10-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2018

Commission file number:  1-3285

3M COMPANY

(Exact name of registrant as specified in its charter)

DELAWARE	41-0417775
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)
3M Center, St. Paul, Minnesota	55144
(Address of principal executive offices)	(Zip Code)

(651) 733-1110

(Registrant’s telephone number, including area code)

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

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

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

Large accelerated filer ☒	Accelerated filer ☐
Non-accelerated filer ☐ (Do not check if a smaller reporting company)	Smaller reporting company ☐
	Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for

complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐  No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding at June 30, 2018
Common Stock, $0.01 par value per share	586,613,476 shares

      3M COMPANY

   Form 10-Q for the Quarterly Period Ended June 30, 2018

	TABLE OF CONTENTS	BEGINNING PAGE
PART I	FINANCIAL INFORMATION
ITEM 1.	Financial Statements
	Index to Financial Statements:
	Consolidated Statement of Income	3
	Consolidated Statement of Comprehensive Income	4
	Consolidated Balance Sheet	5
	Consolidated Statement of Cash Flows	6
	Notes to Consolidated Financial Statements
	Note 1. Significant Accounting Policies	7
	Note 2. Revenue	13
	Note 3. Acquisitions and Divestitures	16
	Note 4. Goodwill and Intangible Assets	17
	Note 5. Restructuring Actions and Exit Activities	19
	Note 6. Supplemental Income Statement Information	20
	Note 7. Supplemental Equity and Comprehensive Income Information	20
	Note 8. Income Taxes	24
	Note 9. Marketable Securities	26
	Note 10. Long-Term Debt and Short-Term Borrowings	26
	Note 11. Pension and Postretirement Benefit Plans	27
	Note 12. Derivatives	28
	Note 13. Fair Value Measurements	34
	Note 14. Commitments and Contingencies	37
	Note 15. Stock-Based Compensation	46
	Note 16. Business Segments	50
	Report of Independent Registered Public Accounting Firm	52
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations
	Index to Management’s Discussion and Analysis:
	Overview	53
	Results of Operations	60
	Performance by Business Segment	65
	Financial Condition and Liquidity	72
	Cautionary Note Concerning Factors That May Affect Future Results	78
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk	78
ITEM 4.	Controls and Procedures	79
PART II	OTHER INFORMATION
ITEM 1.	Legal Proceedings	80
ITEM 1A.	Risk Factors	80
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	82
ITEM 3.	Defaults Upon Senior Securities	83
ITEM 4.	Mine Safety Disclosures	83
ITEM 5.	Other Information	83
ITEM 6.	Exhibits	83

2

3M COMPANY

FORM 10-Q

For the Quarterly Period Ended June 30, 2018

PART I.  Financial Information

Item 1.  Financial Statements.

3M Company and Subsidiaries

Consolidated Statement of Income

(Unaudited)

	Three months ended				Six months ended
	June 30,				June 30,
(Millions, except per share amounts)	2018		2017		2018		2017
Net sales	$	8,390	$	7,810	$	16,668	$	15,495
Operating expenses
Cost of sales		4,227		4,020		8,463		7,902
Selling, general and administrative expenses		1,800		1,620		4,373		3,234
Research, development and related expenses		468		478		954		954
Gain on sale of businesses		(506)		(461)		(530)		(490)
Total operating expenses		5,989		5,657		13,260		11,600
Operating income		2,401		2,153		3,408		3,895
Other expense (income), net		51		11		93		16
Income before income taxes		2,350		2,142		3,315		3,879
Provision for income taxes		488		557		847		968
Net income including noncontrolling interest	$	1,862	$	1,585	$	2,468	$	2,911
Less: Net income attributable to noncontrolling interest		5		2		9		5
Net income attributable to 3M	$	1,857	$	1,583	$	2,459	$	2,906
Weighted average 3M common shares outstanding — basic		591.4		598.1		593.8		598.1
Earnings per share attributable to 3M common shareholders — basic	$	3.14	$	2.65	$	4.14	$	4.86
Weighted average 3M common shares outstanding — diluted		604.2		612.8		608.5		612.4
Earnings per share attributable to 3M common shareholders — diluted	$	3.07	$	2.58	$	4.04	$	4.74
Cash dividends paid per 3M common share	$	1.36	$	1.175	$	2.72	$	2.35

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

3

3M Company and Subsidiaries

Consolidated Statement of Comprehensive Income

(Unaudited)

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Net income including noncontrolling interest	$	1,862	$	1,585	$	2,468	$	2,911
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(496)		(67)		(329)		225
Defined benefit pension and postretirement plans adjustment		114		78		230		161
Cash flow hedging instruments, unrealized gain (loss)		162		(51)		101		(127)
Total other comprehensive income (loss), net of tax		(220)		(40)		2		259
Comprehensive income (loss) including noncontrolling interest		1,642		1,545		2,470		3,170
Comprehensive (income) loss attributable to noncontrolling interest		(1)		(2)		(4)		(8)
Comprehensive income (loss) attributable to 3M	$	1,641	$	1,543	$	2,466	$	3,162

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

4

3M Company and Subsidiaries

Consolidated Balance Sheet

(Unaudited)

	June 30,		December 31,
(Dollars in millions, except per share amount)	2018		2017
Assets
Current assets
Cash and cash equivalents	$	2,801	$	3,053
Marketable securities — current		385		1,076
Accounts receivable — net		5,383		4,911
Inventories
Finished goods		1,979		1,915
Work in process		1,292		1,218
Raw materials and supplies		967		901
Total inventories		4,238		4,034
Prepaids		713		937
Other current assets		370		266
Total current assets		13,890		14,277
Property, plant and equipment		24,758		24,914
Less: Accumulated depreciation		(16,113)		(16,048)
Property, plant and equipment — net		8,645		8,866
Goodwill		10,107		10,513
Intangible assets — net		2,787		2,936
Other assets		1,349		1,395
Total assets	$	36,778	$	37,987
Liabilities
Current liabilities
Short-term borrowings and current portion of long-term debt	$	3,225	$	1,853
Accounts payable		1,871		1,945
Accrued payroll		646		870
Accrued income taxes		293		310
Other current liabilities		2,867		2,709
Total current liabilities		8,902		7,687
Long-term debt		11,294		12,096
Pension and postretirement benefits		3,254		3,620
Other liabilities		2,900		2,962
Total liabilities	$	26,350	$	26,365
Commitments and contingencies (Note 14)
Equity
3M Company shareholders’ equity:
Common stock par value, $.01 par value; 944,033,056 shares issued	$	9	$	9
Additional paid-in capital		5,550		5,352
Retained earnings		39,442		39,115
Treasury stock, at cost: 357,419,580 shares at June 30, 2018;    349,148,819 shares at December 31, 2017		(27,617)		(25,887)
Accumulated other comprehensive income (loss)		(7,019)		(7,026)
Total 3M Company shareholders’ equity		10,365		11,563
Noncontrolling interest		63		59
Total equity	$	10,428	$	11,622
Total liabilities and equity	$	36,778	$	37,987

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

5

3M Company and Subsidiaries

Consolidated Statement of Cash Flows

(Unaudited)

	Six months ended
	June 30,
(Millions)	2018		2017
Cash Flows from Operating Activities
Net income including noncontrolling interest	$	2,468	$	2,911
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization		762		818
Company pension and postretirement contributions		(261)		(279)
Company pension and postretirement expense		204		163
Stock-based compensation expense		208		206
Gain on sale of businesses		(530)		(490)
Deferred income taxes		(1)		(120)
Changes in assets and liabilities
Accounts receivable		(606)		(412)
Inventories		(337)		(347)
Accounts payable		(12)		(60)
Accrued income taxes (current and long-term)		234		257
Other — net		(87)		(17)
Net cash provided by operating activities		2,042		2,630
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)		(669)		(589)
Proceeds from sale of PP&E and other assets		96		13
Acquisitions, net of cash acquired		13		—
Purchases of marketable securities and investments		(964)		(407)
Proceeds from maturities and sale of marketable securities and investments		1,636		543
Proceeds from sale of businesses, net of cash sold		806		862
Other — net		(11)		5
Net cash provided by investing activities		907		427
Cash Flows from Financing Activities
Change in short-term debt — net		774		(113)
Repayment of debt (maturities greater than 90 days)		(6)		(650)
Proceeds from debt (maturities greater than 90 days)		6		—
Purchases of treasury stock		(2,537)		(1,184)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans		305		496
Dividends paid to shareholders		(1,612)		(1,403)
Other — net		(26)		(2)
Net cash used in financing activities		(3,096)		(2,856)
Effect of exchange rate changes on cash and cash equivalents		(105)		55
Net increase (decrease) in cash and cash equivalents		(252)		256
Cash and cash equivalents at beginning of year		3,053		2,398
Cash and cash equivalents at end of period	$	2,801	$	2,654

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

6

3M Company and Subsidiaries

Notes to Consolidated Financial Statements

(Unaudited)

NOTE 1.  Significant Accounting Policies

Basis of Presentation

The interim consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for a fair statement of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. These adjustments consist of normal, recurring items. The results of operations for any interim period are not necessarily indicative of results for the full year. The interim consolidated financial statements and notes are presented as permitted by the requirements for Quarterly Reports on Form 10-Q. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes included in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

As described in the “New Accounting Pronouncements” section, the Company adopted Accounting Standards Update (ASU) No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. This ASU changed how 3M presents net periodic benefit cost within its consolidated statement of income, as reflected in the table that follows. The financial information presented herein reflects these impacts for all periods presented.

Three months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	7,810	$	7,810	$	—
Operating expenses
Cost of sales		4,007		4,020		13
Selling, general and administrative expenses		1,607		1,620		13
Research, development and related expenses		473		478		5
Gain on sale of businesses		(461)		(461)		—
Total operating expenses		5,626		5,657		31
Operating income	$	2,184	$	2,153	$	(31)
Other expense (income), net	$	42	$	11	$	(31)
Income before income taxes	$	2,142	$	2,142	$	—

Six months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	15,495	$	15,495	$	—
Operating expenses
Cost of sales		7,876		7,902		26
Selling, general and administrative expenses		3,207		3,234		27
Research, development and related expenses		944		954		10
Gain on sale of businesses		(490)		(490)		—
Total operating expenses		11,537		11,600		63
Operating income	$	3,958	$	3,895	$	(63)
Other expense (income), net	$	79	$	16	$	(63)
Income before income taxes	$	3,879	$	3,879	$	—

7

In addition, as described in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of businesses around markets and customers. These changes included the consolidation of customer account activity within international countries (expanding dual credit reporting) and the centralization of manufacturing and supply chain technology platforms. Segment information presented herein reflects the impact of these changes for all periods presented.

The Company updated its financial information and disclosures in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) to reflect the retrospective application of ASU No. 2017-07 and the preceding business reporting changes.

Changes to Significant Accounting Policies

The following accounting policies have been updated since the Company’s 2017 Annual Report on Form 10-K (which was updated by 3M’s Current Report on Form 8-K dated May 8, 2018 in regards to the adoption of ASU 2017-07 and the business segment reporting changes discussed above).

Revenue (sales) recognition: As described in the “New Accounting Pronouncements” section,  3M adopted ASU No. 2014-09, Revenue from Contracts with Customers, and other related ASUs on January 1, 2018 using the modified retrospective transition approach. The Company’s accounting policy with respect to revenue recognition and additional disclosure relative to this ASU are included in Note 2.

Investments: As described in the “New Accounting Pronouncements” section, 3M adopted ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities,  effective January 1, 2018. As a result, all equity securities that do not result in consolidation and are not accounted for under the equity method are measured at fair value with changes therein reflected in net income. 3M utilizes the measurement alternative for equity investments that do not have readily determinable fair values and measures these investments at cost less impairment plus or minus observable price changes in orderly transactions. Further, the change in balance of these securities for the three and six months ended June 30, 2018 was not considered material for additional disclosure.

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 month-end exchange rates of the period reported. Income and expense items are translated at month-end exchange rates of each applicable month. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders’ equity.

3M has a subsidiary in Venezuela, the financial statements of which are remeasured as if its functional currency were that of its parent because Venezuela’s economic environment is considered highly inflationary. The operating income of this subsidiary is immaterial as a percent of 3M’s consolidated operating income for 2017. The Venezuelan government sets official rates of exchange and conditions precedent to purchase foreign currency at these rates with local currency. The government has also operated various expanded secondary currency exchange mechanisms that have been eliminated and replaced from time to time. Such rates and conditions have been and continue to be subject to change. For the periods presented, the financial statements of 3M’s Venezuelan subsidiary were remeasured utilizing the rate associated with the secondary auction mechanism, Tipo de Cambio Complementario (DICOM), or its predecessor. During the same periods, the Venezuelan government’s official exchange was Tipo de Cambio Protegido (DIPRO), or its predecessor, until its discontinuance in the first quarter of 2018.

Note 1 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) provides additional information the Company considers in determining the exchange rate used relative to its Venezuelan subsidiary as well as factors which could lead to its deconsolidation. The Company continues to monitor these circumstances. Changes in applicable exchange rates or exchange mechanisms may continue in the future. These changes could impact the rate of exchange applicable to remeasure the Company’s net monetary assets (liabilities) denominated in Venezuelan Bolivars (VEF). As of June 30, 2018, the Company had a balance of net monetary assets denominated in VEF of less than 860 billion VEF and the DIPRO exchange rate was approximately 96,000 VEF per U.S. dollar. A need to deconsolidate the Company’s Venezuelan subsidiary’s operations may result from a lack of exchangeability of VEF-denominated cash coupled with an acute degradation in the ability to make key operational decisions due to government regulations in Venezuela. Based upon a review of factors as of June 30, 2018, the Company continues to

8

consolidate its Venezuelan subsidiary. As of June 30, 2018, the balance of accumulated other comprehensive loss associated with this subsidiary was approximately $145 million, and the amount of intercompany receivables due from this subsidiary and its equity balance were not significant.

3M has subsidiaries in Argentina, the operating income of which is less than one half of one percent of 3M’s consolidated operating income for 2017. Based on various indices, Argentina’s cumulative three-year inflation rate exceeded 100 percent in the second quarter of 2018, thus being considered highly inflationary. As a result, the financial statements of the Argentine subsidiaries will be remeasured as if its functional currency were that of its parent, starting in the third quarter of 2018. As of June 30, 2018, the Company had a balance of net monetary assets denominated in Argentine pesos (ARS) of less than 230 million ARS and the exchange rate was approximately 28 ARS per U.S. dollar.

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 a result of the dilution associated with the Company’s stock-based compensation plans. Certain options outstanding under these stock-based compensation plans 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 (3.5 million average options for the three months ended June 30, 2018; 2.7 million average options for the six months ended June 30, 2018; insignificant for the three months ended June 30, 2017; 1.6 million average options for the six months ended June 30, 2017). The computations for basic and diluted earnings per share follow:

Earnings Per Share Computations

	Three months ended				Six months ended
	June 30,				June 30,
(Amounts in millions, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income attributable to 3M	$	1,857	$	1,583	$	2,459	$	2,906
Denominator:
Denominator for weighted average 3M common shares outstanding – basic		591.4		598.1		593.8		598.1
Dilution associated with the Company’s stock-based compensation plans		12.8		14.7		14.7		14.3
Denominator for weighted average 3M common shares outstanding – diluted		604.2		612.8		608.5		612.4
Earnings per share attributable to 3M common shareholders – basic	$	3.14	$	2.65	$	4.14	$	4.86
Earnings per share attributable to 3M common shareholders – diluted	$	3.07	$	2.58	$	4.04	$	4.74

9

New Accounting Pronouncements

See the Company’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for a more detailed discussion of the standards in the tables that follow, except for those pronouncements issued subsequent to the most recent Form 10-K filing date for which separate, more detailed discussion is provided below.

Standards Adopted During the Current Fiscal Year
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2014-09, Revenue from Contracts with Customers (as amended by ASU Nos. 2015-14, 2016-08, 2016-10, 2016-12, and 2016-20) and related ASU No. 2017-10, Determining the Customer of the Operation Services	Provides a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. Core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Requires disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Specifies the accounting for some costs to obtain or fulfill a contract with a customer.	January 1, 2018	See Note 2 for detailed discussion and disclosures. Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was increased by less than $2 million.
ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	Requires investments in equity securities in an entity that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with changes therein reflected in net income. Simplifies the impairment assessment and allows for a fair value measurement alternative for equity investments without a readily determinable fair value. Eliminates the previous cost method of accounting for certain equity securities that did not have readily determinable fair values.	January 1, 2018	Measurement alternative adopted prospectively. See the preceding “Changes to Significant Accounting Policies” section for impact.
ASU No. 2016-16, Intra-Entity Transfers of Assets Other Than Inventory	Exempts income tax accounting that requires companies to defer the income tax effects of certain intercompany transactions only for intercompany inventory transactions. The exception no longer applies to intercompany sales and transfers of other assets (e.g., intangible assets).	January 1, 2018	Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was decreased by less than $2 million.
ASU No. 2017-01, Clarifying the Definition of a Business	Narrows the previous definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business.	January 1, 2018	Adopted prospectively with no immediate impact. Fewer sets of transferred assets and activities are expected to be considered businesses.
ASU No. 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets	Largely impacts the sale of nonfinancial assets (such as real estate and intellectual property) that do not constitute a business, when the purchaser is not a customer. Seller applies certain recognition and measurement principles of ASU No. 2014-09, Revenue from Contracts with Customers, even though the purchaser is not a customer.	January 1, 2018	Adopted coincident with the adoption of ASU No. 2014-09 with no material impact.

10

Standards Adopted During the Current Fiscal Year (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	Changes previous classification of net periodic defined benefit pension and postretirement benefit costs within operating expenses. Requires that only the service cost component of net periodic benefit cost be included in operating expenses and that only the service cost component is eligible for capitalization into assets such as inventory. Specifies that other net periodic benefit costs components (such as interest, expected return on plan assets, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income.	January 1, 2018	Adopted on a retrospective basis. No impact on previously reported income before income taxes and net income attributable to 3M. However, non-service cost components of net periodic benefit costs in prior periods have been reclassified from operating expenses and are now reported outside of operating income within other expense (income), net. See the “Basis of Presentation” section above for impact of this ASU’s adoption on prior period income statement amounts.  Prospective impact on costs capitalized into assets was not material.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.

Standards Issued and Not Yet Adopted
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2016-02, Leases (as amended by ASU No. 2018-10)	Introduces a lessee model that requires entities to recognize assets and liabilities for most leases, but recognize expenses on their income statements in a manner similar to current accounting. This ASU does not make fundamental changes to existing lessor accounting.	January 1, 2019	Requires modified retrospective transition applied to earliest period presented 3M is currently assessing this ASU’s impact. See the “Relevant New Standards Issued Subsequent to Most Recent Annual Report” below for further discussion on ASU No. 2018-10 issued in July 2018.
ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments	Introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments and modifies the impairment model for available-for-sale debt securities. Amends the current other-than-temporary impairment model for available-for-sale debt securities. For such securities with unrealized losses, entities will still consider if a portion of any impairment is related only to credit losses and therefore recognized as a reduction in income.	January 1, 2020	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. 3M is currently assessing this ASU’s impact.
ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities	Shortens the amortization period to the earliest call date for the premium related to certain callable debt securities that have explicit, noncontingent call features and are callable at a fixed price and preset date.	January 1, 2019	3M’s marketable security portfolio includes limited instances of callable debt securities held at a premium. 3M does not expect this ASU to have a material impact.

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Standards Issued and Not Yet Adopted (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception	Amends (1) the classification of financial instruments with down-round features as liabilities or equity by revising certain guidance relative to evaluating if they must be accounted for as derivative instruments and (2) the guidance on recognition and measurement of freestanding equity-classified instruments.	January 1, 2019	No financial instruments with down-round features have been issued. 3M does not expect this ASU to have a material impact.
ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities	Amends existing guidance to simplify application of hedge accounting in certain situations and allow companies to better align their hedge accounting with risk management activities. Simplifies related accounting by eliminating requirement to separately measure and report hedge ineffectiveness. Expands an entity’s ability to hedge nonfinancial and financial risk components.	January 1, 2019	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted.   3M is currently assessing this ASU’s impact.

Relevant New Standards Issued Subsequent to Most Recent Annual Report

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which permits entities to reclassify, to retained earnings, the one-time income tax effects stranded in accumulated other comprehensive income (AOCI) arising from the change in the U.S. federal corporate tax rate as a result of the Tax Cuts and Jobs Act of 2017. An entity that elects to make this reclassification must consider all items in AOCI that have tax effects stranded as a result of the tax rate change, and must disclose the reclassification of these tax effects as well as the entity’s policy for releasing income tax effects from AOCI. The ASU may be applied either retrospectively or as of the beginning of the period of adoption. For 3M, the ASU is effective January 1, 2019. While this ASU will have no impact on 3M’s results of operations, the Company is currently assessing this standard’s impact on its consolidated financial condition.

In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting, which largely aligns the measurement and classification guidance for share-based payments to nonemployees with the guidance for share-based payments to employees. The ASU also clarifies that any share-based payment issued to a customer should be evaluated under ASC 606, Revenue from Contracts with Customers. The ASU requires a modified retrospective transition approach. For 3M, the ASU is effective as of January 1, 2019. Because the Company does not grant share-based payments to nonemployees or customers, this ASU will not have a material impact on its consolidated results of operations and financial condition.

In June 2018, the FASB issued ASU No. 2018-08, Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The ASU applies to entities that receive or make contributions, which primarily are not-for-profit entities but also affects business entities that make contributions. In the context of business entities that make contributions, the FASB clarified that a contribution is conditional if the arrangement includes both a barrier for the recipient to be entitled to the assets transferred and a right of return for the assets transferred (or a right of release of the business entity’s obligation to transfer assets). The recognition of contribution expense is deferred for conditional arrangements and is immediate for unconditional arrangements. The ASU requires modified prospective transition to arrangements that have not been completed as of the effective date or that are entered into after the effective date, but full retrospective application to each period presented is permitted. For 3M, the ASU is effective as of January 1, 2019. The Company does not expect this ASU to have a material impact on its consolidated results of operations and financial condition.

In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases, which amends ASU No. 2016-02, Leases. The new ASU includes certain clarifications to address potential narrow-scope implementation issues which the Company is incorporating into its assessment and adoption of ASU No. 2016-02. This ASU has the same transition requirements and effective date as ASU No. 2016-02, which for 3M is January 1, 2019.

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NOTE 2.  Revenue

The Company adopted ASU No. 2014-09 and related standards (collectively, Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers), as described in Note 1, on January 1, 2018 using the modified retrospective method of adoption. Prior periods have not been restated. Due to the cumulative net impact of adopting ASC 606, the January 1, 2018 balance of retained earnings was increased by less than $2 million, primarily relating to the accelerated recognition for software installation service and training revenue. This cumulative impact reflects retrospective application of ASC 606 only to contracts that were not completed as of January 1, 2018. Further, the Company applied the practical expedient permitting the effect of all contract modifications that occurred before January 1, 2018 to be aggregated in the transition accounting. The impact of applying ASC 606 as compared with previous guidance applied to revenues and costs was not material for the three and six months ended June 30, 2018.

Performance Obligations:

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 or significant payment terms extended to customers. The vast majority of 3M’s customer arrangements contain a single performance obligation to transfer manufactured goods as the promise to transfer the individual goods is not separately identifiable from other promises in the contracts and, therefore, not distinct.However, to a limited extent 3M also enters into customer arrangements that involve intellectual property out-licensing, multiple performance obligations (such as equipment, installation and service), software with coterminous post-contract support, services and non-standard terms and conditions.

Revenue is recognized when control of goods has transferred to customers. For the majority of the Company’s customer arrangements, control transfers to customers at a point-in-time when goods/services have been delivered as that is generally when legal title, physical possession and risks and rewards of goods/services transfers to the customer. In limited arrangements, control transfers over time as the customer simultaneously receives and consumes the benefits as 3M completes the performance obligation(s).

Revenue is recognized at the transaction price which the Company expects to be entitled. When determining the transaction price, 3M estimates variable consideration applying the portfolio approach practical expedient under ASC 606. The main sources of variable consideration for 3M are customer rebates, trade promotion funds, and cash discounts. These sales incentives are recorded as a reduction to revenue at the time of the initial sale using the most-likely amount estimation method. The most-likely amount method is based on the single most likely outcome from a range of possible consideration outcomes. The range of possible consideration outcomes are primarily derived from the following inputs: sales terms, historical experience, trend analysis, and projected market conditions in the various markets served. Because 3M serves numerous markets, the sales incentive 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. There are no material instances where variable consideration is constrained and not recorded at the initial time of sale. Free goods are accounted for as an expense and recorded in cost of sales. Product returns are recorded as a reduction to revenue based on anticipated sales returns that occur in the normal course of business. 3M primarily has assurance-type warranties that do not result in separate performance obligations. Sales, use, value-added, and other excise taxes are not recognized in revenue. The Company has elected to present revenue net of sales taxes and other similar taxes.

For substantially all arrangements recognized over time, the Company applies the “right to invoice” practical expedient. As a result, 3M recognizes revenue at the invoice amount when the entity has a right to invoice a customer at an amount that corresponds directly with the value to the customer of the Company’s performance completed to date.

For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using 3M’s best estimate of the standalone selling price of each distinct good or service in the contract.

The Company did not recognize any material revenue in the current reporting period for performance obligations that were fully satisfied in previous periods.

Contract Balances:

Deferred income (current portion) as of June 30, 2018 and December 31, 2017 was $512 million and $513 million, respectively, and primarily relates to revenue that is recognized over time for one-year software license contracts, the changes in balance of which are related to the satisfaction or partial satisfaction of these contracts. The balance also contains a deferral of income for goods that are in-transit at period end for which control transfers to the customer upon delivery. Approximately $110 million and $390 million of the

13

December 31, 2017 balance was recognized as revenue during the three and six months ended June 30, 2018, respectively. The amount of noncurrent deferred income is not considered significant.

Exemptions and Practical Expedients Applied or Elected:

3M applies ASC 606 utilizing the following allowable exemptions or practical expedients:

· Exemption to not disclose the unfulfilled performance obligation balance for contracts with an original length of one year or less.

· Practical expedient relative to costs of obtaining a contract by expensing sales commissions when incurred because the amortization period would have been one year or less.

· Portfolio approach practical expedient relative to estimation of variable consideration.

· “Right to invoice” practical expedient based on 3M’s right to invoice the customer at an amount that reasonably represents the value to the customer of 3M’s performance completed to date.

· Election to present revenue net of sales taxes and other similar taxes.

· Sales-based royalty exemption permitting future intellectual property out-licensing royalty payments to be excluded from the otherwise required remaining performance obligations disclosure.

Disaggregated revenue information:

The Company views the following disaggregated disclosures as useful to understanding the composition of revenue recognized during the respective reporting periods:

	Three months ended				Six months ended
	June 30,				June 30,
Net Sales (Millions)	2018		2017		2018		2017
Abrasives	$	473	$	437	$	948	$	867
Adhesives and Tapes		1,165		1,096		2,318		2,171
Advanced Materials		317		287		621		574
Automotive and Aerospace		519		489		1,078		997
Automotive Aftermarket		438		418		856		835
Separation and Purification		238		219		474		439
Other Industrial		(2)		—		(3)		(1)
Total Industrial Business Group	$	3,148	$	2,946	$	6,292	$	5,882
Commercial Solutions	$	502	$	457	$	987	$	900
Personal Safety		957		721		1,919		1,428
Roofing Granules		99		96		200		193
Transportation Safety		257		295		493		598
Other Safety and Graphics		—		—		(1)		—
Total Safety and Graphics Business Group	$	1,815	$	1,569	$	3,598	$	3,119
Drug Delivery	$	119	$	120	$	238	$	241
Food Safety		84		76		166		149
Health Information Systems		205		195		410		386
Medical Solutions		772		729		1,548		1,443
Oral Care		342		330		696		666
Other Health Care		(2)		(1)		(2)		(1)
Total Health Care Business Group	$	1,520	$	1,449	$	3,056	$	2,884
Electronics	$	925	$	883	$	1,856	$	1,761
Energy		411		404		831		817
Other Electronics and Energy		1		3		—		3
Total Electronics and Energy Business Group	$	1,337	$	1,290	$	2,687	$	2,581
Consumer Health Care	$	100	$	104	$	202	$	206
Home Care		255		253		524		514
Home Improvement		507		460		954		868
Stationery and Office		351		340		650		632
Other Consumer		10		12		20		22
Total Consumer Business Group	$	1,223	$	1,169	$	2,350	$	2,242
Corporate and Unallocated	$	12	$	2	$	12	$	3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495

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	Three months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,182	$	870	$	777	$	318	$	1	$	3,148
Safety and Graphics			747		419		443		206		—		1,815
Health Care			703		292		381		145		(1)		1,520
Electronics and Energy			244		899		131		63		—		1,337
Consumer			742		236		138		105		2		1,223
Corporate and Unallocated			8		1		1		4		(2)		12
Elimination of Dual Credit			(278)		(213)		(113)		(60)		(1)		(665)
Total Company		$	3,348	$	2,504	$	1,758	$	781	$	(1)	$	8,390

	Six months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,282	$	1,814	$	1,562	$	634	$	—	$	6,292
Safety and Graphics			1,399		916		879		404		—		3,598
Health Care			1,405		591		775		286		(1)		3,056
Electronics and Energy			473		1,810		276		129		(1)		2,687
Consumer			1,352		508		279		211		—		2,350
Corporate and Unallocated			8		—		1		3		—		12
Elimination of Dual Credit			(527)		(459)		(222)		(119)		—		(1,327)
Total Company		$	6,392	$	5,180	$	3,550	$	1,548	$	(2)	$	16,668

	Three months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,114	$	810	$	709	$	314	$	(1)	$	2,946
Safety and Graphics			639		370		364		195		1		1,569
Health Care			697		261		353		137		1		1,449
Electronics and Energy			233		855		136		67		(1)		1,290
Consumer			694		231		139		105		—		1,169
Corporate and Unallocated			2		2		—		(1)		(1)		2
Elimination of Dual Credit			(252)		(207)		(96)		(60)		—		(615)
Total Company		$	3,127	$	2,322	$	1,605	$	757	$	(1)	$	7,810

	Six months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,196	$	1,663	$	1,405	$	619	$	(1)	$	5,882
Safety and Graphics			1,220		801		715		383		—		3,119
Health Care			1,387		521		706		270		—		2,884
Electronics and Energy			464		1,706		279		132		—		2,581
Consumer			1,281		490		265		207		(1)		2,242
Corporate and Unallocated			3		1		—		—		(1)		3
Elimination of Dual Credit			(483)		(427)		(188)		(118)		—		(1,216)
Total Company		$	6,068	$	4,755	$	3,182	$	1,493	$	(3)	$	15,495

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NOTE 3. Acquisitions and Divestitures

Acquisitions:

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

There were no business combinations that closed during the six months ended June 30, 2018and 2017.

As discussed in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K), in October 2017, 3M completed the acquisition of Scott Safety for $2.0 billion of cash, net of cash acquired. Adjustments in 2018 to the purchase price allocation were approximately $16 million and related to identification of certain immaterial acquired assets and resolution of certain acquired working capital and other purchase price adjustments with the seller. The change to provisional amounts did not result in material impacts to results of operations in 2018 or any portion related to earlier quarters in the measurement period. The allocation of purchase consideration related to Scott Safety is considered preliminary with provisional amounts primarily related to intangible assets and certain tax-related and contingent liability items. 3M expects to finalize the allocation of purchase price within the one year measurement-period following the acquisition.

Divestitures:

3M may divest certain businesses from time to time based upon reviews of the Company’s portfolio considering, among other items, factors relative to the extent of strategic and technological alignment and optimization of capital deployment, in addition to considering if selling the businesses results in the greatest value creation for the Company and its shareholders.

2018 divestitures:

In February 2018, 3M closed on the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring to TSI, Inc. This business has annual sales of approximately $15 million. The transaction resulted in a pre-tax gain of less than $20 million that was reported within the Company’s Safety and Graphics business.

In addition, during the first quarter of 2018, 3M divested a polymer additives compounding business, formerly part of the Company’s Industrial business, and reflected a gain on final closing adjustments from a prior divestiture which, in aggregate, were not material.

In May 2018, 3M divested an abrasives glass products business, formerly part of the Company’s Industrial business, with annual sales of approximately $10 million. The transaction resulted in a pre-tax gain of less than $15 million.

In June 2018, 3M completed the sale of substantially all of its Communication Markets Division to Corning Incorporated. This business, with annual sales of approximately $400 million, consists of optical fiber and copper passive connectivity solutions for the telecommunications industry including 3M’s xDSL, FTTx, and structured cabling solutions and, in certain countries, telecommunications system integration services. 3M received cash proceeds of $772 million and reflected a pre-tax gain of $494 million as a result of this divestiture, which was reported within the Company’s Electronics and Energy business.  The sale of the telecommunications system integration services portion of the business based in Germany for approximately $30 million remains pending and is expected to be completed by the end of 2018.

2017 divestitures:

During 2017, as described in Note 2 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K), the Company divested of a number of business including its: safety prescription eyewear; identity management; tolling and automated license/number plate recognition; electronic monitoring; and electrical marking/labeling businesses.

The aggregate operating income of these businesses was approximately $25 million and $10 million in the first six months of 2018 and 2017, respectively. The approximate amounts of major assets and liabilities associated with disposal groups classified as held-for-sale as of June 30, 2018 were not material and as of December 31, 2017 included the following:

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	December 31,
(Millions)	2017
Accounts receivable	$	25
Property, plant and equipment (net)		20

In addition, an immaterial amount and approximately $275 million of goodwill was estimated to be attributable to disposal groups classified as held-for-sale as of June 30, 2018 and December 31, 2017, respectively, based upon relative fair value. The amounts above have not been segregated and are classified within the existing corresponding line items on the Company’s consolidated balance sheet.

Refer to Note 2 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for more information on 3M’s acquisitions and divestitures.

NOTE 4.  Goodwill and Intangible Assets

There were no acquisitions that closed during the first six months of 2018. The acquisition activity in the following table relates to the net impact of adjustments to the preliminary allocation of purchase price within the one year measurement period following prior acquisitions, which decreased goodwill by $16 million during the six months ended June 30, 2018. Divestiture activity within the Electronics and Energy business segment relates to the sale of substantially all of the Communication Markets Division. The amounts in the “Translation and other” column in the following table primarily relate to changes in foreign currency exchange rates. The goodwill balances by business segment as of December 31, 2017 and June 30, 2018, follow:

Goodwill

	December 31, 2017		Acquisition		Divestiture		Translation		June 30, 2018
(Millions)	Balance		activity		activity		and other		Balance
Industrial	$	2,678	$	—	$	(4)	$	(44)	$	2,630
Safety and Graphics		4,419		(16)		(8)		(57)		4,338
Health Care		1,682		—		—		(19)		1,663
Electronics and Energy		1,524		—		(247)		(10)		1,267
Consumer		210		—		—		(1)		209
Total Company	$	10,513	$	(16)	$	(259)	$	(131)	$	10,107

Accounting standards require that goodwill be tested for impairment annually and between annual tests in certain circumstances such as a change in reporting units or the testing of recoverability of a significant asset group within a reporting unit. At 3M, reporting units generally correspond to a division.

As described in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of its businesses around markets and customers. In addition, certain shared film manufacturing and supply technology platform resources formerly reflected within the Electronics and Energy business segment were combined with other shared and centrally managed material resource centers of expertise within Corporate and Unallocated. For any product changes 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 2018, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed.

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Acquired Intangible Assets

The carrying amount and accumulated amortization of acquired finite-lived intangible assets, in addition to the balance of non-amortizable intangible assets, as of June 30, 2018, and December 31, 2017, follow:

	June 30,		December 31,
(Millions)	2018		2017
Customer related intangible assets	$	2,302	$	2,332
Patents		554		561
Other technology-based intangible assets		578		583
Definite-lived tradenames		676		678
Other amortizable intangible assets		204		207
Total gross carrying amount	$	4,314	$	4,361
Accumulated amortization — customer related		(931)		(874)
Accumulated amortization — patents		(491)		(489)
Accumulated amortization — other technology based		(312)		(292)
Accumulated amortization — definite-lived tradenames		(272)		(256)
Accumulated amortization — other		(164)		(162)
Total accumulated amortization	$	(2,170)	$	(2,073)
Total finite-lived intangible assets — net	$	2,144	$	2,288
Non-amortizable intangible assets (primarily tradenames)		643		648
Total intangible assets — net	$	2,787	$	2,936

3M does not amortize certain acquired tradenames because they have been in existence for over 55 years, have a history of leading-market share positions, are intended to be continuously renewed, and the associated products are expected to generate cash flows for 3M for an indefinite period of time.

