nonrecurring basis in periods subsequent to initial recognition. For 3M, such measurements of fair value relate primarily to long-lived asset impairments. There were no material long-lived asset impairments for 2012, 2011 and 2010.

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Fair Value of Financial Instruments:

The Company’s financial instruments include cash and cash equivalents, marketable securities, accounts receivable, certain investments, accounts payable, borrowings, and derivative contracts. The fair values of cash and cash equivalents, accounts receivable, accounts payable, and short-term borrowings and current portion of long-term debt approximated carrying values because of the short-term nature of these instruments. Available-for-sale marketable securities and investments, in addition to certain derivative instruments, are recorded at fair values as indicated in the preceding disclosures. For its long-term debt the Company utilized third-party quotes to estimate fair values (classified as level 2). Information with respect to the carrying amounts and estimated fair values of these financial instruments follow:

	December 31, 2012				December 31, 2011
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	4,916	$	5,363	$	4,484	$	5,002

The fair values reflected above consider the terms of the related debt absent the impacts of derivative/hedging activity. The carrying amount of long-term debt referenced above is impacted by certain fixed-to-floating interest rate swaps that are designated as fair value hedges and by the designation of fixed rate Eurobond securities issued by the Company as hedging instruments of the Company’s net investment in its European subsidiaries. 3M’s fixed-rate bonds were trading at a premium at December 31, 2012 and 2011 due to the low interest rates and tightening of 3M’s credit spreads.

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NOTE 13.  Commitments and Contingencies

Capital and Operating Leases:

Rental expense under operating leases was $300 million in 2012, $279 million in 2011 and $262 million in 2010. It is 3M’s practice to secure renewal rights for leases, thereby giving 3M the right, but not the obligation, to maintain a presence in a leased facility. 3M has two primary capital leases. First, 3M has a capital lease, which became effective in April 2003, that involves a building in the United Kingdom (with a lease term of 22 years). During the second quarter of 2003, 3M recorded a capital lease asset and obligation of approximately 33.5 million British Pound (GBP), or approximately $54 million at December 31, 2012 exchange rates. Second, during the fourth quarter of 2009, 3M recorded a capital lease asset and obligation of approximately $50 million related to an IT investment with an amortization period of seven years.

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year as of December 31, 2012, were as follows:

(Millions)	Capital Leases		Operating Leases
2013	$	22	$	194
2014	21		158
2015	8		119
2016	7		77
2017	4		68
After 2017	34		119
Total	$	96	$	735
Less: Amounts representing interest	6
Present value of future minimum lease payments	90
Less: Current obligations under capital leases	19
Long-term obligations under capital leases	$	71

Warranties/Guarantees:

3M’s accrued product warranty liabilities, recorded on the Consolidated Balance Sheet as part of current and long-term liabilities, are estimated at approximately $28 million at both December 31, 2012 and December 31, 2011. 3M does not consider this amount to be material. The fair value of 3M guarantees of loans with third parties and other guarantee arrangements are not material.

Related Party Activity:

3M does not have any material related party activity that is not in the ordinary course of business.

Legal Proceedings:

The Company and some of its subsidiaries are involved in numerous claims and lawsuits, principally in the United States, and regulatory proceedings worldwide. These include various products liability (involving products that the Company now or formerly manufactured and sold), intellectual property, and commercial claims and lawsuits, including those brought under the antitrust laws, and environmental proceedings. Unless otherwise stated, the Company is vigorously defending all such litigation.

Process for Disclosure and Recording of Liabilities and Insurance Receivables Related to Legal Proceedings

Many lawsuits and claims involve highly complex issues relating to causation, scientific evidence, and whether there are actual damages and are otherwise subject to substantial uncertainties. Assessments of lawsuits and claims can involve a series of complex judgments about future events and can rely heavily on estimates and assumptions. The Company complies with the requirements of ASC Topic 450, Contingencies, and related guidance, and records liabilities for legal proceedings in those instances where it can reasonably estimate the amount of the loss and where liability is probable. Where the reasonable estimate of the probable loss is a range, the Company records the most likely estimate of the loss, or the low end of the range if there is no one best estimate. The Company either discloses the amount of a possible loss or range of loss in excess of established accruals if estimable, or states that such an estimate cannot be made. The Company discloses significant legal proceedings even where liability is not probable or the amount of the liability is not estimable, or both, if the Company believes there is at least a reasonable possibility that a loss may be incurred.

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The Company estimates insurance receivables based on an analysis of its numerous policies, including their exclusions, pertinent case law interpreting comparable policies, its experience with similar claims, and assessment of the nature of the claim and remaining coverage, and records an amount it has concluded is likely to be recovered. For those insured matters where the Company has taken an accrual, the Company also records receivables for the amount of insurance that it expects to recover under the Company’s insurance program. For those insured matters where the Company has not taken an accrual because the liability is not probable or the amount of the liability is not estimable, or both, but where the Company has incurred an expense in defending itself, the Company records receivables for the amount of insurance that it expects to recover for the expense incurred.

Because litigation is subject to inherent uncertainties, and unfavorable rulings or developments could occur, there can be no certainty that the Company may not ultimately incur charges in excess of presently recorded liabilities. A future adverse ruling, settlement, or unfavorable development could result in future charges that could have a material adverse effect on the Company’s results of operations or cash flows in the period in which they are recorded. The Company currently believes that such future charges, if any, would not have a material adverse effect on the consolidated financial position of the Company. Based on experience and developments, the Company reexamines its estimates of probable liabilities and associated expenses and receivables each period, and whether it is able to estimate a liability previously determined to be not estimable and/or not probable. Where appropriate, the Company makes additions to or adjustments of its estimated liabilities. As a result, the current estimates of the potential impact on the Company’s consolidated financial position, results of operations and cash flows for the legal proceedings and claims pending against the Company could change in the future.

The following table shows the major categories of significant legal matters — respirator mask/asbestos litigation (including Aearo — described below), environmental remediation and other environmental liabilities — for which the Company has been able to estimate its probable liability and for which the Company has taken accruals and the related insurance receivables:

Liability and Receivable Balances
At December 31
(Millions)	2012		2011		2010
Respirator mask/asbestos liabilities	$	154	$	130	$	126
Respirator mask/asbestos insurance receivables	87		121		122
Environmental remediation liabilities	$	29	$	28	$	24
Environmental remediation insurance receivables	11		15		15
Other environmental liabilities	$	57	$	75	$	90
Other environmental insurance receivables	15		—		—

Respirator Mask/Asbestos Litigation

As of December 31, 2012, the Company is a named defendant, with multiple co-defendants, in numerous lawsuits in various courts that purport to represent approximately 2,060 individual claimants compared to approximately 2,260 individual claimants with actions pending at December 31, 2011.

The vast majority of the lawsuits and claims resolved by and currently pending against the Company allege use of some of the Company’s mask and respirator products and seek damages from the Company and other defendants for alleged personal injury from workplace exposures to asbestos, silica, coal mine dust or other occupational dusts found in products manufactured by other defendants or generally in the workplace. A minority of the lawsuits and claims resolved by and currently pending against the Company generally allege personal injury from occupational exposure to asbestos from products previously manufactured by the Company, which are often unspecified, as well as products manufactured by other defendants, or occasionally at Company premises.

The Company’s current volume of new and pending matters is substantially lower than its historical experience. The Company expects that filing of claims by unimpaired claimants in the future will continue to be at much lower levels than in the past. Accordingly, the number of claims alleging more serious injuries, including mesothelioma and other malignancies, will represent a greater percentage of total claims than in the past. The Company has prevailed in all nine cases taken to trial, including seven of the eight cases tried to verdict (such trials occurred in 1999, 2000, 2001, 2003, 2004, and 2007), and an appellate reversal in 2005 of the 2001 jury verdict adverse to the Company. The ninth case, tried in 2009, was dismissed by the Court at the close of plaintiff’s evidence, based on the Court’s legal finding that the plaintiff had not presented sufficient evidence to support a jury verdict. The plaintiffs appealed but in February 2012 the California Court of Appeals granted the plaintiff’s voluntary dismissal of the appeal.

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The Company has demonstrated in these past trial proceedings that its respiratory protection products are effective as claimed when used in the intended manner and in the intended circumstances. Consequently the Company believes that claimants are unable to establish that their medical conditions, even if significant, are attributable to the Company’s respiratory protection products. Nonetheless the Company’s litigation experience indicates that claims of persons with malignant conditions are costlier to resolve than the claims of unimpaired persons, and it therefore believes the average cost of resolving pending and future claims on a per-claim basis will continue to be higher than it experienced in prior periods when the vast majority of claims were asserted by the unimpaired.

As previously reported, the State of West Virginia, through its Attorney General, filed a complaint in 2003 against the Company and two other manufacturers of respiratory protection products in the Circuit Court of Lincoln County, West Virginia and amended its complaint in 2005. The amended complaint seeks substantial, but unspecified, compensatory damages primarily for reimbursement of the costs allegedly incurred by the State for worker’s compensation and healthcare benefits provided to all workers with occupational pneumoconiosis and unspecified punitive damages. While the case has been inactive since the fourth quarter of 2007, the Court held a case management conference in March 2011, but no further activity has occurred in the case since that conference. No liability has been recorded for this matter because the Company believes that liability is not probable and estimable at this time. In addition, the Company is not able to estimate a possible loss or range of loss given the minimal activity in this case and the fact that the complaint asserts claims against two other manufacturers where a defendant’s share of liability may turn on the law of joint and several liability and by the amount of fault a jury allocates to each defendant if a case is ultimately tried.

Plaintiffs have asserted specific dollar claims for damages in approximately 40% of the 1,149 lawsuits that were pending against the Company at the end of 2012 in all jurisdictions. A majority of states restrict or prohibit specifying damages in tort cases such as these, and most of the remaining jurisdictions do not require such specification. In those cases in which plaintiffs choose to assert specific dollar amounts in their complaints, brought in states that permit such pleading, the amounts claimed are typically not meaningful as an indicator of the Company’s potential liability. This is because (a) the amounts claimed typically bear no relation to the extent of the plaintiff’s injury, if any; (b) the complaints nearly always assert claims against multiple defendants with the typical complaint asserting claims against as few as a dozen different defendants to upwards of 100 different defendants, the damages alleged are not attributed to individual defendants, and a defendant’s share of liability may turn on the law of joint and several liability, which can vary by state, and by the amount of fault a jury allocates to each defendant if a case is ultimately tried before a jury; (c) many cases are filed against the Company even though the plaintiffs did not use any of the Company’s products and, ultimately, are withdrawn or dismissed without any payment; and (d) many cases are brought on behalf of plaintiffs who have not suffered any medical injury, and, ultimately, are resolved without any payment or a payment that is a small fraction of the damages initially claimed. Of the 465 pending cases in which purported damage amounts are specified in the complaints, 281 cases involve claims of $100,000 or less (18 of which also allege punitive damages of $15,000, 13 of which also allege punitive damages of $10 million, and 3 of which also allege punitive damages of $20 million); 59 cases involve claims between $100,000 and $3 million (45 of which also allege punitive damages of $250,000, and 8 of which also allege punitive damages of $1 million); 7 cases involve claims between $3 million and $7.5 million (all of which also allege punitive damages of $5 million); 5 cases involve claims of $10 million (4 of which also allege punitive damages of $10 million); 72 cases involve claims of $10 million to $50 million (all of which also allege punitive damages of $13 million); 4 cases involve claims of $50 million (all of which also allege punitive damages of $50 million) and 37 cases involve claims of over $50 million (36 of which allege punitive damages of $100 million). Some complaints allege that the compensatory and punitive damages are at least the amounts specified. As previously stated, the Company’s experience and the other reasons cited indicate that the damage amounts specified in complaints are not a meaningful factor in any assessment of the Company’s potential liability.

Respirator Mask/Asbestos Liabilities and Insurance Receivables: The Company estimates its respirator mask/asbestos liabilities, including the cost to resolve the claims and defense costs, by examining: (i) the Company’s experience in resolving claims, (ii) apparent trends, (iii) the apparent quality of claims (e.g., whether the claim has been asserted on behalf of asymptomatic claimants), (iv) changes in the nature and mix of claims (e.g., the proportion of claims asserting usage of the Company’s mask or respirator products and alleging exposure to each of asbestos, silica, coal or other occupational dusts, and claims pleading use of asbestos-containing products allegedly manufactured by the Company), (v) the number of current claims and a projection of the number of future asbestos and other claims that may be filed against the Company, (vi) the cost to resolve recently settled claims, and (vii) an estimate of the cost to resolve and defend against current and future claims.

Developments may occur that could affect the Company’s estimate of its liabilities. These developments include, but are not limited to, significant changes in (i) the number of future claims, (ii) the average cost of resolving claims, (iii) the legal costs of defending these claims and in maintaining trial readiness, (iv) changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) changes in the law and procedure applicable to these claims, and (vii) the financial viability of other co-defendants and insurers.

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As a result of the greater cost of resolving claims of persons with more serious injuries, including mesothelioma and other malignancies, the Company increased its accruals in 2012 for respirator mask/asbestos liabilities by $71 million. During 2012, the Company made payments for fees and settlements of $45 million related to the respirator mask/asbestos litigation. As of December 31, 2012, the Company had accruals for respirator mask/asbestos liabilities of $126 million (excluding Aearo accruals). The Company cannot estimate the amount or range of amounts by which the liability may exceed the accrual the Company has established because of the (i) inherent difficulty in projecting the number of claims that have not yet been asserted, particularly with respect to the Company’s respiratory products that themselves did not contain any harmful materials, (ii) the complaints nearly always assert claims against multiple defendants where the damages alleged are typically not attributed to individual defendants so that a defendant’s share of liability may turn on the law of joint and several liability, which can vary by state, (iii) the multiple factors described above that the Company considers in estimating its liabilities, and (iv) the several possible developments described above that may occur that could affect the Company’s estimate of liabilities.

As of December 31, 2012, the Company’s receivable for insurance recoveries related to the respirator mask/asbestos litigation was $87 million. In 2012, the Company increased its receivables for expected insurance recoveries by $39 million related to this litigation. The Company estimates insurance receivables based on an analysis of its numerous policies, including their exclusions, pertinent case law interpreting comparable policies, its experience with similar claims, and assessment of the nature of the claim and remaining coverage, and records an amount it has concluded is likely to be recovered.

Various factors could affect the timing and amount of recovery of this receivable, including (i) delays in or avoidance of payment by insurers; (ii) the extent to which insurers may become insolvent in the future, and (iii) the outcome of negotiations with insurers and legal proceedings with respect to respirator mask/asbestos liability insurance coverage. The difference between the accrued liability and insurance receivable represents in part the time delay between payment of claims on the one hand and receipt of insurance reimbursements on the other hand. Because of the lag time between settlement and payment of a claim, no meaningful conclusions may be drawn from quarterly or annual changes in the amount of receivables for expected insurance recoveries or changes in the number of claimants.

As previously reported, on January 5, 2007 the Company was served with a declaratory judgment action filed on behalf of two of its insurers (Continental Casualty and Continental Insurance Co. — both part of the Continental Casualty Group) disclaiming coverage for respirator mask/asbestos claims. The action, pending in the District Court in Ramsey County, Minnesota, seeks declaratory judgment regarding coverage provided by the policies and the allocation of covered costs among the policies issued by the various insurers. The action named, in addition to the Company, over 60 of the Company’s insurers. This action is similar in nature to an action filed in 1994 with respect to breast implant coverage, which ultimately resulted in the Minnesota Supreme Court’s ruling of 2003 that was largely in the Company’s favor. The plaintiff insurers have served an amended complaint that names some additional insurers and deletes others. A significant number of the insurer defendants named in the amended complaint have been dismissed because of settlements they have reached with 3M regarding the matters at issue in the lawsuit. The case is currently in the discovery phase. Trial is scheduled to begin in the summer of 2013. During 2012, the Company reached settlements with several insurers, including Continental Casualty and Continental Insurance Co. mentioned above, that will result in payments totaling approximately $87 million ($72 million of which has been received in 2012) to the Company over the next year.

Respirator Mask/Asbestos Litigation — Aearo Technologies

On April 1, 2008, a subsidiary of the Company purchased the stock of Aearo Holding Corp., the parent of Aearo Technologies (“Aearo”). Aearo manufactured and sold various products, including personal protection equipment, such as eye, ear, head, face, fall and certain respiratory protection products.

As of December 31, 2012, Aearo and/or other companies that previously owned and operated Aearo’s respirator business (American Optical Corporation, Warner-Lambert LLC, AO Corp. and Cabot Corporation (“Cabot”)) are named defendants, with multiple co-defendants, including the Company, in numerous lawsuits in various courts in which plaintiffs allege use of mask and respirator products and seek damages from Aearo and other defendants for alleged personal injury from workplace exposures to asbestos, silica-related, or other occupational dusts found in products manufactured by other defendants or generally in the workplace.

As of December 31, 2012, the Company, through its Aearo subsidiary, has recorded $28 million as the best estimate of the probable liabilities for product liabilities and defense costs related to current and future Aearo-related asbestos and silica-related claims. Responsibility for legal costs, as well as for settlements and judgments, is currently shared in an informal arrangement among Aearo, Cabot, American Optical Corporation and a subsidiary of Warner Lambert and their insurers (the “Payor Group”). Liability is allocated among the parties based on the number of years each company sold respiratory products under the “AO Safety” brand and/or owned the AO Safety Division of American Optical Corporation and the alleged years of exposure of the individual plaintiff. Aearo’s share of the contingent liability is further limited by an agreement entered into between Aearo and Cabot on July 11, 1995. This agreement provides that, so long as Aearo pays to Cabot an annual

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fee of $400,000, Cabot will retain responsibility and liability for, and indemnify Aearo against, asbestos and silica-related product liability claims for respirators manufactured prior to July 11, 1995. Because the date of manufacture for a particular respirator allegedly used in the past is often difficult to determine, Aearo and Cabot have applied the agreement to claims arising out of the alleged use of respirators while exposed to asbestos or silica or products containing asbestos or silica prior to January 1, 1997. With these arrangements in place, Aearo’s potential liability is limited to exposures alleged to have arisen from the use of respirators involving exposure to asbestos, silica, or silica products on or after January 1, 1997. To date, Aearo has elected to pay the annual fee. Aearo could potentially be exposed to additional claims for some part of the pre-July 11, 1995 period covered by its agreement with Cabot if Aearo elects to discontinue its participation in this arrangement, or if Cabot is no longer able to meet its obligations in these matters.

In March 2012, Cabot CSC Corporation and Cabot Corporation filed a lawsuit against Aearo in the Superior Court of Suffolk County, Massachusetts seeking declaratory relief as to the scope of Cabot’s indemnity obligations under the July 11, 1995 agreement, including whether Cabot has retained liability for coal workers’ pneumoconiosis claims, and seeking damages for breach of contract.

Developments may occur that could affect the estimate of Aearo’s liabilities. These developments include, but are not limited to: (i) significant changes in the number of future claims, (ii) significant changes in the average cost of resolving claims, (iii) significant changes in the legal costs of defending these claims, (iv) significant changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) significant changes in the law and procedure applicable to these claims, (vii) significant changes in the liability allocation among the co-defendants, (viii) the financial viability of members of the Payor Group including exhaustion of available coverage limits, (ix) the outcome of pending insurance coverage litigation among certain other members of the Payor Group and their respective insurers, and/or (x) a determination that the interpretation of the contractual obligations on which Aearo has estimated its share of liability is inaccurate. The Company cannot determine the impact of these potential developments on its current estimate of Aearo’s share of liability for these existing and future claims. If any of the developments described above were to occur, the actual amount of these liabilities for existing and future claims could be significantly larger than the amount accrued.

Because of the inherent difficulty in projecting the number of claims that have not yet been asserted, the complexity of allocating responsibility for future claims among the Payor Group, and the several possible developments that may occur that could affect the estimate of Aearo’s liabilities, the Company cannot estimate the amount or range of amounts by which Aearo’s liability may exceed the accrual the Company has established.

Environmental Matters and Litigation

The Company’s operations are subject to environmental laws and regulations including those pertaining to air emissions, wastewater discharges, toxic substances, and the handling and disposal of solid and hazardous wastes enforceable by national, state, and local authorities around the world, and private parties in the United States and abroad. These laws and regulations provide, under certain circumstances, a basis for the remediation of contamination, for restoration of or compensation for damages to natural resources, and for personal injury and property damage claims. The Company has incurred, and will continue to incur, costs and capital expenditures in complying with these laws and regulations, defending personal injury and property damage claims, and modifying its business operations in light of its environmental responsibilities. In its effort to satisfy its environmental responsibilities and comply with environmental laws and regulations, the Company has established, and periodically updates, policies relating to environmental standards of performance for its operations worldwide.

Under certain environmental laws, including the United States Comprehensive Environmental Response, Compensation and Liability Act of 1980 and similar state laws, the Company may be jointly and severally liable, typically with other companies, for the costs of remediation of environmental contamination at current or former facilities and at off-site locations. The Company has identified numerous locations, most of which are in the United States, at which it may have some liability. Please refer to the paragraph entitled “Environmental Liabilities and Insurance Receivables” that follows for information on the amount of the accrual.

Environmental Matters

As previously reported, the Company has been voluntarily cooperating with ongoing reviews by local, state, national (primarily the U.S. Environmental Protection Agency (EPA)), and international agencies of possible environmental and health effects of various perfluorinated compounds (“PFCs”), including perfluorooctanyl compounds such as perfluorooctanoate (“PFOA”) and perfluorooctane sulfonate (“PFOS”). As a result of its phase-out decision in May 2000, the Company no longer manufactures perfluorooctanyl compounds. The company ceased manufacturing and using the vast majority of these compounds within approximately two years of the phase-out announcement, and ceased all manufacturing and the last significant use of this chemistry by 2008. Through its ongoing life cycle management and its raw material composition identification processes associated with the Company’s policies covering the use of all persistent and bio-accumulative materials, the Company has on occasion identified the presence of precursor chemicals in materials purchased from

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suppliers that may ultimately degrade to PFOA, PFOS or similar compounds. Upon such identification, the Company works to find alternatives for such chemicals.

Regulatory activities concerning PFOA and/or PFOS continue in the United States, Europe and elsewhere, and before certain international bodies. These activities include gathering of exposure and use information, risk assessment, and consideration of regulatory approaches. The EPA continues to develop Drinking Water Health Advisories for PFOS and PFOA, which are expected to be released in 2013. Those advisory levels will supersede the current provisional advisory levels. In an effort to move toward developing standards under the Safe Drinking Water Act, the EPA published on May 2, 2012 a list of unregulated substances, including six PFCs, required to be monitored during the period 2013-2015 by public water system suppliers to determine the extent of their occurrence.

The Agency for Toxic Substances and Disease Registry (ATSDR) has completed a bio-monitoring study evaluating PFC blood levels in volunteers living near fields where wastewater treatment sludge was applied from the municipal wastewater treatment plant in Decatur, Alabama that received wastewater from numerous sources, including sanitary wastewater from 3M. The Company expects ATSDR to release its report in 2013.

3M continues its third and final phase of work pursuant to a Memorandum of Understanding with the EPA regarding an environmental assessment program at the Company’s Decatur manufacturing site. That work includes groundwater sampling off-site from the 3M Decatur facility as well as at three local landfills used by the facility. The Company shared results from this final phase of sampling work with the EPA in September, 2012.

The Company is continuing to make progress in its work, under the supervision of state regulators, to address its historic disposal of PFC-containing waste associated with manufacturing operations at the Cottage Grove, Minnesota and Decatur, Alabama plants.

As previously reported, the Company entered into a voluntary remedial action agreement with the Alabama Department of Environmental Management (ADEM) to address the presence of PFCs in the soil at the Company’s manufacturing facility in Decatur, Alabama. For approximately twenty years, the Company incorporated its wastewater treatment plant sludge containing PFCs in fields at its Decatur facility pursuant to a permit issued by ADEM. After a review of the available options to address the presence of PFCs in the soil, ADEM agreed that the preferred remediation option is to use a multilayer cap over the former sludge incorporation areas on the manufacturing site with subsequent groundwater migration controls and treatment. Implementation of that option will continue throughout the balance of 2013 and is expected to be completed in 2016.

The Company continues to work with the Minnesota Pollution Control Agency (MPCA) pursuant to the terms of the previously disclosed May 2007 Settlement Agreement and Consent Order to address the presence of certain PFCs in the soil and groundwater at former disposal sites in Washington County, Minnesota (Oakdale and Woodbury) and at the Company’s manufacturing facility at Cottage Grove, Minnesota. Under this agreement, the Company’s principal obligations include (i) evaluating releases of certain PFCs from these sites and proposing response actions; (ii) providing treatment or alternative drinking water upon identifying any level exceeding a Health Based Value (“HBV”) or Health Risk Limit (“HRL”) (i.e., the amount of a chemical in drinking water determined by the Minnesota Department of Health (MDH) to be safe for human consumption over a lifetime) for certain PFCs for which a HBV and/or HRL exists as a result of contamination from these sites; (iii) remediating identified sources of other PFCs at these sites that are not controlled by actions to remediate PFOA and PFOS; and (iv) sharing information with the MPCA about certain perfluorinated compounds. During 2008, the MPCA issued formal decisions adopting remedial options for the former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). In August 2009, the MPCA issued a formal decision adopting remedial options for the Company’s Cottage Grove manufacturing facility. During the spring and summer of 2010, 3M began implementing the agreed upon remedial options at the Cottage Grove and Woodbury sites. 3M commenced the remedial option at the Oakdale site in late 2010. At each location the remedial options were recommended by the Company and approved by the MPCA. Remediation work has been completed at the Oakdale site, and it is in an operational maintenance mode. Remediation will continue at the other two sites during 2013.

The Company cannot predict what additional regulatory actions arising from the foregoing proceedings and activities, if any, may be taken regarding such compounds or the consequences of any such actions.

Environmental Litigation

As previously reported, a former employee filed a purported class action lawsuit in 2002 in the Circuit Court of Morgan County, Alabama seeking unstated damages and alleging that the plaintiffs suffered fear, increased risk, subclinical injuries, and property damage from exposure to certain perfluorochemicals at or near the Company’s Decatur, Alabama, manufacturing facility. The Circuit Court in 2005 granted the Company’s motion to dismiss the named plaintiff’s personal injury-related claims on the basis that such claims are barred by the exclusivity provisions of the state’s Workers Compensation Act. The plaintiffs’ counsel filed an amended complaint in November 2006, limiting the case to property damage claims on behalf of a purported class of residents and property owners in the vicinity of the Decatur plant. Also, in

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2005, the judge in a second purported class action lawsuit (filed by three residents of Morgan County, Alabama, seeking unstated compensatory and punitive damages involving alleged damage to their property from emissions of certain perfluorochemical compounds from the Company’s Decatur, Alabama, manufacturing facility that formerly manufactured those compounds) granted the Company’s motion to abate the case, effectively putting the case on hold pending the resolution of class certification issues in the first action described above filed in the same court in 2002. Despite the stay, plaintiffs filed an amended complaint seeking damages for alleged personal injuries and property damage on behalf of the named plaintiffs and the members of a purported class. No further action in the case is expected unless and until the stay is lifted.

In February 2009, a resident of Franklin County, Alabama, filed a purported class action lawsuit in the Circuit Court of Franklin County seeking compensatory damages and injunctive relief based on the application by the Decatur utility’s wastewater treatment plant of wastewater treatment sludge to farmland and grasslands in the state that allegedly contain PFOA, PFOS and other perfluorochemicals. The named defendants in the case include 3M, its subsidiary Dyneon LLC, Daikin America, Inc., Synagro-WWT, Inc., Synagro South, LLC and Biological Processors of America. The named plaintiff seeks to represent a class of all persons within the State of Alabama who have had PFOA, PFOS and other perfluorochemicals released or deposited on their property. In March 2010, the Alabama Supreme Court ordered the case transferred from Franklin County to Morgan County. In May, 2010, consistent with its handling of the other matters, the Morgan County Circuit Court abated this case, putting it on hold pending the resolution of the class certification issues in the first case filed there.

In December 2010, the State of Minnesota, by its Attorney General Lori Swanson, acting in its capacity as trustee of the natural resources of the State of Minnesota, filed a lawsuit in Hennepin County District Court against 3M to recover damages (including unspecified assessment costs and reasonable attorney’s fees) for alleged injury to, destruction of, and loss of use of certain of the State’s natural resources under the Minnesota Environmental Response and Liability Act (MERLA) and the Minnesota Water Pollution Control Act (MWPCA), as well as statutory nuisance and common law claims of trespass, nuisance, and negligence with respect to the presence of PFCs in the groundwater, surface water, fish or other aquatic life and sediments. The State also seeks declarations under MERLA that 3M is responsible for all damages the State may suffer in the future for injuries to natural resources from releases of PFCs into the environment, and under MWPCA that 3M is responsible for compensation for future loss or destruction of fish, aquatic life and other damages.

In January 2011, the City of Lake Elmo filed a motion to intervene in the State of Minnesota lawsuit and seeks damages in excess of $50,000 and other legal and equitable relief, including reasonable attorneys’ fees, for alleged contamination of city property, wells, groundwater and water contained in the wells with PFCs under several theories, including common law and statutory nuisance, strict liability, trespass, negligence, and conversion. The court granted the City of Lake Elmo’s motion to intervene in this lawsuit.

In November 2011, the Metropolitan Council filed a motion to intervene and a complaint in the State of Minnesota lawsuit seeking damages in excess of $50,000 and other legal, declaratory and equitable relief, including reasonable attorneys’ fees, for costs and fees that the Metropolitan Council alleges it will be required to assess at some time in the future if the MPCA imposes restrictions on Metropolitan Council’s PFOS discharges to the Mississippi River. Metropolitan Council’s intervention motion was based on several theories, including common law negligence, and statutory claims under MERLA for response costs and under the Minnesota Environmental Rights Act (MERA) for declaratory and equitable relief against 3M for PFOS and other PFC pollution of the waters and sediments of the Mississippi River. 3M did not object to the motion to intervene. In January 2012, 3M answered the Metropolitan Council’s complaint and filed a counterclaim alleging that the Metropolitan Council discharges PFCs to the Mississippi River and discharges PFC-containing sludge and biosolids from one or more of its wastewater treatment plants onto agricultural lands and local area landfills. Accordingly, 3M requested that if the Court finds that the State is entitled to any of the damages the State seeks, 3M seeks contribution and apportionment from the Metropolitan Council, including attorneys’ fees, under MERLA, and contribution from and liability for the Metropolitan Council’s proportional share of damages awarded to the State under the MWPCA, as well as under statutory nuisance and common law theories of trespass, nuisance and negligence. 3M also seeks declaratory relief under MERA.

In May 2012, 3M filed a motion to disqualify the State of Minnesota’s counsel, Covington & Burling, LLP (Covington). In October 2012, the court granted 3M’s motion to disqualify Covington as counsel to the State and stayed discovery in the natural resources damages case for up to 180 days to give the State time to secure new counsel. In October 2012, the State and Covington appealed the court’s disqualification to the Minnesota Court of Appeals.

In June 2009, the Company, along with more than 250 other companies, was served with a third-party complaint seeking contribution towards the cost of cleaning up a 17-mile stretch of the Passaic River in New Jersey. After commencing an enforcement action in 1990, the State of New Jersey filed suit against Maxus Energy, Tierra Solutions, Occidental Chemical and two other companies seeking cleanup and removal costs and other damages associated with the presence of dioxin and other hazardous substances in the sediment of the Passaic. The third-party complaint seeks to spread those costs among the third-party defendants, including 3M. Allegations asserted against 3M relate to its use of two commercial

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drum conditioning facilities in New Jersey. Currently, the State of New Jersey is actively negotiating with third-party defendants, including 3M, to settle pending claims related to the state’s response costs. The potential scope of a state settlement remains uncertain and would not include release from potential federal claims, yet to be asserted, related to the final cleanup costs. Total costs for the remedy currently proposed by EPA could easily exceed $1 billion. While the Company does not yet have a basis for estimating its potential exposure in this case, or in the yet to be asserted EPA claim, the Company currently believes its allocable share of the possible loss, if any, is likely to be a fraction of one percent of the total costs because of the Company’s limited potential involvement at this site.

For environmental litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company’s consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time, with the exception of the Passaic River litigation, where the Company’s potential exposure, if any, is likely to be a fraction of one percent of the total costs.

Environmental Liabilities and Insurance Receivables

As of December 31, 2012, the Company had recorded liabilities of $29 million for estimated “environmental remediation” costs based upon an evaluation of currently available facts with respect to each individual site and also recorded related insurance receivables of $11 million. The Company records liabilities for remediation costs on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company’s commitment to a plan of action. Liabilities for estimated costs of environmental remediation, depending on the site, are based primarily upon internal or third-party environmental studies, and estimates as to the number, participation level and financial viability of any other potentially responsible parties, the extent of the contamination and the nature of required remedial actions. The Company adjusts recorded liabilities as further information develops or circumstances change. The Company expects that it will pay the amounts recorded over the periods of remediation for the applicable sites, currently ranging up to 20 years.

As of December 31, 2012, the Company had recorded liabilities of $57 million for “other environmental liabilities” based upon an evaluation of currently available facts to implement the Settlement Agreement and Consent Order with the MPCA, the remedial action agreement with ADEM, and to address trace amounts of perfluorinated compounds in drinking water sources in the City of Oakdale, Minnesota, as well as presence in the soil and groundwater at the Company’s manufacturing facilities in Decatur, Alabama, and Cottage Grove, Minnesota, and at two former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). The Company expects that most of the spending will occur over the next four years. In 2012, the Company recorded expected insurance recoveries of $15 million related to “other environmental liabilities.”

It is difficult to estimate the cost of environmental compliance and remediation given the uncertainties regarding the interpretation and enforcement of applicable environmental laws and regulations, the extent of environmental contamination and the existence of alternative cleanup methods. Developments may occur that could affect the Company’s current assessment, including, but not limited to: (i) changes in the information available regarding the environmental impact of the Company’s operations and products; (ii) changes in environmental regulations, changes in permissible levels of specific compounds in drinking water sources, or changes in enforcement theories and policies, including efforts to recover natural resource damages; (iii) new and evolving analytical and remediation techniques; (iv) success in allocating liability to other potentially responsible parties; and (v) the financial viability of other potentially responsible parties and third-party indemnitors. For sites included in both “environmental remediation liabilities” and “other environmental liabilities,” at which remediation activity is largely complete and remaining activity relates primarily to operation and maintenance of the remedy, including required post-remediation monitoring, the Company believes the exposure to loss in excess of the amount accrued would not be material to the Company’s consolidated results of operations or financial condition. However, for locations at which remediation activity is largely ongoing, the Company cannot estimate a possible loss or range of loss in excess of the associated established accruals for the reasons described above.

Compliance Matters

In November 2009, the Company contacted the Department of Justice (DOJ) and Securities and Exchange Commission (SEC) to voluntarily disclose that the Company was conducting an internal investigation as a result of reports it received about its subsidiary in Turkey, alleging bid rigging and bribery and other inappropriate conduct in connection with the supply of certain reflective and other materials and related services to Turkish government entities. The Company also contacted certain affected government agencies in Turkey. In September 2012, the Turkish Competition Authority issued its decision finding that there was insufficient evidence obtained in the investigation to find that 3M Turkey or the other companies investigated violated the Turkish competition law.

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The Company retained outside counsel to conduct an assessment of its policies, practices, and controls and to evaluate its overall compliance with the Foreign Corrupt Practices Act (FCPA), including a review of its practices in certain other countries and acquired entities. As part of its review, the Company has also reported to the DOJ and SEC issues arising from transactions in other countries. In January 2013, the DOJ and SEC each notified the Company that they are terminating their investigations into possible violations of the FCPA without taking any action or imposing any fines against the Company. Among the reasons cited by the DOJ for closing its investigation included the Company’s voluntary disclosure and cooperation, the Company’s thorough investigation, and the steps the Company has taken to enhance its anti-corruption compliance program.

Other Matters

Commercial Litigation

In September 2010, various parties, on behalf of a purported class of shareholders of Cogent, Inc. (“Cogent”), commenced three lawsuits against the Company, Cogent, and its directors in the Delaware Court of Chancery. Plaintiffs allege that 3M, in connection with its tender offer for Cogent shares, aided and abetted the breach of fiduciary duties by Cogent directors and seek an unspecified amount of damages. The three cases were consolidated, expedited discovery was conducted, and Plaintiffs’ motion for a preliminary injunction to enjoin the acquisition was denied on October 1, 2010. On November 15, 2010, plaintiffs filed an amended complaint that added Cogent directors appointed by 3M, as named defendants, and asserted additional claims of breach of fiduciary duties in connection with the acquisition and a subsequent offering period. 3M completed its acquisition of Cogent in December 2010. In March 2012, all parties to the litigation agreed to settle this litigation for an amount that is not material to the Company. On August 30, 2012, the Court of Chancery approved the settlement and dismissed plaintiffs’ claims.

Separately, several purported holders of Cogent shares, representing a total of approximately 5.8 million shares, have asserted appraisal rights under Delaware law. The Company has answered the appraisal petition and is defending this matter vigorously. Trial in Delaware occurred in November 2012; post-trial briefing is ongoing.

In October 2012, four plaintiffs filed purported class actions against Ceradyne, its directors, 3M and Cyborg Acquisition Corporation (a direct wholly owned subsidiary of 3M) in connection with 3M’s proposed acquisition of Ceradyne. Two suits were filed in California Superior Court for Orange County and two were filed in the Delaware Chancery Court. The suits seek principally to enjoin the proposed acquisition of Ceradyne, and allege that the defendants breached and/or aided and abetted the breach of their fiduciary duties to Ceradyne by seeking to sell Ceradyne through an allegedly unfair process and for an unfair price and on unfair terms, and/or by allegedly failing to make adequate disclosures to Ceradyne stockholders regarding the proposed acquisition of Ceradyne. The California court consolidated the two California actions. In the Delaware cases, the plaintiffs’ motions to expedite proceedings, which the defendants have opposed, was denied by the Delaware Chancery Court. The parties reached a settlement of those matters for an amount that is not material to the Company. The settlement papers are presently being drafted, and the settlement will be presented to the California court for preliminary and final approval.

Separately, one Ceradyne shareholder, who purports to hold 16,656 shares, filed a petition for appraisal rights under Delaware law.

3M filed suit against Avery Dennison Corporation in the United States District Court for the District of Minnesota in June 2010, alleging that Avery’s OmniCube™ full cube retroreflective sheeting products, which are used for highway signage, infringe a number of 3M patents. 3M’s motion to preliminarily enjoin the sales of Avery’s OmniCube retroreflective sheeting was denied in December 2010. 3M also sought a declaratory judgment from the District Court in Minnesota that 3M’s Diamond Grade™ DG3 full cube retroreflective sheeting does not infringe two Avery patents. The District Court granted Avery’s motion to dismiss 3M’s declaratory judgment suit in March 2011. 3M appealed the dismissal of the declaratory judgment lawsuit, and in January 2012, the Federal Circuit Court of Appeals issued a decision reversing the district court and reinstating the declaratory judgment action. Avery did not appeal this decision, and that action, including Avery’s counterclaims against 3M for infringement of the Avery patents, is proceeding in the District Court in Minnesota. In October 2010, Avery Dennison filed a lawsuit against the Company in the United States District Court for the Central District of California, alleging that 3M monopolized or attempted to monopolize the markets for Type XI retroreflective sheeting and for broad high performance sheeting in violation of the Sherman Act, as well as other claims. Avery alleges that 3M manipulated the standards-setting process of the American Society for Testing and Materials (ASTM), a private organization responsible for creating standards for, among other things, retroreflective sheeting used for highway signage; entered into illegal and anticompetitive contracts; and engaged in other anticompetitive acts including false advertising and disparagement. 3M’s motion to transfer the antitrust case to the United States District Court for the District of Minnesota was granted in February 2011. 3M’s patent infringement lawsuit against Avery, the declaratory judgment action against Avery (with Avery’s patent infringement counterclaims), and Avery’s antitrust suit against 3M are moving forward in the Minnesota Court.

In March 2012, the district court issued its claim construction ruling in the 3M patent case, finding in 3M’s favor on 16 of the 19 disputed terms. Fact and expert discovery in that case have concluded and the parties are awaiting oral argument

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on pending motions for summary judgment on certain matters filed by both parties. Avery has sought reexamination of the five 3M patents in suit. The U.S. Patent and Trademark Office (US PTO) granted reexamination and issued a first Office Action rejecting all claims for two of the patents in suit. The US PTO denied in whole Avery’s request for reexamination of one of the patents in suit.

Fact discovery is also complete in the antitrust case and expert discovery is ongoing. Fact discovery is ongoing in the declaratory judgment case involving Avery’s patents and the parties are beginning the claim construction process. Avery filed a motion to join all three cases for trial, a motion that the Court denied. Accordingly, the 3M patent infringement case is expected to go to trial late in 2013.

3M sued TransWeb Corporation in Minnesota in 2010 for infringement of several 3M patents covering fluorination and hydrocharging of filter media used in 3M’s respirators and furnace filters. TransWeb does not make finished goods, but sells media to competitors of 3M’s respirator and furnace filter businesses. TransWeb filed a declaratory judgment action in and successfully moved the litigation to the United States District Court for the District of New Jersey, seeking a declaration of invalidity and non-infringement of 3M’s patents, and further alleging that 3M waited too long to enforce its rights. TransWeb also alleged 3M obtained the patents through inequitable conduct and that 3M’s attempt to enforce the patents constitutes a violation of the antitrust laws. On November 30, 2012, the jury returned a verdict in favor of TransWeb on all but one count, including findings that 3M’s patents were invalid and not infringed, and that 3M had committed an antitrust violation by seeking to enforce a patent it had obtained fraudulently. The jury also recommended that the court find 3M had committed inequitable conduct in obtaining the patents, and that the patents were therefore unenforceable. Since the vast majority of TransWeb’s claim for treble antitrust damages is in the form of its attorneys’ fees and expenses in connection with the defense of the patent case, the parties agreed that the measure of damages would not go to the jury, but rather would be submitted to a special master after the trial. It is expected this process will take several months, and the special master’s recommendations would then be forwarded to the court for review and entry of a final judgment. 3M intends to appeal.

In December 2010, Meda AB, the Swedish-based acquirer of 3M’s European pharmaceutical business, filed a lawsuit against 3M, 3M Innovative Properties Company, and Riker Laboratories, Inc. (collectively, “3M”). Meda initially asserted claims against 3M for breach of contract and breach of the implied covenant of good faith and fair dealing. In October 2011, Meda amended its pleading to assert a claim for fraud. All three claims are based on allegations that 3M did not inform Meda about certain information relating to the pricing of a particular drug in France prior to the acquisition. Meda seeks to recover compensatory damages in excess of $300 million (including prejudgment interest), punitive damages, and attorneys’ fees. In September 2012, 3M filed a motion for summary judgment on the grounds that Meda cannot establish a breach of any duty owed by 3M. A non-jury trial started in the United States District Court for the Southern District of New York in January 2013. The court is expected to issue its decision in the first quarter of 2013.

Shurtape Technologies, LLC sued 3M in the United States District Court for the Western District of North Carolina, alleging that 3M’s ScotchBlue™ Painter’s Masking Tape with Edge-Lock™ Paint Line Protector, which was introduced in late 2009, infringes Shurtape’s U.S. patent describing masking tape having an absorbent coating applied to the edge of the tape and several of Shurtape’s trademarks. 3M requested reexamination of the Shurtape patent, and in November 2012, the US PTO issued an office action adopting many of 3M’s invalidity arguments and rejecting all claims in the Shurtape patent. 3M has also filed a motion with the district court asking that the litigation be stayed pending resolution of the reexamination. Shurtape has opposed that motion and the court has not yet ruled. Trial is anticipated in late 2013 or early 2014.

For commercial litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company’s consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes that such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time.

Product Liability Litigation

Électricité de France (EDF) filed a lawsuit against 3M France in the French courts in 2006 claiming commercial loss and property damage after experiencing electrical network failures which EDF alleges were caused by so-called defective 3M transition splices. The French Court of Appeals at Versailles affirmed the commercial trial court’s decision that the transition splices conformed to contract specifications which were thoroughly analyzed and tested by EDF before purchase and installation. The Court of Appeals, however, ordered a court-appointed expert to study the problem and issue a technical opinion on the cause of the network failures. In spite of considerable testing of 3M’s splices over several years, the court-appointed expert has been unable to identify a defect in the 3M splices and to determine the definitive cause of the network failures. The court-appointed expert is expected to submit his final report to the commercial court by June 30, 2013. Thereafter, the commercial court may take from six months to one year to render its decision.

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One customer obtained an order in the French courts against 3M Purification SAS (a French subsidiary) in October 2011 appointing an expert to determine the amount of commercial loss and property damage allegedly caused by so-called defective 3M filters used in the customer’s manufacturing process. An Austrian subsidiary of this same customer also filed a claim against 3M Austria GmbH (an Austrian subsidiary) and 3M Purification SAS in the Austrian courts in September 2012 seeking damages for the same issue. Another customer filed a lawsuit against 3M Deutschland GmbH (a German subsidiary) in the German courts in March 2012 seeking commercial loss and property damage allegedly caused by so-called defective 3M filters used in that customer’s manufacturing process. The Company has resolved on an amicable basis claims of two other customers arising out of the same issue.

For product liability litigation matters described in this section for which a liability has been recorded, the Company believes the amount recorded is not material to the Company’s consolidated results of operations or financial condition. In addition, the Company is not able to estimate a possible loss or range of loss in excess of the established accruals at this time.

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NOTE 14. Stock-Based Compensation

The 3M 2008 Long-Term Incentive Plan provides for the issuance or delivery of up to 64 million shares of 3M common stock pursuant to awards granted under the plan. In May 2012, shareholders approved an additional 36 million shares, increasing the number of approved shares to 100 million shares. Awards under this plan may be issued in the form of Incentive Stock Options, Nonqualified Stock Options, Progressive Stock Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units, Other Stock Awards, and Performance Units and Performance Shares. Awards denominated in shares of common stock other than options and Stock Appreciation Rights, per the 2008 Plan, count against the 100 million share limit as 3.38 shares for every one share covered by such award (for full value awards with grant dates prior to May 11, 2010), as 2.87 shares for every one share covered by such award (for full value awards with grant dates on or after May 11, 2010 and prior to May 8, 2012), or as 3.50 shares for every one share covered by such award (for full value awards with grant dates of May 8, 2012 or later). The remaining total shares available for grant under the 2008 Long Term Incentive Plan Program are 48,786,751 as of December 31, 2012. There were approximately 11,564 participants with outstanding options, restricted stock, or restricted stock units at December 31, 2012.

The Company’s annual stock option and restricted stock unit grant is made in February to provide a strong and immediate link between the performance of individuals during the preceding year and the size of their annual stock compensation grants. The grant to eligible employees uses the closing stock price on the grant date. Stock options vest over a period from one to three years with the expiration date at 10 years from date of grant. Accounting rules require recognition of expense under a non-substantive vesting period approach, requiring compensation expense recognition when an employee is eligible to retire. Employees are considered eligible to retire at age 55 and after having completed five years of service. This retiree-eligible population represents 30 percent of the 2012 annual stock-based compensation award expense dollars; therefore, higher stock-based compensation expense is recognized in the first quarter. Beginning in 2007, the Company reduced the number of traditional stock options granted under the Management Stock Ownership Program (MSOP) plan by reducing the number of employees eligible to receive annual grants and by shifting a portion of the annual grant away from traditional stock options primarily to restricted stock units. However, associated with the reduction in the number of eligible employees, the Company provided a one-time “buyout” grant in 2007 of restricted stock units to the impacted employees. 3M also has granted progressive (reload) options. These options are nonqualified stock options that were granted to certain participants under the 1997 or 2002 MSOP, but for which the reload feature was eliminated in 2005 (on a prospective basis only). Participants who had options granted prior to this effective date may still qualify to receive new progressive (reload) stock options.

In addition to the annual grants, the Company makes other minor grants of stock options, restricted stock units and other stock-based grants. The Company issues cash settled Restricted Stock Units and Stock Appreciation Rights in certain countries. These grants do not result in the issuance of Common Stock and are considered immaterial by the Company.

Amounts recognized in the financial statements with respect to stock-based compensation programs, which include stock options, restricted stock, restricted stock units, performance shares, and the General Employees’ Stock Purchase Plan (GESPP), are provided in the following table. Capitalized stock-based compensation amounts were not material for the twelve months ended 2012, 2011 and 2010. The income tax benefits shown in the table can fluctuate by period due to the amount of employee “disqualifying dispositions” related to Incentive Stock Options (ISOs). The Company last granted ISOs in 2002.

Stock-Based Compensation Expense

	Years ended December 31
(Millions)	2012			2011			2010
Cost of sales	$	27		$	29		$	31
Selling, general and administrative expenses	167			192			209
Research, development and related expenses	29			32			34
Stock-based compensation expenses	$	223		$	253		$	274
Income tax benefits	$	(67	)	$	(80	)	$	(98	)
Stock-based compensation expenses, net of tax	$	156		$	173		$	176

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The following table summarizes stock option activity during the twelve months ended December 31:

Stock Option Program

	2012				2011				2010
	Number of Options		Weighted Average Exercise Price		Number of Options		Weighted Average Exercise Price		Number of Options		Weighted Average Exercise Price
Under option — January 1	64,148,415		$	77.28	70,335,044		$	74.80	74,268,165		$	72.39
Granted:
Annual	5,770,190		87.91		5,514,500		89.46		5,788,313		78.79
Progressive (Reload)	110,065		89.65		237,839		94.02		188,105		88.67
Other	51,661		89.25		8,953		86.71		27,911		82.13
Exercised	(13,123,617	)	68.78		(11,625,863	)	68.47		(9,678,654	)	59.11
Canceled	(391,684	)	83.65		(322,058	)	75.09		(258,796	)	70.76
December 31	56,565,030		$	80.33	64,148,415		$	77.28	70,335,044		$	74.80
Options exercisable
December 31	45,207,143		$	78.78	52,644,364		$	76.90	58,201,617		$	75.87

Outstanding options under grant include grants from previous plans. For options outstanding at December 31, 2012, the weighted-average remaining contractual life was 55 months and the aggregate intrinsic value was $709 million. For options exercisable at December 31, 2012, the weighted-average remaining contractual life was 44 months and the aggregate intrinsic value was $637 million. As of December 31, 2012, there was $54 million of compensation expense that has yet to be recognized related to non-vested stock option based awards. This expense is expected to be recognized over the remaining weighted-average vesting period of 21 months.

The total intrinsic values of stock options exercised during 2012, 2011 and 2010 was $282 million, $287 million and $263 million, respectively. Cash received from options exercised during 2012, 2011 and 2010 was $903 million, $796 million and $571 million, respectively. The Company’s actual tax benefits realized for the tax deductions related to the exercise of employee stock options for 2012, 2011 and 2010 was $98 million, $96 million and $93 million, respectively.

The Company does not have a specific policy to repurchase common shares to mitigate the dilutive impact of options; however, the Company has historically made adequate discretionary purchases, based on cash availability, market trends, and other factors, to satisfy stock option exercise activity.

For annual and progressive (reload) options, the weighted average fair value at the date of grant was calculated using the Black-Scholes option-pricing model and the assumptions that follow.

Stock Option Assumptions

	Annual									Progressive (Reload)
	2012			2011			2010			2012			2011			2010
Exercise price	$	87.89		$	89.47		$	78.72		$	87.89		$	93.94		$	86.72
Risk-free interest rate	1.1		%	2.8		%	2.8		%	0.2		%	0.4		%	0.6		%
Dividend yield	2.6		%	2.6		%	2.5		%	2.6		%	2.6		%	2.5		%
Volatility	24.5		%	22.0		%	25.7		%	23.4		%	21.5		%	33.2		%
Expected life (months)	74			72			72			19			15			17
Black-Scholes fair value	$	14.94		$	16.10		$	16.50		$	8.50		$	7.49		$	12.01

Expected volatility is a statistical measure of the amount by which a stock price is expected to fluctuate during a period. For the 2012 annual grant date, the Company estimated the expected volatility based upon the average of the most recent one year volatility, the median of the term of the expected life rolling volatility, the median of the most recent term of the expected life volatility of 3M stock, and the implied volatility on the grant date. The expected term assumption is based on the weighted average of historical grants.

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The following table summarizes restricted stock and restricted stock unit activity during the twelve months ended December 31, 2012:

Restricted Stock and Restricted Stock Units

	2012				2011				2010
	Number of Awards		Weighted Average Grant Date Fair Value		Number of Awards		Weighted Average Grant Date Fair Value		Number of Awards		Weighted Average Grant Date Fair Value
Nonvested balance — As of January 1	4,858,972		$	73.02	4,812,657		$	68.75	4,379,480		$	68.85
Granted
Annual	968,522		87.92		889,448		89.46		902,549		78.81
Other	99,337		85.07		351,624		87.07		527,823		70.09
Vested	(2,594,468	)	63.51		(1,077,816	)	72.21		(948,233	)	79.12
Forfeited	(70,801	)	82.65		(116,941	)	72.01		(48,962	)	76.22
As of December 31	3,261,562		$	85.17	4,858,972		$	73.02	4,812,657		$	68.75

As of December 31, 2012, there was $79 million of compensation expense that has yet to be recognized related to non-vested restricted stock and restricted stock units. This expense is expected to be recognized over the remaining weighted-average vesting period of 25 months. The total fair value of restricted stock and restricted stock units that vested during the twelve months ended December 31, 2012, 2011 and 2010 was $228 million, $102 million and $75 million, respectively. The Company’s actual tax benefits realized for the tax deductions related to the vesting of restricted stock and restricted stock units for the twelve months ended December 31, 2012, 2011 and 2010 was $86 million, $36 million and $20 million, respectively.

Restricted stock units granted under the 3M 2008 Long-Term Incentive Plan generally vest three years following the grant date assuming continued employment. The one-time “buyout” restricted stock unit grant in 2007 vested at the end of five years. Restricted stock unit grants issued in 2008 and prior did not accrue dividends during the vesting period. Beginning in 2009, dividend equivalents equal to the dividends payable on the same number of shares of 3M common stock accrue on these restricted stock units during the vesting period, although no dividend equivalents are paid on any of these restricted stock units that are forfeited prior to the vesting date. Dividends are paid out in cash at the vest date on restricted stock units, except for performance shares which do not earn dividends. Since the rights to dividends are forfeitable, there is no impact on basic earnings per share calculations. Weighted average restricted stock unit shares outstanding are included in the computation of diluted earnings per share.

Performance Shares

Beginning in 2008, the Company grants certain members of executive management performance shares on an annual basis. The performance criteria, which were modified in 2010, are designed to focus management attention on three key factors that create long-term stockholder value: Organic Sales Volume Growth, Return on Invested Capital and sales from new products. The number of shares of 3M common stock that could actually be delivered at the end of the three-year performance period may be anywhere from 0% to 200% of each performance share granted, depending on the performance of the Company during such performance period. Non-substantive vesting requires that expense for the performance shares be recognized over one or three years depending on when each individual became a 3M executive. The first performance shares, which were granted in 2008, were distributed in 2011. Performance shares do not accrue dividends during the performance period. Therefore, the grant date fair value is determined by reducing the closing stock price on the date of grant by the net present value of dividends during the performance period. As a result of the significant uncertainty due to the economic crisis of 2008-2009, the Company granted restricted stock units instead of performance shares in 2009. Therefore, since there were no performance shares in 2009, there were also no related distributions in 2012. Performance share grants resumed in 2010 and continued thereafter.

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The following table summarizes performance share activity during the twelve months ended December 31, 2012:

	2012				2011				2010
			Weighted				Weighted				Weighted
			Average				Average				Average
	Number of		Grant Date		Number of		Grant Date		Number of		Grant Date
	Awards		Fair Value		Awards		Fair Value		Awards		Fair Value
Undistributed balance — As of January 1	878,872		$	78.55	760,645		$	73.99	—		$	—
Granted	467,531		81.55		415,024		84.58		370,575		74.46
Distributed	—		—		(206,410	)	72.77		—		—
Performance change	(178,838	)	81.27		(39,323	)	82.10		396,390		73.55
Forfeited	(78,481	)	80.21		(51,064	)	80.20		(6,320	)	73.92
As of December 31	1,089,084		$	79.27	878,872		$	78.55	760,645		$	73.99

As of December 31, 2012, there was $11 million of compensation expense that has yet to be recognized related to performance shares. This expense is expected to be recognized over the remaining weighted-average earnings period of 11 months. There were no performance shares distributed or related tax benefits realized during the twelve months ended December 31, 2012 and 2010. For the twelve months ended December 31, 2011, the total fair value of performance shares that were distributed was $18 million and actual tax benefits realized for the tax deductions related to the distribution of performance shares was $5 million.

General Employees’ Stock Purchase Plan (GESPP):

In May 2012, shareholders approved an additional 30 million shares for issuance under the Company’s GESPP, increasing the number of approved shares to 60 million shares. Substantially all employees are eligible to participate in the plan. Participants are granted options at 85% of market value at the date of grant. There are no GESPP shares under option at the beginning or end of each year because options are granted on the first business day and exercised on the last business day of the same month.