Amortization expense for acquired intangible assets for the three and six months ended June 30, 2018 and 2017 follows:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Amortization expense	$	63	$	47	$	127	$	111

Expected amortization expense for acquired amortizable intangible assets recorded as of June 30, 2018:

	Remainder of												After
(Millions)	2018		2019		2020		2021		2022		2023		2023
Amortization expense	$	123	$	241	$	229	$	220	$	206	$	175	$	950

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 5.  Restructuring Actions and Exit Activities

2018 Restructuring Actions:

During the second quarter of 2018, management approved and committed to undertake certain restructuring actions related to addressing corporate functional costs following the Communication Markets Division divestiture. These actions affected approximately 900 positions worldwide and resulted in a second quarter 2018 pre-tax charge of $105 million, essentially all within Corporate and Unallocated. 

The restructuring charges were recorded in the income statement as follows:

(Millions)	Second Quarter 2018
Cost of sales	$	12
Selling, general and administrative expenses		89
Research, development and related expenses		4
Total	$	105

Components of these restructuring actions, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2018	$	105
Cash payments		(6)
Accrued restructuring action balances as of June 30, 2018	$	99

Remaining activities related to this restructuring are expected to be largely completed through the first half of 2019.

2017 Restructuring Actions:

During the second quarter of 2017, management approved and committed to undertake certain restructuring actions primarily focused on portfolio and footprint optimization. These actions affected approximately 1,300 positions worldwide and resulted in a second quarter 2017 pre-tax charge of $99 million.

Components of these restructuring actions, including cash and non-cash impacts, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2017	$	99
Cash payments		(8)
Adjustments		(3)
Accrued restructuring action balances as of December 31, 2017	$	88
Cash payments		(13)
Adjustments		(27)
Accrued restructuring action balances as of June 30, 2018	$	48

Remaining activities related to this restructuring are expected to be completed by the end of 2018. A portion of the adjustments detailed above include certain severance accruals taken in 2017, the obligation for which was relieved and reflected as part of the gain on divestiture when that business was sold in 2018.

2017 Exit Activities:

During the first quarter of 2017, the Company recorded net pre-tax charges of $24 million related to exit activities. These charges related to employee reductions, primarily in Western Europe.

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NOTE 6.  Supplemental Income Statement Information

Other expense (income), net consists of the following:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Interest expense	$	88	$	54	$	170	$	99
Interest income		(16)		(12)		(37)		(20)
Pension and postretirement net periodic benefit cost (benefit)		(21)		(31)		(40)		(63)
Total	$	51	$	11	$	93	$	16

Pension and postretirement net periodic benefit costs described in the table above include all components of defined benefit plan net periodic benefit costs except service cost, which is reported in various operating expense lines. Refer to Note 11 for additional details on the components of pension and postretirement net periodic benefit costs.

NOTE 7.  Supplemental Equity and Comprehensive Income Information

Consolidated Statement of Changes in Equity

Three months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2018	$	11,039	$	5,505	$	38,453	$	(26,178)	$	(6,803)	$	62
Net income		1,862				1,857						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(496)								(492)		(4)
Defined benefit pension and post-retirement plans adjustment		114								114		—
Cash flow hedging instruments - unrealized gain (loss)		162								162		—
Total other comprehensive income (loss), net of tax		(220)
Dividends declared		(802)				(802)
Stock-based compensation		54		54
Reacquired stock		(1,591)						(1,591)
Issuances pursuant to stock option and benefit plans		86				(66)		152
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

20

Six months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2017	$	11,622	$	5,361	$	39,115	$	(25,887)	$	(7,026)	$	59
Net income		2,468				2,459						9
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(329)								(324)		(5)
Defined benefit pension and post-retirement plans adjustment		230								230		—
Cash flow hedging instruments - unrealized gain (loss)		101								101		—
Total other comprehensive income (loss), net of tax		2
Dividends declared		(1,612)				(1,612)
Stock-based compensation		198		198
Reacquired stock		(2,563)						(2,563)
Issuances pursuant to stock option and benefit plans		313				(520)		833
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

Three months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2017	$	11,040	$	5,198	$	38,094	$	(25,354)	$	(6,949)	$	51
Net income		1,585				1,583						2
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(67)								(67)		—
Defined benefit pension and post-retirement plans adjustment		78								78		—
Cash flow hedging instruments - unrealized gain (loss)		(51)								(51)		—
Total other comprehensive income (loss), net of tax		(40)
Dividends declared		(701)				(701)
Stock-based compensation		55		55
Reacquired stock		(475)						(475)
Issuances pursuant to stock option and benefit plans		180				(183)		363
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

21

Six months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2016	$	10,343	$	5,070	$	37,907	$	(25,434)	$	(7,245)	$	45
Net income		2,911				2,906						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		225								222		3
Defined benefit pension and post-retirement plans adjustment		161								161		—
Cash flow hedging instruments - unrealized gain (loss)		(127)								(127)		—
Total other comprehensive income (loss), net of tax		259
Dividends declared		(1,403)				(1,403)
Stock-based compensation		183		183
Reacquired stock		(1,153)						(1,153)
Issuances pursuant to stock option and benefit plans		504				(617)		1,121
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

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

Three months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2018, net of tax:	$	(1,470)	$	(5,160)	$	(173)	$	(6,803)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(411)		—		182		(229)
Amounts reclassified out		—		151		28		179
Total other comprehensive income (loss), before tax		(411)		151		210		(50)
Tax effect		(81)		(37)		(48)		(166)
Total other comprehensive income (loss), net of tax		(492)		114		162		(216)
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

Six months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2017, net of tax:	$	(1,638)	$	(5,276)	$	(112)	$	(7,026)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(282)		—		100		(182)
Amounts reclassified out		—		302		62		364
Total other comprehensive income (loss), before tax		(282)		302		162		182
Tax effect		(42)		(72)		(61)		(175)
Total other comprehensive income (loss), net of tax		(324)		230		101		7
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

22

Three months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2017, net of tax:	$	(1,719)	$	(5,245)	$	15	$	(6,949)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(167)		—		(74)		(241)
Amounts reclassified out		—		119		(5)		114
Total other comprehensive income (loss), before tax		(167)		119		(79)		(127)
Tax effect		100		(41)		28		87
Total other comprehensive income (loss), net of tax		(67)		78		(51)		(40)
Balance at June 30, 2017, net of tax:	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Six months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2016, net of tax:	$	(2,008)	$	(5,328)	$	91	$	(7,245)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		59		—		(175)		(116)
Amounts reclassified out		—		238		(23)		215
Total other comprehensive income (loss), before tax		59		238		(198)		99
Tax effect		163		(77)		71		157
Total other comprehensive income (loss), net of tax		222		161		(127)		256
Balance at June 30, 2017, net of tax	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation do 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
Details about Accumulated Other	Accumulated Other Comprehensive Income
Comprehensive Income Components	Three months ended June 30,				Six months ended June 30,				Location on Income
(Millions)	2018		2017		2018		2017		Statement
Gains (losses) associated with defined benefit pension and postretirement plans amortization
Prior service benefit	$	19	$	22	$	38	$	44	See Note 11
Net actuarial loss		(170)		(141)		(340)		(282)	See Note 11
Total before tax		(151)		(119)		(302)		(238)
Tax effect		37		41		72		77	Provision for income taxes
Net of tax	$	(114)	$	(78)	$	(230)	$	(161)
Cash flow hedging instruments gains (losses)
Foreign currency forward/option contracts	$	(27)	$	5	$	(61)	$	23	Cost of sales
Interest rate swap contracts		(1)		—		(1)		—	Interest expense
Total before tax		(28)		5		(62)		23
Tax effect		7		(2)		15		(8)	Provision for income taxes
Net of tax	$	(21)	$	3	$	(47)	$	15
Total reclassifications for the period, net of tax	$	(135)	$	(75)	$	(277)	$	(146)

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NOTE 8.  Income Taxes

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 2005.

The IRS has completed its field examination of the Company’s U.S. federal income tax returns for the years 2005 through 2014, and 2016. The Company protested certain IRS positions within these tax years and entered into the administrative appeals process with the IRS. Currently, the Company is under examination by the IRS for its U.S. federal income tax returns for the years 2015 and 2017. As of June 30, 2018, the IRS has not proposed any significant adjustments to the Company’s tax positions for which the Company is not adequately reserved.

Payments relating to other proposed assessments arising from the 2005 through 2017 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 audit activity in several U.S. state and foreign jurisdictions.

3M anticipates changes to the Company’s uncertain tax positions due to the closing and resolution of audit issues for various audit years mentioned above and closure of statutes. Currently, the Company is estimating a decrease in unrecognized tax benefits during the next 12 months as a result of anticipated resolutions of audit issues. The total amounts of unrecognized tax benefits that, if recognized, would affect the effective tax rate as of June 30, 2018 and December 31, 2017 are $493 million and $526 million, respectively.

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 $6 million of benefit and $5 million of expense for the three months ended June 30, 2018 and June 30, 2017, respectively, and approximately $3 million and $8 million of expense for the six months ended June 30, 2018 and June 30, 2017, respectively. At June 30, 2018 and December 31, 2017, accrued interest and penalties in the consolidated balance sheet on a gross basis were $60 million and $68 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.

The provision for income taxes is determined using the asset and liability approach. Under this approach, a valuation allowance is recorded to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of June 30, 2018 and December 31, 2017, the Company had valuation allowances of $83 million and $81 million on its deferred tax assets, respectively.

The effective tax rate for the second quarter of 2018 was 20.8 percent, compared to 26.0 percent in the second quarter of 2017, a decrease of 5.2 percentage points. Primary factors that decreased the Company’s effective tax rate included favorable aspects of the 2017 Tax Cuts and Jobs Act (TCJA) such as the decrease in the U.S. income tax rate and provisions incentivizing foreign-derived intangible income (FDII), in addition to impacts associated with composition of geographic mix of income before taxes. These decreases were partially offset by multiple factors that increased the Company’s effective tax rate. These increases were primarily driven by lower excess tax benefits related to employee share-based payments and impacts of the TCJA such as the global intangible low-taxed income (GILTI) provision and the elimination of the domestic manufacturing deduction.

The effective tax rate for the first six months of 2018 was 25.6 percent, compared to 25.0 percent in the first six months of 2017, an increase of 0.6 percentage points. Factors that increased the Company’s effective tax rate primarily related to impacts of the TCJA such as the first quarter 2018 measurement period adjustment to the provisional accounting of the TCJA’s enactment (discussed further below) as well as the TCJA’s GILTI provision and the elimination of the domestic manufacturing deduction. Lower excess tax benefits year-over-year related to employee share-based payments also increased the Company’s effective tax rate. These increases were partially offset by multiple factors that decreased the Company’s effective tax rate, including favorable aspects of the TCJA such as the decrease in the U.S. income tax rate and FDII, in addition to impacts associated with composition of income before taxes from both a geographic and a discrete item (such as the resolution of the NRD Lawsuit, as defined and described in Note 14) perspective.

The TCJA was enacted in December 2017. Among other things, the TCJA reduces the U.S. federal corporate tax rate from 35 percent to 21 percent beginning in 2018, requires companies to pay a one-time transition tax on previously unremitted earnings of non-U.S.

24

subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings. The SEC staff issued Staff Accounting Bulletin (SAB) 118, which provides guidance on accounting for enactment effects of the TCJA. SAB 118 provides a measurement period of up to one year from the TCJA’s enactment date for companies to complete their accounting under ASC 740. In accordance with SAB 118, to the extent that a company’s accounting for certain income tax effects of the TCJA is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in its financial statements. If a company cannot determine a provisional estimate to be included in its financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the TCJA. In connection with 3M’s initial analysis of the impact of the enactment of the TCJA, the Company recorded a net tax expense of $762 million in the fourth quarter of 2017. As further discussed below, during the first quarter of 2018, 3M recognized a measurement period adjustment resulting in an additional tax expense of $217 million to this provisional accounting. The Company made no additional adjustments in the second quarter of 2018.

Transition tax: 3M was able to make a reasonable estimate of the transition tax and recorded a provisional obligation and related income tax expense of $745 million in the fourth quarter of 2017, with an additional $132 million in the first quarter of 2018 as a result of subsequent U.S. Internal Revenue Service guidance. The Company made no additional adjustments in the second quarter of 2018. The Company continues to gather additional information and will consider further guidance to more precisely compute the transition tax. The provisional amount may change when 3M finalizes the calculation of post-1986 foreign earnings and profit previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. The TCJA’s transition tax is payable over eight years beginning in 2018. As of June 30, 2018, 3M reflected $74 million and $733 million in current accrued income taxes and long-term income taxes payable, respectively, associated with the transition tax.

Remeasurement of deferred tax assets/liabilities and other impacts: 3M remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21 percent under the TCJA. In the fourth quarter of 2017, 3M recorded a net additional income tax expense of $17 million related to remeasurement of deferred tax assets/liabilities and other impacts. In the first quarter of 2018, 3M recorded an additional tax expense of $85 million as a measurement period adjustment as a result of subsequent U.S. Internal Revenue Service guidance and other impacts related to TCJA. The Company made no additional adjustments in the second quarter of 2018. 3M is still analyzing certain aspects of the TCJA, considering additional technical guidance, and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. This includes the potential impacts of the GILTI provision within the TCJA on deferred tax assets/liabilities. 3M also is considering other impacts of the 2017 enactment of the TCJA including, but not limited to, effects on the Company’s indefinite reinvestment assertion. 3M previously has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. The full effects of underlying tax rates of the TCJA causes some reassessment of previous indefinite reinvestment assertions with respect to certain jurisdictions. While 3M was able to make a reasonable estimate of these impacts, it may be affected by other analyses related to the TCJA, including, but not limited to, the calculation of the transition tax on deferred foreign income.

3M has not completed its full analysis with respect to the GILTI provision within the TCJA. While 3M has recorded current tax on GILTI relative to 2018 operations, the Company has not yet elected a policy as to whether it will recognize deferred taxes for basis differences expected to reverse as GILTI or whether 3M will account for GILTI as period costs if and when incurred.

25

NOTE 9.  Marketable Securities

The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).

(Millions)	June 30, 2018		December 31, 2017
Corporate debt securities	$	—	$	14
Commercial paper		347		899
Certificates of deposit/time deposits		31		76
U.S. municipal securities		4		3
Asset-backed securities:
Automobile loan related		3		16
Credit card related		—		68
Asset-backed securities total		3		84
Current marketable securities	$	385	$	1,076
U.S. municipal securities	$	26	$	27
Non-current marketable securities	$	26	$	27
Total marketable securities	$	411	$	1,103

At June 30, 2018 and December 31, 2017, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.

The balances at June 30, 2018 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)	June 30, 2018
Due in one year or less	$	382
Due after one year through five years		15
Due after five years through ten years		14
Total marketable securities	$	411

3M does not currently expect risk related to its holding in asset-backed securities to materially impact its financial condition or liquidity.

NOTE 10.  Long-Term Debt and Short-Term Borrowings

As of June 30, 2018 and December 31, 2017, the Company had approximately $1.5 billion and $745 million, respectively, in commercial paper outstanding.

26

NOTE 11.  Pension and Postretirement Benefit Plans

The service cost component of defined benefit net periodic benefit cost is recorded in cost of sales, selling, general and administrative expenses, and research, development and related expenses. The other components of net periodic benefit cost are reflected in other expense (income), net. Components of net periodic benefit cost and other supplemental information for the three and six months ended June 30, 2018 and 2017 follow:

Benefit Plan Information

	Three months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	72	$	67	$	37	$	34	$	13	$	12
Non-operating expense
Interest cost	$	141	$	142	$	40	$	37	$	20	$	20
Expected return on plan assets		(272)		(259)		(79)		(69)		(21)		(21)
Amortization of prior service benefit		(6)		(6)		(3)		(3)		(10)		(13)
Amortization of net actuarial loss		126		97		29		30		15		14
Total non-operating expense (benefit)		(11)		(26)		(13)		(5)		4		—
Total net periodic benefit cost (benefit)	$	61	$	41	$	24	$	29	$	17	$	12

	Six months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	144	$	134	$	73	$	67	$	26	$	25
Non-operating expense
Interest cost	$	282	$	284	$	80	$	74	$	40	$	39
Expected return on plan assets		(544)		(518)		(157)		(138)		(42)		(42)
Amortization of prior service benefit		(12)		(12)		(6)		(6)		(20)		(26)
Amortization of net actuarial loss		252		194		58		60		30		28
Total non-operating expense (benefit)		(22)		(52)		(25)		(10)		8		(1)
Total net periodic benefit cost (benefit)	$	122	$	82	$	48	$	57	$	34	$	24

For the six months ended June 30, 2018, contributions totaling $259 million were made to the Company’s U.S. and international pension plans and $2 million to its postretirement plans. For total year 2018, the Company expects to contribute approximately $300 million to $500 million of cash to its global defined benefit pension and postretirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2018. Future contributions will depend on market conditions, interest rates and other factors. 3M’s annual measurement date for pension and postretirement assets and liabilities is December 31 each year, which is also the date used for the related annual measurement assumptions.

The Company adopted ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. This ASU changed how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Under the new standard, only the service cost component of net periodic benefit cost is included in operating expenses and only the service cost component is eligible for capitalization into assets such as inventory. All other net periodic benefit costs components (such as interest, expected return on plan assets, prior service cost amortization and actuarial gain/loss amortization) are reported outside of operating income. See Note 1 for additional details.

27

NOTE 12.  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 derivatives is included elsewhere as follows:

· Impact on other comprehensive income of nonderivative hedging and derivative instruments is included in Note 7.

· Fair value of derivative instruments is included in Note 13.

· Derivatives and/or hedging instruments associated with the Company’s long-term debt are described in Note 11 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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. 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. 3M may dedesignate 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 or becomes probable of not occurring. 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. The maximum length of time over which 3M hedges its exposure to the variability in future cash flows of the forecasted transactions is 36 months.

Cash Flow Hedging — Interest Rate Contracts: The Company may use forward starting interest rate contracts to hedge exposure to variability in cash flows from interest payments on forecasted debt issuances. The amortization of gains and losses on forward starting interest rate swaps is included in the tables below as part of the gain/(loss) recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income. Additional information regarding previously issued but terminated interest rate contracts, which have related balances within accumulated other comprehensive income being amortized over the underlying life of related debt, can be found in Note 13 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

During the first six months of 2018, the Company entered into forward starting interest rate swaps with a notional amount of $500 million as hedges against interest rate volatility associated with forecasted issuances of fixed rate debt.

The amortization of gains and losses on forward starting interest rate swaps is included in the tables below as part of the gain/(loss) recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income.

As of June 30, 2018, the Company had a balance of $11 million associated with the after-tax net unrealized loss associated with cash flow hedging instruments recorded in accumulated other comprehensive income. This includes a remaining balance of $9 million (after tax loss)  related to the forward starting interest rate swaps, which will be amortized over the respective lives of the debt.  Based on exchange rates as of June 30, 2018, 3M expects to reclassify approximately $20 million, $15 million, and $1 million of the after-tax net unrealized foreign exchange cash flow hedging losses to earnings over the remainder of 2018, over the next 12 months, and after

28

2019, respectively, and reclassify approximately $10 million of the after-tax net unrealized foreign exchange cash flow hedging gains to earnings in 2019 (with the impact offset by earnings/losses 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.

			Pretax Gain (Loss) Recognized in
	Pretax Gain (Loss)		Income on Effective Portion of			Ineffective Portion of Gain
	Recognized in Other		Derivative as a Result of			(Loss) on Derivative and
	Comprehensive		Reclassification from			Amount Excluded from
	Income on Effective		Accumulated Other			Effectiveness Testing
Three months ended June 30, 2018	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	179	Cost of sales	$	(27)	Cost of sales	$	—
Interest rate swap contracts		3	Interest expense		(1)	Interest expense		—
Total	$	182		$	(28)		$	—

Six months ended June 30, 2018
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	100	Cost of sales	$	(61)	Cost of sales	$	—
Interest rate swap contracts		—	Interest expense		(1)	Interest expense		—
Total	$	100		$	(62)		$	—

Three months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(72)	Cost of sales	$	5	Cost of sales	$	—
Interest rate swap contracts		(2)	Interest expense		—	Interest expense		—
Total	$	(74)		$	5		$	—

Six months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(172)	Cost of sales	$	23	Cost of sales	$	—
Interest rate swap contracts		(3)	Interest expense		—	Interest expense		—
Total	$	(175)		$	23		$	—

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. Additional information regarding designated interest rate swaps can be found in Note 13 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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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:

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
Three months ended June 30, 2018	Recognized in Income			Recognized in Income
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(1)	Interest expense	$	1
Total		$	(1)		$	1

Six months ended June 30, 2018
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(12)	Interest expense	$	12
Total		$	(12)		$	12

Three months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	1	Interest expense	$	(1)
Total		$	1		$	(1)

Six months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(4)	Interest expense	$	4
Total		$	(4)		$	4

Net Investment Hedges:

The Company may use non-derivative (foreign currency denominated debt) and derivative (foreign exchange forward contracts) instruments to hedge portions of the Company’s investment in foreign subsidiaries and manage foreign exchange risk. For instruments that are designated and qualify as hedges of net investments in foreign operations and 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. To the extent foreign currency denominated debt is not designated in or is dedesignated from a net investment hedge relationship, changes in value of that portion of foreign currency denominated debt due to exchange rate changes are recorded in earnings through their maturity date.

3M’s use of foreign exchange forward contracts designated in hedges of the Company’s net investment in foreign subsidiaries can vary by time period depending on when foreign currency denominated debt balances designated in such relationships are dedesignated, matured, or are newly issued and designated. Additionally, variation can occur in connection with the extent of the Company’s desired foreign exchange risk coverage.

During the first quarter of 2018, the Company dedesignated 300 million Euros of foreign currency denominated debt from a former net investment hedge relationship.

At June 30, 2018, the total notional amount of foreign exchange forward contracts designated in net investment hedges was approximately 150 million Euros and approximately 248 billion South Korean Won, along with a principal amount of long-term debt instruments designated in net investment hedges totaling 4.1 billion Euros. The maturity dates of these derivative and nonderivative instruments designated in net investment hedges range from 2018 to 2031.

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.

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	Pretax Gain (Loss)
	Recognized as
	Cumulative Translation
	within Other		Ineffective Portion of Gain (Loss) on
	Comprehensive Income		Instrument and Amount Excluded
	on Effective Portion of		from Effectiveness Testing
Three months ended June 30, 2018	Instrument		Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	299	Cost of sales	$	—
Foreign currency forward contracts		23	Cost of sales		1
Total	$	322		$	1

Six months ended June 30, 2018	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	171	Cost of sales	$	(2)
Foreign currency forward contracts		17	Cost of sales		—
Total	$	188		$	(2)

Three months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(270)	Cost of sales	$	—
Foreign currency forward contracts		(7)	Cost of sales		3
Total	$	(277)		$	3

Six months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(391)	Cost of sales	$	—
Foreign currency forward contracts		(27)	Cost of sales		5
Total	$	(418)		$	5

Derivatives Not Designated as Hedging Instruments:

Derivatives not designated as hedging instruments include dedesignated foreign currency forward and options 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 exchange forward contracts to offset, in part, the impacts of certain intercompany transactions, foreign currency denominated debt (not otherwise in net investment hedge relationships), and to further mitigate short term currency impacts. In addition, the Company enters into commodity price swaps to offset, in part, fluctuations in costs associated with the use of certain commodities and precious metals. These derivative instruments are not designated in hedging relationships; therefore, fair value gains and losses on these contracts are recorded in earnings. 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:

	Three months ended June 30, 2018			Six months ended June 30, 2018
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	3	Cost of sales	$	—
Foreign currency forward contracts	Interest expense		(114)	Interest expense		(91)
Total		$	(111)		$	(91)

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	Three months ended June 30, 2017			Six months ended June 30, 2017
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	6	Cost of sales	$	5
Foreign currency forward contracts	Interest expense		(138)	Interest expense		(96)
Total		$	(132)		$	(91)

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. Notional amounts below are presented at period end foreign exchange rates, except interest rate swaps, which are presented using the contract inception date’s foreign exchange rate. Additional information with respect to the fair value of derivative instruments is included in Note 13.

	Gross		Assets			Liabilities
June 30, 2018	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,054	Other current assets	$	46	Other current liabilities	$	21
Foreign currency forward/option contracts		1,264	Other assets		42	Other liabilities		13
Interest rate swap contracts		1,350	Other current assets		—	Other current liabilities		7
Interest rate swap contracts		1,103	Other assets		20	Other liabilities		10
Total derivatives designated as hedging instruments				$	108		$	51
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	3,834	Other current assets	$	22	Other current liabilities	$	66
Total derivatives not designated as hedging instruments				$	22		$	66
Total derivative instruments				$	130		$	117

	Gross		Assets			Liabilities
December 31, 2017	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,204	Other current assets	$	7	Other current liabilities	$	109
Foreign currency forward/option contracts		1,392	Other assets		20	Other liabilities		56
Interest rate swap contracts		450	Other current assets		—	Other current liabilities		1
Interest rate swap contracts		1,503	Other assets		21	Other liabilities		6
Total derivatives designated as hedging instruments				$	48		$	172
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	4,974	Other current assets	$	30	Other current liabilities	$	25
Total derivatives not designated as hedging instruments				$	30		$	25
Total derivative instruments				$	78		$	197

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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 June 30, 2018, 3M has International Swaps and Derivatives Association (ISDA) agreements with 17 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 16 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 collateral had been received or pledged related to these derivative instruments.

Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Assets		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Liabilities		Received		Derivative Assets
Derivatives subject to master netting agreements	$	130	$	59	$	—	$	71
Derivatives not subject to master netting agreements		—						—
Total	$	130					$	71

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	78	$	27	$	—	$	51
Derivatives not subject to master netting agreements		—						—
Total	$	78					$	51

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Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Liabilities		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Assets		Pledged		Derivative Liabilities
Derivatives subject to master netting agreements	$	115	$	59	$	—	$	56
Derivatives not subject to master netting agreements		2						2
Total	$	117					$	58

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	197	$	27	$	—	$	170
Derivatives not subject to master netting agreements		—						—
Total	$	197					$	170

Currency Effects

3M estimates that year-on-year foreign currency transaction effects, including hedging impacts, decreased pre-tax income by approximately $27 million and $91 million for the three and six months ended June 30, 2018. These estimates include transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks.

NOTE 13.  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:

Refer to Note 14 in the Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for a qualitative discussion of the assets and liabilities that are measured at fair value on a recurring and nonrecurring basis, a description of the valuation methodologies used by 3M, and categorization within the valuation framework of ASC 820.

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

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	June 30, 2018		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Commercial paper	$	347	$	—	$	347	$	—
Certificates of deposit/time deposits		31		—		31		—
Asset-backed securities:
Automobile loan related		3		—		3		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		110		—		110		—
Interest rate swap contracts		20		—		20		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		100		—		100		—
Interest rate swap contracts		17		—		17		—

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	December 31, 2017		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Corporate debt securities	$	14	$	—	$	14	$	—
Commercial paper		899		—		899		—
Certificates of deposit/time deposits		76		—		76		—
Asset-backed securities:
Automobile loan related		16		—		16		—
Credit card related		68		—		68		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		57		—		57		—
Interest rate swap contracts		21		—		21		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		190		—		190		—
Interest rate swap contracts		7		—		7		—

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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).

	Three months ended				Six months ended
Marketable securities — certain U.S. municipal securities only	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Beginning balance	$	30	$	20	$	30	$	20
Total gains or losses:
Included in earnings		—		—		—		—
Included in other comprehensive income		—		—		—		—
Purchases and issuances		—		—		—		—
Sales and settlements		—		—		—		—
Transfers in and/or out of level 3		—		—		—		—
Ending balance	$	30	$	20	$	30	$	20
Change in unrealized gains or losses for the period included in earnings for securities held at the end of the reporting period		—		—		—		—

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 12 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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 and adjustment in carrying value of equity securities for which the measurement alternative of cost less impairment plus or minus observable price changes is used. There were no material long-lived asset impairments or adjustments to equity securities using the measurement alternative for the three and six months ended June 30, 2018 and three months ended June 30, 2017. During the six months ended June 30, 2017, the Company recognized approximately $40 million in long-lived asset impairments related to its Electronics and Energy business segment, with the complete carrying amount of such assets written off and included in operating income results.

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 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, 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:

	June 30, 2018				December 31, 2017
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	11,294	$	11,474	$	12,096	$	12,535

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 certain fixed rate Eurobond securities issued by the Company as hedging instruments of the Company’s net investment in its European subsidiaries. Many of 3M’s fixed-rate bonds were trading at a premium at June 30, 2018 and December 31, 2017 due to lower interest rates and tighter credit spreads compared to issuance levels.

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NOTE 14.  Commitments and Contingencies

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. Additional information about the Company’s process for disclosure and recording of liabilities and insurance receivables related to legal proceedings can be found in Note 15 “Commitments and Contingencies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017as updated by the Company’s Current Report on Form 8-K dated May 8, 2018.

The following sections first describe the significant legal proceedings in which the Company is involved, and then describe the liabilities and associated insurance receivables the Company has accrued relating to its significant legal proceedings.

Respirator Mask/Asbestos Litigation

As of June 30, 2018, the Company is a named defendant, with multiple co-defendants, in numerous lawsuits in various courts that purport to represent approximately 2,260 individual claimants, compared to approximately 2,230 individual claimants with actions pending at December 31, 2017.

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 it experienced at the peak of filings in 2003. 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 thirteen of the fourteen cases taken to trial, including eleven of the twelve cases tried to verdict (such trials occurred in 1999, 2000, 2001, 2003, 2004, 2007, 2015, and the cases tried in 2016, 2017, and 2018-described below), and an appellate reversal in 2005 of the 2001 jury verdict adverse to the Company. The remaining 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. In August 2016, 3M received a unanimous verdict in its favor from a jury in state court in Kentucky, in 3M’s first respirator trial involving coal mine dust. The estate of the plaintiff alleged that the 3M 8710 respirator is defective and caused his death because it did not protect him from harmful coal mine dust. The jury rejected plaintiff’s claim and returned a verdict finding no liability against 3M. The verdict is final as the plaintiff did not file an appeal. In September 2017, 3M received a unanimous verdict in its favor from a jury in state court in Kentucky in 3M’s second respirator trial involving coal mine dust. The jury ultimately determined that the plaintiff’s claims were barred by the statute of limitations. In November 2017, the court denied the plaintiff’s motion for a new trial. The plaintiff did not file an appeal, thereby ending the litigation. In February 2018, 3M received a verdict in its favor from a jury in state court in California. The plaintiff alleged that the 3M 8710 respirator was defective and caused his mesothelioma because it did not protect him from asbestos fibers. The jury rejected plaintiff’s claim and returned a verdict finding no liability against 3M. In April 2018, a jury in state court in Kentucky found 3M’s 8710 respirators failed to protect two coal miners from coal mine dust and awarded aggregate compensatory damages of approximately $2 million and punitive damages totaling $63 million. Once a judgment has been entered by the trial court, the Company plans to appeal the judgment. The Company believes liability in this case is not probable and estimable. In June 2018, the Company also settled a number of coal mine dust lawsuits for an amount that was not material to the Company.

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

37

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 medically unimpaired claimants.

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. The case was inactive from the fourth quarter of 2007 until late 2013, other than a case management conference in March 2011. In November 2013, the State filed a motion to bifurcate the lawsuit into separate liability and damages proceedings. At the hearing on the motion, the court declined to bifurcate the lawsuit. 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 lack of any meaningful discovery responses by the State of West Virginia, the otherwise 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, if any, a jury might allocate to each defendant if the case is ultimately tried.

Respirator Mask/Asbestos Liabilities and Insurance Receivables:

The Company regularly conducts a comprehensive legal review of its respirator mask/asbestos liabilities. The Company reviews recent and historical claims data, including without limitation, (i) the number of pending claims filed against the Company, (ii) the nature and mix of those claims (i.e., 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), (iii) the costs to defend and resolve pending claims, and (iv) trends in filing rates and in costs to defend and resolve claims, (collectively, the “Claims Data”). As part of its comprehensive legal review, the Company regularly provides the Claims Data to a third party with expertise in determining the impact of Claims Data on future filing trends and costs. The third party assists the Company in estimating the costs to defend and resolve pending and future claims. The Company uses these estimates to develop its best estimate of probable liability.

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 key assumptions underlying the Company’s accrual, including, the number of future claims, the nature and mix of those claims, the average cost of defending and resolving claims, and in maintaining trial readiness (ii) trial and appellate outcomes, (iii) the law and procedure applicable to these claims, and (iv) the financial viability of other co-defendants and insurers.

As a result of the Company’s review of its respirator mask/asbestos liabilities and as a result of the cost of resolving claims of persons who claim more serious injuries, including mesothelioma and other malignancies, the Company increased its accruals in the first six months of 2018 for respirator mask/asbestos liabilities by $56 million. In the first six months of 2018, the Company made payments for legal fees and settlements of $33 million related to the respirator mask/asbestos litigation. As of June 30, 2018, the Company had an accrual for respirator mask/asbestos liabilities (excluding Aearo accruals) of $631 million. This accrual represents the Company’s best estimate of probable loss and reflects an estimation period for future claims that may be filed against the Company approaching the year 2050. The Company cannot estimate the amount or upper end of the 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 or the time period in which future claims may be asserted, (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 June 30, 2018, the Company’s receivable for insurance recoveries related to the respirator mask/asbestos litigation was $4 million. The Company continues to seek coverage under the policies of certain insolvent and other insurers. Once those claims for coverage are resolved, the Company will have collected substantially all of its remaining insurance coverage for respirator mask/asbestos claims.

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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 June 30, 2018, 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 June 30, 2018, the Company, through its Aearo subsidiary, had accruals of $29 million for product liabilities and defense costs related to current and future Aearo-related asbestos and silica-related claims. This accrual represents the Company’s best estimate of Aearo’s probable loss and reflects an estimation period for future claims that may be filed against the Aearo approaching the year 2050. 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 respective 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 a quarterly fee of $100,000, Cabot will retain responsibility and liability for, and indemnify Aearo against, any product liability claims involving exposure to asbestos, silica, or silica products for respirators sold prior to July 11, 1995. Because of the difficulty in determining how long a particular respirator remains in the stream of commerce after being sold, Aearo and Cabot have applied the agreement to claims arising out of the alleged use of respirators involving exposure to asbestos, silica or silica products 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 quarterly 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.

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 insurance coverage limits, and/or (ix) 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

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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 (CERCLA) 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 section 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, federal (primarily the U.S. Environmental Protection Agency (EPA)), and international agencies of possible environmental and health effects of various perfluorinated compounds, including perfluorooctanyl compounds such as perfluorooctanoate (“PFOA”), perfluorooctane sulfonate (“PFOS”), or other per- and polyfluoroalkyl substances (collectively “PFAS”). 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 the end of 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 continues to control or eliminate the presence of certain PFAS in purchased materials or as byproducts in some of 3M’s fluorochemical manufacturing processes, products, and waste streams.

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. As the database of studies of both PFOA and PFOS has expanded, the EPA has developed human health effects documents summarizing the available data from these studies. In February 2014, the EPA initiated external peer review of its draft human health effects documents for PFOA and PFOS. The peer review panel met in August 2014. In May 2016, the EPA announced lifetime health advisory levels for PFOA and PFOS at 70 parts per trillion (ppt) (superseding the provisional levels established by the EPA in 2009 of 400 ppt for PFOA and 200 ppt for PFOS). Where PFOA and PFOS are found together, EPA recommends that the concentrations be added together, and the lifetime health advisory for PFOA and PFOS combined is also 70 ppt. Lifetime health advisories, while not enforceable, serve as guidance and are benchmarks for determining if concentrations of chemicals in tap water from public utilities are safe for public consumption. In an effort to collect exposure information under the Safe Drinking Water Act, the EPA published on May 2, 2012 a list of unregulated substances, including six PFAS, required to be monitored during the period 2013-2015 by public water system suppliers to determine the extent of their occurrence. Through January 2017, the EPA reported results for 4,920 public water supplies nationwide. Based on the 2016 lifetime health advisory, 13 public water supplies exceed the level for PFOA and 46 exceed the level for PFOS (unchanged from the July 2016 EPA summary). A technical advisory issued by EPA in September 2016 on laboratory analysis of drinking water samples stated that 65 public water supplies had exceeded the combined level for PFOA and PFOS. These results are based on one or more samples collected during the period 2012-2015 and do not necessarily reflect current conditions of these public water supplies. EPA reporting does not identify the sources of the PFOA and PFOS in the public water supplies.

The Company is continuing to make progress in its work, under the supervision of state regulators, to address its historic disposal of PFAS-containing waste associated with manufacturing operations at the Decatur, Alabama, Cottage Grove, Minnesota, and Cordova, Illinois 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 PFAS in the soil at the Company’s manufacturing facility in Decatur, Alabama. Pursuant to a permit issued by ADEM, for approximately twenty years, the Company incorporated its wastewater treatment plant sludge containing PFAS in fields at its Decatur facility. After a review of the available options to address the presence of PFAS 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 plan continues and is expected to be completed in 2018.

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 PFAS in the soil and groundwater at former disposal sites in Washington County, Minnesota (Oakdale and Woodbury) and at the Company’s manufacturing facility at

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Cottage Grove, Minnesota. Under this agreement, the Company’s principal obligations include (i) evaluating releases of certain PFAS 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 PFAS for which a HBV and/or HRL exists as a result of contamination from these sites; (iii) remediating identified sources of other PFAS 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 and Woodbury sites, and they are in an operational maintenance mode. Remediation will continue at the Cottage Grove site during 2018.

In August 2014, the Illinois EPA approved a request by the Company to establish a groundwater management zone at its manufacturing facility in Cordova, Illinois, which includes ongoing pumping of impacted site groundwater, groundwater monitoring and routine reporting of results.

In May 2017, the MDH issued new HBVs for PFOS and PFOA. The new HBVs are 35 ppt for PFOA and 27 ppt for PFOS. In connection with its announcement the MDH stated that “Drinking water with PFOA and PFOS, even at the levels above the updated values, does not represent an immediate health risk. These values are designed to reduce long-term health risks across the population and are based on multiple safety factors to protect the most vulnerable citizens, which makes them overprotective for most of the residents in our state.” In December 2017, the MDH issued a new HBV for perfluorobutane sulfonate (PFBS) of 2 ppb. In February 2018, the MDH published reports finding no unusual rates of certain cancers or adverse birth outcomes (low birth rates or premature births) among residents of Washington and Dakota counties in Minnesota.

EPA announced a four-step action plan in May 2018 regarding PFAS, which includes evaluating the need to set Safe Drinking Water Act maximum contaminant levels (MCLs) for PFOA and PFOS and beginning the steps necessary to designate PFOA and PFOS as “hazardous substances” under CERCLA.

The U.S.Agency for Toxic Substances and Disease Registry (ATSDR) within the Department of Health and Human Services released a draft Toxicological Profile for PFAS for public review and comment in June 2018. In the draft report, ATSDR proposed draft Minimal Risk Levels (MRLs) for PFOS, PFOA and several other PFAS. An MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse non-cancer health effects over a specified duration of exposure.” MRLs are not regulatory values. ATSDR recently extended the period for comment to 60 days or August 20, 2018.

In several states, the state legislature or the state environmental agency have been considering actions that would evaluate cleanup standards, groundwater values or drinking water values for PFOS, PFOA and other PFAS. States considering such actions include Michigan, New York, New Jersey, New Hampshire, Wisconsin, and Pennsylvania.

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.

Litigation Related to Historical PFAS Manufacturing Operations in Alabama

As previously reported, a former employee filed a purported class action lawsuit in 2002 in the Circuit Court of Morgan County, Alabama (the “St. John case”), 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 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. In June 2015, the plaintiffs filed an amended complaint adding additional defendants, including BFI Waste Management Systems of Alabama, LLC; BFI Waste Management of North America,

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LLC; the City of Decatur, Alabama; Morgan County, Alabama; Municipal Utilities Board of Decatur; and Morgan County, Alabama, d/b/a Decatur Utilities.

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 (the “Chandler case”) – granted the Company’s motion to abate the case, effectively putting the case on hold pending the resolution of class certification issues in the St. John case. 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 (the “Stover case”) 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 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 St. John case.

In October 2015, West Morgan-East Lawrence Water & Sewer Authority (Water Authority) filed an individual complaint against 3M Company, Dyneon, L.L.C, and Daikin America, Inc., in the U.S. District Court for the Northern District of Alabama. The complaint also includes representative plaintiffs who brought the complaint on behalf of themselves, and a class of all owners and possessors of property who use water provided by the Water Authority and five local water works to which the Water Authority supplies water (collectively, the “Water Utilities”). The complaint seeks compensatory and punitive damages and injunctive relief based on allegations that the defendants’ chemicals, including PFOA and PFOS from their manufacturing processes in Decatur, have contaminated the water in the Tennessee River at the water intake, and that the chemicals cannot be removed by the water treatment processes utilized by the Water Authority. In September 2016, the court granted 3M’s motion to dismiss plaintiffs’ trespass claims with prejudice, negligence claims for personal injuries, and private nuisance claims, and denied the motion to dismiss the plaintiffs’ negligence claims for property damage, public nuisance, abatement of nuisance, battery and wantonness.

In June 2016, the Tennessee Riverkeeper, Inc. (Riverkeeper), a non-profit corporation, filed a lawsuit in the U.S. District Court for the Northern District of Alabama against 3M; BFI Waste Systems of Alabama; the City of Decatur, Alabama; and the Municipal Utilities Board of Decatur, Morgan County, Alabama. The complaint alleges that the defendants violated the Resource Conservation and Recovery Act in connection with the disposal of certain PFAS through their ownership and operation of their respective sites. The complaint further alleges such practices may present an imminent and substantial endangerment to health and/or the environment and that Riverkeeper has suffered and will continue to suffer irreparable harm caused by defendants’ failure to abate the endangerment unless the court grants the requested relief, including declaratory and injunctive relief.

In August 2016, a group of over 200 plaintiffs filed a class action against West Morgan-East Lawrence Water and Sewer Authority (Water Authority), 3M, Dyneon, Daikin, BFI, and the City of Decatur in state court in Lawrence County, Alabama. Plaintiffs are residents of Lawrence, Morgan and other counties who are or have been customers of the Water Authority. They contend defendants have released PFAS that contaminate the Tennessee River and, in turn, their drinking water, causing damage to their health and properties. In January 2017, the court in the St. John case, discussed above, stayed this litigation pending resolution of the St. John case.

In September 2016, the Water Works and Sewer Board of the City of Gadsden, Alabama filed a lawsuit in the Circuit Court of Etowah County Alabama against 3M and various carpet manufacturers. The complaint alleges that PFAS from the defendants’ facilities contaminated the Coosa River as its raw water source for drinking water and seeks unstated damages for the installation and operation of a filtration system, expenses to monitor PFAS levels, and lost profits and sales.

In January 2017, several hundred plaintiffs sued 3M, its subsidiary Dyneon, and Daikin America in Lawrence and Morgan Counties, Alabama. The plaintiffs are owners of property, residents, and holders of property interests who receive their water from the West Morgan-East Lawrence Water and Sewer Authority (Water Authority). They assert common law claims for negligence, nuisance,

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trespass, wantonness, and battery, and they seek injunctive relief and punitive damages. The plaintiffs contend that the defendants own and operate manufacturing and disposal facilities in Decatur that have released and continue to release PFOA, PFOS and related chemicals into the groundwater and surface water of their sites, resulting in discharge into the Tennessee River. The plaintiffs also contend that the defendants have discharged into Bakers Creek and the Decatur Utilities Dry Creek Wastewater Treatment Plant, which, in turn, discharges wastewater containing these chemicals into the Tennessee River. The plaintiffs contend that, as a result the alleged discharges, the water supplied by the Water Authority to the plaintiffs was, and is, contaminated with PFOA, PFOS, and related chemicals at a level dangerous to humans.

In May 2017, the Water Works and Sewer Board of the Town of Centre, Alabama filed a lawsuit in the Circuit Court of Cherokee County Alabama against 3M, DuPont, and various carpet and textile manufacturers. The complaint alleges that PFAS from the defendants’ facilities contaminated the town’s raw water source for drinking water and seeks unstated damages for the installation and operation of a filtration system, expenses to monitor PFAS levels, lost profits and sales, and injunctive relief.

In November 2017, a purported class action was filed against 3M, its subsidiary Dyneon, Daikin America, and the West Morgan-East Lawrence Water and Sewer Authority (Water Authority) in the U.S. District Court for the Northern District of Alabama. The plaintiffs are residents of Lawrence and Morgan County, Alabama who receive their water from the Water Authority. They assert various common law claims, including negligence, nuisance, wantonness, and fraudulent concealment, and they seek injunctive relief, attorneys’ fees, compensatory and punitive damages for their alleged personal injuries. The plaintiffs contend that the defendants own and operate manufacturing and disposal facilities in Decatur that have released and continue to release PFOA, PFOS and related chemicals into the groundwater and surface water of their sites, resulting in discharge into the Tennessee River. The plaintiffs also contend that the defendants have discharged chemicals into the Decatur Utilities Dry Creek Wastewater Treatment Plant, which, in turn, discharged wastewater containing these chemicals into the Tennessee River. The plaintiffs contend that, as a result of the alleged discharges, the water supplied by the Water Authority to the plaintiffs was, and is, contaminated with PFOA, PFOS, and related chemicals at a level dangerous to humans.

In January 2018, certain property owners in Trinity, Alabama filed a lawsuit against 3M, Dyneon, and three unnamed defendants in the U.S. District Court for the Northern District of Alabama. The plaintiffs assert claims for negligence, strict liability, trespass, nuisance, wanton and reckless conduct, and citizen suit claims for violation of the Resource Conservation and Recovery Act. They allege these claims arise from the defendants’ contamination of their property by disposal of PFAS in a landfill located on their property. The plaintiffs seek compensatory and punitive damages and a court order directing the defendants to remediate all PFAS contamination on their property.

Litigation Related to Historical PFAS Manufacturing Operations in Minnesota

In July 2016, the City of Lake Elmo filed a lawsuit in the U.S. District Court for the District of Minnesota against 3M alleging that the City suffered damages from drinking water supplies contaminated with PFAS, including costs to construct alternative sources of drinking water. Trial is scheduled to begin in September 2019.

State Attorneys General Litigation related to PFAS

In December 2010, the State of Minnesota, by its Attorney General, 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 PFAS in the groundwater, surface water, fish or other aquatic life, and sediments (the “NRD Lawsuit”). The State also sought 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 PFAS into the environment, and that 3M is responsible for compensation for future loss or destruction of fish, aquatic life, and other damages under the MWPCA. In September 2017, the State’s damages expert submitted a report that contended the State incurred $5 billion in damages. In November 2017, the State of Minnesota filed a motion for leave to amend its complaint to seek punitive damages from 3M, and 3M filed a motion for summary judgment contending, among other things, that the State’s claims were barred by the applicable statute of limitations. In December 2017, the court urged the parties to attempt to resolve the litigation before trial, and in January 2018, the court appointed a mediator to facilitate that process. In February 2018, 3M and the State of Minnesota reached a resolution of the NRD Lawsuit. Under the terms of the settlement, 3M agreed to provide an $850 million grant to the State for a special “3M Water Quality and Sustainability Fund.” This Fund will enable

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projects that support water sustainability in the Twin Cities East Metro region, such as continued delivery of water to residents and enhancing groundwater recharge to support sustainable growth. The projects will also result in habitat and recreation improvements, such as fishing piers, trails, and open space preservation. 3M recorded a pre-tax charge of $897 million, inclusive of legal fees and other related obligations, in the first quarter of 2018 associated with the resolution of this matter.

In June 2018, the State of New York, by its Attorney General, filed a lawsuit in Albany Country Supreme Court against 3M, Tyco Fire Products LP, Chemguard, Inc., Buckeye Fire Equipment Co., National Foam, Inc., and Kidde-Fenwal, Inc., seeking to recover (1) the costs incurred in responding to the contamination caused by Aqueous Film Forming Foam (AFFF) manufactured by 3M and others; (2) damages for injury to, destruction of, and loss of the State’s natural resources and related recreational series; and (3) property damage.

In July 2018, the governor of Michigan requested that the Michigan Attorney General file a lawsuit against 3M and others related to PFAS in a public letter. The Michigan Attorney General has not yet determined whether he will do so.

Aqueous Film Forming Foam (AFFF) Environmental Litigation

3M manufactured and marketed AFFF for use in firefighting at airports and military bases from approximately 1963 to 2000. As of June 30, 2018, 70 putative class action and other lawsuits have been filed against 3M and other defendants in various state and federal courts in Colorado, Delaware, Florida, Massachusetts, New York, Pennsylvania, and Washington where current or former airports or military bases are or were located. In these cases, plaintiffs typically allege that certain PFAS used in AFFF contaminated the soil and groundwater where AFFF was used and seek damages for loss of use and enjoyment of properties, diminished property values, investigation costs, remediation costs, and in some cases, funds for medical monitoring. Several companies have been sued along with 3M, including Ansul Co. (acquired by Tyco, Inc.), Angus Fire, Buckeye Fire Protection Co., Chemguard, National Foam, Inc., and United Technologies Corp.

Other PFAS-related Environmental Litigation

3M manufactured and marketed certain products containing PFAS for use by customers in their manufacturing process. As of June 30, 2018, the following four cases have been filed against 3M, another manufacturer, and their customers in connection with the use and disposal of these products.

In September 2017, three complaints were filed in the U.S. District Court for the Northern District of New York against 3M, Saint-Gobain Performance Plastics Corp. (“Saint-Gobain”), Honeywell International Inc. (“Honeywell”) and E.I. DuPont De Nemours and Company. Plaintiffs allege that 3M manufactured and sold PFOA that was used for manufacturing purposes at Saint-Gobain’s and Honeywell’s facilities located in the Village of Hoosick Falls and the Town of Hoosick. Plaintiffs claim that the drinking water around Hoosick Falls became contaminated with unsafe levels of PFOA due to the activities of the defendants, and allege that they suffered bodily injury due to the ingestion and inhalation of PFOA. Plaintiffs seek unstated compensatory, consequential, and punitive damages, as well as attorneys’ fees and costs.

In December 2017, eight plaintiffs filed a class action against 3M, Wolverine World Wide and Waste Management, Inc., alleging negligence, trespass, intentional and negligent infliction of emotional distress, battery, products liability, public and private nuisance, fraudulent concealment, and unjust enrichment. Each count was filed against each defendant. The action arises from Wolverine’s allegedly improper disposal of materials and wastes related to their shoe manufacturing operations. Plaintiffs allege Wolverine used 3M Scotchgard in its manufacturing process and that chemicals from 3M’s product have contaminated the environment after being disposed of near drinking water sources.

For environmental litigation matters described above 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 any 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.

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Environmental Liabilities and Insurance Receivables

As of June 30, 2018, the Company had recorded liabilities of $30 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 $8 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 June 30, 2018, the Company had recorded liabilities of $59 million for “other environmental liabilities” based upon an evaluation of currently available facts to implement the Settlement Agreement and Consent Order with the MPCA (including the best estimate of the probable liability under the settlement of the NRD Lawsuit for interim treatment of municipal and private wells), 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.

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.

Other Matters

Department of Labor Investigation

The U.S. Department of Labor (DOL) notified 3M in April 2015 that it had commenced an investigation of 3M’s pension plan pursuant to the federal Employee Retirement Income Security Act of 1974, as amended (ERISA). The DOL has stated its investigation relates to certain private equity investments, plan expenses, securities lending, and distributions of plan benefits. In response to certain DOL requests, 3M produced documents and made employees available for interviews. In December 2016, the DOL issued certain subpoenas to 3M and 3M Investment Management Corp. relating to this investigation. 3M has produced additional responsive documents and is cooperating with the DOL in its investigation. In June 2018, the DOL issued a letter indicating that it did not intend to take further action.

Product Liability Litigation

As of June 30, 2018, the Company is a named defendant in lawsuits involving approximately 4,626 plaintiffs (compared to approximately 4,270 plaintiffs at December 31, 2017), most of which are pending in federal court in Minnesota, in which the plaintiffs claim they underwent various joint arthroplasty, cardiovascular, and other surgeries and later developed surgical site infections due to the use of the Bair Hugger™ patient warming system (the Bair Hugger™ product line was acquired by 3M as part of the 2010 acquisition of Arizant, Inc., a leading manufacturer of patient warming solutions designed to prevent hypothermia and maintain normal body temperature in surgical settings). The complaints seek damages and other relief based on theories of strict liability,

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negligence, breach of express and implied warranties, failure to warn, design and manufacturing defect, fraudulent and/or negligent misrepresentation/concealment, unjust enrichment, and violations of various state consumer fraud, deceptive or unlawful trade practices and/or false advertising acts. One case, from the U.S. District Court for the Western District of Tennessee is a putative nationwide class action. The U.S. Judicial Panel on Multidistrict Litigation (MDL) granted the plaintiffs’ motion to transfer and consolidate all cases pending in federal courts to the U.S. District Court for the District of Minnesota to be managed in a multi-district proceeding during the pre-trial phase of the litigation. In 2017, the U.S. District Court and the Minnesota state courts denied the plaintiffs’ motions to amend their complaints to add claims for punitive damages. At a joint hearing before the U.S. District Court and the Minnesota State court, on the parties’ motion to exclude each other’s experts, and 3M’s motion for summary judgment with respect to general causation, the federal court did not exclude the plaintiffs’ experts and denied 3M’s motion for summary judgment on general causation. In January 2018, the state court, in hearing the same arguments, excluded plaintiffs’ experts and granted 3M’s motion for summary judgment on general causation, dismissing all 61 cases pending before the state court in Minnesota. Plaintiffs have appealed that ruling and the state court’s punitive damages ruling. In April 2018, the federal court partially granted 3M’s motion for summary judgment in the first bellwether case, leaving for trial a claim for strict liability based upon design defect. The court dismissed the plaintiff’s claims for negligence, failure to warn, and common law and statutory fraud. In the trial of the first bellwether case in May 2018, the jury returned a unanimous verdict in 3M’s favor finding that the Bair Hugger™ patient warming system was not defective and was not the cause of the plaintiff’s injury.

In June 2016, the Company was served with a putative class action filed in the Ontario Superior Court of Justice for all Canadian residents who underwent various joint arthroplasty, cardiovascular, and other surgeries and later developed surgical site infections due to the use of the Bair Hugger™ patient warming system. The representative plaintiff seeks relief (including punitive damages) under Canadian law based on theories similar to those asserted in the MDL. No liability has been recorded for the Bair Hugger™ litigation because the Company believes that any such liability is not probable and estimable at this time.

In September 2011, 3M Oral Care launched Lava Ultimate CAD/CAM dental restorative material. The product was originally indicated for inlay, onlay, veneer, and crown applications. In June 2015, 3M Oral Care voluntarily removed crown applications from the product’s instructions for use, following reports from dentists of patients’ crowns debonding, requiring additional treatment. The product remains on the market for other applications. 3M communicated with the U.S. Food and Drug Administration, as well as regulators outside the United States. 3M also informed customers and distributors of its action, offered to accept return of unused materials and provide refunds. In May 2018, 3M reached a preliminary settlement for an amount that did not have a material impact to the Company of the lawsuit pending in the U.S. District Court for the District of Minnesota that sought certification of a class of dentists in the United States and its territories. The settlement is subject to the court’s approval and certification of the settlement class, with a right of class members to opt-out of the settlement and bring individual claims against the Company.

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.

NOTE 15.  Stock-Based Compensation

The 3M 2016 Long-Term Incentive Plan provides for the issuance or delivery of up to 123,965,000 shares of 3M common stock pursuant to awards granted under the plan. Awards 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. The remaining shares available for grant under the LTIP Program are 26.1 million as of June 30, 2018.

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. 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 ten years of service. This retiree-eligible population represents 38 percent of the annual grant stock-based compensation award expense dollars; therefore, higher stock-based compensation expense is recognized in the first quarter.

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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 three and six months ended June 30, 2018 and 2017.

Stock-Based Compensation Expense

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Cost of sales	$	9	$	9	$	32	$	32
Selling, general and administrative expenses		33		43		142		141
Research, development and related expenses		7		7		34		33
Stock-based compensation expenses	$	49	$	59	$	208	$	206
Income tax benefits	$	(19)	$	(74)	$	(117)	$	(222)
Stock-based compensation expenses (benefits), net of tax	$	30	$	(15)	$	91	$	(16)

Stock Option Program

The following table summarizes stock option activity during the six months ended June 30, 2018:

				Weighted
				Average
		Weighted		Remaining	Aggregate
	Number of	Average		Contractual	Intrinsic Value
(Options in thousands)	Options	Exercise Price		Life (months)	(millions)
Under option —
January 1	34,965	$	125.73
Granted:
Annual	3,174		233.62
Exercised	(2,378)		89.67
Forfeited	(73)		186.24
June 30	35,688	$	137.60	71	$	2,226
Options exercisable
June 30	27,222	$	120.84	60	$	2,066

Stock options vest over a period from one year to three years with the expiration date at 10 years from date of grant. As of June 30, 2018, there was $102 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 23 months. The total intrinsic values of stock options exercised were $345 million and $465 million during June 30, 2018 and 2017, respectively. Cash received from options exercised was $212 million and $416 million for the six months ended June 30, 2018 and 2017, respectively. The Company’s actual tax benefits realized for the tax deductions related to the exercise of employee stock options were $73 million and $158 million for the six months ended June 30, 2018 and 2017, respectively.

For the primary 2018 annual stock option grant, the weighted average fair value at the date of grant was calculated using the Black-Scholes option-pricing model and the assumptions that follow.

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Stock Option Assumptions

	Annual
	2018
Exercise price	$	233.63
Risk-free interest rate		2.7	%
Dividend yield		2.4	%
Expected volatility		21.0	%
Expected life (months)		78
Black-Scholes fair value	$	41.59

Expected volatility is a statistical measure of the amount by which a stock price is expected to fluctuate during a period. For the 2018 annual grant date, the Company estimated the expected volatility based upon the following three volatilities of 3M stock: the median of the term of the expected life rolling volatility; the median of the most recent term of the expected life volatility; and the implied volatility on the grant date. The expected term assumption is based on the weighted average of historical grants.

Restricted Stock and Restricted Stock Units

The following table summarizes restricted stock and restricted stock unit activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Nonvested balance —
As of January 1	1,994	$	162.60
Granted
Annual	467		233.61
Other	3		209.26
Vested	(632)		164.37
Forfeited	(22)		177.93
As of June 30	1,810	$	180.22

As of June 30, 2018, there was $110 million of compensation expense that has yet to be recognized related to non-vested restricted stock units and restricted stock. This expense is expected to be recognized over the remaining weighted-average vesting period of 24 months. The intrinsic value of restricted stock units and restricted stock that vested during the six months ended June 30, 2018 and 2017 was $154 million and $134 million, respectively. The Company’s actual tax benefits realized for the tax deductions related to the vesting of restricted stock units and restricted stock was $29 million and $44 million for the six months ended June 30, 2018 and 2017, respectively.

Restricted stock units granted generally vest three years following the grant date assuming continued employment. 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. 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

Instead of restricted stock units, the Company makes annual grants of performance shares to members of its executive management. The 2018 performance criteria for these performance shares (organic volume growth, return on invested capital, free cash flow conversion, and earning per share growth) were selected because the Company believes that they are important drivers of long-term stockholder value. 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

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Company during such performance period. When granted, these performance shares are awarded at 100% of the estimated number of shares at the end of the three-year performance period and are reflected under “Granted” in the table below. 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 2018 performance share grant accrues dividends, therefore the grant date fair value is equal to the closing stock price on the date of grant. Since the rights to dividends are forfeitable, there is no impact on basic earnings per share calculations. Weighted average performance shares whose performance period is complete are included in computation of diluted earnings per share.

The following table summarizes performance share activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Undistributed balance —
As of January 1	686	$	171.90
Granted	156		231.34
Distributed	(206)		159.82
Performance change	2		249.07
Forfeited	(11)		194.69
As of June 30	627	$	190.52

As of June 30, 2018, there was $43 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. The total fair values of performance shares that were distributed were $48 million and $55 million for the six months ended June 30, 2018 and 2017, respectively. The Company’s actual tax benefits realized for the tax deductions related to the distribution of performance shares were $11 million and $15 million for the six months ended June 30, 2018 and 2017, respectively.

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NOTE 16.  Business Segments

3M’s businesses are organized, managed and internally grouped into segments based on differences in markets, products, technologies and services. 3M manages its operations in five business segments: Industrial; Safety and Graphics; Health Care; Electronics and Energy; 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. 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, along with non-service cost components of pension and postretirement net periodic benefit costs.

As part of 3M’s continuing effort to improve the alignment of its businesses around markets and customers, the Company made the following changes, effective in the first quarter of 2018, and other revisions impacting business segment reporting:

Consolidation of customer account activity within international countries – expanding dual credit reporting

· The Company consolidated its customer account activity in each country into centralized sales districts for certain countries that make up approximately 70 percent of 3M’s 2017 international net sales. Expansion of these initiatives, which previously had been deployed only in the U.S., reduces the complexity for customers when interacting with multiple 3M businesses. 3M business segment reporting measures include dual credit to business segments for certain sales and related operating income. This dual credit is based on which business segment provides customer account activity with respect to a particular product sold in a specific country. The expansion of alignment of customer accounts within additional countries increased the attribution of dual credit across 3M’s business segments. Additionally, certain sales and operating income results for electronic bonding product lines that were previously equally divided between the Electronics and Energy business segment and the Industrial business segment are now reported similarly to dual credit.

Centralization of manufacturing and supply technology platforms

· Certain shared film manufacturing and supply technology platform resources formerly reflected within the Electronics and Energy business segment were combined with other shared and centrally managed material resource centers of expertise within Corporate and Unallocated.

In addition, as discussed in Note 1, 3M adopted ASU N0. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. As a result, operating income for 3M’s business segments has been revised to reflect non-service cost components of pension and postretirement net periodic benefit costs within other expense (income), net.

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

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Business Segment Information

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Net Sales
Industrial	$	3,148	$	2,946	$	6,292	$	5,882
Safety and Graphics		1,815		1,569		3,598		3,119
Health Care		1,520		1,449		3,056		2,884
Electronics and Energy		1,337		1,290		2,687		2,581
Consumer		1,223		1,169		2,350		2,242
Corporate and Unallocated		12		2		12		3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495
Operating Income
Industrial	$	724	$	568	$	1,443	$	1,238
Safety and Graphics		480		851		963		1,250
Health Care		435		408		895		837
Electronics and Energy		865		325		1,202		581
Consumer		261		198		479		421
Corporate and Unallocated		(206)		(51)		(1,252)		(144)
Elimination of Dual Credit		(158)		(146)		(322)		(288)
Total Company	$	2,401	$	2,153	$	3,408	$	3,895

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. Corporate and Unallocated also includes sales, costs, and income from contract manufacturing, transition services and other arrangements with the acquirer of substantially all of the Communication Markets Division following its divestiture in June 2018. 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 sales and related operating income. Management evaluates each of its five business segments based on net sales and operating income performance, including dual credit reporting to further incentivize sales growth. As a result, 3M reflects additional (“dual”) credit to another business segment when the customer account activity (“sales district”) with respect to the particular product sold to the external customer is provided by a different business segment. This additional dual credit is largely reflected at the division level. For example, certain respirators are primarily sold by the Personal Safety Division within the Safety and Graphics business segment; however, a sales district within the Industrial business segment provides the contact for sales of the product to particular customers. In this example, the non-primary selling segment (Industrial) would also receive credit for the associated net sales initiated through its sales district 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 in total are unchanged.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM*

To the Shareholders and Board of Directors of 3M Company

Results of Review of Financial Statements

We have reviewed the accompanying consolidated balance sheet of 3M Company and its subsidiaries as of June 30, 2018 and the related consolidated statements of income and comprehensive income for the three-month and six-month periods ended June 30, 2018 and 2017 and the consolidated statements of cash flowsfor the six-month periods ended June 30, 2018 and 2017,including the related notes (collectively referred to as the “interim financial statements”).  Based on our reviews, we are not aware of any material modifications that should be made to the accompanying interim financial statements for them to be in conformity with accounting principles generally accepted in the United States of America.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidatedbalance sheet of the Company as of December 31, 2017, and the related consolidated statements of income and comprehensive income, of changes in equity, and of cash flows for the year then ended (not presented herein), and in our report dated February 8, 2018, except for the change in the manner in which the Company presents and classifies certain pension and postretirement net periodic benefit costs in the statement of income discussed in Notes 1 and 5 and in the composition of reportable segments discussed in Notes 3 and 17, as to which the date is May 8, 2018, we expressed an unqualified opinion on those consolidated financial statements.  In our opinion, the information set forth in the accompanying consolidated balance sheet information as of December 31, 2017, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

Basis for Review Results

These interim financial statements are the responsibility of the Company’s management.We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.  We conducted our review in accordance with the standards of the PCAOB.  A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters.  It is substantially less in scope than an audit conducted in accordance with the standards of the PCAOB, the objective of which is the expression of an opinion regarding the financial statements taken as a whole.  Accordingly, we do not express such an opinion.

/s/ PricewaterhouseCoopers LLP

Minneapolis, Minnesota

July 26, 2018

*Pursuant to Rule 436(c) of the Securities Act of 1933 (“Act”) this should not be considered a “report” within the meaning of Sections 7 and 11 of the Act and the independent registered public accounting firm liability under Section 11 does not extend to it.

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Item 2.  Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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 the following sections:

· Overview

· Results of Operations

· Performance by Business Segment

· Financial Condition and Liquidity

· Cautionary Note Concerning Factors That May Affect Future Results

Forward-looking statements in Part I, Item 2 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 Part I, Item 2 and the risk factors provided in Part II, Item 1A for discussion of these risks and uncertainties).

OVERVIEW

3M is a diversified global manufacturer, technology innovator and marketer of a wide variety of products and services. As more fully described in both the Performance by Business Segment section in MD&A and in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of businesses around markets and customers. These changes included consolidation of customer account activity into centralized sales districts within certain countries that make up approximately 70 percent of 3M’s 2017 international net sales, impacting dual credit reporting, in addition to the centralization of manufacturing and supply technology platforms within Corporate and Unallocated. Business segment 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; Health Care; Electronics and Energy; and Consumer. From a geographic perspective, any references to EMEA refer to Europe, Middle East and Africa on a combined basis.

Earnings per share attributable to 3M common shareholders – diluted:

The following table provides the increase (decrease) in diluted earnings per share for the three and six months ended June 30, 2018 compared to 2017.

	Three months ended		Six months ended
(Earnings per diluted share)	June 30, 2018		June 30, 2018
Same period last year	$	2.58	$	4.74
Increase/(decrease) in earnings per share - diluted, due to:
2017 divestiture of identity management business		(0.54)		(0.54)
Organic growth/productivity and other		0.47		0.64
Foreign exchange impacts		0.01		0.06
Legal-related charges		(0.07)		(0.07)
Other expense		(0.06)		(0.12)
Income tax rate, excluding Tax Cuts and Jobs Act (TCJA) measurement period adjustment		0.16		0.34
Shares of common stock outstanding		0.04		0.03
2018 divestiture of Communication Markets Division, net of related restructuring actions		0.48		0.48
Current period, excluding MN Natural Resource Damages (NRD) resolution and TCJA measurement period adjustment	$	3.07	$	5.56
TCJA measurement period adjustment		—		(0.36)
MN NRD resolution		—		(1.16)
Current period	$	3.07	$	4.04

For the second quarter of 2018, net income attributable to 3M was $1.857 billion, or $3.07 per diluted share compared to $1.583 billion or $2.58 per diluted share in the same period last year, an increase of 19 percent on a per diluted share basis. For the first six

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months of 2018, net income attributable to 3M was $2.459 billion, or $4.04 per diluted share compared to $2.906 billion or $4.74 per diluted share in the same period last year, a decrease of 15 percent on a per diluted share basis. Excluding the first quarter 2018 pre-tax impact of $897 million related to the resolution of the Minnesota natural resource damages (NRD) matter and the $217 million measurement period adjustment relative to the accounting for the 2017 enactment of the Tax Cuts and Jobs Act (TCJA), net income was $3.386 billion, or $5.56 per diluted share, an increase of 17 percent on a per diluted share basis compared to the first six months of 2017. The Company refers to various measures excluding the Minnesota NRD resolution and TCJA measurement period adjustment. These non-GAAP measures are further described and reconciled to the most directly comparable GAAP financial measures in the section that follows.

Additional discussion related to the components of the year-on-year change in earnings per diluted share follows:

2017 divestiture of identity management business:

· In May 2017, 3M completed the related sale or transfer of control, as applicable of its identity management business and reflected a pre-tax gain of $457 million, which was reported within the Company’s Safety and Graphics business. The earnings per share impact reflects the specific income tax rate used for this divestiture.

Organic growth/productivity and other:

· Second quarter and first six months year-on-year benefits include higher organic local-currency sales, selling price increases, and business transformation, which is having a positive impact on 3M’s productivity efforts. Higher raw material costs partially offset these year-on-year benefits.

· Lower year-on-year restructuring (other than activity related to the Communication Markets Division divestiture) and portfolio and footprint actions increased pre-tax earnings by approximately $136 million and $226 million in the second quarter and first six months of 2018, respectively. These charges included $24 million related to exit activities and $80 million in asset charges, accelerated depreciation and other costs taken in the first quarter of 2017 in addition to $99 million in restructuring actions and $51 million in asset charges, accelerated depreciation and other costs taken in the second quarter of 2017.

· In aggregate, acquisitions, year-on-year divestitures gains (other than the sale of the Communication Markets Division and identity management business) in addition to lost operating income from divested businesses had a neutral impact on earnings per diluted share year-on-year for the second quarter of 2018 and increased earnings per diluted share by 1 cent for the first six months of 2018.

o Acquisition impacts, which are measured for the first twelve months post-transaction, increased earnings per diluted share by 2 cents and 4 cents for the second quarter and first six months of 2018, respectively, and related primarily to the acquisition of Scott Safety (fourth quarter 2017).

o The lower year-on-year pre-tax gain on other divestitures (other than the sale of the Communication Markets Division and identity management business), including lost operating income from divested businesses, decreased earnings per diluted share by 2 cents and 3 cents year-on-year for the second quarter and first six months of 2018, respectively. Additional discussion on divestitures is provided in Note 3.

Foreign exchange impacts:

· Foreign currency impacts (net of hedging) increased pre-tax earnings by approximately $5 million and $50 million, or the equivalent of 1 cent and 6 cents per diluted share, for the second quarter and first six months of 2018, respectively, excluding the impact of foreign currency changes on tax rates.

Legal-related charges

· In the second quarter of 2018, 3M reached agreements in principle on a number of respiratory mask/asbestos claims and an oral care product liability matter, the implications of which resulted in an increase in certain legal accruals. Refer to Note 14 for further details.

Other expense:

· Second quarter and first six month’s interest expense (net of interest income) increased $30 million and $54 million year-on-year, respectively, as a result of higher U.S. average debt balances and higher borrowing costs.

· On a combined basis, higher defined benefit pension and postretirement service cost expense and defined contribution expense, in addition to lower income related to non-service cost components of pension and postretirement expense, increased expense year-on-year.

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Income tax rate, excluding Tax Cuts and Jobs Act (TCJA) measurement period adjustment:

· The effective tax rate for the second quarter of 2018 was 20.8 percent, a decrease of 5.2 percentage points versus 2017. The effective tax rate for the first six months of 2018 was 25.6 percent, an increase of 0.6 percentage points versus 2017.

· The effect of income taxes on items that had specific tax rates are reflected within their respective diluted earnings per share impacts in the table above for both the three and six months ended June 30, 2018. Additionally, as discussed in the section below, excluding the Minnesota NRD Resolution and measurement period adjustment related to TCJA, the effective income tax rate was 19.4 percent in first six months of 2018, a decrease of 5.6 percentage points versus 2017.

· Factors that decreased the effective tax rate for the second quarter of 2018 primarily related to the favorable aspects of the TCJA such as the decrease in the U.S. income tax rate and provisions incentivizing foreign-derived intangible income (FDII), in addition to impacts associated with composition of geographic mix of income before taxes. This decrease was partially offset by the unfavorable changes related to lower excess tax benefits related to employee share-based payments and impacts of TCJA, such as the global intangible low-taxed income (GILTI) provision and the elimination of the domestic manufacturing deduction Refer to Note 8 for additional details.

Shares of common stock outstanding:

· Lower shares outstanding increased earnings per share by 4 cents and 3 cents per diluted share for the second quarter and first six months of 2018, respectively. Weighted-average diluted shares outstanding in the second quarter and first six months of 2018 declined 1.4 percent and 0.6 percent year-on-year, respectively, which benefited earnings per share. The decrease in the outstanding weighted-average diluted shares relates to the Company’s purchase of $1.6 billion and $2.5 billion of its own stock in the second quarter and first six months of 2018, respectively.