General Employees’ Stock Purchase Plan

	2012				2011				2010
	Shares		Weighted Average Exercise Price		Shares		Weighted Average Exercise Price		Shares		Weighted Average Exercise Price
Options granted	1,455,545		$	75.32	1,433,609		$	73.67	1,325,579		$	70.57
Options exercised	(1,455,545	)	75.32		(1,433,609	)	73.67		(1,325,579	)	70.57
Shares available for grant - December 31	31,445,207				2,900,751				4,334,360

The weighted-average fair value per option granted during 2012, 2011 and 2010 was $13.29, $13.00 and $12.45, respectively. The fair value of GESPP options was based on the 15% purchase price discount. The Company recognized compensation expense for GESSP options of $19 million in 2012, $19 million in 2011 and $17 million in 2010.

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NOTE 15. Business Segments

3M’s businesses are organized, managed and internally grouped into segments based on differences in markets, products, technologies and services. Effective in the first quarter of 2013 (as discussed below), 3M manages its operations in five operating business segments: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. 3M’s five business segments bring together common or related 3M technologies, enhancing the development of innovative products and services and providing for efficient sharing of business resources. These segments have worldwide responsibility for virtually all 3M product lines. 3M is not dependent on any single product/service or market. Transactions among reportable segments are recorded at cost. 3M is an integrated enterprise characterized by substantial intersegment cooperation, cost allocations and inventory transfers. Therefore, management does not represent that these segments, if operated independently, would report the operating income information shown. The difference between operating income and pre-tax income relates to interest income and interest expense, which are not allocated to business segments.

Effective in the first quarter of 2013, 3M completed a realignment of its business groups (segments) to better serve global markets and customers. This realignment included:

·The alignment of divisions into five business groups (segments) as further described below.

·The combination of certain existing divisions into new divisions. These included Traffic Safety and Security Division (reflecting the combination of the former Traffic Safety Systems Division and Security Systems Division) and the Optical Systems Division (reflecting the combination of the former Optical Systems Division and Mobile Interactive Solutions Division).

·The movement of certain product lines between various divisions within and across certain business segments.

In addition to the above, there were also changes to dual credit amounts as a result of the realigned structure. The new structure is comprised of five business segments: Industrial, Safety and Graphics, Electronics and Energy, Health Care, and Consumer.

Industrial: This business segment, previously referred to as Industrial and Transportation, is largely unchanged, except for the transfer of the Renewable Energy Division to the Electronics and Energy business segment.

Safety and Graphics: This business segment includes Architectural Markets, Building and Commercial Services, Commercial Graphics, Industrial Mineral Products, Personal Safety, and Traffic Safety and Security. This new business segment also reflects movement of certain product lines between various divisions.

Electronics and Energy: This business segment includes Communication Markets, Electrical Markets, Electronics Markets Materials, Electronic Solutions, Infrastructure Protection, Optical Systems, Renewable Energy, and 3M Touch Systems. This new business segment also reflects the movement of certain product lines between various divisions.

Health Care: This business segment is largely unchanged, except for the movement of certain product lines between various divisions.

Consumer: This business segment, previously referred to as Consumer and Office, is largely unchanged, except for the movement of certain product lines between various divisions.

The financial information presented herein reflects the impact of all of the preceding segment structure changes for all periods presented.

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Business Segment Products

Business Segment	Major Products
Industrial	Tapes, coated and nonwoven abrasives, adhesives, specialty materials, filtration products, closure systems for personal hygiene products, acoustic systems products, automotive components, abrasion-resistant films, structural adhesives and paint finishing and detailing products
Safety and Graphics	Personal protection products, traffic safety and security products, commercial graphics systems, commercial cleaning and protection products, floor matting, roofing granules for asphalt shingles, and track and trace solutions
Electronics and Energy	Optical films solutions for electronic displays, projection solutions, packaging and interconnection devices, insulating and splicing solutions for the electronics, telecommunications and electrical industries, touch screens and touch monitors, renewable energy component solutions, and infrastructure protection products
Health Care	Medical and surgical supplies, skin health and infection prevention products, drug delivery systems, dental and orthodontic products, health information systems and food safety products
Consumer	Sponges, scouring pads, high-performance cloths, consumer and office tapes, repositionable notes, indexing systems, construction and home improvement products, home care products, protective material products, and consumer and office tapes and adhesives

Business Segment Information

	Net Sales									Operating Income
(Millions)	2012			2011			2010			2012			2011			2010
Industrial	$	9,943		$	9,629		$	8,116		$	2,236		$	1,983		$	1,720
Safety and Graphics	5,471			5,458			4,873			1,217			1,237			1,138
Electronics and Energy	5,458			5,732			5,632			1,026			1,140			1,207
Health Care	5,138			5,011			4,492			1,641			1,484			1,357
Consumer	4,386			4,230			3,926			943			855			859
Corporate and Unallocated	4			9			11			(471		)	(420		)	(278		)
Elimination of Dual Credit	(496		)	(458		)	(388		)	(109		)	(101		)	(85		)
Total Company	$	29,904		$	29,611		$	26,662		$	6,483		$	6,178		$	5,918

	Assets						Depreciation & Amortization						Capital Expenditures
(Millions)	2012		2011		2010		2012		2011		2010		2012		2011		2010
Industrial	$	8,587	$	7,553	$	6,486	$	323	$	337	$	312	$	415	$	383	$	304
Safety and Graphics	5,111		4,975		4,979		238		251		225		190		204		157
Electronics and Energy	5,512		5,296		5,196		266		255		243		350		274		293
Health Care	4,296		4,190		4,181		169		199		130		113		159		78
Consumer	2,445		2,423		2,169		110		102		101		105		98		70
Corporate and Unallocated	7,925		7,179		7,145		182		92		109		311		261		189
Total Company	$	33,876	$	31,616	$	30,156	$	1,288	$	1,236	$	1,120	$	1,484	$	1,379	$	1,091

Corporate and unallocated operating income includes a variety of miscellaneous items, such as corporate investment gains and losses, certain derivative gains and losses, certain insurance-related gains and losses, certain litigation and environmental expenses, corporate restructuring charges and certain under- or over-absorbed costs (e.g. pension, stock-based compensation) that the Company may choose not to allocate directly to its business segments. Because this category includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis.

3M business segment reporting measures include dual credit to business segments for certain U.S. sales and related operating income. Management evaluates each of its five operating business segments based on net sales and operating income performance, including dual credit U.S. reporting to further incentivize U.S. sales growth. As a result, 3M provides additional (“dual”) credit to those business segments selling products in the U.S. to an external customer when that segment is not the primary seller of the product. For example, certain respirators are primarily sold by the Personal Safety Division within the Safety and Graphics business segment; however, the Industrial business segment also sells this product to certain customers in its U.S. markets. In this example, the non-primary selling segment (Industrial) would also

115

receive credit for the associated net sales it initiated and the related approximate operating income. The assigned operating income related to dual credit activity may differ from operating income that would result from actual costs associated with such sales. The offset to the dual credit business segment reporting is reflected as a reconciling item entitled “Elimination of Dual Credit,” such that sales and operating income for the U.S. in total are unchanged.

NOTE 16.  Geographic Areas

Geographic area information is used by the Company as a secondary performance measure to manage its businesses. Export sales and certain income and expense items are generally reported within the geographic area where the final sales to 3M customers are made. During the first quarter of 2013, 3M realigned its geographic area reporting to include Puerto Rico in the United States, rather than in the Latin America/Canada region. The financial information presented herein reflects this geographic area change for all periods presented.

	Net Sales									Operating Income									Property, Plant and Equipment - net
(Millions)	2012			2011			2010			2012			2011			2010			2012		2011
United States	$	10,571		$	10,071		$	9,254		$	1,938		$	1,639		$	1,647		$	4,279	$	3,980
Asia Pacific	9,092			9,108			8,259			2,450			2,523			2,400			2,029		1,887
Europe, Middle East and Africa	6,730			7,076			6,259			1,163			1,150			1,112			1,499		1,271
Latin America and Canada	3,529			3,368			2,906			936			886			787			571		528
Other Unallocated	(18		)	(12		)	(16		)	(4		)	(20		)	(28		)	—		—
Total Company	$	29,904		$	29,611		$	26,662		$	6,483		$	6,178		$	5,918		$	8,378	$	7,666

NOTE 17.  Quarterly Data (Unaudited)

(Millions, except per-share amounts)	First		Second		Third		Fourth		Year
2012	Quarter		Quarter		Quarter		Quarter		2012
Net sales	$	7,486	$	7,534	$	7,497	$	7,387	$	29,904
Cost of sales	3,889		3,870		3,935		3,991		15,685
Net income including noncontrolling interest	1,141		1,186		1,180		1,004		4,511
Net income attributable to 3M	1,125		1,167		1,161		991		4,444
Earnings per share attributable to 3M
common shareholders - basic	1.61		1.68		1.68		1.43		6.40
Earnings per share attributable to 3M
common shareholders - diluted	1.59		1.66		1.65		1.41		6.32

(Millions, except per-share amounts)	First		Second		Third		Fourth		Year
2011	Quarter		Quarter		Quarter		Quarter		2011
Net sales	$	7,311	$	7,680	$	7,531	$	7,089	$	29,611
Cost of sales	3,802		4,040		4,027		3,824		15,693
Net income including noncontrolling interest	1,103		1,177		1,103		974		4,357
Net income attributable to 3M	1,081		1,160		1,088		954		4,283
Earnings per share attributable to 3M
common shareholders - basic	1.52		1.63		1.54		1.36		6.05
Earnings per share attributable to 3M
common shareholders - diluted	1.49		1.60		1.52		1.35		5.96

Gross profit is calculated as net sales minus cost of sales.

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XML

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements

Fair Value, Assets and Liabilities Measured on Recurring Basis

						Fair Value Measurements
(Millions)				Fair Value at		Using Inputs Considered as
Description				Dec. 31, 2012		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
	Marketable securities:
		U.S. government agency securities		$	287	$	―	$	287	$	―
		Foreign government agency securities			67		―		67		―
		Corporate debt securities			965		―		965		―
		Certificates of deposit/time deposits			41		―		41		―
		Commercial paper			116		―		116		―
		Asset-backed securities:
			Automobile loan related		942		―		942		―
			Credit card related		157		―		157		―
			Equipment lease related		90		―		90		―
			Other		39		―		39		―
		U.S. treasury securities			72		72		―		―
		U.S. municipal securities			27		―		27		―
		Auction rate securities			7		―		―		7
	Investments				3		3		―		―
Derivative instruments — assets:
	Foreign currency forward/option contracts				49		49		―		―
	Interest rate swap contracts				23		―		23		―
Liabilities:
Derivative instruments — liabilities:
	Foreign currency forward/option contracts				105		104		1		―
	Commodity price swap contracts				1		1		―		―

						Fair Value Measurements
(Millions)				Fair Value at		Using Inputs Considered as
Description				Dec. 31, 2011		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
	Marketable securities:
		U.S. government agency securities		$	480	$	―	$	480	$	―
		Foreign government agency securities			23		―		23		―
		Corporate debt securities			668		―		668		―
		Certificates of deposit/time deposits			49		―		49		―
		Commercial paper			30		―		30		―
		Asset-backed securities:
			Automobile loan related		718		―		718		―
			Credit card related		268		―		268		―
			Equipment lease related		64		―		64		―
			Other		5		―		5		―
		U.S. treasury securities			34		34		―		―
		U.S. municipal securities			14		―		14		―
		Auction rate securities			4		―		―		4
	Investments				4		4		―		―
Derivative instruments — assets:
	Foreign currency forward/option contracts				107		98		9		―
	Interest rate swap contracts				28		―		28		―
Liabilities:
Derivative instruments — liabilities:
	Foreign currency forward/option contracts				42		42		―		―
	Commodity price swap contracts				7		7		―		―

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

(Millions)
Marketable securities – auction rate securities only		2012		2011		2010
Beginning balance		$	4	$	7	$	5
Total gains or losses:
	Included in earnings		―		―		―
	Included in other comprehensive income		3		(3)		2
Purchases, issuances, and settlements			―		―		―
Transfers in and/or out of Level 3			―		―		―
Ending balance (December 31)			7		4		7
Additional losses included in earnings due to reclassifications from
	other comprehensive income for:
	Securities sold during the period ended December 31		―		―		―
	Securities still held at December 31		―		―		―

Fair Value of Financial Instruments by Balance Sheet Grouping

	December 31, 2012					December 31, 2011
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	4,916	$	5,363	$	4,484	$	5,002

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Supplemental Equity and Comprehensive Income Information (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Supplemental Equity and Comprehensive Income Information
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,000,000,000
Common stock, shares issued (in shares)	944,033,056	944,033,056
Treasury stock (in shares)	256,941,406	249,063,015	232,055,448	233,433,937
Preferred stock, shares authorized	10,000,000

XML

Acquisitions (Details) In Millions, unless otherwise specified	12 Months Ended												3 Months Ended	12 Months Ended						1 Months Ended	12 Months Ended	1 Months Ended			12 Months Ended
	Dec. 31, 2012 USD ($) Acquisition	Dec. 31, 2011 USD ($) Acquisition	Dec. 31, 2010 USD ($) Acquisition	Dec. 31, 2012 Maximum	Dec. 31, 2011 Maximum	Dec. 31, 2010 Maximum	Dec. 31, 2012 Minimum	Dec. 31, 2011 Minimum	Dec. 31, 2010 Minimum	Dec. 31, 2012 Weighted Average	Dec. 31, 2011 Weighted Average	Dec. 31, 2010 Weighted Average	Mar. 31, 2011 Winterthur Technologie AG	Dec. 31, 2011 Winterthur Technologie AG USD ($)	Dec. 31, 2012 Other Acquisitions USD ($)	Dec. 31, 2011 Other Acquisitions USD ($)	Dec. 31, 2010 Other Acquisitions USD ($)	Dec. 31, 2010 Arizant Inc. USD ($)	Dec. 31, 2010 Attenti Holdings S. A. USD ($)	Oct. 31, 2010 Cogent Inc. USD ($)	Dec. 31, 2010 Cogent Inc. USD ($)	Oct. 31, 2010 A-One	Apr. 30, 2010 A-One USD ($)	Apr. 30, 2010 A-One JPY (¥)	Dec. 31, 2012 Federal Signal Technologies Group USD ($)	Dec. 31, 2012 Ceradyne Inc. USD ($)
Business Acquisitions Information
Accounts receivable	$ 84	$ 106	$ 93											$ 45	$ 29	$ 61	$ 21	$ 15	$ 23		$ 34					$ 55
Inventory	125	128	77											69	13	59	19	36	5		17					112
Other current assets	37	42	43											6	1	36	2	3	7		31					36
Marketable securities	250		380												0		0	0	0		380					250
Property, plant, and equipment	241	175	106											73	3	102	29	38	9		30					238
Purchased finite-lived intangible assets	213	342	663											226	86	116	69	362	90		142					127
Purchased indefinite-lived intangible assets	2														2											0
Purchased goodwill	339	259	980											147	141	112	51	512	122		295					198
Accounts payable and other liabilities, net of other assets	(127)	(148)	(164)											(70)	(27)	(78)	(35)	(29)	(12)		(88)					(100)
Interest bearing debt	(96)	(103)	(105)											(79)	(3)	(24)	(53)	(31)	(21)		0					(93)
Deferred tax asset/(liability)	(22)	(86)	(225)											(58)	3	(28)	(21)	(141)	(16)		(47)					(25)
Net assets acquired	1,046	715	1,848											359	248	356	82	765	207		794					798
Noncontrolling interest		(56)												(56)		0
Net assets acquired excluding noncontrolling interest		659												303		356
Supplemental information:
Cash paid	1,098	703	2,105											327	248	376	156	776	227		946					850
Less: Cash acquired	52	54	275											34	0	20	92	11	20		152					52
Cash paid, net of cash acquired	1,046	649	1,830											293	248	356	64	765	207		794				104	798
Non-cash		10	18											10		0	18	0	0		0
Net assets acquired excluding noncontrolling interest		659												303		356
Number of business combinations completed	3	9	10
Percentage of subsidiary share's owned by entity on the business acquisition date (as a percent)													86.00%
Percentage of subsidiary share's owned by entity as of balance sheet date (as a percent)														100.00%
Five-year financed liability of 1.7 billion in Japanese Yen (approximately $18 million in USD)																							18	1,700
Term of financed liability																							5 years	5 years
Embedded mirroring put and call options with respect to remaining minority shares, term (in years)																						5 years
Purchase price paid to acquire remaining noncontrolling interest																				248
Acquired cash and marketable securities																				$ 532
Interest rate related to five-year financed liability																							1.00%	1.00%
Finite Lived Intangible Assets
Acquired finite-lived intangible assets, life				20 years	20 years	17 years	2 years	3 years	2 years	12 years	14 years	11 years

XML

Long-Term Debt and Short-Term Borrowings (Details 2)				1 Months Ended		1 Months Ended						3 Months Ended	12 Months Ended	1 Months Ended					1 Months Ended										1 Months Ended
	Sep. 30, 2011 USD ($)	Jun. 30, 2007 USD ($)	Dec. 31, 2003 USD ($)	Jul. 31, 2007 Eurobond 750 Million Euros Issued July2007 EUR (€)	Aug. 31, 2010 Eurobond 750 Million Euros Issued July2007 EUR (€)	Dec. 31, 2007 Eurobond 275 Million Euros Issued December2007	Sep. 30, 2011 Fixed rate Medium-term note due 2016	Jun. 30, 2012 Fixed rate Medium-term note due 2017	Jun. 30, 2012 Fixed rate Medium-term note due 2022	Aug. 31, 2008 Fixed rate Medium-term note due 2013	Oct. 31, 2008 Floating rate Medium-term note which matured in 2011	Dec. 31, 2011 Floating rate Medium-term note which matured in 2011 USD ($)	Dec. 31, 2012 Floating rate notes due in 2027, 2040 and 2041	Mar. 31, 2007 Fixed rate 30-year bond due 2037	Dec. 31, 2012 Fixed rate Medium-term note which matured in 2012 USD ($)	Dec. 31, 2007 Fixed rate Medium-term note which matured in 2012	Dec. 31, 2004 Floating rate note due 2044	Dec. 31, 2012 Floating rate note due 2044	Dec. 31, 2012 Five-year credit facility agreement USD ($)	Sep. 30, 2012 Five-year credit facility agreement	Nov. 30, 2009 Fixed rate note which matured in November 2009 USD ($)	Nov. 30, 2006 Fixed rate note which matured in November 2009	Dec. 31, 2012 One-year credit facility agreement with HSBC Bank USA USD ($)	Sep. 30, 2012 One-year credit facility agreement with HSBC Bank USA USD ($)	Aug. 31, 2011 One-year credit facility agreement with HSBC Bank USA USD ($)	Dec. 31, 2012 Stand alone letters of credit USD ($)	Dec. 31, 2012 International lines of credit USD ($)	Dec. 31, 2012 United States lines of credit with other banking partners USD ($)	Dec. 31, 2012 Three-year credit facility agreement with JP Morgan Chase Bank USD ($)	Dec. 31, 2012 Three-year credit facility agreement with JP Morgan Chase Bank GBP (£)
Long-Term Debt
Repayment of debt												$ 800,000,000			$ 500,000,000						$ 400,000,000
Term of debt instrument				7 years		7 years	5 years	5 years	10 years	5 years	3 years			30 years		5 years	40 years					3 years
Medium-term notes program established in connection with a "well-known seasoned issuer" shelf registration	3,000,000,000	3,000,000,000	1,500,000,000
Interest rate - stated				5.00%		5.00%	1.375%	1.00%	2.00%	4.375%	4.50%			5.70%		4.65%
Number of debt securities issued under the medium-term notes program		3
Repurchase price of notes until 2013 - low end of range																		98.00%
Repurchase price of notes until 2013 - high end of range																		99.00%
Repurchase price of notes from 2014 to maturity																		100.00%
Notional amount of interest rate, fair value hedge derivatives				400,000,000								800,000,000
Termination of notional amount of fixed-to-floating interest rate swap					150,000,000
Notional amount remaining after partial termination of fixed-to-floating interest rate swap					250,000,000
Number of years after date of issuance that put options commence													10 years
Number of years after put options commence when additional put options occur on each anniversary thereafter until final maturity													3 years
Repurchase price of notes according to redemption schedule - low end of range (as a percent)													99.00%
Repurchase price of notes according to redemption schedule - high end of range (as a percent)													100.00%
Line of Credit Facility
Term of credit facility																				5 years				1 year	1 year				3 years	3 years
Current borrowing capacity																			1,500,000,000					150,000,000	200,000,000				106,000,000	66,000,000
Maximum increase available subject to lender approval																			500,000,000
Maximum borrowing capacity including portion subject to lender approval																			2,000,000,000
Amount of letters of credit outstanding utilized in connection with normal business activities																							$ 121,000,000			$ 100,000,000	$ 37,000,000	$ 6,000,000	$ 106,000,000	£ 66,000,000
Required minimum EBITDA to Interest Ratio																			3				3
Actual EBITDA to Interest Ratio																			45				45
Number of consecutive quarters over which the ratio of required EBITDA to Interest Ratio is calculated																			4				4

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Supplemental Equity and Comprehensive Income Information (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income Loss [RollForward]
Balance at Beginning of Period	$ (5,025)	$ (3,543)	$ (3,754)
Other comprehensive income (loss), before tax:
Amounts before reclassification	(75)	(2,765)	(165)
Amounts reclassifed out	556	619	321
Total other comprehensive income (loss), before tax	481	(2,146)	156
Tax effect	(206)	664	16
Total other comprehensive income (loss), net of tax	275	(1,482)	172
Purchase of subsidiary shares, net of tax			39
Balance at End of Period	(4,750)	(5,025)	(3,543)
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income Loss [RollForward]
Balance at Beginning of Period	114	374	122
Other comprehensive income (loss), before tax:
Amounts before reclassification	133	(253)	213
Amounts reclassifed out	0	0	0
Total other comprehensive income (loss), before tax	133	(253)	213
Tax effect	(17)	(7)	(8)
Total other comprehensive income (loss), net of tax	116	(260)	205
Purchase of subsidiary shares, net of tax			47
Balance at End of Period	230	114	374
Defined Benefit Pension and Postretirement Plans Adjustment
Accumulated Other Comprehensive Income Loss [RollForward]
Balance at Beginning of Period	(5,155)	(3,879)	(3,831)
Other comprehensive income (loss), before tax:
Amounts before reclassification	(204)	(2,452)	(374)
Amounts reclassifed out	615	475	306
Total other comprehensive income (loss), before tax	411	(1,977)	(68)
Tax effect	(211)	701	28
Total other comprehensive income (loss), net of tax	200	(1,276)	(40)
Purchase of subsidiary shares, net of tax			(8)
Balance at End of Period	(4,955)	(5,155)	(3,879)
Debt and Equity Securities, Unrealized Gain (Loss)
Accumulated Other Comprehensive Income Loss [RollForward]
Balance at Beginning of Period	(6)	(6)	(9)
Other comprehensive income (loss), before tax:
Amounts before reclassification	6	(10)	5
Amounts reclassifed out	0	10	0
Total other comprehensive income (loss), before tax	6	0	5
Tax effect	(2)	0	(2)
Total other comprehensive income (loss), net of tax	4	0	3
Purchase of subsidiary shares, net of tax			0
Balance at End of Period	(2)	(6)	(6)
Cash Flow Hedging Instruments, Unrealized Gain (Loss)
Accumulated Other Comprehensive Income Loss [RollForward]
Balance at Beginning of Period	22	(32)	(36)
Other comprehensive income (loss), before tax:
Amounts before reclassification	(10)	(50)	(9)
Amounts reclassifed out	(59)	134	15
Total other comprehensive income (loss), before tax	(69)	84	6
Tax effect	24	(30)	(2)
Total other comprehensive income (loss), net of tax	(45)	54	4
Purchase of subsidiary shares, net of tax			0
Balance at End of Period	$ (23)	$ 22	$ (32)

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Derivatives (Details) (USD $)	1 Months Ended		12 Months Ended																					1 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended
	Sep. 30, 2011 Fixed rate Medium-term note due 2016	Dec. 31, 2012 Fixed rate Medium-term note due 2016	Dec. 31, 2012 Cash flow hedge	Dec. 31, 2011 Cash flow hedge	Dec. 31, 2010 Cash flow hedge	Dec. 31, 2012 Cash flow hedge Foreign currency forward/option contracts	Dec. 31, 2011 Cash flow hedge Foreign currency forward/option contracts	Dec. 31, 2010 Cash flow hedge Foreign currency forward/option contracts	Dec. 31, 2012 Cash flow hedge Foreign currency forward/option contracts Cost of sales	Dec. 31, 2011 Cash flow hedge Foreign currency forward/option contracts Cost of sales	Dec. 31, 2010 Cash flow hedge Foreign currency forward/option contracts Cost of sales	Dec. 31, 2012 Cash flow hedge Foreign currency forward contracts	Dec. 31, 2011 Cash flow hedge Foreign currency forward contracts	Dec. 31, 2010 Cash flow hedge Foreign currency forward contracts	Dec. 31, 2012 Cash flow hedge Foreign currency forward contracts Interest expense	Dec. 31, 2011 Cash flow hedge Foreign currency forward contracts Interest expense	Dec. 31, 2010 Cash flow hedge Foreign currency forward contracts Interest expense	Dec. 31, 2012 Cash flow hedge Commodity price swap contracts	Dec. 31, 2011 Cash flow hedge Commodity price swap contracts	Dec. 31, 2010 Cash flow hedge Commodity price swap contracts	Dec. 31, 2012 Cash flow hedge Commodity price swap contracts Cost of sales	Dec. 31, 2011 Cash flow hedge Commodity price swap contracts Cost of sales	Dec. 31, 2010 Cash flow hedge Commodity price swap contracts Cost of sales	Aug. 31, 2011 Cash flow hedge Interest rate swap contracts	Dec. 31, 2012 Cash flow hedge Interest rate swap contracts	Dec. 31, 2011 Cash flow hedge Interest rate swap contracts	Dec. 31, 2010 Cash flow hedge Interest rate swap contracts	Aug. 31, 2011 Cash flow hedge Interest rate swap contracts Fixed rate Medium-term note due 2016	Dec. 31, 2012 Cash flow hedge Interest rate swap contracts Interest expense	Dec. 31, 2011 Cash flow hedge Interest rate swap contracts Interest expense	Dec. 31, 2010 Cash flow hedge Interest rate swap contracts Interest expense
Derivatives in Cash Flow Hedging Relationships
Maximum length of time hedged in cash flow hedge						12 months												12 months
Dollar equivalent gross notional amount, foreign exchange forward and option contracts designated as cash flow hedges						$ 5,800,000,000
Dollar equivalent gross notional amount, natural gas commodity price swaps designated as cash flow hedges																		18,000,000
Dollar equivalent gross notional amount, forecasted debt issuance contracts designated as cash flow hedges																								400,000,000
Principal amount		1,000,000,000																										1,000,000,000
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative			(10,000,000)	(50,000,000)	(9,000,000)	(35,000,000)	3,000,000	(30,000,000)				29,000,000	(42,000,000)	34,000,000				(4,000,000)	(4,000,000)	(13,000,000)				(7,000,000)	0	(7,000,000)
Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			59,000,000	(134,000,000)	(15,000,000)				41,000,000	(87,000,000)	(39,000,000)				29,000,000	(41,000,000)	33,000,000				(10,000,000)	(6,000,000)	(9,000,000)				0		(1,000,000)	0	0
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges			(23,000,000)																					(4,000,000)	(3,000,000)
The time period estimated for the anticipated transfer of gains (losses), net from accumulated other comprehensive income into earnings			12 months
Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income			$ 0	$ 0	$ 0				$ 0	$ 0	$ 0				$ 0	$ 0	$ 0				$ 0	$ 0	$ 0						$ 0
Term of debt instrument	5 years																											5 years
Term of interest rate swap																								5 years

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Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2012
Buildings and improvements | Maximum
Property, plant and equipment - at cost
Estimated useful life	40 years
Estimated useful life, majority of the assets	40 years
Buildings and improvements | Minimum
Property, plant and equipment - at cost
Estimated useful life	10 years
Estimated useful life, majority of the assets	20 years
Machinery and equipment | Maximum
Property, plant and equipment - at cost
Estimated useful life	15 years
Estimated useful life, majority of the assets	10 years
Machinery and equipment | Minimum
Property, plant and equipment - at cost
Estimated useful life	3 years
Estimated useful life, majority of the assets	5 years
Internal use software | Maximum
Property, plant and equipment - at cost
Estimated useful life	7 years
Internal use software | Minimum
Property, plant and equipment - at cost
Estimated useful life	3 years

XML

Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information

Supplemental Cash Flow Information

(Millions)	2012		2011		2010
Cash income tax payments, net of refunds	$	1,717	$	1,542	$	1,509
Cash interest payments		166		219		178
Capitalized interest		23		19		17

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Derivatives (Details 2) In Millions, unless otherwise specified		1 Months Ended						1 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2012 Fixed rate Eurobond Due 2014 EUR (€)	Oct. 31, 2008 Floating rate Medium-term note which matured in 2011	Nov. 30, 2006 Fixed rate note which matured in November 2009	Jul. 31, 2007 Eurobond 750 Million Euros Issued July2007	Dec. 31, 2012 Eurobond 750 Million Euros Issued July2007 USD ($)	Aug. 31, 2010 Eurobond 750 Million Euros Issued July2007 EUR (€)	Dec. 31, 2012 Fair value hedges Interest rate swap contracts USD ($)	Jul. 31, 2007 Fair value hedges Interest rate swap contracts Fixed rate Eurobond Due 2014 EUR (€)	Aug. 31, 2010 Fair value hedges Interest rate swap contracts Fixed rate Eurobond Due 2014 EUR (€)	Oct. 31, 2008 Fair value hedges Interest rate swap contracts Floating rate Medium-term note which matured in 2011 USD ($) Derivative	Dec. 31, 2012 Derivatives designated as hedging instruments Fair value hedges USD ($)	Dec. 31, 2011 Derivatives designated as hedging instruments Fair value hedges USD ($)	Dec. 31, 2010 Derivatives designated as hedging instruments Fair value hedges USD ($)	Dec. 31, 2012 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)	Dec. 31, 2011 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)	Dec. 31, 2010 Derivatives designated as hedging instruments Fair value hedges Interest rate swap contracts Interest expense USD ($)
Derivatives in Cash Flow Hedging Relationships
Notional amount, interest rate swaps designated as fair value hedges							$ 342	€ 400		$ 800
Term of debt instrument		3 years	3 years	7 years				7 years		3 years
Face amount	775				1,017			750		800
Termination of notional amount of fixed-to-floating interest rate swap						150			150
Gain (loss) on termination of fixed-to-floating interest rate swap will be amortized over this debt's remaining life									18
Number of fixed-to-floating interest rate swaps										2
Interest rate, stated percentage (as a percent)		4.50%		5.00%						4.50%
Gain (Loss) on Derivative Recognized in income											(5)	(10)	(16)	(5)	(10)	(16)
Gain (Loss) on Hedged Item Recognized in Income											$ 5	$ 10	$ 16	$ 5	$ 10	$ 16

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Pension and Postretirement Benefit Plans (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Maximum
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Contributions made to the Company's plans	$ 600
Qualified and Non-qualified Pension Benefits
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Contributions made to the Company's plans	1,079	517
Qualified and Non-qualified Pension Benefits | Minimum
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Contributions made to the Company's plans	400
United States Qualified and Non-qualified Pension Benefits
Net periodic benefit cost (benefit)
Service cost	254	206	201
Interest cost	587	626	638
Expected return on plan assets	(992)	(927)	(929)
Amortization of transition (asset) obligation	0	0	0
Amortization of prior service cost (benefit)	5	11	13
Amortization of net actuarial (gain) loss	470	334	221
Net periodic benefit cost (benefit)	324	250	144
Settlements, curtailments, special termination benefits and other	26	1	0
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	350	251	144
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Transition (asset) obligation	0	0	0
Amortization of transition (asset) obligation	0	0	0
Prior service cost (benefit)	0	8	0
Amortization of prior service cost (benefit)	(5)	(11)	(13)
Net actuarial (gain) loss	(470)	1,976	227
Amortization of net actuarial (gain) loss	(470)	(334)	(221)
Foreign currency	0	0	0
Total recognized in other comprehensive (income) loss	(945)	1,639	(7)
Total recognized in net periodic benefit cost (benefit) and other comprehensive (income) loss	(595)	1,890	137
Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over next fiscal year
Amortization of transition (asset) obligation	0
Amortization of prior service cost (benefit)	5
Amortization of net actuarial (gain) loss	399
Total amortization expected over the next fiscal year	404
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.14%	4.15%	5.23%
Compensation rate increase	4.00%	4.00%	4.00%
Percentage decrease in discount rate obligation from the prior year	0.01%
Weighted-average assumptions used to determine net cost for years ended
Discount rate	4.15%	5.23%	5.77%
Expected return on assets	8.25%	8.50%	8.50%
Compensation rate increase	4.00%	4.00%	4.30%
United States Qualified Pension Benefits
Weighted-average assumptions used to determine benefit obligations
Additional expected pension expense in next fiscal year from the prior year	33
Weighted-average assumptions used to determine net cost for years ended
Percentage decrease in expected return on assets in next fiscal year from the prior year	0.25%
Asset Allocation assumption next fiscal year
Global equities assumption next fiscal year	30.00%
Private equities assumption next fiscal year	16.00%
Fixed-income securities assumption next fiscal year	33.00%
Absolute return investments assumption next fiscal year	16.00%
Commodities assumption next fiscal year	5.00%
Expected rate of return on plan assets in next fiscal year	8.00%
Company's assumption for the expected return on plan assets
Global equities assumption next fiscal year	7.58%
Private equities assumption next fiscal year	12.58%
Fixed income securities assumption next fiscal year	3.72%
Absolute return investments assumption next fiscal year	6.43%
Commodities assumption next fiscal year	6.08%
Rate of return on plan assets	13.60%	8.70%	14.40%
Average annual actual return on plan assets over the past 10 years	10.50%
Average annual actual return on plan assets over the past 25 years	10.60%
International Qualified and Non-qualified Pension Benefits
Net periodic benefit cost (benefit)
Service cost	124	124	105
Interest cost	247	261	241
Expected return on plan assets	(295)	(289)	(278)
Amortization of transition (asset) obligation	(1)	(2)	1
Amortization of prior service cost (benefit)	(17)	(14)	(4)
Amortization of net actuarial (gain) loss	122	116	84
Net periodic benefit cost (benefit)	180	196	149
Settlements, curtailments, special termination benefits and other	4	2	(22)
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	184	198	127
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Transition (asset) obligation	0	(2)	(1)
Amortization of transition (asset) obligation	1	2	(1)
Prior service cost (benefit)	(7)	(32)	(91)
Amortization of prior service cost (benefit)	17	14	4
Net actuarial (gain) loss	707	315	104
Amortization of net actuarial (gain) loss	(122)	(116)	(84)
Foreign currency	24	(17)	(19)
Total recognized in other comprehensive (income) loss	620	164	(88)
Total recognized in net periodic benefit cost (benefit) and other comprehensive (income) loss	804	362	39
Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over next fiscal year
Amortization of transition (asset) obligation	(1)
Amortization of prior service cost (benefit)	(17)
Amortization of net actuarial (gain) loss	159
Total amortization expected over the next fiscal year	141
Weighted-average assumptions used to determine benefit obligations
Discount rate	3.78%	4.58%	5.04%
Compensation rate increase	3.31%	3.52%	3.59%
Weighted-average assumptions used to determine net cost for years ended
Discount rate	4.58%	5.04%	5.30%
Expected return on assets	6.38%	6.58%	6.90%
Compensation rate increase	3.52%	3.59%	3.72%
Postretirement Benefits
Net periodic benefit cost (benefit)
Service cost	78	61	55
Interest cost	86	92	88
Expected return on plan assets	(84)	(77)	(83)
Amortization of transition (asset) obligation	0	0	0
Amortization of prior service cost (benefit)	(72)	(72)	(94)
Amortization of net actuarial (gain) loss	108	102	85
Net periodic benefit cost (benefit)	116	106	51
Settlements, curtailments, special termination benefits and other	0	0	0
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	116	106	51
Other changes in plan assets and benefit obligations recognized in other comprehensive (income) loss
Transition (asset) obligation	0	0	0
Amortization of transition (asset) obligation	0	0	0
Prior service cost (benefit)	0	0	69
Amortization of prior service cost (benefit)	72	72	94
Net actuarial (gain) loss	(33)	212	89
Amortization of net actuarial (gain) loss	(108)	(102)	(85)
Foreign currency	(1)	(2)	(1)
Total recognized in other comprehensive (income) loss	(70)	180	166
Total recognized in net periodic benefit cost (benefit) and other comprehensive (income) loss	46	286	217
Contributions made to the Company's plans	67	65
Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over next fiscal year
Amortization of transition (asset) obligation	0
Amortization of prior service cost (benefit)	(66)
Amortization of net actuarial (gain) loss	96
Total amortization expected over the next fiscal year	$ 30
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.00%	4.04%	5.09%
Percentage decrease in discount rate obligation from the prior year	0.04%
Weighted-average assumptions used to determine net cost for years ended
Discount rate	4.04%	5.09%	5.62%
Expected return on assets	7.30%	7.38%	7.30%

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Commitments and Contingencies (Details) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2003 Building in United Kingdom GBP (£)	Dec. 31, 2012 Building in United Kingdom USD ($)	Dec. 31, 2009 IT Investment USD ($)
Capital and Operating Leases:
Rental expense under operating leases	$ 300	$ 279	$ 262
Number of primary capital leases	2
Capital and operating leases with non-cancelable terms, low end of range	1 year
Primary Capital Leases
Capital lease term (in years)				22 years		7 years
Capital lease obligation	90.0			33.5	54.0	50.0
Minimum lease payments under capital leases
2013	22
2014	21
2015	8
2016	7
2017	4
After 2017	34
Total	96
Less: Amounts representing interest	6
Less: Current obligations under capital leases	19
Long-term obligations under capital leases	71	79
Minimum lease payments under operating leases
2013	194
2014	158
2015	119
2016	77
2017	68
After 2017	119
Total	735
Warranties/Guarantees:
Accrued product warranty liabilities	$ 28	$ 28

XML

Supplemental Equity and Comprehensive Income Information (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2011	Dec. 31, 2011
Business Acquisitions Information
Cash paid for purchase and sale of subsidiary shares - net		$ 49
Winterthur Technologie AG
Business Acquisitions Information
Percentage of subsidiary share's owned by entity on the business acquisition date (as a percent)	86.00%
Percentage of subsidiary share's owned by entity as of balance sheet date (as a percent)		100.00%
Cash paid for purchase and sale of subsidiary shares - net		$ 57

XML

Pension and Postretirement Benefit Plans (Details 6) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
United States Qualified and Non-qualified Pension Benefits
Summary of changes in fair values of assets
Fair value, beginning balance	$ 12,102	$ 11,575
Foreign currency exchange	0	0
Fair value, ending balance	13,781	12,102
United States Qualified and Non-qualified Pension Benefits | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	3,203	3,459
Net transfers into / (out of) level 3	467	(54)
Purchases, sales, issuances and settlements, net	(407)	(254)
Realized gain (loss)	221	(21)
Change in unrealized gains/(losses) relating to instruments sold during the period	(73)	72
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	182	1
Fair value, ending balance	3,593	3,203
United States Qualified and Non-qualified Pension Benefits | Equities
Summary of changes in fair values of assets
Fair value, ending balance	3,899	3,339
United States Qualified and Non-qualified Pension Benefits | Equities | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	442	506
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	(1)	(52)
Realized gain (loss)	0	3
Change in unrealized gains/(losses) relating to instruments sold during the period	(1)	(8)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	43	(7)
Fair value, ending balance	483	442
United States Qualified and Non-qualified Pension Benefits | Fixed Income
Summary of changes in fair values of assets
Fair value, ending balance	4,088	4,014
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	74	144
Net transfers into / (out of) level 3	(5)	5
Purchases, sales, issuances and settlements, net	(73)	(97)
Realized gain (loss)	25	21
Change in unrealized gains/(losses) relating to instruments sold during the period	(19)	(17)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	0	18
Fair value, ending balance	2	74
United States Qualified and Non-qualified Pension Benefits | Private Equity
Summary of changes in fair values of assets
Fair value, ending balance	2,143	2,063
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	2,062	2,075
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	(108)	(108)
Realized gain (loss)	120	(50)
Change in unrealized gains/(losses) relating to instruments sold during the period	(3)	133
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	65	12
Fair value, ending balance	2,136	2,062
United States Qualified and Non-qualified Pension Benefits | Absolute Return
Summary of changes in fair values of assets
Fair value, ending balance	1,698	1,755
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	520	623
Net transfers into / (out of) level 3	472	(59)
Purchases, sales, issuances and settlements, net	(225)	3
Realized gain (loss)	76	5
Change in unrealized gains/(losses) relating to instruments sold during the period	(49)	(36)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	71	(16)
Fair value, ending balance	865	520
United States Qualified and Non-qualified Pension Benefits | Commodities
Summary of changes in fair values of assets
Fair value, ending balance	209	540
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	105	111
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	0	0
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	(1)	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	3	(6)
Fair value, ending balance	107	105
International Qualified and Non-qualified Pension Benefits
Summary of changes in fair values of assets
Fair value, beginning balance	4,643	4,355
Foreign currency exchange	62	(74)
Fair value, ending balance	5,222	4,643
International Qualified and Non-qualified Pension Benefits | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	481	546
Net transfers into / (out of) level 3	0	(96)
Foreign currency exchange	0	(12)
Purchases, sales, issuances and settlements, net	101	20
Realized gain (loss)	0	1
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	15	22
Fair value, ending balance	597	481
International Qualified and Non-qualified Pension Benefits | Equities
Summary of changes in fair values of assets
Fair value, ending balance	1,721	1,676
International Qualified and Non-qualified Pension Benefits | Equities | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	5	98
Net transfers into / (out of) level 3	0	(93)
Foreign currency exchange	0	0
Purchases, sales, issuances and settlements, net	0	0
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	0	0
Fair value, ending balance	5	5
International Qualified and Non-qualified Pension Benefits | Fixed Income
Summary of changes in fair values of assets
Fair value, ending balance	2,571	2,127
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	39	34
Net transfers into / (out of) level 3	0	0
Foreign currency exchange	2	(1)
Purchases, sales, issuances and settlements, net	(2)	0
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	(3)	6
Fair value, ending balance	36	39
International Qualified and Non-qualified Pension Benefits | Private Equity
Summary of changes in fair values of assets
Fair value, ending balance	116	155
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	67	70
Net transfers into / (out of) level 3	0	(21)
Foreign currency exchange	(4)	(1)
Purchases, sales, issuances and settlements, net	11	17
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	(3)	2
Fair value, ending balance	71	67
International Qualified and Non-qualified Pension Benefits | Absolute Return
Summary of changes in fair values of assets
Fair value, ending balance	604	602
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	370	344
Net transfers into / (out of) level 3	0	18
Foreign currency exchange	2	(10)
Purchases, sales, issuances and settlements, net	92	3
Realized gain (loss)	0	1
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	21	14
Fair value, ending balance	485	370
Postretirement Benefits
Summary of changes in fair values of assets
Fair value, beginning balance	1,209	1,149
Foreign currency exchange	0	0
Fair value, ending balance	1,321	1,209
Postretirement Benefits | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	224	269
Net transfers into / (out of) level 3	15	(2)
Purchases, sales, issuances and settlements, net	(36)	(46)
Realized gain (loss)	14	(30)
Change in unrealized gains/(losses) relating to instruments sold during the period	(6)	17
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	7	16
Fair value, ending balance	218	224
Postretirement Benefits | Equities
Summary of changes in fair values of assets
Fair value, ending balance	586	512
Postretirement Benefits | Equities | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	14	16
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	0	(1)
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	0	(1)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	2	0
Fair value, ending balance	16	14
Postretirement Benefits | Fixed Income
Summary of changes in fair values of assets
Fair value, ending balance	410	377
Postretirement Benefits | Fixed Income | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	2	4
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	(2)	(3)
Realized gain (loss)	1	1
Change in unrealized gains/(losses) relating to instruments sold during the period	(1)	(1)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	0	1
Fair value, ending balance	0	2
Postretirement Benefits | Private Equity
Summary of changes in fair values of assets
Fair value, ending balance	170	187
Postretirement Benefits | Private Equity | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	187	226
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	(27)	(43)
Realized gain (loss)	11	(31)
Change in unrealized gains/(losses) relating to instruments sold during the period	(4)	20
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	3	15
Fair value, ending balance	170	187
Postretirement Benefits | Absolute Return
Summary of changes in fair values of assets
Fair value, ending balance	55	57
Postretirement Benefits | Absolute Return | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	17	20
Net transfers into / (out of) level 3	15	(2)
Purchases, sales, issuances and settlements, net	(7)	1
Realized gain (loss)	2	0
Change in unrealized gains/(losses) relating to instruments sold during the period	(1)	(1)
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	2	(1)
Fair value, ending balance	28	17
Postretirement Benefits | Commodities
Summary of changes in fair values of assets
Fair value, ending balance	7	18
Postretirement Benefits | Commodities | Level 3
Summary of changes in fair values of assets
Fair value, beginning balance	4	3
Net transfers into / (out of) level 3	0	0
Purchases, sales, issuances and settlements, net	0	0
Realized gain (loss)	0	0
Change in unrealized gains/(losses) relating to instruments sold during the period	0	0
Change in unrealized gains/(losses) relating to instruments still held at the reporting date	0	1
Fair value, ending balance	$ 4	$ 4

XML

Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	$ 2,810	$ 2,357
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	72	135
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	106	49
Fair value on a recurring basis | Fair Value | Foreign currency forward/option contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	49	107
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	105	42
Fair value on a recurring basis | Fair Value | Commodity price swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	7
Fair value on a recurring basis | Fair Value | Interest rate swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	23	28
Fair value on a recurring basis | Fair Value | U.S. government agency securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	287	480
Fair value on a recurring basis | Fair Value | Foreign government debt
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	67	23
Fair value on a recurring basis | Fair Value | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	965	668
Fair value on a recurring basis | Fair Value | Certificates of deposit/time deposits
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	41	49
Fair value on a recurring basis | Fair Value | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	116	30
Fair value on a recurring basis | Fair Value | Asset-backed securities Automobile loan related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	942	718
Fair value on a recurring basis | Fair Value | Asset-backed securities Credit card related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	157	268
Fair value on a recurring basis | Fair Value | Asset-backed securities Equipment lease related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	90	64
Fair value on a recurring basis | Fair Value | Asset-backed securities Other asset-backed securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	39	5
Fair value on a recurring basis | Fair Value | U.S. treasury securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	72	34
Fair value on a recurring basis | Fair Value | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	27	14
Fair value on a recurring basis | Fair Value | Auction rate securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	7	4
Fair value on a recurring basis | Fair Value | Investments
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	3	4
Fair value on a recurring basis | Level 1 | Foreign currency forward/option contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	49	98
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	104	42
Fair value on a recurring basis | Level 1 | Commodity price swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	7
Fair value on a recurring basis | Level 1 | Interest rate swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 1 | U.S. government agency securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Foreign government debt
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Certificates of deposit/time deposits
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Automobile loan related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Credit card related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Equipment lease related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Other asset-backed securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | U.S. treasury securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	72	34
Fair value on a recurring basis | Level 1 | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Auction rate securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Investments
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	3	4
Fair value on a recurring basis | Level 2 | Foreign currency forward/option contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	9
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	0
Fair value on a recurring basis | Level 2 | Commodity price swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 2 | Interest rate swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	23	28
Fair value on a recurring basis | Level 2 | U.S. government agency securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	287	480
Fair value on a recurring basis | Level 2 | Foreign government debt
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	67	23
Fair value on a recurring basis | Level 2 | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	965	668
Fair value on a recurring basis | Level 2 | Certificates of deposit/time deposits
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	41	49
Fair value on a recurring basis | Level 2 | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	116	30
Fair value on a recurring basis | Level 2 | Asset-backed securities Automobile loan related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	942	718
Fair value on a recurring basis | Level 2 | Asset-backed securities Credit card related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	157	268
Fair value on a recurring basis | Level 2 | Asset-backed securities Equipment lease related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	90	64
Fair value on a recurring basis | Level 2 | Asset-backed securities Other asset-backed securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	39	5
Fair value on a recurring basis | Level 2 | U.S. treasury securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 2 | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	27	14
Fair value on a recurring basis | Level 2 | Auction rate securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 2 | Investments
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Foreign currency forward/option contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 3 | Commodity price swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 3 | Interest rate swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 3 | U.S. government agency securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Foreign government debt
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Certificates of deposit/time deposits
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Automobile loan related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Credit card related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Equipment lease related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Other asset-backed securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | U.S. treasury securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Auction rate securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	7	4
Fair value on a recurring basis | Level 3 | Investments
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	$ 0	$ 0

XML

Derivatives (Details 4) (Derivatives not designated as hedging instruments, USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Derivatives not designated as hedging instruments
Gross notional amount of forward, option and swap contracts not designated as hedging instruments	$ 1,000,000,000
Gain (Loss) on Derivative Recognized in income	(2,000,000)	22,000,000	(42,000,000)
Foreign currency forward/option contracts | Cost of sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(24,000,000)	13,000,000	(24,000,000)
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	22,000,000	9,000,000	(19,000,000)
Commodity price swap contracts | Cost of sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 0	$ 0	$ 1,000,000

XML

Fair Value Measurements (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of items measured at fair value on a recurring basis that used significant unobservable inputs (Level 3)
Balance at the beginning of the period	$ 4	$ 7	$ 5
Total gains or losses included in earnings	0	0	0
Total gains or losses included in other comprehensive income	3	(3)	2
Purchases, issuances, and settlements	0	0	0
Transfers in and/or out of Level 3	0	0	0
Balance at the end of the period	7	4	7
Additional losses included in earnings due to reclassification from other comprehensive income for:
Securities sold during the period ended December 31	0	0	0
Securities still held at December 31	$ 0	$ 0	$ 0

XML

Pension and Postretirement Benefit Plans (Details 7) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Defined Contribution Plan
Schedule Of Defined Contribution Plans Disclosures
Company match of eligible compensation, high end of range	6.00%
Employer match of employee contributions, pre January 1, 2009, low end of range	60.00%
Employer match of employee contributions, pre January 1, 2009, high end of range	75.00%
Company match of eligible compensation, percent for employees hired on or after January 1, 2009	100.00%
Company contribution to employer retirement income account for employees hired on or after January 1, 2009	3.00%
Expenses related to defined contribution plans	$ 124	$ 109	$ 97
Foreign Defined Contribution Plan
Schedule Of Defined Contribution Plans Disclosures
Expenses related to defined contribution plans	$ 58	$ 54	$ 36

XML

Pension and Postretirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended						3 Months Ended
	Mar. 31, 2012 Participants	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2011 LimitedPartner	Dec. 31, 2012 Qualified and Non-qualified Pension Benefits Plans Countries	Dec. 31, 2012 United States Qualified and Non-qualified Pension Benefits	Jun. 30, 2010 International Qualified and Non-qualified Pension Benefits	Dec. 31, 2012 International Qualified and Non-qualified Pension Benefits Plans
Benefit Plan Information
Company-sponsored retirement plans, minimum number of worldwide plans					70
Company-sponsored retirement plans, minimum number of international plans								65
Company-sponsored retirement plans, number of countries					25			24
Percentage of funding target for defined benefit pension plans, of the target liability by 2011						100.00%
Brazilian subsidiary defined benefit plan curtailment gain							$ 22
Special termination benefits - number of additional years of pension service	1 year
Special termination benefits - number of additional years of age for certain benefit calculations	1 year
Special termination benefits - number of participants	616
Special termination benefits charge	26
Percentage of WG Trading Company holdings in relation to total fair value of the company's total plan assets high end of range (percent expressed as a decimal)		1.00%
Number of additional limited partners of WG Trading Company, in addition to 3M, who objected and appealed the court's order to the United States Court of Appeals for the Second Circuit				6
Maximum amount of certain nonqualified unfunded pension and postretirement benefit plans obligations not included in benefit obligation reconciliation		$ 40	$ 40

XML

Geographic Areas

12 Months Ended

Dec. 31, 2012

Geographic Areas Disclosure

Geographic Areas

NOTE 16.Geographic Areas

Geographic area information is used by the Company as a secondary performance measure to manage its businesses. Export sales and certain income and expense items are generally reported within the geographic area where the final sales to 3M customers are made. During the first quarter of 2013, 3M realigned its geographic area reporting to include Puerto Rico in the United States, rather than in the Latin America/Canada region. The financial information presented herein reflects this geographic area change for all periods presented.