2018 divestiture of Communication Markets Division, net of related restructuring actions and exit activities:

· In June 2018, 3M completed the sale of substantially all of its Communication Markets Division and reflected a pre-tax gain of $494 million as a result of this divestiture, which was reported within the Company’s Electronics and Energy business.  During the second quarter of 2018, management approved and committed to undertake certain restructuring actions related to addressing corporate functional costs following the Communication Markets Division divestiture. These actions affected approximately 900 positions worldwide and resulted in a second quarter 2018 pre-tax charge of $105 million. The aggregate net impact of the gain on sale and related restructuring actions increased earnings per share by 48 cents per diluted share for both the second quarter and first six months of 2018 and reflects the specific income tax rate associated with these items.

Operating income, operating income margin, income before taxes, net income, earnings per share, and effective tax rate adjusted for impacts of the Minnesota NRD resolution and the measurement period adjustment to the impact of the enactment of the Tax Cuts and Jobs Act (TCJA) - (non-GAAP measures):

As further discussed in Note 14, in February 2018, 3M reached an agreement with the State of Minnesota that resolved the previously disclosed Natural Resource Damages (NRD) lawsuit filed by the State against the Company related to certain PFAS present in the environment. Under the terms of the settlement, 3M agreed to provide an $850 million grant to the State for a special “3M Water Quality and Sustainability Fund.” This Fund will enable projects that support water sustainability in the Twin Cities East Metro region, such as continued delivery of water to residents and enhancing groundwater recharge to support sustainable growth. The projects will also result in habitat and recreation improvements, such as fishing piers, trails, and open space preservation. 3M recorded a pre-tax charge of $897 million, inclusive of legal fees and other related obligations, in the first quarter of 2018 associated with the resolution of this matter.

As further described in Note 8, during the first quarter of 2018, 3M recorded a tax expense of $217 million related to a measurement period adjustment to the provisional amounts recorded in December 2017, from the enactment of the Tax Cuts and Jobs Act (TCJA). 3M’s provisional accounting continues to be subject to adjustment during the measurement period of up to one year following the December 2017 enactment of TCJA.

In addition to reporting financial results in accordance with U.S. GAAP, the Company also provides non-GAAP measures that adjust for the impacts of the NRD resolution and measurement period adjustment to the impact of enactment of the TCJA. These items represent significant charges that impacted the Company’s financial results. Operating income, income before taxes, net income, earnings per share, and the effective tax rate are all measures for which 3M provides the reported GAAP measure and an adjusted measure. The adjusted measures are not in accordance with, nor are they a substitute for, GAAP measures. The Company considers

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these non-GAAP measures in evaluating and managing the Company’s operations. The Company believes that discussion of results adjusted for these items is meaningful to investors as it provides a useful analysis of ongoing underlying operating trends. The determination of these items may not be comparable to similarly titled measures used by other companies.

		Six months ended June 30,
		2017			2018
Adjusted income, operating income margin, earnings per share, & effective tax rate (non-GAAP measures) (Dollars in millions, except per share amounts)		Reported GAAP Measure			Reported GAAP Measure			Adjustment for Measurement Period Accounting of TCJA		Adjustment for MN NRD Resolution		Adjusted Non-GAAP Measure
Net sales	$	15,495		$	16,668		$	—	$	—	$	16,668
Operating income	$	3,895		$	3,408		$	—	$	897	$	4,305
Operating income margin		25.1	%		20.4	%						25.8	%
Income before taxes	$	3,879		$	3,315		$	—	$	897	$	4,212
Provision for income taxes	$	968		$	847		$	(217)	$	187	$	817
Effective tax rate		25.0	%		25.6	%						19.4	%
Net income attributable to 3M	$	2,906		$	2,459		$	217	$	710	$	3,386
Earnings per diluted share	$	4.74		$	4.04		$	0.36	$	1.16	$	5.56
Earnings per diluted share percent change					(14.8)	%						17.3	%

Sales and operating income by business segment:

The following tables contain sales and operating income results by business segment for the three and six months ended June 30, 2018 and 2017. Refer to the section entitled “Performance by Business Segment” later in MD&A for additional discussion concerning 2018 versus 2017 results, including Corporate and Unallocated. Refer to Note 16 for additional information on business segments, including Elimination of Dual Credit.

	Three months ended June 30,
	2018				2017				% change
	Net		Oper.		Net		Oper.		Net		Oper.
(Dollars in millions)	Sales		Income		Sales		Income		Sales		Income
Business Segments
Industrial	$	3,148	$	724	$	2,946	$	568	6.8	%	27.4	%
Safety and Graphics		1,815		480		1,569		851	15.8		(43.6)
Health Care		1,520		435		1,449		408	4.9		6.7
Electronics and Energy		1,337		865		1,290		325	3.6		166.8
Consumer		1,223		261		1,169		198	4.6		32.3
Corporate and Unallocated		12		(206)		2		(51)	—		—
Elimination of Dual Credit		(665)		(158)		(615)		(146)	—		—
Total Company	$	8,390	$	2,401	$	7,810	$	2,153	7.4	%	11.5	%

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	Six months ended June 30,
	2018				2017				% change
	Net		Oper.		Net		Oper.		Net		Oper.
(Dollars in millions)	Sales		Income		Sales		Income		Sales		Income
Business Segments
Industrial	$	6,292	$	1,443	$	5,882	$	1,238	7.0	%	16.5	%
Safety and Graphics		3,598		963		3,119		1,250	15.4	%	(23.0)	%
Health Care		3,056		895		2,884		837	6.0	%	6.8	%
Electronics and Energy		2,687		1,202		2,581		581	4.1	%	107.0	%
Consumer		2,350		479		2,242		421	4.8	%	13.8	%
Corporate and Unallocated		12		(1,252)		3		(144)	—		—
Elimination of Dual Credit		(1,327)		(322)		(1,216)		(288)	—		—
Total Company	$	16,668	$	3,408	$	15,495	$	3,895	7.6	%	(12.5)	%

	Three months ended June 30, 2018
Worldwide Sales Change	Organic local-								Total sales
By Business Segment	currency sales		Acquisitions		Divestitures		Translation		change
Industrial	5.7	%	—	%	(0.1)	%	1.2	%	6.8	%
Safety and Graphics	8.5		10.5		(4.2)		1.0		15.8
Health Care	3.8		0.1		—		1.0		4.9
Electronics and Energy	5.2		—		(2.7)		1.1		3.6
Consumer	4.3		—		—		0.3		4.6
Total Company	5.6	%	2.1	%	(1.3)	%	1.0	%	7.4	%

	Six months ended June 30, 2018
Worldwide Sales Change	Organic local-								Total sales
By Business Segment	currency sales		Acquisitions		Divestitures		Translation		change
Industrial	4.0	%	—	%	(0.1)	%	3.1	%	7.0	%
Safety and Graphics	7.7		10.2		(5.4)		2.9		15.4
Health Care	3.3		0.1		—		2.6		6.0
Electronics and Energy	3.4		—		(1.4)		2.1		4.1
Consumer	3.3		—		—		1.5		4.8
Total Company	4.3	%	2.0	%	(1.3)	%	2.6	%	7.6	%

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Sales by geographic area:

Percent change information compares the second quarter and first six months of 2018 with the same period last year, unless otherwise indicated. From a geographic perspective, any references to EMEA refer to Europe, Middle East and Africa on a combined basis.

	Three months ended June 30, 2018
							Europe,			Latin
	United			Asia			Middle East			America/			Other
	States			Pacific			& Africa			Canada			Unallocated		Worldwide
Net sales (millions)	$	3,348		$	2,504		$	1,758		$	781		$	(1)	$	8,390
% of worldwide sales		39.9	%		29.8	%		21.0	%		9.3	%		—		100.0	%
Components of net sales change:
Volume — organic		4.6	%		5.1	%		4.0	%		3.9	%		—		4.5	%
Price		1.0			0.4			1.8			2.1			—		1.1
Organic local-currency sales		5.6			5.5			5.8			6.0			—		5.6
Acquisitions		2.8			0.8			3.1			0.9			—		2.1
Divestitures		(1.3)			(0.6)			(2.0)			(1.5)			—		(1.3)
Translation		—			2.2			2.6			(2.3)			—		1.0
Total sales change		7.1	%		7.9	%		9.5	%		3.1	%		—		7.4	%
Total sales change:
Industrial		6.2	%		7.6	%		9.5	%		1.4	%		—		6.8	%
Safety and Graphics		16.8	%		13.1	%		21.9	%		5.6	%		—		15.8	%
Health Care		0.8	%		11.6	%		7.7	%		5.6	%		—		4.9	%
Electronics and Energy		4.7	%		5.1	%		(3.6)	%		(5.7)	%		—		3.6	%
Consumer		7.0	%		2.3	%		0.1	%		0.2	%		—		4.6	%
Organic local-currency sales change:
Industrial		6.1	%		4.5	%		7.2	%		5.2	%		—		5.7	%
Safety and Graphics		8.2	%		8.1	%		10.2	%		6.3	%		—		8.5	%
Health Care		0.7	%		9.1	%		4.7	%		7.7	%		—		3.8	%
Electronics and Energy		9.2	%		4.4	%		5.4	%		1.8	%		—		5.2	%
Consumer		7.0	%		0.6	%		(2.5)	%		4.4	%		—		4.3	%

Additional information beyond what is included in the preceding table is as follows:

· In the Asia Pacific geographic area, China/Hong Kong total sales increased 17 percent and organic local-currency sales increased 12 percent. In Japan, total sales were flat, as organic local-currency sales decreases of 2 percent were offset by foreign currency translation impacts. Excluding electronics, Japan had a total sales increase of 6 percent, while organic local-currency sales increased 4 percent.

· In the EMEA geographic area, Central/East Europe and Middle East/Africa had total sales increase by 4 percent, with organic local-currency sales increases of 7 percent. West Europe total sales grew 11 percent, driven by organic local-currency sales increases of 6 percent and foreign currency translation impacts.

· In the Latin America/Canada geographic area, total sales increased 2 percent in Mexico, as organic local-currency sales increased 5 percent. In Canada, total sales increased 12 percent, driven by organic local-currency sales growth of 8 percent. In Brazil, total sales decreased 8 percent, as organic local-currency sales growth of 4 percent was more than offset by foreign currency translation impacts.

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	Six months ended June 30, 2018
							Europe,			Latin
	United			Asia			Middle East			America/			Other
	States			Pacific			& Africa			Canada			Unallocated		Worldwide
Net sales (millions)	$	6,392		$	5,180		$	3,550		$	1,548		$	(2)	$	16,668
% of worldwide sales		38.3	%		31.1	%		21.3	%		9.3	%		—		100.0	%
Components of net sales change:
Volume — organic		3.1	%		4.9	%		1.4	%		3.3	%		—		3.4	%
Price		0.9			0.2			1.6			1.5			—		0.9
Organic local-currency sales		4.0			5.1			3.0			4.8			—		4.3
Acquisitions		2.7			0.7			3.1			1.0			—		2.0
Divestitures		(1.4)			(0.6)			(2.0)			(1.4)			—		(1.3)
Translation		—			3.7			7.5			(0.7)			—		2.6
Total sales change		5.3	%		8.9	%		11.6	%		3.7	%		—		7.6	%
Total sales change:
Industrial		3.9	%		9.1	%		11.2	%		2.4	%		—		7.0	%
Safety and Graphics		14.7	%		14.3	%		23.1	%		5.3	%		—		15.4	%
Health Care		1.3	%		13.3	%		9.7	%		6.1	%		—		6.0	%
Electronics and Energy		1.9	%		6.1	%		(1.1)	%		(2.6)	%		—		4.1	%
Consumer		5.6	%		3.7	%		5.5	%		1.9	%		—		4.8	%
Organic local-currency sales change:
Industrial		3.9	%		4.5	%		3.5	%		4.3	%		—		4.0	%
Safety and Graphics		7.5	%		8.6	%		8.2	%		5.1	%		—		7.7	%
Health Care		1.2	%		8.8	%		2.2	%		6.4	%		—		3.3	%
Electronics and Energy		4.1	%		4.1	%		(1.2)	%		0.8	%		—		3.4	%
Consumer		5.6	%		(0.1)	%		(1.6)	%		3.5	%		—		3.3	%

Additional information beyond what is included in the preceding table is as follows:

· In the Asia Pacific geographic area, China/Hong Kong total sales increased 18 percent and organic local-currency sales increased 11 percent. In Japan, total sales increased 2 percent, which was driven by foreign currency translation impacts, as organic local-currency sales decreased 1 percent. Excluding electronics, Japan had a total sales increase of 7 percent, while organic local-currency sales increased 4 percent.

· In the EMEA geographic area, Central/East Europe and Middle East/Africa had both total and organic local-currency sales increases of 6 percent. West Europe total sales grew 13 percent, driven by foreign currency translation impacts, while organic local-currency sales increased 2 percent.

· In the Latin America/Canada geographic area, total sales increased 3 percent in Mexico, as organic local-currency sales increased 4 percent. In Canada, total sales increased 11 percent, driven by organic local-currency sales growth of 7 percent in addition to foreign currency translation impacts. In Brazil, total sales decreased 4 percent, as organic local-currency sales growth of 4 percent was more than offset by foreign currency translation impacts.

Managing currency risks:

The weaker U.S. dollar had a positive impact on sales and earnings in the first six months of 2018 compared to the same periods last year. 3M utilizes a number of tools to hedge currency risk related to earnings. 3M uses natural hedges such as pricing, productivity, hard currency and hard currency-indexed billings, and localizing source of supply. 3M also uses financial hedges to mitigate currency risk. In the case of more liquid currencies, 3M hedges a portion of its aggregate exposure, using a 12, 24 or 36 month horizon, depending on the currency in question. For less liquid currencies, financial hedging is frequently more expensive with more limitations on tenor. Thus this risk is largely managed via local operational actions using natural hedging tools as discussed above. In either case, 3M’s hedging approach is designed to mitigate a portion of foreign currency risk and reduce volatility, ultimately allowing time for 3M’s businesses to respond to changes in the marketplace.

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Financial condition:

3M generated $2.042 billion of operating cash flows in the first six months of 2018, a decrease of $588 million when compared to the first six months of 2017, with this decrease primarily due to the Minnesota NRD resolution. Refer to the section entitled “Financial Condition and Liquidity” later in MD&A for a discussion of items impacting cash flows.

In February 2016, 3M’s Board of Directors authorized the repurchase of up to $10 billion of 3M’s outstanding common stock, with no pre-established end date. In the first six months of 2018, the Company purchased $2.5 billion of its own stock, compared to $1.2 billion of stock purchases in the first six months of 2017. As of June 30, 2018, approximately $2.6 billion remained available under the February 2016 authorization. The Company expects to purchase $4.0 billion to $5.0 billion of its own stock in 2018. In January 2018, 3M’s Board of Directors declared a first-quarter 2018 dividend of $1.36 per share, an increase of 16 percent. This marked the 60th consecutive year of dividend increases for 3M. In May 2018, 3M’s Board of Directors declared a second quarter 2018 dividend of $1.36 per share.

3M currently has an AA- credit rating with a stable outlook from Standard & Poor’s and has an A1 credit rating with a stable outlook from Moody’s Investors Service. The Company generates significant ongoing cash flow and has proven access to capital markets funding throughout business cycles.

3M expects to contribute approximately $300 million to $500 million of cash to its global defined benefit pension and postretirement plans in 2018. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2018.

RESULTS OF OPERATIONS

Net Sales:

Refer to the preceding “Overview” section and the “Performance by Business Segment” section later in MD&A for additional discussion of sales change.

Operating Expenses:

	Three months ended						Six months ended
	June 30,						June 30,
(Percent of net sales)	2018		2017		Change		2018		2017		Change
Cost of sales	50.3	%	51.5	%	(1.2)	%	50.9	%	51.0	%	(0.1)	%
Selling, general and administrative expenses	21.5		20.7		0.8		26.2		20.9		5.3
Research, development and related expenses	5.6		6.1		(0.5)		5.7		6.2		(0.5)
Gain on sale of businesses	(6.0)		(5.9)		(0.1)		(3.2)		(3.2)		—
Operating income margin	28.6	%	27.6	%	1.0	%	20.4	%	25.1	%	(4.7)	%

3M expects global defined benefit pension and postretirement service cost expense in 2018 to increase by approximately $29 million pre-tax when compared to 2017,  which impacts cost of sales; selling, general and administrative expenses (SG&A); and research, development and related expenses (R&D). The year-on-year increase in defined benefit pension and postretirement service cost expense and defined contribution expense for the second quarter and first six months of 2018 was approximately $11 million and $25 million, respectively.

The Company is investing in an initiative called business transformation, with these investments impacting cost of sales, SG&A, and R&D. Business transformation encompasses the ongoing multi-year phased implementation of an enterprise resource planning (ERP) system on a worldwide basis, as well as changes in processes and internal/external service delivery across 3M.

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Cost of Sales:

Cost of sales includes manufacturing, engineering and freight costs.

Cost of sales, measured as a percent of sales, decreased in the second quarter and first six months of 2018 due to foreign currency effects (net of hedge losses), 2017 portfolio and supply chain footprint optimization charges that did not repeat in 2018, and selling price increases. Selling prices increased net sales year-on-year by 1.1 percent and 0.9 percent in second quarter and first six months of 2018, respectively. These were partially offset by raw material cost increases and higher defined benefit pension and postretirement service cost expense and defined contribution expense. Additionally in the second quarter of 2018, cost of sales were increased by Communication Markets Division related restructuring charges as discussed in Note 5.

Selling, General and Administrative Expenses:

SG&A in dollars increased 11.1 percent and 35.2 percent in the second quarter and first six months of 2018, respectively, when compared to the same period last year. The increase in the second quarter of 2018 is primarily associated with the Communication Markets Division-related restructuring charges discussed in Note 5, with the first six months of 2018 additionally impacted by the charge related to the Minnesota NRD resolution (as discussed earlier in the “Operating income, operating income margin, income before taxes, net income, earnings per share, and effective tax rate adjusted for impacts of the Minnesota NRD resolution and the measurement period adjustment to the impact of the enactment of the Tax Cuts and Jobs Act (TCJA) - (non-GAAP measures)” section and further in Note 14). These increases were partially offset by 2017 portfolio and supply chain footprint optimization charges that did not repeat in 2018.

Research, Development and Related Expenses:

R&D in dollars decreased $10 million in the second quarter of 2018 and were flat in the first six months of 2018, when compared to the same period last year. 3M continued to invest in its key initiatives, including R&D aimed at disruptive innovation programs with the potential to create entirely new markets and disrupt existing markets.

Gain on Sale of Businesses:

In the first quarter of 2018, 3M closed on the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring. In addition, 3M divested a polymer additives compounding business, formerly part of the Company’s Industrial business, and reflected a gain on final closing adjustments from a prior divestiture which, in aggregate, were not material. These divestitures resulted in a gain on sale of businesses of $24 million.

In the second quarter of 2018, 3M completed the sale of substantially all of its Communication Markets Division to Corning Incorporated. This business consists of optical fiber and copper passive connectivity solutions for the telecommunications industry including 3M’s xDSL, FTTx, and structured cabling solutions and, in certain countries, telecommunications system integration services. This divestiture resulted in a gain on sale of $494 million, which was reported within the Company’s Electronics and Energy business. 3M also divested an abrasives glass products business, formerly part of the Company’s Industrial business, which resulted in a gain on sale of less than $15 million. Refer to Note 3 for additional detail on these divestitures.

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Operating Income:

3M uses operating income as one of its primary business segment performance measurement tools. Refer to the table below for a reconciliation of operating income margins for the three and six months ended June 30, 2018 versus 2017.

	Three months ended		Six months ended
(Percent of net sales)	June 30, 2018		June 30, 2018
Same period last year	27.6	%	25.1	%
Increase/(decrease) in operating income margin, due to:
2017 divestiture of identity management business	(5.9)		(3.0)
Organic volume/productivity and other	2.9		1.5
Selling price and raw material impact	0.3		0.3
Foreign exchange impacts	(0.2)		(0.3)
Legal-related charges	(0.7)		(0.3)
2018 divestiture of Communication Markets Division, net of related restructuring actions	4.6		2.5
Current period, excluding MN Natural Resource Damages (NRD) resolution	28.6	%	25.8	%
MN NRD resolution	—		(5.4)
Current period	28.6	%	20.4	%

Operating income margins increased 1.0 percentage point in the second quarter of 2018 when compared to the second quarter of 2017, and declined 4.7 percentage points in the first six months of 2018 when compared to the first six months of 2017.

Additional discussion related to the components of the year-on-year change in operating income margins follows:

2017 divestiture of identity management business:

· Operating income margins decreased year-on-year due to the gain on the May 2017 divestiture of the Company’s former identity management business.

Organic volume/productivity and other:

· Operating income margins increased year-on-year due to benefits from organic local-currency growth and productivity, in addition to lower year-on-year portfolio and supply chain footprint optimization charges.

· Operating income margins decreased year-on-year due to higher defined benefit pension and postretirement service cost expense and defined contribution expense.

· Acquisition impacts (primarily related to Scott Safety) were offset by other divestiture impacts (which is comprised of lower year-on-year divestiture gains other than the identity management business and Communication Markets Division and lost operating income from divested businesses).

Selling price and raw material impact:

· Higher selling prices, partially offset by raw material cost increases, benefited operating income margins year-on-year.

Foreign exchange impacts:

· Foreign currency effects (net of hedge gains) decreased operating income margins year-on-year.

Legal-related charges:

· In the second quarter of 2018, 3M reached agreements in principle on a number of respiratory mask/asbestos claims and an oral care product liability matter, the implications of which resulted in an increase in certain legal accruals. Refer to Note 14 for further details.

2018 divestiture of Communication Markets Division, net of related restructuring actions:

· In June 2018, 3M completed the sale of substantially all of its Communication Markets Division and reflected a pre-tax gain of $494 million as a result of this divestiture, which was reported within the Company’s Electronics and Energy business.  During the second quarter of 2018, management approved and committed to undertake certain restructuring actions related to  

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addressing corporate functional costs following the Communication Markets Division divestiture. These actions resulted in a second quarter 2018 pre-tax charge of $105 million.

MN NRD Resolution:

· Operating income margins for the six months of 2018 decreased 4.7 percentage points year-on-year. Excluding the first quarter 2018 impact of the Minnesota NRD resolution (as discussed earlier in the “Operating income, operating income margin, income before taxes, net income, earnings per share, and effective tax rate adjusted for impacts of the Minnesota NRD resolution and the measurement period adjustment to the impact of the enactment of the Tax Cuts and Jobs Act (TCJA) - (non-GAAP measures)” section and further in Note 14), operating margins increased 0.7 percentage points for the first six months of 2018.

Other Expense (Income), Net:

See Note 6 for a detailed breakout of this line item.

Interest expense increased in the second quarter and first six months of 2018 compared to the same periods in 2017 due to higher U.S. average debt balances and higher borrowing costs. Interest income increased year-on-year for the second quarter and first six months of 2018 due to higher average interest rates and investment balances.

Effective January 1, 2018, in conjunction with 3M’s adoption of ASU No. 2017-07, all pension and postretirement net periodic benefit cost components (except the service cost component) are reported within other expense (income), net. For additional details, refer to Note 1 (Significant Accounting Policies). Year-on-year pension and postretirement net periodic benefit non-service costs increased $10 million and $23 million for the second quarter and first six months of 2018, respectively. The year-on-year increase in the second quarter and first six months of 2018 was primarily due to an increase in the net actuarial amortization expense.

Provision for Income Taxes:

	Three months ended				Six months ended
	June 30,				June 30,
(Percent of pre-tax income)	2018		2017		2018		2017
Effective tax rate	20.8	%	26.0	%	25.6	%	25.0	%

The effective tax rate for the second quarter of 2018 was 20.8 percent, compared to 26.0 percent in 2017, a decrease of 5.2 percentage points. The effective tax rate for the first six months of 2018 was 25.6 percent, compared to 25.0 percent in 2017, an increase of 0.6 percentage points. The changes in the tax rates between years were impacted by many factors, including the enactment of the Tax Cuts and Jobs Act (TCJA) in December 2017 and measurement period adjustments to the Company’s provisional accounting thereof as further described in the Overview, “Operating income, operating income margin, income before taxes, net income, earnings per share, and effective tax rate adjusted for impacts of the Minnesota NRD resolution and the measurement period adjustment to the impact of the enactment of the Tax Cuts and Jobs Act (TCJA) - (non-GAAP measures)”  section and in Note 8. 3M’s provisional accounting is subject to adjustment during the measurement period of up to one year following the December 2017 enactment of the TCJA, as provided by recent SEC guidance.

Considering the impacts of the TCJA (including the Company’s measurement period adjustments through the second quarter of 2018 to the Company’s provisional accounting for the TCJA’s enactment) and other factors, 3M currently estimates its effective tax rate for 2018 will be approximately 23 to 25 percent. The tax rate can vary from quarter to quarter due to discrete items, such as the settlement of income tax audits, changes in tax laws, measurement period adjustment effects on the provisional items such as the remaining analyses regarding the impact of the TCJA and employee share-based payment accounting; as well as recurring factors, such as the geographic mix of income before taxes.

Refer to Note 8 for further discussion of income taxes.

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Net Income Attributable to Noncontrolling Interest:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Net income attributable to noncontrolling interest	$	5	$	2	$	9	$	5

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 primary noncontrolling interest relates to 3M India Limited, of which 3M’s effective ownership is 75 percent.

Currency Effects:

3M estimates that year-on-year currency effects, including hedging impacts, increased pre-tax income by approximately $5 million for the three months ended June 30, 2018, and increased pre-tax income by approximately $50 million for the six months ended June 30, 2018. 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. 3M estimates that year-on-year foreign currency transaction effects, including hedging impacts, decreased pre-tax income by approximately $27 million and $91 million for the three and six months ended June 30, 2018. These estimates include transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks.

Significant Accounting Policies:

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

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PERFORMANCE BY BUSINESS SEGMENT

Disclosures relating to 3M’s business segments are provided in Note 16. As part of 3M’s continuing effort to improve the alignment of its businesses around markets and customers, the Company made the following changes, effective in the first quarter of 2018, and other revisions impacting business segment reporting:

Consolidation of customer account activity within international countries – expanding dual credit reporting

· The Company consolidated its customer account activity in each country into centralized sales districts for certain countries that make up approximately 70 percent of 3M’s 2017 international net sales. Expansion of these initiatives, which previously had been deployed only in the U.S., reduces the complexity for customers when interacting with multiple 3M businesses. 3M business segment reporting measures include dual credit to business segments for certain sales and related operating income. This dual credit is based on which business segment provides customer account activity with respect to a particular product sold in a specific country. The expansion of alignment of customer accounts within additional countries increased the attribution of dual credit across 3M’s business segments. Additionally, certain sales and operating income results for electronic bonding product lines that were previously equally divided between the Electronics and Energy business segment and the Industrial business segment are now reported similarly to dual credit. As a result, previously reported aggregate business segment net sales and operating income for total year 2017 increased $1.568 billion and $402 million, respectively, offset by similar increases in the elimination of dual credit net sales and operating income amounts.

Centralization of manufacturing and supply technology platforms

· Certain shared film manufacturing and supply technology platform resources formerly reflected within the Electronics and Energy business segment were combined with other shared and centrally managed material resource centers of expertise within Corporate and Unallocated. This change resulted in a decrease in previously reported net sales and an increase in operating income for total year 2017 of $1 million and $42 million, respectively, in the Electronics and Energy segment, offset by a corresponding increase in net sales and decrease in operating income within Corporate and Unallocated.

In addition, as discussed in Note 1, 3M adopted ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. As a result, operating income for 3M’s business segments has been revised to reflect non-service components of pension and postretirement net periodic benefit costs within other expense (income), net.

Business segment information presented herein reflects the impact of these changes for all periods presented. 3M manages its operations in five business segments. The reportable segments are Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer.

Corporate and Unallocated:

In addition to these five business segments, 3M assigns certain costs to “Corporate and Unallocated,” which is presented separately in the preceding business segments table and in Note 16. 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 determines not to allocate directly to its business segments. Corporate and Unallocated also includes sales, costs, and income from contract manufacturing, transition services and other arrangements with the acquirer of substantially all of the Communication Markets Division following its divestiture in June 2018. Because this category includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis.

Corporate and Unallocated operating expenses increased by $155 million and $1.1 billion in the second quarter and first six months of 2018, respectively, when compared to the same period last year. In the second quarter, operating expenses included the restructuring charge of $105 million discussed in Note 5 related to addressing corporate functional costs following the Communication Markets Division divestiture, net of operating income from contractual manufacturing and other arrangements described in the paragraph above. In the first quarter of 2018, the Minnesota NRD resolution ($897 million), inclusive of legal fees and other related obligations, was reflected in Corporate and Unallocated. In addition, 3M’s defined benefit pension and postretirement service-cost expense allocation to Corporate and Unallocated increased year-on-year.

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Operating Business Segments:

Information related to 3M’s business segments for the second quarter and first six months of both 2018 and 2017 are presented in the tables that follow. Organic local-currency sales include both organic volume impacts plus selling price impacts. Acquisition impacts, if any, are measured separately for the first twelve months post-transaction. The divestiture impacts, if any, foreign currency translation impacts 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.

Refer to the preceding “Sales and operating income by geographic area” section for organic local-currency sales growth by business segment within major geographic areas.

Refer to 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K), Item 1, Business, for discussion of 3M products that are included in each business segment.

Industrial Business:

	Three months ended						Six months ended
	June 30,						June 30,
	2018			2017			2018			2017
Sales (millions)	$	3,148		$	2,946		$	6,292		$	5,882
Sales change analysis:
Organic local-currency		5.7	%		4.5	%		4.0	%		5.4	%
Divestitures		(0.1)			(0.6)			(0.1)			(0.6)
Translation		1.2			(0.6)			3.1			(0.7)
Total sales change		6.8	%		3.3	%		7.0	%		4.1	%
Operating income (millions)	$	724		$	568		$	1,443		$	1,238
Percent change		27.4	%		(12.8)	%		16.5	%		(5.2)	%
Percent of sales		23.0	%		19.3	%		22.9	%		21.1	%

Second Quarter 2018 results:

Sales in Industrial totaled $3.1 billion, up 6.8 percent in U.S. dollars. Organic local-currency sales increased 5.7 percent, divestitures decreased sales by 0.1 percent, and foreign currency translation increased sales by 1.2 percent.

On an organic local-currency sales basis:

· Sales growth increased in all businesses, led by separation and purification, advanced materials, and abrasives.

· Industrial adhesives and tapes, automotive and aerospace, and automotive aftermarket all delivered positive growth.

Acquisitions and divestitures:

· In January 2016, 3M completed its sale of its pressurized polyurethane foam adhesives business (formerly known as Polyfoam).

· In October 2016, 3M sold the assets of its temporary protective films business.

· In the first quarter of 2018, 3M completed the sale of its polymer additives compounding business.

· In May 2018, 3M divested an abrasives glass products business.

Operating income:

· Operating income margins increased 3.7 percentage points, helped by organic sales growth across all geographic areas and businesses. Second quarter 2017 included a 1.8 percentage point impact from charges related to portfolio and footprint actions.

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First Six Months 2018 results:

Sales in Industrial totaled $6.3 billion, up 7.0 percent in U.S. dollars. Organic local-currency sales increased 4.0 percent, divestitures decreased sales by 0.1 percent, and foreign currency translation increased sales by 3.1 percent.

On an organic local-currency sales basis:

· Sales growth increased in abrasives, separation and purification, automotive and aerospace, advanced materials, and industrial adhesives and tapes.

· Automotive aftermarket sales were flat, as products and solutions for retail car care was offset by softer demand with auto body shops.

Acquisitions and divestitures:

· In January 2016, 3M completed its sale of its pressurized polyurethane foam adhesives business (formerly known as Polyfoam).

· In October 2016, 3M sold the assets of its temporary protective films business.

· In the first quarter of 2018, 3M completed the sale of its polymer additives compounding business.

· In May 2018, 3M divested an abrasives glass products business.

Operating income:

Operating income margins increased 1.8 percentage points, helped by organic sales growth across most of the portfolio.

Safety and Graphics Business:

	Three months ended						Six months ended
	June 30,						June 30,
	2018			2017			2018			2017
Sales (millions)	$	1,815		$	1,569		$	3,598		$	3,119
Sales change analysis:
Organic local-currency		8.5	%		3.3	%		7.7	%		4.1	%
Acquisitions		10.5			—			10.2			—
Divestitures		(4.2)			(3.3)			(5.4)			(2.1)
Translation		1.0			(0.7)			2.9			(0.6)
Total sales change		15.8	%		(0.7)	%		15.4	%		1.4	%
Operating income (millions)	$	480		$	851		$	963		$	1,250
Percent change		(43.6)	%		103.9	%		(23.0)	%		62.0	%
Percent of sales		26.4	%		54.3	%		26.8	%		40.1	%

Second Quarter 2018 results:

Sales in Safety and Graphics totaled $1.8 billion, up 15.8 percent in U.S. dollars. Organic local-currency sales increased 8.5 percent, acquisitions increased sales by 10.5 percent, divestitures reduced sales by 4.2 percent, and foreign currency translation increased sales by 1.0 percent.

On an organic local-currency sales basis:

· Sales increased in all businesses, led by personal safety, and commercial solutions.

· Sales also increased in transportation safety, and roofing granules.

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Acquisitions and divestitures:

· Acquisition sales growth in 2018 reflects the acquisition of Scott Safety in October 2017. Scott Safety is a premier manufacturer of innovative products, including self-contained breathing apparatus systems, gas and flame detection instruments and other safety devices.

· 2017 divestitures include the sale of its safety prescription eyewear business (first quarter 2017), the sale of 3M’s identity management business and tolling and automated license/number plate business (both in second quarter 2017) and electronic monitoring business (fourth quarter 2017).

· In February 2018, 3M closed on the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring.

Operating income:

· Operating income margins decreased 27.9 percentage points, primarily related to the year-on-year impact of 2017 divestiture gains.

First Six Months 2018 results:

Sales in Safety and Graphics totaled $3.6 billion, up 15.4 percent in U.S. dollars. Organic local-currency sales increased 7.7 percent, acquisitions increased sales by 10.2 percent, divestitures reduced sales by 5.4 percent, and foreign currency translation increased sales by 2.9 percent.

On an organic local-currency sales basis:

· Sales increased in all businesses, led by personal safety, and commercial solutions.

· Sales also increased in transportation safety, and roofing granules.

Acquisitions and divestitures:

· Acquisition sales growth in 2018 reflects the acquisition of Scott Safety in October 2017. Scott Safety is a premier manufacturer of innovative products, including self-contained breathing apparatus systems, gas and flame detection instruments and other safety devices.

· 2017 divestitures include the sale of its safety prescription eyewear business (first quarter 2017), the sale of 3M’s identity management business and tolling and automated license/number plate business (both in second quarter 2017) and electronic monitoring business (fourth quarter 2017).

· In February 2018, 3M closed on the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring.

Operating income:

· Operating income margins decreased 13.3 percentage points, primarily related to the year-on-year impact of 2017 divestiture gains.

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Health Care Business:

	Three months ended						Six months ended
	June 30,						June 30,
	2018			2017			2018			2017
Sales (millions)	$	1,520		$	1,449		$	3,056		$	2,884
Sales change analysis:
Organic local-currency		3.8	%		2.5	%		3.3	%		2.8	%
Acquisitions		0.1			—			0.1			—
Translation		1.0			(0.7)			2.6			(0.7)
Total sales change		4.9	%		1.8	%		6.0	%		2.1	%
Operating income (millions)	$	435		$	408		$	895		$	837
Percent change		6.7	%		(10.0)	%		6.8	%		(7.2)	%
Percent of sales		28.6	%		28.1	%		29.3	%		29.0	%

Second Quarter 2018 results:

Sales in Health Care totaled $1.5 billion, up 4.9 percent in U.S. dollars. Organic local-currency sales increased 3.8 percent, acquisitions increased sales by 0.1 percent, and foreign currency translation increased sales by 1.0 percent.

On an organic local-currency sales basis:

· Sales growth was led by food safety, medical solutions, and health information systems.

· Oral care sales also increased, with continued positive growth internationally, particularly in developing economies.

· Sales declined in drug delivery systems.

· In developing markets, Health Care organic local-currency sales growth was led by China/Hong Kong and Brazil.

Acquisitions:

· In September 2017, 3M acquired Elution Technologies, LLC, a manufacturer of food safety test kits.

Operating income:

· Operating income margins increased slightly year-on-year. Second quarter 2018 results included the impacts of a legal settlement (refer to Note 14) and the commercial investments for the Company’s new 3MTMClarityTM aligners.

First Six Months 2018 results:

Sales in Health Care totaled $3.1 billion, up 6.0 percent in U.S. dollars. Organic local-currency sales increased 3.3 percent, acquisitions increased sales by 0.1 percent, and foreign currency translation increased sales by 2.6 percent.

On an organic local-currency sales basis:

· Sales growth was led by food safety, health information systems, and medical solutions.

· Oral care sales also increased, with continued positive growth internationally, particularly in developing economies.

· Sales declined in drug delivery systems.

Acquisitions:

· In September 2017, 3M acquired Elution Technologies, LLC, a manufacturer of food safety test kits.

Operating income:

· Operating income margins increased slightly year-on-year.

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Electronics and Energy Business:

	Three months ended						Six months ended
	June 30,						June 30,
	2018			2017			2018			2017
Sales (millions)	$	1,337		$	1,290		$	2,687		$	2,581
Sales change analysis:
Organic local-currency		5.2	%		9.7	%		3.4	%		10.7	%
Divestitures		(2.7)			(0.4)			(1.4)			(0.3)
Translation		1.1			(0.5)			2.1			(0.4)
Total sales change		3.6	%		8.8	%		4.1	%		10.0	%
Operating income (millions)	$	865		$	325		$	1,202		$	581
Percent change		166.8	%		36.8	%		107.0	%		26.5	%
Percent of sales		64.7	%		25.1	%		44.7	%		22.5	%

Second Quarter 2018 results:

Sales in Electronics and Energy totaled $1.3 billion, up 3.6 percent in U.S. dollars. Organic local-currency sales increased 5.2 percent, divestitures reduced sales by 2.7, and foreign currency translation increased sales by 1.1 percent.

Total sales within the electronics-related and energy-related businesses were up 5 percent and 1 percent, respectively. Total sales increased 5 percent in Asia Pacific.

On an organic local-currency sales basis:

· Sales increased 4 percent in 3M’s electronics-related businesses, driven by increases in electronics materials solutions. Sales in display materials and systems also increased.

· Sales increased 9 percent in 3M’s energy-related businesses, driven by increases in electrical markets.

· Sales increased 4 percent in Asia Pacific, where 3M’s electronics business is concentrated.

Divestitures:

· In December 2016, 3M sold the assets of its cathode battery technology out-licensing business.

· In the fourth quarter of 2017, 3M sold the assets of its electrical marking/labeling business.

· In June 2018, 3M completed the sale of substantially all of its Communication Markets Division and recorded a pre-tax gain of approximately $494 million. Refer to Note 3 for additional details.

Operating income:

· Operating income margins increased 39.6 percentage points, driven by the Communication Markets Division divestiture gain.

First Six Months 2018 results:

Sales in Electronics and Energy totaled $2.7 billion, up 4.1 percent in U.S. dollars. Organic local-currency sales increased 3.4 percent, divestitures reduced sales by 1.4, and foreign currency translation increased sales by 2.1 percent.

Total sales within the electronics-related and energy-related businesses were up 5 percent and 2 percent, respectively. Total sales increased 6 percent in Asia Pacific.

On an organic local-currency sales basis:

· Sales increased 3 percent in 3M’s electronics-related businesses, driven by increases in electronics materials solutions. This growth was partially offset by a decline in display materials and systems due to softness in consumer electronics.

· Sales increased 4 percent in 3M’s energy-related businesses, driven by electrical markets.

· Sales increased 4 percent in Asia Pacific, where 3M’s electronics business is concentrated.

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Divestitures:

· In December 2016, 3M sold the assets of its cathode battery technology out-licensing business.

· In the fourth quarter of 2017, 3M sold the assets of its electrical marking/labeling business.

· In June 2018, 3M completed the sale of substantially all of its Communication Markets Division and recorded a pre-tax gain of approximately $494 million. Refer to Note 3 for additional details.

Operating income:

· Operating income margins increased 22.2 percentage points, driven by the Communication Markets Division divestiture gain.

Consumer Business:

	Three months ended						Six months ended
	June 30,						June 30,
	2018			2017			2018			2017
Sales (millions)	$	1,223		$	1,169		$	2,350		$	2,242
Sales change analysis:
Organic local-currency		4.3	%		1.4	%		3.3	%		0.6	%
Translation		0.3			(0.2)			1.5			0.1
Total sales change		4.6	%		1.2	%		4.8	%		0.7	%
Operating income (millions)	$	261		$	198		$	479		$	421
Percent change		32.3	%		(29.1)	%		13.8	%		(18.0)	%
Percent of sales		21.4	%		16.9	%		20.4	%		18.8	%

Second Quarter 2018 results:

Sales in Consumer totaled $1.2 billion, an increase of 4.6 percent in U.S. dollars. Organic local-currency sales increased 4.3 percent and foreign currency translation increased sales by 0.3 percent.

On an organic local-currency sales basis:

· Sales grew in home improvement, stationery and office, and home care.

· Sales in consumer health care declined.

Operating income:

· Operating income margins increased 4.5 percentage points year-on-year, benefiting from expenses related to portfolio and footprint actions taken in the second quarter of 2017 that were not repeated in the second quarter of 2018.

First Six Months 2018 results:

Sales in Consumer totaled $2.4 billion, an increase of 4.8 percent in U.S. dollars. Organic local-currency sales increased 3.3 percent and foreign currency translation increased sales by 1.5 percent.

On an organic local-currency sales basis:

· Sales grew in home improvement, building on its track record of strong performance over the past several years.

· Home care and stationery and office supplies delivered positive growth, while consumer health care declined.

Operating income:

· Operating income margins increased 1.6 percentage points year-on-year, benefiting from expenses related to portfolio and footprint actions taken in the first six months of 2017 that were not repeated in the first six months of 2018.

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FINANCIAL CONDITION AND LIQUIDITY

The strength and stability of 3M’s business model and strong free cash flow capability, together with proven capital markets access, positions the Company to be able to add further leverage to its capital structure. Investing in 3M’s businesses to drive organic growth remains the first priority for capital deployment, including research and development, capital expenditures, and commercialization capability. Investment in organic growth will be supplemented by complementary acquisitions. 3M will also continue to return cash to shareholders through dividends and share repurchases. Sources for cash availability in the United States, such as ongoing cash flow from operations and access to capital markets, have historically been sufficient to fund dividend payments to shareholders, as well as funding U.S. acquisitions and other items as needed. The TCJA creates additional repatriation opportunities for 3M to access international cash positions on a continual and on-going basis and will help support U.S. capital deployments needs. For those international earnings still considered to be reinvested indefinitely, the Company currently has no plans or intentions to repatriate these funds for U.S. operations. See Note 9 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for further information on earnings considered to be reinvested indefinitely.

3M’s primary short-term liquidity needs are met through cash on hand and U.S. commercial paper issuances. 3M believes it will have continuous access to the commercial paper market. 3M’s commercial paper program permits the Company to have a maximum of $5 billion outstanding with a maximum maturity of 397 days from date of issuance. At June 30, 2018, there was approximately $1.5 billion in commercial paper issued and outstanding.

Total debt:

The strength of 3M’s capital structure and significant ongoing cash flows provide 3M proven access to capital markets. Additionally, the Company’s maturity profile is staggered to help ensure refinancing needs in any given year are reasonable in proportion to the total portfolio. 3M currently has an AA- credit rating with a stable outlook from Standard & Poor’s and has an A1 credit rating with a stable outlook from Moody’s Investors Service.

The Company’s total debt was $570 million higher at June 30, 2018 when compared to December 31, 2017. Increases in debt related to commercial paper of $1.5 billion outstanding at June 30, 2018 as compared to $745 million at December 31, 2017, and the net impact of repayments and borrowings of international subsidiaries along with foreign currency effects. For discussion of repayments of and proceeds from debt refer to the following “Cash Flows from Financing Activities” section.

Effective February 24, 2017, the Company updated its “well-known seasoned issuer” (WKSI) shelf registration statement, which registers an indeterminate amount of debt or equity securities for future issuance and sale. This replaced 3M’s previous shelf registration dated May 16, 2014. In May 2016, in connection with the WKSI shelf, 3M entered into an amended and restated distribution agreement relating to the future issuance and sale (from time to time) of the Company’s medium-term notes program (Series F), up to the aggregate principal amount of $18 billion, which was an increase from the previous aggregate principal amount up to $9 billion of the same Series.

As of June 30, 2018, the total amount of debt issued as part of the medium-term notes program (Series F), inclusive of debt issued in 2017 and prior years is approximately $13.1 billion (utilizing the foreign exchange rates applicable at the time of issuance for the Euro denominated debt). Information with respect to long-term debt issuances and maturities for the periods presented is included in Note 11 of 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

In March 2016, 3M amended and restated its existing $2.25 billion five-year revolving credit facility expiring in August 2019 to a $3.75 billion five-year revolving credit facility expiring in March 2021. This credit agreement includes a provision under which 3M may request an increase of up to $1.25 billion (at lenders’ discretion), bringing the total facility up to $5.0 billion. This revolving credit facility is undrawn at June 30, 2018. Under the $3.75 billion credit agreement, 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 June 30, 2018, this ratio was approximately 23 to 1. Debt covenants do not restrict the payment of dividends. Apart from the committed facilities, an additional $281 million in stand-alone letters of credit and bank guarantees were also issued and outstanding at June 30, 2018. These instruments are utilized in connection with normal business activities.

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Cash, cash equivalents and marketable securities:

At June 30, 2018, 3M had $3.2 billion of cash, cash equivalents and marketable securities, of which approximately $3.046 billion was held by the Company’s foreign subsidiaries and approximately $166 million was held by the United States. These balances are invested in bank instruments and other high-quality fixed income securities. At December 31, 2017, cash, cash equivalents and marketable securities held by the Company’s foreign subsidiaries and by the United States totaled approximately $3.975 billion and $180 million, respectively.

Net Debt (non-GAAP measure):

Net debt is not defined under U.S. GAAP and may not be computed the same as similarly titled measures used by other companies. The Company defines net debt as total debt less the total of cash, cash equivalents and current and long-term marketable securities. 3M believes net debt is meaningful to investors as 3M considers net debt and its components to be important indicators of liquidity and financial position. The following table provides net debt as of June 30, 2018, and December 31, 2017.

(Millions)	June 30, 2018		December 31, 2017		Change
Total debt	$	14,519	$	13,949	$	570
Less: Cash, cash equivalents and marketable securities		3,212		4,156		(944)
Net debt (non-GAAP measure)	$	11,307	$	9,793	$	1,514

Refer to the preceding “Total Debt” and “Cash, Cash Equivalents and Marketable Securities” sections for additional details.

Balance Sheet:

3M’s strong balance sheet and liquidity provide the Company with significant flexibility to fund its numerous opportunities going forward. The Company will continue to invest in its operations to drive growth, including continual review of acquisition opportunities.

The Company uses working capital measures that place emphasis and focus on certain working capital assets. These measures include working capital, accounts receivable turns, and inventory turns.

Working capital (non-GAAP measure):

(Millions)	June 30, 2018		December 31, 2017		Change
Current assets	$	13,890	$	14,277	$	(387)
Less: Current liabilities		8,902		7,687		1,215
Working capital (non-GAAP measure)	$	4,988	$	6,590	$	(1,602)

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 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. The Company defines working capital as current assets minus current liabilities. 3M believes working capital is meaningful to investors as a measure of operational efficiency and short-term financial health.

Working capital decreased $1.602 billion compared with December 31, 2017. Current asset balance changes decreased working capital by $387 million, driven by decreases in cash and cash equivalents and marketable securities that were partially offset by increases in accounts receivable and inventories (discussed further below). Current liability balance changes decreased working capital by $1.2 billion, primarily due to increases in short-term debt.

Accounts receivable and inventory turns (non-GAAP measures):

Accounts receivable and inventory turns 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. 3M defines accounts receivable turns as quarterly net sales multiplied by 4 divided by ending accounts receivable – net, and defines inventory turns as quarterly manufacturing cost multiplied by 4 divided by ending inventory. 3M believes accounts receivable turns is meaningful to investors as a measure of how efficiently the

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Company manages credit and collects from its customers. For inventory turns calculation purposes, manufacturing cost is defined as cost of sales less freight and engineering costs. 3M believes inventory turns is meaningful to investors as a measure of how quickly inventory is sold. Details of these calculations follow.

Accounts receivable turns (non-GAAP measure)
(Millions, except turns)	June 30, 2018		December 31, 2017		Change
Quarterly net sales	$	8,390	$	7,990	$	400
Ending accounts receivable - net	$	5,383	$	4,911	$	472
Accounts receivable turns		6.23		6.51		(0.28)

Inventory turns (non-GAAP measure)
(Millions, except turns)	June 30, 2018		December 31, 2017		Change
Quarterly cost of sales	$	4,227	$	4,094	$	133
Less: Freight and engineering	$	185	$	174	$	11
Manufacturing cost	$	4,042	$	3,920	$	122
Ending inventory	$	4,238	$	4,034	$	204
Inventory turns		3.82		3.89		(0.07)

Accounts receivable increased $472 million from December 31, 2017, primarily due to increased sales. Foreign currency impacts decreased June 30, 2018 accounts receivable by $112 million and acquisitions, net of divestitures, decreased accounts receivable by $22 million. Accounts receivable turns decreased 4 percent versus December 31, 2017.

Inventory increased $204 million from December 31, 2017. Foreign currency impacts decreased June 30, 2018 inventory by $113 million and acquisitions, net of divestitures, decreased inventory by $20 million. Higher second quarter 2018 sales contributed to a 3 percent increase in cost of sales, while inventory increased 5 percent, which combined contributed to a 2 percent decrease in inventory turns.

On a seasonal basis, both accounts receivable and inventory turns are historically higher at year-end, driven by lower year-end accounts receivable and inventory balances.

Cash Flows:

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:

	Six months ended
	June 30,
(Millions)	2018		2017
Net income including noncontrolling interest	$	2,468	$	2,911
Depreciation and amortization		762		818
Company pension and postretirement contributions		(261)		(279)
Company pension and postretirement expense		204		163
Stock-based compensation expense		208		206
Gain on sale of businesses		(530)		(490)
Income taxes (deferred and accrued income taxes)		233		137
Accounts receivable		(606)		(412)
Inventories		(337)		(347)
Accounts payable		(12)		(60)
Other — net		(87)		(17)
Net cash provided by operating activities	$	2,042	$	2,630

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 the first six months of 2018, cash flows provided by operating activities decreased $588 million compared to the same period last year, with this decrease primarily due to the Minnesota NRD resolution. Additional factors that decreased operating cash flows were increases in inventory and accounts receivable. The combination of accounts receivable, inventories and accounts payable increased working capital by $955 million in the first six months of 2018, compared to the working capital increases of $819 million in the first six months of 2017. Additional discussion on working capital changes is provided earlier in the “Financial Condition and Liquidity” section.

Cash Flows from Investing Activities:

	Six months ended
	June 30,
(Millions)	2018		2017
Purchases of property, plant and equipment (PP&E)	$	(669)	$	(589)
Proceeds from sale of PP&E and other assets		96		13
Acquisitions, net of cash acquired		13		—
Purchases and proceeds from maturities and sale of marketable securities and investments, net		672		136
Proceeds from sale of businesses, net of cash sold		806		862
Other — net		(11)		5
Net cash provided by investing activities	$	907	$	427

Investments in property, plant and equipment enable growth across many diverse markets, helping to meet product demand and increasing manufacturing efficiency. The Company expects 2018 capital spending to be approximately $1.5 billion to $1.8 billion as 3M continues to invest in its businesses.

3M invests in renewal and maintenance programs, which pertain to cost reduction, cycle time, maintaining and renewing current capacity, eliminating pollution, and compliance. Costs related to maintenance, ordinary repairs, and certain other items are expensed. 3M also invests in growth, which adds to capacity, driven by new products, both through expansion of current facilities and new facilities. Finally, 3M also invests in other initiatives, such as information technology (IT) and laboratory facilities.

Refer to Note 3 for information on acquisitions and divestitures. The Company is actively considering additional acquisitions, investments and strategic alliances, and from time to time may also divest certain businesses. Proceeds from sale of businesses in the

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first six months of 2018 primarily relate to the sale of substantially all of 3M’s Communication Markets Division and the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring within the Safety and Graphics business segment.

Purchases of marketable securities and investments and proceeds from maturities and sale of marketable securities and investments are primarily attributable to asset-backed securities, certificates of deposit/time deposits, commercial paper, and other securities, which are classified as available-for-sale. Refer to Note 9 for more details about 3M’s diversified marketable securities portfolio. Purchases of investments include additional survivor benefit insurance, plus investments in equity securities.

Cash Flows from Financing Activities:

	Six months ended
	June 30,
(Millions)	2018		2017
Change in short-term debt — net	$	774	$	(113)
Repayment of debt (maturities greater than 90 days)		(6)		(650)
Proceeds from debt (maturities greater than 90 days)		6		—
Total cash change in debt	$	774	$	(763)
Purchases of treasury stock		(2,537)		(1,184)
Proceeds from issuances of treasury stock pursuant to stock option and benefit plans		305		496
Dividends paid to shareholders		(1,612)		(1,403)
Other — net		(26)		(2)
Net cash used in financing activities	$	(3,096)	$	(2,856)

Total debt was approximately $14.5 billion at June 30, 2018 and $13.9 billion at December 31, 2017. Increases in debt largely related to commercial paper of $1.5 billion outstanding at June 30, 2018 compared to $745 million at December 31, 2017, an increase of  $755 million. 3M’s primary short-term liquidity needs are met through cash on hand and U.S. commercial paper issuances.

Repurchases of common stock are made to support the Company’s stock-based employee compensation plans and for other corporate purposes. In February 2016, 3M’s Board of Directors authorized the repurchase of up to $10 billion of 3M’s outstanding common stock, with no pre-established end date. The Company expects full-year 2018 gross share repurchases will be in the range of $4.0 billion to $5.0 billion. For more information, refer to the table titled “Issuer Purchases of Equity Securities” in Part II, Item 2. The Company does not utilize derivative instruments linked to the Company’s stock.

3M has paid dividends each year since 1916. In January 2018, 3M’s Board of Directors declared a first-quarter 2018 dividend of $1.36 per share, an increase of 16 percent. This is equivalent to an annual dividend of $5.44 per share and marked the 60th consecutive year of dividend increases for 3M. In May 2018, 3M’s Board of Directors declared a second quarter 2018 dividend of $1.36 per share.

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.

Free Cash Flow (non-GAAP measure):

Free cash flow and free cash flow conversion are not defined under U.S. generally accepted accounting principles (GAAP). Therefore, they 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. The Company defines free cash flow as net cash provided by operating activities less purchases of property, plant and equipment. It should not be inferred that the entire free cash flow amount is available for discretionary expenditures. The Company defines free cash flow conversion as free cash flow divided by net income attributable to 3M. The Company believes free cash flow and free cash flow conversion are meaningful to investors as they are useful measures of performance and the Company uses these measures as an indication of the strength of the company and its ability to

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generate cash. The first quarter of each year is typically 3M’s seasonal low for free cash flow and free cash flow conversion. In the table below details the components of free cash flow for the six months ended June 30, 2018 and 2017.

In the first six months of 2018, free cash flow conversion was impacted by the Minnesota NRD resolution, the measurement period adjustment relative to the accounting for the 2017 enactment of the TCJA, and the divestiture of the Communication Markets Division, net of related restructuring actions. Refer to the preceding “Cash Flows from Operating Activities” section for discussion of additional items that impacted operating cash flow. Refer to the proceeding “Cash Flows from Investing Activities” section for discussion on capital spending for property, plant and equipment.

	Six months ended
	June 30,
(Millions)	2018			2017
Major GAAP Cash Flow Categories
Net cash provided by operating activities	$	2,042		$	2,630
Net cash provided by investing activities		907			427
Net cash used in financing activities		(3,096)			(2,856)
Free Cash Flow (non-GAAP measure)
Net cash provided by operating activities	$	2,042		$	2,630
Purchases of property, plant and equipment (PP&E)		(669)			(589)
Free cash flow	$	1,373		$	2,041
Net income attributable to 3M	$	2,459		$	2,906
Free cash flow conversion		56	%		70	%

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CAUTIONARY NOTE CONCERNING FACTORS THAT MAY AFFECT FUTURE RESULTS

This Quarterly Report on Form 10-Q, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part I, Item 2, 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,” “forecast” 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, political, and capital markets conditions, such as interest rates, foreign currency exchange rates, financial conditions of our suppliers and customers, and natural and other disasters or climate change 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 (including the Tax Cuts and Jobs Act), 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,” “Financial Condition and Liquidity” and annually in “Critical Accounting Estimates.” 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 3.  Quantitative and Qualitative Disclosures About Market Risk.

In the context of Item 3, 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 impact the Company’s results of operations and financial condition. For a discussion of sensitivity analysis related to these types of market risks, refer to Part II, Item 7A, Quantitative and Qualitative Disclosures About Market Risk, in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K). There have been no material changes in information that would have been provided in the context of Item 3 from the end of the preceding year until June 30, 2018. However, the Company does provide risk management discussion in various places in this Quarterly Report on Form 10-Q, primarily in the Derivatives note.

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Item 4.  Controls and Procedures.

a. The Company carried out an evaluation, under the supervision and with the participation of its management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s “disclosure controls and procedures” (as defined in the Exchange Act Rule 13a-15(e)) as of the end of the period covered by this report. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures are effective.

b. There was no change in the Company’s internal control over financial reporting that occurred during the Company’s most recently completed fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

The Company is implementing an enterprise resource planning (“ERP”) system on a worldwide basis, which is expected to improve the efficiency of certain financial and related transaction processes. The gradual implementation is expected to occur in phases over the next several years. The implementation of a worldwide ERP system will likely affect the processes that constitute our internal control over financial reporting and will require testing for effectiveness.

The Company completed implementation with respect to elements of certain processes/sub-processes in limited subsidiaries/locations and will continue to roll out the ERP system over the next several years. As with any new information technology application we implement, this application, along with the internal controls over financial reporting included in this process, was appropriately considered within the testing for effectiveness with respect to the implementation in these instances. We concluded, as part of its evaluation described in the above paragraphs, that the implementation of the ERP system in these circumstances has not materially affected our internal control over financial reporting.

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3M COMPANY

FORM 10-Q

For the Quarterly Period Ended June 30, 2018

PART II.  Other Information

Item 1.  Legal Proceedings.

Discussion of legal matters is incorporated by reference from Part I, Item 1, Note 14, “Commitments and Contingencies” of this document, and should be considered an integral part of Part II, Item 1, “Legal Proceedings.”

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 I, Item 2, “Management’s Discussion and Analysis of Financial Conditions and Results of Operations.”

* Results are impacted by the effects of, and changes in, worldwide economic, political, and capital markets conditions. The Company operates in more than 70 countries and derives approximately 60 percent of its revenues from outside the United States. The Company’s business is subject to global competition and geopolitical risks and may be adversely affected by factors in the United States and other countries that are beyond its control, such as slower economic growth, disruptions in financial markets, economic downturns in the form of either contained or widespread recessionary conditions, inflation, elevated unemployment levels, sluggish or uneven recovery, government actions impacting international trade agreements, imposing trade restrictions such as tariffs, and retaliatory counter measures, government deficit reduction and other austerity measures 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 or climate change 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, tax laws, or exchange control, ability to expatriate earnings and other regulations in the jurisdictions in which the Company operates.

* Change in the Company’s credit ratings could increase cost of funding. 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. 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. 3M currently has an AA- credit rating with a stable outlook from Standard & Poor’s and has an A1 credit rating with a stable outlook from Moody’s Investors Service. The Company’s credit ratings have served to lower 3M’s borrowing costs and facilitate access to a variety of lenders. The addition of further leverage to the Company’s capital structure could impact 3M’s credit ratings in the future. Failure to maintain strong investment grade ratings would adversely affect the Company’s cost of funding 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 60 percent 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

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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, and engages in ongoing global business transformation. Business transformation is defined as changes in processes and internal/external service delivery across 3M to move to more efficient business models to improve operational efficiency and productivity, while allowing 3M to serve customers with greater speed and efficiency. This is enabled by the ongoing multi-year phased implementation of an enterprise resource planning (ERP) system on a worldwide basis. 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 ERP system as part of business transformation 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 or its customers, suppliers, and employees, exposing the Company to liability which could adversely impact the Company’s business and reputation. In the ordinary course of business, the Company relies on centralized and local 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 businesses. Additionally, the Company collects and stores certain data, including proprietary business information, and may have access to confidential or personal information in certain of our businesses that is subject to privacy and security laws, regulations and customer-imposed controls. Despite our cybersecurity measures (including employee and third-party training, monitoring of networks and systems, patching, maintenance, and backup of systems and data), the Company’s information technology networks and infrastructure may still be vulnerable to damage, disruptions or shutdowns due to attacks by hackers, breaches, employee error or malfeasance, power outages, computer viruses, ransomware, telecommunication or utility failures, systems failures, service or cloud provider breaches, natural disasters or other catastrophic events. It is possible for such vulnerabilities to remain undetected for an extended period, up to and including several years. While we have experienced, and expect to continue to experience, these types of vulnerabilities to the Company’s information technology networks and infrastructure, none of them to date has had a material impact to the Company. There may be other challenges and risks as the Company upgrades and standardizes its ERP system on a worldwide basis. Any such events could result in legal claims or proceedings, liability or penalties under privacy laws, disruptions or shutdowns, and damage to the Company’s reputation, which could adversely affect the Company’s business. Although the Company maintains insurance coverage for various cybersecurity and business continuity risks, there can be no guarantee that all costs or losses incurred will be fully insured.

* The Company's defined benefit pension and postretirement plans are subject to financial market risks that could adversely impact our results. The performance of financial markets and discount rates impact the Company's funding obligations under its defined benefit plans. Significant changes in market interest rates, decreases in the fair value of plan assets and investment losses on plan assets, and relevant legislative or regulatory changes relating to defined benefit plan funding may increase the Company's funding obligations and adversely impact its results of operations and cash flows.

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* The Company’s future results may be affected by various legal and regulatory proceedings and legal compliance risks, including those involving product liability, antitrust, intellectual property, 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 14 “Commitments and Contingencies” within the Notes to Consolidated Financial Statements.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds.

Issuer Purchases of Equity Securities

Repurchases of 3M common stock are made to support the Company’s stock-based employee compensation plans and for other corporate purposes. In February 2016, 3M’s Board of Directors authorized the repurchase of up to $10 billion of 3M’s outstanding common stock, with no pre-established end date.

Issuer Purchases of Equity

Securities (registered pursuant to

Section 12 of the Exchange Act)

					Maximum
					Approximate
					Dollar Value of
				Total Number of	Shares that May
				Shares Purchased	Yet Be Purchased
	Total Number of	Average Price		as Part of Publicly	under the Plans
	Shares Purchased	Paid per		Announced Plans	or Programs
Period	(1)	Share		or Programs (2)	(Millions)
January 1-31, 2018	714,575	$	245.98	714,138	$	4,894
February 1-28, 2018	1,420,634	$	233.78	1,420,599	$	4,562
March 1-31, 2018	1,791,496	$	228.82	1,791,496	$	4,152
Total January 1-March 31, 2018	3,926,705	$	233.74	3,926,233	$	4,152
April 1-30, 2018	2,135,968	$	213.63	2,135,968	$	3,696
May 1-31, 2018	3,283,170	$	201.64	3,282,339	$	3,034
June 1-30, 2018	2,358,619	$	200.31	2,358,619	$	2,562
Total April 1-June 30, 2018	7,777,757	$	204.53	7,776,926	$	2,562
Total January 1-June 30, 2018	11,704,462	$	214.33	11,703,159	$	2,562

(1) The total number of shares purchased includes: (i) shares purchased under the Board’s authorizations described above, and (ii) shares purchased in connection with the exercise of stock options.

(2) The total number of shares purchased as part of publicly announced plans or programs includes shares purchased under the Board’s authorizations described above.

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Item 3.  Defaults Upon Senior Securities. — No matters require disclosure.

Item 4.  Mine Safety Disclosures. Pursuant to Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”), the Company is required to disclose, in connection with the mines it operates, information concerning mine safety violations or other regulatory matters in its periodic reports filed with the SEC. The information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Act is included in Exhibit 95 to this quarterly report.

Item 5.  Other Information. — No matters require disclosure.

Item 6.  Exhibits.

(10.23)	Policy on Reimbursement of Incentive Compensation (effective May 7, 2018) is filed herewith.
(12)	Calculation of ratio of earnings to fixed charges.
(15)	A letter from the Company’s independent registered public accounting firm regarding unaudited interim consolidated financial statements.
(31.1)	Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.
(31.2)	Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.
(32.1)	Certification of the Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.
(32.2)	Certification of the Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350.
(95)	Mine Safety Disclosures.
(101.INS)	XBRL Instance Document.
(101.SCH)	XBRL Taxonomy Extension Schema Document.
(101.CAL)	XBRL Taxonomy Extension Calculation Linkbase Document.
(101.DEF)	XBRL Taxonomy Extension Definition Linkbase Document.
(101.LAB)	XBRL Taxonomy Extension Label Linkbase Document.
(101.PRE)	XBRL Taxonomy Extension Presentation Linkbase Document.

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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: July 26, 2018

	By	/s/ Nicholas C. Gangestad
		Nicholas C. Gangestad,
Senior Vice President and Chief Financial Officer
(Mr. Gangestad is the Principal Financial Officer and has
been duly authorized to sign on behalf of the Registrant.)

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EX-10.23

EXHIBIT 10.23

POLICY ON REIMBURSEMENT OF INCENTIVE COMPENSATION

WHEREAS, the Board of Directors of the Company (the “Board”) previously adopted a policy enabling the Company to require reimbursement or forfeiture of incentive compensation paid or provided to the Company’s senior executives in certain circumstances; and

WHEREAS, the Board now believes it is in the best interests of the Company to modify the existing policy to enable the Company to require reimbursement or forfeiture of incentive compensation paid or provided to a senior executive of the Company in circumstances where there has been an act of misconduct or specified failure of risk management by a senior executive that has resulted or may result in financial or reputational harm to the Company.

RESOLVED, that the Board shall, in all appropriate circumstances, as determined in its discretion, and to the extent permitted by governing law, require reimbursement or forfeiture of any annual incentive payment or long-term incentive compensation provided to an Executive (defined as a current or former employee who is or was (1) an executive officer for purposes of Rule 3b-7 under the Securities Exchange Act of 1934, as amended, or (2) a senior executive of the Company at the L1 level) where:

(1) the payment or compensation was predicated upon achieving certain financial results that were subsequently the subject of a material restatement of Company financial statements filed with the SEC, and the amount of such payment or compensation would have been lower based upon the restated financial results;

(2) an act of misconduct by the Executive has caused or might reasonably be expected to cause significant financial or reputational harm to the Company; or

(3) there is an improper or grossly negligent failure of the Executive, including in a supervisory capacity, to identify, escalate, monitor or manage, in a timely manner and as reasonably expected, risks material to the Company, which has caused or might reasonably be expected to cause significant financial or reputational harm to the Company.

In the event of a material restatement of the Company’s financial statements as referred to in (1) above, the Company will, to the extent practicable, seek to recover from the individual Executive the amount(s) by which the individual Executive's incentive payments or compensation for the relevant periods exceeded the amount(s) that would have been made based on the restated financial results.  In the event of misconduct by the Executive as referred to in (2) above or a failure of risk management as referred to in (3) above, the Company will, to the extent practicable, seek to recover from the individual Executive the amount(s) by which the Board, in its discretion, determines would not have been awarded or earned if the circumstances surrounding the Executive’s misconduct or failure of risk management had been known to the Board.

If the Executive does not reimburse the Company for such amounts, the Company, among other remedies, may elect to recover the amount(s) by offsetting other amounts due or which may come due to the Executive under other compensation plans or programs.  

In determining whether, in its discretion there are appropriate circumstances to require such reimbursement or forfeiture, the Board will consider all the facts and circumstances relating to the material restatement or the event that resulted or may result in financial or reputational harm, including the extent to which an Executive acted in the normal course of the Executive’s duties and in good faith based on facts known to the Executive at the time.  Further, in the event of a material restatement, except in cases where the financial results subject to the material restatement were inaccurate as a result of an act of misconduct or failure of risk management by a senior executive, the right to recovery shall be limited to compensation actually paid or provided during the three years prior to the date on which the Company commences steps that ultimately lead to the filing of the material restatement. 

FURTHER RESOLVED, that in addition to any other reimbursement or forfeiture described elsewhere in this Policy, the Company may require an Executive to reimburse the Company for profits the Executive realizes on the sale of Company securities during the 12‑month period following the issuance by the Company of a financial report that, due to the Executive’s misconduct, is materially noncompliant with the federal securities laws.

This revised Policy shall take effect on May 7, 2018 and apply to any annual incentive payment or long-term incentive compensation paid or provided to an Executive on or after the effective date.  Any annual incentive payment or long-term incentive compensation awards paid or provided to an Executive prior to May 7, 2018 shall be subject to the Policy on Reimbursement of Incentive Payments previously in effect.

* * * * *

EX-12

EXHIBIT 12

3M COMPANY AND SUBSIDIARIES

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Millions)

	Six months ended
	June 30,		Year		Year		Year		Year		Year
	2018		2017		2016		2015		2014		2013
EARNINGS
Income before income taxes	$	3,315	$	7,548	$	7,053	$	6,823	$	7,026	$	6,562
Add:
Amortization of capitalized interest		9		19		21		22		22		21
Total fixed charges (excluding capitalized interest)		234		339		298		250		246		248
Less:
Equity in undistributed income of equity method investments		6		11		9		5		(1)		(1)
TOTAL EARNINGS	$	3,552	$	7,895	$	7,363	$	7,090	$	7,295	$	6,832
FIXED CHARGES
Interest expense (including capitalized interest and excluding expense on early extinguishment of debt)		176		238		208		162		159		166
Portion of rent expense under operating leases representative of the interest factor		64		113		100		101		104		103
TOTAL FIXED CHARGES	$	240	$	351	$	308	$	263	$	263	$	269
RATIO OF EARNINGS TO FIXED CHARGES		14.8		22.5		23.9		27.0		27.7		25.4

For purposes of calculating the ratio above:

Earnings is defined as income before income taxes, amortization of capitalized interest, and fixed charges (less capitalized interest), excluding equity in undistributed income of equity method investments. Fixed charges consist of interest expense (including capitalized interest and excluding any expense related to early extinguishment of debt) and approximately one-third of rent expense under operating leases (considered representative of the interest factor).

EX-15

EXHIBIT 15

July 26, 2018

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Commissioners:

We are aware that our report dated July 26, 2018 on our review of interim financial information of 3M Company and its subsidiaries, which appears in this Quarterly Report on Form 10-Q, is incorporated by reference in the Registration Statements on Form S-8 (Registration Nos. 333-30689, 333-30691, 333-44760, 333-73192, 333-101727, 333-109282, 333-128251, 333-130150, 333-151039, 333-156626, 333-156627, 333-166908, 333-181269, 333-181270, and 333-211431) and Form S-3 (Registration Nos. 333-216219, 33-48089, 333-42660, and 333-109211) of 3M Company.