													Property, Plant and Equipment - net
	Net Sales						Operating Income
(Millions)	2012		2011		2010		2012		2011		2010		2012		2011
United States	$	10,571	$	10,071	$	9,254	$	1,938	$	1,639	$	1,647	$	4,279	$	3,980
Asia Pacific		9,092		9,108		8,259		2,450		2,523		2,400		2,029		1,887
Europe, Middle East and Africa		6,730		7,076		6,259		1,163		1,150		1,112		1,499		1,271
Latin America and Canada		3,529		3,368		2,906		936		886		787		571		528
Other Unallocated		(18)		(12)		(16)		(4)		(20)		(28)		―		―
Total Company	$	29,904	$	29,611	$	26,662	$	6,483	$	6,178	$	5,918	$	8,378	$	7,666

XML

Goodwill and Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Acquired intangible assets disclosures
Total gross carrying amount	$ 3,052	$ 2,884
Total accumulated amortization	(1,254)	(1,091)
Total finite-lived intangible assets - net	1,798	1,793
Non-amortizable intangible assets (tradenames)	127	123
Total intangible assets - net	1,925	1,916
Purchased finite-lived intangible assets	213	342	663
Patents
Acquired intangible assets disclosures
Total gross carrying amount	596	561
Total accumulated amortization	(421)	(374)
Other amortizable intangible assets (primarily tradenames and customer related intangibles)
Acquired intangible assets disclosures
Total gross carrying amount	2,456	2,323
Total accumulated amortization	$ (833)	$ (717)

XML

Business Segments (Tables)

12 Months Ended

Dec. 31, 2012

Business Segments

Business Segment Information

Business Segment Products
Business Segment	Major Products
Industrial	Tapes, coated and nonwoven abrasives, adhesives, specialty materials, filtration products, closure systems for personal hygiene products, acoustic systems products, automotive components, abrasion-resistant films, structural adhesives and paint finishing and detailing products
Safety and Graphics	Personal protection products, traffic safety and security products, commercial graphics systems, commercial cleaning and protection products, floor matting, roofing granules for asphalt shingles, and track and trace solutions
Electronics and Energy	Optical films solutions for electronic displays, projection solutions, packaging and interconnection devices, insulating and splicing solutions for the electronics, telecommunications and electrical industries, touch screens and touch monitors, renewable energy component solutions, and infrastructure protection products
Health Care	Medical and surgical supplies, skin health and infection prevention products, drug delivery systems, dental and orthodontic products, health information systems and food safety products
Consumer	Sponges, scouring pads, high-performance cloths, consumer and office tapes, repositionable notes, indexing systems, construction and home improvement products, home care products, protective material products, and consumer and office tapes and adhesives

Business Segment Information
	Net Sales						Operating Income
(Millions)	2012		2011		2010		2012		2011		2010
Industrial	$	9,943	$	9,629	$	8,116	$	2,236	$	1,983	$	1,720
Safety and Graphics		5,471		5,458		4,873		1,217		1,237		1,138
Electronics and Energy		5,458		5,732		5,632		1,026		1,140		1,207
Health Care		5,138		5,011		4,492		1,641		1,484		1,357
Consumer		4,386		4,230		3,926		943		855		859
Corporate and Unallocated		4		9		11		(471)		(420)		(278)
Elimination of Dual Credit		(496)		(458)		(388)		(109)		(101)		(85)
Total Company	$	29,904	$	29,611	$	26,662	$	6,483	$	6,178	$	5,918

	Assets						Depreciation & Amortization						Capital Expenditures
(Millions)	2012		2011		2010		2012		2011		2010		2012		2011		2010
Industrial	$	8,587	$	7,553	$	6,486	$	323	$	337	$	312	$	415	$	383	$	304
Safety and Graphics		5,111		4,975		4,979		238		251		225		190		204		157
Electronics and Energy		5,512		5,296		5,196		266		255		243		350		274		293
Health Care		4,296		4,190		4,181		169		199		130		113		159		78
Consumer		2,445		2,423		2,169		110		102		101		105		98		70
Corporate and Unallocated		7,925		7,179		7,145		182		92		109		311		261		189
Total Company	$	33,876	$	31,616	$	30,156	$	1,288	$	1,236	$	1,120	$	1,484	$	1,379	$	1,091

XML

Pension and Postretirement Benefit Plans (Details 5) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
United States Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Total, before other items to reconcile	$ 14,013	$ 12,606
Other items to reconcile to fair value of plan assets	(232)	(504)
Fair value of plan assets	13,781	12,102	11,575
United States Qualified and Non-qualified Pension Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile	4,474	3,527
United States Qualified and Non-qualified Pension Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile	5,946	5,876
United States Qualified and Non-qualified Pension Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile	3,593	3,203
Fair value of plan assets	3,593	3,203	3,459
United States Qualified and Non-qualified Pension Benefits | Equities
Benefit Plan Information
Fair value of plan assets	3,899	3,339
United States Qualified and Non-qualified Pension Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets	2,994	2,281
United States Qualified and Non-qualified Pension Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets	422	616
United States Qualified and Non-qualified Pension Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets	483	442	506
United States Qualified and Non-qualified Pension Benefits | U.S. equities
Benefit Plan Information
Fair value of plan assets	1,678	1,205
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets	1,662	1,186
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets	11	14
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 3
Benefit Plan Information
Fair value of plan assets	5	5
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities
Benefit Plan Information
Fair value of plan assets	1,332	1,096
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets	1,332	1,095
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets	0	1
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Derivatives
Benefit Plan Information
Fair value of plan assets	5	(3)
United States Qualified and Non-qualified Pension Benefits | Derivatives | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Derivatives | Level 2
Benefit Plan Information
Fair value of plan assets	5	(3)
United States Qualified and Non-qualified Pension Benefits | Derivatives | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | EAFE index funds
Benefit Plan Information
Fair value of plan assets	250	476
United States Qualified and Non-qualified Pension Benefits | EAFE index funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | EAFE index funds | Level 2
Benefit Plan Information
Fair value of plan assets	250	476
United States Qualified and Non-qualified Pension Benefits | EAFE index funds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Index funds
Benefit Plan Information
Fair value of plan assets	157	129
United States Qualified and Non-qualified Pension Benefits | Index funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Index funds | Level 2
Benefit Plan Information
Fair value of plan assets	156	128
United States Qualified and Non-qualified Pension Benefits | Index funds | Level 3
Benefit Plan Information
Fair value of plan assets	1	1
United States Qualified and Non-qualified Pension Benefits | Long/short equity
Benefit Plan Information
Fair value of plan assets	477	436
United States Qualified and Non-qualified Pension Benefits | Long/short equity | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Long/short equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Long/short equity | Level 3
Benefit Plan Information
Fair value of plan assets	477	436
United States Qualified and Non-qualified Pension Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets	4,088	4,014
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets	1,044	950
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets	3,042	2,990
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	2	74	144
United States Qualified and Non-qualified Pension Benefits | U.S. government securities
Benefit Plan Information
Fair value of plan assets	1,640	1,645
United States Qualified and Non-qualified Pension Benefits | U.S. government securities | Level 1
Benefit Plan Information
Fair value of plan assets	844	776
United States Qualified and Non-qualified Pension Benefits | U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets	796	869
United States Qualified and Non-qualified Pension Benefits | U.S. government securities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities
Benefit Plan Information
Fair value of plan assets	4	9
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 1
Benefit Plan Information
Fair value of plan assets	4	4
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 2
Benefit Plan Information
Fair value of plan assets	0	5
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets	1,445	1,222
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets	196	168
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets	1,249	1,049
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 3
Benefit Plan Information
Fair value of plan assets	0	5
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets	286	244
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets	286	244
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities
Benefit Plan Information
Fair value of plan assets	378	314
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets	378	314
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities:
Benefit Plan Information
Fair value of plan assets	21	23
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities: | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities: | Level 2
Benefit Plan Information
Fair value of plan assets	21	23
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities: | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations
Benefit Plan Information
Fair value of plan assets	43	137
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations | Level 2
Benefit Plan Information
Fair value of plan assets	43	137
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Other - fixed income
Benefit Plan Information
Fair value of plan assets	29	24
United States Qualified and Non-qualified Pension Benefits | Other - fixed income | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Other - fixed income | Level 2
Benefit Plan Information
Fair value of plan assets	29	24
United States Qualified and Non-qualified Pension Benefits | Other - fixed income | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Private placements
Benefit Plan Information
Fair value of plan assets	166	194
United States Qualified and Non-qualified Pension Benefits | Private placements | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Private placements | Level 2
Benefit Plan Information
Fair value of plan assets	164	125
United States Qualified and Non-qualified Pension Benefits | Private placements | Level 3
Benefit Plan Information
Fair value of plan assets	2	69
United States Qualified and Non-qualified Pension Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets	76	202
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 1
Benefit Plan Information
Fair value of plan assets	0	2
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets	76	200
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets	2,143	2,063
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 1
Benefit Plan Information
Fair value of plan assets	7	1
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	2,136	2,062	2,075
United States Qualified and Non-qualified Pension Benefits | Buyouts
Benefit Plan Information
Fair value of plan assets	662	618
United States Qualified and Non-qualified Pension Benefits | Buyouts | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Buyouts | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Buyouts | Level 3
Benefit Plan Information
Fair value of plan assets	662	618
United States Qualified and Non-qualified Pension Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets	(51)	0
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 3
Benefit Plan Information
Fair value of plan assets	(51)	0
United States Qualified and Non-qualified Pension Benefits | Direct investments
Benefit Plan Information
Fair value of plan assets	129	0
United States Qualified and Non-qualified Pension Benefits | Direct investments | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Direct investments | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Direct investments | Level 3
Benefit Plan Information
Fair value of plan assets	129	0
United States Qualified and Non-qualified Pension Benefits | Distressed debt
Benefit Plan Information
Fair value of plan assets	301	333
United States Qualified and Non-qualified Pension Benefits | Distressed debt | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Distressed debt | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Distressed debt | Level 3
Benefit Plan Information
Fair value of plan assets	301	333
United States Qualified and Non-qualified Pension Benefits | Growth equity
Benefit Plan Information
Fair value of plan assets	91	28
United States Qualified and Non-qualified Pension Benefits | Growth equity | Level 1
Benefit Plan Information
Fair value of plan assets	7	1
United States Qualified and Non-qualified Pension Benefits | Growth equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Growth equity | Level 3
Benefit Plan Information
Fair value of plan assets	84	27
United States Qualified and Non-qualified Pension Benefits | Mezzanine
Benefit Plan Information
Fair value of plan assets	82	90
United States Qualified and Non-qualified Pension Benefits | Mezzanine | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Mezzanine | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Mezzanine | Level 3
Benefit Plan Information
Fair value of plan assets	82	90
United States Qualified and Non-qualified Pension Benefits | Real estate
Benefit Plan Information
Fair value of plan assets	136	148
United States Qualified and Non-qualified Pension Benefits | Real estate | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Real estate | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets	136	148
United States Qualified and Non-qualified Pension Benefits | Secondary
Benefit Plan Information
Fair value of plan assets	166	181
United States Qualified and Non-qualified Pension Benefits | Secondary | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Secondary | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Secondary | Level 3
Benefit Plan Information
Fair value of plan assets	166	181
United States Qualified and Non-qualified Pension Benefits | Venture capital
Benefit Plan Information
Fair value of plan assets	627	665
United States Qualified and Non-qualified Pension Benefits | Venture capital | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Venture capital | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Venture capital | Level 3
Benefit Plan Information
Fair value of plan assets	627	665
United States Qualified and Non-qualified Pension Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets	1,698	1,755
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets	833	1,235
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	865	520	623
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds
Benefit Plan Information
Fair value of plan assets	1,497	1,323
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds | Level 2
Benefit Plan Information
Fair value of plan assets	833	1,235
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds | Level 3
Benefit Plan Information
Fair value of plan assets	664	88
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds
Benefit Plan Information
Fair value of plan assets	201	432
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds | Level 3
Benefit Plan Information
Fair value of plan assets	201	432
United States Qualified and Non-qualified Pension Benefits | Commodities
Benefit Plan Information
Fair value of plan assets	209	540
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 2
Benefit Plan Information
Fair value of plan assets	102	435
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 3
Benefit Plan Information
Fair value of plan assets	107	105	111
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets	1,976	895
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets	429	295
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets	1,547	600
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Total, before other items to reconcile	5,244	4,668
Other items to reconcile to fair value of plan assets	(22)	(25)
Fair value of plan assets	5,222	4,643	4,355
International Qualified and Non-qualified Pension Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile	1,865	1,505
International Qualified and Non-qualified Pension Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile	2,782	2,682
International Qualified and Non-qualified Pension Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile	597	481
Fair value of plan assets	597	481	546
International Qualified and Non-qualified Pension Benefits | Equities
Benefit Plan Information
Fair value of plan assets	1,721	1,676
International Qualified and Non-qualified Pension Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets	1,184	1,002
International Qualified and Non-qualified Pension Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets	532	669
International Qualified and Non-qualified Pension Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets	5	5	98
International Qualified and Non-qualified Pension Benefits | Growth equities
Benefit Plan Information
Fair value of plan assets	761	515
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 1
Benefit Plan Information
Fair value of plan assets	628	374
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 2
Benefit Plan Information
Fair value of plan assets	133	141
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Value equities
Benefit Plan Information
Fair value of plan assets	491	499
International Qualified and Non-qualified Pension Benefits | Value equities | Level 1
Benefit Plan Information
Fair value of plan assets	468	401
International Qualified and Non-qualified Pension Benefits | Value equities | Level 2
Benefit Plan Information
Fair value of plan assets	23	98
International Qualified and Non-qualified Pension Benefits | Value equities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Core equities
Benefit Plan Information
Fair value of plan assets	469	662
International Qualified and Non-qualified Pension Benefits | Core equities | Level 1
Benefit Plan Information
Fair value of plan assets	88	227
International Qualified and Non-qualified Pension Benefits | Core equities | Level 2
Benefit Plan Information
Fair value of plan assets	376	430
International Qualified and Non-qualified Pension Benefits | Core equities | Level 3
Benefit Plan Information
Fair value of plan assets	5	5
International Qualified and Non-qualified Pension Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets	2,571	2,127
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets	467	394
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets	2,068	1,694
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	36	39	34
International Qualified and Non-qualified Pension Benefits | Domestic government debt
Benefit Plan Information
Fair value of plan assets	991	773
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 1
Benefit Plan Information
Fair value of plan assets	297	188
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 2
Benefit Plan Information
Fair value of plan assets	694	579
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 3
Benefit Plan Information
Fair value of plan assets	0	6
International Qualified and Non-qualified Pension Benefits | Foreign government debt
Benefit Plan Information
Fair value of plan assets	617	742
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 1
Benefit Plan Information
Fair value of plan assets	170	93
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 2
Benefit Plan Information
Fair value of plan assets	445	647
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 3
Benefit Plan Information
Fair value of plan assets	2	2
International Qualified and Non-qualified Pension Benefits | Corporate debt securities
Benefit Plan Information
Fair value of plan assets	648	536
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 1
Benefit Plan Information
Fair value of plan assets	0	113
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 2
Benefit Plan Information
Fair value of plan assets	630	404
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 3
Benefit Plan Information
Fair value of plan assets	18	19
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt
Benefit Plan Information
Fair value of plan assets	31	25
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt | Level 2
Benefit Plan Information
Fair value of plan assets	31	25
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Other - debt obligations
Benefit Plan Information
Fair value of plan assets	284	51
International Qualified and Non-qualified Pension Benefits | Other - debt obligations | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Other - debt obligations | Level 2
Benefit Plan Information
Fair value of plan assets	268	39
International Qualified and Non-qualified Pension Benefits | Other - debt obligations | Level 3
Benefit Plan Information
Fair value of plan assets	16	12
International Qualified and Non-qualified Pension Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets	116	155
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 1
Benefit Plan Information
Fair value of plan assets	3	3
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 2
Benefit Plan Information
Fair value of plan assets	42	85
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	71	67	70
International Qualified and Non-qualified Pension Benefits | Private equity funds
Benefit Plan Information
Fair value of plan assets	22	67
International Qualified and Non-qualified Pension Benefits | Private equity funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Private equity funds | Level 2
Benefit Plan Information
Fair value of plan assets	0	47
International Qualified and Non-qualified Pension Benefits | Private equity funds | Level 3
Benefit Plan Information
Fair value of plan assets	22	20
International Qualified and Non-qualified Pension Benefits | Real estate
Benefit Plan Information
Fair value of plan assets	94	88
International Qualified and Non-qualified Pension Benefits | Real estate | Level 1
Benefit Plan Information
Fair value of plan assets	3	3
International Qualified and Non-qualified Pension Benefits | Real estate | Level 2
Benefit Plan Information
Fair value of plan assets	42	38
International Qualified and Non-qualified Pension Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets	49	47
International Qualified and Non-qualified Pension Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets	604	602
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets	119	232
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	485	370	344
International Qualified and Non-qualified Pension Benefits | Hedge funds
Benefit Plan Information
Fair value of plan assets	125	172
International Qualified and Non-qualified Pension Benefits | Hedge funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Hedge funds | Level 2
Benefit Plan Information
Fair value of plan assets	75	172
International Qualified and Non-qualified Pension Benefits | Hedge funds | Level 3
Benefit Plan Information
Fair value of plan assets	50	0
International Qualified and Non-qualified Pension Benefits | Insurance
Benefit Plan Information
Fair value of plan assets	433	369
International Qualified and Non-qualified Pension Benefits | Insurance | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Insurance | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Insurance | Level 3
Benefit Plan Information
Fair value of plan assets	433	369
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return
Benefit Plan Information
Fair value of plan assets	20	58
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets	20	58
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return
Benefit Plan Information
Fair value of plan assets	26	3
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets	24	2
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	2	1
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets	232	108
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets	211	106
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets	21	2
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits
Benefit Plan Information
Total, before other items to reconcile	1,329	1,212
Other items to reconcile to fair value of plan assets	(8)	(3)
Fair value of plan assets	1,321	1,209	1,149
Postretirement Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile	640	511
Postretirement Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile	471	477
Postretirement Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile	218	224
Fair value of plan assets	218	224	269
Postretirement Benefits | Equities
Benefit Plan Information
Fair value of plan assets	586	512
Postretirement Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets	520	440
Postretirement Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets	50	58
Postretirement Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets	16	14	16
Postretirement Benefits | U.S. equities
Benefit Plan Information
Fair value of plan assets	466	396
Postretirement Benefits | U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets	466	396
Postretirement Benefits | U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | U.S. equities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. equities
Benefit Plan Information
Fair value of plan assets	54	44
Postretirement Benefits | Non-U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets	54	44
Postretirement Benefits | Non-U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. equities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | EAFE index funds
Benefit Plan Information
Fair value of plan assets	8	15
Postretirement Benefits | EAFE index funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | EAFE index funds | Level 2
Benefit Plan Information
Fair value of plan assets	8	15
Postretirement Benefits | EAFE index funds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Index funds
Benefit Plan Information
Fair value of plan assets	42	43
Postretirement Benefits | Index funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Index funds | Level 2
Benefit Plan Information
Fair value of plan assets	42	43
Postretirement Benefits | Index funds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Long/short equity
Benefit Plan Information
Fair value of plan assets	16	14
Postretirement Benefits | Long/short equity | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Long/short equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Long/short equity | Level 3
Benefit Plan Information
Fair value of plan assets	16	14
Postretirement Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets	410	377
Postretirement Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets	69	61
Postretirement Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets	341	314
Postretirement Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	0	2	4
Postretirement Benefits | U.S. government securities
Benefit Plan Information
Fair value of plan assets	280	252
Postretirement Benefits | U.S. government securities | Level 1
Benefit Plan Information
Fair value of plan assets	63	55
Postretirement Benefits | U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets	217	197
Postretirement Benefits | U.S. government securities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets	74	68
Postretirement Benefits | U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets	6	6
Postretirement Benefits | U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets	68	62
Postretirement Benefits | U.S. corporate bonds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets	16	14
Postretirement Benefits | Non-U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets	16	14
Postretirement Benefits | Non-U.S. corporate bonds | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. government securities
Benefit Plan Information
Fair value of plan assets	16	12
Postretirement Benefits | Non-U.S. government securities | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Non-U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets	16	12
Postretirement Benefits | Non-U.S. government securities | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Asset-backed securities:
Benefit Plan Information
Fair value of plan assets	6	5
Postretirement Benefits | Asset-backed securities: | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Asset-backed securities: | Level 2
Benefit Plan Information
Fair value of plan assets	6	5
Postretirement Benefits | Asset-backed securities: | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Collateralized mortgage obligations
Benefit Plan Information
Fair value of plan assets	4	7
Postretirement Benefits | Collateralized mortgage obligations | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Collateralized mortgage obligations | Level 2
Benefit Plan Information
Fair value of plan assets	4	7
Postretirement Benefits | Collateralized mortgage obligations | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Other - fixed income
Benefit Plan Information
Fair value of plan assets	1	1
Postretirement Benefits | Other - fixed income | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Other - fixed income | Level 2
Benefit Plan Information
Fair value of plan assets	1	1
Postretirement Benefits | Other - fixed income | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Private placements
Benefit Plan Information
Fair value of plan assets	11	11
Postretirement Benefits | Private placements | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Private placements | Level 2
Benefit Plan Information
Fair value of plan assets	11	9
Postretirement Benefits | Private placements | Level 3
Benefit Plan Information
Fair value of plan assets	0	2
Postretirement Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets	2	7
Postretirement Benefits | Derivative instruments | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets	2	7
Postretirement Benefits | Derivative instruments | Level 3
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets	170	187
Postretirement Benefits | Private Equity | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Private Equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	170	187	226
Postretirement Benefits | Buyouts
Benefit Plan Information
Fair value of plan assets	51	56
Postretirement Benefits | Buyouts | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Buyouts | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Buyouts | Level 3
Benefit Plan Information
Fair value of plan assets	51	56
Postretirement Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets	(2)	0
Postretirement Benefits | Derivative instruments | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Derivative instruments | Level 3
Benefit Plan Information
Fair value of plan assets	(2)	0
Postretirement Benefits | Direct investments
Benefit Plan Information
Fair value of plan assets	4	0
Postretirement Benefits | Direct investments | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Direct investments | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Direct investments | Level 3
Benefit Plan Information
Fair value of plan assets	4	0
Postretirement Benefits | Distressed debt
Benefit Plan Information
Fair value of plan assets	11	17
Postretirement Benefits | Distressed debt | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Distressed debt | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Distressed debt | Level 3
Benefit Plan Information
Fair value of plan assets	11	17
Postretirement Benefits | Growth equity
Benefit Plan Information
Fair value of plan assets	3	1
Postretirement Benefits | Growth equity | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Growth equity | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Growth equity | Level 3
Benefit Plan Information
Fair value of plan assets	3	1
Postretirement Benefits | Mezzanine
Benefit Plan Information
Fair value of plan assets	3	3
Postretirement Benefits | Mezzanine | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Mezzanine | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Mezzanine | Level 3
Benefit Plan Information
Fair value of plan assets	3	3
Postretirement Benefits | Real estate
Benefit Plan Information
Fair value of plan assets	4	4
Postretirement Benefits | Real estate | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Real estate | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets	4	4
Postretirement Benefits | Secondary
Benefit Plan Information
Fair value of plan assets	5	6
Postretirement Benefits | Secondary | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Secondary | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Secondary | Level 3
Benefit Plan Information
Fair value of plan assets	5	6
Postretirement Benefits | Venture capital
Benefit Plan Information
Fair value of plan assets	91	100
Postretirement Benefits | Venture capital | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Venture capital | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Venture capital | Level 3
Benefit Plan Information
Fair value of plan assets	91	100
Postretirement Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets	55	57
Postretirement Benefits | Absolute Return | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets	27	40
Postretirement Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	28	17	20
Postretirement Benefits | Hedge funds and hedge fund of funds
Benefit Plan Information
Fair value of plan assets	48	43
Postretirement Benefits | Hedge funds and hedge fund of funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Hedge funds and hedge fund of funds | Level 2
Benefit Plan Information
Fair value of plan assets	27	40
Postretirement Benefits | Hedge funds and hedge fund of funds | Level 3
Benefit Plan Information
Fair value of plan assets	21	3
Postretirement Benefits | Bank loan and other fixed income funds
Benefit Plan Information
Fair value of plan assets	7	14
Postretirement Benefits | Bank loan and other fixed income funds | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Bank loan and other fixed income funds | Level 2
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Bank loan and other fixed income funds | Level 3
Benefit Plan Information
Fair value of plan assets	7	14
Postretirement Benefits | Commodities
Benefit Plan Information
Fair value of plan assets	7	18
Postretirement Benefits | Commodities | Level 1
Benefit Plan Information
Fair value of plan assets	0	0
Postretirement Benefits | Commodities | Level 2
Benefit Plan Information
Fair value of plan assets	3	14
Postretirement Benefits | Commodities | Level 3
Benefit Plan Information
Fair value of plan assets	4	4	3
Postretirement Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets	101	61
Postretirement Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets	51	10
Postretirement Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets	50	51
Postretirement Benefits | Cash and Cash Equivalents | Level 3
Benefit Plan Information
Fair value of plan assets	$ 0	$ 0

XML

Stock-Based Compensation (Details 4) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2007	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restricted Stock and Restricted Stock Units
Unit and Shares Activity:
Number of Awards - Nonvested - Beginning balance		4,858,972	4,812,657	4,379,480
Number of Awards - Granted - Annual		968,522	889,448	902,549
Number of Awards - Granted - Other		99,337	351,624	527,823
Number of Awards - Vested		(2,594,468)	(1,077,816)	(948,233)
Number of Awards - Forfeited		(70,801)	(116,941)	(48,962)
Number of Awards - Nonvested - Ending balance		3,261,562	4,858,972	4,812,657
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Weighted Average Grant Date Fair Value - Nonvested - Beginning balance		$ 73.02	$ 68.75	$ 68.85
Weighted Average Grant Date Fair Value - Granted - Annual		$ 87.92	$ 89.46	$ 78.81
Weighted Average Grant Date Fair Value - Granted - Other		$ 85.07	$ 87.07	$ 70.09
Weighted Average Grant Date Fair Value - Vested		$ 63.51	$ 72.21	$ 79.12
Weighted Average Grant Date Fair Value - Forfeited		$ 82.65	$ 72.01	$ 76.22
Weighted Average Grant Date Fair Value - Nonvested - Ending balance		$ 85.17	$ 73.02	$ 68.75
Weighted average life of remaining vesting period		25 months
Vesting period, generally		3 years
Vesting period of "buyout" grant of restricted stock units	5 years
Fair value that vested		$ 228	$ 102	$ 75
Compensation expense yet to be recognized		79
Tax benefit realized from vesting		86	36	20
Performance Shares
Unit and Shares Activity:
Number of Awards - Nonvested - Beginning balance		878,872	760,645	0
Number of Awards - Granted - Annual		467,531	415,024	370,575
Number of Awards - Vested		0	(206,410)	0
Number of Awards - Performance change		(178,838)	(39,323)	396,390
Number of Awards - Forfeited		(78,481)	(51,064)	(6,320)
Number of Awards - Nonvested - Ending balance		1,089,084	878,872	760,645
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Weighted Average Grant Date Fair Value - Nonvested - Beginning balance		$ 78.55	$ 73.99	$ 0
Weighted Average Grant Date Fair Value - Granted - Annual		$ 81.55	$ 84.58	$ 74.46
Weighted Average Grant Date Fair Value - Vested		$ 0	$ 72.77	$ 0
Weighted Average Grant Date Fair Value - Performance change		$ 81.27	$ 82.10	$ 73.55
Weighted Average Grant Date Fair Value - Forfeited		$ 80.21	$ 80.20	$ 73.92
Weighted Average Grant Date Fair Value - Nonvested - Ending balance		$ 79.27	$ 78.55	$ 73.99
Performance criteria, number of key factors		3
Share-based compensation arrangement by share-based payment award, award performance period		3 years
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions, minimum		0.00%
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions, maximum		200.00%
Vesting period, low end of range		1 year
Vesting period, high end of range		3 years
Weighted average life of remaining vesting period		11 months
Fair value that vested			18
Compensation expense yet to be recognized		11
Tax benefit realized from vesting			$ 5

XML

Pension and Postretirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Pension and Postretirement Benefit Plans

Reconciliation of the beginning and ending balances of the benefit obligation and the fair value of plan assets

			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
(Millions)			2012		2011		2012		2011		2012		2011
Change in benefit obligation
	Benefit obligation at beginning of year		$	14,499	$	12,319	$	5,332	$	4,912	$	2,108	$	1,828
	Acquisitions			11		―		26		48		―		―
	Service cost			254		206		124		124		78		61
	Interest cost			587		626		247		261		86		92
	Participant contributions			―		―		5		5		52		56
	Foreign exchange rate changes			―		―		83		(84)		(2)		(9)
	Plan amendments			―		8		(7)		(31)		―		―
	Actuarial (gain) loss			179		2,022		882		318		31		228
	Medicare Part D Reimbursement			―		―		―		―		8		7
	Benefit payments			(726)		(680)		(278)		(221)		(156)		(155)
	Settlements, curtailments, special
		termination benefits and other		26		(2)		―		―		―		―
	Benefit obligation at end of year		$	14,830	$	14,499	$	6,414	$	5,332	$	2,205	$	2,108
Change in plan assets
	Fair value of plan assets at
		beginning of year	$	12,102	$	11,575	$	4,643	$	4,355	$	1,209	$	1,149
	Acquisitions			8		―		―		26		―		―
	Actual return on plan assets			1,645		972		463		272		149		94
	Company contributions			752		237		327		280		67		65
	Participant contributions			―		―		5		5		52		56
	Foreign exchange rate changes			―		―		62		(74)		―		―
	Benefit payments			(726)		(680)		(278)		(221)		(156)		(155)
	Settlements, curtailments, special
		termination benefits and other		―		(2)		―		―		―		―
	Fair value of plan assets at end of year		$	13,781	$	12,102	$	5,222	$	4,643	$	1,321	$	1,209
Funded status at end of year			$	(1,049)	$	(2,397)	$	(1,192)	$	(689)	$	(884)	$	(899)

Amounts recognized in the Consolidated Balance Sheet and accumulated other comprehensive income

			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
(Millions)			2012		2011		2012		2011		2012		2011
Amounts recognized in the
	Consolidated Balance Sheet as of
	Dec. 31,
	Non-current assets		$	―	$	―	$	16	$	40	$	―	$	―
	Accrued benefit cost
		Current liabilities		(43)		(41)		(8)		(8)		(4)		(4)
		Non-current liabilities		(1,006)		(2,356)		(1,200)		(721)		(880)		(895)
	Ending balance		$	(1,049)	$	(2,397)	$	(1,192)	$	(689)	$	(884)	$	(899)
Amounts recognized in accumulated
	other comprehensive income as of
	Dec. 31,
	Net transition obligation (asset)		$	―	$	―	$	(5)	$	(8)	$	―	$	―
	Net actuarial loss (gain)			4,679		5,623		2,458		1,858		1,028		1,171
	Prior service cost (credit)			24		30		(150)		(167)		(197)		(269)
	Ending balance		$	4,703	$	5,653	$	2,303	$	1,683	$	831	$	902

Amounts relating to pension plans with accumulated benefit obligations in excess of plan assets

	Qualified and Non-qualified Pension Plans
	United States				International
(Millions)	2012		2011		2012		2011
Projected benefit obligation	$	505	$	14,499	$	5,122	$	2,983
Accumulated benefit obligation		492		13,804		4,808		2,740
Fair value of plan assets		8		12,102		4,038		2,321

Components of net periodic benefit cost and other amounts recognized in other comprehensive income

Components of net periodic cost and other amounts recognized in other comprehensive income
			Qualified and Non-qualified
			Pension Benefits												Postretirement
			United States						International						Benefits
(Millions)			2012		2011		2010		2012		2011		2010		2012		2011		2010
Net periodic benefit cost (benefit)
	Service cost		$	254	$	206	$	201	$	124	$	124	$	105	$	78	$	61	$	55
	Interest cost			587		626		638		247		261		241		86		92		88
	Expected return on plan assets			(992)		(927)		(929)		(295)		(289)		(278)		(84)		(77)		(83)
	Amortization of transition
		(asset) obligation		―		―		―		(1)		(2)		1		―		―		―
	Amortization of prior service
		cost (benefit)		5		11		13		(17)		(14)		(4)		(72)		(72)		(94)
	Amortization of net actuarial (gain)
		loss		470		334		221		122		116		84		108		102		85
Net periodic benefit cost (benefit)			$	324	$	250	$	144	$	180	$	196	$	149	$	116	$	106	$	51
Settlements, curtailments, special
	termination benefits and other			26		1		―		4		2		(22)		―		―		―
Net periodic benefit cost (benefit)
	after settlements, curtailments,
	special termination benefits
	and other		$	350	$	251	$	144	$	184	$	198	$	127	$	116	$	106	$	51
Other changes in plan assets and
	benefit obligations recognized in
	other comprehensive (income)
	loss
	Transition (asset) obligation		$	―	$	―	$	―	$	―	$	(2)	$	(1)	$	―	$	―	$	―
	Amortization of transition (asset)
		obligation		―		―		―		1		2		(1)		―		―		―
	Prior service cost (benefit)			―		8		―		(7)		(32)		(91)		―		―		69
	Amortization of prior service cost
		(benefit)		(5)		(11)		(13)		17		14		4		72		72		94
	Net actuarial (gain) loss			(470)		1,976		227		707		315		104		(33)		212		89
	Amortization of net actuarial (gain)
		loss		(470)		(334)		(221)		(122)		(116)		(84)		(108)		(102)		(85)
	Foreign currency			―		―		―		24		(17)		(19)		(1)		(2)		(1)
Total recognized in other
	comprehensive (income) loss		$	(945)	$	1,639	$	(7)	$	620	$	164	$	(88)	$	(70)	$	180	$	166
Total recognized in net periodic
	benefit cost (benefit) and other
	comprehensive (income) loss		$	(595)	$	1,890	$	137	$	804	$	362	$	39	$	46	$	286	$	217

Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over next fiscal year

Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over the next fiscal year
	Qualified and Non-qualified Pension Benefits
							Postretirement
(Millions)	United States		International		Benefits
Amortization of transition (asset) obligation	$	―	$	(1)	$	―
Amortization of prior service cost (benefit)		5		(17)		(66)
Amortization of net actuarial (gain) loss		399		159		96
Total amortization expected over the next fiscal year	$	404	$	141	$	30

Weighted-average assumptions used to determine benefit obligations and net cost

Weighted-average assumptions used to determine benefit obligations
		Qualified and Non-qualified Pension Benefits												Postretirement
		United States						International						Benefits
		2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate		4.14	%	4.15	%	5.23	%	3.78	%	4.58	%	5.04	%	4.00	%	4.04	%	5.09	%
Compensation rate
	increase	4.00	%	4.00	%	4.00	%	3.31	%	3.52	%	3.59	%	N/A		N/A		N/A

Weighted-average assumptions used to determine net cost for years ended
		Qualified and Non-qualified Pension Benefits												Postretirement
		United States						International						Benefits
		2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate		4.15	%	5.23	%	5.77	%	4.58	%	5.04	%	5.30	%	4.04	%	5.09	%	5.62	%
Expected return
	on assets	8.25	%	8.50	%	8.50	%	6.38	%	6.58	%	6.90	%	7.30	%	7.38	%	7.30	%
Compensation rate
	increase	4.00	%	4.00	%	4.30	%	3.52	%	3.59	%	3.72	%	N/A		N/A		N/A

Estimated future pension and postretirement benefit payments

Future Pension and Postretirement Benefit Payments
The following table provides the estimated pension and postretirement benefit payments that are payable from the plans to participants.
	Qualified and Non-qualified
	Pension Benefits				Postretirement
(Millions)	United States		International		Benefits
2013 Benefit Payments	$	760	$	211	$	113
2014 Benefit Payments		784		223		126
2015 Benefit Payments		808		236		138
2016 Benefit Payments		831		248		153
2017 Benefit Payments		854		256		154
Following five years		4,566		1,463		787

United States Qualified and Non-qualified Pension Benefits

Defined Benefit Plans and Other Postretirement Benefit Plans

Fair values of the assets held by the plans by asset category

			Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)			Level 1				Level 2				Level 3				Dec. 31,
Asset Class			2012		2011		2012		2011		2012		2011		2012		2011
Equities
	U.S. equities		$	1,662	$	1,186	$	11	$	14	$	5	$	5	$	1,678	$	1,205
	Non-U.S. equities			1,332		1,095		―		1		―		―		1,332		1,096
	Derivatives			―		―		5		(3)		―		―		5		(3)
	EAFE index funds			―		―		250		476		―		―		250		476
	Index funds			―		―		156		128		1		1		157		129
	Long/short equity			―		―		―		―		477		436		477		436
Total Equities			$	2,994	$	2,281	$	422	$	616	$	483	$	442	$	3,899	$	3,339
Fixed Income
	U.S. government securities		$	844	$	776	$	796	$	869	$	―	$	―	$	1,640	$	1,645
	Non-U.S. government
		securities		―		―		378		314		―		―		378		314
	Preferred and convertible
		securities		4		4		―		5		―		―		4		9
	U.S. corporate bonds			196		168		1,249		1,049		―		5		1,445		1,222
	Non-U.S. corporate bonds			―		―		286		244		―		―		286		244
	Asset-backed securities			―		―		21		23		―		―		21		23
	Collateralized mortgage
		obligations		―		―		43		137		―		―		43		137
	Private placements			―		―		164		125		2		69		166		194
	Derivative instruments			―		2		76		200		―		―		76		202
	Other			―		―		29		24		―		―		29		24
Total Fixed Income			$	1,044	$	950	$	3,042	$	2,990	$	2	$	74	$	4,088	$	4,014
Private Equity
	Buyouts		$	―	$	―	$	―	$	―	$	662	$	618	$	662	$	618
	Derivative instruments			―		―		―		―		(51)		―		(51)		―
	Direct investments			―		―		―		―		129		―		129		―
	Distressed debt			―		―		―		―		301		333		301		333
	Growth equity			7		1		―		―		84		27		91		28
	Mezzanine			―		―		―		―		82		90		82		90
	Real estate			―		―		―		―		136		148		136		148
	Secondary			―		―		―		―		166		181		166		181
	Venture capital			―		―		―		―		627		665		627		665
Total Private Equity			$	7	$	1	$	―	$	―	$	2,136	$	2,062	$	2,143	$	2,063
Absolute Return
	Hedge funds and hedge fund of
		funds	$	―	$	―	$	833	$	1,235	$	664	$	88	$	1,497	$	1,323
	Bank loan and other fixed
		income funds		―		―		―		―		201		432		201		432
Total Absolute Return			$	―	$	―	$	833	$	1,235	$	865	$	520	$	1,698	$	1,755
Commodities			$	―	$	―	$	102	$	435	$	107	$	105	$	209	$	540
Cash and Cash Equivalents			$	429	$	295	$	1,547	$	600	$	―	$	―	$	1,976	$	895
Total			$	4,474	$	3,527	$	5,946	$	5,876	$	3,593	$	3,203	$	14,013	$	12,606
Other items to reconcile to fair
	value of plan assets														$	(232)	$	(504)
Fair value of plan assets															$	13,781	$	12,102

Summary of changes in the fair values of the plans level 3 assets

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Commodities		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	506	$	144	$	2,075	$	623	$	111	$	3,459
Net transfers into / (out of) level 3			―		5		―		(59)		―		(54)
Purchases, sales, issuances, and
	settlements, net		(52)		(97)		(108)		3		―		(254)
Realized gain / (loss)			3		21		(50)		5		―		(21)
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(8)		(17)		133		(36)		―		72
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		(7)		18		12		(16)		(6)		1
Ending balance at Dec. 31, 2011			442		74		2,062		520		105		3,203
Net transfers into / (out of) level 3			―		(5)		―		472		―		467
Purchases, sales, issuances, and
	settlements, net		(1)		(73)		(108)		(225)		―		(407)
Realized gain / (loss)			―		25		120		76		―		221
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(1)		(19)		(3)		(49)		(1)		(73)
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		43		―		65		71		3		182
Ending balance at Dec. 31, 2012		$	483	$	2	$	2,136	$	865	$	107	$	3,593

International Qualified and Non-qualified Pension Benefits

Defined Benefit Plans and Other Postretirement Benefit Plans

Fair values of the assets held by the plans by asset category

		Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)		Level 1				Level 2				Level 3				Dec. 31,
Asset Class		2012		2011		2012		2011		2012		2011		2012		2011
Equities
	Growth equities	$	628	$	374	$	133	$	141	$	―	$	―	$	761	$	515
	Value equities		468		401		23		98		―		―		491		499
	Core equities		88		227		376		430		5		5		469		662
Total Equities		$	1,184	$	1,002	$	532	$	669	$	5	$	5	$	1,721	$	1,676
Fixed Income
	Domestic government debt	$	297	$	188	$	694	$	579	$	―	$	6	$	991	$	773
	Foreign government debt		170		93		445		647		2		2		617		742
	Corporate debt securities		―		113		630		404		18		19		648		536
	Mortgage backed debt		―		―		31		25		―		―		31		25
	Other debt obligations		―		―		268		39		16		12		284		51
Total Fixed Income		$	467	$	394	$	2,068	$	1,694	$	36	$	39	$	2,571	$	2,127
Private Equity
	Private equity funds	$	―	$	―	$	―	$	47	$	22	$	20	$	22	$	67
	Real estate		3		3		42		38		49		47		94		88
Total Private Equity		$	3	$	3	$	42	$	85	$	71	$	67	$	116	$	155
Absolute Return
	Hedge funds	$	―	$	―	$	75	$	172	$	50	$	―	$	125	$	172
	Insurance		―		―		―		―		433		369		433		369
	Derivatives		―		―		20		58		―		―		20		58
	Other		―		―		24		2		2		1		26		3
Total Absolute Return		$	―	$	―	$	119	$	232	$	485	$	370	$	604	$	602
Cash and Cash Equivalents		$	211	$	106	$	21	$	2	$	―	$	―	$	232	$	108
Total		$	1,865	$	1,505	$	2,782	$	2,682	$	597	$	481	$	5,244	$	4,668
Other items to reconcile to fair
	value of plan assets													$	(22)	$	(25)
Fair value of plan assets														$	5,222	$	4,643

Summary of changes in the fair values of the plans level 3 assets

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	98	$	34	$	70	$	344	$	546
Net transfers into / (out of) level 3			(93)		―		(21)		18		(96)
Foreign currency exchange			―		(1)		(1)		(10)		(12)
Purchases, sales, issuances, and
	settlements, net		―		―		17		3		20
Realized gain / (loss)			―		―		―		1		1
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		6		2		14		22
Ending balance at Dec. 31, 2011			5		39		67		370		481
Net transfers into / (out of) level 3			―		―		―		―		―
Foreign currency exchange			―		2		(4)		2		―
Purchases, sales, issuances, and
	settlements, net		―		(2)		11		92		101
Realized gain / (loss)			―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		(3)		(3)		21		15
Ending balance at Dec. 31, 2012		$	5	$	36	$	71	$	485	$	597

Postretirement Benefits

Defined Benefit Plans and Other Postretirement Benefit Plans

Fair values of the assets held by the plans by asset category

			Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)			Level 1				Level 2				Level 3				Dec. 31,
Asset Class			2012		2011		2012		2011		2012		2011		2012		2011
Equities
	U.S. equities		$	466	$	396	$	―	$	―	$	―	$	―	$	466	$	396
	Non-U.S. equities			54		44		―		―		―		―		54		44
	EAFE index funds			―		―		8		15		―		―		8		15
	Index funds			―		―		42		43		―		―		42		43
	Long/short equity			―		―		―		―		16		14		16		14
Total Equities			$	520	$	440	$	50	$	58	$	16	$	14	$	586	$	512
Fixed Income
	U.S. government securities		$	63	$	55	$	217	$	197	$	―	$	―	$	280	$	252
	Non-U.S. government
		securities		―		―		16		12		―		―		16		12
	U.S. corporate bonds			6		6		68		62		―		―		74		68
	Non-U.S. corporate bonds			―		―		16		14		―		―		16		14
	Asset-backed securities			―		―		6		5		―		―		6		5
	Collateralized mortgage
		obligations		―		―		4		7		―		―		4		7
	Private placements			―		―		11		9		―		2		11		11
	Derivative instruments			―		―		2		7		―		―		2		7
	Other			―		―		1		1		―		―		1		1
Total Fixed Income			$	69	$	61	$	341	$	314	$	―	$	2	$	410	$	377
Private Equity
	Buyouts		$	―	$	―	$	―	$	―	$	51	$	56	$	51	$	56
	Derivative instruments			―		―		―		―		(2)		―		(2)		―
	Direct investments			―		―		―		―		4		―		4		―
	Distressed debt			―		―		―		―		11		17		11		17
	Growth equity			―		―		―		―		3		1		3		1
	Mezzanine			―		―		―		―		3		3		3		3
	Real estate			―		―		―		―		4		4		4		4
	Secondary			―		―		―		―		5		6		5		6
	Venture capital			―		―		―		―		91		100		91		100
Total Private Equity			$	―	$	―	$	―	$	―	$	170	$	187	$	170	$	187
Absolute Return
	Hedge funds and hedge fund of
		funds	$	―	$	―	$	27	$	40	$	21	$	3	$	48	$	43
	Bank loan and other fixed
		income funds		―		―		―		―		7		14		7		14
Total Absolute Return			$	―	$	―	$	27	$	40	$	28	$	17	$	55	$	57
Commodities			$	―	$	―	$	3	$	14	$	4	$	4	$	7	$	18
Cash and Cash Equivalents			$	51	$	10	$	50	$	51	$	―	$	―	$	101	$	61
Total			$	640	$	511	$	471	$	477	$	218	$	224	$	1,329	$	1,212
Other items to reconcile to fair
	value of plan assets														$	(8)	$	(3)
Fair value of plan assets															$	1,321	$	1,209

Summary of changes in the fair values of the plans level 3 assets

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Commodities		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	16	$	4	$	226	$	20	$	3	$	269
Net transfers into / (out of) level 3			―		―		―		(2)		―		(2)
Purchases, sales, issuances, and
	settlements, net		(1)		(3)		(43)		1		―		(46)
Realized gain / (loss)			―		1		(31)		―		―		(30)
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(1)		(1)		20		(1)		―		17
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		1		15		(1)		1		16
Ending balance at Dec. 31, 2011			14		2		187		17		4		224
Net transfers into / (out of) level 3			―		―		―		15		―		15
Purchases, sales, issuances, and
	settlements, net		―		(2)		(27)		(7)		―		(36)
Realized gain / (loss)			―		1		11		2		―		14
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		(1)		(4)		(1)		―		(6)
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		2		―		3		2		―		7
Ending balance at Dec. 31, 2012		$	16	$	―	$	170	$	28	$	4	$	218

XML

Supplemental Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other current assets
Prepaid expenses and other	$ 555	$ 676
Deferred income taxes	472	385
Derivative assets-current	49	107
Product and other insurance receivables	125	109
Total other current assets	1,201	1,277
Investments
Equity method	105	98
Cost method	47	47
Other investments	11	10
Total investments	163	155
Other assets
Deferred income taxes	578	1,018
Product and other insurance receivables	139	151
Cash surrender value of life insurance policies	230	223
Other	270	264
Total other assets	1,217	1,656
Other current liabilities
Accrued trade payables	516	516
Deferred income	471	389
Derivative liabilities	106	49
Restructuring actions	31	6
Employee benefits and withholdings	178	160
Product and other claims	147	159
Property and other taxes	87	94
Pension and postretirement benefits	55	53
Deferred income taxes	45	23
Other	645	636
Total other current liabilities	2,281	2,085
Other liabilities
Long term income taxes payable	454	595
Employee benefits	332	351
Product and other claims	314	329
Long-term obligations under capital leases	71	79
Deferred income	29	19
Deferred income taxes	167	251
Other	267	233
Total other liabilities	1,634	1,857
Drafts payable
Drafts payable on demand included in Accounts payable	$ 74	$ 82

XML

Marketable Securities (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Marketable securities classification
Current marketable securities	$ 1,648	$ 1,461
Non-current marketable securities	1,162	896
Total marketable securities	2,810	2,357
U.S. government agency securities
Marketable securities classification
Current marketable securities	162	119
Non-current marketable securities	125	361
Foreign government debt
Marketable securities classification
Current marketable securities	16	8
Non-current marketable securities	51	15
Corporate debt securities
Marketable securities classification
Current marketable securities	471	413
Non-current marketable securities	494	255
Commercial paper
Marketable securities classification
Current marketable securities	116	30
Certificates of deposit/time deposits
Marketable securities classification
Current marketable securities	41	49
U.S. treasury securities
Marketable securities classification
Current marketable securities	54	0
Non-current marketable securities	18	34
U.S. municipal securities
Marketable securities classification
Current marketable securities	13	9
Non-current marketable securities	14	5
Asset-backed securities:
Marketable securities classification
Current marketable securities	775	833
Non-current marketable securities	453	222
Asset-backed securities Automobile loan related
Marketable securities classification
Current marketable securities	567	530
Non-current marketable securities	375	188
Asset-backed securities Credit card related
Marketable securities classification
Current marketable securities	123	244
Non-current marketable securities	34	24
Asset-backed securities Equipment lease related
Marketable securities classification
Current marketable securities	54	54
Non-current marketable securities	36	10
Asset-backed securities Other asset-backed securities
Marketable securities classification
Current marketable securities	31	5
Non-current marketable securities	8	0
Auction rate securities
Marketable securities classification
Non-current marketable securities	$ 7	$ 4

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Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Currently payable
Federal	$ 743	$ 431	$ 837
State	75	51	73
International	918	861	796
Deferred
Federal	(3)	181	55
State	10	12	43
International	97	138	(212)
Total provision for income taxes	$ 1,840	$ 1,674	$ 1,592

XML

Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Significant Accounting Policies
Asset retirement obligation liability	$ 86	$ 79
Intangible assets useful life, low end of range	1 year
Intangible assets useful life, high end of range	20 years
Advertising and merchandising expense	482	518	512
Research, development and related expenses	1,634	1,570	1,434
Research and development expense	1,079	1,036	919
Deferred tax assets valuation allowance	$ 29	$ 82

XML

Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 4,511	$ 4,357	$ 4,163
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	1,288	1,236	1,120
Company pension and postretirement contributions	(1,146)	(582)	(618)
Company pension and postretirement expense	650	555	322
Stock-based compensation expense	223	253	274
Deferred income taxes	33	177	(170)
Excess tax benefits from stock-based compensation	(62)	(53)	(53)
Changes in assets and liabilities
Accounts receivable	(133)	(205)	(189)
Inventories	(251)	(196)	(404)
Accounts payable	72	(83)	146
Accrued income taxes (current and long-term)	90	(45)	255
Product and other insurance receivables and claims	(32)	9	49
Other - net	57	(139)	279
Net cash provided by operating activities	5,300	5,284	5,174
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(1,484)	(1,379)	(1,091)
Proceeds from sale of PP&E and other assets	41	55	25
Acquisitions, net of cash acquired	(1,046)	(649)	(1,830)
Purchases of marketable securities and investments	(5,492)	(4,162)	(3,287)
Proceeds from sale of marketable securities and investments	3,151	1,679	1,995
Proceeds from maturities of marketable securities	2,130	1,738	1,565
Other investing	14	0	(3)
Net cash used in investing activities	(2,686)	(2,718)	(2,626)
Cash Flows from Financing Activities
Change in short-term debt - net	(36)	11	(24)
Repayment of debt (maturities greater than 90 days)	(612)	(1,429)	(556)
Proceeds from debt (maturities greater than 90 days)	1,370	1,111	108
Purchases of treasury stock	(2,204)	(2,701)	(854)
Proceeds from issuances of treasury stock pursuant to stock option and benefit plans	1,012	902	666
Dividends paid to shareholders	(1,635)	(1,555)	(1,500)
Excess tax benefits from stock-based compensation	62	53	53
Other - net	(15)	(67)	(77)
Net cash used in financing activities	(2,058)	(3,675)	(2,184)
Effect of exchange rate changes on cash and cash equivalents	108	(49)	(27)
Net increase/(decrease) in cash and cash equivalents	664	(1,158)	337
Cash and cash equivalents at beginning of year	2,219	3,377	3,040
Cash and cash equivalents at end of year	$ 2,883	$ 2,219	$ 3,377

XML

Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accruals not currently deductible
Employee benefit costs	$ 115	$ 96
Product and other claims	161	155
Miscellaneous accruals	137	133
Pension costs	969	1,183
Stock-based compensation	415	483
Net operating/capital loss carryforwards	304	392
Foreign tax credits	285	286
Inventory	189	174
Other	18	0
Gross deferred tax assets	2,593	2,902
Valuation allowance	(29)	(82)
Total deferred tax assets	2,564	2,820
Deferred tax liabilities:
Product and other insurance receivables	(60)	(63)
Accelerated depreciation	(858)	(745)
Intangible amortization	(808)	(799)
Other	0	(84)
Total deferred tax liabilities	(1,726)	(1,691)
Net deferred tax asset	$ 838	$ 1,129

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Geographic Areas (Tables)

12 Months Ended

Dec. 31, 2012

Geographic Areas Disclosure

Geographic Areas

													Property, Plant and Equipment - net
	Net Sales						Operating Income
(Millions)	2012		2011		2010		2012		2011		2010		2012		2011
United States	$	10,571	$	10,071	$	9,254	$	1,938	$	1,639	$	1,647	$	4,279	$	3,980
Asia Pacific		9,092		9,108		8,259		2,450		2,523		2,400		2,029		1,887
Europe, Middle East and Africa		6,730		7,076		6,259		1,163		1,150		1,112		1,499		1,271
Latin America and Canada		3,529		3,368		2,906		936		886		787		571		528
Other Unallocated		(18)		(12)		(16)		(4)		(20)		(28)		―		―
Total Company	$	29,904	$	29,611	$	26,662	$	6,483	$	6,178	$	5,918	$	8,378	$	7,666

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Acquisitions (Tables)

12 Months Ended

Dec. 31, 2012

Acquisitions

Allocation of purchase price

	2012 Acquisition Activity
(Millions)			Other		Total
Asset (Liability)	Ceradyne, Inc.		Acquisitions
Accounts receivable	$	55	$	29	$	84
Inventory		112		13		125
Other current assets		36		1		37
Marketable securities		250		―		250
Property, plant, and equipment		238		3		241
Purchased finite-lived intangible assets		127		86		213
Purchased indefinite-lived intangible assets		―		2		2
Purchased goodwill		198		141		339
Accounts payable and other liabilities, net of other assets		(100)		(27)		(127)
Interest bearing debt		(93)		(3)		(96)
Deferred tax asset/(liability)		(25)		3		(22)
Net assets acquired	$	798	$	248	$	1,046
Supplemental information:
Cash paid	$	850	$	248	$	1,098
Less: Cash acquired		52		―		52
Cash paid, net of cash acquired	$	798	$	248	$	1,046

	2011 Acquisitions Activity
(Millions)	Winterthur		Other		Total
Asset (Liability)	Technologie AG		Acquisitions
Accounts receivable	$	45	$	61	$	106
Inventory		69		59		128
Other current assets		6		36		42
Property, plant, and equipment		73		102		175
Purchased finite-lived intangible assets		226		116		342
Purchased goodwill		147		112		259
Accounts payable and other liabilities, net of other assets		(70)		(78)		(148)
Interest bearing debt		(79)		(24)		(103)
Deferred tax asset/(liability)		(58)		(28)		(86)
Net assets acquired	$	359	$	356	$	715
Noncontrolling interest		(56)		―		(56)
Net assets acquired excluding noncontrolling interest	$	303	$	356	$	659
Supplemental information:
Cash paid	$	327	$	376	$	703
Less: Cash acquired		34		20		54
Cash paid, net of cash acquired	$	293	$	356	$	649
Non-cash		10		―		10
Net assets acquired excluding noncontrolling interest	$	303	$	356	$	659

		2010 Acquisitions Activity
				Attenti
(Millions)				Holdings		Cogent		Other
Asset (Liability)		Arizant Inc.		S.A.		Inc.		Acquisitions		Total
Accounts receivable		$	15	$	23	$	34	$	21	$	93
Inventory			36		5		17		19		77
Other current assets			3		7		31		2		43
Marketable securities			―		―		380		―		380
Property, plant, and equipment			38		9		30		29		106
Purchased finite-lived intangible assets			362		90		142		69		663
Purchased goodwill			512		122		295		51		980
Accounts payable and other liabilities, net
	of other assets		(29)		(12)		(88)		(35)		(164)
Interest bearing debt			(31)		(21)		―		(53)		(105)
Deferred tax asset/(liability)			(141)		(16)		(47)		(21)		(225)
Net assets acquired		$	765	$	207	$	794	$	82	$	1,848
Supplemental information:
Cash paid		$	776	$	227	$	946	$	156	$	2,105
Less: Cash acquired			11		20		152		92		275
Cash paid, net of cash acquired		$	765	$	207	$	794	$	64	$	1,830
Non-cash (financed liability)			―		―		―		18		18
Net assets acquired		$	765	$	207	$	794	$	82	$	1,848

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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Significant Accounting Policies

Earnings per share

Earnings Per Share Computations
(Amounts in millions, except per share amounts)			2012		2011		2010
Numerator:
	Net income attributable to 3M		$	4,444	$	4,283	$	4,085
Denominator:
	Denominator for weighted average 3M common shares
		outstanding – basic		693.9		708.5		713.7
	Dilution associated with the Company’s stock-based
		compensation plans		9.4		10.5		11.8
	Denominator for weighted average 3M common shares
		outstanding – diluted		703.3		719.0		725.5
Earnings per share attributable to 3M common shareholders – basic			$	6.40	$	6.05	$	5.72
Earnings per share attributable to 3M common shareholders – diluted			$	6.32	$	5.96	$	5.63

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Geographic Areas (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales	$ 7,387	$ 7,497	$ 7,534	$ 7,486	$ 7,089	$ 7,531	$ 7,680	$ 7,311	$ 29,904	$ 29,611	$ 26,662
Operating Income									6,483	6,178	5,918
Property, plant and equipment - net	8,378				7,666				8,378	7,666
United States
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales									10,571	10,071	9,254
Operating Income									1,938	1,639	1,647
Property, plant and equipment - net	4,279				3,980				4,279	3,980
Asia Pacific
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales									9,092	9,108	8,259
Operating Income									2,450	2,523	2,400
Property, plant and equipment - net	2,029				1,887				2,029	1,887
Europe, Middle East, and Africa
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales									6,730	7,076	6,259
Operating Income									1,163	1,150	1,112
Property, plant and equipment - net	1,499				1,271				1,499	1,271
Latin America and Canada
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales									3,529	3,368	2,906
Operating Income									936	886	787
Property, plant and equipment - net	571				528				571	528
Other Unallocated
Net Sales Operating Income And Long Lived Assets By Geographic Area
Net sales									(18)	(12)	(16)
Operating Income									(4)	(20)	(28)
Property, plant and equipment - net	$ 0				$ 0				$ 0	$ 0

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Supplemental Equity and Comprehensive Income Information (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Amount Reclassified from Accumulated Other Comprehensive Income
Selling, general and administrative expenses	$ 6,102	$ 6,170	$ 5,479
Total before tax	481	(2,146)	156
Tax effect	1,840	1,674	1,592
Net of tax	4,719	2,801	4,257
Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Net of tax	(358)	(399)	(206)
Defined Benefit Pension and Postretirement Plans Adjustment
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	411	(1,977)	(68)
Defined Benefit Pension and Postretirement Plans Adjustment | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Transition asset	1	2	(1)
Prior service benefit	84	75	85
Net actuarial loss	(700)	(552)	(390)
Total before tax	(615)	(475)	(306)
Tax effect	219	168	109
Net of tax	(396)	(307)	(197)
Debt and Equity Securities, Unrealized Gain (Loss)
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	6	0	5
Debt and Equity Securities, Unrealized Gain (Loss) | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Selling, general and administrative expenses	0	(10)	0
Total before tax	0	(10)	0
Tax effect	0	4	0
Net of tax	0	(6)	0
Cash Flow Hedging Instruments, Unrealized Gain (Loss)
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	(69)	84	6
Cash Flow Hedging Instruments, Unrealized Gain (Loss) | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	59	(134)	(15)
Tax effect	(21)	48	6
Net of tax	38	(86)	(9)
Cash Flow Hedging Instruments, Unrealized Gain (Loss) | Foreign currency forward/option contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Cost of sales	41	(87)	(39)
Cash Flow Hedging Instruments, Unrealized Gain (Loss) | Foreign currency forward contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Interest expense	29	(41)	33
Cash Flow Hedging Instruments, Unrealized Gain (Loss) | Commodity price swap contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Cost of sales	(10)	(6)	(9)
Cash Flow Hedging Instruments, Unrealized Gain (Loss) | Interest rate swap contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
Amount Reclassified from Accumulated Other Comprehensive Income
Interest expense	$ (1)	$ 0	$ 0