Very truly yours,

/s/ PricewaterhouseCoopers LLP

Minneapolis, Minnesota

EX-31.1

EXHIBIT 31.1

SARBANES-OXLEY SECTION 302 CERTIFICATION

I, Michael F. Roman, certify that:

1.I have reviewed this quarterly report on Form 10-Q of 3M Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4.The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5.The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

/s/ Michael F. Roman

Michael F. Roman

Chief Executive Officer

July 26, 2018

EX-31.2

EXHIBIT 31.2

SARBANES-OXLEY SECTION 302 CERTIFICATION

I, Nicholas C. Gangestad, certify that:

1.I have reviewed this quarterly report on Form 10-Q of 3M Company;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4.The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter (the Registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5.The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

/s/ Nicholas C. Gangestad

Nicholas C. Gangestad

Chief Financial Officer

July 26, 2018

EX-32.1

EXHIBIT 32.1

SARBANES-OXLEY SECTION 906 CERTIFICATION

In connection with the Quarterly Report of 3M Company (the “Company”) on Form 10-Q for the period ended June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael F. Roman, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Michael F. Roman

Michael F. Roman

Chief Executive Officer

July 26, 2018

EX-32.2

EXHIBIT 32.2

SARBANES-OXLEY SECTION 906 CERTIFICATION

In connection with the Quarterly Report of 3M Company (the “Company”) on Form 10-Q for the period ended June 30, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Nicholas C. Gangestad, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Nicholas C. Gangestad

Nicholas C. Gangestad

Chief Financial Officer

July 26, 2018

EX-95

EXHIBIT 95

MINE SAFETY DISCLOSURES

For the second quarter of 2018, the Company has the following mine safety information to report in accordance with Section 1503(a) of the Act, in connection with the Pittsboro, North Carolina mine, the Little Rock, Arkansas mine, the Corona, California mine, and the Wausau, Wisconsin mine (including Greystone Plant):

										Received
									Received	Notice of
						Total Dollar Value			Notice of	Potential to			Aggregate
Mine or Operating			Section			of MSHA		Total Number	Pattern of	Have Pattern	Legal Actions	Aggregate	Legal Actions
Name/MSHA	Section 104	Section	104(d)	Section	Section	Assessments		of Mining	Violations	Under Section	Pending as of	Legal Actions	Resolved
Identification	S&S Citations	104(b)	Citations and	110(b)(2)	107(a)	Proposed		Related	Under Section	104(e)	Last Day of	Initiated During	During Period
Number	(#)	Orders (#)	Orders (#)	Violations (#)	Orders (#)	($)		Fatalities (#)	104(e) (yes/no)	(yes/no)	Period (#)	Period (#)	(#)
3M Pittsboro ID: 3102153	—	—	—	—	—	$	—	—	No	No	—
3M Little Rock ID: 0300426	—	—	—	—	—	$	5,530	—	No	No	—
3M Corona Plant ID: 0400191	—	—	—	—	—	$	—	—	No	No	—
Greystone Plant ID: 4700119	3	—	—	—	—	$	4,907	—	No	No	—
Wausau Plant ID: 4702918	—	—	—	—	—	$	590	—	No	No	—
Total	3	—	—	—	—	$	11,027	—			—	—	—

XML

Document and Entity Information	6 Months Ended
	Jun. 30, 2018 shares
Document and Entity Information
Entity Registrant Name	3M Company
Trading Symbol	mmm
Entity Central Index Key	0000066740
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	586,613,476
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2

XML

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statement of Income
Net sales	$ 8,390	$ 7,810	$ 16,668	$ 15,495
Operating expenses
Cost of sales	4,227	4,020	8,463	7,902
Selling, general and administrative expenses	1,800	1,620	4,373	3,234
Research, development and related expenses	468	478	954	954
Gain on sale of businesses	(506)	(461)	(530)	(490)
Total operating expenses	5,989	5,657	13,260	11,600
Operating income	2,401	2,153	3,408	3,895
Interest expense and income
Other expense (income), net	51	11	93	16
Income before income taxes	2,350	2,142	3,315	3,879
Provision for income taxes	488	557	847	968
Net income including noncontrolling interest	1,862	1,585	2,468	2,911
Less: Net income attributable to noncontrolling interest	5	2	9	5
Net income attributable to 3M	$ 1,857	$ 1,583	$ 2,459	$ 2,906
Weighted average 3M common shares outstanding - basic (in shares)	591.4	598.1	593.8	598.1
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$ 3.14	$ 2.65	$ 4.14	$ 4.86
Weighted average 3M common shares outstanding - diluted (in shares)	604.2	612.8	608.5	612.4
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$ 3.07	$ 2.58	$ 4.04	$ 4.74
Cash dividends paid per 3M common share (in dollars per share)	$ 1.36	$ 1.175	$ 2.72	$ 2.35

XML

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 1,862	$ 1,585	$ 2,468	$ 2,911
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(496)	(67)	(329)	225
Defined benefit pension and postretirement plans adjustment	114	78	230	161
Cash flow hedging instruments unrealized gain (loss)	162	(51)	101	(127)
Total other comprehensive income (loss), net of tax	(220)	(40)	2	259
Comprehensive income (loss) including noncontrolling interest	1,642	1,545	2,470	3,170
Comprehensive (income) loss attributable to noncontrolling interest	(1)	(2)	(4)	(8)
Comprehensive income (loss) attributable to 3M	$ 1,641	$ 1,543	$ 2,466	$ 3,162

XML

Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 2,801	$ 3,053
Marketable securities - current	385	1,076
Accounts receivable — net	5,383	4,911
Inventories
Finished goods	1,979	1,915
Work in process	1,292	1,218
Raw materials and supplies	967	901
Total inventories	4,238	4,034
Prepaids	713	937
Other current assets	370	266
Total current assets	13,890	14,277
Property, plant and equipment	24,758	24,914
Less: Accumulated depreciation	(16,113)	(16,048)
Property, plant and equipment - net	8,645	8,866
Goodwill	10,107	10,513
Intangible assets - net	2,787	2,936
Other assets	1,349	1,395
Total assets	36,778	37,987
Current liabilities
Short-term borrowings and current portion of long-term debt	3,225	1,853
Accounts payable	1,871	1,945
Accrued payroll	646	870
Accrued income taxes	293	310
Other current liabilities	2,867	2,709
Total current liabilities	8,902	7,687
Long-term debt	11,294	12,096
Pension and postretirement benefits	3,254	3,620
Other liabilities	2,900	2,962
Total liabilities	26,350	26,365
Commitments and contingencies (Note 14)
3M Company shareholders' equity:
Common stock par value, $.01 par value; 944,033,056 shares issued	9	9
Additional paid-in capital	5,550	5,352
Retained earnings	39,442	39,115
Treasury stock, at cost: 357,419,580 shares at June 30, 2018; 349,148,819 shares at December 31, 2017	(27,617)	(25,887)
Accumulated other comprehensive income (loss)	(7,019)	(7,026)
Total 3M Company shareholders' equity	10,365	11,563
Noncontrolling interest	63	59
Total equity	10,428	11,622
Total liabilities and equity	$ 36,778	$ 37,987

XML

Consolidated Balance Sheet (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
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)	357,419,580	349,148,819

XML

Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net income including noncontrolling interest	$ 2,468	$ 2,911
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities
Depreciation and amortization	762	818
Company pension and postretirement contributions	(261)	(279)
Company pension and postretirement expense	204	163
Stock-based compensation expense	208	206
Gain on sale of businesses	(530)	(490)
Deferred income taxes	(1)	(120)
Changes in assets and liabilities
Accounts receivable	(606)	(412)
Inventories	(337)	(347)
Accounts payable	(12)	(60)
Accrued income taxes (current and long-term)	234	257
Other - net	(87)	(17)
Net cash provided by operating activities	2,042	2,630
Cash Flows from Investing Activities
Purchases of property, plant and equipment (PP&E)	(669)	(589)
Proceeds from sale of PP&E and other assets	96	13
Acquisitions, net of cash acquired	13
Purchases of marketable securities and investments	(964)	(407)
Proceeds from maturities and sale of marketable securities and investments	1,636	543
Proceeds from sale of businesses, net of cash sold	806	862
Other - net	(11)	5
Net cash provided by investing activities	907	427
Cash Flows from Financing Activities
Change in short-term debt - net	774	(113)
Repayment of debt (maturities greater than 90 days)	(6)	(650)
Proceeds from debt (maturities greater than 90 days)	6
Purchases of treasury stock	(2,537)	(1,184)
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	305	496
Dividends paid to shareholders	(1,612)	(1,403)
Other - net	(26)	(2)
Net cash used in financing activities	(3,096)	(2,856)
Effect of exchange rate changes on cash and cash equivalents	(105)	55
Net increase (decrease) in cash and cash equivalents	(252)	256
Cash and cash equivalents at beginning of year	3,053	2,398
Cash and cash equivalents at end of period	$ 2,801	$ 2,654

XML

Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies

Significant Accounting Policies

NOTE 1.  Significant Accounting Policies

Basis of Presentation

The interim consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for a fair statement of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. These adjustments consist of normal, recurring items. The results of operations for any interim period are not necessarily indicative of results for the full year. The interim consolidated financial statements and notes are presented as permitted by the requirements for Quarterly Reports on Form 10-Q. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes included in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

As described in the “New Accounting Pronouncements” section, the Company adopted Accounting Standards Update (ASU) No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. This ASU changed how 3M presents net periodic benefit cost within its consolidated statement of income, as reflected in the table that follows. The financial information presented herein reflects these impacts for all periods presented.

Three months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	7,810	$	7,810	$	—
Operating expenses
Cost of sales		4,007		4,020		13
Selling, general and administrative expenses		1,607		1,620		13
Research, development and related expenses		473		478		5
Gain on sale of businesses		(461)		(461)		—
Total operating expenses		5,626		5,657		31
Operating income	$	2,184	$	2,153	$	(31)
Other expense (income), net	$	42	$	11	$	(31)
Income before income taxes	$	2,142	$	2,142	$	—

Six months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	15,495	$	15,495	$	—
Operating expenses
Cost of sales		7,876		7,902		26
Selling, general and administrative expenses		3,207		3,234		27
Research, development and related expenses		944		954		10
Gain on sale of businesses		(490)		(490)		—
Total operating expenses		11,537		11,600		63
Operating income	$	3,958	$	3,895	$	(63)
Other expense (income), net	$	79	$	16	$	(63)
Income before income taxes	$	3,879	$	3,879	$	—

In addition, as described in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of businesses around markets and customers. These changes included the consolidation of customer account activity within international countries (expanding dual credit reporting) and the centralization of manufacturing and supply chain technology platforms. Segment information presented herein reflects the impact of these changes for all periods presented.

The Company updated its financial information and disclosures in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) to reflect the retrospective application of ASU No. 2017-07 and the preceding business reporting changes.

Changes to Significant Accounting Policies

The following accounting policies have been updated since the Company’s 2017 Annual Report on Form 10-K (which was updated by 3M’s Current Report on Form 8-K dated May 8, 2018 in regards to the adoption of ASU 2017-07 and the business segment reporting changes discussed above).

Revenue (sales) recognition: As described in the “New Accounting Pronouncements” section,  3M adopted ASU No. 2014-09, Revenue from Contracts with Customers, and other related ASUs on January 1, 2018 using the modified retrospective transition approach. The Company’s accounting policy with respect to revenue recognition and additional disclosure relative to this ASU are included in Note 2.

Investments: As described in the “New Accounting Pronouncements” section, 3M adopted ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities,  effective January 1, 2018. As a result, all equity securities that do not result in consolidation and are not accounted for under the equity method are measured at fair value with changes therein reflected in net income. 3M utilizes the measurement alternative for equity investments that do not have readily determinable fair values and measures these investments at cost less impairment plus or minus observable price changes in orderly transactions. Further, the change in balance of these securities for the three and six months ended June 30, 2018 was not considered material for additional disclosure.

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 month-end exchange rates of the period reported. Income and expense items are translated at month-end exchange rates of each applicable month. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders’ equity.

3M has a subsidiary in Venezuela, the financial statements of which are remeasured as if its functional currency were that of its parent because Venezuela’s economic environment is considered highly inflationary. The operating income of this subsidiary is immaterial as a percent of 3M’s consolidated operating income for 2017. The Venezuelan government sets official rates of exchange and conditions precedent to purchase foreign currency at these rates with local currency. The government has also operated various expanded secondary currency exchange mechanisms that have been eliminated and replaced from time to time. Such rates and conditions have been and continue to be subject to change. For the periods presented, the financial statements of 3M’s Venezuelan subsidiary were remeasured utilizing the rate associated with the secondary auction mechanism, Tipo de Cambio Complementario (DICOM), or its predecessor. During the same periods, the Venezuelan government’s official exchange was Tipo de Cambio Protegido (DIPRO), or its predecessor, until its discontinuance in the first quarter of 2018.

Note 1 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) provides additional information the Company considers in determining the exchange rate used relative to its Venezuelan subsidiary as well as factors which could lead to its deconsolidation. The Company continues to monitor these circumstances. Changes in applicable exchange rates or exchange mechanisms may continue in the future. These changes could impact the rate of exchange applicable to remeasure the Company’s net monetary assets (liabilities) denominated in Venezuelan Bolivars (VEF). As of June 30, 2018, the Company had a balance of net monetary assets denominated in VEF of less than 860 billion VEF and the DIPRO exchange rate was approximately 96,000 VEF per U.S. dollar. A need to deconsolidate the Company’s Venezuelan subsidiary’s operations may result from a lack of exchangeability of VEF-denominated cash coupled with an acute degradation in the ability to make key operational decisions due to government regulations in Venezuela. Based upon a review of factors as of June 30, 2018, the Company continues to consolidate its Venezuelan subsidiary. As of June 30, 2018, the balance of accumulated other comprehensive loss associated with this subsidiary was approximately $145 million, and the amount of intercompany receivables due from this subsidiary and its equity balance were not significant.

3M has subsidiaries in Argentina, the operating income of which is less than one half of one percent of 3M’s consolidated operating income for 2017. Based on various indices, Argentina’s cumulative three-year inflation rate exceeded 100 percent in the second quarter of 2018, thus being considered highly inflationary. As a result, the financial statements of the Argentine subsidiaries will be remeasured as if its functional currency were that of its parent, starting in the third quarter of 2018. As of June 30, 2018, the Company had a balance of net monetary assets denominated in Argentine pesos (ARS) of less than 230 million ARS and the exchange rate was approximately 28 ARS per U.S. dollar.

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 a result of the dilution associated with the Company’s stock-based compensation plans. Certain options outstanding under these stock-based compensation plans 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 (3.5 million average options for the three months ended June 30, 2018;  2.7 million average options for the six months ended June 30, 2018; insignificant for the three months ended June 30, 2017; 1.6 million average options for the six months ended June 30, 2017). The computations for basic and diluted earnings per share follow:

Earnings Per Share Computations

	Three months ended				Six months ended
	June 30,				June 30,
(Amounts in millions, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income attributable to 3M	$	1,857	$	1,583	$	2,459	$	2,906
Denominator:
Denominator for weighted average 3M common shares outstanding – basic		591.4		598.1		593.8		598.1
Dilution associated with the Company’s stock-based compensation plans		12.8		14.7		14.7		14.3
Denominator for weighted average 3M common shares outstanding – diluted		604.2		612.8		608.5		612.4
Earnings per share attributable to 3M common shareholders – basic	$	3.14	$	2.65	$	4.14	$	4.86
Earnings per share attributable to 3M common shareholders – diluted	$	3.07	$	2.58	$	4.04	$	4.74

New Accounting Pronouncements

See the Company’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for a more detailed discussion of the standards in the tables that follow, except for those pronouncements issued subsequent to the most recent Form 10-K filing date for which separate, more detailed discussion is provided below.

Standards Adopted During the Current Fiscal Year
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2014-09, Revenue from Contracts with Customers (as amended by ASU Nos. 2015-14, 2016-08, 2016-10, 2016-12, and 2016-20) and related ASU No. 2017-10, Determining the Customer of the Operation Services	Provides a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. Core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Requires disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Specifies the accounting for some costs to obtain or fulfill a contract with a customer.	January 1, 2018	See Note 2 for detailed discussion and disclosures. Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was increased by less than $2 million.
ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	Requires investments in equity securities in an entity that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with changes therein reflected in net income. Simplifies the impairment assessment and allows for a fair value measurement alternative for equity investments without a readily determinable fair value. Eliminates the previous cost method of accounting for certain equity securities that did not have readily determinable fair values.	January 1, 2018	Measurement alternative adopted prospectively. See the preceding “Changes to Significant Accounting Policies” section for impact.
ASU No. 2016-16, Intra-Entity Transfers of Assets Other Than Inventory	Exempts income tax accounting that requires companies to defer the income tax effects of certain intercompany transactions only for intercompany inventory transactions. The exception no longer applies to intercompany sales and transfers of other assets (e.g., intangible assets).	January 1, 2018	Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was decreased by less than $2 million.
ASU No. 2017-01, Clarifying the Definition of a Business	Narrows the previous definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business.	January 1, 2018	Adopted prospectively with no immediate impact. Fewer sets of transferred assets and activities are expected to be considered businesses.
ASU No. 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets	Largely impacts the sale of nonfinancial assets (such as real estate and intellectual property) that do not constitute a business, when the purchaser is not a customer. Seller applies certain recognition and measurement principles of ASU No. 2014-09, Revenue from Contracts with Customers, even though the purchaser is not a customer.	January 1, 2018	Adopted coincident with the adoption of ASU No. 2014-09 with no material impact.

Standards Adopted During the Current Fiscal Year (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	Changes previous classification of net periodic defined benefit pension and postretirement benefit costs within operating expenses. Requires that only the service cost component of net periodic benefit cost be included in operating expenses and that only the service cost component is eligible for capitalization into assets such as inventory. Specifies that other net periodic benefit costs components (such as interest, expected return on plan assets, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income.	January 1, 2018	Adopted on a retrospective basis. No impact on previously reported income before income taxes and net income attributable to 3M. However, non-service cost components of net periodic benefit costs in prior periods have been reclassified from operating expenses and are now reported outside of operating income within other expense (income), net. See the “Basis of Presentation” section above for impact of this ASU’s adoption on prior period income statement amounts.  Prospective impact on costs capitalized into assets was not material.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.

Standards Issued and Not Yet Adopted
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2016-02, Leases (as amended by ASU No. 2018-10)	Introduces a lessee model that requires entities to recognize assets and liabilities for most leases, but recognize expenses on their income statements in a manner similar to current accounting. This ASU does not make fundamental changes to existing lessor accounting.	January 1, 2019	Requires modified retrospective transition applied to earliest period presented 3M is currently assessing this ASU’s impact. See the “Relevant New Standards Issued Subsequent to Most Recent Annual Report” below for further discussion on ASU No. 2018-10 issued in July 2018.
ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments	Introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments and modifies the impairment model for available-for-sale debt securities. Amends the current other-than-temporary impairment model for available-for-sale debt securities. For such securities with unrealized losses, entities will still consider if a portion of any impairment is related only to credit losses and therefore recognized as a reduction in income.	January 1, 2020	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. 3M is currently assessing this ASU’s impact.
ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities	Shortens the amortization period to the earliest call date for the premium related to certain callable debt securities that have explicit, noncontingent call features and are callable at a fixed price and preset date.	January 1, 2019	3M’s marketable security portfolio includes limited instances of callable debt securities held at a premium. 3M does not expect this ASU to have a material impact.

Standards Issued and Not Yet Adopted (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception	Amends (1) the classification of financial instruments with down-round features as liabilities or equity by revising certain guidance relative to evaluating if they must be accounted for as derivative instruments and (2) the guidance on recognition and measurement of freestanding equity-classified instruments.	January 1, 2019	No financial instruments with down-round features have been issued. 3M does not expect this ASU to have a material impact.
ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities	Amends existing guidance to simplify application of hedge accounting in certain situations and allow companies to better align their hedge accounting with risk management activities. Simplifies related accounting by eliminating requirement to separately measure and report hedge ineffectiveness. Expands an entity’s ability to hedge nonfinancial and financial risk components.	January 1, 2019	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted.   3M is currently assessing this ASU’s impact.

Relevant New Standards Issued Subsequent to Most Recent Annual Report

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which permits entities to reclassify, to retained earnings, the one-time income tax effects stranded in accumulated other comprehensive income (AOCI) arising from the change in the U.S. federal corporate tax rate as a result of the Tax Cuts and Jobs Act of 2017. An entity that elects to make this reclassification must consider all items in AOCI that have tax effects stranded as a result of the tax rate change, and must disclose the reclassification of these tax effects as well as the entity’s policy for releasing income tax effects from AOCI. The ASU may be applied either retrospectively or as of the beginning of the period of adoption. For 3M, the ASU is effective January 1, 2019. While this ASU will have no impact on 3M’s results of operations, the Company is currently assessing this standard’s impact on its consolidated financial condition.

In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting, which largely aligns the measurement and classification guidance for share-based payments to nonemployees with the guidance for share-based payments to employees. The ASU also clarifies that any share-based payment issued to a customer should be evaluated under ASC 606, Revenue from Contracts with Customers. The ASU requires a modified retrospective transition approach. For 3M, the ASU is effective as of January 1, 2019. Because the Company does not grant share-based payments to nonemployees or customers, this ASU will not have a material impact on its consolidated results of operations and financial condition.

In June 2018, the FASB issued ASU No. 2018-08, Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The ASU applies to entities that receive or make contributions, which primarily are not-for-profit entities but also affects business entities that make contributions. In the context of business entities that make contributions, the FASB clarified that a contribution is conditional if the arrangement includes both a barrier for the recipient to be entitled to the assets transferred and a right of return for the assets transferred (or a right of release of the business entity’s obligation to transfer assets). The recognition of contribution expense is deferred for conditional arrangements and is immediate for unconditional arrangements. The ASU requires modified prospective transition to arrangements that have not been completed as of the effective date or that are entered into after the effective date, but full retrospective application to each period presented is permitted. For 3M, the ASU is effective as of January 1, 2019. The Company does not expect this ASU to have a material impact on its consolidated results of operations and financial condition.

In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases, which amends ASU No. 2016-02, Leases. The new ASU includes certain clarifications to address potential narrow-scope implementation issues which the Company is incorporating into its assessment and adoption of ASU No. 2016-02. This ASU has the same transition requirements and effective date as ASU No. 2016-02, which for 3M is January 1, 2019.

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Revenue

6 Months Ended

Jun. 30, 2018

Revenue

Revenue

NOTE 2.  Revenue

The Company adopted ASU No. 2014-09 and related standards (collectively, Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers), as described in Note 1, on January 1, 2018 using the modified retrospective method of adoption. Prior periods have not been restated. Due to the cumulative net impact of adopting ASC 606, the January 1, 2018 balance of retained earnings was increased by less than $2 million, primarily relating to the accelerated recognition for software installation service and training revenue. This cumulative impact reflects retrospective application of ASC 606 only to contracts that were not completed as of January 1, 2018. Further, the Company applied the practical expedient permitting the effect of all contract modifications that occurred before January 1, 2018 to be aggregated in the transition accounting. The impact of applying ASC 606 as compared with previous guidance applied to revenues and costs was not material for the three and six months ended June 30, 2018.

Performance Obligations:

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 or significant payment terms extended to customers. The vast majority of 3M’s customer arrangements contain a single performance obligation to transfer manufactured goods as the promise to transfer the individual goods is not separately identifiable from other promises in the contracts and, therefore, not distinct.However, to a limited extent 3M also enters into customer arrangements that involve intellectual property out-licensing, multiple performance obligations (such as equipment, installation and service), software with coterminous post-contract support, services and non-standard terms and conditions.

Revenue is recognized when control of goods has transferred to customers. For the majority of the Company’s customer arrangements, control transfers to customers at a point-in-time when goods/services have been delivered as that is generally when legal title, physical possession and risks and rewards of goods/services transfers to the customer. In limited arrangements, control transfers over time as the customer simultaneously receives and consumes the benefits as 3M completes the performance obligation(s).

Revenue is recognized at the transaction price which the Company expects to be entitled. When determining the transaction price, 3M estimates variable consideration applying the portfolio approach practical expedient under ASC 606. The main sources of variable consideration for 3M are customer rebates, trade promotion funds, and cash discounts. These sales incentives are recorded as a reduction to revenue at the time of the initial sale using the most-likely amount estimation method. The most-likely amount method is based on the single most likely outcome from a range of possible consideration outcomes. The range of possible consideration outcomes are primarily derived from the following inputs: sales terms, historical experience, trend analysis, and projected market conditions in the various markets served. Because 3M serves numerous markets, the sales incentive 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. There are no material instances where variable consideration is constrained and not recorded at the initial time of sale. Free goods are accounted for as an expense and recorded in cost of sales. Product returns are recorded as a reduction to revenue based on anticipated sales returns that occur in the normal course of business. 3M primarily has assurance-type warranties that do not result in separate performance obligations. Sales, use, value-added, and other excise taxes are not recognized in revenue. The Company has elected to present revenue net of sales taxes and other similar taxes.

For substantially all arrangements recognized over time, the Company applies the “right to invoice” practical expedient. As a result, 3M recognizes revenue at the invoice amount when the entity has a right to invoice a customer at an amount that corresponds directly with the value to the customer of the Company’s performance completed to date.

For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using 3M’s best estimate of the standalone selling price of each distinct good or service in the contract.

The Company did not recognize any material revenue in the current reporting period for performance obligations that were fully satisfied in previous periods.

Contract Balances:

Deferred income (current portion) as of June 30, 2018 and December 31, 2017 was $512 million and $513 million, respectively, and primarily relates to revenue that is recognized over time for one-year software license contracts, the changes in balance of which are related to the satisfaction or partial satisfaction of these contracts. The balance also contains a deferral of income for goods that are in-transit at period end for which control transfers to the customer upon delivery. Approximately $110 million and $390 million of the December 31, 2017 balance was recognized as revenue during the three and six months ended June 30, 2018, respectively. The amount of noncurrent deferred income is not considered significant.

Exemptions and Practical Expedients Applied or Elected:

3M applies ASC 606 utilizing the following allowable exemptions or practical expedients:

· Exemption to not disclose the unfulfilled performance obligation balance for contracts with an original length of one year or less.

· Practical expedient relative to costs of obtaining a contract by expensing sales commissions when incurred because the amortization period would have been one year or less.

· Portfolio approach practical expedient relative to estimation of variable consideration.

· “Right to invoice” practical expedient based on 3M’s right to invoice the customer at an amount that reasonably represents the value to the customer of 3M’s performance completed to date.

· Election to present revenue net of sales taxes and other similar taxes.

· Sales-based royalty exemption permitting future intellectual property out-licensing royalty payments to be excluded from the otherwise required remaining performance obligations disclosure.

Disaggregated revenue information:

The Company views the following disaggregated disclosures as useful to understanding the composition of revenue recognized during the respective reporting periods:

	Three months ended				Six months ended
	June 30,				June 30,
Net Sales (Millions)	2018		2017		2018		2017
Abrasives	$	473	$	437	$	948	$	867
Adhesives and Tapes		1,165		1,096		2,318		2,171
Advanced Materials		317		287		621		574
Automotive and Aerospace		519		489		1,078		997
Automotive Aftermarket		438		418		856		835
Separation and Purification		238		219		474		439
Other Industrial		(2)		—		(3)		(1)
Total Industrial Business Group	$	3,148	$	2,946	$	6,292	$	5,882
Commercial Solutions	$	502	$	457	$	987	$	900
Personal Safety		957		721		1,919		1,428
Roofing Granules		99		96		200		193
Transportation Safety		257		295		493		598
Other Safety and Graphics		—		—		(1)		—
Total Safety and Graphics Business Group	$	1,815	$	1,569	$	3,598	$	3,119
Drug Delivery	$	119	$	120	$	238	$	241
Food Safety		84		76		166		149
Health Information Systems		205		195		410		386
Medical Solutions		772		729		1,548		1,443
Oral Care		342		330		696		666
Other Health Care		(2)		(1)		(2)		(1)
Total Health Care Business Group	$	1,520	$	1,449	$	3,056	$	2,884
Electronics	$	925	$	883	$	1,856	$	1,761
Energy		411		404		831		817
Other Electronics and Energy		1		3		—		3
Total Electronics and Energy Business Group	$	1,337	$	1,290	$	2,687	$	2,581
Consumer Health Care	$	100	$	104	$	202	$	206
Home Care		255		253		524		514
Home Improvement		507		460		954		868
Stationery and Office		351		340		650		632
Other Consumer		10		12		20		22
Total Consumer Business Group	$	1,223	$	1,169	$	2,350	$	2,242
Corporate and Unallocated	$	12	$	2	$	12	$	3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495

	Three months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,182	$	870	$	777	$	318	$	1	$	3,148
Safety and Graphics			747		419		443		206		—		1,815
Health Care			703		292		381		145		(1)		1,520
Electronics and Energy			244		899		131		63		—		1,337
Consumer			742		236		138		105		2		1,223
Corporate and Unallocated			8		1		1		4		(2)		12
Elimination of Dual Credit			(278)		(213)		(113)		(60)		(1)		(665)
Total Company		$	3,348	$	2,504	$	1,758	$	781	$	(1)	$	8,390

	Six months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,282	$	1,814	$	1,562	$	634	$	—	$	6,292
Safety and Graphics			1,399		916		879		404		—		3,598
Health Care			1,405		591		775		286		(1)		3,056
Electronics and Energy			473		1,810		276		129		(1)		2,687
Consumer			1,352		508		279		211		—		2,350
Corporate and Unallocated			8		—		1		3		—		12
Elimination of Dual Credit			(527)		(459)		(222)		(119)		—		(1,327)
Total Company		$	6,392	$	5,180	$	3,550	$	1,548	$	(2)	$	16,668

	Three months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,114	$	810	$	709	$	314	$	(1)	$	2,946
Safety and Graphics			639		370		364		195		1		1,569
Health Care			697		261		353		137		1		1,449
Electronics and Energy			233		855		136		67		(1)		1,290
Consumer			694		231		139		105		—		1,169
Corporate and Unallocated			2		2		—		(1)		(1)		2
Elimination of Dual Credit			(252)		(207)		(96)		(60)		—		(615)
Total Company		$	3,127	$	2,322	$	1,605	$	757	$	(1)	$	7,810

	Six months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,196	$	1,663	$	1,405	$	619	$	(1)	$	5,882
Safety and Graphics			1,220		801		715		383		—		3,119
Health Care			1,387		521		706		270		—		2,884
Electronics and Energy			464		1,706		279		132		—		2,581
Consumer			1,281		490		265		207		(1)		2,242
Corporate and Unallocated			3		1		—		—		(1)		3
Elimination of Dual Credit			(483)		(427)		(188)		(118)		—		(1,216)
Total Company		$	6,068	$	4,755	$	3,182	$	1,493	$	(3)	$	15,495

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Acquisitions and Divestitures

6 Months Ended

Jun. 30, 2018

Acquisitions and Divestitures

Acquisitions and Divestitures

NOTE 3.  Acquisitions and Divestitures

Acquisitions:

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

There were no business combinations that closed during the six months ended June 30, 2018and 2017.

As discussed in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K), in October 2017, 3M completed the acquisition of Scott Safety for $2.0 billion of cash, net of cash acquired. Adjustments in 2018 to the purchase price allocation were approximately $16 million and related to identification of certain immaterial acquired assets and resolution of certain acquired working capital and other purchase price adjustments with the seller. The change to provisional amounts did not result in material impacts to results of operations in 2018 or any portion related to earlier quarters in the measurement period. The allocation of purchase consideration related to Scott Safety is considered preliminary with provisional amounts primarily related to intangible assets and certain tax-related and contingent liability items. 3M expects to finalize the allocation of purchase price within the one year measurement-period following the acquisition.

Divestitures:

3M may divest certain businesses from time to time based upon reviews of the Company’s portfolio considering, among other items, factors relative to the extent of strategic and technological alignment and optimization of capital deployment, in addition to considering if selling the businesses results in the greatest value creation for the Company and its shareholders.

2018 divestitures:

In February 2018, 3M closed on the sale of certain personal safety product offerings primarily focused on noise, environmental, and heat stress monitoring to TSI, Inc. This business has annual sales of approximately $15 million. The transaction resulted in a pre-tax gain of less than $20 million that was reported within the Company’s Safety and Graphics business.

In addition, during the first quarter of 2018, 3M divested a polymer additives compounding business, formerly part of the Company’s Industrial business, and reflected a gain on final closing adjustments from a prior divestiture which, in aggregate, were not material.

In May 2018, 3M divested an abrasives glass products business, formerly part of the Company’s Industrial business, with annual sales of approximately $10 million. The transaction resulted in a pre-tax gain of less than $15 million.

In June 2018, 3M completed the sale of substantially all of its Communication Markets Division to Corning Incorporated. This business, with annual sales of approximately $400 million, consists of optical fiber and copper passive connectivity solutions for the telecommunications industry including 3M’s xDSL, FTTx, and structured cabling solutions and, in certain countries, telecommunications system integration services. 3M received cash proceeds of $772 million and reflected a pre-tax gain of $494 million as a result of this divestiture, which was reported within the Company’s Electronics and Energy business.  The sale of the telecommunications system integration services portion of the business based in Germany for approximately $30 million remains pending and is expected to be completed by the end of 2018.

2017 divestitures:

During 2017, as described in Note 2 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K), the Company divested of a number of business including its: safety prescription eyewear; identity management; tolling and automated license/number plate recognition; electronic monitoring; and electrical marking/labeling businesses.

The aggregate operating income of these businesses was approximately $25 million and $10 million in the first six months of 2018 and 2017, respectively. The approximate amounts of major assets and liabilities associated with disposal groups classified as held-for-sale as of June 30, 2018 were not material and as of December 31, 2017 included the following:

	December 31,
(Millions)	2017
Accounts receivable	$	25
Property, plant and equipment (net)		20

In addition, an immaterial amount and approximately $275 million of goodwill was estimated to be attributable to disposal groups classified as held-for-sale as of June 30, 2018 and December 31, 2017, respectively, based upon relative fair value. The amounts above have not been segregated and are classified within the existing corresponding line items on the Company’s consolidated balance sheet.

Refer to Note 2 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for more information on 3M’s acquisitions and divestitures.

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Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets

Goodwill and Intangible Assets

NOTE 4.  Goodwill and Intangible Assets

There were no acquisitions that closed during the first six months of 2018. The acquisition activity in the following table relates to the net impact of adjustments to the preliminary allocation of purchase price within the one year measurement period following prior acquisitions, which decreased goodwill by $16 million during the six months ended June 30, 2018. Divestiture activity within the Electronics and Energy business segment relates to the sale of substantially all of the Communication Markets Division. The amounts in the “Translation and other” column in the following table primarily relate to changes in foreign currency exchange rates. The goodwill balances by business segment as of December 31, 2017 and June 30, 2018, follow:

Goodwill

	December 31, 2017		Acquisition		Divestiture		Translation		June 30, 2018
(Millions)	Balance		activity		activity		and other		Balance
Industrial	$	2,678	$	—	$	(4)	$	(44)	$	2,630
Safety and Graphics		4,419		(16)		(8)		(57)		4,338
Health Care		1,682		—		—		(19)		1,663
Electronics and Energy		1,524		—		(247)		(10)		1,267
Consumer		210		—		—		(1)		209
Total Company	$	10,513	$	(16)	$	(259)	$	(131)	$	10,107

Accounting standards require that goodwill be tested for impairment annually and between annual tests in certain circumstances such as a change in reporting units or the testing of recoverability of a significant asset group within a reporting unit. At 3M, reporting units generally correspond to a division.

As described in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of its businesses around markets and customers. In addition, certain shared film manufacturing and supply technology platform resources formerly reflected within the Electronics and Energy business segment were combined with other shared and centrally managed material resource centers of expertise within Corporate and Unallocated. For any product changes 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 2018, the Company completed its assessment of any potential goodwill impairment for reporting units impacted by this new structure and determined that no impairment existed.

Acquired Intangible Assets

The carrying amount and accumulated amortization of acquired finite-lived intangible assets, in addition to the balance of non-amortizable intangible assets, as of June 30, 2018, and December 31, 2017, follow:

	June 30,		December 31,
(Millions)	2018		2017
Customer related intangible assets	$	2,302	$	2,332
Patents		554		561
Other technology-based intangible assets		578		583
Definite-lived tradenames		676		678
Other amortizable intangible assets		204		207
Total gross carrying amount	$	4,314	$	4,361
Accumulated amortization — customer related		(931)		(874)
Accumulated amortization — patents		(491)		(489)
Accumulated amortization — other technology based		(312)		(292)
Accumulated amortization — definite-lived tradenames		(272)		(256)
Accumulated amortization — other		(164)		(162)
Total accumulated amortization	$	(2,170)	$	(2,073)
Total finite-lived intangible assets — net	$	2,144	$	2,288
Non-amortizable intangible assets (primarily tradenames)		643		648
Total intangible assets — net	$	2,787	$	2,936

3M does not amortize certain acquired tradenames because they have been in existence for over 55 years, have a history of leading-market share positions, are intended to be continuously renewed, and the associated products are expected to generate cash flows for 3M for an indefinite period of time.

Amortization expense for acquired intangible assets for the three and six months ended June 30, 2018 and 2017 follows:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Amortization expense	$	63	$	47	$	127	$	111

Expected amortization expense for acquired amortizable intangible assets recorded as of June 30, 2018:

	Remainder of												After
(Millions)	2018		2019		2020		2021		2022		2023		2023
Amortization expense	$	123	$	241	$	229	$	220	$	206	$	175	$	950

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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Restructuring Actions and Exit Activities

6 Months Ended

Jun. 30, 2018

Restructuring Actions and Exit Activities

Restructuring Actions and Exit Activities

NOTE 5.  Restructuring Actions and Exit Activities

2018 Restructuring Actions:

During the second quarter of 2018, management approved and committed to undertake certain restructuring actions related to addressing corporate functional costs following the Communication Markets Division divestiture. These actions affected approximately 900 positions worldwide and resulted in a second quarter 2018 pre-tax charge of $105 million, essentially all within Corporate and Unallocated.

The restructuring charges were recorded in the income statement as follows:

(Millions)	Second Quarter 2018
Cost of sales	$	12
Selling, general and administrative expenses		89
Research, development and related expenses		4
Total	$	105

Components of these restructuring actions, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2018	$	105
Cash payments		(6)
Accrued restructuring action balances as of June 30, 2018	$	99

Remaining activities related to this restructuring are expected to be largely completed through the first half of 2019.

2017 Restructuring Actions:

During the second quarter of 2017, management approved and committed to undertake certain restructuring actions primarily focused on portfolio and footprint optimization. These actions affected approximately 1,300 positions worldwide and resulted in a second quarter 2017 pre-tax charge of $99 million.

Components of these restructuring actions, including cash and non-cash impacts, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2017	$	99
Cash payments		(8)
Adjustments		(3)
Accrued restructuring action balances as of December 31, 2017	$	88
Cash payments		(13)
Adjustments		(27)
Accrued restructuring action balances as of June 30, 2018	$	48

Remaining activities related to this restructuring are expected to be completed by the end of 2018. A portion of the adjustments detailed above include certain severance accruals taken in 2017, the obligation for which was relieved and reflected as part of the gain on divestiture when that business was sold in 2018.

2017 Exit Activities:

During the first quarter of 2017, the Company recorded net pre-tax charges of $24 million related to exit activities. These charges related to employee reductions, primarily in Western Europe.

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Supplemental Income Statement Information

6 Months Ended

Jun. 30, 2018

Supplemental Income Statement Information

Supplemental Income Statement Information

NOTE 6.  Supplemental Income Statement Information

Other expense (income), net consists of the following:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Interest expense	$	88	$	54	$	170	$	99
Interest income		(16)		(12)		(37)		(20)
Pension and postretirement net periodic benefit cost (benefit)		(21)		(31)		(40)		(63)
Total	$	51	$	11	$	93	$	16

Pension and postretirement net periodic benefit costs described in the table above include all components of defined benefit plan net periodic benefit costs except service cost, which is reported in various operating expense lines. Refer to Note 11 for additional details on the components of pension and postretirement net periodic benefit costs.

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Supplemental Equity and Comprehensive Income Information

6 Months Ended

Jun. 30, 2018

Supplemental Equity and Comprehensive Income Information

Supplemental Equity and Comprehensive Income Information

NOTE 7.  Supplemental Equity and Comprehensive Income Information

Consolidated Statement of Changes in Equity

Three months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2018	$	11,039	$	5,505	$	38,453	$	(26,178)	$	(6,803)	$	62
Net income		1,862				1,857						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(496)								(492)		(4)
Defined benefit pension and post-retirement plans adjustment		114								114		—
Cash flow hedging instruments - unrealized gain (loss)		162								162		—
Total other comprehensive income (loss), net of tax		(220)
Dividends declared		(802)				(802)
Stock-based compensation		54		54
Reacquired stock		(1,591)						(1,591)
Issuances pursuant to stock option and benefit plans		86				(66)		152
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

Six months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2017	$	11,622	$	5,361	$	39,115	$	(25,887)	$	(7,026)	$	59
Net income		2,468				2,459						9
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(329)								(324)		(5)
Defined benefit pension and post-retirement plans adjustment		230								230		—
Cash flow hedging instruments - unrealized gain (loss)		101								101		—
Total other comprehensive income (loss), net of tax		2
Dividends declared		(1,612)				(1,612)
Stock-based compensation		198		198
Reacquired stock		(2,563)						(2,563)
Issuances pursuant to stock option and benefit plans		313				(520)		833
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

Three months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2017	$	11,040	$	5,198	$	38,094	$	(25,354)	$	(6,949)	$	51
Net income		1,585				1,583						2
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(67)								(67)		—
Defined benefit pension and post-retirement plans adjustment		78								78		—
Cash flow hedging instruments - unrealized gain (loss)		(51)								(51)		—
Total other comprehensive income (loss), net of tax		(40)
Dividends declared		(701)				(701)
Stock-based compensation		55		55
Reacquired stock		(475)						(475)
Issuances pursuant to stock option and benefit plans		180				(183)		363
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

Six months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2016	$	10,343	$	5,070	$	37,907	$	(25,434)	$	(7,245)	$	45
Net income		2,911				2,906						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		225								222		3
Defined benefit pension and post-retirement plans adjustment		161								161		—
Cash flow hedging instruments - unrealized gain (loss)		(127)								(127)		—
Total other comprehensive income (loss), net of tax		259
Dividends declared		(1,403)				(1,403)
Stock-based compensation		183		183
Reacquired stock		(1,153)						(1,153)
Issuances pursuant to stock option and benefit plans		504				(617)		1,121
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

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

Three months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2018, net of tax:	$	(1,470)	$	(5,160)	$	(173)	$	(6,803)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(411)		—		182		(229)
Amounts reclassified out		—		151		28		179
Total other comprehensive income (loss), before tax		(411)		151		210		(50)
Tax effect		(81)		(37)		(48)		(166)
Total other comprehensive income (loss), net of tax		(492)		114		162		(216)
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

Six months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2017, net of tax:	$	(1,638)	$	(5,276)	$	(112)	$	(7,026)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(282)		—		100		(182)
Amounts reclassified out		—		302		62		364
Total other comprehensive income (loss), before tax		(282)		302		162		182
Tax effect		(42)		(72)		(61)		(175)
Total other comprehensive income (loss), net of tax		(324)		230		101		7
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

Three months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2017, net of tax:	$	(1,719)	$	(5,245)	$	15	$	(6,949)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(167)		—		(74)		(241)
Amounts reclassified out		—		119		(5)		114
Total other comprehensive income (loss), before tax		(167)		119		(79)		(127)
Tax effect		100		(41)		28		87
Total other comprehensive income (loss), net of tax		(67)		78		(51)		(40)
Balance at June 30, 2017, net of tax:	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Six months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2016, net of tax:	$	(2,008)	$	(5,328)	$	91	$	(7,245)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		59		—		(175)		(116)
Amounts reclassified out		—		238		(23)		215
Total other comprehensive income (loss), before tax		59		238		(198)		99
Tax effect		163		(77)		71		157
Total other comprehensive income (loss), net of tax		222		161		(127)		256
Balance at June 30, 2017, net of tax	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation do 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
Details about Accumulated Other	Accumulated Other Comprehensive Income
Comprehensive Income Components	Three months ended June 30,				Six months ended June 30,				Location on Income
(Millions)	2018		2017		2018		2017		Statement
Gains (losses) associated with defined benefit pension and postretirement plans amortization
Prior service benefit	$	19	$	22	$	38	$	44	See Note 11
Net actuarial loss		(170)		(141)		(340)		(282)	See Note 11
Total before tax		(151)		(119)		(302)		(238)
Tax effect		37		41		72		77	Provision for income taxes
Net of tax	$	(114)	$	(78)	$	(230)	$	(161)
Cash flow hedging instruments gains (losses)
Foreign currency forward/option contracts	$	(27)	$	5	$	(61)	$	23	Cost of sales
Interest rate swap contracts		(1)		—		(1)		—	Interest expense
Total before tax		(28)		5		(62)		23
Tax effect		7		(2)		15		(8)	Provision for income taxes
Net of tax	$	(21)	$	3	$	(47)	$	15
Total reclassifications for the period, net of tax	$	(135)	$	(75)	$	(277)	$	(146)

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Income Taxes

6 Months Ended

Jun. 30, 2018

Income Taxes.

Income Taxes

NOTE 8.  Income Taxes

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 2005.

The IRS has completed its field examination of the Company’s U.S. federal income tax returns for the years 2005 through 2014, and 2016. The Company protested certain IRS positions within these tax years and entered into the administrative appeals process with the IRS. Currently, the Company is under examination by the IRS for its U.S. federal income tax returns for the years 2015 and 2017. As of June 30, 2018, the IRS has not proposed any significant adjustments to the Company’s tax positions for which the Company is not adequately reserved.

Payments relating to other proposed assessments arising from the 2005 through 2017 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 audit activity in several U.S. state and foreign jurisdictions.

3M anticipates changes to the Company’s uncertain tax positions due to the closing and resolution of audit issues for various audit years mentioned above and closure of statutes. Currently, the Company is estimating a decrease in unrecognized tax benefits during the next 12 months as a result of anticipated resolutions of audit issues. The total amounts of unrecognized tax benefits that, if recognized, would affect the effective tax rate as of June 30, 2018 and December 31, 2017 are $493 million and $526 million, respectively.

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 $6 million of benefit and $5 million of expense for the three months ended June 30, 2018 and June 30, 2017, respectively, and approximately $3 million and $8 million of expense for the six months ended June 30, 2018 and June 30, 2017, respectively. At June 30, 2018 and December 31, 2017, accrued interest and penalties in the consolidated balance sheet on a gross basis were $60 million and $68 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.

The provision for income taxes is determined using the asset and liability approach. Under this approach, a valuation allowance is recorded to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of June 30, 2018 and December 31, 2017, the Company had valuation allowances of $83 million and $81 million on its deferred tax assets, respectively.

The effective tax rate for the second quarter of 2018 was 20.8 percent, compared to 26.0 percent in the second quarter of 2017, a decrease of 5.2 percentage points. Primary factors that decreased the Company’s effective tax rate included favorable aspects of the 2017 Tax Cuts and Jobs Act (TCJA) such as the decrease in the U.S. income tax rate and provisions incentivizing foreign-derived intangible income (FDII), in addition to impacts associated with composition of geographic mix of income before taxes. These decreases were partially offset by multiple factors that increased the Company’s effective tax rate. These increases were primarily driven by lower excess tax benefits related to employee share-based payments and impacts of the TCJA such as the global intangible low-taxed income (GILTI) provision and the elimination of the domestic manufacturing deduction.

The effective tax rate for the first six months of 2018 was 25.6 percent, compared to 25.0 percent in the first six months of 2017, an increase of 0.6 percentage points. Factors that increased the Company’s effective tax rate primarily related to impacts of the TCJA such as the first quarter 2018 measurement period adjustment to the provisional accounting of the TCJA’s enactment (discussed further below) as well as the TCJA’s GILTI provision and the elimination of the domestic manufacturing deduction. Lower excess tax benefits year-over-year related to employee share-based payments also increased the Company’s effective tax rate. These increases were partially offset by multiple factors that decreased the Company’s effective tax rate, including favorable aspects of the TCJA such as the decrease in the U.S. income tax rate and FDII, in addition to impacts associated with composition of income before taxes from both a geographic and a  discrete item (such as the resolution of the NRD Lawsuit, as defined and described in Note 14) perspective.

The TCJA was enacted in December 2017. Among other things, the TCJA reduces the U.S. federal corporate tax rate from 35 percent to 21 percent beginning in 2018, requires companies to pay a one-time transition tax on previously unremitted earnings of non-U.S. subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings. The SEC staff issued Staff Accounting Bulletin (SAB) 118, which provides guidance on accounting for enactment effects of the TCJA. SAB 118 provides a measurement period of up to one year from the TCJA’s enactment date for companies to complete their accounting under ASC 740. In accordance with SAB 118, to the extent that a company’s accounting for certain income tax effects of the TCJA is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in its financial statements. If a company cannot determine a provisional estimate to be included in its financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the TCJA. In connection with 3M’s initial analysis of the impact of the enactment of the TCJA, the Company recorded a net tax expense of $762 million in the fourth quarter of 2017. As further discussed below, during the first quarter of 2018, 3M recognized a measurement period adjustment resulting in an additional tax expense of $217 million to this provisional accounting. The Company made no additional adjustments in the second quarter of 2018.

Transition tax: 3M was able to make a reasonable estimate of the transition tax and recorded a provisional obligation and related income tax expense of $745 million in the fourth quarter of 2017, with an additional $132 million in the first quarter of 2018 as a result of subsequent U.S. Internal Revenue Service guidance. The Company made no additional adjustments in the second quarter of 2018. The Company continues to gather additional information and will consider further guidance to more precisely compute the transition tax. The provisional amount may change when 3M finalizes the calculation of post-1986 foreign earnings and profit previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. The TCJA’s transition tax is payable over eight years beginning in 2018. As of June 30, 2018, 3M reflected $74 million and $733 million in current accrued income taxes and long-term income taxes payable, respectively, associated with the transition tax.

Remeasurement of deferred tax assets/liabilities and other impacts: 3M remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21 percent under the TCJA. In the fourth quarter of 2017, 3M recorded a net additional income tax expense of $17 million related to remeasurement of deferred tax assets/liabilities and other impacts. In the first quarter of 2018, 3M recorded an additional tax expense of $85 million as a measurement period adjustment as a result of subsequent U.S. Internal Revenue Service guidance and other impacts related to TCJA. The Company made no additional adjustments in the second quarter of 2018. 3M is still analyzing certain aspects of the TCJA, considering additional technical guidance, and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. This includes the potential impacts of the GILTI provision within the TCJA on deferred tax assets/liabilities. 3M also is considering other impacts of the 2017 enactment of the TCJA including, but not limited to, effects on the Company’s indefinite reinvestment assertion. 3M previously has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. The full effects of underlying tax rates of the TCJA causes some reassessment of previous indefinite reinvestment assertions with respect to certain jurisdictions. While 3M was able to make a reasonable estimate of these impacts, it may be affected by other analyses related to the TCJA, including, but not limited to, the calculation of the transition tax on deferred foreign income.

3M has not completed its full analysis with respect to the GILTI provision within the TCJA. While 3M has recorded current tax on GILTI relative to 2018 operations, the Company has not yet elected a policy as to whether it will recognize deferred taxes for basis differences expected to reverse as GILTI or whether 3M will account for GILTI as period costs if and when incurred.

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Marketable Securities

6 Months Ended

Jun. 30, 2018

Marketable Securities.

Marketable Securities

NOTE 9.  Marketable Securities

The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).

(Millions)	June 30, 2018		December 31, 2017
Corporate debt securities	$	—	$	14
Commercial paper		347		899
Certificates of deposit/time deposits		31		76
U.S. municipal securities		4		3
Asset-backed securities:
Automobile loan related		3		16
Credit card related		—		68
Asset-backed securities total		3		84
Current marketable securities	$	385	$	1,076
U.S. municipal securities	$	26	$	27
Non-current marketable securities	$	26	$	27
Total marketable securities	$	411	$	1,103

At June 30, 2018 and December 31, 2017, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.

The balances at June 30, 2018 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)	June 30, 2018
Due in one year or less	$	382
Due after one year through five years		15
Due after five years through ten years		14
Total marketable securities	$	411

3M does not currently expect risk related to its holding in asset-backed securities to materially impact its financial condition or liquidity.

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Long-Term Debt and Short-Term Borrowings

6 Months Ended

Jun. 30, 2018

Long-Term Debt and Short-Term Borrowings

Long-Term Debt and Short-Term Borrowings

NOTE 10.  Long-Term Debt and Short-Term Borrowings

As of June 30, 2018 and December 31, 2017, the Company had approximately $1.5 billion and $745 million, respectively, in commercial paper outstanding.

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Pension and Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2018

Pension and Postretirement Benefit Plans

Pension and Postretirement Benefit Plans

NOTE 11.  Pension and Postretirement Benefit Plans

The service cost component of defined benefit net periodic benefit cost is recorded in cost of sales, selling, general and administrative expenses, and research, development and related expenses. The other components of net periodic benefit cost are reflected in other expense (income), net. Components of net periodic benefit cost and other supplemental information for the three and six months ended June 30, 2018 and 2017 follow:

Benefit Plan Information

	Three months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	72	$	67	$	37	$	34	$	13	$	12
Non-operating expense
Interest cost	$	141	$	142	$	40	$	37	$	20	$	20
Expected return on plan assets		(272)		(259)		(79)		(69)		(21)		(21)
Amortization of prior service benefit		(6)		(6)		(3)		(3)		(10)		(13)
Amortization of net actuarial loss		126		97		29		30		15		14
Total non-operating expense (benefit)		(11)		(26)		(13)		(5)		4		—
Total net periodic benefit cost (benefit)	$	61	$	41	$	24	$	29	$	17	$	12

	Six months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	144	$	134	$	73	$	67	$	26	$	25
Non-operating expense
Interest cost	$	282	$	284	$	80	$	74	$	40	$	39
Expected return on plan assets		(544)		(518)		(157)		(138)		(42)		(42)
Amortization of prior service benefit		(12)		(12)		(6)		(6)		(20)		(26)
Amortization of net actuarial loss		252		194		58		60		30		28
Total non-operating expense (benefit)		(22)		(52)		(25)		(10)		8		(1)
Total net periodic benefit cost (benefit)	$	122	$	82	$	48	$	57	$	34	$	24

For the six months ended June 30, 2018, contributions totaling $259 million were made to the Company’s U.S. and international pension plans and $2 million to its postretirement plans. For total year 2018, the Company expects to contribute approximately $300 million to $500 million of cash to its global defined benefit pension and postretirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2018. Future contributions will depend on market conditions, interest rates and other factors. 3M’s annual measurement date for pension and postretirement assets and liabilities is December 31 each year, which is also the date used for the related annual measurement assumptions.

The Company adopted ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. This ASU changed how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Under the new standard, only the service cost component of net periodic benefit cost is included in operating expenses and only the service cost component is eligible for capitalization into assets such as inventory. All other net periodic benefit costs components (such as interest, expected return on plan assets, prior service cost amortization and actuarial gain/loss amortization) are reported outside of operating income. See Note 1 for additional details.

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Derivatives

6 Months Ended

Jun. 30, 2018

Derivatives

Derivatives

NOTE 12.  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 derivatives is included elsewhere as follows:

· Impact on other comprehensive income of nonderivative hedging and derivative instruments is included in Note 7.

· Fair value of derivative instruments is included in Note 13.

· Derivatives and/or hedging instruments associated with the Company’s long-term debt are described in Note 11 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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. 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. 3M may dedesignate 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 or becomes probable of not occurring. 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. The maximum length of time over which 3M hedges its exposure to the variability in future cash flows of the forecasted transactions is 36 months.

Cash Flow Hedging — Interest Rate Contracts: The Company may use forward starting interest rate contracts to hedge exposure to variability in cash flows from interest payments on forecasted debt issuances. The amortization of gains and losses on forward starting interest rate swaps is included in the tables below as part of the gain/(loss) recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income. Additional information regarding previously issued but terminated interest rate contracts, which have related balances within accumulated other comprehensive income being amortized over the underlying life of related debt, can be found in Note 13 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

During the first six months of 2018, the Company entered into forward starting interest rate swaps with a notional amount of $500 million as hedges against interest rate volatility associated with forecasted issuances of fixed rate debt.

The amortization of gains and losses on forward starting interest rate swaps is included in the tables below as part of the gain/(loss) recognized in income on the effective portion of derivatives as a result of reclassification from accumulated other comprehensive income.

As of June 30, 2018, the Company had a balance of $11 million associated with the after-tax net unrealized loss associated with cash flow hedging instruments recorded in accumulated other comprehensive income. This includes a remaining balance of $9 million (after tax loss)  related to the forward starting interest rate swaps, which will be amortized over the respective lives of the debt.  Based on exchange rates as of June 30, 2018, 3M expects to reclassify approximately $20 million, $15 million, and $1 million of the after-tax net unrealized foreign exchange cash flow hedging losses to earnings over the remainder of 2018, over the next 12 months, and after 2019, respectively, and reclassify approximately $10 million of the after-tax net unrealized foreign exchange cash flow hedging gains to earnings in 2019 (with the impact offset by earnings/losses 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.

			Pretax Gain (Loss) Recognized in
	Pretax Gain (Loss)		Income on Effective Portion of			Ineffective Portion of Gain
	Recognized in Other		Derivative as a Result of			(Loss) on Derivative and
	Comprehensive		Reclassification from			Amount Excluded from
	Income on Effective		Accumulated Other			Effectiveness Testing
Three months ended June 30, 2018	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	179	Cost of sales	$	(27)	Cost of sales	$	—
Interest rate swap contracts		3	Interest expense		(1)	Interest expense		—
Total	$	182		$	(28)		$	—

Six months ended June 30, 2018
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	100	Cost of sales	$	(61)	Cost of sales	$	—
Interest rate swap contracts		—	Interest expense		(1)	Interest expense		—
Total	$	100		$	(62)		$	—

Three months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(72)	Cost of sales	$	5	Cost of sales	$	—
Interest rate swap contracts		(2)	Interest expense		—	Interest expense		—
Total	$	(74)		$	5		$	—

Six months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(172)	Cost of sales	$	23	Cost of sales	$	—
Interest rate swap contracts		(3)	Interest expense		—	Interest expense		—
Total	$	(175)		$	23		$	—

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. Additional information regarding designated interest rate swaps can be found in Note 13 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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:

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
Three months ended June 30, 2018	Recognized in Income			Recognized in Income
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(1)	Interest expense	$	1
Total		$	(1)		$	1

Six months ended June 30, 2018
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(12)	Interest expense	$	12
Total		$	(12)		$	12

Three months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	1	Interest expense	$	(1)
Total		$	1		$	(1)

Six months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(4)	Interest expense	$	4
Total		$	(4)		$	4

Net Investment Hedges:

The Company may use non-derivative (foreign currency denominated debt) and derivative (foreign exchange forward contracts) instruments to hedge portions of the Company’s investment in foreign subsidiaries and manage foreign exchange risk. For instruments that are designated and qualify as hedges of net investments in foreign operations and 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. To the extent foreign currency denominated debt is not designated in or is dedesignated from a net investment hedge relationship, changes in value of that portion of foreign currency denominated debt due to exchange rate changes are recorded in earnings through their maturity date.

3M’s use of foreign exchange forward contracts designated in hedges of the Company’s net investment in foreign subsidiaries can vary by time period depending on when foreign currency denominated debt balances designated in such relationships are dedesignated, matured, or are newly issued and designated. Additionally, variation can occur in connection with the extent of the Company’s desired foreign exchange risk coverage.

During the first quarter of 2018, the Company dedesignated 300 million Euros of foreign currency denominated debt from a former net investment hedge relationship.

At June 30, 2018, the total notional amount of foreign exchange forward contracts designated in net investment hedges was approximately 150 million Euros and approximately 248 billion South Korean Won, along with a principal amount of long-term debt instruments designated in net investment hedges totaling 4.1 billion Euros. The maturity dates of these derivative and nonderivative instruments designated in net investment hedges range from 2018 to 2031.

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.

	Pretax Gain (Loss)
	Recognized as
	Cumulative Translation
	within Other		Ineffective Portion of Gain (Loss) on
	Comprehensive Income		Instrument and Amount Excluded
	on Effective Portion of		from Effectiveness Testing
Three months ended June 30, 2018	Instrument		Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	299	Cost of sales	$	—
Foreign currency forward contracts		23	Cost of sales		1
Total	$	322		$	1

Six months ended June 30, 2018	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	171	Cost of sales	$	(2)
Foreign currency forward contracts		17	Cost of sales		—
Total	$	188		$	(2)

Three months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(270)	Cost of sales	$	—
Foreign currency forward contracts		(7)	Cost of sales		3
Total	$	(277)		$	3

Six months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(391)	Cost of sales	$	—
Foreign currency forward contracts		(27)	Cost of sales		5
Total	$	(418)		$	5

Derivatives Not Designated as Hedging Instruments:

Derivatives not designated as hedging instruments include dedesignated foreign currency forward and options 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 exchange forward contracts to offset, in part, the impacts of certain intercompany transactions, foreign currency denominated debt (not otherwise in net investment hedge relationships), and to further mitigate short term currency impacts. In addition, the Company enters into commodity price swaps to offset, in part, fluctuations in costs associated with the use of certain commodities and precious metals. These derivative instruments are not designated in hedging relationships; therefore, fair value gains and losses on these contracts are recorded in earnings. 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:

	Three months ended June 30, 2018			Six months ended June 30, 2018
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	3	Cost of sales	$	—
Foreign currency forward contracts	Interest expense		(114)	Interest expense		(91)
Total		$	(111)		$	(91)

	Three months ended June 30, 2017			Six months ended June 30, 2017
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	6	Cost of sales	$	5
Foreign currency forward contracts	Interest expense		(138)	Interest expense		(96)
Total		$	(132)		$	(91)

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. Notional amounts below are presented at period end foreign exchange rates, except interest rate swaps, which are presented using the contract inception date’s foreign exchange rate. Additional information with respect to the fair value of derivative instruments is included in Note 13.

	Gross		Assets			Liabilities
June 30, 2018	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,054	Other current assets	$	46	Other current liabilities	$	21
Foreign currency forward/option contracts		1,264	Other assets		42	Other liabilities		13
Interest rate swap contracts		1,350	Other current assets		—	Other current liabilities		7
Interest rate swap contracts		1,103	Other assets		20	Other liabilities		10
Total derivatives designated as hedging instruments				$	108		$	51
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	3,834	Other current assets	$	22	Other current liabilities	$	66
Total derivatives not designated as hedging instruments				$	22		$	66
Total derivative instruments				$	130		$	117

	Gross		Assets			Liabilities
December 31, 2017	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,204	Other current assets	$	7	Other current liabilities	$	109
Foreign currency forward/option contracts		1,392	Other assets		20	Other liabilities		56
Interest rate swap contracts		450	Other current assets		—	Other current liabilities		1
Interest rate swap contracts		1,503	Other assets		21	Other liabilities		6
Total derivatives designated as hedging instruments				$	48		$	172
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	4,974	Other current assets	$	30	Other current liabilities	$	25
Total derivatives not designated as hedging instruments				$	30		$	25
Total derivative instruments				$	78		$	197

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 June 30, 2018, 3M has International Swaps and Derivatives Association (ISDA) agreements with 17 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 16 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 collateral had been received or pledged related to these derivative instruments.

Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Assets		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Liabilities		Received		Derivative Assets
Derivatives subject to master netting agreements	$	130	$	59	$	—	$	71
Derivatives not subject to master netting agreements		—						—
Total	$	130					$	71

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	78	$	27	$	—	$	51
Derivatives not subject to master netting agreements		—						—
Total	$	78					$	51

Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Liabilities		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Assets		Pledged		Derivative Liabilities
Derivatives subject to master netting agreements	$	115	$	59	$	—	$	56
Derivatives not subject to master netting agreements		2						2
Total	$	117					$	58

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	197	$	27	$	—	$	170
Derivatives not subject to master netting agreements		—						—
Total	$	197					$	170

Currency Effects

3M estimates that year-on-year foreign currency transaction effects, including hedging impacts, decreased pre-tax income by approximately $27 million and $91 million for the three and six months ended June 30, 2018. These estimates include transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Measurements

Fair Value Measurements

NOTE 13.  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:

Refer to Note 14 in the Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for a qualitative discussion of the assets and liabilities that are measured at fair value on a recurring and nonrecurring basis, a description of the valuation methodologies used by 3M, and categorization within the valuation framework of ASC 820.

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

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	June 30, 2018		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Commercial paper	$	347	$	—	$	347	$	—
Certificates of deposit/time deposits		31		—		31		—
Asset-backed securities:
Automobile loan related		3		—		3		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		110		—		110		—
Interest rate swap contracts		20		—		20		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		100		—		100		—
Interest rate swap contracts		17		—		17		—

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	December 31, 2017		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Corporate debt securities	$	14	$	—	$	14	$	—
Commercial paper		899		—		899		—
Certificates of deposit/time deposits		76		—		76		—
Asset-backed securities:
Automobile loan related		16		—		16		—
Credit card related		68		—		68		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		57		—		57		—
Interest rate swap contracts		21		—		21		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		190		—		190		—
Interest rate 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).

	Three months ended				Six months ended
Marketable securities — certain U.S. municipal securities only	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Beginning balance	$	30	$	20	$	30	$	20
Total gains or losses:
Included in earnings		—		—		—		—
Included in other comprehensive income		—		—		—		—
Purchases and issuances		—		—		—		—
Sales and settlements		—		—		—		—
Transfers in and/or out of level 3		—		—		—		—
Ending balance	$	30	$	20	$	30	$	20
Change in unrealized gains or losses for the period included in earnings for securities held at the end of the reporting period		—		—		—		—

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 12 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

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 and adjustment in carrying value of equity securities for which the measurement alternative of cost less impairment plus or minus observable price changes is used. There were no material long-lived asset impairments or adjustments to equity securities using the measurement alternative for the three and six months ended June 30, 2018 and three months ended June 30, 2017. During the six months ended June 30, 2017, the Company recognized approximately $40 million in long-lived asset impairments related to its Electronics and Energy business segment, with the complete carrying amount of such assets written off and included in operating income results.

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 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, 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:

	June 30, 2018				December 31, 2017
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	11,294	$	11,474	$	12,096	$	12,535

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 certain fixed rate Eurobond securities issued by the Company as hedging instruments of the Company’s net investment in its European subsidiaries. Many of 3M’s fixed-rate bonds were trading at a premium at June 30, 2018 and December 31, 2017 due to lower interest rates and tighter credit spreads compared to issuance levels.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies

Commitments and Contingencies

NOTE 14.  Commitments and Contingencies

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. Additional information about the Company’s process for disclosure and recording of liabilities and insurance receivables related to legal proceedings can be found in Note 15 “Commitments and Contingencies” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017as updated by the Company’s Current Report on Form 8-K dated May 8, 2018.

The following sections first describe the significant legal proceedings in which the Company is involved, and then describe the liabilities and associated insurance receivables the Company has accrued relating to its significant legal proceedings.

Respirator Mask/Asbestos Litigation

As of June 30, 2018, the Company is a named defendant, with multiple co-defendants, in numerous lawsuits in various courts that purport to represent approximately 2,260 individual claimants, compared to approximately 2,230 individual claimants with actions pending at December 31, 2017.

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 it experienced at the peak of filings in 2003. 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 thirteen of the fourteen cases taken to trial, including eleven of the twelve cases tried to verdict (such trials occurred in 1999, 2000, 2001, 2003, 2004, 2007, 2015, and the cases tried in 2016, 2017, and 2018-described below), and an appellate reversal in 2005 of the 2001 jury verdict adverse to the Company. The remaining 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. In August 2016, 3M received a unanimous verdict in its favor from a jury in state court in Kentucky, in 3M’s first respirator trial involving coal mine dust. The estate of the plaintiff alleged that the 3M 8710 respirator is defective and caused his death because it did not protect him from harmful coal mine dust. The jury rejected plaintiff’s claim and returned a verdict finding no liability against 3M. The verdict is final as the plaintiff did not file an appeal. In September 2017, 3M received a unanimous verdict in its favor from a jury in state court in Kentucky in 3M’s second respirator trial involving coal mine dust. The jury ultimately determined that the plaintiff’s claims were barred by the statute of limitations. In November 2017, the court denied the plaintiff’s motion for a new trial. The plaintiff did not file an appeal, thereby ending the litigation. In February 2018, 3M received a verdict in its favor from a jury in state court in California. The plaintiff alleged that the 3M 8710 respirator was defective and caused his mesothelioma because it did not protect him from asbestos fibers. The jury rejected plaintiff’s claim and returned a verdict finding no liability against 3M. In April 2018, a jury in state court in Kentucky found 3M’s 8710 respirators failed to protect two coal miners from coal mine dust and awarded aggregate compensatory damages of approximately $2 million and punitive damages totaling $63 million. Once a judgment has been entered by the trial court, the Company plans to appeal the judgment. The Company believes liability in this case is not probable and estimable. In June 2018, the Company also settled a number of coal mine dust lawsuits for an amount that was not material to the Company.

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 medically unimpaired claimants.

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. The case was inactive from the fourth quarter of 2007 until late 2013, other than a case management conference in March 2011. In November 2013, the State filed a motion to bifurcate the lawsuit into separate liability and damages proceedings. At the hearing on the motion, the court declined to bifurcate the lawsuit. 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 lack of any meaningful discovery responses by the State of West Virginia, the otherwise 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, if any, a jury might allocate to each defendant if the case is ultimately tried.

Respirator Mask/Asbestos Liabilities and Insurance Receivables:

The Company regularly conducts a comprehensive legal review of its respirator mask/asbestos liabilities. The Company reviews recent and historical claims data, including without limitation, (i) the number of pending claims filed against the Company, (ii) the nature and mix of those claims (i.e., 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), (iii) the costs to defend and resolve pending claims, and (iv) trends in filing rates and in costs to defend and resolve claims, (collectively, the “Claims Data”). As part of its comprehensive legal review, the Company regularly provides the Claims Data to a third party with expertise in determining the impact of Claims Data on future filing trends and costs. The third party assists the Company in estimating the costs to defend and resolve pending and future claims. The Company uses these estimates to develop its best estimate of probable liability.

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 key assumptions underlying the Company’s accrual, including, the number of future claims, the nature and mix of those claims, the average cost of defending and resolving claims, and in maintaining trial readiness (ii) trial and appellate outcomes, (iii) the law and procedure applicable to these claims, and (iv) the financial viability of other co-defendants and insurers.

As a result of the Company’s review of its respirator mask/asbestos liabilities and as a result of the cost of resolving claims of persons who claim more serious injuries, including mesothelioma and other malignancies, the Company increased its accruals in the first six months of 2018 for respirator mask/asbestos liabilities by $56 million. In the first six months of 2018, the Company made payments for legal fees and settlements of $33 million related to the respirator mask/asbestos litigation. As of June 30, 2018, the Company had an accrual for respirator mask/asbestos liabilities (excluding Aearo accruals) of $631 million. This accrual represents the Company’s best estimate of probable loss and reflects an estimation period for future claims that may be filed against the Company approaching the year 2050. The Company cannot estimate the amount or upper end of the 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 or the time period in which future claims may be asserted, (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 June 30, 2018, the Company’s receivable for insurance recoveries related to the respirator mask/asbestos litigation was $4 million. The Company continues to seek coverage under the policies of certain insolvent and other insurers. Once those claims for coverage are resolved, the Company will have collected substantially all of its remaining insurance coverage for respirator mask/asbestos claims.

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 June 30, 2018, 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 June 30, 2018, the Company, through its Aearo subsidiary, had accruals of $29 million for product liabilities and defense costs related to current and future Aearo-related asbestos and silica-related claims. This accrual represents the Company’s best estimate of Aearo’s probable loss and reflects an estimation period for future claims that may be filed against the Aearo approaching the year 2050. 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 respective 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 a quarterly fee of $100,000, Cabot will retain responsibility and liability for, and indemnify Aearo against, any product liability claims involving exposure to asbestos, silica, or silica products for respirators sold prior to July 11, 1995. Because of the difficulty in determining how long a particular respirator remains in the stream of commerce after being sold, Aearo and Cabot have applied the agreement to claims arising out of the alleged use of respirators involving exposure to asbestos, silica or silica products 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 quarterly 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.

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 insurance coverage limits, and/or (ix) 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 (CERCLA) 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 section 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, federal (primarily the U.S. Environmental Protection Agency (EPA)), and international agencies of possible environmental and health effects of various perfluorinated compounds, including perfluorooctanyl compounds such as perfluorooctanoate (“PFOA”), perfluorooctane sulfonate (“PFOS”), or other per- and polyfluoroalkyl substances (collectively “PFAS”). 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 the end of 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 continues to control or eliminate the presence of certain PFAS in purchased materials or as byproducts in some of 3M’s fluorochemical manufacturing processes, products, and waste streams.

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. As the database of studies of both PFOA and PFOS has expanded, the EPA has developed human health effects documents summarizing the available data from these studies. In February 2014, the EPA initiated external peer review of its draft human health effects documents for PFOA and PFOS. The peer review panel met in August 2014. In May 2016, the EPA announced lifetime health advisory levels for PFOA and PFOS at 70 parts per trillion (ppt) (superseding the provisional levels established by the EPA in 2009 of 400 ppt for PFOA and 200 ppt for PFOS). Where PFOA and PFOS are found together, EPA recommends that the concentrations be added together, and the lifetime health advisory for PFOA and PFOS combined is also 70 ppt. Lifetime health advisories, while not enforceable, serve as guidance and are benchmarks for determining if concentrations of chemicals in tap water from public utilities are safe for public consumption. In an effort to collect exposure information under the Safe Drinking Water Act, the EPA published on May 2, 2012 a list of unregulated substances, including six PFAS, required to be monitored during the period 2013-2015 by public water system suppliers to determine the extent of their occurrence. Through January 2017, the EPA reported results for 4,920 public water supplies nationwide. Based on the 2016 lifetime health advisory, 13 public water supplies exceed the level for PFOA and 46 exceed the level for PFOS (unchanged from the July 2016 EPA summary). A technical advisory issued by EPA in September 2016 on laboratory analysis of drinking water samples stated that 65 public water supplies had exceeded the combined level for PFOA and PFOS. These results are based on one or more samples collected during the period 2012-2015 and do not necessarily reflect current conditions of these public water supplies. EPA reporting does not identify the sources of the PFOA and PFOS in the public water supplies.