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Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Data (Unaudited)

Schedule of Quarterly Financial Information

(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2012		Quarter		Quarter		Quarter		Quarter		2012
Net sales		$	7,486	$	7,534	$	7,497	$	7,387	$	29,904
Cost of sales			3,889		3,870		3,935		3,991		15,685
Net income including noncontrolling interest			1,141		1,186		1,180		1,004		4,511
Net income attributable to 3M			1,125		1,167		1,161		991		4,444
Earnings per share attributable to 3M
	common shareholders - basic		1.61		1.68		1.68		1.43		6.40
Earnings per share attributable to 3M
	common shareholders - diluted		1.59		1.66		1.65		1.41		6.32
(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2011		Quarter		Quarter		Quarter		Quarter		2011
Net sales		$	7,311	$	7,680	$	7,531	$	7,089	$	29,611
Cost of sales			3,802		4,040		4,027		3,824		15,693
Net income including noncontrolling interest			1,103		1,177		1,103		974		4,357
Net income attributable to 3M			1,081		1,160		1,088		954		4,283
Earnings per share attributable to 3M
	common shareholders - basic		1.52		1.63		1.54		1.36		6.05
Earnings per share attributable to 3M
	common shareholders - diluted		1.49		1.60		1.52		1.35		5.96

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Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets

Goodwill

	Dec. 31,		2011		2011		Dec. 31,		2012		2012		Dec. 31,
	2010		acquisition		translation		2011		acquisition		translation		2012
(Millions)	Balance		activity		and other		Balance		activity		and other		Balance
Industrial	$	1,761	$	205	$	6	$	1,972	$	204	$	(2)	$	2,174
Safety and Graphics		1,746		3		(36)		1,713		41		(3)		1,751
Electronics and Energy		1,591		6		11		1,608		―		14		1,622
Health Care		1,517		3		(12)		1,508		88		2		1,598
Consumer		205		42		(1)		246		6		(12)		240
Total Company	$	6,820	$	259	$	(32)	$	7,047	$	339	$	(1)	$	7,385

Acquired Intangible Assets

(Millions)		2012		2011
Patents		$	596	$	561
Other amortizable intangible assets (primarily tradenames and customer related
	intangibles)		2,456		2,323
Total gross carrying amount		$	3,052	$	2,884
Accumulated amortization — patents			(421)		(374)
Accumulated amortization — other			(833)		(717)
Total accumulated amortization		$	(1,254)	$	(1,091)
	Total finite-lived intangible assets — net	$	1,798	$	1,793
Non-amortizable intangible assets (primarily tradenames)			127		123
	Total intangible assets — net	$	1,925	$	1,916

Schedule of amortization expense for acquired intangible assets

Amortization expense for the years ended December 31 follows:
(Millions)		2012		2011		2010
Amortization expense	$	233	$	235	$	176

Schedule of expected amortization expense for acquired amortizable intangible assets

Expected amortization expense for acquired amortizable intangible assets recorded as of December 31, 2012 follows:
											After
(Millions)	2013		2014		2015		2016		2017		2017
Amortization expense	$	239	$	214	$	200	$	186	$	171	$	788

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Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

(Millions)		2012		2011
Other current assets
Prepaid expenses and other		$	555	$	676
Deferred income taxes			472		385
Derivative assets-current			49		107
Product and other insurance receivables			125		109
	Total other current assets	$	1,201	$	1,277
Investments
Equity method		$	105	$	98
Cost method			47		47
Other investments			11		10
	Total investments	$	163	$	155
Property, plant and equipment - at cost
Land		$	413	$	377
Buildings and leasehold improvements			6,975		6,587
Machinery and equipment			14,190		13,240
Construction in progress			791		814
Capital leases			156		148
Gross property, plant and equipment			22,525		21,166
Accumulated depreciation			(14,147)		(13,500)
	Property, plant and equipment - net	$	8,378	$	7,666
Other assets
Deferred income taxes		$	578	$	1,018
Product and other insurance receivables			139		151
Cash surrender value of life insurance policies			230		223
Other assets			270		264
	Total other assets	$	1,217	$	1,656
Other current liabilities
Accrued trade payables		$	516	$	516
Deferred income			471		389
Derivative liabilities			106		49
Restructuring actions			31		6
Employee benefits and withholdings			178		160
Product and other claims			147		159
Property and other taxes			87		94
Pension and postretirement benefits			55		53
Deferred income taxes			45		23
Other			645		636
	Total other current liabilities	$	2,281	$	2,085
Other liabilities
Long term income taxes payable		$	454	$	595
Employee benefits			332		351
Product and other claims			314		329
Capital lease obligations			71		79
Deferred income			29		19
Deferred income taxes			167		251
Other			267		233
	Total other liabilities	$	1,634	$	1,857

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Supplemental Share Information	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Supplemental Share Information Treasury Stock
Treasury Stock, Shares, Beginning balance	249,063,015	232,055,448	233,433,937
Reacquired stock	25,054,207	31,331,469	10,572,666
Issuances pursuant to stock options and benefit plans	(17,175,816)	(14,323,902)	(11,951,155)
Treasury Stock, Shares, Ending balance	256,941,406	249,063,015	232,055,448

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Supplemental Equity and Comprehensive Income Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Equity and Comprehensive Income Information

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component
(Millions)		Cumulative Translation Adjustment		Defined Benefit Pension and Postretirement Plans Adjustment		Debt and Equity Securities, Unrealized Gain (Loss)		Cash Flow Hedging Instruments, Unrealized Gain (Loss)		Total Accumulated Other Comprehen-sive Income (Loss)
Balance at December 31, 2009, net of tax		$	122	$	(3,831)	$	(9)	$	(36)	$	(3,754)
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		213		(374)		5		(9)		(165)
	Amounts reclassified out		―		306		―		15		321
Total other comprehensive income (loss),
	before tax		213		(68)		5		6		156
Tax effect			(8)		28		(2)		(2)		16
Total other comprehensive income (loss),
	net of tax		205		(40)		3		4		172
Purchase of subsidiary shares, net of tax			47		(8)		―		―		39
Balance at December 31, 2010, net of tax		$	374	$	(3,879)	$	(6)	$	(32)	$	(3,543)

Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		(253)		(2,452)		(10)		(50)		(2,765)
	Amounts reclassified out		―		475		10		134		619
Total other comprehensive income (loss),
	before tax		(253)		(1,977)		―		84		(2,146)
Tax effect			(7)		701		―		(30)		664
Total other comprehensive income (loss),
	net of tax		(260)		(1,276)		―		54		(1,482)
Balance at December 31, 2011, net of tax		$	114	$	(5,155)	$	(6)	$	22	$	(5,025)

Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		133		(204)		6		(10)		(75)
	Amounts reclassified out		―		615		―		(59)		556
Total other comprehensive income (loss),
	before tax		133		411		6		(69)		481
Tax effect			(17)		(211)		(2)		24		(206)
Total other comprehensive income (loss),
	net of tax		116		200		4		(45)		275
Balance at December 31, 2012, net of tax		$	230	$	(4,955)	$	(2)	$	(23)	$	(4,750)

Reclassifications Out of Accumulated Other Comprehensive Income

Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
			Amount Reclassified from
(Millions)			Accumulated Other Comprehensive Income					Location on Income Statement
Details about Accumulated Other Comprehensive Income Components		Year ended December 31, 2012		Year ended December 31, 2011		Year ended December 31, 2010
Gains (losses) associated with, defined benefit pension and postretirement plans amortization
	Transition asset	$	1	$	2	$	(1)	See Note 10
	Prior service benefit		84		75		85	See Note 10
	Net actuarial loss		(700)		(552)		(390)	See Note 10
Total before tax			(615)		(475)		(306)
Tax effect			219		168		109	Provision for income taxes
Net of tax		$	(396)	$	(307)	$	(197)
Debt and equity security gains (losses)
	Sales or impairments of securities	$	―	$	(10)	$	―	Selling, general and administrative expenses
Total before tax			―		(10)		―
Tax effect			―		4		―	Provision for income taxes
Net of tax		$	―	$	(6)	$	―
Cash flow hedging instruments gains (losses)
	Foreign currency forward/option contracts	$	41	$	(87)	$	(39)	Cost of sales
	Foreign currency forward contracts		29		(41)		33	Interest expense
	Commodity price swap contracts		(10)		(6)		(9)	Cost of sales
	Interest rate swap contracts		(1)		―		―	Interest expense
Total before tax			59		(134)		(15)
Tax effect			(21)		48		6	Provision for income taxes
Net of tax		$	38	$	(86)	$	(9)
Total reclassifications for the period, net of tax		$	(358)	$	(399)	$	(206)

Change in 3M Company shareholders' equity from net income attributable to 3M and transfers from (to) noncontrolling interest

(Millions)		2010
Net income attributable to 3M		$	4,085
Transfers from noncontrolling interest			43
Change in 3M Company shareholders’ equity from net income attributable to 3M and
	transfers from noncontrolling interest	$	4,128

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Derivatives (Details 6) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	$ 72	$ 135
Net Amounts of Derivative Assets	47	121
Derivatives Subject to Master Netting Agreements
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	67	101
Gross Amount of Eligible Offsetting Recognized Derivative Liabilities	25	14
Cash Collateral Received	0	0
Net Amounts of Derivative Assets	42	87
Derivatives Not Subject to Master Netting Agreements
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	5	34
Net Amounts of Derivative Assets	$ 5	$ 34

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year

		Capital Leases		Operating Leases
(Millions)
2013		$	22	$	194
2014			21		158
2015			8		119
2016			7		77
2017			4		68
After 2017			34		119
	Total	$	96	$	735
Less: Amounts representing interest			6
Present value of future minimum lease payments			90
Less: Current obligations under capital leases			19
Long-term obligations under capital leases		$	71

Accrued Liabilities and Insurance Receivables Related to Legal Proceedings

Liability and Receivable Balances
At December 31
(Millions)	2012		2011		2010
Respirator mask/asbestos liabilities	$	154	$	130	$	126
Respirator mask/asbestos insurance receivables		87		121		122
Environmental remediation liabilities	$	29	$	28	$	24
Environmental remediation insurance receivables		11		15		15
Other environmental liabilities	$	57	$	75	$	90
Other environmental insurance receivables		15		―		―

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Supplemental Balance Sheet Information (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 22,525	$ 21,166
Less: Accumulated depreciation	(14,147)	(13,500)
Property, plant and equipment - net	8,378	7,666
Accumulated depreciation for capital leases included in Accumulated depreciation	73	60
Land
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	413	377
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	6,975	6,587
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	14,190	13,240
Construction in progress
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	791	814
Capital leases
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 156	$ 148

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Pension and Postretirement Benefit Plans (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Amounts recognized in the Consolidated Balance Sheet
Non-current assets	$ 16	$ 40
Accrued benefit cost
Current liabilities	(55)	(53)
Non-current liabilities	(3,086)	(3,972)
Qualified and Non-qualified Pension Benefits
Change in plan assets
Company contributions	1,079	517	556
United States Qualified and Non-qualified Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year	14,499	12,319
Acquisitions	11	0
Service cost	254	206	201
Interest cost	587	626	638
Participant contributions	0	0
Foreign exchange rate changes	0	0
Plan amendments	0	8
Actuarial (gain) loss	179	2,022
Medicare Part D Reimbursement	0	0
Benefit payments	(726)	(680)
Settlements, curtailments, special termination benefits and other	26	(2)
Benefit obligation at end of year	14,830	14,499	12,319
Change in plan assets
Fair value, beginning balance	12,102	11,575
Acquisitions	8	0
Actual return on plan assets	1,645	972
Company contributions	752	237	290
Participant contributions	0	0
Foreign exchange rate changes	0	0
Benefit payments	(726)	(680)
Settlements, curtailments, special termination benefits and other	0	(2)
Fair value, ending balance	13,781	12,102	11,575
Funded status at end of year	(1,049)	(2,397)
Amounts recognized in the Consolidated Balance Sheet
Non-current assets	0	0
Accrued benefit cost
Current liabilities	(43)	(41)
Non-current liabilities	(1,006)	(2,356)
Ending balance	(1,049)	(2,397)
Amounts recognized in accumulated other comprehensive income
Net transition obligation (asset)	0	0
Net actuarial loss (gain)	4,679	5,623
Prior service cost (credit)	24	30
Ending balance	4,703	5,653
Accumulated benefit obligations in excess of plan assets
Projected benefit obligation	505	14,499
Accumulated benefit obligation	492	13,804
Fair value of plan assets	8	12,102
Total Accumulated Benefit Obligation	14,127	13,804
International Qualified and Non-qualified Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year	5,332	4,912
Acquisitions	26	48
Service cost	124	124	105
Interest cost	247	261	241
Participant contributions	5	5
Foreign exchange rate changes	83	(84)
Plan amendments	(7)	(31)
Actuarial (gain) loss	882	318
Medicare Part D Reimbursement	0	0
Benefit payments	(278)	(221)
Settlements, curtailments, special termination benefits and other	0	0
Benefit obligation at end of year	6,414	5,332	4,912
Change in plan assets
Fair value, beginning balance	4,643	4,355
Acquisitions	0	26
Actual return on plan assets	463	272
Company contributions	327	280	266
Participant contributions	5	5
Foreign exchange rate changes	62	(74)
Benefit payments	(278)	(221)
Settlements, curtailments, special termination benefits and other	0	0
Fair value, ending balance	5,222	4,643	4,355
Funded status at end of year	(1,192)	(689)
Amounts recognized in the Consolidated Balance Sheet
Non-current assets	16	40
Accrued benefit cost
Current liabilities	(8)	(8)
Non-current liabilities	(1,200)	(721)
Ending balance	(1,192)	(689)
Amounts recognized in accumulated other comprehensive income
Net transition obligation (asset)	(5)	(8)
Net actuarial loss (gain)	2,458	1,858
Prior service cost (credit)	(150)	(167)
Ending balance	2,303	1,683
Accumulated benefit obligations in excess of plan assets
Projected benefit obligation	5,122	2,983
Accumulated benefit obligation	4,808	2,740
Fair value of plan assets	4,038	2,321
Total Accumulated Benefit Obligation	5,942	4,889
Postretirement Benefits
Change in benefit obligation
Benefit obligation at beginning of year	2,108	1,828
Acquisitions	0	0
Service cost	78	61	55
Interest cost	86	92	88
Participant contributions	52	56
Foreign exchange rate changes	(2)	(9)
Plan amendments	0	0
Actuarial (gain) loss	31	228
Medicare Part D Reimbursement	8	7
Benefit payments	(156)	(155)
Settlements, curtailments, special termination benefits and other	0	0
Benefit obligation at end of year	2,205	2,108	1,828
Change in plan assets
Fair value, beginning balance	1,209	1,149
Acquisitions	0	0
Actual return on plan assets	149	94
Company contributions	67	65	62
Participant contributions	52	56
Foreign exchange rate changes	0	0
Benefit payments	(156)	(155)
Settlements, curtailments, special termination benefits and other	0	0
Fair value, ending balance	1,321	1,209	1,149
Funded status at end of year	(884)	(899)
Amounts recognized in the Consolidated Balance Sheet
Non-current assets	0	0
Accrued benefit cost
Current liabilities	(4)	(4)
Non-current liabilities	(880)	(895)
Ending balance	(884)	(899)
Amounts recognized in accumulated other comprehensive income
Net transition obligation (asset)	0	0
Net actuarial loss (gain)	1,028	1,171
Prior service cost (credit)	(197)	(269)
Ending balance	$ 831	$ 902

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Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 29,904	$ 29,611	$ 26,662
Operating expenses
Cost of sales	15,685	15,693	13,831
Selling, general and administrative expenses	6,102	6,170	5,479
Research, development and related expenses	1,634	1,570	1,434
Total operating expenses	23,421	23,433	20,744
Operating income	6,483	6,178	5,918
Interest expense and income
Interest expense	171	186	201
Interest income	(39)	(39)	(38)
Total interest expense - net	132	147	163
Income before income taxes	6,351	6,031	5,755
Tax effect	1,840	1,674	1,592
Net income including noncontrolling interest	4,511	4,357	4,163
Less: Net income attributable to noncontrolling interest	67	74	78
Net income attributable to 3M	$ 4,444	$ 4,283	$ 4,085
Weighted average 3M common shares outstanding - basic (in shares)	693.9	708.5	713.7
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$ 6.40	$ 6.05	$ 5.72
Weighted average 3M common shares outstanding - diluted (in shares)	703.3	719.0	725.5
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$ 6.32	$ 5.96	$ 5.63
Cash dividends paid per 3M common share (in dollars per share)	$ 2.36	$ 2.20	$ 2.10

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Significant Accounting Policies (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Foreign Currency Translation
Threshold percentage used to determine if economic environment is highly inflationary									100.00%
Number of years used to determine if economic environment is highly inflationary									3 years
Operating income of Venezuelan subsidiary as percent of consolidated amount high end of range									1.00%
Cumulative inflation rate of Venezuela in November 2009 and since, low end of range									100.00%
Approximate net sales decrease of Venezuelan sub due to change in functional currency and remeasurment from January 1, 2010 in comparison to 2009											66.70%
Cash and cash equivalents
Cash and cash equivalents classification when acquired, maximum maturity period									3 months
Marketable securities.
Marketable securities classification, minimum holding period for classification as non-current									1 year
Earnings per share
Options outstanding not included in computation of diluted earnings per share (in shares)									12.6	17.4	26.3
Numerator:
Net income attributable to 3M	$ 991	$ 1,161	$ 1,167	$ 1,125	$ 954	$ 1,088	$ 1,160	$ 1,081	$ 4,444	$ 4,283	$ 4,085
Denominator:
Denominator for weighted average 3M common shares outstanding - basic (in shares)									693.9	708.5	713.7
Dilution associated with the Company's stock-based compensation plans (in shares)									9.4	10.5	11.8
Denominator for weighted average 3M common shares outstanding - diluted (in shares)									703.3	719.0	725.5
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$ 1.43	$ 1.68	$ 1.68	$ 1.61	$ 1.36	$ 1.54	$ 1.63	$ 1.52	$ 6.40	$ 6.05	$ 5.72
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$ 1.41	$ 1.65	$ 1.66	$ 1.59	$ 1.35	$ 1.52	$ 1.60	$ 1.49	$ 6.32	$ 5.96	$ 5.63

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Stock-Based Compensation (Details 3) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Stock Option Program	Dec. 31, 2011 Stock Option Program	Dec. 31, 2010 Stock Option Program	Dec. 31, 2012 Stock Option Program Annual	Dec. 31, 2011 Stock Option Program Annual	Dec. 31, 2010 Stock Option Program Annual	Dec. 31, 2012 Stock Option Program Progressive (Reload)	Dec. 31, 2011 Stock Option Program Progressive (Reload)	Dec. 31, 2010 Stock Option Program Progressive (Reload)	Dec. 31, 2012 General Employees' Stock Purchase Plan (GESPP)	Dec. 31, 2011 General Employees' Stock Purchase Plan (GESPP)	Dec. 31, 2010 General Employees' Stock Purchase Plan (GESPP)	May 31, 2012 General Employees' Stock Purchase Plan (GESPP)	Dec. 31, 2012 3M Long Term Incentive Plan	May 31, 2012 3M Long Term Incentive Plan	May 31, 2010 3M Long Term Incentive Plan
Stock Option Program
Balance at the beginning of the period				64,148,415	70,335,044	74,268,165
Granted - Annual				5,770,190	5,514,500	5,788,313							1,455,545	1,433,609	1,325,579
Granted - Progressive (Reload)				110,065	237,839	188,105
Granted - Other				51,661	8,953	27,911
Exercised				(13,123,617)	(11,625,863)	(9,678,654)							(1,455,545)	(1,433,609)	(1,325,579)
Canceled				(391,684)	(322,058)	(258,796)
Balance at the end of the period				56,565,030	64,148,415	70,335,044
Weighted average exercise price - Beginning balance				$ 77.28	$ 74.80	$ 72.39
Weighted average exercise price - Granted - Annual				$ 87.91	$ 89.46	$ 78.79							$ 75.32	$ 73.67	$ 70.57
Weighted average exercise price - Granted - Progressive (Reload)				$ 89.65	$ 94.02	$ 88.67
Weighted average exercise price - Granted - Other				$ 89.25	$ 86.71	$ 82.13
Weighted average exercise price - Exercised				$ 68.78	$ 68.47	$ 59.11							$ 75.32	$ 73.67	$ 70.57
Weighted average exercise price - Canceled				$ 83.65	$ 75.09	$ 70.76
Weighted average exercise price - Ending balance				$ 80.33	$ 77.28	$ 74.80
Options exercisable				45,207,143	52,644,364	58,201,617
Options exercisable, exercise price				$ 78.78	$ 76.90	$ 75.87
Weighted Average Remaining Contractual Life for options outstanding				55 months
Aggregate Intrinsic Value for options outstanding				$ 709
Weighted Average Remaining Contractual Life for options exercisable				44 months
Aggregate Intrinsic Value for options exercisable				637
Compensation expense yet to be recognized				54
Weighted average life of remaining vesting period				21 months
Total intrinsic value of stock options exercised				282	287	263
Cash received from options exercised				903	796	571
Tax benefit realized from exercise of stock options				98	96	93
Share- based compensation assumptions
Weighted average exercise price							$ 87.89	$ 89.47	$ 78.72	$ 87.89	$ 93.94	$ 86.72
Risk-free interest rate (as a percent)							1.10%	2.80%	2.80%	0.20%	0.40%	0.60%
Dividend yield (as a percent)							2.60%	2.60%	2.50%	2.60%	2.60%	2.50%
Expected volatility (as a percent)							24.50%	22.00%	25.70%	23.40%	21.50%	33.20%
Expected life							74 months	72 months	72 months	19 months	15 months	17 months
Black-Scholes fair value							$ 14.94	$ 16.10	$ 16.50	$ 8.50	$ 7.49	$ 12.01	$ 13.29	$ 13.00	$ 12.45
Option price, percentage of market value at date of grant													85.00%
Option price, discount from market value at date of grant													15.00%
Number of shares authorized													60,000,000					100,000,000	64,000,000
Number of additional shares authorized																30,000,000		36,000,000
Number of shares available for grant under the 2008 Long Term Incentive Plan Program													31,445,207	2,900,751	4,334,360		48,786,751
Stock-based compensation programs expense	$ 223	$ 253	$ 274										$ 19	$ 19	$ 17
Awards other than options and Stock Appreciation Rights, number of shares counted for every one share awarded under plan limit with grant dates prior to May 11, 2010																	3.38
Awards other than options and Stock Appreciation Rights, number of shares counted for every one share awarded under plan limit with grant dates on or after May 11, 2010 and prior to May 8, 2012																	2.87
Awards other than options and Stock Appreciation Rights, number of shares counted for every one share awarded under plan limit with grant dates of May 8, 2012, or later																	3.50

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Consolidated Statement of Changes in Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock and Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Balance at the beginning of the period at Dec. 31, 2009	$ 13,302	$ 3,162	$ 23,753	$ (10,397)	$ (3,754)	$ 538
Increase (decrease) in equity
Net income	4,163		4,085			78
Other comprehensive income (loss), net of tax
Cumulative translation adjustment	244				205	39
Defined benefit pension and postretirement plans adjustment	(42)				(40)	(2)
Debt and equity securities - unrealized gain (loss)	3				3	0
Cash flow hedging instruments - unrealized gain (loss)	4				4	0
Total other comprehensive income (loss), net of tax	209
Dividends paid ($2.10, $2.20 and $2.36 per share in 2010, 2011 and 2012)	(1,500)		(1,500)
Stock-based compensation, net of tax impacts	311	311
Reacquired stock	(880)			(880)
Issuances pursuant to stock option and benefit plans	668		(343)	1,011
Purchase of subsidiary shares and transfers from noncontrolling interest	(256)	4			39	(299)
Balance at the end of the period at Dec. 31, 2010	16,017	3,477	25,995	(10,266)	(3,543)	354
Increase (decrease) in equity
Net income	4,357		4,283			74
Other comprehensive income (loss), net of tax
Cumulative translation adjustment	(250)				(260)	10
Defined benefit pension and postretirement plans adjustment	(1,280)				(1,276)	(4)
Debt and equity securities - unrealized gain (loss)	0				0	0
Cash flow hedging instruments - unrealized gain (loss)	54				54	0
Total other comprehensive income (loss), net of tax	(1,476)
Dividends paid ($2.10, $2.20 and $2.36 per share in 2010, 2011 and 2012)	(1,555)		(1,555)
Stock-based compensation, net of tax impacts	300	300
Reacquired stock	(2,694)			(2,694)
Issuances pursuant to stock option and benefit plans	906		(375)	1,281
Business combination allocation to noncontrolling interest	56					56
Purchase and sale of subsidiary shares - net	(49)	(1)				(48)
Balance at the end of the period at Dec. 31, 2011	15,862	3,776	28,348	(11,679)	(5,025)	442
Increase (decrease) in equity
Net income	4,511		4,444			67
Other comprehensive income (loss), net of tax
Cumulative translation adjustment	71				116	(45)
Defined benefit pension and postretirement plans adjustment	201				200	1
Debt and equity securities - unrealized gain (loss)	4				4	0
Cash flow hedging instruments - unrealized gain (loss)	(45)				(45)	0
Total other comprehensive income (loss), net of tax	231
Dividends paid ($2.10, $2.20 and $2.36 per share in 2010, 2011 and 2012)	(1,635)		(1,635)
Stock-based compensation, net of tax impacts	277	277
Reacquired stock	(2,220)			(2,220)
Issuances pursuant to stock option and benefit plans	1,014		(478)	1,492
Balance at the end of the period at Dec. 31, 2012	$ 18,040	$ 4,053	$ 30,679	$ (12,407)	$ (4,750)	$ 465

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Stock-Based Compensation (Details)	12 Months Ended
	Dec. 31, 2012 Participants
Stock-Based Compensation
Vesting period for awards prior to May 2005 grant	1 year
Vesting period for awards after May 2005 grant	3 years
Expiration of annual grants	10 years
Retirement age eligibility for employees	55 years
Retirement eligibility for employees, minimum years of service required	5 years
Percent of stock-based compensation related to retiree-eligible population	30.00%
Number of participants with outstanding options, restricted stock, or restricted stock units	11,564

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Supplemental Cash Flow Information (Details) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended			1 Months Ended
	Mar. 31, 2010 USD ($)	Mar. 31, 2010 JPY (¥)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Apr. 30, 2010 A-One USD ($)	Apr. 30, 2010 A-One JPY (¥)
Supplemental Cash Flow Information
Cash income tax payments, net of refunds			$ 1,717	$ 1,542	$ 1,509
Cash interest payments			166	219	178
Capitalized interest			23	19	17
Investing and financing activities with significant non-cash components
Cash paid to purchase shares held by Sumitomo Electric Industries, Ltd.	63	5,800
Note payable issued to Sumitomo Electric Industries	188	17,400
Five-year financed liability of 1.7 billion in Japanese Yen						$ 18	¥ 1,700

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Business Segments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Business Segment Information
Net sales	$ 7,387	$ 7,497	$ 7,534	$ 7,486	$ 7,089	$ 7,531	$ 7,680	$ 7,311	$ 29,904	$ 29,611	$ 26,662
Operating Income									6,483	6,178	5,918
Assets	33,876				31,616				33,876	31,616	30,156
Depreciation and Amortization									1,288	1,236	1,120
Capital Expenditures									1,484	1,379	1,091
Industrial
Business Segment Information
Net sales									9,943	9,629	8,116
Operating Income									2,236	1,983	1,720
Assets	8,587				7,553				8,587	7,553	6,486
Depreciation and Amortization									323	337	312
Capital Expenditures									415	383	304
Safety and Graphics
Business Segment Information
Net sales									5,471	5,458	4,873
Operating Income									1,217	1,237	1,138
Assets	5,111				4,975				5,111	4,975	4,979
Depreciation and Amortization									238	251	225
Capital Expenditures									190	204	157
Electronics and Energy
Business Segment Information
Net sales									5,458	5,732	5,632
Operating Income									1,026	1,140	1,207
Assets	5,512				5,296				5,512	5,296	5,196
Depreciation and Amortization									266	255	243
Capital Expenditures									350	274	293
Health Care
Business Segment Information
Net sales									5,138	5,011	4,492
Operating Income									1,641	1,484	1,357
Assets	4,296				4,190				4,296	4,190	4,181
Depreciation and Amortization									169	199	130
Capital Expenditures									113	159	78
Consumer
Business Segment Information
Net sales									4,386	4,230	3,926
Operating Income									943	855	859
Assets	2,445				2,423				2,445	2,423	2,169
Depreciation and Amortization									110	102	101
Capital Expenditures									105	98	70
Corporate and Unallocated
Business Segment Information
Net sales									4	9	11
Operating Income									(471)	(420)	(278)
Assets	7,925				7,179				7,925	7,179	7,145
Depreciation and Amortization									182	92	109
Capital Expenditures									311	261	189
Elimination of Dual Credit
Business Segment Information
Net sales									(496)	(458)	(388)
Operating Income									$ (109)	$ (101)	$ (85)

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Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2012

Marketable Securities

Schedule of Marketable Securities

		December 31,		December 31,
(Millions)		2012		2011
U.S. government agency securities		$	162	$	119
Foreign government agency securities			16		8
Corporate debt securities			471		413
Commercial paper			116		30
Certificates of deposit/time deposits			41		49
U.S. treasury securities			54		―
U.S. municipal securities			13		9
Asset-backed securities:
	Automobile loan related		567		530
	Credit card related		123		244
	Equipment lease related		54		54
	Other		31		5
Asset-backed securities total			775		833
Current marketable securities		$	1,648	$	1,461
U.S. government agency securities		$	125	$	361
Foreign government agency securities			51		15
Corporate debt securities			494		255
U.S. treasury securities			18		34
U.S. municipal securities			14		5
Auction rate securities			7		4
Asset-backed securities:
	Automobile loan related		375		188
	Credit card related		34		24
	Equipment lease related		36		10
	Other		8		―
Asset-backed securities total			453		222
Non-current marketable securities		$	1,162	$	896
Total marketable securities		$	2,810	$	2,357

Marketable securities by contractual maturity

(Millions)	December 31, 2012
Due in one year or less	$	912
Due after one year through three years		1,483
Due after three years through five years		414
Due after five years		1
Total marketable securities	$	2,810

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Income Taxes (Details 6) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes
Income tax benefits attributable to reduced tax rates or exemptions in foreign locations	$ 64,000,000	$ 77,000,000	$ 69,000,000
EPS impact of reduced tax rates or exemptions in foreign locations (in dollars per diluted share)	$ 0.09	$ 0.11	$ 0.10
Undistributed earnings of non-U.S. subsidiaries	$ 8,600,000,000

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies

Commitments and Contingencies

NOTE 13. Commitments and Contingencies

Capital and Operating Leases:

Rental expense under operating leases was $300 million in 2012, $279 million in 2011 and $262 million in 2010. It is 3M's practice to secure renewal rights for leases, thereby giving 3M the right, but not the obligation, to maintain a presence in a leased facility. 3M has two primary capital leases. First, 3M has a capital lease, which became effective in April 2003, that involves a building in the United Kingdom (with a lease term of 22 years). During the second quarter of 2003, 3M recorded a capital lease asset and obligation of approximately 33.5 million British Pound (GBP), or approximately $54 million at December 31, 2012 exchange rates. Second, during the fourth quarter of 2009, 3M recorded a capital lease asset and obligation of approximately $50 million related to an IT investment with an amortization period of seven years.

Minimum lease payments under capital and operating leases with non-cancelable terms in excess of one year as of December 31, 2012, were as follows:

		Capital Leases		Operating Leases
(Millions)
2013		$	22	$	194
2014			21		158
2015			8		119
2016			7		77
2017			4		68
After 2017			34		119
	Total	$	96	$	735
Less: Amounts representing interest			6
Present value of future minimum lease payments			90
Less: Current obligations under capital leases			19
Long-term obligations under capital leases		$	71

Warranties/Guarantees:

3M's accrued product warranty liabilities, recorded on the Consolidated Balance Sheet as part of current and long-term liabilities, are estimated at approximately $28 million at both December 31, 2012 and December 31, 2011. 3M does not consider this amount to be material. The fair value of 3M guarantees of loans with third parties and other guarantee arrangements are not material.

Related Party Activity:

3M does not have any material related party activity that is not in the ordinary course of business.

Legal Proceedings:

The Company and some of its subsidiaries are involved in numerous claims and lawsuits, principally in the United States, and regulatory proceedings worldwide. These include various products liability (involving products that the Company now or formerly manufactured and sold), intellectual property, and commercial claims and lawsuits, including those brought under the antitrust laws, and environmental proceedings. Unless otherwise stated, the Company is vigorously defending all such litigation.

Process for Disclosure and Recording of Liabilities and Insurance Receivables Related to Legal Proceedings

Many lawsuits and claims involve highly complex issues relating to causation, scientific evidence, and whether there are actual damages and are otherwise subject to substantial uncertainties. Assessments of lawsuits and claims can involve a series of complex judgments about future events and can rely heavily on estimates and assumptions. The Company complies with the requirements of ASC Topic 450, Contingencies, and related guidance, and records liabilities for legal proceedings in those instances where it can reasonably estimate the amount of the loss and where liability is probable. Where the reasonable estimate of the probable loss is a range, the Company records the most likely estimate of the loss, or the low end of the range if there is no one best estimate. The Company either discloses the amount of a possible loss or range of loss in excess of established accruals if estimable, or states that such an estimate cannot be made. The Company discloses significant legal proceedings even where liability is not probable or the amount of the liability is not estimable, or both, if the Company believes there is at least a reasonable possibility that a loss may be incurred.

The Company estimates insurance receivables based on an analysis of its numerous policies, including their exclusions, pertinent case law interpreting comparable policies, its experience with similar claims, and assessment of the nature of the claim and remaining coverage, and records an amount it has concluded is likely to be recovered. For those insured matters where the Company has taken an accrual, the Company also records receivables for the amount of insurance that it expects to recover under the Company's insurance program. For those insured matters where the Company has not taken an accrual because the liability is not probable or the amount of the liability is not estimable, or both, but where the Company has incurred an expense in defending itself, the Company records receivables for the amount of insurance that it expects to recover for the expense incurred.

Because litigation is subject to inherent uncertainties, and unfavorable rulings or developments could occur, there can be no certainty that the Company may not ultimately incur charges in excess of presently recorded liabilities. A future adverse ruling, settlement, or unfavorable development could result in future charges that could have a material adverse effect on the Company's results of operations or cash flows in the period in which they are recorded. The Company currently believes that such future charges, if any, would not have a material adverse effect on the consolidated financial position of the Company. Based on experience and developments, the Company reexamines its estimates of probable liabilities and associated expenses and receivables each period, and whether it is able to estimate a liability previously determined to be not estimable and/or not probable. Where appropriate, the Company makes additions to or adjustments of its estimated liabilities. As a result, the current estimates of the potential impact on the Company's consolidated financial position, results of operations and cash flows for the legal proceedings and claims pending against the Company could change in the future.

The following table shows the major categories of significant legal matters – respirator mask/asbestos litigation (including Aearo – described below), environmental remediation and other environmental liabilities -- for which the Company has been able to estimate its probable liability and for which the Company has taken accruals and the related insurance receivables:

Liability and Receivable Balances
At December 31
(Millions)	2012		2011		2010
Respirator mask/asbestos liabilities	$	154	$	130	$	126
Respirator mask/asbestos insurance receivables		87		121		122
Environmental remediation liabilities	$	29	$	28	$	24
Environmental remediation insurance receivables		11		15		15
Other environmental liabilities	$	57	$	75	$	90
Other environmental insurance receivables		15		―		―

Respirator Mask/Asbestos Litigation

As of December 31, 2012, the Company is a named defendant, with multiple co-defendants, in numerous lawsuits in various courts that purport to represent approximately 2,060 individual claimants compared to approximately 2,260 individual claimants with actions pending at December 31, 2011.

The vast majority of the lawsuits and claims resolved by and currently pending against the Company allege use of some of the Company's mask and respirator products and seek damages from the Company and other defendants for alleged personal injury from workplace exposures to asbestos, silica, coal mine dust or other occupational dusts found in products manufactured by other defendants or generally in the workplace. A minority of the lawsuits and claims resolved by and currently pending against the Company generally allege personal injury from occupational exposure to asbestos from products previously manufactured by the Company, which are often unspecified, as well as products manufactured by other defendants, or occasionally at Company premises.

The Company's current volume of new and pending matters is substantially lower than its historical experience. The Company expects that filing of claims by unimpaired claimants in the future will continue to be at much lower levels than in the past. Accordingly, the number of claims alleging more serious injuries, including mesothelioma and other malignancies, will represent a greater percentage of total claims than in the past. The Company has prevailed in all nine cases taken to trial, including seven of the eight cases tried to verdict (such trials occurred in 1999, 2000, 2001, 2003, 2004, and 2007), and an appellate reversal in 2005 of the 2001 jury verdict adverse to the Company. The ninth case, tried in 2009, was dismissed by the Court at the close of plaintiff's evidence, based on the Court's legal finding that the plaintiff had not presented sufficient evidence to support a jury verdict. The plaintiffs appealed but in February 2012 the California Court of Appeals granted the plaintiff's voluntary dismissal of the appeal.

The Company has demonstrated in these past trial proceedings that its respiratory protection products are effective as claimed when used in the intended manner and in the intended circumstances. Consequently the Company believes that claimants are unable to establish that their medical conditions, even if significant, are attributable to the Company's respiratory protection products. Nonetheless the Company's litigation experience indicates that claims of persons with malignant conditions are costlier to resolve than the claims of unimpaired persons, and it therefore believes the average cost of resolving pending and future claims on a per-claim basis will continue to be higher than it experienced in prior periods when the vast majority of claims were asserted by the unimpaired.

As previously reported, the State of West Virginia, through its Attorney General, filed a complaint in 2003 against the Company and two other manufacturers of respiratory protection products in the Circuit Court of Lincoln County, West Virginia and amended its complaint in 2005. The amended complaint seeks substantial, but unspecified, compensatory damages primarily for reimbursement of the costs allegedly incurred by the State for worker's compensation and healthcare benefits provided to all workers with occupational pneumoconiosis and unspecified punitive damages. While the case has been inactive since the fourth quarter of 2007, the Court held a case management conference in March 2011, but no further activity has occurred in the case since that conference. No liability has been recorded for this matter because the Company believes that liability is not probable and estimable at this time. In addition, the Company is not able to estimate a possible loss or range of loss given the minimal activity in this case and the fact that the complaint asserts claims against two other manufacturers where a defendant's share of liability may turn on the law of joint and several liability and by the amount of fault a jury allocates to each defendant if a case is ultimately tried.

Plaintiffs have asserted specific dollar claims for damages in approximately 40% of the 1,149 lawsuits that were pending against the Company at the end of 2012 in all jurisdictions. A majority of states restrict or prohibit specifying damages in tort cases such as these, and most of the remaining jurisdictions do not require such specification. In those cases in which plaintiffs choose to assert specific dollar amounts in their complaints, brought in states that permit such pleading, the amounts claimed are typically not meaningful as an indicator of the Company's potential liability. This is because (a) the amounts claimed typically bear no relation to the extent of the plaintiff's injury, if any; (b) the complaints nearly always assert claims against multiple defendants with the typical complaint asserting claims against as few as a dozen different defendants to upwards of 100 different defendants, the damages alleged are not attributed to individual defendants, and a defendant's share of liability may turn on the law of joint and several liability, which can vary by state, and by the amount of fault a jury allocates to each defendant if a case is ultimately tried before a jury; (c) many cases are filed against the Company even though the plaintiffs did not use any of the Company's products and, ultimately, are withdrawn or dismissed without any payment; and (d) many cases are brought on behalf of plaintiffs who have not suffered any medical injury, and, ultimately, are resolved without any payment or a payment that is a small fraction of the damages initially claimed. Of the 465 pending cases in which purported damage amounts are specified in the complaints, 281 cases involve claims of $100,000 or less (18 of which also allege punitive damages of $15,000, 13 of which also allege punitive damages of $10 million, and 3 of which also allege punitive damages of $20 million); 59 cases involve claims between $100,000 and $3 million (45 of which also allege punitive damages of $250,000, and 8 of which also allege punitive damages of $1 million); 7 cases involve claims between $3 million and $7.5 million (all of which also allege punitive damages of $5 million); 5 cases involve claims of $10 million (4 of which also allege punitive damages of $10 million); 72 cases involve claims of $10 million to $50 million (all of which also allege punitive damages of $13 million); 4 cases involve claims of $50 million (all of which also allege punitive damages of $50 million) and 37 cases involve claims of over $50 million (36 of which allege punitive damages of $100 million). Some complaints allege that the compensatory and punitive damages are at least the amounts specified. As previously stated, the Company's experience and the other reasons cited indicate that the damage amounts specified in complaints are not a meaningful factor in any assessment of the Company's potential liability.

Respirator Mask/Asbestos Liabilities and Insurance Receivables: The Company estimates its respirator mask/asbestos liabilities, including the cost to resolve the claims and defense costs, by examining: (i) the Company's experience in resolving claims, (ii) apparent trends, (iii) the apparent quality of claims (e.g., whether the claim has been asserted on behalf of asymptomatic claimants), (iv) changes in the nature and mix of claims (e.g., the proportion of claims asserting usage of the Company's mask or respirator products and alleging exposure to each of asbestos, silica, coal or other occupational dusts, and claims pleading use of asbestos-containing products allegedly manufactured by the Company), (v) the number of current claims and a projection of the number of future asbestos and other claims that may be filed against the Company, (vi) the cost to resolve recently settled claims, and (vii) an estimate of the cost to resolve and defend against current and future claims.

Developments may occur that could affect the Company's estimate of its liabilities. These developments include, but are not limited to, significant changes in (i) the number of future claims, (ii) the average cost of resolving claims, (iii) the legal costs of defending these claims and in maintaining trial readiness, (iv) changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) changes in the law and procedure applicable to these claims, and (vii) the financial viability of other co-defendants and insurers.

As a result of the greater cost of resolving claims of persons with more serious injuries, including mesothelioma and other malignancies, the Company increased its accruals in 2012 for respirator mask/asbestos liabilities by $71 million. During 2012, the Company made payments for fees and settlements of $45 million related to the respirator mask/asbestos litigation. As of December 31, 2012, the Company had accruals for respirator mask/asbestos liabilities of $126 million (excluding Aearo accruals). The Company cannot estimate the amount or range of amounts by which the liability may exceed the accrual the Company has established because of the (i) inherent difficulty in projecting the number of claims that have not yet been asserted, particularly with respect to the Company's respiratory products that themselves did not contain any harmful materials, (ii) the complaints nearly always assert claims against multiple defendants where the damages alleged are typically not attributed to individual defendants so that a defendant's share of liability may turn on the law of joint and several liability, which can vary by state, (iii) the multiple factors described above that the Company considers in estimating its liabilities, and (iv) the several possible developments described above that may occur that could affect the Company's estimate of liabilities.

As of December 31, 2012, the Company's receivable for insurance recoveries related to the respirator mask/asbestos litigation was $87 million. In 2012, the Company increased its receivables for expected insurance recoveries by $39 million related to this litigation. The Company estimates insurance receivables based on an analysis of its numerous policies, including their exclusions, pertinent case law interpreting comparable policies, its experience with similar claims, and assessment of the nature of the claim and remaining coverage, and records an amount it has concluded is likely to be recovered.

Various factors could affect the timing and amount of recovery of this receivable, including (i) delays in or avoidance of payment by insurers; (ii) the extent to which insurers may become insolvent in the future, and (iii) the outcome of negotiations with insurers and legal proceedings with respect to respirator mask/asbestos liability insurance coverage. The difference between the accrued liability and insurance receivable represents in part the time delay between payment of claims on the one hand and receipt of insurance reimbursements on the other hand. Because of the lag time between settlement and payment of a claim, no meaningful conclusions may be drawn from quarterly or annual changes in the amount of receivables for expected insurance recoveries or changes in the number of claimants.

As previously reported, on January 5, 2007 the Company was served with a declaratory judgment action filed on behalf of two of its insurers (Continental Casualty and Continental Insurance Co. – both part of the Continental Casualty Group) disclaiming coverage for respirator mask/asbestos claims. The action, pending in the District Court in Ramsey County, Minnesota, seeks declaratory judgment regarding coverage provided by the policies and the allocation of covered costs among the policies issued by the various insurers. The action named, in addition to the Company, over 60 of the Company's insurers. This action is similar in nature to an action filed in 1994 with respect to breast implant coverage, which ultimately resulted in the Minnesota Supreme Court's ruling of 2003 that was largely in the Company's favor. The plaintiff insurers have served an amended complaint that names some additional insurers and deletes others. A significant number of the insurer defendants named in the amended complaint have been dismissed because of settlements they have reached with 3M regarding the matters at issue in the lawsuit. The case is currently in the discovery phase. Trial is scheduled to begin in the summer of 2013. During 2012, the Company reached settlements with several insurers, including Continental Casualty and Continental Insurance Co. mentioned above, that will result in payments totaling approximately $87 million ($72 million of which has been received in 2012) to the Company over the next year.

Respirator Mask/Asbestos Litigation – Aearo Technologies

On April 1, 2008, a subsidiary of the Company purchased the stock of Aearo Holding Corp., the parent of Aearo Technologies (“Aearo”). Aearo manufactured and sold various products, including personal protection equipment, such as eye, ear, head, face, fall and certain respiratory protection products.

As of December 31, 2012, Aearo and/or other companies that previously owned and operated Aearo's respirator business (American Optical Corporation, Warner-Lambert LLC, AO Corp. and Cabot Corporation (“Cabot”)) are named defendants, with multiple co-defendants, including the Company, in numerous lawsuits in various courts in which plaintiffs allege use of mask and respirator products and seek damages from Aearo and other defendants for alleged personal injury from workplace exposures to asbestos, silica-related, or other occupational dusts found in products manufactured by other defendants or generally in the workplace.

As of December 31, 2012, the Company, through its Aearo subsidiary, has recorded $28 million as the best estimate of the probable liabilities for product liabilities and defense costs related to current and future Aearo-related asbestos and silica-related claims. Responsibility for legal costs, as well as for settlements and judgments, is currently shared in an informal arrangement among Aearo, Cabot, American Optical Corporation and a subsidiary of Warner Lambert and their insurers (the “Payor Group”). Liability is allocated among the parties based on the number of years each company sold respiratory products under the “AO Safety” brand and/or owned the AO Safety Division of American Optical Corporation and the alleged years of exposure of the individual plaintiff. Aearo's share of the contingent liability is further limited by an agreement entered into between Aearo and Cabot on July 11, 1995. This agreement provides that, so long as Aearo pays to Cabot an annual fee of $400,000, Cabot will retain responsibility and liability for, and indemnify Aearo against, asbestos and silica-related product liability claims for respirators manufactured prior to July 11, 1995. Because the date of manufacture for a particular respirator allegedly used in the past is often difficult to determine, Aearo and Cabot have applied the agreement to claims arising out of the alleged use of respirators while exposed to asbestos or silica or products containing asbestos or silica prior to January 1, 1997. With these arrangements in place, Aearo's potential liability is limited to exposures alleged to have arisen from the use of respirators involving exposure to asbestos, silica, or silica products on or after January 1, 1997. To date, Aearo has elected to pay the annual fee. Aearo could potentially be exposed to additional claims for some part of the pre-July 11, 1995 period covered by its agreement with Cabot if Aearo elects to discontinue its participation in this arrangement, or if Cabot is no longer able to meet its obligations in these matters.

In March 2012, Cabot CSC Corporation and Cabot Corporation filed a lawsuit against Aearo in the Superior Court of Suffolk County, Massachusetts seeking declaratory relief as to the scope of Cabot's indemnity obligations under the July 11, 1995 agreement, including whether Cabot has retained liability for coal workers' pneumoconiosis claims, and seeking damages for breach of contract.

Developments may occur that could affect the estimate of Aearo's liabilities. These developments include, but are not limited to: (i) significant changes in the number of future claims, (ii) significant changes in the average cost of resolving claims, (iii) significant changes in the legal costs of defending these claims, (iv) significant changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) significant changes in the law and procedure applicable to these claims, (vii) significant changes in the liability allocation among the co-defendants, (viii) the financial viability of members of the Payor Group including exhaustion of available coverage limits, (ix) the outcome of pending insurance coverage litigation among certain other members of the Payor Group and their respective insurers, and/or (x) a determination that the interpretation of the contractual obligations on which Aearo has estimated its share of liability is inaccurate. The Company cannot determine the impact of these potential developments on its current estimate of Aearo's share of liability for these existing and future claims. If any of the developments described above were to occur, the actual amount of these liabilities for existing and future claims could be significantly larger than the amount accrued.

Because of the inherent difficulty in projecting the number of claims that have not yet been asserted, the complexity of allocating responsibility for future claims among the Payor Group, and the several possible developments that may occur that could affect the estimate of Aearo's liabilities, the Company cannot estimate the amount or range of amounts by which Aearo's liability may exceed the accrual the Company has established.

Environmental Matters and Litigation

The Company's operations are subject to environmental laws and regulations including those pertaining to air emissions, wastewater discharges, toxic substances, and the handling and disposal of solid and hazardous wastes enforceable by national, state, and local authorities around the world, and private parties in the United States and abroad. These laws and regulations provide, under certain circumstances, a basis for the remediation of contamination, for restoration of or compensation for damages to natural resources, and for personal injury and property damage claims. The Company has incurred, and will continue to incur, costs and capital expenditures in complying with these laws and regulations, defending personal injury and property damage claims, and modifying its business operations in light of its environmental responsibilities. In its effort to satisfy its environmental responsibilities and comply with environmental laws and regulations, the Company has established, and periodically updates, policies relating to environmental standards of performance for its operations worldwide.

Under certain environmental laws, including the United States Comprehensive Environmental Response, Compensation and Liability Act of 1980 and similar state laws, the Company may be jointly and severally liable, typically with other companies, for the costs of remediation of environmental contamination at current or former facilities and at off-site locations. The Company has identified numerous locations, most of which are in the United States, at which it may have some liability. Please refer to the paragraph entitled “Environmental Liabilities and Insurance Receivables” that followsfor information on the amount of the accrual.

Environmental Matters

As previously reported, the Company has been voluntarily cooperating with ongoing reviews by local, state, national (primarily the U.S. Environmental Protection Agency (EPA)), and international agencies of possible environmental and health effects of various perfluorinated compounds (“PFCs”), including perfluorooctanyl compounds such as perfluorooctanoate (“PFOA”) and perfluorooctanesulfonate (“PFOS”). As a result of its phase-out decision in May 2000, the Company no longer manufactures perfluorooctanyl compounds. The company ceased manufacturing and using the vast majority of these compounds within approximately two years of the phase-out announcement, and ceased all manufacturing and the last significant use of this chemistry by 2008. Through its ongoing life cycle management and its raw material composition identification processes associated with the Company's policies covering the use of all persistent and bio-accumulative materials, the Company has on occasion identified the presence of precursor chemicals in materials purchased from suppliers that may ultimately degrade to PFOA, PFOS or similar compounds. Upon such identification, the Company works to find alternatives for such chemicals.

Regulatory activities concerning PFOA and/or PFOS continue in the United States, Europe and elsewhere, and before certain international bodies. These activities include gathering of exposure and use information, risk assessment, and consideration of regulatory approaches. The EPA continues to develop Drinking Water Health Advisories for PFOS and PFOA, which are expected to be released in 2013. Those advisory levels will supersede the current provisional advisory levels. In an effort to move toward developing standards under the Safe Drinking Water Act, the EPA published on May 2, 2012 a list of unregulated substances, including six PFCs, required to be monitored during the period 2013-2015 by public water system suppliers to determine the extent of their occurrence.

The Agency for Toxic Substances and Disease Registry (ATSDR) has completed a bio-monitoring study evaluating PFC blood levels in volunteers living near fields where wastewater treatment sludge was applied from the municipal wastewater treatment plant in Decatur, Alabama that received wastewater from numerous sources, including sanitary wastewater from 3M. The Company expects ATSDR to release its report in 2013.

3M continues its third and final phase of work pursuant to a Memorandum of Understanding with the EPA regarding an environmental assessment program at the Company's Decatur manufacturing site. That work includes groundwater sampling off-site from the 3M Decatur facility as well as at three local landfills used by the facility. The Company shared results from this final phase of sampling work with the EPA in September, 2012.

The Company is continuing to make progress in its work, under the supervision of state regulators, to address its historic disposal of PFC-containing waste associated with manufacturing operations at the Cottage Grove, Minnesota and Decatur, Alabama plants.

As previously reported, the Company entered into a voluntary remedial action agreement with the Alabama Department of Environmental Management (ADEM) to address the presence of PFCs in the soil at the Company's manufacturing facility in Decatur, Alabama. For approximately twenty years, the Company incorporated its wastewater treatment plant sludge containing PFCs in fields at its Decatur facility pursuant to a permit issued by ADEM. After a review of the available options to address the presence of PFCs in the soil, ADEM agreed that the preferred remediation option is to use a multilayer cap over the former sludge incorporation areas on the manufacturing site with subsequent groundwater migration controls and treatment. Implementation of that option will continue throughout the balance of 2013 and is expected to be completed in 2016.

The Company continues to work with the Minnesota Pollution Control Agency (MPCA) pursuant to the terms of the previously disclosed May 2007 Settlement Agreement and Consent Order to address the presence of certain PFCs in the soil and groundwater at former disposal sites in Washington County, Minnesota (Oakdale and Woodbury) and at the Company's manufacturing facility at Cottage Grove, Minnesota. Under this agreement, the Company's principal obligations include (i) evaluating releases of certain PFCs from these sites and proposing response actions; (ii) providing treatment or alternative drinking water upon identifying any level exceeding a Health Based Value (“HBV”) or Health Risk Limit (“HRL”) (i.e., the amount of a chemical in drinking water determined by the Minnesota Department of Health (MDH) to be safe for human consumption over a lifetime) for certain PFCs for which a HBV and/or HRL exists as a result of contamination from these sites; (iii) remediating identified sources of other PFCs at these sites that are not controlled by actions to remediate PFOA and PFOS; and (iv) sharing information with the MPCA about certain perfluorinated compounds. During 2008, the MPCA issued formal decisions adopting remedial options for the former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). In August 2009, the MPCA issued a formal decision adopting remedial options for the Company's Cottage Grove manufacturing facility. During the spring and summer of 2010, 3M began implementing the agreed upon remedial options at the Cottage Grove and Woodbury sites. 3M commenced the remedial option at the Oakdale site in late 2010. At each location the remedial options were recommended by the Company and approved by the MPCA. Remediation work has been completed at the Oakdale site, and it is in an operational maintenance mode. Remediation will continue at the other two sites during 2013.

The Company cannot predict what additional regulatory actions arising from the foregoing proceedings and activities, if any, may be taken regarding such compounds or the consequences of any such actions.

Environmental Litigation

As previously reported, a former employee filed a purported class action lawsuit in 2002 in the Circuit Court of Morgan County, Alabama seeking unstated damages and alleging that the plaintiffs suffered fear, increased risk, subclinical injuries, and property damage from exposure to certain perfluorochemicals at or near the Company's Decatur, Alabama, manufacturing facility. The Circuit Court in 2005 granted the Company's motion to dismiss the named plaintiff's personal injury-related claims on the basis that such claims are barred by the exclusivity provisions of the state's Workers Compensation Act. The plaintiffs' counsel filed an amended complaint in November 2006, limiting the case to property damage claims on behalf of a purported class of residents and property owners in the vicinity of the Decatur plant. Also, in 2005, the judge in a second purported class action lawsuit (filed by three residents of Morgan County, Alabama, seeking unstated compensatory and punitive damages involving alleged damage to their property from emissions of certain perfluorochemical compounds from the Company's Decatur, Alabama, manufacturing facility that formerly manufactured those compounds) granted the Company's motion to abate the case, effectively putting the case on hold pending the resolution of class certification issues in the first action described above filed in the same court in 2002. Despite the stay, plaintiffs filed an amended complaint seeking damages for alleged personal injuries and property damage on behalf of the named plaintiffs and the members of a purported class. No further action in the case is expected unless and until the stay is lifted.

In February 2009, a resident of Franklin County, Alabama, filed a purported class action lawsuit in the Circuit Court of Franklin County seeking compensatory damages and injunctive relief based on the application by the Decatur utility's wastewater treatment plant of wastewater treatment sludge to farmland and grasslands in the state that allegedly contain PFOA, PFOS and other perfluorochemicals. The named defendants in the case include 3M, its subsidiary Dyneon LLC, Daikin America, Inc., Synagro-WWT, Inc., Synagro South, LLC and Biological Processors of America. The named plaintiff seeks to represent a class of all persons within the State of Alabama who have had PFOA, PFOS and other perfluorochemicals released or deposited on their property. In March 2010, the Alabama Supreme Court ordered the case transferred from Franklin County to Morgan County. In May, 2010, consistent with its handling of the other matters, the Morgan County Circuit Court abated this case, putting it on hold pending the resolution of the class certification issues in the first case filed there.

In December 2010, the State of Minnesota, by its Attorney General Lori Swanson, acting in its capacity as trustee of the natural resources of the State of Minnesota, filed a lawsuit in Hennepin County District Court against 3M to recover damages (including unspecified assessment costs and reasonable attorney's fees) for alleged injury to, destruction of, and loss of use of certain of the State's natural resources under the Minnesota Environmental Response and Liability Act (MERLA) and the Minnesota Water Pollution Control Act (MWPCA), as well as statutory nuisance and common law claims of trespass, nuisance, and negligence with respect to the presence of PFCs in the groundwater, surface water, fish or other aquatic life and sediments. The State also seeks declarations under MERLA that 3M is responsible for all damages the State may suffer in the future for injuries to natural resources from releases of PFCs into the environment, and under MWPCA that 3M is responsible for compensation for future loss or destruction of fish, aquatic life and other damages.

In January 2011, the City of Lake Elmo filed a motion to intervene in the State of Minnesota lawsuit and seeks damages in excess of $50,000 and other legal and equitable relief, including reasonable attorneys' fees, for alleged contamination of city property, wells, groundwater and water contained in the wells with PFCs under several theories, including common law and statutory nuisance, strict liability, trespass, negligence, and conversion. The court granted the City of Lake Elmo's motion to intervene in this lawsuit.

In November 2011, the Metropolitan Council filed a motion to intervene and a complaint in the State of Minnesota lawsuit seeking damages in excess of $50,000 and other legal, declaratory and equitable relief, including reasonable attorneys' fees, for costs and fees that the Metropolitan Council alleges it will be required to assess at some time in the future if the MPCA imposes restrictions on Metropolitan Council's PFOS discharges to the Mississippi River. Metropolitan Council's intervention motion was based on several theories, including common law negligence, and statutory claims under MERLA for response costs and under the Minnesota Environmental Rights Act (MERA) for declaratory and equitable relief against 3M for PFOS and other PFC pollution of the waters and sediments of the Mississippi River. 3M did not object to the motion to intervene. In January 2012, 3M answered the Metropolitan Council's complaint and filed a counterclaim alleging that the Metropolitan Council discharges PFCs to the Mississippi River and discharges PFC-containing sludge and biosolids from one or more of its wastewater treatment plants onto agricultural lands and local area landfills. Accordingly, 3M requested that if the Court finds that the State is entitled to any of the damages the State seeks, 3M seeks contribution and apportionment from the Metropolitan Council, including attorneys' fees, under MERLA, and contribution from and liability for the Metropolitan Council's proportional share of damages awarded to the State under the MWPCA, as well as under statutory nuisance and common law theories of trespass, nuisance and negligence. 3M also seeks declaratory relief under MERA.

In May 2012, 3M filed a motion to disqualify the State of Minnesota's counsel, Covington & Burling, LLP (Covington). In October 2012, the court granted 3M's motion to disqualify Covington as counsel to the State and stayed discovery in the natural resources damages case for up to 180 days to give the State time to secure new counsel. In October 2012, the State and Covington appealed the court's disqualification to the Minnesota Court of Appeals.

In June 2009, the Company, along with more than 250 other companies, was served with a third-party complaint seeking contribution towards the cost of cleaning up a 17-mile stretch of the Passaic River in New Jersey. After commencing an enforcement action in 1990, the State of New Jersey filed suit against Maxus Energy, Tierra Solutions, Occidental Chemical and two other companies seeking cleanup and removal costs and other damages associated with the presence of dioxin and other hazardous substances in the sediment of the Passaic. The third-party complaint seeks to spread those costs among the third-party defendants, including 3M. Allegations asserted against 3M relate to its use of two commercial drum conditioning facilities in New Jersey. Currently, the State of New Jersey is actively negotiating with third-party defendants, including 3M, to settle pending claims related to the state's response costs. The potential scope of a state settlement remains uncertain and would not include release from potential federal claims, yet to be asserted, related to the final cleanup costs. Total costs for the remedy currently proposed by EPA could easily exceed $1 billion. While the Company does not yet have a basis for estimating its potential exposure in this case, or in the yet to be asserted EPA claim, the Company currently believes its allocable share of the possible loss, if any, is likely to be a fraction of one percent of the total costs because of the Company's limited potential involvement at this site.

For environmental litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company's consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time, with the exception of the Passaic River litigation, where the Company's potential exposure, if any, is likely to be a fraction of one percent of the total costs.

Environmental Liabilities and Insurance Receivables

As of December 31, 2012, the Company had recorded liabilities of $29 million for estimated “environmental remediation” costs based upon an evaluation of currently available facts with respect to each individual site and also recorded related insurance receivables of $11 million. The Company records liabilities for remediation costs on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company's commitment to a plan of action. Liabilities for estimated costs of environmental remediation, depending on the site, are based primarily upon internal or third-party environmental studies, and estimates as to the number, participation level and financial viability of any other potentially responsible parties, the extent of the contamination and the nature of required remedial actions. The Company adjusts recorded liabilities as further information develops or circumstances change. The Company expects that it will pay the amounts recorded over the periods of remediation for the applicable sites, currently ranging up to 20 years.

As of December 31, 2012, the Company had recorded liabilities of $57 million for “other environmental liabilities” based upon an evaluation of currently available facts to implement the Settlement Agreement and Consent Order with the MPCA, the remedial action agreement with ADEM, and to address trace amounts of perfluorinated compounds in drinking water sources in the City of Oakdale, Minnesota, as well as presence in the soil and groundwater at the Company's manufacturing facilities in Decatur, Alabama, and Cottage Grove, Minnesota, and at two former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). The Company expects that most of the spending will occur over the next four years. In 2012, the Company recorded expected insurance recoveries of $15 million related to “other environmental liabilities.”

It is difficult to estimate the cost of environmental compliance and remediation given the uncertainties regarding the interpretation and enforcement of applicable environmental laws and regulations, the extent of environmental contamination and the existence of alternative cleanup methods. Developments may occur that could affect the Company's current assessment, including, but not limited to: (i) changes in the information available regarding the environmental impact of the Company's operations and products; (ii) changes in environmental regulations, changes in permissible levels of specific compounds in drinking water sources, or changes in enforcement theories and policies, including efforts to recover natural resource damages; (iii) new and evolving analytical and remediation techniques; (iv) success in allocating liability to other potentially responsible parties; and (v) the financial viability of other potentially responsible parties and third-party indemnitors. For sites included in both “environmental remediation liabilities” and “other environmental liabilities,” at which remediation activity is largely complete and remaining activity relates primarily to operation and maintenance of the remedy, including required post-remediation monitoring, the Company believes the exposure to loss in excess of the amount accrued would not be material to the Company's consolidated results of operations or financial condition. However, for locations at which remediation activity is largely ongoing, the Company cannot estimate a possible loss or range of loss in excess of the associated established accruals for the reasons described above.

Compliance Matters

In November 2009, the Company contacted the Department of Justice (DOJ) and Securities and Exchange Commission (SEC) to voluntarily disclose that the Company was conducting an internal investigation as a result of reports it received about its subsidiary in Turkey, alleging bid rigging and bribery and other inappropriate conduct in connection with the supply of certain reflective and other materials and related services to Turkish government entities. The Company also contacted certain affected government agencies in Turkey. In September 2012, the Turkish Competition Authority issued its decision finding that there was insufficient evidence obtained in the investigation to find that 3M Turkey or the other companies investigated violated the Turkish competition law.

The Company retained outside counsel to conduct an assessment of its policies, practices, and controls and to evaluate its overall compliance with the Foreign Corrupt Practices Act (FCPA), including a review of its practices in certain other countries and acquired entities. As part of its review, the Company has also reported to the DOJ and SEC issues arising from transactions in other countries. In January 2013, the DOJ and SEC each notified the Company that they are terminating their investigations into possible violations of the FCPA without taking any action or imposing any fines against the Company.Among the reasons cited by the DOJ for closing its investigation included the Company's voluntary disclosure and cooperation, the Company's thorough investigation, and the steps the Company has taken to enhance its anti-corruption compliance program.

Other Matters

Commercial Litigation

In September 2010, various parties, on behalf of a purported class of shareholders of Cogent, Inc. (“Cogent”), commenced three lawsuits against the Company, Cogent, and its directors in the Delaware Court of Chancery. Plaintiffs allege that 3M, in connection with its tender offer for Cogent shares, aided and abetted the breach of fiduciary duties by Cogent directors and seek an unspecified amount of damages. The three cases were consolidated, expedited discovery was conducted, and Plaintiffs' motion for a preliminary injunction to enjoin the acquisition was denied on October 1, 2010. On November 15, 2010, plaintiffs filed an amended complaint that added Cogent directors appointed by 3M, as named defendants, and asserted additional claims of breach of fiduciary duties in connection with the acquisition and a subsequent offering period. 3M completed its acquisition of Cogent in December 2010. In March 2012, all parties to the litigation agreed to settle this litigation for an amount that is not material to the Company. On August 30, 2012, the Court of Chancery approved the settlement and dismissed plaintiffs' claims.

Separately, several purported holders of Cogent shares, representing a total of approximately 5.8 million shares, have asserted appraisal rights under Delaware law. The Company has answered the appraisal petition and is defending this matter vigorously. Trial in Delaware occurred in November 2012; post-trial briefing is ongoing.

In October 2012, four plaintiffs filed purported class actions against Ceradyne, its directors, 3M and Cyborg Acquisition Corporation (a direct wholly owned subsidiary of 3M) in connection with 3M's proposed acquisition of Ceradyne. Two suits were filed in California Superior Court for Orange County and two were filed in the Delaware Chancery Court. The suits seek principally to enjoin the proposed acquisition of Ceradyne, and allege that the defendants breached and/or aided and abetted the breach of their fiduciary duties to Ceradyne by seeking to sell Ceradyne through an allegedly unfair process and for an unfair price and on unfair terms, and/or by allegedly failing to make adequate disclosures to Ceradyne stockholders regarding the proposed acquisition of Ceradyne. The California court consolidated the two California actions. In the Delaware cases, the plaintiffs' motions to expedite proceedings, which the defendants have opposed, was denied by the Delaware Chancery Court. The parties reached a settlement of those matters for an amount that is not material to the Company. The settlement papers are presently being drafted, and the settlement will be presented to the California court for preliminary and final approval.

Separately, one Ceradyne shareholder, who purports to hold 16,656 shares, filed a petition for appraisal rights under Delaware law.

3M filed suit against Avery Dennison Corporation in the United States District Court for the District of Minnesota in June 2010, alleging that Avery's OmniCube™ full cube retroreflective sheeting products, which are used for highway signage, infringe a number of 3M patents. 3M's motion to preliminarily enjoin the sales of Avery's OmniCuberetroreflective sheeting was denied in December 2010. 3M also sought a declaratory judgment from the District Court in Minnesota that 3M's Diamond Grade™ DG3 full cube retroreflective sheeting does not infringe two Avery patents. The District Court granted Avery's motion to dismiss 3M's declaratory judgment suit in March 2011. 3M appealed the dismissal of the declaratory judgment lawsuit, and in January 2012, the Federal Circuit Court of Appeals issued a decision reversing the district court and reinstating the declaratory judgment action. Avery did not appeal this decision, and that action, including Avery's counterclaims against 3M for infringement of the Avery patents, is proceeding in the District Court in Minnesota. In October 2010, Avery Dennison filed a lawsuit against the Company in the United States District Court for the Central District of California, alleging that 3M monopolized or attempted to monopolize the markets for Type XI retroreflective sheeting and for broad high performance sheeting in violation of the Sherman Act, as well as other claims. Avery alleges that 3M manipulated the standards-setting process of the American Society for Testing and Materials (ASTM), a private organization responsible for creating standards for, among other things, retroreflective sheeting used for highway signage; entered into illegal and anticompetitive contracts; and engaged in other anticompetitive acts including false advertising and disparagement. 3M's motion to transfer the antitrust case to the United States District Court for the District of Minnesota was granted in February 2011. 3M's patent infringement lawsuit against Avery, the declaratory judgment action against Avery (with Avery's patent infringement counterclaims), and Avery's antitrust suit against 3M are moving forward in the Minnesota Court.

In March 2012, the district court issued its claim construction ruling in the 3M patent case, finding in 3M's favor on 16 of the 19 disputed terms. Fact and expert discovery in that case have concluded and the parties are awaiting oral argument on pending motions for summary judgment on certain matters filed by both parties. Avery has sought reexamination of the five 3M patents in suit. The U.S. Patent and Trademark Office (US PTO) granted reexamination and issued a first Office Action rejecting all claims for two of the patents in suit. The US PTO denied in whole Avery's request for reexamination of one of the patents in suit.

Fact discovery is also complete in the antitrust case and expert discovery is ongoing. Fact discovery is ongoing in the declaratory judgment case involving Avery's patents and the parties are beginning the claim construction process. Avery filed a motion to join all three cases for trial, a motion that the Court denied. Accordingly, the 3M patent infringement case is expected to go to trial late in 2013.

3M sued TransWeb Corporation in Minnesota in 2010 for infringement of several 3M patents covering fluorination and hydrocharging of filter media used in 3M's respirators and furnace filters. TransWeb does not make finished goods, but sells media to competitors of 3M's respirator and furnace filter businesses. TransWeb filed a declaratory judgment action in and successfully moved the litigation to the United States District Court for the District of New Jersey, seeking a declaration of invalidity and non-infringement of 3M's patents, and further alleging that 3M waited too long to enforce its rights. TransWeb also alleged 3M obtained the patents through inequitable conduct and that 3M's attempt to enforce the patents constitutes a violation of the antitrust laws. On November 30, 2012, the jury returned a verdict in favor of TransWeb on all but one count, including findings that 3M's patents were invalid and not infringed, and that 3M had committed an antitrust violation by seeking to enforce a patent it had obtained fraudulently. The jury also recommended that the court find 3M had committed inequitable conduct in obtaining the patents, and that the patents were therefore unenforceable. Since the vast majority of TransWeb's claim for treble antitrust damages is in the form of its attorneys' fees and expenses in connection with the defense of the patent case, the parties agreed that the measure of damages would not go to the jury, but rather would be submitted to a special master after the trial. It is expected this process will take several months, and the special master's recommendations would then be forwarded to the court for review and entry of a final judgment. 3M intends to appeal.

In December 2010, Meda AB, the Swedish-based acquirer of 3M's European pharmaceutical business, filed a lawsuit against 3M, 3M Innovative Properties Company, and Riker Laboratories, Inc. (collectively, "3M"). Meda initially asserted claims against 3M for breach of contract and breach of the implied covenant of good faith and fair dealing. In October 2011, Meda amended its pleading to assert a claim for fraud. All three claims are based on allegations that 3M did not inform Meda about certain information relating to the pricing of a particular drug in France prior to the acquisition. Meda seeks to recover compensatory damages in excess of $300 million (including prejudgment interest), punitive damages, and attorneys' fees. In September 2012, 3M filed a motion for summary judgment on the grounds that Meda cannot establish a breach of any duty owed by 3M. A non-jury trial started in the United States District Court for the Southern District of New York in January 2013. The court is expected to issue its decision in the first quarter of 2013.

Shurtape Technologies, LLC sued 3M in the United States District Court for the Western District of North Carolina, alleging that 3M's ScotchBlue™ Painter's Masking Tape with Edge-Lock™ Paint Line Protector, which was introduced in late 2009, infringes Shurtape's U.S. patent describing masking tape having an absorbent coating applied to the edge of the tape and several of Shurtape's trademarks. 3M requested reexamination of the Shurtape patent, and in November 2012, the US PTO issued an office action adopting many of 3M's invalidity arguments and rejecting all claims in the Shurtape patent. 3M has also filed a motion with the district court asking that the litigation be stayed pending resolution of the reexamination. Shurtape has opposed that motion and the court has not yet ruled. Trial is anticipated in late 2013 or early 2014.

For commercial litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company's consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes that such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time.

Product Liability Litigation

Électricité de France (EDF) filed a lawsuit against 3M France in the French courts in 2006 claiming commercial loss and property damage after experiencing electrical network failures which EDF alleges were caused by so-called defective 3M transition splices. The French Court of Appeals at Versailles affirmed the commercial trial court's decision that the transition splices conformed to contract specifications which were thoroughly analyzed and tested by EDF before purchase and installation. The Court of Appeals, however, ordered a court-appointed expert to study the problem and issue a technical opinion on the cause of the network failures. In spite of considerable testing of 3M's splices over several years, the court-appointed expert has been unable to identify a defect in the 3M splices and to determine the definitive cause of the network failures. The court-appointed expert is expected to submit his final report to the commercial court by June 30, 2013. Thereafter, the commercial court may take from six months to one year to render its decision.

One customer obtained an order in the French courts against 3M Purification SAS (a French subsidiary) in October 2011 appointing an expert to determine the amount of commercial loss and property damage allegedly caused by so-called defective 3M filters used in the customer's manufacturing process. An Austrian subsidiary of this same customer also filed a claim against 3M Austria GmbH (an Austrian subsidiary) and 3M Purification SAS in the Austrian courts in September 2012 seeking damages for the same issue. Another customer filed a lawsuit against 3M Deutschland GmbH (a German subsidiary) in the German courts in March 2012 seeking commercial loss and property damage allegedly caused by so-called defective 3M filters used in that customer's manufacturing process. The Company has resolved on an amicable basis claims of two other customers arising out of the same issue.

For product liability litigation matters described in this section for which a liability has been recorded, the Company believes the amount recorded is not material to the Company's consolidated results of operations or financial condition. In addition, the Company is not able to estimate a possible loss or range of loss in excess of the established accruals at this time.

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Long-Term Debt and Short-Term Borrowings (Tables)

12 Months Ended

Dec. 31, 2012

Long-Term Debt and Short-Term Borrowings

Schedule of Long-Term Debt

Long-Term Debt
	Currency/	Effective		Final
(Millions)	Fixed vs.	Interest		Maturity
Description / 2012 Principal Amount	Floating	Rate		Date	2012		2011
Eurobond (775 million Euros)	Euro Fixed	4.30	%	2014	$	1,034	$	1,017
Medium-term note ($1 billion)	USD Fixed	1.62	%	2016		994		992
Medium-term note ($850 million)	USD Fixed	4.42	%	2013		850		849
30-year bond ($750 million)	USD Fixed	5.73	%	2037		747		747
Medium-term note ($650 million)	USD Fixed	1.10	%	2017		647		―
Medium-term note ($600 million)	USD Fixed	2.17	%	2022		592		―
Medium-term note	USD Fixed	―	%	―		―		500
Eurobond (250 million Euros)	Euro Floating	0.88	%	2014		349		347
30-year debenture ($330 million)	USD Fixed	6.01	%	2028		347		348
UK borrowing (66 million GBP)	GBP Floating	1.34	%	2015		106		―
Floating rate note ($97 million)	USD Floating	0.00	%	2041		97		97
Floating rate note ($59 million)	USD Floating	0.00	%	2044		59		59
Other borrowings	Various	0.36	%	2013-2040		80		91
Total long-term debt					$	5,902	$	5,047
Less: current portion of long-term debt						986		563
Long-term debt (excluding current portion)					$	4,916	$	4,484

Schedule of Short-Term Borrowings and Current Portion of Long-Term Debt

Short-Term Borrowings and Current Portion of Long-Term Debt
	Effective
(Millions)	Interest Rate		2012		2011
Current portion of long-term debt	3.83	%	$	986	$	563
U.S. dollar commercial paper	―	%		―		―
Other borrowings	4.70	%		99		119
Total short-term borrowings and current portion of long-term debt			$	1,085	$	682

Schedule of Weighted-Average Effective Interest Rate

Weighted-Average Effective Interest Rate
	Total
At December 31	2012		2011
Short-term	3.91	%	4.32	%
Long-term	3.16	%	3.76	%

Schedule of Maturities of long-term debt

Maturities of long-term debt for the five years subsequent to December 31, 2012 are as follows (in millions):
										After
2013		2014		2015		2016		2017		2017		Total
$	986	$	1,481	$	107	$	994	$	648	$	1,686	$	5,902

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Business Segments (Details)	12 Months Ended
	Dec. 31, 2012 Segment
Business Segments
Number of operating business segments	5

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Business Segments

12 Months Ended

Dec. 31, 2012

Business Segments

Business Segments

NOTE 15. Business Segments

3M's businesses are organized, managed and internally grouped into segments based on differences in markets, products, technologies and services. Effective in the first quarter of 2013 (as discussed below), 3M manages its operations in five operating business segments: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. 3M's five business segments bring together common or related 3M technologies, enhancing the development of innovative products and services and providing for efficient sharing of business resources. These segments have worldwide responsibility for virtually all 3M product lines. 3M is not dependent on any single product/service or market. Transactions among reportable segments are recorded at cost. 3M is an integrated enterprise characterized by substantial intersegment cooperation, cost allocations and inventory transfers. Therefore, management does not represent that these segments, if operated independently, would report the operating income information shown. The difference between operating income and pre-tax income relates to interest income and interest expense, which are not allocated to business segments.

Effective in the first quarter of 2013, 3M completed a realignment of its business groups (segments) to better serve global markets and customers. This realignment included:

• The alignment of divisions into five business groups (segments) as further described below.
• The combination of certain existing divisions into new divisions. These included Traffic Safety and Security Division (reflecting the combination of the former Traffic Safety Systems Division and Security Systems Division) and the Optical Systems Division (reflecting the combination of the former Optical Systems Division and Mobile Interactive Solutions Division).
• The movement of certain product lines between various divisions within and across certain business segments.

In addition to the above, there were also changes to dual credit amounts as a result of the realigned structure. The new structure is comprised of five business segments: Industrial, Safety and Graphics, Electronics and Energy, Health Care, and Consumer.

Industrial: This business segment, previously referred to as Industrial and Transportation, is largely unchanged, except for the transfer of the Renewable Energy Division to the Electronics and Energy business segment.

Safety and Graphics: This business segment includes Architectural Markets, Building and Commercial Services, Commercial Graphics, Industrial Mineral Products, Personal Safety, and Traffic Safety and Security. This new business segment also reflects movement of certain product lines between various divisions.

Electronics and Energy: This business segment includes Communication Markets, Electrical Markets, Electronics Markets Materials, Electronic Solutions, Infrastructure Protection, Optical Systems, Renewable Energy, and 3M Touch Systems. This new business segment also reflects the movement of certain product lines between various divisions.

Health Care: This business segment is largely unchanged, except for the movement of certain product lines between various divisions.

Consumer: This business segment, previously referred to as Consumer and Office, is largely unchanged, except for the movement of certain product lines between various divisions.

Business Segment Products
Business Segment	Major Products
Industrial	Tapes, coated and nonwoven abrasives, adhesives, specialty materials, filtration products, closure systems for personal hygiene products, acoustic systems products, automotive components, abrasion-resistant films, structural adhesives and paint finishing and detailing products
Safety and Graphics	Personal protection products, traffic safety and security products, commercial graphics systems, commercial cleaning and protection products, floor matting, roofing granules for asphalt shingles, and track and trace solutions
Electronics and Energy	Optical films solutions for electronic displays, projection solutions, packaging and interconnection devices, insulating and splicing solutions for the electronics, telecommunications and electrical industries, touch screens and touch monitors, renewable energy component solutions, and infrastructure protection products
Health Care	Medical and surgical supplies, skin health and infection prevention products, drug delivery systems, dental and orthodontic products, health information systems and food safety products
Consumer	Sponges, scouring pads, high-performance cloths, consumer and office tapes, repositionable notes, indexing systems, construction and home improvement products, home care products, protective material products, and consumer and office tapes and adhesives

Business Segment Information
	Net Sales						Operating Income
(Millions)	2012		2011		2010		2012		2011		2010
Industrial	$	9,943	$	9,629	$	8,116	$	2,236	$	1,983	$	1,720
Safety and Graphics		5,471		5,458		4,873		1,217		1,237		1,138
Electronics and Energy		5,458		5,732		5,632		1,026		1,140		1,207
Health Care		5,138		5,011		4,492		1,641		1,484		1,357
Consumer		4,386		4,230		3,926		943		855		859
Corporate and Unallocated		4		9		11		(471)		(420)		(278)
Elimination of Dual Credit		(496)		(458)		(388)		(109)		(101)		(85)
Total Company	$	29,904	$	29,611	$	26,662	$	6,483	$	6,178	$	5,918

	Assets						Depreciation & Amortization						Capital Expenditures
(Millions)	2012		2011		2010		2012		2011		2010		2012		2011		2010
Industrial	$	8,587	$	7,553	$	6,486	$	323	$	337	$	312	$	415	$	383	$	304
Safety and Graphics		5,111		4,975		4,979		238		251		225		190		204		157
Electronics and Energy		5,512		5,296		5,196		266		255		243		350		274		293
Health Care		4,296		4,190		4,181		169		199		130		113		159		78
Consumer		2,445		2,423		2,169		110		102		101		105		98		70
Corporate and Unallocated		7,925		7,179		7,145		182		92		109		311		261		189
Total Company	$	33,876	$	31,616	$	30,156	$	1,288	$	1,236	$	1,120	$	1,484	$	1,379	$	1,091

Corporate and unallocated operating income includes a variety of miscellaneous items, such as corporate investment gains and losses, certain derivative gains and losses, certain insurance-related gains and losses, certain litigation and environmental expenses, corporate restructuring charges and certain under- or over-absorbed costs (e.g. pension, stock-based compensation) that the Company may choose not to allocate directly to its business segments. Because this category includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis.

3M business segment reporting measures include dual credit to business segments for certain U.S. sales and related operating income. Management evaluates each of its five operating business segments based on net sales and operating income performance, including dual credit U.S. reporting to further incentivize U.S. sales growth. As a result, 3M provides additional (“dual”) credit to those business segments selling products in the U.S. to an external customer when that segment is not the primary seller of the product. For example, certain respirators are primarily sold by the Personal Safety Division within the Safety and Graphics business segment; however, the Industrial business segment also sells this product to certain customers in its U.S. markets. In this example, the non-primary selling segment (Industrial) would also receive credit for the associated net sales it initiated and the related approximate operating income. The assigned operating income related to dual credit activity may differ from operating income that would result from actual costs associated with such sales. The offset to the dual credit business segment reporting is reflected as a reconciling item entitled “Elimination of Dual Credit,” such that sales and operating income for the U.S. in total are unchanged.

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Marketable Securities (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Marketable securities by contractual maturity
Due in one year or less	$ 912
Due after one year through three years	1,483
Due after three years through five years	414
Due after five years	1
Total marketable securities	$ 2,810	$ 2,357

XML

Consolidated Statement Of Changes In Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statement of Stockholders' Equity
Cash dividends paid per 3M common share (in dollars per share)	$ 2.36	$ 2.20	$ 2.10

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Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statement of Comprehensive Income (Loss)
Net income including noncontrolling interest	$ 4,511	$ 4,357	$ 4,163
Other comprehensive income (loss), net of tax
Cumulative translation adjustment	71	(250)	244
Defined benefit pension and postretirement plans adjustment	201	(1,280)	(42)
Debt and equity securities, unrealized gain (loss)	4	0	3
Cash flow hedging instruments, unrealized gain (loss)	(45)	54	4
Total other comprehensive income (loss), net of tax	231	(1,476)	209
Comprehensive income (loss) including noncontrolling interest	4,742	2,881	4,372
Comprehensive (income) loss attributable to noncontrolling interest	(23)	(80)	(115)
Comprehensive income (loss) attributable to 3M	$ 4,719	$ 2,801	$ 4,257

XML

Marketable Securities

12 Months Ended

Dec. 31, 2012

Marketable Securities

Marketable Securities

NOTE 8. Marketable Securities

The Company invests in agency securities, corporate securities, asset-backed securities, treasury securities and other securities. The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).

		December 31,		December 31,
(Millions)		2012		2011
U.S. government agency securities		$	162	$	119
Foreign government agency securities			16		8
Corporate debt securities			471		413
Commercial paper			116		30
Certificates of deposit/time deposits			41		49
U.S. treasury securities			54		―
U.S. municipal securities			13		9
Asset-backed securities:
	Automobile loan related		567		530
	Credit card related		123		244
	Equipment lease related		54		54
	Other		31		5
Asset-backed securities total			775		833
Current marketable securities		$	1,648	$	1,461
U.S. government agency securities		$	125	$	361
Foreign government agency securities			51		15
Corporate debt securities			494		255
U.S. treasury securities			18		34
U.S. municipal securities			14		5
Auction rate securities			7		4
Asset-backed securities:
	Automobile loan related		375		188
	Credit card related		34		24
	Equipment lease related		36		10
	Other		8		―
Asset-backed securities total			453		222
Non-current marketable securities		$	1,162	$	896
Total marketable securities		$	2,810	$	2,357

Classification of marketable securities as current or non-current is dependent upon management's intended holding period, the security's maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. At December 31, 2012, gross unrealized losses totaled approximately $6 million (pre-tax), while gross unrealized gains totaled approximately $3 million (pre-tax). At December 31, 2011, gross unrealized losses totaled approximately $12 million (pre-tax), while gross unrealized gains totaled approximately $3 million (pre-tax). Refer to Note 5 for a table that provides the net realized gains (losses)related to sales or impairments of debt and equity securities, which includes marketable securities. Cost of securities sold use the first in, first out (FIFO) method. Since these marketable securities are classified as available-for-sale securities, changes in fair value will flow through other comprehensive income, with amounts reclassified out of other comprehensive income into earnings upon sale or “other-than-temporary” impairment.

3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders' equity. Such an unrealized loss does not reduce net income attributable to 3M for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.

The balance at December 31, 2012 for marketable securities by contractual maturity are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

(Millions)	December 31, 2012
Due in one year or less	$	912
Due after one year through three years		1,483
Due after three years through five years		414
Due after five years		1
Total marketable securities	$	2,810

3M has a diversified marketable securities portfolio of $2.810 billion as of December 31, 2012. Within this portfolio, current and long-term asset-backed securities (estimated fair value of $1.228 billion) are primarily comprised of interests in automobile loans and credit cards. At December 31, 2012, all asset-backed securities were rated AAA or A-1+ by Standard & Poor's and/or Aaa or P-1 by Moody's Investors Service and/or AAA or F1+ by Fitch Ratings.

3M's marketable securities portfolio includes auction rate securities that represent interests in investment grade credit default swaps; however, currently these holdings comprise less than one percent of this portfolio. The estimated fair value of auction rate securities are $7 million and $4 million as of December 31, 2012 and 2011, respectively. Gross unrealized losses within accumulated other comprehensive income related to auction rate securities totaled $6 million (pre-tax) and $9 million (pre-tax) as of December 31, 2012 and 2011, respectively. As of December 31, 2012, auction rate securities associated with these balances have been in a loss position for more than 12 months. Since the second half of 2007, these auction rate securities failed to auction due to sell orders exceeding buy orders. Liquidity for these auction-rate securities is typically provided by an auction process that resets the applicable interest rate at pre-determined intervals, usually every 7, 28, 35, or 90 days. The funds associated with failed auctions will not be accessible until a successful auction occurs or a buyer is found outside of the auction process. Refer to Note 12 for a table that reconciles the beginning and ending balances of auction rate securities.

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Commitments and Contingencies (Details 6)	12 Months Ended
	Dec. 31, 2012
Product Liability - Filters
Product Liability Litigation
Number of customers who obtained an order in the French Courts against SAS 3M Purification	1
Number of customers who filed a lawsuit against 3M Deutshland GmbH	1
Number of other customers the Company has resolved claims with	2
Product Liability Litigation - EDF
Product Liability Litigation
Number of lawsuits filed	1
Estimated time commercial court may take to render decision, low end of range	6 months
Estimated time commercial court may take to render decision, high end of range	1 year

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Commitments and Contingencies (Details 3)	Dec. 31, 2012 Claim Claimant
Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending	1,149
Number of lawsuits pending, specific claims asserted percentage	40.00%
Number of defendants included in typical complaint, low end of range	12
Number of defendants included in typical complaint, high end of range	100
Number of lawsuits pending, specific claims asserted	465
Less than $100,000 specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	281
Less than $100,000 specific damages | $15 thousand punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	18
Less than $100,000 specific damages | $10 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	13
Less than $100,000 specific damages | $20 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	3
More than $100,000 and less than $3 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	59
More than $100,000 and less than $3 million specific damages | $250 thousand punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	45
More than $100,000 and less than $3 million specific damages | $1 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	8
More than $3 million and less than $7.5 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	7
More than $3 million and less than $7.5 million specific damages | $5 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	7
$10 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	5
$10 million specific damages | $10 million punitive damages
Loss contingencies
Number of lawsuits pending, specific claims asserted	4
$50 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	4
$50 million specific damages | $50 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	4
Excess of $50 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	37
Excess of $50 million specific damages | $100 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	36
More than $10 million and less than $50 million specific damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	72
More than $10 million and less than $50 million specific damages | $13 million punitive damages | Respirator Mask/Asbestos Litigation
Loss contingencies
Number of lawsuits pending, specific claims asserted	72

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Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Jan. 31, 2013	Jun. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	3M CO
Entity Central Index Key	0000066740
Document Type	8-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$ 69.4	$ 61.9
Entity Common Stock, Shares Outstanding		689,990,255
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY

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Long-Term Debt and Short-Term Borrowings

12 Months Ended

Dec. 31, 2012

Long-Term Debt and Short-Term Borrowings

Long-Term Debt and Short-Term Borrowings

NOTE 9. Long-Term Debt and Short-Term Borrowings

The following debt tables reflect interest rates, including the effects of interest rate swaps, as of December 31, 2012. Long-term debt and short-term borrowings as of December 31 consisted of the following:

Long-Term Debt
	Currency/	Effective		Final
(Millions)	Fixed vs.	Interest		Maturity
Description / 2012 Principal Amount	Floating	Rate		Date	2012		2011
Eurobond (775 million Euros)	Euro Fixed	4.30	%	2014	$	1,034	$	1,017
Medium-term note ($1 billion)	USD Fixed	1.62	%	2016		994		992
Medium-term note ($850 million)	USD Fixed	4.42	%	2013		850		849
30-year bond ($750 million)	USD Fixed	5.73	%	2037		747		747
Medium-term note ($650 million)	USD Fixed	1.10	%	2017		647		―
Medium-term note ($600 million)	USD Fixed	2.17	%	2022		592		―
Medium-term note	USD Fixed	―	%	―		―		500
Eurobond (250 million Euros)	Euro Floating	0.88	%	2014		349		347
30-year debenture ($330 million)	USD Fixed	6.01	%	2028		347		348
UK borrowing (66 million GBP)	GBP Floating	1.34	%	2015		106		―
Floating rate note ($97 million)	USD Floating	0.00	%	2041		97		97
Floating rate note ($59 million)	USD Floating	0.00	%	2044		59		59
Other borrowings	Various	0.36	%	2013-2040		80		91
Total long-term debt					$	5,902	$	5,047
Less: current portion of long-term debt						986		563
Long-term debt (excluding current portion)					$	4,916	$	4,484

Short-Term Borrowings and Current Portion of Long-Term Debt
	Effective
(Millions)	Interest Rate		2012		2011
Current portion of long-term debt	3.83	%	$	986	$	563
U.S. dollar commercial paper	―	%		―		―
Other borrowings	4.70	%		99		119
Total short-term borrowings and current portion of long-term debt			$	1,085	$	682

The following weighted-average effective interest rate table reflects the combined effects of interest rate and currency swaps at December 31, 2012 and 2011.

Weighted-Average Effective Interest Rate
	Total
At December 31	2012		2011
Short-term	3.91	%	4.32	%
Long-term	3.16	%	3.76	%

Maturities of long-term debt for the five years subsequent to December 31, 2012 are as follows (in millions):
										After
2013		2014		2015		2016		2017		2017		Total
$	986	$	1,481	$	107	$	994	$	648	$	1,686	$	5,902

Long-term debt payments due in 2013 and 2014 include floating rate notes totaling $132 million (classified as current portion of long-term debt) and $97 million, respectively, as a result of put provisions associated with these debt instruments.

The floating rate notes contain put provisions granting the holders the option to require 3M to repurchase the securities on certain dates. Under the terms of the floating rate notes due in 2044, holders have an annual put feature. 3M would be required to repurchase these securities at a discount to par ranging from 98 percent to 99 percent up until 2013, and at 100 percent of par value from 2014 and every anniversary thereafter until final maturity. Under the terms of the floating rate notes due in 2027, 2040, and 2041, holders have put options that commence ten years after the date of issuance and each third anniversary thereafter until final maturity. 3M would be required to repurchase these securities at various prices, ranging from 99 percent to 100 percent of par value according to the redemption schedules for each security. In 2011, 2010, 2009 and 2008, 3M was required to repurchase an immaterial amount of principal on the aforementioned floating rate notes.

The Company has a “well-known seasoned issuer” shelf registration statement, effective August 5, 2011, which registers an indeterminate amount of debt or equity securities for future sales. In September 2011, in connection with this August 5, 2011 shelf registration statement, 3M established a $3 billion medium-term notes program (Series F), from which 3M issued $1 billion aggregate principal amount of five-year fixed rate medium-term notes with a coupon rate of 1.375%. In June 2012, 3M issued $650 million aggregate principal amount of five-year fixed rate medium-notes due 2017 with a coupon rate of 1.000% and $600 million aggregate principal amount of ten-year fixed rate medium-term notes due 2022 with a coupon rate of 2.000%, which were both issued from this $3 billion medium-term notes program (Series F). The designated use of these proceeds is for general corporate purposes.

In connection with a prior “well-known seasoned issuer” shelf registration, in June 2007 the Company established a $3 billion medium-term notes program. Three debt securities were issued under this medium-term notes program. First, in December 2007, 3M issued a five-year, $500 million, fixed rate note with a coupon rate of 4.65%, which matured in December 2012. Second, in August 2008, 3M issued a five-year, $850 million, fixed rate note with a coupon rate of 4.375%. Third, in October 2008, the Company issued a three-year $800 million, fixed rate note with a coupon rate of 4.50%. The Company entered into interest rate swaps to convert this $800 million note to a floating rate. This three-year fixed rate note and related interest rate swaps matured in the fourth quarter of 2011.

The Company also issued notes under a $1.5 billion medium-term note program established in December 2003. In March 2007, the Company issued a 30-year, $750 million, fixed rate note with a coupon rate of 5.70%. In November 2006, 3M issued a three-year, $400 million, fixed rate note. The Company entered into an interest rate swap to convert this to a rate based on a floating LIBOR index. Both the note and related swap matured in November 2009. In December 2004, 3M issued a 40-year, $60 million floating rate note, with the rate based on a floating LIBOR index. This $1.5 billion medium term note program was replaced by the $3 billion program established in June 2007.

In July 2007, 3M issued a seven-year 5.0% fixed rate Eurobond for an amount of 750 million Euros (book value of approximately $1.017 billion in U.S. Dollars at December 31, 2012). In addition, in December 2007, 3M reopened its existing seven year 5.0% fixed rate Eurobond for an additional amount of 275 million Euros (book value of approximately $366 million in U.S. Dollars at December 31, 2012). This security was issued at a premium and was subsequently consolidated with the original security in January 2008. Upon the initial debt issuance in July 2007, 3M completed a fixed-to-floating interest rate swap on a notional amount of 400 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation. In August 2010, the Company terminated 150 million Euros of the notional amount of this swap. As a result, the notional amount remaining after the partial termination is 250 million Euros. The termination of a portion of this swap did not impact the terms of the remaining portion. After these swaps, the fixed rate portion of the Eurobond totaled 775 million Euros and the floating rate portion totaled 250 million Euros.

The Company has an AA- credit rating, with a stable outlook, from Standard & Poor's and an Aa2 credit rating, with a stable outlook, from Moody's Investors Service. In September 2012, 3M entered into a $1.5 billion, five-year multi-currency revolving credit agreement, which amended the existing agreement that was entered into in August 2011. This amended agreement extended the expiration date from August 2016 to September 2017. This credit agreement includes a provision under which 3M may request an increase of up to $500 million, bringing the total facility up to $2 billion (at the lenders' discretion). This facility was undrawn at December 31, 2012. In August 2012, 3M entered into a $150 million, one-year committed letter of credit facility with HSBC Bank USA, which replaced the one-year $200 million committed credit facility that was entered into in August 2011. As of December 31, 2012, 3M letters of credit issued under this $150 million committed facility totaled $121 million. In December 2012, 3M entered into a three-year 66 million British Pound (approximately $106 million) committed credit facility agreement with JP Morgan Chase Bank, which is fully drawn as of December 31, 2012. Apart from the committed facilities, an additional $100 million in stand-alone letters of credit are also issued and outstanding at December 31, 2012. The Company also utilized $37 million in international lines of credit and $6 million in U.S. lines of credit with other banking partners as of December 31, 2012. These letters of credit are utilized in connection with normal business activities. Under both the $1.5 billion and $150 million credit agreements, the Company is required to maintain its EBITDA to Interest Ratio as of the end of each fiscal quarter at not less than 3.0 to 1. This is calculated (as defined in the agreement) as the ratio of consolidated total EBITDA for the four consecutive quarters then ended to total interest expense on all funded debt for the same period. At December 31, 2012, this ratio was approximately 45 to 1.Debt covenants do not restrict the payment of dividends.

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Derivatives (Details 3) In Millions, unless otherwise specified	1 Months Ended		1 Months Ended		12 Months Ended						1 Months Ended
	Jul. 31, 2007 Eurobond 750 Million Euros Issued July2007	Dec. 31, 2012 Eurobond 750 Million Euros Issued July2007 USD ($)	Dec. 31, 2007 Eurobond 275 Million Euros Issued December2007	Dec. 31, 2012 Eurobond 275 Million Euros Issued December2007 USD ($)	Dec. 31, 2012 Net Investment Hedges USD ($)	Dec. 31, 2011 Net Investment Hedges USD ($)	Dec. 31, 2010 Net Investment Hedges USD ($)	Dec. 31, 2012 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Dec. 31, 2011 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Dec. 31, 2010 Net Investment Hedges Foreign Currency Denominated Debt USD ($)	Jul. 31, 2007 Net Investment Hedges Foreign Currency Denominated Debt Eurobond 750 Million Euros Issued July2007 EUR (€)	Dec. 31, 2007 Net Investment Hedges Foreign Currency Denominated Debt Eurobond 275 Million Euros Issued December2007 EUR (€)
Net investment hedges
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument					$ (29)	$ 41	$ 111	$ (29)	$ 41	$ 111
Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income					0	0	0	0	0	0
Term of debt instrument	7 years		7 years								7 years	7 years
Face amount		$ 1,017		$ 366							€ 750	€ 275

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Commitments and Contingencies (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012 Claimant Claim	Dec. 31, 2011 Claimant	Dec. 31, 2010
Respirator Mask/Asbestos Litigation
Loss contingencies
Accrued loss contingency reserve	$ 154,000,000	$ 130,000,000	$ 126,000,000
Insurance receivables	87,000,000	121,000,000	122,000,000
Number of individual claimants	2,060	2,260
Number of total claims settled and taken to trial	9
Number of total claims tried to verdict	8
Number of total claims settled and tried to verdict	7
Number of total claims dismissed	1
Increase in insurance liabilities	71,000,000
Increase in insurance recovery receivable	39,000,000
Payments for fees and settlements related to litigation	45,000,000
Respirator Mask/Asbestos Litigation - State of West Virginia
Loss contingencies
Number of additional defendants	2
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	126,000,000
Insurance Disclaimer Action
Loss contingencies
Payments received in connection with respirator mask/asbestos receivable	72,000,000
Number of insurers who filed a declaratory judgment action against the company	2
Number of the entity's insurers named in the action, low end of range	60
Litigation settlement awarded	87,000,000
Respirator Mask/Asbestos Litigation - Aearo Technologies
Loss contingencies
Accrued loss contingency reserve	28,000,000
Annual fee paid to Cabot to retain responsibility and liability for products manufactured before July 11, 1995	400,000
Environmental Matters - Remediation
Loss contingencies
Accrued loss contingency reserve	29,000,000	28,000,000	24,000,000
Insurance receivables	11,000,000	15,000,000	15,000,000
Number of years remediation payments expected to be paid for applicable sites, high end of range	20 years
Environmental Matters - Regulatory Activities
Loss contingencies
Number of PFCs the EPA has proposed to have public water suppliers monitor	6
Number of years after phase-out decision in May 2000 that the Company stopped manufacturing and using vast majority of perfluorooctanyl compounds	2 years
Environmental Matters - Regulatory Activities | Alabama
Loss contingencies
Number of landfills to be tested by the entity pursuant to a Memorandum of Understanding with the EPA	3
Wastewater treatment plant sludge containing PFCs surrounding Decatur facility	20 years
Environmental Matters - Regulatory Activities | Minnesota
Loss contingencies
Number of sites where remediation work will continue into 2013	2
Environmental Matters - Litigation | Morgan County, Alabama
Loss contingencies
Total number of named plaintiffs, second purported class action	3
Environmental Matters - Litigation | Minnesota
Loss contingencies
Number of days court stayed discovery	180 days
Environmental Matters - Litigation | Lake Elmo, Minnesota
Loss contingencies
Claim asserted for alleged contamination, low end	50,000
Environmental Matters - Litigation | Metropolitan Council, Minnesota
Loss contingencies
Claim asserted for alleged contamination, low end	50,000
Number of wastewater treatment plants from which PFC-containing sludge and biosolids may allegedly be discharged by Metropolitan Council, low end of range	1
Environmental Matters - Litigation | New Jersey
Loss contingencies
Lower end of range of number of companies served with a complaint	250
Number of companies, in addition to Maxus Energy, Tierra Solutions and Occidental Chemical involved in an enforcement action	2
Total cost of clean-up proposed by the EPA, of which the Company believes its applicable share, if any, is likely to be a fraction of one percent	1,000,000,000
Total cost of cleanup proposed by EPA of which company believes its applicable share to be fraction of this maximum percentage (as a percent)	1.00%
Number of commercial drum conditioning facilities used	2
Environmental Matters - Other Environmental Litigation
Loss contingencies
Accrued loss contingency reserve	57,000,000	75,000,000	90,000,000
Insurance receivables	$ 15,000,000	$ 0	$ 0
Number of years remediation payments expected to be paid for applicable sites, high end of range	4 years
Number of former disposal sites with PFC present in soil and groundwater in Washington County Minnesota	2

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Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 2,883	$ 2,219
Marketable securities - current	1,648	1,461
Accounts receivable - net of allowances of $105 and $108	4,061	3,867
Inventories
Finished goods	1,754	1,536
Work in process	1,186	1,061
Raw materials and supplies	897	819
Total inventories	3,837	3,416
Other current assets	1,201	1,277
Total current assets	13,630	12,240
Marketable securities - non-current	1,162	896
Investments	163	155
Property, plant and equipment	22,525	21,166
Less: Accumulated depreciation	(14,147)	(13,500)
Property, plant and equipment - net	8,378	7,666
Goodwill	7,385	7,047
Intangible assets - net	1,925	1,916
Prepaid pension benefits	16	40
Other assets	1,217	1,656
Total assets	33,876	31,616
Current liabilities
Short-term borrowings and current portion of long-term debt	1,085	682
Accounts payable	1,762	1,643
Accrued payroll	701	676
Accrued income taxes	371	355
Other current liabilities	2,281	2,085
Total current liabilities	6,200	5,441
Long-term debt	4,916	4,484
Pension and postretirement benefits	3,086	3,972
Other liabilities	1,634	1,857
Total liabilities	15,836	15,754
Commitments and contingencies (Note 13)
3M Company shareholders' equity:
Common stock par value, $.01 par value, Shares outstanding - 2012: 687,091,650; Shares outstanding - 2011: 694,970,041	9	9
Additional paid-in capital	4,044	3,767
Retained earnings	30,679	28,348
Treasury stock	(12,407)	(11,679)
Accumulated other comprehensive income (loss)	(4,750)	(5,025)
Total 3M Company shareholders' equity	17,575	15,420
Noncontrolling interest	465	442
Total equity	18,040	15,862
Total liabilities and equity	$ 33,876	$ 31,616

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Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2012

Goodwill and Intangible Assets

Goodwill and Intangible Assets

NOTE 3. Goodwill and Intangible Assets

Purchased goodwill from acquisitions totaled $327 million in 2012, $41 million of which is deductible for tax purposes. Purchased goodwill from acquisitions totaled $255 million in 2011, $7 million of which is deductible for tax purposes. The acquisition activity in the following table also includes the net impact of adjustments to the preliminary allocation of purchase price for prior year acquisitions, which increased goodwill by $12 million in 2012 and increased goodwill by $4 million in 2011. The amounts in the “Translation and other” column in the following table primarily relate to changes in foreign currency exchange rates. The goodwill balance by business segment follows:

Goodwill

	Dec. 31,		2011		2011		Dec. 31,		2012		2012		Dec. 31,
	2010		acquisition		translation		2011		acquisition		translation		2012
(Millions)	Balance		activity		and other		Balance		activity		and other		Balance
Industrial	$	1,761	$	205	$	6	$	1,972	$	204	$	(2)	$	2,174
Safety and Graphics		1,746		3		(36)		1,713		41		(3)		1,751
Electronics and Energy		1,591		6		11		1,608		―		14		1,622
Health Care		1,517		3		(12)		1,508		88		2		1,598
Consumer		205		42		(1)		246		6		(12)		240
Total Company	$	6,820	$	259	$	(32)	$	7,047	$	339	$	(1)	$	7,385

As discussed in Note 15, effective in the first quarter of 2013, 3M completed a realignment of its business segments. Concurrent with this business segment realignment, certain products were also moved between business segments, with the resulting impact reflected in the goodwill balances by business segment above for all periods presented. For any product moves that resulted in reporting unit changes, the Company applied the relative fair value method to determine the impact on goodwill of the associated reporting units. During the first quarter of 2013, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed. The Company also completed its annual goodwill impairment test in the fourth quarter of 2012 for all reporting units and determined that no impairment existed. In addition, the Company had no impairments of goodwill in prior years.

Acquired Intangible Assets

For 2012, intangible assets (excluding goodwill) acquired through business combinations increased the gross carrying amount by $213 million. Balances are also impacted by changes in foreign currency exchange rates. The gross carrying amount and accumulated amortization of acquired intangible assets as of December 31, follow:

(Millions)		2012		2011
Patents		$	596	$	561
Other amortizable intangible assets (primarily tradenames and customer related
	intangibles)		2,456		2,323
Total gross carrying amount		$	3,052	$	2,884
Accumulated amortization — patents			(421)		(374)
Accumulated amortization — other			(833)		(717)
Total accumulated amortization		$	(1,254)	$	(1,091)
	Total finite-lived intangible assets — net	$	1,798	$	1,793
Non-amortizable intangible assets (primarily tradenames)			127		123
	Total intangible assets — net	$	1,925	$	1,916

3M has certain tradenames that are not amortized because of the long-time established name recognition in their respective industries.

Amortization expense for the years ended December 31 follows:
(Millions)		2012		2011		2010
Amortization expense	$	233	$	235	$	176

Expected amortization expense for acquired amortizable intangible assets recorded as of December 31, 2012 follows:
											After
(Millions)	2013		2014		2015		2016		2017		2017
Amortization expense	$	239	$	214	$	200	$	186	$	171	$	788

The preceding expected amortization expense is an estimate. Actual amounts of amortization expense may differ from estimated amounts due to additional intangible asset acquisitions, changes in foreign currency exchange rates, impairment of intangible assets, accelerated amortization of intangible assets and other events. 3M expenses the costs incurred to renew or extend the term of intangible assets.

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Acquisitions

12 Months Ended

Dec. 31, 2012

Acquisitions

Acquisitions

NOTE 2. Acquisitions

3M makes acquisitions of certain businesses from time to time that the Company feels align with its strategic intent with respect to, among other factors, growth markets and adjacent product lines or technologies.

The impact on the consolidated balance sheet of the purchase price allocations related to acquisitions, including adjustments relative to other acquisitions within the allocation period, follows. The allocations of purchase price related to the acquisitions of the business purchased from Federal Signal Corp. in September 2012, and Ceradyne, Inc. in November 2012 are considered preliminary, largely with respect to certain acquired property, plant and equipment; intangible assets; and tax-related assets and liabilities. Adjustments in 2012 to the preliminary purchase price allocations of other acquisitions within the allocation period were not material and primarily related to the 2011 acquisitions of Winterthur Technologie AG and the business acquired from GPI Group.

	2012 Acquisition Activity
(Millions)			Other		Total
Asset (Liability)	Ceradyne, Inc.		Acquisitions
Accounts receivable	$	55	$	29	$	84
Inventory		112		13		125
Other current assets		36		1		37
Marketable securities		250		―		250
Property, plant, and equipment		238		3		241
Purchased finite-lived intangible assets		127		86		213
Purchased indefinite-lived intangible assets		―		2		2
Purchased goodwill		198		141		339
Accounts payable and other liabilities, net of other assets		(100)		(27)		(127)
Interest bearing debt		(93)		(3)		(96)
Deferred tax asset/(liability)		(25)		3		(22)
Net assets acquired	$	798	$	248	$	1,046
Supplemental information:
Cash paid	$	850	$	248	$	1,098
Less: Cash acquired		52		―		52
Cash paid, net of cash acquired	$	798	$	248	$	1,046

	2011 Acquisitions Activity
(Millions)	Winterthur		Other		Total
Asset (Liability)	Technologie AG		Acquisitions
Accounts receivable	$	45	$	61	$	106
Inventory		69		59		128
Other current assets		6		36		42
Property, plant, and equipment		73		102		175
Purchased finite-lived intangible assets		226		116		342
Purchased goodwill		147		112		259
Accounts payable and other liabilities, net of other assets		(70)		(78)		(148)
Interest bearing debt		(79)		(24)		(103)
Deferred tax asset/(liability)		(58)		(28)		(86)
Net assets acquired	$	359	$	356	$	715
Noncontrolling interest		(56)		―		(56)
Net assets acquired excluding noncontrolling interest	$	303	$	356	$	659
Supplemental information:
Cash paid	$	327	$	376	$	703
Less: Cash acquired		34		20		54
Cash paid, net of cash acquired	$	293	$	356	$	649
Non-cash		10		―		10
Net assets acquired excluding noncontrolling interest	$	303	$	356	$	659

		2010 Acquisitions Activity
				Attenti
(Millions)				Holdings		Cogent		Other
Asset (Liability)		Arizant Inc.		S.A.		Inc.		Acquisitions		Total
Accounts receivable		$	15	$	23	$	34	$	21	$	93
Inventory			36		5		17		19		77
Other current assets			3		7		31		2		43
Marketable securities			―		―		380		―		380
Property, plant, and equipment			38		9		30		29		106
Purchased finite-lived intangible assets			362		90		142		69		663
Purchased goodwill			512		122		295		51		980
Accounts payable and other liabilities, net
	of other assets		(29)		(12)		(88)		(35)		(164)
Interest bearing debt			(31)		(21)		―		(53)		(105)
Deferred tax asset/(liability)			(141)		(16)		(47)		(21)		(225)
Net assets acquired		$	765	$	207	$	794	$	82	$	1,848
Supplemental information:
Cash paid		$	776	$	227	$	946	$	156	$	2,105
Less: Cash acquired			11		20		152		92		275
Cash paid, net of cash acquired		$	765	$	207	$	794	$	64	$	1,830
Non-cash (financed liability)			―		―		―		18		18
Net assets acquired		$	765	$	207	$	794	$	82	$	1,848

Goodwill resulting from business combinations is largely attributable to the existing workforce of the acquired businesses and synergies expected to arise after 3M's acquisition of these businesses. In-process research and development associated withCodeRyte, Inc. is reflected in the preceding 2012 table as purchased indefinite-lived intangible assets. Pro forma information related to acquisitions was not included because the impact on the Company's consolidated results of operations was not considered to be material.

In addition to business combinations, 3M periodically acquires certain tangible and/or intangible assets and purchases interests in certain enterprises that do not otherwise qualify for accounting as business combinations. These transactions are largely reflected as additional asset purchase and investment activity.

2012 acquisitions:

During 2012, 3M completed three business combinations. The purchase price paid for these business combinations (net of cash acquired) and the impact of other matters (net) during 2012 aggregated to $1.046billion.

(1) In April 2012, 3M (Health Care Business) purchased all of the outstanding shares of CodeRyte, Inc., an industry leader in clinical natural processing technology and computer-assisted coding solutions for healthcare outpatient providers, which is headquartered in Bethesda, Maryland.

(2) In September 2012, 3M (Safety and Graphics Business) purchased the net assets of Federal Signal Technologies Group from Federal Signal Corp., for a total purchase price of approximately $104 million. This business focuses on electronic toll collection and parking management hardware and software services, with primary facilities spread throughout the United States and in the U.K.

(3) In November 2012, 3M (Industrial Business) purchased all of the outstanding shares of Ceradyne, Inc. (Ceradyne) for $798 million, net of cash acquired. The net assets acquired in this transaction included $250 million of marketable securities and $93 million of debt, as indicated in the preceding 2012 table.Ceradyne, headquartered in Costa Mesa, California, is involved in the development and production of advanced technical ceramics for demanding applications in the automotive, oil and gas, solar, industrial, electronics and defense industries.

In December 2011, 3M (ConsumerBusiness) entered into a definitive agreement to acquire the Office and Consumer Products business of Avery Dennison Corp. (Avery). 3M and Avery withdrew from the regulatory approval process for this acquisition in September 2012 and subsequently announced that they had terminated this agreement in October 2012.3M has no remaining obligations resulting from the termination of this agreement.

Purchased identifiable finite-lived intangible assets related to acquisition activity in 2012 totaled $213 million. The associated finite-lived intangible assets acquired in 2012 will be amortized generally on a straight-line basis over a weighted-average life of 12 years (lives ranging from two to 20 years). Acquired in-process research and development and identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

2011 acquisitions:

During 2011, 3M completed nine business combinations. The purchase price paid for these business combinations (net of cash acquired) and the impact of other matters (net) during 2011 aggregated to $649 million.

(1) In January 2011, 3M (Industrial Business) purchased certain assets of Nida-Core Corp., a manufacturer of structural honeycomb core and fiber-reinforced foam core materials based in Port St. Lucie, Florida.

(2) In February 2011, 3M (Industrial Business) announced that it completed its acquisition of all of the outstanding shares of Alpha Beta Enterprise Co. Ltd., a manufacturer of box sealing tape and masking tape headquartered in Taipei, Taiwan.

(3) In February 2011, 3M (ConsumerBusiness) purchased all of the outstanding shares of Hybrivet Systems Inc., a provider of instant-read products to detect lead and other contaminants and toxins, which is based in Natick, Massachusetts.

(4) In early March 2011, 3M (Industrial Business) acquired a controlling interest in Winterthur via completion of a public tender offer. Winterthur, based in Zug, Switzerland, is a leading global supplier of precision grinding technology serving customers in the area of hard-to-grind precision applications in industrial, automotive, aircraft and cutting tools. As of the settlement date of the tendered shares (the business acquisition date), 3M owned approximately 86 percent of Winterthur shares via the tender and previous open market share purchases. The purchase price paid in the preceding table includes non-cash consideration of $10 million representing the business acquisition date fair value of shares previously owned by 3M as of December 31, 2010 and cash consideration paid, net of cash acquired, of $293 million for subsequently tendered and open market purchased shares through the business acquisition date. Following the business acquisition date, 3M purchased the remaining outstanding shares of its consolidated Winterthur subsidiary, increasing 3M's ownership interest to 100 percent as of December 31, 2011 as discussed in Note 5.

(5) In April 2011, 3M (Electronics and Energy Business) purchased all of the outstanding shares of AP&T Co. Ltd., based in Korea, which provides advanced sputtering and plating services, materials and manufacturing capabilities for flexible circuits for the mobile hand-held, touch-screen panel and display markets.

(6) In April 2011, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Original Wraps Inc., a company specializing in the creative business development, technology and design of personalization platforms for vehicles and vehicle accessories, which is based in Golden, Colorado.

(7) In July 2011, 3M (Industrial Business) purchased all of the outstanding shares of Advanced Chemistry & Technology Inc., a manufacturer of quick-cure, light-weight polysulfide sealants for aerospace applications, which is based in Garden Grove, California.

(8) In July 2011, 3M (Industrial Business) purchased certain assets of Piranha Plastics LLC, based in Santa Clara, California, which provides plastic molding and paint solutions to the automotive aftermarket.

(9) In October 2011, 3M (Consumer Business) acquired the do-it-yourself and professional business of GPI Group. GPI, headquartered in France, is a manufacturer and marketer of home improvement products such as tapes, hooks, insulation, and floor protection products and accessories.

Purchased identifiable finite-lived intangible assets related to acquisition activity in 2011 totaled $342 million. The associated finite-lived intangible assets acquired in 2011 will be amortized generally on a straight-line basis over a weighted-average life of 14 years (lives ranging from three to 20 years). Acquired identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

2010 acquisitions:

During 2010, 3M completed ten business combinations. The purchase price paid for these business combinations (net of cash acquired), contingent consideration paid for pre-2009 business combinations, and the impact of other matters (net) during 2010 aggregated to $1.83 billion. In addition, the Company recorded a financed liability of 1.7 billion Japanese Yen (approximately $18 million based on acquisition date exchange rates) as non-cash investing and financing activity, which related to April 2010 acquisition of the A-One branded label business and related operations (discussed further below).

(1) In January 2010, 3M (Consumer Business) purchased all of the outstanding shares of IncavasIndustria de Cabos e Vassouras Ltda., a manufacturer of floor care products based in Rio Grande do Sul, Brazil.

(2) In April 2010, 3M (Consumer Business) purchased a majority stake in the A-One branded label business and related operations, which is headquartered in Tokyo, Japan and has manufacturing, distribution and sales locations around Japan. The terms of this acquisition included embedded mirroring put and call options for a fixed price and five-year term with respect to the remaining minority shares. Accordingly, 3M recorded this business combination as an acquisition of all outstanding interests with a corresponding five-year financed liability of 1.7 billion Japanese Yen relative to the embedded put/call option as of the acquisition date. The Company records interest on this liability, which is recorded in other liabilities, at an annual rate of 1%.

(3) In May 2010, 3M (Health Care Business) purchased certain assets of J.R. Phoenix Ltd., a manufacturer of hand hygiene and skin care products for health care and professional use based in Kitchener, Ontario, Canada.

(4) In June 2010, 3M (Industrial Business) purchased all of the outstanding shares of MTI PolyFab Inc., a manufacturer of thermal and acoustic insulation for the aerospace industry. MTI PolyFab Inc. is based in Mississauga, Ontario, Canada.

(5) In July 2010, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Dailys Limited, a supplier of non-woven disposable protective clothing, primarily chemical protective coveralls for industrial use. Dailys Limited is based in Ellesmere Port, United Kingdom.

(6) In October 2010, 3M (Consumer Business) purchased certain assets of Ross Outdoor Sports Specialties, LLC, a Colorado-based manufacturer of fly fishing equipment and accessories.

(7) In October 2010, 3M (Health Care Business) purchased all of the outstanding shares of Hangzhou ORJ Medical Instrument and Material Co., Ltd., a manufacturer of orthodontic supplies based in Hangzhou, China.

(8) In October 2010, 3M (Health Care Business) purchased all of the outstanding shares of Arizant Inc., a manufacturer of patient warming solutions designed to prevent hypothermia in surgical settings based in Eden Prairie, Minnesota.

(9) In October 2010, 3M (Safety and Graphics Business) purchased all of the outstanding shares of Attenti Holdings S.A., a Tel Aviv, Israel-based supplier of remote people-monitoring technologies used for offender-monitoring applications and to assist eldercare facilities in monitoring and enhancing the safety of patients.

(10) In October 2010, 3M (Safety and Graphics Business) acquired a controlling interest in Cogent Inc. via a tender offer, and in December 2010 completed a second-step merger for the same amount per outstanding share as the tender offer, thereby acquiring the remaining noncontrolling interest in the company. Cogent Inc., based in Pasadena, California, is a provider of finger, palm, face and iris biometric systems for governments, law enforcement agencies, and commercial enterprises. The consideration paid in the preceding table includes $248 million related to the December 2010 acquisition of the remaining noncontrolling interest in Cogent, Inc. Net assets acquired in the Cogent Inc. transaction included $532 million of cash and marketable securities, as indicated in the preceding 2010 table.

Purchased identifiable intangible assets related to the acquisition activity in 2010 totaled $663 million. The associated finite-lived intangible assets acquired in 2010 will be amortized generally on a straight-line basis over a weighted-average life of 11 years (lives ranging from two to 17 years). Acquired identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material.

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation

Stock-Based Compensation

NOTE 14. Stock-Based Compensation

The 3M 2008 Long-Term Incentive Plan provides for the issuance or delivery of up to 64 million shares of 3M common stock pursuant to awards granted under the plan. In May 2012, shareholders approved an additional 36 million shares, increasing the number of approved shares to 100 million shares. Awards under this plan may be issued in the form of Incentive Stock Options, Nonqualified Stock Options, Progressive Stock Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units, Other Stock Awards, and Performance Units and Performance Shares. Awards denominated in shares of common stock other than options and Stock Appreciation Rights, per the 2008 Plan, count against the 100 million share limit as 3.38 shares for every one share covered by such award (for full value awards with grant dates prior to May 11, 2010), as 2.87 shares for every one share covered by such award (for full value awards with grant dates on or after May 11, 2010 and prior to May 8, 2012), or as 3.50 shares for every one share covered by such award (for full value awards with grant dates of May 8, 2012 or later). The remaining total shares available for grant under the 2008 Long Term Incentive Plan Program are 48,786,751 as of December 31, 2012.There were approximately 11,564 participants with outstanding options, restricted stock, or restricted stock units at December 31, 2012.

The Company's annual stock option and restricted stock unit grant is made in February to provide a strong and immediate link between the performance of individuals during the preceding year and the size of their annual stock compensation grants. The grant to eligible employees uses the closing stock price on the grant date. Stock options vest over a period from one to three years with the expiration date at 10 years from date of grant. Accounting rules require recognition of expense under a non-substantive vesting period approach, requiring compensation expense recognition when an employee is eligible to retire. Employees are considered eligible to retire at age 55 and after having completed five years of service. This retiree-eligible population represents 30 percent of the 2012 annual stock-based compensation award expense dollars; therefore, higher stock-based compensation expense is recognized in the first quarter. Beginning in 2007, the Company reduced the number of traditional stock options granted under the Management Stock Ownership Program (MSOP) plan by reducing the number of employees eligible to receive annual grants and by shifting a portion of the annual grant away from traditional stock options primarily to restricted stock units. However, associated with the reduction in the number of eligible employees, the Company provided a one-time “buyout” grant in 2007 of restricted stock units to the impacted employees. 3M also has granted progressive (reload) options. These options are nonqualified stock options that were granted to certain participants under the 1997 or 2002 MSOP, but for which the reload feature was eliminated in 2005 (on a prospective basis only). Participants who had options granted prior to this effective date may still qualify to receive new progressive (reload) stock options.

In addition to the annual grants, the Company makes other minor grants of stock options, restricted stock units and other stock-based grants. The Company issues cash settled Restricted Stock Units and Stock Appreciation Rights in certain countries. These grants do not result in the issuance of Common Stock and are considered immaterial by the Company.

Amounts recognized in the financial statements with respect to stock-based compensation programs, which include stock options, restricted stock, restricted stock units, performance shares, and the General Employees' Stock Purchase Plan (GESPP), are provided in the following table. Capitalized stock-based compensation amounts were not material for the twelve months ended 2012, 2011 and 2010. The income tax benefits shown in the table can fluctuate by period due to the amount of employee “disqualifying dispositions” related to Incentive Stock Options (ISOs). The Company last granted ISOs in 2002.

Stock-Based Compensation Expense
	Years ended December 31
(Millions)	2012		2011		2010
Cost of sales	$	27	$	29	$	31
Selling, general and administrative expenses		167		192		209
Research, development and related expenses		29		32		34
Stock-based compensation expenses	$	223	$	253	$	274
Income tax benefits	$	(67)	$	(80)	$	(98)
Stock-based compensation expenses, net of tax	$	156	$	173	$	176

The following table summarizes stock option activity during the twelve months ended December 31:
Stock Option Program
			2012			2011			2010
			Number of Options	Weighted Average Exercise Price		Number of Options	Weighted Average Exercise Price		Number of Options	Weighted Average Exercise Price
Under option —
	January 1		64,148,415	$	77.28	70,335,044	$	74.80	74,268,165	$	72.39
	Granted:
		Annual	5,770,190		87.91	5,514,500		89.46	5,788,313		78.79
		Progressive (Reload)	110,065		89.65	237,839		94.02	188,105		88.67
		Other	51,661		89.25	8,953		86.71	27,911		82.13
	Exercised		(13,123,617)		68.78	(11,625,863)		68.47	(9,678,654)		59.11
	Canceled		(391,684)		83.65	(322,058)		75.09	(258,796)		70.76
	December 31		56,565,030	$	80.33	64,148,415	$	77.28	70,335,044	$	74.80
Options exercisable
	December 31		45,207,143	$	78.78	52,644,364	$	76.90	58,201,617	$	75.87

Outstanding options under grant include grants from previous plans. For options outstanding at December 31, 2012, the weighted-average remaining contractual life was 55 months and the aggregate intrinsic value was $709 million. For options exercisable at December 31, 2012, the weighted-average remaining contractual life was 44 months and the aggregate intrinsic value was $637 million. As of December 31, 2012, there was $54 million of compensation expense that has yet to be recognized related to non-vested stock option based awards. This expense is expected to be recognized over the remaining weighted-average vesting period of 21months.

The total intrinsic values of stock options exercised during 2012, 2011 and 2010 was $282 million, $287 million and $263 million, respectively. Cash received from options exercised during 2012, 2011 and 2010 was $903 million, $796 million and $571 million, respectively. The Company's actual tax benefits realized for the tax deductions related to the exercise of employee stock options for 2012, 2011 and 2010 was $98million, $96 million and $93 million, respectively.

The Company does not have a specific policy to repurchase common shares to mitigate the dilutive impact of options; however, the Company has historically made adequate discretionary purchases, based on cash availability, market trends, and other factors, to satisfy stock option exercise activity.

For annual and progressive (reload) options, the weighted average fair value at the date of grant was calculated using the Black-Scholes option-pricing model and the assumptions that follow.

Stock Option Assumptions
	Annual									Progressive (Reload)
	2012			2011			2010			2012			2011			2010
Exercise price	$	87.89		$	89.47		$	78.72		$	87.89		$	93.94		$	86.72
Risk-free interest rate		1.1	%		2.8	%		2.8	%		0.2	%		0.4	%		0.6	%
Dividend yield		2.6	%		2.6	%		2.5	%		2.6	%		2.6	%		2.5	%
Volatility		24.5	%		22.0	%		25.7	%		23.4	%		21.5	%		33.2	%
Expected life (months)		74			72			72			19			15			17
Black-Scholes fair value	$	14.94		$	16.10		$	16.50		$	8.50		$	7.49		$	12.01

Expected volatility is a statistical measure of the amount by which a stock price is expected to fluctuate during a period. For the 2012 annual grant date, the Company estimated the expected volatility based upon the average of the most recent one year volatility, the median of the term of the expected life rolling volatility, the median of the most recent term of the expected life volatility of 3M stock, and the implied volatility on the grant date. The expected term assumption is based on the weighted average of historical grants.

The following table summarizes restricted stock and restricted stock unit activity during the twelve months endedDecember 31, 2012:

Restricted Stock and Restricted Stock Units
				2012			2011			2010
					Weighted Average			Weighted Average			Weighted Average
				Number of	Grant Date		Number of	Grant Date		Number of	Grant Date
				Awards	Fair Value		Awards	Fair Value		Awards	Fair Value
Nonvested balance —
	As of January 1			4,858,972	$	73.02	4,812,657	$	68.75	4,379,480	$	68.85
		Granted
			Annual	968,522		87.92	889,448		89.46	902,549		78.81
			Other	99,337		85.07	351,624		87.07	527,823		70.09
		Vested		(2,594,468)		63.51	(1,077,816)		72.21	(948,233)		79.12
		Forfeited		(70,801)		82.65	(116,941)		72.01	(48,962)		76.22
	As of December 31			3,261,562	$	85.17	4,858,972	$	73.02	4,812,657	$	68.75

As of December 31, 2012, there was $79million of compensation expense that has yet to be recognized related to non-vested restricted stock and restricted stock units. This expense is expected to be recognized over the remaining weighted-average vesting period of25months. The total fair value of restricted stock and restricted stock units that vested during the twelve months endedDecember 31, 2012,2011 and 2010 was $228 million, $102million and $75 million, respectively. The Company's actual tax benefits realized for the tax deductions related to the vesting of restricted stock and restricted stock units for the twelve months ended December 31, 2012, 2011 and 2010was$86million, $36million and $20 million, respectively.

Restricted stock units granted under the 3M 2008 Long-Term Incentive Plan generally vest three years following the grant date assuming continued employment. The one-time “buyout” restricted stock unit grant in 2007 vested at the end of five years. Restricted stock unit grants issued in 2008 and prior did not accrue dividends during the vesting period. Beginning in 2009, dividend equivalents equal to the dividends payable on the same number of shares of 3M common stock accrue on these restricted stock units during the vesting period, although no dividend equivalents are paid on any of these restricted stock units that are forfeited prior to the vesting date. Dividends are paid out in cash at the vest date on restricted stock units, except for performance shares which do not earn dividends. Since the rights to dividends are forfeitable, there is no impact on basic earnings per share calculations. Weighted average restricted stock unit shares outstanding are included in the computation of diluted earnings per share.

Performance Shares

Beginning in 2008, the Company grants certain members of executive management performance shares on an annual basis. The performance criteria, which were modified in 2010, are designed to focus management attention on three key factors that create long-term stockholder value: Organic Sales Volume Growth, Return on Invested Capital and sales from new products. The number of shares of 3M common stock that could actually be delivered at the end of the three-year performance period may be anywhere from 0% to 200% of each performance share granted, depending on the performance of the Company during such performance period. Non-substantive vesting requires that expense for the performance shares be recognized over one or three years depending on when each individual became a 3M executive. The first performance shares, which were granted in 2008, were distributed in 2011. Performance shares do not accrue dividends during the performance period. Therefore, the grant date fair value is determined by reducing the closing stock price on the date of grant by the net present value of dividends during the performance period. As a result of the significant uncertainty due to the economic crisis of 2008-2009, the Company granted restricted stock units instead of performance shares in 2009. Therefore, since there were no performance shares in 2009, there were also no related distributions in 2012. Performance share grants resumed in 2010 and continued thereafter.

The following table summarizes performance share activity during the twelve months endedDecember 31, 2012:

			2012			2011			2010
				Weighted Average			Weighted Average			Weighted Average
			Number of	Grant Date		Number of	Grant Date		Number of	Grant Date
			Awards	Fair Value		Awards	Fair Value		Awards	Fair Value
Undistributed balance —
	As of January 1		878,872	$	78.55	760,645	$	73.99	―	$	―
		Granted	467,531		81.55	415,024		84.58	370,575		74.46
		Distributed	―		―	(206,410)		72.77	―		―
		Performance change	(178,838)		81.27	(39,323)		82.10	396,390		73.55
		Forfeited	(78,481)		80.21	(51,064)		80.20	(6,320)		73.92
	As of December 31		1,089,084	$	79.27	878,872	$	78.55	760,645	$	73.99

As of December 31, 2012, there was $11million of compensation expense that has yet to be recognized related to performance shares. This expense is expected to be recognized over the remaining weighted-average earnings period of 11months. There were no performance shares distributed or related tax benefits realized during thetwelve months endedDecember 31, 2012 and 2010. For the twelve months endedDecember 31, 2011, the total fair value of performance shares that were distributed was $18million and actual tax benefits realized for the tax deductions related to the distribution of performance shares was $5million.

General Employees' Stock Purchase Plan (GESPP):

In May 2012, shareholders approved an additional 30 million shares for issuance under the Company's GESPP, increasing the number of approved shares to 60 million shares. Substantially all employees are eligible to participate in the plan. Participants are granted options at 85% of market value at the date of grant. There are no GESPP shares under option at the beginning or end of each year because options are granted on the first business day and exercised on the last business day of the same month.

General Employees' Stock Purchase Plan
		2012			2011			2010
			Weighted			Weighted			Weighted
			Average			Average			Average
		Shares	Exercise Price		Shares	Exercise Price		Shares	Exercise Price
Options granted		1,455,545	$	75.32	1,433,609	$	73.67	1,325,579	$	70.57
Options exercised		(1,455,545)		75.32	(1,433,609)		73.67	(1,325,579)		70.57
Shares available for grant -
	December 31	31,445,207			2,900,751			4,334,360

The weighted-average fair value per option granted during 2012, 2011 and 2010 was $13.29, $13.00 and $12.45, respectively. The fair value of GESPP options was based on the 15% purchase price discount. The Company recognized compensation expense for GESSP options of $19million in 2012, $19 million in 2011 and $17 million in 2010.

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Pension and Postretirement Benefit Plans

12 Months Ended

Dec. 31, 2012

Pension and Postretirement Benefit Plans

Pension and Postretirement Benefit Plans

NOTE 10. Pension and Postretirement Benefit Plans

3M has company-sponsored retirement plans covering substantially all U.S. employees and many employees outside the United States. In total, 3M has over 70 plans in 25 countries. Pension benefits associated with these plans generally are based on each participant's years of service, compensation, and age at retirement or termination. The U.S. defined-benefit pension plan was closed to new participants effective January 1, 2009. The Company also provides certain postretirement health care and life insurance benefits for substantially all of its U.S. employees who reach retirement age while employed by the Company. Most international employees and retirees are covered by government health care programs. The cost of company-provided postretirement health care plans for international employees is not material and is combined with U.S. amounts in the tables that follow.

The Company also sponsors employee savings plans under Section 401(k) of the Internal Revenue Code. These plans are offered to substantially all regular U.S. employees. Effective January 1, 2010, substantially all Company contributions to the plans are made in cash. During 2008 the Board of Directors approved various changes to the employee savings plans. For substantially all employees hired prior to January 1, 2009, employee 401(k) contributions of up to 6% of eligible compensation are matched at rates of 60% or 75%, depending on the plan the employee participated in. Employees hired on or after January 1, 2009 receive a cash match of 100% for employee 401(k) contributions of up to 6% of eligible compensation and also receive an employer retirement income account cash contribution of 3% of the participant's total eligible compensation. All contributions are invested in a number of investment funds pursuant to their elections. U.S. expenses related to employer contributions to these plans were $124 million, and $109 million and $97 million for 2012, 2011 and 2010, respectively. Various international countries also participate indefined contribution plans. International expenses related to employer contributions to these plans were $58 million, $54 million and $36 million for 2012, 2011 and 2010, respectively.

The Company's defined benefit pension funding policy is to deposit with independent trustees amounts allowable by law. Trust funds and deposits with insurance companies are maintained to provide pension benefits to plan participants and their beneficiaries. There are no plan assets in the non-qualified plan due to its nature. For its U.S. postretirement health care and life insurance benefit plans, the Company has set aside amounts at least equal to annual benefit payments with an independent trustee.

In August 2006, the Pension Protection Act (PPA) was signed into law in the U.S. The PPA transition rules increased the funding target for defined benefit pension plans to 100% of the target liability by 2011. 3M's U.S. qualified defined benefit plan does not have a mandatory cash contribution because the Company has a significant credit balance from previous discretionary contributions that can be applied to any PPA funding requirements.

In the fourth quarter of 2010, the Company made further changes to its U.S. postretirement benefit plans. As a result of these changes, the Company will transition all current and future retirees to the savings account benefits-based plan announced in 2008. These changes become effective beginning January 1, 2013, for all Medicare eligible retirees and their Medicare eligible dependents and January 1, 2015, for all non-Medicare eligible retirees and their eligible dependents.

In the second quarter of 2010, 3M's Brazilian subsidiary received approval from the government in Brazil to freeze its defined benefit pension plan. Effective March 31, 2010, participants in this subsidiary's pension plan no longer accrue additional pension benefits. As a result, the Company recorded a $22 million curtailment gain in the second quarter of 2010.

In December 2011, the Company began offering a voluntary early retirement incentive program to certain eligible participants of its U.S. pension plans who meet age and years of pension service requirements. The eligible participants who accepted the offer and retired on February 1, 2012 received an enhanced pension benefit. Pension benefits were enhanced by adding one additional year of pension service and one additional year of age for certain benefit calculations. 616 participants accepted the offer and retired on February 1, 2012. As a result, the Company incurred a $26 million charge related to these special termination benefits in the first quarter of 2012.

Effective July 1, 2012, 3M Canada closed its pension plans for salaried employees to new participants. The change did not trigger a plan remeasurement and therefore there is no immediate impact to the liability and expense.

3M was informed during the first quarter of 2009 that the general partners of WG Trading Company, in which 3M's benefit plans hold limited partnership interests, are the subject of a criminal investigation as well as civil proceedings by the SEC and CFTC (Commodity Futures Trading Commission). In March 2011, over the objections of 3M and six other limited partners of WG Trading Company,the district courtjudge ruled in favor of the court appointed receiver's proposed distribution plan. In April 2011, the 3M benefit plans received their share under the court-ordered distribution plan. 3M and six other limited partners of WG Trading Company have appealed the court's order to the United States Court of Appeals for the Second Circuit. The benefit plan trustee holdings of WG Trading Company interests were adjusted to reflect the decreased estimated fair market value, inclusive of estimated insurance proceeds, as of the annual measurement dates. The Company has insurance that it believes, based on what is currently known, will result in the recovery of a portion of the decrease in original asset value. As of the 2012 measurement date these holdings represented less than one percent of 3M's fair value of total plan assets. 3M currently believes that the resolution of these events will not have a material adverse effect on the consolidated financial position of the Company.

The following tables include a reconciliation of the beginning and ending balances of the benefit obligation and the fair value of plan assets as well as a summary of the related amounts recognized in the Company's consolidated balance sheet as of December 31 of the respective years. 3M also has certain non-qualified unfunded pension and postretirement benefit plans, inclusive of plans related to supplement/excess benefits for employees impacted by particular relocations and other matters, that individually and in the aggregate are not significant and which are not included in the tables that follow. The obligations for these plans are included within other liabilities in the Company's consolidated balance sheet and aggregated less than $40 million as of both December 31, 2012 and 2011.

			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
(Millions)			2012		2011		2012		2011		2012		2011
Change in benefit obligation
	Benefit obligation at beginning of year		$	14,499	$	12,319	$	5,332	$	4,912	$	2,108	$	1,828
	Acquisitions			11		―		26		48		―		―
	Service cost			254		206		124		124		78		61
	Interest cost			587		626		247		261		86		92
	Participant contributions			―		―		5		5		52		56
	Foreign exchange rate changes			―		―		83		(84)		(2)		(9)
	Plan amendments			―		8		(7)		(31)		―		―
	Actuarial (gain) loss			179		2,022		882		318		31		228
	Medicare Part D Reimbursement			―		―		―		―		8		7
	Benefit payments			(726)		(680)		(278)		(221)		(156)		(155)
	Settlements, curtailments, special
		termination benefits and other		26		(2)		―		―		―		―
	Benefit obligation at end of year		$	14,830	$	14,499	$	6,414	$	5,332	$	2,205	$	2,108
Change in plan assets
	Fair value of plan assets at
		beginning of year	$	12,102	$	11,575	$	4,643	$	4,355	$	1,209	$	1,149
	Acquisitions			8		―		―		26		―		―
	Actual return on plan assets			1,645		972		463		272		149		94
	Company contributions			752		237		327		280		67		65
	Participant contributions			―		―		5		5		52		56
	Foreign exchange rate changes			―		―		62		(74)		―		―
	Benefit payments			(726)		(680)		(278)		(221)		(156)		(155)
	Settlements, curtailments, special
		termination benefits and other		―		(2)		―		―		―		―
	Fair value of plan assets at end of year		$	13,781	$	12,102	$	5,222	$	4,643	$	1,321	$	1,209
Funded status at end of year			$	(1,049)	$	(2,397)	$	(1,192)	$	(689)	$	(884)	$	(899)

			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
(Millions)			2012		2011		2012		2011		2012		2011
Amounts recognized in the
	Consolidated Balance Sheet as of
	Dec. 31,
	Non-current assets		$	―	$	―	$	16	$	40	$	―	$	―
	Accrued benefit cost
		Current liabilities		(43)		(41)		(8)		(8)		(4)		(4)
		Non-current liabilities		(1,006)		(2,356)		(1,200)		(721)		(880)		(895)
	Ending balance		$	(1,049)	$	(2,397)	$	(1,192)	$	(689)	$	(884)	$	(899)
Amounts recognized in accumulated
	other comprehensive income as of
	Dec. 31,
	Net transition obligation (asset)		$	―	$	―	$	(5)	$	(8)	$	―	$	―
	Net actuarial loss (gain)			4,679		5,623		2,458		1,858		1,028		1,171
	Prior service cost (credit)			24		30		(150)		(167)		(197)		(269)
	Ending balance		$	4,703	$	5,653	$	2,303	$	1,683	$	831	$	902

The balance of amounts recognized for international plans in accumulated other comprehensive income as of December 31 in the preceding table are presented based on the foreign currency exchange rate on that date.

The pension accumulated benefit obligation represents the actuarial present value of benefits based on employee service and compensation as of the measurement date and does not include an assumption about future compensation levels. The accumulated benefit obligation of the U.S. pension plans was $14.127 billion and $13.804 billion at December 31, 2012 and 2011, respectively. The accumulated benefit obligation of the international pension plans was $5.942billion and $4.889 billion at December 31, 2012 and 2011, respectively.

The following amounts relate to pension plans with accumulated benefit obligations in excess of plan assets as of December 31:

	Qualified and Non-qualified Pension Plans
	United States				International
(Millions)	2012		2011		2012		2011
Projected benefit obligation	$	505	$	14,499	$	5,122	$	2,983
Accumulated benefit obligation		492		13,804		4,808		2,740
Fair value of plan assets		8		12,102		4,038		2,321

Net periodic benefit cost is recorded in cost of sales, selling, general and administrative expenses, and research, development and related expenses. Components of net periodic benefit cost and other supplemental information for the years ended December 31 follow:

Components of net periodic cost and other amounts recognized in other comprehensive income
			Qualified and Non-qualified
			Pension Benefits												Postretirement
			United States						International						Benefits
(Millions)			2012		2011		2010		2012		2011		2010		2012		2011		2010
Net periodic benefit cost (benefit)
	Service cost		$	254	$	206	$	201	$	124	$	124	$	105	$	78	$	61	$	55
	Interest cost			587		626		638		247		261		241		86		92		88
	Expected return on plan assets			(992)		(927)		(929)		(295)		(289)		(278)		(84)		(77)		(83)
	Amortization of transition
		(asset) obligation		―		―		―		(1)		(2)		1		―		―		―
	Amortization of prior service
		cost (benefit)		5		11		13		(17)		(14)		(4)		(72)		(72)		(94)
	Amortization of net actuarial (gain)
		loss		470		334		221		122		116		84		108		102		85
Net periodic benefit cost (benefit)			$	324	$	250	$	144	$	180	$	196	$	149	$	116	$	106	$	51
Settlements, curtailments, special
	termination benefits and other			26		1		―		4		2		(22)		―		―		―
Net periodic benefit cost (benefit)
	after settlements, curtailments,
	special termination benefits
	and other		$	350	$	251	$	144	$	184	$	198	$	127	$	116	$	106	$	51
Other changes in plan assets and
	benefit obligations recognized in
	other comprehensive (income)
	loss
	Transition (asset) obligation		$	―	$	―	$	―	$	―	$	(2)	$	(1)	$	―	$	―	$	―
	Amortization of transition (asset)
		obligation		―		―		―		1		2		(1)		―		―		―
	Prior service cost (benefit)			―		8		―		(7)		(32)		(91)		―		―		69
	Amortization of prior service cost
		(benefit)		(5)		(11)		(13)		17		14		4		72		72		94
	Net actuarial (gain) loss			(470)		1,976		227		707		315		104		(33)		212		89
	Amortization of net actuarial (gain)
		loss		(470)		(334)		(221)		(122)		(116)		(84)		(108)		(102)		(85)
	Foreign currency			―		―		―		24		(17)		(19)		(1)		(2)		(1)
Total recognized in other
	comprehensive (income) loss		$	(945)	$	1,639	$	(7)	$	620	$	164	$	(88)	$	(70)	$	180	$	166
Total recognized in net periodic
	benefit cost (benefit) and other
	comprehensive (income) loss		$	(595)	$	1,890	$	137	$	804	$	362	$	39	$	46	$	286	$	217

The estimated amortization from accumulated other comprehensive income into net periodic benefit cost in 2012 follows:

Amounts expected to be amortized from accumulated other comprehensive income into net periodic benefit costs over the next fiscal year
	Qualified and Non-qualified Pension Benefits
							Postretirement
(Millions)	United States		International		Benefits
Amortization of transition (asset) obligation	$	―	$	(1)	$	―
Amortization of prior service cost (benefit)		5		(17)		(66)
Amortization of net actuarial (gain) loss		399		159		96
Total amortization expected over the next fiscal year	$	404	$	141	$	30

Other supplemental information for the years ended December 31 follows:

Weighted-average assumptions used to determine benefit obligations
		Qualified and Non-qualified Pension Benefits												Postretirement
		United States						International						Benefits
		2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate		4.14	%	4.15	%	5.23	%	3.78	%	4.58	%	5.04	%	4.00	%	4.04	%	5.09	%
Compensation rate
	increase	4.00	%	4.00	%	4.00	%	3.31	%	3.52	%	3.59	%	N/A		N/A		N/A

The Company is in the process of transitioning all current and future retirees to the savings account benefits-based plan announced in 2008. The contributions provided by the Company to the health savings accounts increase three percent per year.Therefore, the Company no longer has material exposure to health care cost inflation.

Weighted-average assumptions used to determine net cost for years ended
		Qualified and Non-qualified Pension Benefits												Postretirement
		United States						International						Benefits
		2012		2011		2010		2012		2011		2010		2012		2011		2010
Discount rate		4.15	%	5.23	%	5.77	%	4.58	%	5.04	%	5.30	%	4.04	%	5.09	%	5.62	%
Expected return
	on assets	8.25	%	8.50	%	8.50	%	6.38	%	6.58	%	6.90	%	7.30	%	7.38	%	7.30	%
Compensation rate
	increase	4.00	%	4.00	%	4.30	%	3.52	%	3.59	%	3.72	%	N/A		N/A		N/A

The Company determines the discount rate used to measure plan liabilities as of the December 31 measurement date for the pension and postretirement benefit plans, which is also the date used for the related annual measurement assumptions. The discount rate reflects the current rate at which the associated liabilities could be effectively settled at the end of the year. The Company sets its rate to reflect the yield of a portfolio of high quality, fixed-income debt instruments that would produce cash flows sufficient in timing and amount to settle projected future benefits. Using this methodology, the Company determined a discount rate of 4.14% for pension and 4.00% for postretirement benefits to be appropriate for its U.S. plans as of December 31, 2012, which is a decrease of 0.01 percentage points and 0.04 percentage points, respectively, from the rates used as of December 31, 2011. For the international pension and postretirement plans the discount rates also reflect the current rate at which the associated liabilities could be effectively settled at the end of the year. If the country has a deep market in corporate bonds the Company matches the expected cash flows from the plan either to a portfolio of bonds that generate sufficient cash flow or a notional yield curve generated from available bond information. In countries that do not have a deep market in corporate bonds, government bonds are considered with a risk premium to approximate corporate bond yields.

For the U.S. qualified pension plans, the Company's assumption for the expected return on plan assets was 8.25% in 2012. The Company is lowering the 2013 expected return on plan assets for its U.S. pension plan by 0.25percentage points to 8.00%. This will increase the 2013 expected pension expense by approximately $33 million. Projected returns are based primarily on broad, publicly traded equity and fixed-income indices and forward-looking estimates of active portfolio and investment management. As of December 31, 2012, the Company's 2013 expected long-term rate of return on U.S. plan assets is based on an asset allocation assumption of 30% global equities, with an expected long-term rate of return of 7.58%; 16% private equities, with an expected long-term rate of return of 12.58%; 33% fixed-income securities, with an expected long-term rate of return of 3.72%; 16% absolute return investments independent of traditional performance benchmarks, with an expected long term return of 6.43%; and 5% commodities, with an expected long-term rate of return of 6.08%. The Company expects additional positive return from active investment management. These assumptions result in an 8.00% expected rate of return on an annualized basis in 2013. The actual rate of return on plan assets in 2012 was 13.6%. In 2011 the plan earned a rate of return of 8.7% and in 2010 earned a return of 14.4%. The average annual actual return on the plan assets over the past 10 and 25 years has been 10.5% and 10.6%, respectively. Return on assets assumptions for international pension and other post-retirement benefit plans are calculated on a plan-by-plan basis using plan asset allocations and expected long-term rate of return assumptions.

During 2012, the Company contributed $1.079billion to its U.S. and international pension plans and $67 million to its postretirement plans. During 2011, the Company contributed $517 million to its U.S. and international pension plans and $65 million to its postretirement plans. In 2013, the Company expects to contribute an amount in the range of $400 million to $600million of cash to its U.S. and international retirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2013. Therefore, the amount of the anticipated discretionary contribution could vary significantly depending on the U.S. plans' funded status and the anticipated tax deductibility of the contribution. Future contributions will also depend on market conditions, interest rates and other factors.

Future Pension and Postretirement Benefit Payments
The following table provides the estimated pension and postretirement benefit payments that are payable from the plans to participants.
	Qualified and Non-qualified
	Pension Benefits				Postretirement
(Millions)	United States		International		Benefits
2013 Benefit Payments	$	760	$	211	$	113
2014 Benefit Payments		784		223		126
2015 Benefit Payments		808		236		138
2016 Benefit Payments		831		248		153
2017 Benefit Payments		854		256		154
Following five years		4,566		1,463		787

Plan Asset Management

3M's investment strategy for its pension and postretirement plans is to manage the funds on a going-concern basis. The primary goal of the funds is to meet the obligations as required. The secondary goal is to earn the highest rate of return possible, without jeopardizing its primary goal, and without subjecting the Company to an undue amount of contribution rate volatility. Fund returns are used to help finance present and future obligations to the extent possible within actuarially determined funding limits and tax-determined asset limits, thus reducing the level of contributions 3M must make. The investment strategy has used long duration cash and derivative instruments to offset a significant portion of the interest rate sensitivity of U.S. pension liabilities. In addition, credit risk is managed through mandates for public securities and maximum issuer limits that are established and monitored on a regular basis.

Normally, 3M does not buy or sell any of its own stock as a direct investment for its pension and other postretirement benefit funds. However, due to external investment management of the funds, the plans may indirectly buy, sell or hold 3M stock. The aggregate amount of the shares would not be considered to be material relative to the aggregate fund percentages.

The discussion that follows references the fair value measurements of certain assets in terms of levels 1, 2 and 3. See Note 12 for descriptions of these levels. While the company believes the valuation methods 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 estimate of fair value at the reporting date.

U.S. Pension Plans Assets

In order to achieve the investment objectives in the U.S. pension plans, the investment policy includes a target strategic asset allocation. The investment policy allows some tolerance around the target in recognition that market fluctuations and illiquidity of some investments may cause the allocation to a specific asset class to stray from the target allocation, potentially for long periods of time. Acceptable ranges have been designed to allow for deviation from long-term targets and to allow for the opportunity for tactical over- and under-weights. The portfolio will normally be rebalanced when the quarter-end asset allocation deviates from acceptable ranges. The allocation is reviewed regularly by the named fiduciary of the plans.

The fair values of the assets held by the U.S. pension plans by asset class are as follows:

			Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)			Level 1				Level 2				Level 3				Dec. 31,
Asset Class			2012		2011		2012		2011		2012		2011		2012		2011
Equities
	U.S. equities		$	1,662	$	1,186	$	11	$	14	$	5	$	5	$	1,678	$	1,205
	Non-U.S. equities			1,332		1,095		―		1		―		―		1,332		1,096
	Derivatives			―		―		5		(3)		―		―		5		(3)
	EAFE index funds			―		―		250		476		―		―		250		476
	Index funds			―		―		156		128		1		1		157		129
	Long/short equity			―		―		―		―		477		436		477		436
Total Equities			$	2,994	$	2,281	$	422	$	616	$	483	$	442	$	3,899	$	3,339
Fixed Income
	U.S. government securities		$	844	$	776	$	796	$	869	$	―	$	―	$	1,640	$	1,645
	Non-U.S. government
		securities		―		―		378		314		―		―		378		314
	Preferred and convertible
		securities		4		4		―		5		―		―		4		9
	U.S. corporate bonds			196		168		1,249		1,049		―		5		1,445		1,222
	Non-U.S. corporate bonds			―		―		286		244		―		―		286		244
	Asset-backed securities			―		―		21		23		―		―		21		23
	Collateralized mortgage
		obligations		―		―		43		137		―		―		43		137
	Private placements			―		―		164		125		2		69		166		194
	Derivative instruments			―		2		76		200		―		―		76		202
	Other			―		―		29		24		―		―		29		24
Total Fixed Income			$	1,044	$	950	$	3,042	$	2,990	$	2	$	74	$	4,088	$	4,014
Private Equity
	Buyouts		$	―	$	―	$	―	$	―	$	662	$	618	$	662	$	618
	Derivative instruments			―		―		―		―		(51)		―		(51)		―
	Direct investments			―		―		―		―		129		―		129		―
	Distressed debt			―		―		―		―		301		333		301		333
	Growth equity			7		1		―		―		84		27		91		28
	Mezzanine			―		―		―		―		82		90		82		90
	Real estate			―		―		―		―		136		148		136		148
	Secondary			―		―		―		―		166		181		166		181
	Venture capital			―		―		―		―		627		665		627		665
Total Private Equity			$	7	$	1	$	―	$	―	$	2,136	$	2,062	$	2,143	$	2,063
Absolute Return
	Hedge funds and hedge fund of
		funds	$	―	$	―	$	833	$	1,235	$	664	$	88	$	1,497	$	1,323
	Bank loan and other fixed
		income funds		―		―		―		―		201		432		201		432
Total Absolute Return			$	―	$	―	$	833	$	1,235	$	865	$	520	$	1,698	$	1,755
Commodities			$	―	$	―	$	102	$	435	$	107	$	105	$	209	$	540
Cash and Cash Equivalents			$	429	$	295	$	1,547	$	600	$	―	$	―	$	1,976	$	895
Total			$	4,474	$	3,527	$	5,946	$	5,876	$	3,593	$	3,203	$	14,013	$	12,606
Other items to reconcile to fair
	value of plan assets														$	(232)	$	(504)
Fair value of plan assets															$	13,781	$	12,102

Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded. Index funds, including Europe, Australasia, and Far East (EAFE) funds, are valued at the net asset value (NAV) as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities then divided by the number of units outstanding. Long/short equity interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value.

Fixed income includes derivative instruments such as credit default swaps, interest rate swaps and futures contracts that are used to help manage risks. U.S. government and government agency bonds and notes are valued at the closing price reported in the active market in which the individual security is traded. Corporate bonds and notes, asset backed securities and collateralized mortgage obligations are valued at either the yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks. Private placement funds are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value. Swaps and derivative instruments are valued by the custodian using closing market swap curves and market derived inputs.

The private equity portfolio is a diversified mix of partnership interestsincluding buyouts, derivative instruments, direct investments, distressed debt, growth equity, mezzanine, real estate and venture capital investments. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value.

Absolute return consists primarily of private partnership interests in hedge funds, hedge fund of funds and bank loan funds. Partnership interests are valued using the NAV as determined by the administrator or custodian of the fund. Hedge fund partnership interests, which have a redemption right and are past any lock-up redemption period, are classified as level 2. A hedge fund was restructured during 2012, extending the lock-up redemption period, and therefore was moved to level 3 during 2012.

Commodities consist of commodity-linked notes and commodity-linked derivative contracts designed to deliver investment returns similar to the Goldman Sachs Commodities Index (GSCI) or Dow Jones UBS Commodity index returns. Commodities are valued at closing prices determined by calculation agents for outstanding transactions.

Other items to reconcile to fair value of plan assets include the net of insurance receivables for WG Trading Company, interest receivables, amounts due for securities sold, amounts payable for securities purchased and interest payable.

The following table sets forth a summary of changes in the fair values of the U.S. pension plans' level 3 assets for the years ended December 31, 2012 and 2011:

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Commodities		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	506	$	144	$	2,075	$	623	$	111	$	3,459
Net transfers into / (out of) level 3			―		5		―		(59)		―		(54)
Purchases, sales, issuances, and
	settlements, net		(52)		(97)		(108)		3		―		(254)
Realized gain / (loss)			3		21		(50)		5		―		(21)
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(8)		(17)		133		(36)		―		72
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		(7)		18		12		(16)		(6)		1
Ending balance at Dec. 31, 2011			442		74		2,062		520		105		3,203
Net transfers into / (out of) level 3			―		(5)		―		472		―		467
Purchases, sales, issuances, and
	settlements, net		(1)		(73)		(108)		(225)		―		(407)
Realized gain / (loss)			―		25		120		76		―		221
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(1)		(19)		(3)		(49)		(1)		(73)
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		43		―		65		71		3		182
Ending balance at Dec. 31, 2012		$	483	$	2	$	2,136	$	865	$	107	$	3,593

International Pension Plans Assets

Outside the U.S., pension plan assets are typically managed by decentralized fiduciary committees. The disclosure below of asset categories is presented in aggregate for over 65 plans in 24 countries; however, there is significant variation in policy asset allocation from country to country. Local regulations, local funding rules, and local financial and tax considerations are part of the funding and investment allocation process in each country. 3M's Treasury group provides standard funding and investment guidance to all international plans with more focused guidance to the larger plans.

Each plan has its own strategic asset allocation. The asset allocations are reviewed periodically and rebalanced when necessary.

The fair values of the assets held by the international pension plans by asset class are as follows:

		Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)		Level 1				Level 2				Level 3				Dec. 31,
Asset Class		2012		2011		2012		2011		2012		2011		2012		2011
Equities
	Growth equities	$	628	$	374	$	133	$	141	$	―	$	―	$	761	$	515
	Value equities		468		401		23		98		―		―		491		499
	Core equities		88		227		376		430		5		5		469		662
Total Equities		$	1,184	$	1,002	$	532	$	669	$	5	$	5	$	1,721	$	1,676
Fixed Income
	Domestic government debt	$	297	$	188	$	694	$	579	$	―	$	6	$	991	$	773
	Foreign government debt		170		93		445		647		2		2		617		742
	Corporate debt securities		―		113		630		404		18		19		648		536
	Mortgage backed debt		―		―		31		25		―		―		31		25
	Other debt obligations		―		―		268		39		16		12		284		51
Total Fixed Income		$	467	$	394	$	2,068	$	1,694	$	36	$	39	$	2,571	$	2,127
Private Equity
	Private equity funds	$	―	$	―	$	―	$	47	$	22	$	20	$	22	$	67
	Real estate		3		3		42		38		49		47		94		88
Total Private Equity		$	3	$	3	$	42	$	85	$	71	$	67	$	116	$	155
Absolute Return
	Hedge funds	$	―	$	―	$	75	$	172	$	50	$	―	$	125	$	172
	Insurance		―		―		―		―		433		369		433		369
	Derivatives		―		―		20		58		―		―		20		58
	Other		―		―		24		2		2		1		26		3
Total Absolute Return		$	―	$	―	$	119	$	232	$	485	$	370	$	604	$	602
Cash and Cash Equivalents		$	211	$	106	$	21	$	2	$	―	$	―	$	232	$	108
Total		$	1,865	$	1,505	$	2,782	$	2,682	$	597	$	481	$	5,244	$	4,668
Other items to reconcile to fair
	value of plan assets													$	(22)	$	(25)
Fair value of plan assets														$	5,222	$	4,643

Equities consist primarily of mandates in public equity securities managed to the Morgan Stanley Capital All Country World Index. Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded.

Fixed Income investments include domestic and foreign government, corporate, mortgage backed and other debt. Governments, corporate bonds and notes and mortgage backed securities are valued at the closing price reported if traded on an active market or at yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks.

Private equity funds consist of both active and passive mandates. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value. Real estate consists of property funds and REITS (Real Estate Investment Trusts). Property funds are valued using the most recent partnership statement of fair value, updated for any subsequent partnership interests' cash flows. REITS are valued at the closing price reported in the active market in which it is traded.

Absolute return consists of private partnership interests in hedge funds, insurance contracts, derivative instruments, hedge fund of funds, and bank loan funds. Insurance consists of insurance contracts, which are valued using cash surrender values which is the amount the plan would receive if the contract was cashed out at year end. Derivative instruments consist of interest rate swaps that are used to help manage risks. Hedge funds are valued at the NAV as determined by the independent administrator or custodian of the fund.

Other items to reconcile to fair value of plan assets include the net of interest receivables, amounts due for securities sold, amounts payable for securities purchased and interest payable.

The following table sets forth a summary of changes in the fair values of the international pension plans' level 3 assets for the years ended December 31, 2012 and 2011:

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	98	$	34	$	70	$	344	$	546
Net transfers into / (out of) level 3			(93)		―		(21)		18		(96)
Foreign currency exchange			―		(1)		(1)		(10)		(12)
Purchases, sales, issuances, and
	settlements, net		―		―		17		3		20
Realized gain / (loss)			―		―		―		1		1
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		6		2		14		22
Ending balance at Dec. 31, 2011			5		39		67		370		481
Net transfers into / (out of) level 3			―		―		―		―		―
Foreign currency exchange			―		2		(4)		2		―
Purchases, sales, issuances, and
	settlements, net		―		(2)		11		92		101
Realized gain / (loss)			―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		―		―		―		―
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		(3)		(3)		21		15
Ending balance at Dec. 31, 2012		$	5	$	36	$	71	$	485	$	597

Postretirement Benefit Plans Assets

In order to achieve the investment objectives in the U.S. postretirement plan, the investment policy includes a target strategic asset allocation. The investment policy allows some tolerance around the target in recognition that market fluctuations and illiquidity of some investments may cause the allocation to a specific asset class to stray from the target allocation, potentially for long periods of time. Acceptable ranges have been designed to allow for deviation from long-term targets and to allow for the opportunity for tactical over- and under-weights. The portfolio will normally be rebalanced when the quarter-end asset allocation deviates from acceptable ranges. The allocation is reviewed regularly by the named fiduciary of the plan.

The fair values of the assets held by the postretirement benefit plans by asset class are as follows:

			Fair Value Measurements Using Inputs Considered as												Fair Value at
(Millions)			Level 1				Level 2				Level 3				Dec. 31,
Asset Class			2012		2011		2012		2011		2012		2011		2012		2011
Equities
	U.S. equities		$	466	$	396	$	―	$	―	$	―	$	―	$	466	$	396
	Non-U.S. equities			54		44		―		―		―		―		54		44
	EAFE index funds			―		―		8		15		―		―		8		15
	Index funds			―		―		42		43		―		―		42		43
	Long/short equity			―		―		―		―		16		14		16		14
Total Equities			$	520	$	440	$	50	$	58	$	16	$	14	$	586	$	512
Fixed Income
	U.S. government securities		$	63	$	55	$	217	$	197	$	―	$	―	$	280	$	252
	Non-U.S. government
		securities		―		―		16		12		―		―		16		12
	U.S. corporate bonds			6		6		68		62		―		―		74		68
	Non-U.S. corporate bonds			―		―		16		14		―		―		16		14
	Asset-backed securities			―		―		6		5		―		―		6		5
	Collateralized mortgage
		obligations		―		―		4		7		―		―		4		7
	Private placements			―		―		11		9		―		2		11		11
	Derivative instruments			―		―		2		7		―		―		2		7
	Other			―		―		1		1		―		―		1		1
Total Fixed Income			$	69	$	61	$	341	$	314	$	―	$	2	$	410	$	377
Private Equity
	Buyouts		$	―	$	―	$	―	$	―	$	51	$	56	$	51	$	56
	Derivative instruments			―		―		―		―		(2)		―		(2)		―
	Direct investments			―		―		―		―		4		―		4		―
	Distressed debt			―		―		―		―		11		17		11		17
	Growth equity			―		―		―		―		3		1		3		1
	Mezzanine			―		―		―		―		3		3		3		3
	Real estate			―		―		―		―		4		4		4		4
	Secondary			―		―		―		―		5		6		5		6
	Venture capital			―		―		―		―		91		100		91		100
Total Private Equity			$	―	$	―	$	―	$	―	$	170	$	187	$	170	$	187
Absolute Return
	Hedge funds and hedge fund of
		funds	$	―	$	―	$	27	$	40	$	21	$	3	$	48	$	43
	Bank loan and other fixed
		income funds		―		―		―		―		7		14		7		14
Total Absolute Return			$	―	$	―	$	27	$	40	$	28	$	17	$	55	$	57
Commodities			$	―	$	―	$	3	$	14	$	4	$	4	$	7	$	18
Cash and Cash Equivalents			$	51	$	10	$	50	$	51	$	―	$	―	$	101	$	61
Total			$	640	$	511	$	471	$	477	$	218	$	224	$	1,329	$	1,212
Other items to reconcile to fair
	value of plan assets														$	(8)	$	(3)
Fair value of plan assets															$	1,321	$	1,209

Publicly traded equities are valued at the closing price reported in the active market in which the individual securities are traded. Index funds are valued at the NAV as determined by the custodian of the fund. The NAV is based on the fair value of the underlying assets owned by the fund, minus its liabilities then divided by the number of units outstanding. Long/short equity interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value.

Fixed income includes derivative investments such as credit default swaps, interest rate swaps and futures contracts that are used to help manage risks. U.S. government and government agency bonds and notes are valued at the closing price reported in the active market in which the individual security is traded. Corporate bonds and notes, asset backed securities and collateralized mortgage obligations are valued at either the yields currently available on comparable securities of issuers with similar credit ratings or valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable such as credit and liquidity risks. Swaps and derivative instruments are valued by the custodian using market swap curves and market derived inputs.

The private equity portfolio is a diversified mix of partnership interests including buyouts, derivative instruments, direct investments, distressed debt, growth equity, mezzanine, real estate and venture capital investments. Partnership interests are valued using the most recent general partner statement of fair value, updated for any subsequent partnership interests' cash flows or expected changes in fair value.

Absolute return primarily consists of private partnership interests in hedge funds, hedge fund of funds and bank loan funds. Partnership interests are valued using the NAV as determined by the independent administrator or custodian of the fund.

Commodities consist of commodity-linked notes and commodity-linked derivative contracts designed to deliver investment returns similar to the GSCI or Dow Jones UBS Commodity index returns. Commodities are valued at closing prices determined by calculation agents for outstanding transactions.

Other items to reconcile to fair value of plan assets include the net of interest receivables, amounts due for securities sold, foreign currency fluctuations, amounts payable for securities purchased and interest payable.

The following table sets forth a summary of changes in the fair values of the postretirement plans' level 3 assets for the years ended December 31, 2012 and 2011:

		Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
		Equities		Fixed Income		Private Equity		Absolute Return		Commodities		Total
(Millions)
Beginning balance at Jan. 1, 2011		$	16	$	4	$	226	$	20	$	3	$	269
Net transfers into / (out of) level 3			―		―		―		(2)		―		(2)
Purchases, sales, issuances, and
	settlements, net		(1)		(3)		(43)		1		―		(46)
Realized gain / (loss)			―		1		(31)		―		―		(30)
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		(1)		(1)		20		(1)		―		17
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		―		1		15		(1)		1		16
Ending balance at Dec. 31, 2011			14		2		187		17		4		224
Net transfers into / (out of) level 3			―		―		―		15		―		15
Purchases, sales, issuances, and
	settlements, net		―		(2)		(27)		(7)		―		(36)
Realized gain / (loss)			―		1		11		2		―		14
Change in unrealized gains / (losses)
	relating to instruments sold during
	the period		―		(1)		(4)		(1)		―		(6)
Change in unrealized gains / (losses)
	relating to instruments still held at
	the reporting date		2		―		3		2		―		7
Ending balance at Dec. 31, 2012		$	16	$	―	$	170	$	28	$	4	$	218

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Derivatives (Details 7) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	$ 106	$ 49
Net Amount of Derivative Liabilities	81	35
Derivatives Subject to Master Netting Agreements
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	106	43
Gross Amount of Elgible Offsetting Recognized Derivative Assets	25	14
Cash Collateral Pledged	0	0
Net Amount of Derivative Liabilities	81	29
Derivatives Not Subject to Master Netting Agreements
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	6
Net Amount of Derivative Liabilities	$ 0	$ 6

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Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information

Supplemental Cash Flow Information

NOTE 6. Supplemental Cash Flow Information

(Millions)	2012		2011		2010
Cash income tax payments, net of refunds	$	1,717	$	1,542	$	1,509
Cash interest payments		166		219		178
Capitalized interest		23		19		17

Cash interest payments include interest paid on debt and capital lease balances, including net interest payments/receipts related to accreted debt discounts/premiums, as well as net interest payments/receipts associated with interest rate swap contracts.

Individual amounts in the Consolidated Statement of Cash Flows exclude the impacts of acquisitions, divestitures and exchange rate impacts, which are presented separately.

Transactions related to investing and financing activities with significant non-cash components are as follows:

• During 2010, Sumitomo 3M purchased a portion of its shares held by its noncontrolling interest, Sumitomo Electric Industries, Ltd. (SEI), by paying cash of 5.8 billion Japanese Yen and entering into a note payable to SEI of 17.4 billion Japanese Yen. The cash paid as a result of the purchase of Sumitomo 3M shares from SEI was classified as other financing activity in the consolidated statement of cash flows. The remainder of the purchase financed by the note payable to SEI was considered non-cash financing activity in the first quarter of 2010. This is described in Note 5 in the section entitled “Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interests Involving Non-Wholly Owned Subsidiaries”.
• Also in 2010, as discussed in Note 2, the Company recorded a financed liability of 1.7 billion Japanese Yen related to the A-One acquisition.

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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Before Income Taxes
United States	$ 2,902	$ 2,516	$ 2,778
International	3,449	3,515	2,977
Income before income taxes	$ 6,351	$ 6,031	$ 5,755

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Supplemental Balance Sheet Information

12 Months Ended

Dec. 31, 2012

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

NOTE 4. Supplemental Balance Sheet Information

Accounts payable (included as a separate line item in the Consolidated Balance Sheet) includes drafts payable on demand of $74 million at December 31, 2012, and $82 million at December 31, 2011. Accumulated depreciation for capital leases totaled $73 million and $60 million as of December 31, 2012, and 2011, respectively. Additional supplemental balance sheet information is provided in the table that follows.

(Millions)		2012		2011
Other current assets
Prepaid expenses and other		$	555	$	676
Deferred income taxes			472		385
Derivative assets-current			49		107
Product and other insurance receivables			125		109
	Total other current assets	$	1,201	$	1,277
Investments
Equity method		$	105	$	98
Cost method			47		47
Other investments			11		10
	Total investments	$	163	$	155
Property, plant and equipment - at cost
Land		$	413	$	377
Buildings and leasehold improvements			6,975		6,587
Machinery and equipment			14,190		13,240
Construction in progress			791		814
Capital leases			156		148
Gross property, plant and equipment			22,525		21,166
Accumulated depreciation			(14,147)		(13,500)
	Property, plant and equipment - net	$	8,378	$	7,666
Other assets
Deferred income taxes		$	578	$	1,018
Product and other insurance receivables			139		151
Cash surrender value of life insurance policies			230		223
Other assets			270		264
	Total other assets	$	1,217	$	1,656
Other current liabilities
Accrued trade payables		$	516	$	516
Deferred income			471		389
Derivative liabilities			106		49
Restructuring actions			31		6
Employee benefits and withholdings			178		160
Product and other claims			147		159
Property and other taxes			87		94
Pension and postretirement benefits			55		53
Deferred income taxes			45		23
Other			645		636
	Total other current liabilities	$	2,281	$	2,085
Other liabilities
Long term income taxes payable		$	454	$	595
Employee benefits			332		351
Product and other claims			314		329
Capital lease obligations			71		79
Deferred income			29		19
Deferred income taxes			167		251
Other			267		233
	Total other liabilities	$	1,634	$	1,857

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Supplemental Equity and Comprehensive Income Information

12 Months Ended

Dec. 31, 2012

Supplemental Equity and Comprehensive Income Information

Supplemental Equity and Comprehensive Income Information

NOTE 5. Supplemental Equity and Comprehensive Income Information

Common stock ($.01 par value per share) of 3.0 billion shares is authorized, with 944,033,056 shares issued. Treasury stock is reported at cost, with 256,941,406 shares at December 31, 2012, 249,063,015 shares at December 31, 2011, and 232,055,448 shares at December 31, 2010. Preferred stock, without par value, of 10 million shares is authorized but unissued.

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component
(Millions)		Cumulative Translation Adjustment		Defined Benefit Pension and Postretirement Plans Adjustment		Debt and Equity Securities, Unrealized Gain (Loss)		Cash Flow Hedging Instruments, Unrealized Gain (Loss)		Total Accumulated Other Comprehen-sive Income (Loss)
Balance at December 31, 2009, net of tax		$	122	$	(3,831)	$	(9)	$	(36)	$	(3,754)
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		213		(374)		5		(9)		(165)
	Amounts reclassified out		―		306		―		15		321
Total other comprehensive income (loss),
	before tax		213		(68)		5		6		156
Tax effect			(8)		28		(2)		(2)		16
Total other comprehensive income (loss),
	net of tax		205		(40)		3		4		172
Purchase of subsidiary shares, net of tax			47		(8)		―		―		39
Balance at December 31, 2010, net of tax		$	374	$	(3,879)	$	(6)	$	(32)	$	(3,543)

Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		(253)		(2,452)		(10)		(50)		(2,765)
	Amounts reclassified out		―		475		10		134		619
Total other comprehensive income (loss),
	before tax		(253)		(1,977)		―		84		(2,146)
Tax effect			(7)		701		―		(30)		664
Total other comprehensive income (loss),
	net of tax		(260)		(1,276)		―		54		(1,482)
Balance at December 31, 2011, net of tax		$	114	$	(5,155)	$	(6)	$	22	$	(5,025)

Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications		133		(204)		6		(10)		(75)
	Amounts reclassified out		―		615		―		(59)		556
Total other comprehensive income (loss),
	before tax		133		411		6		(69)		481
Tax effect			(17)		(211)		(2)		24		(206)
Total other comprehensive income (loss),
	net of tax		116		200		4		(45)		275
Balance at December 31, 2012, net of tax		$	230	$	(4,955)	$	(2)	$	(23)	$	(4,750)

Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation does include impacts from items such as net investment hedge transactions. Reclassification adjustments are made to avoid double counting in comprehensive income items that are also recorded as part of net income.

Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
			Amount Reclassified from
(Millions)			Accumulated Other Comprehensive Income					Location on Income Statement
Details about Accumulated Other Comprehensive Income Components		Year ended December 31, 2012		Year ended December 31, 2011		Year ended December 31, 2010
Gains (losses) associated with, defined benefit pension and postretirement plans amortization
	Transition asset	$	1	$	2	$	(1)	See Note 10
	Prior service benefit		84		75		85	See Note 10
	Net actuarial loss		(700)		(552)		(390)	See Note 10
Total before tax			(615)		(475)		(306)
Tax effect			219		168		109	Provision for income taxes
Net of tax		$	(396)	$	(307)	$	(197)
Debt and equity security gains (losses)
	Sales or impairments of securities	$	―	$	(10)	$	―	Selling, general and administrative expenses
Total before tax			―		(10)		―
Tax effect			―		4		―	Provision for income taxes
Net of tax		$	―	$	(6)	$	―
Cash flow hedging instruments gains (losses)
	Foreign currency forward/option contracts	$	41	$	(87)	$	(39)	Cost of sales
	Foreign currency forward contracts		29		(41)		33	Interest expense
	Commodity price swap contracts		(10)		(6)		(9)	Cost of sales
	Interest rate swap contracts		(1)		―		―	Interest expense
Total before tax			59		(134)		(15)
Tax effect			(21)		48		6	Provision for income taxes
Net of tax		$	38	$	(86)	$	(9)
Total reclassifications for the period, net of tax		$	(358)	$	(399)	$	(206)

Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interests Involving Non-Wholly Owned Subsidiaries

As discussed in Note 2, in early March 2011, 3M acquired a controlling interest in Winterthur Technologie AG (Winterthur), making Winterthur a consolidated subsidiary as of that business acquisition date. Subsequent to this business acquisition date, 3M purchased additional outstanding shares of its Winterthur subsidiary increasing 3M's ownership interest from approximately 86 percent as of the business acquisition date to 100 percent as of December 31, 2011. The $57 million of cash paid in 2011 as a result of these additional purchases of Winterthur shares was classified as other financing activity in the consolidated statement of cash flows. These additional purchases did not result in a material transfer from noncontrolling interest to 3M Company shareholders' equity. In addition, during 2011, 3M sold a noncontrolling interest in a newly formed subsidiary for an immaterial amount, which was also classified as other financing activity in the consolidated statement of cash flows.

During the second half of 2009 and the first half of 2010, 3M effected a purchase of subsidiary shares and transfers of ownership interests to align activities in Japan and to simplify the Company's ownership structure. As a result of these activities, beginning in June 2010 the Company has a wholly owned subsidiary in the region in addition to its majority owned Sumitomo 3M Limited entity (Sumitomo 3M). Because the Company retained its controlling interest in the subsidiaries involved, these activities resulted in changes to 3M Company shareholders' equity and noncontrolling interest. These activities included the following:

• During the second half of 2009, a wholly owned subsidiary that, in turn, owned a portion of the Company's majority owned Sumitomo 3M, was transferred to another subsidiary (referred to herein as 3M HC) that was majority, rather than wholly, owned. Sumitomo 3M also owned a portion of 3M HC. As a result of the transaction, 3M's effective ownership in Sumitomo 3M was reduced from 75 percent to 71.5 percent. The transfer resulted in a decrease in 3M Company shareholders' equity and an increase in noncontrolling interest of $81 million in the second half of 2009.
• During the first quarter of 2010, majority owned 3M HC which, as a result of the transfer above owned a portion of the Company's majority owned Sumitomo 3M, transferred this interest to Sumitomo 3M. In addition, Sumitomo 3M purchased a portion of its shares held by its noncontrolling interest, Sumitomo Electric Industries, Ltd. (SEI), by paying cash of 5.8 billion Japanese Yen and entering into a note payable to SEI of 17.4 billion Japanese Yen (approximately $63 million and $188 million, respectively, based on applicable exchange rates at that time). As a result of these transactions, 3M's effective ownership in Sumitomo 3M was increased from 71.5 percent to 75 percent. The cash paid as a result of the purchase of Sumitomo 3M shares from SEI was classified as other financing activity in the consolidated statement of cash flows. The remainder of the purchase financed by the note payable to SEI was considered non-cash financing activity in the first quarter of 2010. These transactions resulted in an increase in 3M Company shareholders' equity of $22 million and a decrease in noncontrolling interest of $278 million in the first quarter of 2010.
• During the second quarter of 2010, majority owned Sumitomo 3M transferred its interest in 3M HC to 3M HC. As a result of this transaction, 3M HC became wholly owned by the Company. The transfer resulted in an increase in 3M Company shareholders' equity and a decrease in noncontrolling interest of $24 million in the second quarter of 2010.

3M also acquired the remaining noncontrolling interest of a previously majority owned subsidiary for an immaterial amount during the first half of 2010. In addition, as discussed in Note 2, in October 2010 3M acquired a controlling interest in Cogent Inc. via a tender offer and in December 2010 completed a second-step merger for the same amount per outstanding share as the tender offer, thereby acquiring the remaining noncontrolling interest in Cogent Inc. The resulting October 2010 increase and December 2010 decrease in noncontrolling interest associated with the Cogent Inc. transactions are presented netting to zero with respect to the amount impacting noncontrolling interest in the consolidated statement of changes in equity. However, the December 2010 transaction resulted in an immaterial transfer from noncontrolling interest to 3M Company shareholders' equity.

The following table summarizes the effects of the 2010 transactions on equity attributable to 3M Company shareholders.

(Millions)		2010
Net income attributable to 3M		$	4,085
Transfers from noncontrolling interest			43
Change in 3M Company shareholders’ equity from net income attributable to 3M and
	transfers from noncontrolling interest	$	4,128

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Income Taxes

12 Months Ended

Dec. 31, 2012

Income Taxes

Income Taxes

NOTE 7. Income Taxes

Income Before Income Taxes
(Millions)		2012		2011		2010
United States		$	2,902	$	2,516	$	2,778
International			3,449		3,515		2,977
	Total	$	6,351	$	6,031	$	5,755

Provision for Income Taxes
(Millions)			2012		2011		2010
Currently payable
	Federal		$	743	$	431	$	837
	State			75		51		73
	International			918		861		796
Deferred
	Federal			(3)		181		55
	State			10		12		43
	International			97		138		(212)
		Total	$	1,840	$	1,674	$	1,592

Components of Deferred Tax Assets and Liabilities
(Millions)			2012		2011
Deferred tax assets:
	Accruals not currently deductible
		Employee benefit costs	$	115	$	96
		Product and other claims		161		155
		Miscellaneous accruals		137		133
	Pension costs			969		1,183
	Stock-based compensation			415		483
	Net operating/capital loss carryforwards			304		392
	Foreign tax credits			285		286
	Inventory			189		174
	Other - net			18		―
Gross deferred tax assets				2,593		2,902
Valuation allowance				(29)		(82)
Total deferred tax assets			$	2,564	$	2,820
Deferred tax liabilities:
	Product and other insurance receivables		$	(60)	$	(63)
	Accelerated depreciation			(858)		(745)
	Intangible amortization			(808)		(799)
	Other			―		(84)
Total deferred tax liabilities			$	(1,726)	$	(1,691)
Net deferred tax assets			$	838	$	1,129

The net deferred tax assets are included as components of Other Current Assets, Other Assets, Other Current Liabilities, and Other Liabilities within the Consolidated Balance Sheet. See Note 4 “Supplemental Balance Sheet Information” for further details.

As of December 31, 2012, the Company had tax effected federal, state, and international operating loss, capital loss, and tax credit carryovers of approximately $43 million, $11 million, and $250 million (before valuation allowances), respectively. The federal tax attribute carryovers will expire after seventeen to nineteen years, the state after five to ten years, and the majority of international after seven years with the remaining international expiring in one year or with an indefinite carryover period. The tax attributes being carried over arise as certain jurisdictions may have tax losses or may have inabilities to utilize certain losses without the same type of taxable income. The Company has provided $29 million of valuation allowance against certain of these deferred tax assets based on management's determination that it is more-likely-than-not that the tax benefits related to these assets will not be realized. The valuation allowance was reduced in 2012 due to the closure of audits with certain taxing authorities.

During 2012, the Company contributed $1.079billion to its U.S. and international pension plans and $67 million to its postretirement plans. During 2011, the Company contributed $517 million to its U.S. and international pension plans and $65 million to its postretirement plans. During 2010, the Company contributed $556 million to its U.S. and international pension plans and $62 million to its postretirement plans. The current income tax provision includes a benefit for the pension contributions; the deferred tax provision includes a cost for the related temporary difference.

Reconciliation of Effective Income Tax Rate
		2012		2011		2010
Statutory U.S. tax rate		35.0	%	35.0	%	35.0	%
State income taxes - net of federal benefit		0.9		0.7		1.2
International income taxes - net		(4.2)		(4.6)		(7.1)
U.S. research and development credit		―		(0.5)		(0.2)
Reserves for tax contingencies		(1.9)		(1.2)		(0.5)
Medicare Modernization Act, one-time charge		―		―		1.5
Domestic Manufacturer's deduction		(1.2)		(1.5)		(1.4)
All other - net		0.4		(0.1)		(0.8)
	Effective worldwide tax rate	29.0	%	27.8	%	27.7	%

The effective tax rate for 2012 was 29.0 percent, compared to 27.8 percent in 2011, an increase of 1.2 percentage points. Various factors increased or decreased the effective tax rate when compared to the same periods last year. The primary factors that increased the Company's effective tax rate year-on-year include international taxes, specifically with respect to the corporate reorganization of a wholly owned international subsidiary (which benefited 2011), state income taxes, lower domestic manufacturer's deduction, and the lapse of the U.S. research and development credit. These and other factors, when compared to 2011, increased the 2012 effective tax rate by 2.1 percentage points. Factors that decreased the Company's effective tax rate year-on-year include international taxes as a result of changes to the geographic mix of income before taxes and adjustments to its income tax reserves. These factors, when compared to last year, decreased the effective tax rate 0.9 percentage points.

On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law. Included in this Act was the extension of the research and development credit for years 2012 and 2013. As this Act was enacted during 2013, the impacts of this law are not included in the 2012 financial results. The Company anticipates a beneficial impact on the effective tax rate in 2013 for both the 2012 and 2013 research and development credit.

The effective tax rate for 2011 was 27.8 percent, compared to 27.7 percent in 2010, an increase of 0.1 percentage points. The year-on-year change in international income taxes increased the effective tax rate for 2011 when compared to 2010 by approximately 2.5 percentage points, which includes a partial offsetting benefit from the corporate reorganization of a wholly owned international subsidiary in 2011. This 2.5 percentage point net increase was due primarily to certain 2010 tax benefits, which did not repeat in 2011, related to net operating losses partially offset by a valuation allowance resulting from the 2010 corporate alignment transactions that allowed the Company to increase its ownership of a foreign subsidiary. These transactions are described in the section of Note 5 entitled "Purchase and Sale of Subsidiary Shares and Transfers of Ownership Interest Involving Non-Wholly Owned Subsidiaries". Other significant items impacting the year-on-year comparison include a one-time 2010 income tax charge of $84 million (discussed further below), which benefited the 2011 tax rate when compared to 2010 by 1.5 percentage points, as this charge did not repeat in 2011. The Company's effective tax rate also benefited during 2011 when compared to 2010 by approximately 0.7 percentage points from adjustments to its income tax reserves.

Under a Federal program (Medicare Modernization Act) that was established to encourage companies to provide retiree prescription drug coverage, many companies, including 3M, received a tax-advantaged subsidy. The tax advantage of the subsidy was eliminated by the Patient Protection and Affordable Care Act (H.R. 3590), including modifications included in the Health Care and Education Reconciliation Act of 2010 (collectively, the "Act'), which were enacted in March 2010. Although the elimination of this tax advantage does not take effect until 2013 under the Act, 3M was required to recognize the full accounting impact in its financial statements in the period in which the Act was enacted. Because future anticipated retiree health care liabilities and related tax subsidies are already reflected in 3M's financial statements, the change in law resulted in a reduction of the value of the company's deferred tax asset related to the subsidy. This reduction in value resulted in a one-time non-cash income tax charge to 3M's earnings in 2010 of approximately $84 million, or 12 cents per diluted share.

The Company files income tax returns in the U.S. federal jurisdiction, and various states and foreign jurisdictions. With few exceptions, the Company is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2004.

The IRS completed its field examination of the Company's U.S. federal income tax returns for the years 2005 through 2007 in the fourth quarter of 2009. The Company protested certain IRS positions within these tax years and entered into the administrative appeals process with the IRS during the first quarter of 2010. During the first quarter of 2010, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2008 year. The Company protested certain IRS positions for 2008 and entered into the administrative appeals process with the IRS during the second quarter of 2010. During the first quarter of 2011, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2009 year. The Company protested certain IRS positions for 2009 and entered into the administrative appeals process with the IRS during the second quarter of 2011. During the first quarter of 2012, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2010 year. The Company protested certain IRS positions for 2010 and entered into the administrative appeals process with the IRS during the second quarter of 2012. In December 2012, the Company received a statutory notice of deficiency for the 2006 year. The Company intends to file a petition in Tax Court in the first quarter of 2013.

Currently, the Company is under examination by the IRS for its U.S. federal income tax returns for the years 2011, 2012, and 2013. It is anticipated that the IRS will complete its examination of the Company for 2011 by the end of the second quarter of 2013, for 2012 by the end of the first quarter of 2014, and for 2013 by the end of the first quarter of 2015. As of December 31, 2012, the IRS has not proposed any significant adjustments to the Company's tax positions for which the Company is not adequately reserved.

During the first quarter of 2010, the Company paid the agreed upon assessments for the 2005 tax year. During the second quarter of 2010, the Company paid the agreed upon assessments for the 2008 tax year. During the second quarter of 2011, the Company received a refund from the IRS for the 2004 tax year. During the first quarter of 2012, the Company paid the agreed upon assessments for the 2010 tax year. Payments relating to other proposed assessments arising from the 2005 through 2013 examinations may not be made until a final agreement is reached between the Company and the IRS on such assessments or upon a final resolution resulting from the administrative appeals process or judicial action. In addition to the U.S. federal examination, there is also limited audit activity in several U.S. state and foreign jurisdictions.

3M anticipates changes to the Company's uncertain tax positions due to the closing of various audit years mentioned above. Currently, the Company is not able to reasonably estimate the amount by which the liability for unrecognized tax benefits will increase or decrease during the next 12 months as a result of the ongoing income tax authority examinations.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (UTB) is as follows:

Federal, State and Foreign Tax
(Millions)	2012		2011		2010
Gross UTB Balance at January 1	$	594	$	622	$	618
Additions based on tax positions related to the current year		80		92		128
Additions for tax positions of prior years		114		69		142
Reductions for tax positions of prior years		(120)		(123)		(161)
Settlements		(50)		9		(51)
Reductions due to lapse of applicable statute of limitations		(90)		(75)		(54)
Gross UTB Balance at December 31	$	528	$	594	$	622
Net UTB impacting the effective tax rate at December 31	$	185	$	295	$	394

The total amount of UTB, if recognized, would affect the effective tax rate by $185 million as of December 31, 2012, $295 million as of December 31, 2011, and $394 million as of December 31, 2010. The ending net UTB results from adjusting the gross balance for items such as Federal, State, and non-U.S. deferred items, interest and penalties, and deductible taxes. The net UTB is included as components of Other Current Assets, Other Assets, Accrued Income Taxes, and Other Liabilities within the Consolidated Balance Sheet.

The Company recognizes interest and penalties accrued related to unrecognized tax benefits in tax expense. The Company recognized in the consolidated statement of income on a gross basis approximately $12 million, $1 million, and $9 million of benefit in 2012, 2011, and 2010, respectively. At December 31, 2012 and December 31, 2011, accrued interest and penalties in the consolidated balance sheet on a gross basis were $44 million and $56 million, respectively. Included in these interest and penalty amounts are interest and penalties related to tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. Because of the impact of deferred tax accounting, other than interest and penalties, the disallowance of the shorter deductibility period would not affect the annual effective tax rate but would accelerate the payment of cash to the taxing authority to an earlier period.

As a result of certain employment commitments and capital investments made by 3M, income from manufacturing activities in China, Taiwan, Korea, Brazil, and Singapore is subject to reduced tax rates or, in some cases, is exempt from tax for years through 2013, 2016, 2018, 2023, and 2023, respectively. The income tax benefits attributable to the tax status of these subsidiaries are estimated to be $64 million (9 cents per diluted share) in 2012, $77 million (11 cents per diluted share) in 2011, and $69 million (10 cents per diluted share) in 2010.

The Company has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. These earnings relate to ongoing operations and were approximately $8.6 billion as of December 31, 2012. Because of the availability of U.S. foreign tax credits, it is not practicable to determine the income tax liability that would be payable if such earnings were not indefinitely reinvested.

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Income Taxes (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Company contributions	$ 1,079	$ 517	$ 556
United States Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Company contributions	752	237	290
International Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Company contributions	327	280	266
Postretirement Benefits
Benefit Plan Information
Company contributions	$ 67	$ 65	$ 62

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Derivatives (Details 8)	12 Months Ended
	Dec. 31, 2012 CounterParties
Derivatives
Number of primary derivative counterparties	8
Number of master netting agreements supported by primary counterparty's parent guarantee	1
Number of primary derivaties counterparties that 3M has credit support agreements with primary counterparties parent.	6

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Marketable Securities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Marketable Securities
Gross unrealized losses on marketable securities (pre-tax)	$ 6	$ 12
Gross unrealized gains on marketable securities (pre-tax)	3	3
Percentage of interests in auction rate securities to portfolio, maximum (as a percent)	1.00%
Estimated fair value of auction-rate securities	7	4
Gross unrealized losses (pre-tax) within accumulated other comprehensive income related to auction rate securities	6	9
Minimum period that auction rate securities have been in a loss position	12 months
Pre-determined intervals during which liquidity for auction rate securities is typically provided 1	7 days
Pre-determined intervals during which liquidity for auction rate securities is typically provided 2	28 days
Pre-determined intervals during which liquidity for auction rate securities is typically provided 3	35 days
Pre-determined intervals during which liquidity for auction rate securities is typically provided 4	90 days
Estimated fair value of current plus long term asset backed securities	$ 1,228

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Income Taxes (Details 4) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of Effective Income Tax Rate
Statutory U.S. tax rate	35.00%	35.00%	35.00%
State income taxes--net of federal benefit	0.90%	0.70%	1.20%
International income taxes - net	(4.20%)	(4.60%)	(7.10%)
U.S. research and development credit	0.00%	(0.50%)	(0.20%)
Reserves for tax contingencies	(1.90%)	(1.20%)	(0.50%)
Medicare Modernization Act, one-time charge	0.00%	0.00%	1.50%
Domestic Manufacturer's deduction	(1.20%)	(1.50%)	(1.40%)
All other--net	0.40%	(0.10%)	(0.80%)
Effective tax rate (as a percent)	29.00%	27.80%	27.70%
Federal, State and Foreign Tax
Gross UTB Balance at January 1	$ 594	$ 622	$ 618
Additions based on tax positions related to the current year	80	92	128
Additions for tax positions of prior years	114	69	142
Reductions for tax positions of prior years	(120)	(123)	(161)
Settlements (UTB decreases)	(50)		(51)
Settlements (UTB increases)		9
Reductions due to lapse of applicable statute of limitations	(90)	(75)	(54)
Gross UTB Balance at December 31	528	594	622
Income tax
Net UTB impacting the effective tax rate	185	295	394
Period discussed over which uncertain tax positions could include material unrecognized tax benefits due to the closing of various audit years	12 months
Interest and penalties related to unrecognized tax benefits, expense (benefit) recognized on a gross basis	(12)	(1)	(9)
Interest and penalties related to unrecognized tax benefits, accrued on a gross basis	44	56
Change in effective income tax rate from prior reporting period to current reporting period (as a percent)	1.20%	0.10%
Reduction in deferred tax asset, elimination of subsidy			84
EPS impact of deferred tax asset reduction (in dollars per diluted share)			$ 0.12
Change in effective tax rate from prior reporting period to current reporting period as a result of international tax rates and other items (as a percent)	2.10%
Change in effective tax rate from prior reporting period to current reporting period as a result of international tax rates (as a percent)		2.50%
Change in effective tax rate from prior reporting period as a result of Medicare Modernization Act, one-time charge		(1.50%)
Change in effective tax rate from prior reporting period to current reporting period as a result of adjustments to income tax reserves (as a percent)		(0.70%)
Change in effective tax rate from prior reporting period to current reporting period as a result of adjustments to income tax reserves and other items (as a percent)	(0.90%)
Deferred tax assets valuation allowance	29	82
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	43
Federal | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration date	17 years
Federal | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration date	19 years
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	11
State | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration date	5 years
State | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration date	10 years
International
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 250
Operating loss carryforwards, expiration dates majority of high end of range	7 years
International | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration date	1 year

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Commitments and Contingencies (Details 5) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 ClassActions
Commercial Litigation - Cogent Inc. - Delaware Court of Chancery
Loss contingencies
Number of Cogent, Inc. shares held by subsidiary shareholders that have asserted appraisal rights	5,800,000
Number of lawsuits filed	3
Commercial Litigation - Ceradyne Inc.
Loss contingencies
Number of purported class actions filed	4
Number of Ceradyne shareholders who filed petition for appraisal rights under Delaware law	1
Commercial Litigation - Ceradyne Inc. California Superior Court
Loss contingencies
Number of purported class actions filed	2
Commercial Litigation - Ceradyne Inc. Delaware Chancery Court
Loss contingencies
Number of purported class actions filed	2
Commercial Litigation - Avery Dennison
Loss contingencies
Number of Avery patents for which 3M seeks a declaratory judgment	2
Total number of disputed terms ruled in favor of the company	16
Total number of disputed terms	19
Number of cases Avery has filed motion to join	3
Number of patents where reexamination was denied	1
Number of patents where all claims were rejected	2
Number of patents Avery has sought reexamination of in suit	5
Commercial Litigation - Meda AB
Loss contingencies
The estimated minimum amount the lawsuit seeks to recover	300
Number of new claims filed	3
Commercial Litigation - TransWeb Corporation
Loss contingencies
Number of counts jury did not rule in favor of Transweb	1

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Income Before Income Taxes

Income Before Income Taxes
(Millions)		2012		2011		2010
United States		$	2,902	$	2,516	$	2,778
International			3,449		3,515		2,977
	Total	$	6,351	$	6,031	$	5,755

Provision for Income Taxes

Provision for Income Taxes
(Millions)			2012		2011		2010
Currently payable
	Federal		$	743	$	431	$	837
	State			75		51		73
	International			918		861		796
Deferred
	Federal			(3)		181		55
	State			10		12		43
	International			97		138		(212)
		Total	$	1,840	$	1,674	$	1,592

Components of Deferred Tax Assets and Liabilities

Components of Deferred Tax Assets and Liabilities
(Millions)			2012		2011
Deferred tax assets:
	Accruals not currently deductible
		Employee benefit costs	$	115	$	96
		Product and other claims		161		155
		Miscellaneous accruals		137		133
	Pension costs			969		1,183
	Stock-based compensation			415		483
	Net operating/capital loss carryforwards			304		392
	Foreign tax credits			285		286
	Inventory			189		174
	Other - net			18		―
Gross deferred tax assets				2,593		2,902
Valuation allowance				(29)		(82)
Total deferred tax assets			$	2,564	$	2,820
Deferred tax liabilities:
	Product and other insurance receivables		$	(60)	$	(63)
	Accelerated depreciation			(858)		(745)
	Intangible amortization			(808)		(799)
	Other			―		(84)
Total deferred tax liabilities			$	(1,726)	$	(1,691)
Net deferred tax assets			$	838	$	1,129

Reconciliation of Effective Income Tax Rate

Reconciliation of Effective Income Tax Rate
		2012		2011		2010
Statutory U.S. tax rate		35.0	%	35.0	%	35.0	%
State income taxes - net of federal benefit		0.9		0.7		1.2
International income taxes - net		(4.2)		(4.6)		(7.1)
U.S. research and development credit		―		(0.5)		(0.2)
Reserves for tax contingencies		(1.9)		(1.2)		(0.5)
Medicare Modernization Act, one-time charge		―		―		1.5
Domestic Manufacturer's deduction		(1.2)		(1.5)		(1.4)
All other - net		0.4		(0.1)		(0.8)
	Effective worldwide tax rate	29.0	%	27.8	%	27.7	%

Reconciliation of Federal, State and Foreign Tax Gross Unrecognized Tax Benefits

Federal, State and Foreign Tax
(Millions)	2012		2011		2010
Gross UTB Balance at January 1	$	594	$	622	$	618
Additions based on tax positions related to the current year		80		92		128
Additions for tax positions of prior years		114		69		142
Reductions for tax positions of prior years		(120)		(123)		(161)
Settlements		(50)		9		(51)
Reductions due to lapse of applicable statute of limitations		(90)		(75)		(54)
Gross UTB Balance at December 31	$	528	$	594	$	622
Net UTB impacting the effective tax rate at December 31	$	185	$	295	$	394

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Goodwill and Intangible Assets (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Finite Lived Intangible Assets
Amortization expense for acquired intangible assets	$ 233	$ 235	$ 176
Expected amortization expense for acquired intangible assets recorded as of balance sheet date
2013	239
2014	214
2015	200
2016	186
2017	171
After 2017	$ 788

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Fair Value Measurements

12 Months Ended

Dec. 31, 2012

Fair Value Measurements

Fair Value Measurements

NOTE 12. Fair Value Measurements

3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include 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, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Assets and Liabilities that are Measured at Fair Value on a Recurring Basis:

For 3M, assets and liabilities that are measured at fair value on a recurring basis primarily relate to available-for-sale marketable securities, available-for-sale investments (included as part of investments in the Consolidated Balance Sheet) and certain derivative instruments. Derivatives include cash flow hedges, interest rate swaps and most net investment hedges. The information in the following paragraphs and tables primarily addresses matters relative to these financial assets and liabilities. Separately, there were no material fair value measurements with respect to nonfinancial assets or liabilities that are recognized or disclosed at fair value in the Company's financial statements on a recurring basis for 2012 and 2011.

3M uses various valuation techniques, which are primarily based upon the market and income approaches, with respect to financial assets and liabilities. Following is a description of the valuation methodologies used for the respective financial assets and liabilities measured at fair value.

Available-for-sale marketable securities — except auction rate securities:

Marketable securities, except auction rate securities, are valued utilizing multiple sources. A weighted average price is used for these securities. Market prices are obtained for these securities from a variety of industry standard data providers, security master files from large financial institutions, and other third-party sources. These multiple prices are used as inputs into a distribution-curve-based algorithm to determine the daily fair value to be used. 3M classifies U.S. treasury securities as level 1, while all other marketable securities (excluding auction rate securities) are classified as level 2. Marketable securities are discussed further in Note 8.

Available-for-sale marketable securities — auction rate securities only:

As discussed in Note 8, auction rate securities held by 3M failed to auction since the second half of 2007. As a result, investments in auction rate securities are valued utilizing third-party indicative bid levels in markets that are not active and broker-dealer valuation models that utilize inputs such as current/forward interest rates, current market conditions and credit default swap spreads. 3M classifies these securities as level 3.

Available-for-sale investments:

Investments include equity securities that are traded in an active market. Closing stock prices are readily available from active markets and are used as being representative of fair value. 3M classifies these securities as level 1.

Derivative instruments:

The Company's derivative assets and liabilities within the scope of ASC 815, Derivatives and Hedging, are required to be recorded at fair value. The Company's derivatives that are recorded at fair value include foreign currency forward and option contracts, commodity price swaps, interest rate swaps, and net investment hedges where the hedging instrument is recorded at fair value. Net investment hedges that use foreign currency denominated debt to hedge 3M's net investment are not impacted by the fair value measurement standard under ASC 820, as the debt used as the hedging instrument is marked to a value with respect to changes in spot foreign currency exchange rates and not with respect to other factors that may impact fair value.

3M has determined that foreign currency forwards and commodity price swaps will be considered level 1 measurements as these are traded in active markets which have identical asset or liabilities, while currency swaps, foreign currency options, interest rate swaps and cross-currency swaps will be considered level 2. For level 2 derivatives, 3M uses inputs other than quoted prices that are observable for the asset. These inputs include foreign currency exchange rates, volatilities, and interest rates. The level 2 derivative positions are primarily valued using standard calculations/models that use as their basis readily observable market parameters. Industry standard data providers are 3M's primary source for forward and spot rate information for both interest rates and currency rates, with resulting valuations periodically validated through third-party or counterparty quotes and a net present value stream of cash flows model.

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis.

						Fair Value Measurements
(Millions)				Fair Value at		Using Inputs Considered as
Description				Dec. 31, 2012		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
	Marketable securities:
		U.S. government agency securities		$	287	$	―	$	287	$	―
		Foreign government agency securities			67		―		67		―
		Corporate debt securities			965		―		965		―
		Certificates of deposit/time deposits			41		―		41		―
		Commercial paper			116		―		116		―
		Asset-backed securities:
			Automobile loan related		942		―		942		―
			Credit card related		157		―		157		―
			Equipment lease related		90		―		90		―
			Other		39		―		39		―
		U.S. treasury securities			72		72		―		―
		U.S. municipal securities			27		―		27		―
		Auction rate securities			7		―		―		7
	Investments				3		3		―		―
Derivative instruments — assets:
	Foreign currency forward/option contracts				49		49		―		―
	Interest rate swap contracts				23		―		23		―
Liabilities:
Derivative instruments — liabilities:
	Foreign currency forward/option contracts				105		104		1		―
	Commodity price swap contracts				1		1		―		―

						Fair Value Measurements
(Millions)				Fair Value at		Using Inputs Considered as
Description				Dec. 31, 2011		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
	Marketable securities:
		U.S. government agency securities		$	480	$	―	$	480	$	―
		Foreign government agency securities			23		―		23		―
		Corporate debt securities			668		―		668		―
		Certificates of deposit/time deposits			49		―		49		―
		Commercial paper			30		―		30		―
		Asset-backed securities:
			Automobile loan related		718		―		718		―
			Credit card related		268		―		268		―
			Equipment lease related		64		―		64		―
			Other		5		―		5		―
		U.S. treasury securities			34		34		―		―
		U.S. municipal securities			14		―		14		―
		Auction rate securities			4		―		―		4
	Investments				4		4		―		―
Derivative instruments — assets:
	Foreign currency forward/option contracts				107		98		9		―
	Interest rate swap contracts				28		―		28		―
Liabilities:
Derivative instruments — liabilities:
	Foreign currency forward/option contracts				42		42		―		―
	Commodity price swap contracts				7		7		―		―

The following table provides a reconciliation of the beginning and ending balances of items measured at fair value on a recurring basis in the table above that used significant unobservable inputs (Level 3).

(Millions)
Marketable securities – auction rate securities only		2012		2011		2010
Beginning balance		$	4	$	7	$	5
Total gains or losses:
	Included in earnings		―		―		―
	Included in other comprehensive income		3		(3)		2
Purchases, issuances, and settlements			―		―		―
Transfers in and/or out of Level 3			―		―		―
Ending balance (December 31)			7		4		7
Additional losses included in earnings due to reclassifications from
	other comprehensive income for:
	Securities sold during the period ended December 31		―		―		―
	Securities still held at December 31		―		―		―

In addition, the plan assets of 3M's pension and postretirement benefit plans are measured at fair value on a recurring basis (at least annually). Refer to Note 10.

Assets and Liabilities that are Measured at Fair Value on a Nonrecurring Basis:

Disclosures are required for certain assets and liabilities that are measured at fair value, but are recognized and disclosed at fair value on a nonrecurring basis in periods subsequent to initial recognition. For 3M, such measurements of fair value relate primarily to long-lived asset impairments. There were no material long-lived asset impairments for 2012, 2011 and 2010.

Fair Value of Financial Instruments:

The Company's financial instruments include cash and cash equivalents, marketable securities, accounts receivable, certain investments, accounts payable, borrowings, and derivative contracts. The fair values of cash and cash equivalents, accounts receivable, accounts payable, and short-term borrowings and current portion of long-term debt approximated carrying values because of the short-term nature of these instruments. Available-for-sale marketable securities and investments, in addition to certain derivative instruments, are recorded at fair values as indicated in the preceding disclosures. For its long-term debt the Company utilized third-party quotes to estimate fair values (classified as level 2). Information with respect to the carrying amounts and estimated fair values of these financial instruments follow:

	December 31, 2012					December 31, 2011
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	4,916	$	5,363	$	4,484	$	5,002

The fair values reflected above consider the terms of the related debt absent the impacts of derivative/hedging activity. The carrying amount of long-term debt referenced above is impacted by certain fixed-to-floating interest rate swaps that are designated as fair value hedges and by the designation of fixed rate Eurobond securities issued by the Company as hedging instruments of the Company's net investment in its European subsidiaries. 3M's fixed-rate bonds were trading at a premium at December 31, 2012 and 2011 due to the low interest rates and tightening of 3M's credit spreads.

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Quarterly Data (Unaudited)

12 Months Ended

Dec. 31, 2012

Quarterly Data (Unaudited)

Quarterly Data (Unaudited)

NOTE 17.Quarterly Data (Unaudited)

(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2012		Quarter		Quarter		Quarter		Quarter		2012
Net sales		$	7,486	$	7,534	$	7,497	$	7,387	$	29,904
Cost of sales			3,889		3,870		3,935		3,991		15,685
Net income including noncontrolling interest			1,141		1,186		1,180		1,004		4,511
Net income attributable to 3M			1,125		1,167		1,161		991		4,444
Earnings per share attributable to 3M
	common shareholders - basic		1.61		1.68		1.68		1.43		6.40
Earnings per share attributable to 3M
	common shareholders - diluted		1.59		1.66		1.65		1.41		6.32
(Millions, except per-share amounts)		First		Second		Third		Fourth		Year
2011		Quarter		Quarter		Quarter		Quarter		2011
Net sales		$	7,311	$	7,680	$	7,531	$	7,089	$	29,611
Cost of sales			3,802		4,040		4,027		3,824		15,693
Net income including noncontrolling interest			1,103		1,177		1,103		974		4,357
Net income attributable to 3M			1,081		1,160		1,088		954		4,283
Earnings per share attributable to 3M
	common shareholders - basic		1.52		1.63		1.54		1.36		6.05
Earnings per share attributable to 3M
	common shareholders - diluted		1.49		1.60		1.52		1.35		5.96

Gross profit is calculated as net sales minus cost of sales.

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Stock-Based Compensation (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation programs expense	$ 223	$ 253	$ 274
Income tax benefits	(67)	(80)	(98)
Stock-based compensation expenses, net of tax	156	173	176
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation programs expense	27	29	31
Selling, general and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation programs expense	167	192	209
Research, development and related expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation programs expense	$ 29	$ 32	$ 34

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Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill Information
Goodwill acquired during the period	$ 327	$ 255
Goodwill acquired during the period which is deductible for tax purposes	41	7
Increase (decrease) in goodwill related to preliminary allocation of purchase price for prior acquisitions	12	4
Goodwill
Balance at the beginning of the period	7,047	6,820
Acquisition activity	339	259
Translation and other	(1)	(32)
Balance at the end of the period	7,385	7,047
Industrial
Goodwill
Balance at the beginning of the period	1,972	1,761
Acquisition activity	204	205
Translation and other	(2)	6
Balance at the end of the period	2,174	1,972
Safety and Graphics
Goodwill
Balance at the beginning of the period	1,713	1,746
Acquisition activity	41	3
Translation and other	(3)	(36)
Balance at the end of the period	1,751	1,713
Electronics and Energy
Goodwill
Balance at the beginning of the period	1,608	1,591
Acquisition activity	0	6
Translation and other	14	11
Balance at the end of the period	1,622	1,608
Health Care
Goodwill
Balance at the beginning of the period	1,508	1,517
Acquisition activity	88	3
Translation and other	2	(12)
Balance at the end of the period	1,598	1,508
Consumer
Goodwill
Balance at the beginning of the period	246	205
Acquisition activity	6	42
Translation and other	(12)	(1)
Balance at the end of the period	$ 240	$ 246

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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation

Stock-Based Compensation Expense

Stock-Based Compensation Expense
	Years ended December 31
(Millions)	2012		2011		2010
Cost of sales	$	27	$	29	$	31
Selling, general and administrative expenses		167		192		209
Research, development and related expenses		29		32		34
Stock-based compensation expenses	$	223	$	253	$	274
Income tax benefits	$	(67)	$	(80)	$	(98)
Stock-based compensation expenses, net of tax	$	156	$	173	$	176

Stock Option Activity

The following table summarizes stock option activity during the twelve months ended December 31:
Stock Option Program
			2012			2011			2010
			Number of Options	Weighted Average Exercise Price		Number of Options	Weighted Average Exercise Price		Number of Options	Weighted Average Exercise Price
Under option —
	January 1		64,148,415	$	77.28	70,335,044	$	74.80	74,268,165	$	72.39
	Granted:
		Annual	5,770,190		87.91	5,514,500		89.46	5,788,313		78.79
		Progressive (Reload)	110,065		89.65	237,839		94.02	188,105		88.67
		Other	51,661		89.25	8,953		86.71	27,911		82.13
	Exercised		(13,123,617)		68.78	(11,625,863)		68.47	(9,678,654)		59.11
	Canceled		(391,684)		83.65	(322,058)		75.09	(258,796)		70.76
	December 31		56,565,030	$	80.33	64,148,415	$	77.28	70,335,044	$	74.80
Options exercisable
	December 31		45,207,143	$	78.78	52,644,364	$	76.90	58,201,617	$	75.87

Stock Option Assumptions

Stock Option Assumptions
	Annual									Progressive (Reload)
	2012			2011			2010			2012			2011			2010
Exercise price	$	87.89		$	89.47		$	78.72		$	87.89		$	93.94		$	86.72
Risk-free interest rate		1.1	%		2.8	%		2.8	%		0.2	%		0.4	%		0.6	%
Dividend yield		2.6	%		2.6	%		2.5	%		2.6	%		2.6	%		2.5	%
Volatility		24.5	%		22.0	%		25.7	%		23.4	%		21.5	%		33.2	%
Expected life (months)		74			72			72			19			15			17
Black-Scholes fair value	$	14.94		$	16.10		$	16.50		$	8.50		$	7.49		$	12.01

Restricted Stock and Restricted Stock Units Activity

Restricted Stock and Restricted Stock Units
				2012			2011			2010
					Weighted Average			Weighted Average			Weighted Average
				Number of	Grant Date		Number of	Grant Date		Number of	Grant Date
				Awards	Fair Value		Awards	Fair Value		Awards	Fair Value
Nonvested balance —
	As of January 1			4,858,972	$	73.02	4,812,657	$	68.75	4,379,480	$	68.85
		Granted
			Annual	968,522		87.92	889,448		89.46	902,549		78.81
			Other	99,337		85.07	351,624		87.07	527,823		70.09
		Vested		(2,594,468)		63.51	(1,077,816)		72.21	(948,233)		79.12
		Forfeited		(70,801)		82.65	(116,941)		72.01	(48,962)		76.22
	As of December 31			3,261,562	$	85.17	4,858,972	$	73.02	4,812,657	$	68.75

Performance Shares Activity

			2012			2011			2010
				Weighted Average			Weighted Average			Weighted Average
			Number of	Grant Date		Number of	Grant Date		Number of	Grant Date
			Awards	Fair Value		Awards	Fair Value		Awards	Fair Value
Undistributed balance —
	As of January 1		878,872	$	78.55	760,645	$	73.99	―	$	―
		Granted	467,531		81.55	415,024		84.58	370,575		74.46
		Distributed	―		―	(206,410)		72.77	―		―
		Performance change	(178,838)		81.27	(39,323)		82.10	396,390		73.55
		Forfeited	(78,481)		80.21	(51,064)		80.20	(6,320)		73.92
	As of December 31		1,089,084	$	79.27	878,872	$	78.55	760,645	$	73.99

General Employees' Stock Purchase Plan (GESPP)

General Employees' Stock Purchase Plan
		2012			2011			2010
			Weighted			Weighted			Weighted
			Average			Average			Average
		Shares	Exercise Price		Shares	Exercise Price		Shares	Exercise Price
Options granted		1,455,545	$	75.32	1,433,609	$	73.67	1,325,579	$	70.57
Options exercised		(1,455,545)		75.32	(1,433,609)		73.67	(1,325,579)		70.57
Shares available for grant -
	December 31	31,445,207			2,900,751			4,334,360

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Consolidated Balance Sheet (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheet
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	944,033,056	944,033,056
Treasury stock (in shares)	256,941,406	249,063,015
Allowances for doubtful accounts receivable	$ 105	$ 108
Common stock, shares outstanding (in shares)	687,091,650	694,970,041

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Fair Value Measurements (Details 4) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financial Instruments
Long-term debt - excluding current portion - carrying value	$ 4,916	$ 4,484
Carrying Amount
Financial Instruments
Long-term debt - excluding current portion - carrying value	4,916	4,484
Fair Value
Financial Instruments
Long-term debt, excluding current portion - fair value	$ 5,363	$ 5,002

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Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Significant Accounting Policies

Significant Accounting Policies

NOTE 1. Significant Accounting Policies

Consolidation: 3M is a diversified global manufacturer, technology innovator and marketer of a wide variety of products. All subsidiaries are consolidated. All significant intercompany transactions are eliminated. As used herein, the term “3M” or “Company” refers to 3M Company and subsidiaries unless the context indicates otherwise.

Foreign currency translation: Local currencies generally are considered the functional currencies outside the United States. Assets and liabilities for operations in local-currency environments are translated at year-end exchange rates. Income and expense items are translated at average rates of exchange prevailing during the year. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders' equity.

Although local currencies are typically considered as the functional currencies outside the United States, under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, the reporting currency of a foreign entity's parent is assumed to be that entity's functional currency when the economic environment of a foreign entity is highly inflationary—generally when its cumulative inflation is approximately 100 percent or more for the three years that precede the beginning of a reporting period. 3M has a subsidiary in Venezuela with operating income representing less than 1.0 percent of 3M's consolidated operating income for 2012. 3M determined that the cumulative inflation rate of Venezuela in November 2009 and since has exceeded 100 percent. Accordingly, the financial statements of the Venezuelan subsidiary were remeasured as if its functional currency were that of its parent beginning January 1, 2010.

Regulations in Venezuela require the purchase and sale of foreign currency to be made at official rates of exchange that are fixed from time to time by the Venezuelan government. Certain laws in the country, however, provided an exemption for the purchase and sale of certain securities and resulted in an indirect “parallel” market through which companies obtained foreign currency without having to purchase it from Venezuela's Commission for the Administration of Foreign Exchange (CADIVI). In May 2010, the Venezuelan government took control of the previously freely-traded parallel market. The government-controlled rate that emerged under the new Transaction System for Foreign Currency Denominated Securities (SITME) is not as unfavorable as the previous parallel rate in comparison to the official rates. As previously disclosed, as of December 31, 2009 (prior to the change in functional currency of 3M's Venezuelan subsidiary in January 2010), 3M changed to use of the parallel exchange rate for translation of the financial statements of its Venezuelan subsidiary. Beginning January 1, 2010, as discussed above, the financial statements of the Venezuelan subsidiary are remeasured as if its functional currency were that of its parent. This remeasurement utilized the parallel rate through May 2010 and the SITME rate thereafter.

The Company continues to monitor circumstances relative to its Venezuelan subsidiary. Other factors notwithstanding, the change in functional currency of this subsidiary and associated remeasurement beginning January 1, 2010 as a result of Venezuela's economic environment decreased net sales of the Venezuelan subsidiary by approximately two-thirds in 2010 in comparison to 2009 (based on exchange rates at 2009 year-end), but did not otherwise have a material impact on operating income and 3M's consolidated results of operations.

Reclassifications: Certain amounts in the prior years' consolidated financial statements have been reclassified to conform to the current year presentation.

Use of estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

Cash and cash equivalents: Cash and cash equivalents consist of cash and temporary investments with maturities of three months or less when acquired.

Marketable securities: The classification of marketable securities as current or non-current is dependent upon management's intended holding period, the security's maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. 3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders' equity. Such an unrealized loss does not reduce net income for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.

Investments: Investments primarily include equity method, cost method, and available-for-sale equity investments. Available-for-sale investments are recorded at fair value. Unrealized gains and losses relating to investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss) in shareholders' equity.

Other assets: Other assets include deferred income taxes, product and other insurance receivables, the cash surrender value of life insurance policies, and other long-term assets. Investments in life insurance are reported at the amount that could be realized under contract at the balance sheet date, with any changes in cash surrender value or contract value during the period accounted for as an adjustment of premiums paid. Cash outflows and inflows associated with life insurance activity are included in “Purchases of marketable securities and investments” and “Proceeds from sale of marketable securities and investments,” respectively.

Inventories: Inventories are stated at the lower of cost or market, with cost generally determined on a first-in, first-out basis.

Property, plant and equipment: Property, plant and equipment, including capitalized interest and internal engineering costs, are recorded at cost. Depreciation of property, plant and equipment generally is computed using the straight-line method based on the estimated useful lives of the assets. The estimated useful lives of buildings and improvements primarily range from 10 to 40 years, with the majority in the range of 20 to 40 years. The estimated useful lives of machinery and equipment primarily range from three to 15 years, with the majority in the range of five to 10 years. Fully depreciated assets are retained in property and accumulated depreciation accounts until disposal. Upon disposal, assets and related accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposal, is charged or credited to operations. Property, plant and equipment amounts are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss would be recognized when the carrying amount of an asset exceeds the estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. The amount of the impairment loss recorded is calculated by the excess of the asset's carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis.

Conditional asset retirement obligations: A liability is initially recorded at fair value for an asset retirement obligation associated with the retirement of tangible long-lived assets in the period in which it is incurred if a reasonable estimate of fair value can be made. Conditional asset retirement obligations exist for certain long-term assets of the Company. The obligation is initially measured at fair value using expected present value techniques. Over time the liabilities are accreted for the change in their present value and the initial capitalized costs are depreciated over the remaining useful lives of the related assets. The asset retirement obligation liability was $86 million and $79 million at December 31, 2012 and 2011, respectively.

Goodwill: Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination. Goodwill is not amortized. Goodwill is tested for impairment annually in the fourth quarter of each year, and is tested for impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amount may be impaired. Impairment testing for goodwill is done at a reporting unit level, with all goodwill assigned to a reporting unit. Reporting units are one level below the business segment level, but can be combined when reporting units within the same segment have similar economic characteristics. 3M did not combine any of its reporting units for impairment testing. An impairment loss generally would be recognized when the carrying amount of the reporting unit's net assets exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using earnings for the reporting unit multiplied by a price/earnings ratio for comparable industry groups, or by using a discounted cash flow analysis.

Intangible assets: Intangible assets include patents, tradenames and other intangible assets acquired from an independent party. Intangible assets with an indefinite life, namely certain tradenames, are not amortized. Intangible assets with a definite life are amortized over a period ranging from one to 20 years generally on a straight line basis, unless another systematic and rational basis is more representative of the asset's use. Indefinite-lived intangible assets are tested for impairment annually, and are tested for impairment between annual tests if an event occurs or circumstances change that would indicate that the carrying amount may be impaired. Intangible assets with a definite life are tested for impairment whenever events or circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss is recognized when the carrying amount of an asset exceeds the estimated undiscounted cash flows used in determining the fair value of the asset. The amount of the impairment loss recorded is calculated by the excess of the asset's carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis. Costs related to internally developed intangible assets, such as patents, are expensed as incurred, primarily in “Research, development and related expenses.”

Restructuring actions: Restructuring actions generally include significant actions involving employee-related severance charges, contract termination costs, and impairment of assets associated with such actions. Employee-related severance charges are largely based upon distributed employment policies and substantive severance plans. These charges are reflected in the quarter when the actions are probable and the amounts are estimable, which typically is when management approves the associated actions. Severance amounts for which affected employees were required to render service in order to receive benefits at their termination dates were measured at the date such benefits were communicated to the applicable employees and recognized as expense over the employees' remaining service periods. Contract termination and other charges primarily reflect costs to terminate a contract before the end of its term (measured at fair value at the time the Company provided notice to the counterparty) or costs that will continue to be incurred under the contract for its remaining term without economic benefit to the Company. Asset impairment charges related to intangible assets and property, plant and equipment reflect the excess of the assets' carrying values over their fair values.

Revenue (sales) recognition: The Company sells a wide range of products to a diversified base of customers around the world and has no material concentration of credit risk. Revenue is recognized when the risks and rewards of ownership have substantively transferred to customers. This condition normally is met when the product has been delivered or upon performance of services. The Company records estimated reductions to revenue or records expense for customer and distributor incentives, primarily comprised of rebates and free goods, at the time of the initial sale. These sales incentives are accounted for in accordance with ASC 605, Revenue Recognition. The estimated reductions of revenue for rebates are based on the sales terms, historical experience, trend analysis and projected market conditions in the various markets served. Since the Company serves numerous markets, the rebate programs offered vary across businesses, but the most common incentive relates to amounts paid or credited to customers for achieving defined volume levels or growth objectives. Free goods are accounted for as an expense and recorded in cost of sales. Sales, use, value-added and other excise taxes are not recognized in revenue.

The vast majority of 3M's sales agreements are for standard products and services with customer acceptance occurring upon delivery of the product or performance of the service. However, to a limited extent 3M also enters into agreements that involve multiple elements (such as equipment, installation and service), software, or non-standard terms and conditions.

For non-software multiple-element arrangements, in connection with 3M's adoption on a prospective basis of Accounting Standards Updated (ASU) No. 2009-13, Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force, to new or materially modified arrangements beginning in 2011, the Company recognizes revenue for delivered elements when they have stand-alone value to the customer, they have been accepted by the customer, and for which there are only customary refund or return rights. Arrangement consideration is allocated to the deliverables by use of the relative selling price method. The selling price used for each deliverable is based on vendor-specific objective evidence (VSOE) if available, third-party evidence (TPE) if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. Estimated selling price is determined in a manner consistent with that used to establish the price to sell the deliverable on a standalone basis. For applicable pre-existing arrangements, 3M recognizes revenue for delivered elements when the fair values of the undelivered items are known and allocation of consideration to the delivered items is most often based on the residual method. In addition to the preceding conditions under ASU No. 2009-13 and for applicable pre-existing arrangements, equipment revenue is not recorded until the installation has been completed if equipment acceptance is dependent upon installation or if installation is essential to the functionality of the equipment. Installation revenues are not recorded until installation has been completed.

For arrangements (or portions of arrangements) falling within software revenue recognition standards and that do not involve significant production, modification, or customization, revenue for each software or software-related element is recognized when the Company has VSOE of the fair value of all of the undelivered elements and applicable criteria have been met for the delivered elements. When the arrangements involve significant production, modification or customization, long-term construction-type accounting involving proportional performance is generally employed.

For prepaid service contracts, sales revenue is recognized on a straight-line basis over the term of the contract, unless historical evidence indicates the costs are incurred on other than a straight-line basis. License fee revenue is recognized as earned, and no revenue is recognized until the inception of the license term.

On occasion, agreements will contain milestones, or 3M will recognize revenue based on proportional performance. For these agreements, and depending on the specifics, 3M may recognize revenue upon completion of a substantive milestone, or in proportion to costs incurred to date compared with the estimate of total costs to be incurred.

Accounts receivable and allowances: Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains allowances for bad debts, cash discounts, product returns and various other items. The allowance for doubtful accounts and product returns is based on the best estimate of the amount of probable credit losses in existing accounts receivable and anticipated sales returns. The Company determines the allowances based on historical write-off experience by industry and regional economic data and historical sales returns. The Company reviews the allowance for doubtful accounts monthly. The Company does not have any significant off-balance-sheet credit exposure related to its customers.

Advertising and merchandising: These costs are charged to operations in the period incurred, and totaled $482 million in 2012, $518 million in 2011 and $512 million in 2010.

Research, development and related expenses: These costs are charged to operations in the period incurred and are shown on a separate line of the Consolidated Statement of Income. Research, development and related expenses totaled $1.634 billion in 2012, $1.570 billion in 2011 and $1.434 billion in 2010. Research and development expenses, covering basic scientific research and the application of scientific advances in the development of new and improved products and their uses, totaled $1.079 billion in 2012, $1.036 billion in 2011 and $919 million in 2010. Related expenses primarily include technical support provided by 3M to customers who are using existing 3M products; internally developed patent costs, which include costs and fees incurred to prepare, file, secure and maintain patents; and amortization of acquired patents.

Internal-use software: The Company capitalizes direct costs of materials and services used in the development of internal-use software. Amounts capitalized are amortized over a period of three to seven years, generally on a straight-line basis, unless another systematic and rational basis is more representative of the software's use. Amounts are reported as a component of either machinery and equipment or capital leases within property, plant and equipment.

Environmental: Environmental expenditures relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed. Reserves for liabilities related to anticipated remediation costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company's commitment to a plan of action. Environmental expenditures for capital projects that contribute to current or future operations generally are capitalized and depreciated over their estimated useful lives.

Income taxes: The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of December 31, 2012 and 2011, the Company recorded $29 million and $82 million, respectively, of valuation allowances. The Company recognizes and measures its uncertain tax positions based on the rules under ASC 740, Income Taxes.

Earnings per share: The difference in the weighted average 3M shares outstanding for calculating basic and diluted earnings per share attributable to 3M common shareholders is the result of the dilution associated with the Company's stock-based compensation plans. Certain options outstanding under these stock-based compensation plans during the years 2012, 2011 and 2010 were not included in the computation of diluted earnings per share attributable to 3M common shareholders because they would not have had a dilutive effect (12.6 million average options for 2012, 17.4 million average options for 2011, and 26.3 million average options for 2010). The computations for basic and diluted earnings per share for the years ended December 31 follow:

Earnings Per Share Computations
(Amounts in millions, except per share amounts)			2012		2011		2010
Numerator:
	Net income attributable to 3M		$	4,444	$	4,283	$	4,085
Denominator:
	Denominator for weighted average 3M common shares
		outstanding – basic		693.9		708.5		713.7
	Dilution associated with the Company’s stock-based
		compensation plans		9.4		10.5		11.8
	Denominator for weighted average 3M common shares
		outstanding – diluted		703.3		719.0		725.5
Earnings per share attributable to 3M common shareholders – basic			$	6.40	$	6.05	$	5.72
Earnings per share attributable to 3M common shareholders – diluted			$	6.32	$	5.96	$	5.63

Stock-based compensation: The Company recognizes compensation expense for its stock-based compensation programs, which include stock options, restricted stock, restricted stock units, performance shares, and the General Employees' Stock Purchase Plan (GESPP). Under applicable accounting standards, the fair value of share-based compensation is determined at the grant date and the recognition of the related expense is recorded over the period in which the share-based compensation vests. Refer to Note 14 for additional information.

Comprehensive income: Total comprehensive income and the components of accumulated other comprehensive income (loss) are presented in the Consolidated Statement of Comprehensive Income and the Consolidated Statement of Changes in Equity. Accumulated other comprehensive income (loss) is composed of foreign currency translation effects (including hedges of net investments in international companies), defined benefit pension and postretirement plan adjustments, unrealized gains and losses on available-for-sale debt and equity securities, and unrealized gains and losses on cash flow hedging instruments.

Derivatives and hedging activities: All derivative instruments within the scope of ASC 815, Derivatives and Hedging, are recorded on the balance sheet at fair value. The Company uses interest rate swaps, currency and commodity price swaps, and foreign currency forward and option contracts to manage risks generally associated with foreign exchange rate, interest rate and commodity market volatility. All hedging instruments that qualify for hedge accounting are designated and effective as hedges, in accordance with U.S. generally accepted accounting principles. If the underlying hedged transaction ceases to exist, all changes in fair value of the related derivatives that have not been settled are recognized in current earnings. Instruments that do not qualify for hedge accounting are marked to market with changes recognized in current earnings. Cash flows from derivative instruments are classified in the statement of cash flows in the same category as the cash flows from the items subject to designated hedge or undesignated (economic) hedge relationships. The Company does not hold or issue derivative financial instruments for trading purposes and is not a party to leveraged derivatives.

Credit risk:The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company's risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. 3M enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between a 3M entity and the counterparty as a result of multiple, separate derivative transactions. The Company does not anticipate nonperformance by any of these counterparties. 3M has elected to present the fair value of derivative assets and liabilities within the Company's consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation.

Fair value measurements: 3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include 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, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Acquisitions: The Company accounts for business acquisitions in accordance with ASC 805, Business Combinations. This standard requires the acquiring entity in a business combination to recognize all (and only) the assets acquired and liabilities assumed in the transaction and establishes the acquisition-date fair value as the measurement objective for all assets acquired and liabilities assumed in a business combination. Certain provisions of this standard prescribe, among other things, the determination of acquisition-date fair value of consideration paid in a business combination (including contingent consideration) and the exclusion of transaction and acquisition-related restructuring costs from acquisition accounting.

New Accounting Pronouncements

In October 2009, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2009-13, Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force, that provides amendments to the criteria for separating consideration in multiple-deliverable arrangements. As a result of these amendments, multiple-deliverable revenue arrangements are separated in more circumstances than under pre-existing U.S. GAAP. The ASU does this by establishing a selling price hierarchy for determining the selling price of a deliverable. The selling price used for each deliverable is based on vendor-specific objective evidence (VSOE) if available, third-party evidence (TPE) if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. A vendor is required to determine its best estimate of selling price in a manner that is consistent with that used to determine the price to sell the deliverable on a standalone basis. This ASU also eliminates the residual method of allocation and requires that arrangement consideration be allocated at the inception of the arrangement to all deliverables using the relative selling price method, which allocates any discount in the overall arrangement proportionally to each deliverable based on its relative selling price. The ASU does not apply to arrangements for which industry specific allocation and measurement guidance exists, such as long-term construction contracts and software transactions. For 3M, ASU No. 2009-13 was effective beginning January 1, 2011. 3M elected to adopt the provisions of this standard prospectively to new or materially modified arrangements beginning on the effective date. The adoption of this standard did not have a material impact on 3M's consolidated results of operations or financial condition.

In October 2009, the FASB issued ASU No. 2009-14, Certain Revenue Arrangements That Include Software Elements—a consensus of the FASB Emerging Issues Task Force, that reduces the types of transactions that fall within the scope of software revenue recognition guidance. Pre-existing software revenue recognition guidance required that its provisions be applied to an entire arrangement involving the sale of any products or services containing or utilizing software when the software was considered more than incidental to the product or service. As a result of the amendments included in ASU No. 2009-14, many tangible products and services that rely on software are accounted for under the multiple-element arrangements revenue recognition guidance rather than under the software revenue recognition guidance. Under the ASU, the following components are excluded from the scope of software revenue recognition guidance: the tangible element of the product, software products bundled with tangible products where the software components and non-software components function together to deliver the product's essential functionality, and undelivered components that relate to software that is essential to the tangible product's functionality. The ASU also provides guidance on how to allocate transaction consideration when an arrangement contains both deliverables within the scope of software revenue guidance (software deliverables) and deliverables not within the scope of that guidance (non-software deliverables). For 3M, ASU No. 2009-14 was effective beginning January 1, 2011. 3M elected to adopt the provisions of this standard prospectively to new or materially modified arrangements beginning on the effective date. The adoption of this standard did not have a material impact on 3M's consolidated results of operations or financial condition.

In January 2010, the FASB issued ASU No. 2010-06, Improving Disclosures About Fair Value Measurements, that amends pre-existing disclosure requirements under ASC 820 by adding required disclosures about items transferring into and out of levels 1 and 2 in the fair value hierarchy; adding separate disclosures about purchases, sales, issuances, and settlements relative to level 3 measurements; and clarifying, among other things, the pre-existing fair value disclosures about the level of disaggregation. For 3M, this ASU was effective for the first quarter of 2010, except for the requirement to provide level 3 activity of purchases, sales, issuances, and settlements on a gross basis, which was effective beginning the first quarter of 2011. Since this standard impacts disclosure requirements only, its adoption did not have a material impact on 3M's consolidated results of operations or financial condition.

In April 2010, the FASB issued ASU No. 2010-17, Milestone Method of Revenue Recognition—a consensus of the FASB Emerging Issues Task Force that recognizes the milestone method as an acceptable revenue recognition method for substantive milestones in research or development arrangements. This standard requires its provisions be met in order for an entity to recognize consideration that is contingent upon achievement of a substantive milestone as revenue in its entirety in the period in which the milestone is achieved. In addition, this ASU requires disclosure of certain information with respect to arrangements that contain milestones. For 3M, this standard was effective prospectively beginning January 1, 2011. The adoption of this standard did not have a material impact on 3M's consolidated results of operations or financial condition.

In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. This standard clarifies guidance on how to measure fair value and is largely consistent with existing fair value measurement principles. The ASU also expands existing disclosure requirements for fair value measurements and makes other amendments. For 3M, this ASU was effective prospectively beginning January 1, 2012. The adoption of this standard did not have a material impact on 3M's consolidated results of operations or financial condition.

In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income, and in December 2011 issued ASU No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassification of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05. These standards require entities to present items of net income and other comprehensive income either in a single continuous statement, or in separate, but consecutive, statements of net income and other comprehensive income. The new requirements do not change which components of comprehensive income are recognized in net income or other comprehensive income, or when an item of other comprehensive income must be reclassified to net income. Also, the earnings-per share computation does not change. However, the option under previous standards to report other comprehensive income and its components in the statement of changes in equity was eliminated. For 3M, these standards were effective retrospectively beginning January 1, 2012, with early adoption permitted. 3M adopted these standards in the fourth quarter of 2011. Since these standards impact presentation and disclosure requirements only, their adoption did not have a material impact on 3M's consolidated results of operations or financial condition.

In September 2011, the FASB issued ASU No. 2011-08, Testing Goodwill for Impairment. Under this standard, entities testing goodwill for impairment now have an option of performing a qualitative assessment before having to calculate the fair value of a reporting unit. If an entity determines, on the basis of qualitative factors, that the fair value of the reporting unit is more-likely-than-not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. For 3M, this ASU was effective beginning January 1, 2012, with early adoption permitted under certain conditions. The adoption of this standard did not have a material impact on 3M's consolidated results of operations or financial condition.

In December 2011, the FASB issued ASU No. 2011-11, Disclosures About Offsetting Assets and Liabilities, and in January2013 issued ASU No. 2013-01, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities. These standards created new disclosure requirements regarding the nature of an entity's rights of setoff and related arrangements associated with its derivative instruments, repurchase agreements, and securities lending transactions. Certain disclosures of the amounts of certain instruments subject to enforceable master netting arrangements are required, irrespective of whether the entity has elected to offset those instruments in the statement of financial position. For 3M, these ASUswere effective January 1, 2013 with retrospective application required. The requirements of these standards have been applied retrospectively to all periods presented in this Current Report on Form 8-K and are included in Note 11. Since these standards impact disclosure requirements only, their adoption did not have a material impact on 3M's consolidated results of operations or financial condition.

In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. Under this standard, entities testing long-lived intangible assets for impairment now have an option of performing a qualitative assessment to determine whether further impairment testing is necessary. If an entity determines, on the basis of qualitative factors, that the fair value of the indefinite-lived intangible asset is more-likely-than-not less than the carrying amount, the existing quantitative impairment test is required. Otherwise, no further impairment testing is required. For 3M, this ASU is effective beginning January 1, 2013, with early adoption permitted under certain conditions. The adoption of this standard is not expected to have a material impact on 3M's consolidated results of operations or financial condition.

In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under this standard, entities are required to disclose additional information with respect to changes in accumulated other comprehensive income (AOCI) balances by component and significant items reclassified out of AOCI. Expanded disclosures for presentation of changes in AOCI involve disaggregating the total change of each component of other comprehensive income (for example, unrealized gains or losses on available for sale marketable securities) as well as presenting separately for each such component the portion of the change in AOCI related to (1) amounts reclassified into income and (2) current-period other comprehensive income. Additionally, for amounts reclassified into income, disclosure in one location is required, based uponeach specific AOCI component, ofthe amounts impacting individual income statement line items. Disclosure of the income statement line item impactsis required only for components of AOCI reclassified into income in their entirety. Therefore, disclosure of the income statement line items affected by AOCI components such as net periodic benefit costs is not included. The disclosures required with respect to income statement line item impacts are to be made in either the notes to the consolidated financial statements or parenthetically on the face of the financial statements. For 3M, this ASU was effective beginning January 1, 2013. The requirements of this standard have been applied retrospectively to all periods presented in this Current Form on Form 8-K and are included in Note 5. Because this standard only impacted presentation and disclosure requirements, its adoption did not have a material impact on 3M's consolidated results of operations or financial condition.

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Supplemental Equity and Comprehensive Income Information (Details 5) In Millions, unless otherwise specified	3 Months Ended											12 Months Ended			6 Months Ended
	Dec. 31, 2012 USD ($)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 2011 USD ($)	Jun. 30, 2010 USD ($)	Mar. 31, 2010 USD ($)	Mar. 31, 2010 JPY (¥)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2009 Sumitomo 3M Limited USD ($)	Mar. 31, 2010 Sumitomo 3M Limited
Transactions with Sumitomo 3M
3M's effective ownership before transaction (as a percent)															75.00%	71.50%
3M's effective ownership after transaction (as a percent)															71.50%	75.00%
Increase in noncontrolling interest															$ 81
Cash paid to acquire additional shares										63	5,800
Note payable issued to Sumitomo Electric Industries										188	17,400
Purchase of subsidiary shares including other transfers from noncontrolling interest										278
Net income attributable to 3M	991	1,161	1,167	1,125	954	1,088	1,160	1,081				4,444	4,283	4,085
Transfer from noncontrolling interest									24	22				43
Change in 3M Company shareholders' equity from net income attributable to 3M and transfers from noncontrolling interest														$ 4,128

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Derivatives (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	$ 72	$ 135
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	106	49
Year-on-year currency effects, including hedging impact	(103)	154
Year-on-year derivative and other transaction gains and (losses) impact	49
Derivatives designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	62	110
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	86	41
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other current assets
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	39	82
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	85	34
Derivatives designated as hedging instruments | Commodity price swap contracts | Other current assets
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Derivatives designated as hedging instruments | Commodity price swap contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	7
Derivatives designated as hedging instruments | Interest rate swap contracts | Other assets
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	23	28
Derivatives designated as hedging instruments | Interest rate swap contracts | Other liabilities
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Derivatives not designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	10	25
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	20	8
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Other current assets
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	10	25
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	$ 20	$ 8

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Long-Term Debt and Short-Term Borrowings (Details) In Millions, unless otherwise specified	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2012 Floating Rate UK Borrowing Due December 2015 USD ($)	Dec. 31, 2012 Floating Rate UK Borrowing Due December 2015 GBP (£)	Dec. 31, 2011 Floating Rate UK Borrowing Due December 2015 USD ($)	Dec. 31, 2012 Eurobond 750 Million Euros Issued July2007 USD ($)	Dec. 31, 2012 Eurobond 275 Million Euros Issued December2007 USD ($)	Dec. 31, 2012 Fixed rate Eurobond Due 2014 USD ($)	Dec. 31, 2012 Fixed rate Eurobond Due 2014 EUR (€)	Dec. 31, 2011 Fixed rate Eurobond Due 2014 USD ($)	Dec. 31, 2012 Fixed rate Medium-term note due 2013 USD ($)	Dec. 31, 2011 Fixed rate Medium-term note due 2013 USD ($)	Dec. 31, 2012 Fixed rate Medium-term note due 2016 USD ($)	Dec. 31, 2011 Fixed rate Medium-term note due 2016 USD ($)	Dec. 31, 2012 Fixed rate Medium-term note due 2017 USD ($)	Dec. 31, 2011 Fixed rate Medium-term note due 2017 USD ($)	Dec. 31, 2012 Fixed rate Medium-term note due 2022 USD ($)	Dec. 31, 2011 Fixed rate Medium-term note due 2022 USD ($)	Dec. 31, 2012 Fixed rate 30-year bond due 2037 USD ($)	Dec. 31, 2011 Fixed rate 30-year bond due 2037 USD ($)	Dec. 31, 2012 Fixed rate Medium-term note which matured in 2012 USD ($)	Dec. 31, 2011 Fixed rate Medium-term note which matured in 2012 USD ($)	Dec. 31, 2012 Floating rate Eurobond Due 2014 USD ($)	Dec. 31, 2012 Floating rate Eurobond Due 2014 EUR (€)	Dec. 31, 2011 Floating rate Eurobond Due 2014 USD ($)	Dec. 31, 2012 Fixed rate 30-year debenture due 2028 USD ($)	Dec. 31, 2011 Fixed rate 30-year debenture due 2028 USD ($)	Dec. 31, 2012 Floating rate note due 2041 USD ($)	Dec. 31, 2011 Floating rate note due 2041 USD ($)	Dec. 31, 2012 Floating rate note due 2044 USD ($)	Dec. 31, 2011 Floating rate note due 2044 USD ($)	Dec. 31, 2004 Floating rate note due 2044 USD ($)	Dec. 31, 2012 Various fixed and floating rate Other borrowings due 2013-2040 USD ($)	Dec. 31, 2011 Various fixed and floating rate Other borrowings due 2013-2040 USD ($)	Dec. 31, 2012 Current portion of long-term debt USD ($)	Dec. 31, 2011 Current portion of long-term debt USD ($)	Dec. 31, 2012 Commercial paper USD ($)	Dec. 31, 2011 Commercial paper USD ($)	Dec. 31, 2012 Other borrowings USD ($)	Dec. 31, 2011 Other borrowings USD ($)
Long-Term Debt
Principal amount				£ 66		$ 1,017	$ 366		€ 775		$ 850		$ 1,000		$ 650		$ 600		$ 750					€ 250		$ 330		$ 97		$ 59		$ 60
Interest rate - effective			1.34%	1.34%				4.30%	4.30%		4.42%		1.62%		1.10%		2.17%		5.73%				0.88%	0.88%		6.01%		0.00%		0.00%			0.36%
Total long-term debt	5,902	5,047	106		0			1,034		1,017	850	849	994	992	647	0	592	0	747	747	0	500	349		347	347	348	97	97	59	59		80	91	986	563
Long-term debt - excluding current portion - carrying value	4,916	4,484
Short-Term Borrowings and Current Portion of Long-Term Debt
Total short-term borrowings and current portion of long-term debt	1,085	682																																			0	0	99	119
Weighted-Average Effective Interest Rate
Short-term weighted-average effective interest rate	3.91%	4.32%																																	3.83%				4.70%
Long-term weighted-average effective interest rate	3.16%	3.76%
Maturities of long-term debt
2013	986
2014	1,481
2015	107
2016	994
2017	648
After 2017	1,686
Total	5,902	5,047	106		0			1,034		1,017	850	849	994	992	647	0	592	0	747	747	0	500	349		347	347	348	97	97	59	59		80	91	986	563
Floating rate note payments due in 2013	132
Floating rate note payments due in 2014	$ 97

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Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Significant Accounting Policies

Consolidation

Consolidation: 3M is a diversified global manufacturer, technology innovator and marketer of a wide variety of products. All subsidiaries are consolidated. All significant intercompany transactions are eliminated. As used herein, the term “3M” or “Company” refers to 3M Company and subsidiaries unless the context indicates otherwise.

Foreign currency translation

Foreign currency translation: Local currencies generally are considered the functional currencies outside the United States. Assets and liabilities for operations in local-currency environments are translated at year-end exchange rates. Income and expense items are translated at average rates of exchange prevailing during the year. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders' equity.

Although local currencies are typically considered as the functional currencies outside the United States, under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, the reporting currency of a foreign entity's parent is assumed to be that entity's functional currency when the economic environment of a foreign entity is highly inflationary—generally when its cumulative inflation is approximately 100 percent or more for the three years that precede the beginning of a reporting period. 3M has a subsidiary in Venezuela with operating income representing less than 1.0 percent of 3M's consolidated operating income for 2012. 3M determined that the cumulative inflation rate of Venezuela in November 2009 and since has exceeded 100 percent. Accordingly, the financial statements of the Venezuelan subsidiary were remeasured as if its functional currency were that of its parent beginning January 1, 2010.

Regulations in Venezuela require the purchase and sale of foreign currency to be made at official rates of exchange that are fixed from time to time by the Venezuelan government. Certain laws in the country, however, provided an exemption for the purchase and sale of certain securities and resulted in an indirect “parallel” market through which companies obtained foreign currency without having to purchase it from Venezuela's Commission for the Administration of Foreign Exchange (CADIVI). In May 2010, the Venezuelan government took control of the previously freely-traded parallel market. The government-controlled rate that emerged under the new Transaction System for Foreign Currency Denominated Securities (SITME) is not as unfavorable as the previous parallel rate in comparison to the official rates. As previously disclosed, as of December 31, 2009 (prior to the change in functional currency of 3M's Venezuelan subsidiary in January 2010), 3M changed to use of the parallel exchange rate for translation of the financial statements of its Venezuelan subsidiary. Beginning January 1, 2010, as discussed above, the financial statements of the Venezuelan subsidiary are remeasured as if its functional currency were that of its parent. This remeasurement utilized the parallel rate through May 2010 and the SITME rate thereafter.

The Company continues to monitor circumstances relative to its Venezuelan subsidiary. Other factors notwithstanding, the change in functional currency of this subsidiary and associated remeasurement beginning January 1, 2010 as a result of Venezuela's economic environment decreased net sales of the Venezuelan subsidiary by approximately two-thirds in 2010 in comparison to 2009 (based on exchange rates at 2009 year-end), but did not otherwise have a material impact on operating income and 3M's consolidated results of operations.

Reclassifications

Reclassifications: Certain amounts in the prior years' consolidated financial statements have been reclassified to conform to the current year presentation.

Use of estimates

Use of estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.

Cash and cash equivalents

Cash and cash equivalents: Cash and cash equivalents consist of cash and temporary investments with maturities of three months or less when acquired.

Marketable securities

Marketable securities: The classification of marketable securities as current or non-current is dependent upon management's intended holding period, the security's maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. 3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders' equity. Such an unrealized loss does not reduce net income for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.

Investments

Investments: Investments primarily include equity method, cost method, and available-for-sale equity investments. Available-for-sale investments are recorded at fair value. Unrealized gains and losses relating to investments classified as available-for-sale are recorded as a component of accumulated other comprehensive income (loss) in shareholders' equity.

Other assets

Other assets: Other assets include deferred income taxes, product and other insurance receivables, the cash surrender value of life insurance policies, and other long-term assets. Investments in life insurance are reported at the amount that could be realized under contract at the balance sheet date, with any changes in cash surrender value or contract value during the period accounted for as an adjustment of premiums paid. Cash outflows and inflows associated with life insurance activity are included in “Purchases of marketable securities and investments” and “Proceeds from sale of marketable securities and investments,” respectively.

Inventories

Inventories: Inventories are stated at the lower of cost or market, with cost generally determined on a first-in, first-out basis.

Property, plant and equipment

Property, plant and equipment: Property, plant and equipment, including capitalized interest and internal engineering costs, are recorded at cost. Depreciation of property, plant and equipment generally is computed using the straight-line method based on the estimated useful lives of the assets. The estimated useful lives of buildings and improvements primarily range from 10 to 40 years, with the majority in the range of 20 to 40 years. The estimated useful lives of machinery and equipment primarily range from three to 15 years, with the majority in the range of five to 10 years. Fully depreciated assets are retained in property and accumulated depreciation accounts until disposal. Upon disposal, assets and related accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposal, is charged or credited to operations. Property, plant and equipment amounts are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss would be recognized when the carrying amount of an asset exceeds the estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. The amount of the impairment loss recorded is calculated by the excess of the asset's carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis.

Conditional asset retirement obligations

Conditional asset retirement obligations: A liability is initially recorded at fair value for an asset retirement obligation associated with the retirement of tangible long-lived assets in the period in which it is incurred if a reasonable estimate of fair value can be made. Conditional asset retirement obligations exist for certain long-term assets of the Company. The obligation is initially measured at fair value using expected present value techniques. Over time the liabilities are accreted for the change in their present value and the initial capitalized costs are depreciated over the remaining useful lives of the related assets. The asset retirement obligation liability was $86 million and $79 million at December 31, 2012 and 2011, respectively.

Goodwill

Goodwill: Goodwill is the excess of cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination. Goodwill is not amortized. Goodwill is tested for impairment annually in the fourth quarter of each year, and is tested for impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amount may be impaired. Impairment testing for goodwill is done at a reporting unit level, with all goodwill assigned to a reporting unit. Reporting units are one level below the business segment level, but can be combined when reporting units within the same segment have similar economic characteristics. 3M did not combine any of its reporting units for impairment testing. An impairment loss generally would be recognized when the carrying amount of the reporting unit's net assets exceeds the estimated fair value of the reporting unit. The estimated fair value of a reporting unit is determined using earnings for the reporting unit multiplied by a price/earnings ratio for comparable industry groups, or by using a discounted cash flow analysis.

Intangible assets

Intangible assets: Intangible assets include patents, tradenames and other intangible assets acquired from an independent party. Intangible assets with an indefinite life, namely certain tradenames, are not amortized. Intangible assets with a definite life are amortized over a period ranging from one to 20 years generally on a straight line basis, unless another systematic and rational basis is more representative of the asset's use. Indefinite-lived intangible assets are tested for impairment annually, and are tested for impairment between annual tests if an event occurs or circumstances change that would indicate that the carrying amount may be impaired. Intangible assets with a definite life are tested for impairment whenever events or circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss is recognized when the carrying amount of an asset exceeds the estimated undiscounted cash flows used in determining the fair value of the asset. The amount of the impairment loss recorded is calculated by the excess of the asset's carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis. Costs related to internally developed intangible assets, such as patents, are expensed as incurred, primarily in “Research, development and related expenses.”

Restructuring actions

Restructuring actions: Restructuring actions generally include significant actions involving employee-related severance charges, contract termination costs, and impairment of assets associated with such actions. Employee-related severance charges are largely based upon distributed employment policies and substantive severance plans. These charges are reflected in the quarter when the actions are probable and the amounts are estimable, which typically is when management approves the associated actions. Severance amounts for which affected employees were required to render service in order to receive benefits at their termination dates were measured at the date such benefits were communicated to the applicable employees and recognized as expense over the employees' remaining service periods. Contract termination and other charges primarily reflect costs to terminate a contract before the end of its term (measured at fair value at the time the Company provided notice to the counterparty) or costs that will continue to be incurred under the contract for its remaining term without economic benefit to the Company. Asset impairment charges related to intangible assets and property, plant and equipment reflect the excess of the assets' carrying values over their fair values.

Revenue (sales) recognition

Revenue (sales) recognition: The Company sells a wide range of products to a diversified base of customers around the world and has no material concentration of credit risk. Revenue is recognized when the risks and rewards of ownership have substantively transferred to customers. This condition normally is met when the product has been delivered or upon performance of services. The Company records estimated reductions to revenue or records expense for customer and distributor incentives, primarily comprised of rebates and free goods, at the time of the initial sale. These sales incentives are accounted for in accordance with ASC 605, Revenue Recognition. The estimated reductions of revenue for rebates are based on the sales terms, historical experience, trend analysis and projected market conditions in the various markets served. Since the Company serves numerous markets, the rebate programs offered vary across businesses, but the most common incentive relates to amounts paid or credited to customers for achieving defined volume levels or growth objectives. Free goods are accounted for as an expense and recorded in cost of sales. Sales, use, value-added and other excise taxes are not recognized in revenue.

The vast majority of 3M's sales agreements are for standard products and services with customer acceptance occurring upon delivery of the product or performance of the service. However, to a limited extent 3M also enters into agreements that involve multiple elements (such as equipment, installation and service), software, or non-standard terms and conditions.

For non-software multiple-element arrangements, in connection with 3M's adoption on a prospective basis of Accounting Standards Updated (ASU) No. 2009-13, Multiple-Deliverable Revenue Arrangements—a consensus of the FASB Emerging Issues Task Force, to new or materially modified arrangements beginning in 2011, the Company recognizes revenue for delivered elements when they have stand-alone value to the customer, they have been accepted by the customer, and for which there are only customary refund or return rights. Arrangement consideration is allocated to the deliverables by use of the relative selling price method. The selling price used for each deliverable is based on vendor-specific objective evidence (VSOE) if available, third-party evidence (TPE) if VSOE is not available, or estimated selling price if neither VSOE nor TPE is available. Estimated selling price is determined in a manner consistent with that used to establish the price to sell the deliverable on a standalone basis. For applicable pre-existing arrangements, 3M recognizes revenue for delivered elements when the fair values of the undelivered items are known and allocation of consideration to the delivered items is most often based on the residual method. In addition to the preceding conditions under ASU No. 2009-13 and for applicable pre-existing arrangements, equipment revenue is not recorded until the installation has been completed if equipment acceptance is dependent upon installation or if installation is essential to the functionality of the equipment. Installation revenues are not recorded until installation has been completed.

For arrangements (or portions of arrangements) falling within software revenue recognition standards and that do not involve significant production, modification, or customization, revenue for each software or software-related element is recognized when the Company has VSOE of the fair value of all of the undelivered elements and applicable criteria have been met for the delivered elements. When the arrangements involve significant production, modification or customization, long-term construction-type accounting involving proportional performance is generally employed.

For prepaid service contracts, sales revenue is recognized on a straight-line basis over the term of the contract, unless historical evidence indicates the costs are incurred on other than a straight-line basis. License fee revenue is recognized as earned, and no revenue is recognized until the inception of the license term.

On occasion, agreements will contain milestones, or 3M will recognize revenue based on proportional performance. For these agreements, and depending on the specifics, 3M may recognize revenue upon completion of a substantive milestone, or in proportion to costs incurred to date compared with the estimate of total costs to be incurred.

Accounts receivable and allowances

Accounts receivable and allowances: Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains allowances for bad debts, cash discounts, product returns and various other items. The allowance for doubtful accounts and product returns is based on the best estimate of the amount of probable credit losses in existing accounts receivable and anticipated sales returns. The Company determines the allowances based on historical write-off experience by industry and regional economic data and historical sales returns. The Company reviews the allowance for doubtful accounts monthly. The Company does not have any significant off-balance-sheet credit exposure related to its customers.

Advertising and merchandising

Advertising and merchandising: These costs are charged to operations in the period incurred, and totaled $482 million in 2012, $518 million in 2011 and $512 million in 2010.

Research, development and related expenses

Research, development and related expenses: These costs are charged to operations in the period incurred and are shown on a separate line of the Consolidated Statement of Income. Research, development and related expenses totaled $1.634 billion in 2012, $1.570 billion in 2011 and $1.434 billion in 2010. Research and development expenses, covering basic scientific research and the application of scientific advances in the development of new and improved products and their uses, totaled $1.079 billion in 2012, $1.036 billion in 2011 and $919 million in 2010. Related expenses primarily include technical support provided by 3M to customers who are using existing 3M products; internally developed patent costs, which include costs and fees incurred to prepare, file, secure and maintain patents; and amortization of acquired patents.

Internal-use software

Internal-use software: The Company capitalizes direct costs of materials and services used in the development of internal-use software. Amounts capitalized are amortized over a period of three to seven years, generally on a straight-line basis, unless another systematic and rational basis is more representative of the software's use. Amounts are reported as a component of either machinery and equipment or capital leases within property, plant and equipment.

Environmental

Environmental: Environmental expenditures relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed. Reserves for liabilities related to anticipated remediation costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company's commitment to a plan of action. Environmental expenditures for capital projects that contribute to current or future operations generally are capitalized and depreciated over their estimated useful lives.

Income taxes

Income taxes: The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of December 31, 2012 and 2011, the Company recorded $29 million and $82 million, respectively, of valuation allowances. The Company recognizes and measures its uncertain tax positions based on the rules under ASC 740, Income Taxes.

Earnings per share

Earnings per share: The difference in the weighted average 3M shares outstanding for calculating basic and diluted earnings per share attributable to 3M common shareholders is the result of the dilution associated with the Company's stock-based compensation plans. Certain options outstanding under these stock-based compensation plans during the years 2012, 2011 and 2010 were not included in the computation of diluted earnings per share attributable to 3M common shareholders because they would not have had a dilutive effect (12.6 million average options for 2012, 17.4 million average options for 2011, and 26.3 million average options for 2010). The computations for basic and diluted earnings per share for the years ended December 31 follow:

Earnings Per Share Computations
(Amounts in millions, except per share amounts)			2012		2011		2010
Numerator:
	Net income attributable to 3M		$	4,444	$	4,283	$	4,085
Denominator:
	Denominator for weighted average 3M common shares
		outstanding – basic		693.9		708.5		713.7
	Dilution associated with the Company’s stock-based
		compensation plans		9.4		10.5		11.8
	Denominator for weighted average 3M common shares
		outstanding – diluted		703.3		719.0		725.5
Earnings per share attributable to 3M common shareholders – basic			$	6.40	$	6.05	$	5.72
Earnings per share attributable to 3M common shareholders – diluted			$	6.32	$	5.96	$	5.63

Stock-based compensation

Stock-based compensation: The Company recognizes compensation expense for its stock-based compensation programs, which include stock options, restricted stock, restricted stock units, performance shares, and the General Employees' Stock Purchase Plan (GESPP). Under applicable accounting standards, the fair value of share-based compensation is determined at the grant date and the recognition of the related expense is recorded over the period in which the share-based compensation vests. Refer to Note 14 for additional information.

Comprehensive income

Comprehensive income: Total comprehensive income and the components of accumulated other comprehensive income (loss) are presented in the Consolidated Statement of Comprehensive Income and the Consolidated Statement of Changes in Equity. Accumulated other comprehensive income (loss) is composed of foreign currency translation effects (including hedges of net investments in international companies), defined benefit pension and postretirement plan adjustments, unrealized gains and losses on available-for-sale debt and equity securities, and unrealized gains and losses on cash flow hedging instruments.

Derivatives and hedging activities

Derivatives and hedging activities: All derivative instruments within the scope of ASC 815, Derivatives and Hedging, are recorded on the balance sheet at fair value. The Company uses interest rate swaps, currency and commodity price swaps, and foreign currency forward and option contracts to manage risks generally associated with foreign exchange rate, interest rate and commodity market volatility. All hedging instruments that qualify for hedge accounting are designated and effective as hedges, in accordance with U.S. generally accepted accounting principles. If the underlying hedged transaction ceases to exist, all changes in fair value of the related derivatives that have not been settled are recognized in current earnings. Instruments that do not qualify for hedge accounting are marked to market with changes recognized in current earnings. Cash flows from derivative instruments are classified in the statement of cash flows in the same category as the cash flows from the items subject to designated hedge or undesignated (economic) hedge relationships. The Company does not hold or issue derivative financial instruments for trading purposes and is not a party to leveraged derivatives.

Credit risk

Credit risk: The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company’s risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. 3M enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between a 3M entity and the counterparty as a result of multiple, separate derivative transactions. The Company does not anticipate nonperformance by any of these counterparties. 3M has elected to present the fair value of derivative assets and liabilities within the Company’s consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation.

Fair value measurements

Fair value measurements: 3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include 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, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Acquisitions

Acquisitions: The Company accounts for business acquisitions in accordance with ASC 805, Business Combinations. This standard requires the acquiring entity in a business combination to recognize all (and only) the assets acquired and liabilities assumed in the transaction and establishes the acquisition-date fair value as the measurement objective for all assets acquired and liabilities assumed in a business combination. Certain provisions of this standard prescribe, among other things, the determination of acquisition-date fair value of consideration paid in a business combination (including contingent consideration) and the exclusion of transaction and acquisition-related restructuring costs from acquisition accounting.

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Pension and Postretirement Benefit Plans (Details 4) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
United States Qualified and Non-qualified Pension Benefits
Future Pension and Postretirement Benefit Payments
2013 Benefit Payments	$ 760
2014 Benefit Payments	784
2015 Benefit Payments	808
2016 Benefit Payments	831
2017 Benefit Payments	854
Following five years	4,566
International Qualified and Non-qualified Pension Benefits
Future Pension and Postretirement Benefit Payments
2013 Benefit Payments	211
2014 Benefit Payments	223
2015 Benefit Payments	236
2016 Benefit Payments	248
2017 Benefit Payments	256
Following five years	1,463
Postretirement Benefits
Future Pension and Postretirement Benefit Payments
2013 Benefit Payments	113
2014 Benefit Payments	126
2015 Benefit Payments	138
2016 Benefit Payments	153
2017 Benefit Payments	154
Following five years	$ 787

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Derivatives (Tables)

12 Months Ended

Dec. 31, 2012

Derivatives

Gain (loss) on derivative instruments designated as cash flow hedges

Year Ended December 31, 2012
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(35)	Cost of sales	$	41	Cost of sales	$	―
Foreign currency forward contracts		29	Interest expense		29	Interest expense		―
Commodity price swap contracts		(4)	Cost of sales		(10)	Cost of sales		―
Interest rate swap contracts		―	Interest expense		(1)	Interest expense		―
Total	$	(10)		$	59		$	―
Year Ended December 31, 2011
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	3	Cost of sales	$	(87)	Cost of sales	$	―
Foreign currency forward contracts		(42)	Interest expense		(41)	Interest expense		―
Commodity price swap contracts		(4)	Cost of sales		(6)	Cost of sales		―
Interest rate swap contracts		(7)	Interest expense		―	Interest expense		―
Total	$	(50)		$	(134)		$	―
Year Ended December 31, 2010
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(30)	Cost of sales	$	(39)	Cost of sales	$	―
Foreign currency forward contracts		34	Interest expense		33	Interest expense		―
Commodity price swap contracts		(13)	Cost of sales		(9)	Cost of sales		―
Total	$	(9)		$	(15)		$	―

Gain (loss) on derivative instruments designated as fair value hedges

Year ended December 31, 2012	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(5)	Interest expense	$	5
Total		$	(5)		$	5
Year ended December 31, 2011	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(10)	Interest expense	$	10
Total		$	(10)		$	10
Year ended December 31, 2010	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(16)	Interest expense	$	16
Total		$	(16)		$	16

Gain (loss) on derivative and non-derivative instruments designated as net investment hedges

Year ended December 31, 2012
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(29)	N/A	$	―
Total	$	(29)		$	―
Year ended December 31, 2011
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	41	N/A	$	―
Total	$	41		$	―
Year ended December 31, 2010
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	111	N/A	$	―
Total	$	111		$	―

Gain (loss) on derivative instruments not designated as hedging instruments

Derivatives Not Designated as Hedging Instruments	Year ended December 31, 2012			Year ended December 31, 2011
	Gain (Loss) on Derivative Recognized in Income			Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24)	Cost of sales	$	13
Foreign currency forward contracts	Interest expense		22	Interest expense		9
Total		$	(2)		$	22
Derivatives Not Designated as Hedging Instruments	Year ended December 31, 2010
	Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24)
Foreign currency forward contracts	Interest expense		(19)
Commodity price swap contracts	Cost of sales		1
Total		$	(42)

Location and Fair Value of Derivative Instruments

December 31, 2012
(Millions)		Assets			Liabilities
Fair Value of Derivative Instruments		Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	39	Other current liabilities	$	85
Commodity price swap contracts		Other current assets		―	Other current liabilities		1
Interest rate swap contracts		Other assets		23	Other liabilities		―
Total derivatives designated as
	hedging instruments		$	62		$	86
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	10	Other current liabilities	$	20
Total derivatives not designated as
	hedging instruments		$	10		$	20
Total derivative instruments			$	72		$	106
December 31, 2011
(Millions)		Assets			Liabilities
Fair Value of Derivative Instruments		Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	82	Other current liabilities	$	34
Commodity price swap contracts		Other current assets		―	Other current liabilities		7
Interest rate swap contracts		Other assets		28	Other liabilities		―
Total derivatives designated as
	hedging instruments		$	110		$	41
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	25	Other current liabilities	$	8
Total derivatives not designated as
	hedging instruments		$	25		$	8
Total derivative instruments			$	135		$	49

Offsetting Assets

Offsetting of Financial Assets/Liabilities under Master Netting Agreements with Derivative Counterparties
December 31, 2012
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	67	$	25	$	―	$	42
Derivatives not subject to master netting agreements		5						5
Total	$	72					$	47

December 31, 2011
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	101	$	14	$	―	$	87
Derivatives not subject to master netting agreements		34						34
Total	$	135					$	121

Offsetting Liabilities

December 31, 2012
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	106	$	25	$	―	$	81
Derivatives not subject to master netting agreements		―						―
Total	$	106					$	81

December 31, 2011
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	43	$	14	$	―	$	29
Derivatives not subject to master netting agreements		6						6
Total	$	49					$	35

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Derivatives

12 Months Ended

Dec. 31, 2012

Derivatives

Derivatives

NOTE 11. Derivatives

The Company uses interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts to manage risks generally associated with foreign exchange rate, interest rate and commodity price fluctuations. The information that follows explains the various types of derivatives and financial instruments used by 3M, how and why 3M uses such instruments, how such instruments are accounted for, and how such instruments impact 3M's financial position and performance.

Additional information with respect to the impacts on other comprehensive income of nonderivative hedging and derivative instruments is included in Note 5. Additional information with respect to the fair value of derivative instruments is included in Note 12. References to information regarding derivatives and/or hedging instruments associated with the Company's long-term debt are also made in Note 9.

Types of Derivatives/Hedging Instruments and Inclusion in Income/Other Comprehensive Income

Cash Flow Hedges:

For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income and reclassified into earnings in the same period during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings.

Cash Flow Hedging - Foreign Currency Forward and Option Contracts: The Company enters into foreign exchange forward and option contracts to hedge against the effect of exchange rate fluctuations on cash flows denominated in foreign currencies and certain intercompany financing transactions. These transactions are designated as cash flow hedges. The settlement or extension of these derivatives will result in reclassifications (from accumulated other comprehensive income) to earnings in the period during which the hedged transactions affect earnings. Generally, 3M dedesignates these cash flow hedge relationships in advance of the occurrence of the forecasted transaction. The portion of gains or losses on the derivative instrument previously accumulated in other comprehensive income for dedesignated hedges remains in accumulated other comprehensive income until the forecasted transaction occurs. Changes in the value of derivative instruments after dedesignation are recorded in earnings and are included in the Derivatives Not Designated as Hedging Instruments section below. Hedge ineffectiveness and the amount excluded from effectiveness testing recognized in income on cash flow hedges were not material for 2012, 2011 and 2010. The maximum length of time over which 3M hedges its exposure to the variability in future cash flows for a majority of the forecasted transactions is 12 months and, accordingly, at December 31, 2012, the majority of the Company's open foreign exchange forward and option contracts had maturities of one year or less. The dollar equivalent gross notional amount of the Company's foreign exchange forward and option contracts designated as cash flow hedges at December 31, 2012 was approximately $5.8 billion.

Cash Flow Hedging - Commodity Price Management: The Company manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts. The Company uses commodity price swaps relative to natural gas as cash flow hedges of forecasted transactions to manage price volatility. The related mark-to-market gain or loss on qualifying hedges is included in other comprehensive income to the extent effective, and reclassified into cost of sales in the period during which the hedged transaction affects earnings. Generally, the length of time over which 3M hedges its exposure to the variability in future cash flows for its forecasted natural gas transactions is 12 months. No significant commodity cash flow hedges were discontinued and hedge ineffectiveness was not material for 2012, 2011 and 2010. The dollar equivalent gross notional amount of the Company's natural gas commodity price swaps designated as cash flow hedges at December 31, 2012 was $18 million.

Cash Flow Hedging – Forecasted Debt Issuance:In August 2011, in anticipation of the September 2011 issuance of $1 billion in five-year fixed rate notes, 3M executed a pre-issuance cash flow hedge on a notional amount of $400 million by entering into a forward-starting five-year floating-to-fixed interest rate swap. Upon debt issuance in September 2011, 3M terminated the floating-to-fixed interest rate swap. The termination of the swap resulted in a $7 million pre-tax loss ($4 million after-tax) that will be amortized over the five-year life of the note and, when material, is included in the tables below as part of the loss recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income.

As of December 31, 2012, the Company had a balance of $23 million associated with the after tax net unrealized loss associated with cash flow hedging instruments recorded in accumulated other comprehensive income. This includes a $3 million balance (loss) related to a floating-to-fixed interest rate swap (discussed in the preceding paragraph), which will be amortized over the five-year life of the note. 3M expects to reclassify a majority of the remaining balance to earnings over the next 12 months (with the impact offset by cash flows from underlying hedged items).

The location in the consolidated statements of income and comprehensive income and amounts of gains and losses related to derivative instruments designated as cash flow hedges are provided in the following table. Reclassifications of amounts from accumulated other comprehensive income into income include accumulated gains (losses) on dedesignated hedges at the time earnings are impacted by the forecasted transaction.

Year Ended December 31, 2012
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(35)	Cost of sales	$	41	Cost of sales	$	―
Foreign currency forward contracts		29	Interest expense		29	Interest expense		―
Commodity price swap contracts		(4)	Cost of sales		(10)	Cost of sales		―
Interest rate swap contracts		―	Interest expense		(1)	Interest expense		―
Total	$	(10)		$	59		$	―
Year Ended December 31, 2011
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	3	Cost of sales	$	(87)	Cost of sales	$	―
Foreign currency forward contracts		(42)	Interest expense		(41)	Interest expense		―
Commodity price swap contracts		(4)	Cost of sales		(6)	Cost of sales		―
Interest rate swap contracts		(7)	Interest expense		―	Interest expense		―
Total	$	(50)		$	(134)		$	―
Year Ended December 31, 2010
(Millions)	Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative		Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income			Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income
Derivatives in Cash Flow Hedging Relationships	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(30)	Cost of sales	$	(39)	Cost of sales	$	―
Foreign currency forward contracts		34	Interest expense		33	Interest expense		―
Commodity price swap contracts		(13)	Cost of sales		(9)	Cost of sales		―
Total	$	(9)		$	(15)		$	―

Fair Value Hedges:

For derivative instruments that are designated and qualify as fair value hedges, the gain or loss on the derivatives as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings.

Fair Value Hedging - Interest Rate Swaps: The Company manages interest expense using a mix of fixed and floating rate debt. To help manage borrowing costs, the Company may enter into interest rate swaps. Under these arrangements, the Company agrees to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The mark-to-market of these fair value hedges is recorded as gains or losses in interest expense and is offset by the gain or loss of the underlying debt instrument, which also is recorded in interest expense. These fair value hedges are highly effective and, thus, there is no impact on earnings due to hedge ineffectiveness. The dollar equivalent (based on inception date foreign currency exchange rates) gross notional amount of the Company's interest rate swaps at December 31, 2012 was $342 million.

At December 31, 2012, the Company had interest rate swaps designated as fair value hedges of underlying fixed rate obligations. In July 2007, in connection with the issuance of a seven-year Eurobond for an amount of 750 million Euros, the Company completed a fixed-to-floating interest rate swap on a notional amount of 400 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation. In August 2010, the Company terminated 150 million Euros of the notional amount of this swap. As a result, a gain of 18 million Euros, recorded as part of the balance of the underlying debt, will be amortized as an offset to interest expense over this debt's remaining life. Prior to termination of the applicable portion of the interest rate swap, the mark-to-market of the hedge instrument was recorded as gains or losses in interest expense and was offset by the gain or loss on carrying value of the underlying debt instrument. Consequently, the subsequent amortization of the 18 million Euros recorded as part of the underlying debt balance is not part of gains on hedged items recognized in income in the tables below.

The Company also had two fixed-to-floating interest rate swaps with an aggregate notional amount of $800 million designated as fair value hedges of the fixed interest rate obligation under the $800 million, three-year, 4.50% notes issued in October 2008. These swaps and underlying note matured in the fourth quarter of 2011.

The location in the consolidated statements of income and amounts of gains and losses related to derivative instruments designated as fair value hedges and similar information relative to the hedged items are as follows:

Year ended December 31, 2012	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(5)	Interest expense	$	5
Total		$	(5)		$	5
Year ended December 31, 2011	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(10)	Interest expense	$	10
Total		$	(10)		$	10
Year ended December 31, 2010	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
(Millions)	Recognized in Income			Recognized in Income
Derivatives in Fair Value Hedging Relationships	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(16)	Interest expense	$	16
Total		$	(16)		$	16

Net Investment Hedges:

As circumstances warrant, the Company uses cross currency swaps, forwards and foreign currency denominated debt to hedge portions of the Company's net investments in foreign operations. For hedges that meet the effectiveness requirements, the net gains or losses attributable to changes in spot exchange rates are recorded in cumulative translation within other comprehensive income. The remainder of the change in value of such instruments is recorded in earnings. Recognition in earnings of amounts previously recorded in cumulative translation is limited to circumstances such as complete or substantially complete liquidation of the net investment in the hedged foreign operation. At December 31, 2012, there were no cross currency swaps and foreign currency forward contracts designated as net investment hedges.

In addition to the derivative instruments used as hedging instruments in net investment hedges, 3M also uses foreign currency denominated debt as nonderivative hedging instruments in certain net investment hedges. In July and December 2007, the Company issued seven-year fixed rate Eurobond securities for amounts of 750 million Euros and 275 million Euros, respectively. 3M designated each of these Eurobond issuances as hedging instruments of the Company's net investment in its European subsidiaries.

The location in the consolidated statements of income and comprehensive income and amounts of gains and losses related to derivative and nonderivative instruments designated as net investment hedges are as follows. There were no reclassifications of the effective portion of net investment hedges out of accumulated other comprehensive income into income for the periods presented in the table below.

Year ended December 31, 2012
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(29)	N/A	$	―
Total	$	(29)		$	―
Year ended December 31, 2011
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	41	N/A	$	―
Total	$	41		$	―
Year ended December 31, 2010
Derivative and Nonderivative Instruments in Net Investment Hedging Relationships	Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument		Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	111	N/A	$	―
Total	$	111		$	―

Derivatives Not Designated as Hedging Instruments:

Derivatives not designated as hedging instruments include dedesignated foreign currency forward and option contracts that formerly were designated in cash flow hedging relationships (as referenced in the Cash Flow Hedges section above). In addition, 3M enters into foreign currency forward contracts and commodity price swaps to offset, in part, the impacts of certain intercompany activities (primarily associated with intercompany licensing arrangements) and fluctuations in costs associated with the use of certain precious metals, respectively. These derivative instruments are not designated in hedging relationships; therefore, fair value gains and losses on these contracts are recorded in earnings. The dollar equivalent gross notional amount of these forward, option and swap contracts not designated as hedging instruments totaled $1.0 billion as of December 31, 2012. The Company does not hold or issue derivative financial instruments for trading purposes.

The location in the consolidated statements of income and amounts of gains and losses related to derivative instruments not designated as hedging instruments are as follows:

Derivatives Not Designated as Hedging Instruments	Year ended December 31, 2012			Year ended December 31, 2011
	Gain (Loss) on Derivative Recognized in Income			Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24)	Cost of sales	$	13
Foreign currency forward contracts	Interest expense		22	Interest expense		9
Total		$	(2)		$	22
Derivatives Not Designated as Hedging Instruments	Year ended December 31, 2010
	Gain (Loss) on Derivative Recognized in Income
(Millions)	Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	(24)
Foreign currency forward contracts	Interest expense		(19)
Commodity price swap contracts	Cost of sales		1
Total		$	(42)

Location and Fair Value Amount of Derivative Instruments

The following tables summarize the fair value of 3M's derivative instruments, excluding nonderivative instruments used as hedging instruments, and their location in the consolidated balance sheet.Additional information with respect to the fair value of derivative instruments is included in Note 12.

December 31, 2012
(Millions)		Assets			Liabilities
Fair Value of Derivative Instruments		Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	39	Other current liabilities	$	85
Commodity price swap contracts		Other current assets		―	Other current liabilities		1
Interest rate swap contracts		Other assets		23	Other liabilities		―
Total derivatives designated as
	hedging instruments		$	62		$	86
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	10	Other current liabilities	$	20
Total derivatives not designated as
	hedging instruments		$	10		$	20
Total derivative instruments			$	72		$	106
December 31, 2011
(Millions)		Assets			Liabilities
Fair Value of Derivative Instruments		Location	Amount		Location	Amount
Derivatives designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	82	Other current liabilities	$	34
Commodity price swap contracts		Other current assets		―	Other current liabilities		7
Interest rate swap contracts		Other assets		28	Other liabilities		―
Total derivatives designated as
	hedging instruments		$	110		$	41
Derivatives not designated as hedging instruments
Foreign currency forward/option contracts		Other current assets	$	25	Other current liabilities	$	8
Total derivatives not designated as
	hedging instruments		$	25		$	8
Total derivative instruments			$	135		$	49

Credit Risk and Offsetting of Assets and Liabilities of Derivative Instruments

The Company is exposed to credit loss in the event of nonperformance by counterparties in interest rate swaps, currency swaps, commodity price swaps, and forward and option contracts. However, the Company's risk is limited to the fair value of the instruments. The Company actively monitors its exposure to credit risk through the use of credit approvals and credit limits, and by selecting major international banks and financial institutions as counterparties. 3M enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between a 3M entity and the counterparty as a result of multiple, separate derivative transactions. As of December 31, 2012, 3M has International Swaps and Derivatives Association (ISDA) agreements with eight applicable banks and financial institutions which contain netting provisions. In addition to a master agreement with 3M supported by a primary counterparty's parent guarantee, 3M also has associated credit support agreements in place with six of its primary derivative counterparties which, among other things, provide the circumstances under which either party is required to post eligible collateral (when the market value of transactions covered by these agreements exceeds specified thresholds or if a counterparty's credit rating has been downgraded to a predetermined rating). The Company does not anticipate nonperformance by any of these counterparties.

3M has elected to present the fair value of derivative assets and liabilities within the Company's consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation. However, the following tables provide information as if the Company had elected to offset the asset and liability balances of derivative instruments, netted in accordance with various criteria in the event of default or termination as stipulated by the terms of netting arrangements with each of the counterparties. For each counterparty, if netted, the Company would offset the asset and liability balances of all derivatives at the end of the reporting period based on the 3M entity that is a party to the transactions. Derivatives not subject to master netting agreements are not eligible for net presentation. As of the applicable dates presented below, no cash collateral had been received or pledged related to these derivative instruments.

Offsetting of Financial Assets/Liabilities under Master Netting Agreements with Derivative Counterparties
December 31, 2012
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	67	$	25	$	―	$	42
Derivatives not subject to master netting agreements		5						5
Total	$	72					$	47

December 31, 2012
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	106	$	25	$	―	$	81
Derivatives not subject to master netting agreements		―						―
Total	$	106					$	81

December 31, 2011
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Liabilities		Cash Collateral Received		Net Amount of Derivative Assets
Derivatives subject to master netting agreements	$	101	$	14	$	―	$	87
Derivatives not subject to master netting agreements		34						34
Total	$	135					$	121

December 31, 2011
				Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements
(Millions)		Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet		Gross Amount of Eligible Offsetting Recognized Derivative Assets		Cash Collateral Pledged		Net Amount of Derivative Liabilities
Derivatives subject to master netting agreements	$	43	$	14	$	―	$	29
Derivatives not subject to master netting agreements		6						6
Total	$	49					$	35

Currency Effects

Currency Effects: 3M estimates that year-on-year currency effects, including hedging impacts, decreased net income attributable to 3M by approximately $103 million in 2012 and increased net income attributable to 3M by approximately $154 million in 2011. These estimates include the effect of translating profits from local currencies into U.S. dollars; the impact of currency fluctuations on the transfer of goods between 3M operations in the United States and abroad; and transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of swapping Venezuelan bolivars into U.S. dollars. 3M estimates that year-on-year derivative and other transaction gains and losses increased net income attributable to 3M by approximately $49 million in 2012 and had an immaterial impact on net income attributable to 3M in 2011.

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Quarterly Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Quarterly Data (Unaudited)
Net sales	$ 7,387	$ 7,497	$ 7,534	$ 7,486	$ 7,089	$ 7,531	$ 7,680	$ 7,311	$ 29,904	$ 29,611	$ 26,662
Cost of sales	3,991	3,935	3,870	3,889	3,824	4,027	4,040	3,802	15,685	15,693	13,831
Net income including noncontrolling interest	1,004	1,180	1,186	1,141	974	1,103	1,177	1,103	4,511	4,357	4,163
Net income attributable to 3M	$ 991	$ 1,161	$ 1,167	$ 1,125	$ 954	$ 1,088	$ 1,160	$ 1,081	$ 4,444	$ 4,283	$ 4,085
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$ 1.43	$ 1.68	$ 1.68	$ 1.61	$ 1.36	$ 1.54	$ 1.63	$ 1.52	$ 6.40	$ 6.05	$ 5.72
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$ 1.41	$ 1.65	$ 1.66	$ 1.59	$ 1.35	$ 1.52	$ 1.60	$ 1.49	$ 6.32	$ 5.96	$ 5.63