The Company is continuing to make progress in its work, under the supervision of state regulators, to address its historic disposal of PFAS-containing waste associated with manufacturing operations at the Decatur, Alabama, Cottage Grove, Minnesota, and Cordova, Illinois 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 PFAS in the soil at the Company’s manufacturing facility in Decatur, Alabama. Pursuant to a permit issued by ADEM, for approximately twenty years, the Company incorporated its wastewater treatment plant sludge containing PFAS in fields at its Decatur facility. After a review of the available options to address the presence of PFAS 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 plan continues and is expected to be completed in 2018.

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 PFAS 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 PFAS 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 PFAS for which a HBV and/or HRL exists as a result of contamination from these sites; (iii) remediating identified sources of other PFAS 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 and Woodbury sites, and they are in an operational maintenance mode. Remediation will continue at the Cottage Grove site during 2018.

In August 2014, the Illinois EPA approved a request by the Company to establish a groundwater management zone at its manufacturing facility in Cordova, Illinois, which includes ongoing pumping of impacted site groundwater, groundwater monitoring and routine reporting of results.

In May 2017, the MDH issued new HBVs for PFOS and PFOA. The new HBVs are 35 ppt for PFOA and 27 ppt for PFOS. In connection with its announcement the MDH stated that “Drinking water with PFOA and PFOS, even at the levels above the updated values, does not represent an immediate health risk. These values are designed to reduce long-term health risks across the population and are based on multiple safety factors to protect the most vulnerable citizens, which makes them overprotective for most of the residents in our state.” In December 2017, the MDH issued a new HBV for perfluorobutane sulfonate (PFBS) of 2 ppb. In February 2018, the MDH published reports finding no unusual rates of certain cancers or adverse birth outcomes (low birth rates or premature births) among residents of Washington and Dakota counties in Minnesota.

EPA announced a four-step action plan in May 2018 regarding PFAS, which includes evaluating the need to set Safe Drinking Water Act maximum contaminant levels (MCLs) for PFOA and PFOS and beginning the steps necessary to designate PFOA and PFOS as “hazardous substances” under CERCLA.

The U.S.Agency for Toxic Substances and Disease Registry (ATSDR) within the Department of Health and Human Services released a draft Toxicological Profile for PFAS for public review and comment in June 2018. In the draft report, ATSDR proposed draft Minimal Risk Levels (MRLs) for PFOS, PFOA and several other PFAS. An MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse non-cancer health effects over a specified duration of exposure.” MRLs are not regulatory values. ATSDR recently extended the period for comment to 60 days or August 20, 2018.

In several states, the state legislature or the state environmental agency have been considering actions that would evaluate cleanup standards, groundwater values or drinking water values for PFOS, PFOA and other PFAS. States considering such actions include Michigan, New York, New Jersey, New Hampshire, Wisconsin, and Pennsylvania.

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.

Litigation Related to Historical PFAS Manufacturing Operations in Alabama

As previously reported, a former employee filed a purported class action lawsuit in 2002 in the Circuit Court of Morgan County, Alabama (the “St. John case”), 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 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. In June 2015, the plaintiffs filed an amended complaint adding additional defendants, including BFI Waste Management Systems of Alabama, LLC; BFI Waste Management of North America, LLC; the City of Decatur, Alabama; Morgan County, Alabama; Municipal Utilities Board of Decatur; and Morgan County, Alabama, d/b/a Decatur Utilities.

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 (the “Chandler case”) – granted the Company’s motion to abate the case, effectively putting the case on hold pending the resolution of class certification issues in the St. John case. 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 (the “Stover case”) 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 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 St. John case.

In October 2015, West Morgan-East Lawrence Water & Sewer Authority (Water Authority) filed an individual complaint against 3M Company, Dyneon, L.L.C, and Daikin America, Inc., in the U.S. District Court for the Northern District of Alabama. The complaint also includes representative plaintiffs who brought the complaint on behalf of themselves, and a class of all owners and possessors of property who use water provided by the Water Authority and five local water works to which the Water Authority supplies water (collectively, the “Water Utilities”). The complaint seeks compensatory and punitive damages and injunctive relief based on allegations that the defendants’ chemicals, including PFOA and PFOS from their manufacturing processes in Decatur, have contaminated the water in the Tennessee River at the water intake, and that the chemicals cannot be removed by the water treatment processes utilized by the Water Authority. In September 2016, the court granted 3M’s motion to dismiss plaintiffs’ trespass claims with prejudice, negligence claims for personal injuries, and private nuisance claims, and denied the motion to dismiss the plaintiffs’ negligence claims for property damage, public nuisance, abatement of nuisance, battery and wantonness.

In June 2016, the Tennessee Riverkeeper, Inc. (Riverkeeper), a non-profit corporation, filed a lawsuit in the U.S. District Court for the Northern District of Alabama against 3M; BFI Waste Systems of Alabama; the City of Decatur, Alabama; and the Municipal Utilities Board of Decatur, Morgan County, Alabama. The complaint alleges that the defendants violated the Resource Conservation and Recovery Act in connection with the disposal of certain PFAS through their ownership and operation of their respective sites. The complaint further alleges such practices may present an imminent and substantial endangerment to health and/or the environment and that Riverkeeper has suffered and will continue to suffer irreparable harm caused by defendants’ failure to abate the endangerment unless the court grants the requested relief, including declaratory and injunctive relief.

In August 2016, a group of over 200 plaintiffs filed a class action against West Morgan-East Lawrence Water and Sewer Authority (Water Authority), 3M, Dyneon, Daikin, BFI, and the City of Decatur in state court in Lawrence County, Alabama. Plaintiffs are residents of Lawrence, Morgan and other counties who are or have been customers of the Water Authority. They contend defendants have released PFAS that contaminate the Tennessee River and, in turn, their drinking water, causing damage to their health and properties. In January 2017, the court in the St. John case, discussed above, stayed this litigation pending resolution of the St. John case.

In September 2016, the Water Works and Sewer Board of the City of Gadsden, Alabama filed a lawsuit in the Circuit Court of Etowah County Alabama against 3M and various carpet manufacturers. The complaint alleges that PFAS from the defendants’ facilities contaminated the Coosa River as its raw water source for drinking water and seeks unstated damages for the installation and operation of a filtration system, expenses to monitor PFAS levels, and lost profits and sales.

In January 2017, several hundred plaintiffs sued 3M, its subsidiary Dyneon, and Daikin America in Lawrence and Morgan Counties, Alabama. The plaintiffs are owners of property, residents, and holders of property interests who receive their water from the West Morgan-East Lawrence Water and Sewer Authority (Water Authority). They assert common law claims for negligence, nuisance, trespass, wantonness, and battery, and they seek injunctive relief and punitive damages. The plaintiffs contend that the defendants own and operate manufacturing and disposal facilities in Decatur that have released and continue to release PFOA, PFOS and related chemicals into the groundwater and surface water of their sites, resulting in discharge into the Tennessee River. The plaintiffs also contend that the defendants have discharged into Bakers Creek and the Decatur Utilities Dry Creek Wastewater Treatment Plant, which, in turn, discharges wastewater containing these chemicals into the Tennessee River. The plaintiffs contend that, as a result the alleged discharges, the water supplied by the Water Authority to the plaintiffs was, and is, contaminated with PFOA, PFOS, and related chemicals at a level dangerous to humans.

In May 2017, the Water Works and Sewer Board of the Town of Centre, Alabama filed a lawsuit in the Circuit Court of Cherokee County Alabama against 3M, DuPont, and various carpet and textile manufacturers. The complaint alleges that PFAS from the defendants’ facilities contaminated the town’s raw water source for drinking water and seeks unstated damages for the installation and operation of a filtration system, expenses to monitor PFAS levels, lost profits and sales, and injunctive relief.

In November 2017, a purported class action was filed against 3M, its subsidiary Dyneon, Daikin America, and the West Morgan-East Lawrence Water and Sewer Authority (Water Authority) in the U.S. District Court for the Northern District of Alabama. The plaintiffs are residents of Lawrence and Morgan County, Alabama who receive their water from the Water Authority. They assert various common law claims, including negligence, nuisance, wantonness, and fraudulent concealment, and they seek injunctive relief, attorneys’ fees, compensatory and punitive damages for their alleged personal injuries. The plaintiffs contend that the defendants own and operate manufacturing and disposal facilities in Decatur that have released and continue to release PFOA, PFOS and related chemicals into the groundwater and surface water of their sites, resulting in discharge into the Tennessee River. The plaintiffs also contend that the defendants have discharged chemicals into the Decatur Utilities Dry Creek Wastewater Treatment Plant, which, in turn, discharged wastewater containing these chemicals into the Tennessee River. The plaintiffs contend that, as a result of the alleged discharges, the water supplied by the Water Authority to the plaintiffs was, and is, contaminated with PFOA, PFOS, and related chemicals at a level dangerous to humans.

In January 2018, certain property owners in Trinity, Alabama filed a lawsuit against 3M, Dyneon, and three unnamed defendants in the U.S. District Court for the Northern District of Alabama. The plaintiffs assert claims for negligence, strict liability, trespass, nuisance, wanton and reckless conduct, and citizen suit claims for violation of the Resource Conservation and Recovery Act. They allege these claims arise from the defendants’ contamination of their property by disposal of PFAS in a landfill located on their property. The plaintiffs seek compensatory and punitive damages and a court order directing the defendants to remediate all PFAS contamination on their property.

Litigation Related to Historical PFAS Manufacturing Operations in Minnesota

In July 2016, the City of Lake Elmo filed a lawsuit in the U.S. District Court for the District of Minnesota against 3M alleging that the City suffered damages from drinking water supplies contaminated with PFAS, including costs to construct alternative sources of drinking water. Trial is scheduled to begin in September 2019.

State Attorneys General Litigation related to PFAS

In December 2010, the State of Minnesota, by its Attorney General, 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 PFAS in the groundwater, surface water, fish or other aquatic life, and sediments (the “NRD Lawsuit”). The State also sought 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 PFAS into the environment, and that 3M is responsible for compensation for future loss or destruction of fish, aquatic life, and other damages under the MWPCA. In September 2017, the State’s damages expert submitted a report that contended the State incurred $5 billion in damages. In November 2017, the State of Minnesota filed a motion for leave to amend its complaint to seek punitive damages from 3M, and 3M filed a motion for summary judgment contending, among other things, that the State’s claims were barred by the applicable statute of limitations. In December 2017, the court urged the parties to attempt to resolve the litigation before trial, and in January 2018, the court appointed a mediator to facilitate that process. In February 2018, 3M and the State of Minnesota reached a resolution of the NRD Lawsuit. Under the terms of the settlement, 3M agreed to provide an $850 million grant to the State for a special “3M Water Quality and Sustainability Fund.” This Fund will enable projects that support water sustainability in the Twin Cities East Metro region, such as continued delivery of water to residents and enhancing groundwater recharge to support sustainable growth. The projects will also result in habitat and recreation improvements, such as fishing piers, trails, and open space preservation. 3M recorded a pre-tax charge of $897 million, inclusive of legal fees and other related obligations, in the first quarter of 2018 associated with the resolution of this matter.

In June 2018, the State of New York, by its Attorney General, filed a lawsuit in Albany Country Supreme Court against 3M, Tyco Fire Products LP, Chemguard, Inc., Buckeye Fire Equipment Co., National Foam, Inc., and Kidde-Fenwal, Inc., seeking to recover (1) the costs incurred in responding to the contamination caused by Aqueous Film Forming Foam (AFFF) manufactured by 3M and others; (2) damages for injury to, destruction of, and loss of the State’s natural resources and related recreational series; and (3) property damage.

In July 2018, the governor of Michigan requested that the Michigan Attorney General file a lawsuit against 3M and others related to PFAS in a public letter. The Michigan Attorney General has not yet determined whether he will do so.

Aqueous Film Forming Foam (AFFF) Environmental Litigation

3M manufactured and marketed AFFF for use in firefighting at airports and military bases from approximately 1963 to 2000. As of June 30, 2018, 70 putative class action and other lawsuits have been filed against 3M and other defendants in various state and federal courts in Colorado, Delaware, Florida, Massachusetts, New York, Pennsylvania, and Washington where current or former airports or military bases are or were located. In these cases, plaintiffs typically allege that certain PFAS used in AFFF contaminated the soil and groundwater where AFFF was used and seek damages for loss of use and enjoyment of properties, diminished property values, investigation costs, remediation costs, and in some cases, funds for medical monitoring. Several companies have been sued along with 3M, including Ansul Co. (acquired by Tyco, Inc.), Angus Fire, Buckeye Fire Protection Co., Chemguard, National Foam, Inc., and United Technologies Corp.

Other PFAS-related Environmental Litigation

3M manufactured and marketed certain products containing PFAS for use by customers in their manufacturing process. As of June 30, 2018, the following four cases have been filed against 3M, another manufacturer, and their customers in connection with the use and disposal of these products.

In September 2017, three complaints were filed in the U.S. District Court for the Northern District of New York against 3M, Saint-Gobain Performance Plastics Corp. (“Saint-Gobain”), Honeywell International Inc. (“Honeywell”) and E.I. DuPont De Nemours and Company. Plaintiffs allege that 3M manufactured and sold PFOA that was used for manufacturing purposes at Saint-Gobain’s and Honeywell’s facilities located in the Village of Hoosick Falls and the Town of Hoosick. Plaintiffs claim that the drinking water around Hoosick Falls became contaminated with unsafe levels of PFOA due to the activities of the defendants, and allege that they suffered bodily injury due to the ingestion and inhalation of PFOA. Plaintiffs seek unstated compensatory, consequential, and punitive damages, as well as attorneys’ fees and costs.

In December 2017, eight plaintiffs filed a class action against 3M, Wolverine World Wide and Waste Management, Inc., alleging negligence, trespass, intentional and negligent infliction of emotional distress, battery, products liability, public and private nuisance, fraudulent concealment, and unjust enrichment. Each count was filed against each defendant. The action arises from Wolverine’s allegedly improper disposal of materials and wastes related to their shoe manufacturing operations. Plaintiffs allege Wolverine used 3M Scotchgard in its manufacturing process and that chemicals from 3M’s product have contaminated the environment after being disposed of near drinking water sources.

For environmental litigation matters described above 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 any 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.

Environmental Liabilities and Insurance Receivables

As of June 30, 2018, the Company had recorded liabilities of $30 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 $8 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 June 30, 2018, the Company had recorded liabilities of $59 million for “other environmental liabilities” based upon an evaluation of currently available facts to implement the Settlement Agreement and Consent Order with the MPCA (including the best estimate of the probable liability under the settlement of the NRD Lawsuit for interim treatment of municipal and private wells), 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.

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.

Other Matters

Department of Labor Investigation

The U.S. Department of Labor (DOL) notified 3M in April 2015 that it had commenced an investigation of 3M’s pension plan pursuant to the federal Employee Retirement Income Security Act of 1974, as amended (ERISA). The DOL has stated its investigation relates to certain private equity investments, plan expenses, securities lending, and distributions of plan benefits. In response to certain DOL requests, 3M produced documents and made employees available for interviews. In December 2016, the DOL issued certain subpoenas to 3M and 3M Investment Management Corp. relating to this investigation. 3M has produced additional responsive documents and is cooperating with the DOL in its investigation. In June 2018, the DOL issued a letter indicating that it did not intend to take further action.

Product Liability Litigation

As of June 30, 2018, the Company is a named defendant in lawsuits involving approximately 4,626 plaintiffs (compared to approximately 4,270 plaintiffs at December 31, 2017), most of which are pending in federal court in Minnesota, in which the plaintiffs claim they underwent various joint arthroplasty, cardiovascular, and other surgeries and later developed surgical site infections due to the use of the Bair Hugger™ patient warming system (the Bair Hugger™ product line was acquired by 3M as part of the 2010 acquisition of Arizant, Inc., a leading manufacturer of patient warming solutions designed to prevent hypothermia and maintain normal body temperature in surgical settings). The complaints seek damages and other relief based on theories of strict liability, negligence, breach of express and implied warranties, failure to warn, design and manufacturing defect, fraudulent and/or negligent misrepresentation/concealment, unjust enrichment, and violations of various state consumer fraud, deceptive or unlawful trade practices and/or false advertising acts. One case, from the U.S. District Court for the Western District of Tennessee is a putative nationwide class action. The U.S. Judicial Panel on Multidistrict Litigation (MDL) granted the plaintiffs’ motion to transfer and consolidate all cases pending in federal courts to the U.S. District Court for the District of Minnesota to be managed in a multi-district proceeding during the pre-trial phase of the litigation. In 2017, the U.S. District Court and the Minnesota state courts denied the plaintiffs’ motions to amend their complaints to add claims for punitive damages. At a joint hearing before the U.S. District Court and the Minnesota State court, on the parties’ motion to exclude each other’s experts, and 3M’s motion for summary judgment with respect to general causation, the federal court did not exclude the plaintiffs’ experts and denied 3M’s motion for summary judgment on general causation. In January 2018, the state court, in hearing the same arguments, excluded plaintiffs’ experts and granted 3M’s motion for summary judgment on general causation, dismissing all 61 cases pending before the state court in Minnesota. Plaintiffs have appealed that ruling and the state court’s punitive damages ruling. In April 2018, the federal court partially granted 3M’s motion for summary judgment in the first bellwether case, leaving for trial a claim for strict liability based upon design defect. The court dismissed the plaintiff’s claims for negligence, failure to warn, and common law and statutory fraud. In the trial of the first bellwether case in May 2018, the jury returned a unanimous verdict in 3M’s favor finding that the Bair Hugger™ patient warming system was not defective and was not the cause of the plaintiff’s injury.

In June 2016, the Company was served with a putative class action filed in the Ontario Superior Court of Justice for all Canadian residents who underwent various joint arthroplasty, cardiovascular, and other surgeries and later developed surgical site infections due to the use of the Bair Hugger™ patient warming system. The representative plaintiff seeks relief (including punitive damages) under Canadian law based on theories similar to those asserted in the MDL. No liability has been recorded for the Bair Hugger™ litigation because the Company believes that any such liability is not probable and estimable at this time.

In September 2011, 3M Oral Care launched Lava Ultimate CAD/CAM dental restorative material. The product was originally indicated for inlay, onlay, veneer, and crown applications. In June 2015, 3M Oral Care voluntarily removed crown applications from the product’s instructions for use, following reports from dentists of patients’ crowns debonding, requiring additional treatment. The product remains on the market for other applications. 3M communicated with the U.S. Food and Drug Administration, as well as regulators outside the United States. 3M also informed customers and distributors of its action, offered to accept return of unused materials and provide refunds. In May 2018, 3M reached a preliminary settlement for an amount that did not have a material impact to the Company of the lawsuit pending in the U.S. District Court for the District of Minnesota that sought certification of a class of dentists in the United States and its territories. The settlement is subject to the court’s approval and certification of the settlement class, with a right of class members to opt-out of the settlement and bring individual claims against the Company.

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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Stock-Based Compensation

6 Months Ended

Jun. 30, 2018

Stock-Based Compensation

Stock-Based Compensation

NOTE 15.  Stock-Based Compensation

The 3M 2016 Long-Term Incentive Plan provides for the issuance or delivery of up to 123,965,000 shares of 3M common stock pursuant to awards granted under the plan. Awards 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. The remaining shares available for grant under the LTIP Program are 26.1 million as of June 30, 2018.

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. 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 ten years of service. This retiree-eligible population represents 38 percent of the annual grant stock-based compensation award expense dollars; therefore, higher stock-based compensation expense is recognized in the first quarter.

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 three and six months ended June 30, 2018 and 2017.

Stock-Based Compensation Expense

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Cost of sales	$	9	$	9	$	32	$	32
Selling, general and administrative expenses		33		43		142		141
Research, development and related expenses		7		7		34		33
Stock-based compensation expenses	$	49	$	59	$	208	$	206
Income tax benefits	$	(19)	$	(74)	$	(117)	$	(222)
Stock-based compensation expenses (benefits), net of tax	$	30	$	(15)	$	91	$	(16)

Stock Option Program

The following table summarizes stock option activity during the six months ended June 30, 2018:

				Weighted
				Average
		Weighted		Remaining	Aggregate
	Number of	Average		Contractual	Intrinsic Value
(Options in thousands)	Options	Exercise Price		Life (months)	(millions)
Under option —
January 1	34,965	$	125.73
Granted:
Annual	3,174		233.62
Exercised	(2,378)		89.67
Forfeited	(73)		186.24
June 30	35,688	$	137.60	71	$	2,226
Options exercisable
June 30	27,222	$	120.84	60	$	2,066

Stock options vest over a period from one year to three years with the expiration date at 10 years from date of grant. As of June 30, 2018, there was $102 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 23 months. The total intrinsic values of stock options exercised were $345 million and $465 million during June 30, 2018 and 2017, respectively. Cash received from options exercised was $212 million and $416 million for the six months ended June 30, 2018 and 2017, respectively. The Company’s actual tax benefits realized for the tax deductions related to the exercise of employee stock options were $73 million and $158 million for the six months ended June 30, 2018 and 2017, respectively.

For the primary 2018 annual stock option grant, 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
	2018
Exercise price	$	233.63
Risk-free interest rate		2.7	%
Dividend yield		2.4	%
Expected volatility		21.0	%
Expected life (months)		78
Black-Scholes fair value	$	41.59

Expected volatility is a statistical measure of the amount by which a stock price is expected to fluctuate during a period. For the 2018 annual grant date, the Company estimated the expected volatility based upon the following three volatilities of 3M stock: the median of the term of the expected life rolling volatility; the median of the most recent term of the expected life volatility; and the implied volatility on the grant date. The expected term assumption is based on the weighted average of historical grants.

Restricted Stock and Restricted Stock Units

The following table summarizes restricted stock and restricted stock unit activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Nonvested balance —
As of January 1	1,994	$	162.60
Granted
Annual	467		233.61
Other	3		209.26
Vested	(632)		164.37
Forfeited	(22)		177.93
As of June 30	1,810	$	180.22

As of June 30, 2018, there was $110 million of compensation expense that has yet to be recognized related to non-vested restricted stock units and restricted stock. This expense is expected to be recognized over the remaining weighted-average vesting period of 24 months. The intrinsic value of restricted stock units and restricted stock that vested during the six months ended June 30, 2018 and 2017 was $154 million and $134 million, respectively. The Company’s actual tax benefits realized for the tax deductions related to the vesting of restricted stock units and restricted stock was $29 million and $44 million for the six months ended June 30, 2018 and 2017, respectively.

Restricted stock units granted generally vest three years following the grant date assuming continued employment. 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. 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

Instead of restricted stock units, the Company makes annual grants of performance shares to members of its executive management. The 2018 performance criteria for these performance shares (organic volume growth, return on invested capital, free cash flow conversion, and earning per share growth) were selected because the Company believes that they are important drivers of long-term stockholder value. 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. When granted, these performance shares are awarded at 100% of the estimated number of shares at the end of the three-year performance period and are reflected under “Granted” in the table below. 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 2018 performance share grant accrues dividends, therefore the grant date fair value is equal to the closing stock price on the date of grant. Since the rights to dividends are forfeitable, there is no impact on basic earnings per share calculations. Weighted average performance shares whose performance period is complete are included in computation of diluted earnings per share.

The following table summarizes performance share activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Undistributed balance —
As of January 1	686	$	171.90
Granted	156		231.34
Distributed	(206)		159.82
Performance change	2		249.07
Forfeited	(11)		194.69
As of June 30	627	$	190.52

As of June 30, 2018, there was $43 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. The total fair values of performance shares that were distributed were $48 million and $55 million for the six months ended June 30, 2018 and 2017, respectively. The Company’s actual tax benefits realized for the tax deductions related to the distribution of performance shares were $11 million and $15 million for the six months ended June 30, 2018 and 2017, respectively.

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Business Segments

6 Months Ended

Jun. 30, 2018

Business Segments

Business Segments

NOTE 16.  Business Segments

3M’s businesses are organized, managed and internally grouped into segments based on differences in markets, products, technologies and services. 3M manages its operations in five business segments: Industrial; Safety and Graphics; Health Care; Electronics and Energy; 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. 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, along with non-service cost components of pension and postretirement net periodic benefit costs.

As part of 3M’s continuing effort to improve the alignment of its businesses around markets and customers, the Company made the following changes, effective in the first quarter of 2018, and other revisions impacting business segment reporting:

Consolidation of customer account activity within international countries – expanding dual credit reporting

· The Company consolidated its customer account activity in each country into centralized sales districts for certain countries that make up approximately 70 percent of 3M’s 2017 international net sales. Expansion of these initiatives, which previously had been deployed only in the U.S., reduces the complexity for customers when interacting with multiple 3M businesses. 3M business segment reporting measures include dual credit to business segments for certain sales and related operating income. This dual credit is based on which business segment provides customer account activity with respect to a particular product sold in a specific country. The expansion of alignment of customer accounts within additional countries increased the attribution of dual credit across 3M’s business segments. Additionally, certain sales and operating income results for electronic bonding product lines that were previously equally divided between the Electronics and Energy business segment and the Industrial business segment are now reported similarly to dual credit.

Centralization of manufacturing and supply technology platforms

· Certain shared film manufacturing and supply technology platform resources formerly reflected within the Electronics and Energy business segment were combined with other shared and centrally managed material resource centers of expertise within Corporate and Unallocated.

In addition, as discussed in Note 1, 3M adopted ASU N0. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. As a result, operating income for 3M’s business segments has been revised to reflect non-service cost components of pension and postretirement net periodic benefit costs within other expense (income), net.

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

Business Segment Information

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Net Sales
Industrial	$	3,148	$	2,946	$	6,292	$	5,882
Safety and Graphics		1,815		1,569		3,598		3,119
Health Care		1,520		1,449		3,056		2,884
Electronics and Energy		1,337		1,290		2,687		2,581
Consumer		1,223		1,169		2,350		2,242
Corporate and Unallocated		12		2		12		3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495
Operating Income
Industrial	$	724	$	568	$	1,443	$	1,238
Safety and Graphics		480		851		963		1,250
Health Care		435		408		895		837
Electronics and Energy		865		325		1,202		581
Consumer		261		198		479		421
Corporate and Unallocated		(206)		(51)		(1,252)		(144)
Elimination of Dual Credit		(158)		(146)		(322)		(288)
Total Company	$	2,401	$	2,153	$	3,408	$	3,895

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. Corporate and Unallocated also includes sales, costs, and income from contract manufacturing, transition services and other arrangements with the acquirer of substantially all of the Communication Markets Division following its divestiture in June 2018. 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 sales and related operating income. Management evaluates each of its five business segments based on net sales and operating income performance, including dual credit reporting to further incentivize sales growth. As a result, 3M reflects additional (“dual”) credit to another business segment when the customer account activity (“sales district”) with respect to the particular product sold to the external customer is provided by a different business segment. This additional dual credit is largely reflected at the division level. For example, certain respirators are primarily sold by the Personal Safety Division within the Safety and Graphics business segment; however, a sales district within the Industrial business segment provides the contact for sales of the product to particular customers. In this example, the non-primary selling segment (Industrial) would also receive credit for the associated net sales initiated through its sales district 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 in total are unchanged.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies

Basis of Presentation

Basis of Presentation

The interim consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for a fair statement of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. These adjustments consist of normal, recurring items. The results of operations for any interim period are not necessarily indicative of results for the full year. The interim consolidated financial statements and notes are presented as permitted by the requirements for Quarterly Reports on Form 10-Q. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s consolidated financial statements and notes included in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K).

As described in the “New Accounting Pronouncements” section, the Company adopted Accounting Standards Update (ASU) No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, effective January 1, 2018 on a retrospective basis. This ASU changed how 3M presents net periodic benefit cost within its consolidated statement of income, as reflected in the table that follows. The financial information presented herein reflects these impacts for all periods presented.

Three months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	7,810	$	7,810	$	—
Operating expenses
Cost of sales		4,007		4,020		13
Selling, general and administrative expenses		1,607		1,620		13
Research, development and related expenses		473		478		5
Gain on sale of businesses		(461)		(461)		—
Total operating expenses		5,626		5,657		31
Operating income	$	2,184	$	2,153	$	(31)
Other expense (income), net	$	42	$	11	$	(31)
Income before income taxes	$	2,142	$	2,142	$	—

Six months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	15,495	$	15,495	$	—
Operating expenses
Cost of sales		7,876		7,902		26
Selling, general and administrative expenses		3,207		3,234		27
Research, development and related expenses		944		954		10
Gain on sale of businesses		(490)		(490)		—
Total operating expenses		11,537		11,600		63
Operating income	$	3,958	$	3,895	$	(63)
Other expense (income), net	$	79	$	16	$	(63)
Income before income taxes	$	3,879	$	3,879	$	—

In addition, as described in Note 16, effective in the first quarter of 2018, the Company changed its business segment reporting in its continuing effort to improve the alignment of businesses around markets and customers. These changes included the consolidation of customer account activity within international countries (expanding dual credit reporting) and the centralization of manufacturing and supply chain technology platforms. Segment information presented herein reflects the impact of these changes for all periods presented.

The Company updated its financial information and disclosures in its Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) to reflect the retrospective application of ASU No. 2017-07 and the preceding business reporting changes.

Changes to Significant Accounting Policies

Changes to Significant Accounting Policies

The following accounting policies have been updated since the Company’s 2017 Annual Report on Form 10-K (which was updated by 3M’s Current Report on Form 8-K dated May 8, 2018 in regards to the adoption of ASU 2017-07 and the business segment reporting changes discussed above).

Revenue (sales) recognition: As described in the “New Accounting Pronouncements” section,  3M adopted ASU No. 2014-09, Revenue from Contracts with Customers, and other related ASUs on January 1, 2018 using the modified retrospective transition approach. The Company’s accounting policy with respect to revenue recognition and additional disclosure relative to this ASU are included in Note 2.

Investments: As described in the “New Accounting Pronouncements” section, 3M adopted ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities,  effective January 1, 2018. As a result, all equity securities that do not result in consolidation and are not accounted for under the equity method are measured at fair value with changes therein reflected in net income. 3M utilizes the measurement alternative for equity investments that do not have readily determinable fair values and measures these investments at cost less impairment plus or minus observable price changes in orderly transactions. Further, the change in balance of these securities for the three and six months ended June 30, 2018 was not considered material for additional disclosure.

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 month-end exchange rates of the period reported. Income and expense items are translated at month-end exchange rates of each applicable month. Cumulative translation adjustments are recorded as a component of accumulated other comprehensive income (loss) in shareholders’ equity.

3M has a subsidiary in Venezuela, the financial statements of which are remeasured as if its functional currency were that of its parent because Venezuela’s economic environment is considered highly inflationary. The operating income of this subsidiary is immaterial as a percent of 3M’s consolidated operating income for 2017. The Venezuelan government sets official rates of exchange and conditions precedent to purchase foreign currency at these rates with local currency. The government has also operated various expanded secondary currency exchange mechanisms that have been eliminated and replaced from time to time. Such rates and conditions have been and continue to be subject to change. For the periods presented, the financial statements of 3M’s Venezuelan subsidiary were remeasured utilizing the rate associated with the secondary auction mechanism, Tipo de Cambio Complementario (DICOM), or its predecessor. During the same periods, the Venezuelan government’s official exchange was Tipo de Cambio Protegido (DIPRO), or its predecessor, until its discontinuance in the first quarter of 2018.

Note 1 in 3M’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) provides additional information the Company considers in determining the exchange rate used relative to its Venezuelan subsidiary as well as factors which could lead to its deconsolidation. The Company continues to monitor these circumstances. Changes in applicable exchange rates or exchange mechanisms may continue in the future. These changes could impact the rate of exchange applicable to remeasure the Company’s net monetary assets (liabilities) denominated in Venezuelan Bolivars (VEF). As of June 30, 2018, the Company had a balance of net monetary assets denominated in VEF of less than 860 billion VEF and the DIPRO exchange rate was approximately 96,000 VEF per U.S. dollar. A need to deconsolidate the Company’s Venezuelan subsidiary’s operations may result from a lack of exchangeability of VEF-denominated cash coupled with an acute degradation in the ability to make key operational decisions due to government regulations in Venezuela. Based upon a review of factors as of June 30, 2018, the Company continues to consolidate its Venezuelan subsidiary. As of June 30, 2018, the balance of accumulated other comprehensive loss associated with this subsidiary was approximately $145 million, and the amount of intercompany receivables due from this subsidiary and its equity balance were not significant.

3M has subsidiaries in Argentina, the operating income of which is less than one half of one percent of 3M’s consolidated operating income for 2017. Based on various indices, Argentina’s cumulative three-year inflation rate exceeded 100 percent in the second quarter of 2018, thus being considered highly inflationary. As a result, the financial statements of the Argentine subsidiaries will be remeasured as if its functional currency were that of its parent, starting in the third quarter of 2018. As of June 30, 2018, the Company had a balance of net monetary assets denominated in Argentine pesos (ARS) of less than 230 million ARS and the exchange rate was approximately 28 ARS per U.S. dollar.

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 a result of the dilution associated with the Company’s stock-based compensation plans. Certain options outstanding under these stock-based compensation plans 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 (3.5 million average options for the three months ended June 30, 2018;  2.7 million average options for the six months ended June 30, 2018; insignificant for the three months ended June 30, 2017; 1.6 million average options for the six months ended June 30, 2017). The computations for basic and diluted earnings per share follow:

Earnings Per Share Computations

	Three months ended				Six months ended
	June 30,				June 30,
(Amounts in millions, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income attributable to 3M	$	1,857	$	1,583	$	2,459	$	2,906
Denominator:
Denominator for weighted average 3M common shares outstanding – basic		591.4		598.1		593.8		598.1
Dilution associated with the Company’s stock-based compensation plans		12.8		14.7		14.7		14.3
Denominator for weighted average 3M common shares outstanding – diluted		604.2		612.8		608.5		612.4
Earnings per share attributable to 3M common shareholders – basic	$	3.14	$	2.65	$	4.14	$	4.86
Earnings per share attributable to 3M common shareholders – diluted	$	3.07	$	2.58	$	4.04	$	4.74

New Accounting Pronouncements

New Accounting Pronouncements

See the Company’s Current Report on Form 8-K dated May 8, 2018 (which updated 3M’s 2017 Annual Report on Form 10-K) for a more detailed discussion of the standards in the tables that follow, except for those pronouncements issued subsequent to the most recent Form 10-K filing date for which separate, more detailed discussion is provided below.

Standards Adopted During the Current Fiscal Year
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2014-09, Revenue from Contracts with Customers (as amended by ASU Nos. 2015-14, 2016-08, 2016-10, 2016-12, and 2016-20) and related ASU No. 2017-10, Determining the Customer of the Operation Services	Provides a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most previous revenue recognition guidance, including industry-specific guidance. Core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Requires disclosures about the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Specifies the accounting for some costs to obtain or fulfill a contract with a customer.	January 1, 2018	See Note 2 for detailed discussion and disclosures. Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was increased by less than $2 million.
ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	Requires investments in equity securities in an entity that do not result in consolidation and are not accounted for under the equity method to be measured at fair value with changes therein reflected in net income. Simplifies the impairment assessment and allows for a fair value measurement alternative for equity investments without a readily determinable fair value. Eliminates the previous cost method of accounting for certain equity securities that did not have readily determinable fair values.	January 1, 2018	Measurement alternative adopted prospectively. See the preceding “Changes to Significant Accounting Policies” section for impact.
ASU No. 2016-16, Intra-Entity Transfers of Assets Other Than Inventory	Exempts income tax accounting that requires companies to defer the income tax effects of certain intercompany transactions only for intercompany inventory transactions. The exception no longer applies to intercompany sales and transfers of other assets (e.g., intangible assets).	January 1, 2018	Adopted using a modified retrospective approach. January 1, 2018 balance of retained earnings was decreased by less than $2 million.
ASU No. 2017-01, Clarifying the Definition of a Business	Narrows the previous definition of a business and provides a framework for evaluating whether a transaction should be accounted for as an acquisition (or disposal) of assets or a business.	January 1, 2018	Adopted prospectively with no immediate impact. Fewer sets of transferred assets and activities are expected to be considered businesses.
ASU No. 2017-05, Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets	Largely impacts the sale of nonfinancial assets (such as real estate and intellectual property) that do not constitute a business, when the purchaser is not a customer. Seller applies certain recognition and measurement principles of ASU No. 2014-09, Revenue from Contracts with Customers, even though the purchaser is not a customer.	January 1, 2018	Adopted coincident with the adoption of ASU No. 2014-09 with no material impact.

Standards Adopted During the Current Fiscal Year (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	Changes previous classification of net periodic defined benefit pension and postretirement benefit costs within operating expenses. Requires that only the service cost component of net periodic benefit cost be included in operating expenses and that only the service cost component is eligible for capitalization into assets such as inventory. Specifies that other net periodic benefit costs components (such as interest, expected return on plan assets, prior service cost amortization and actuarial gain/loss amortization) would be reported outside of operating income.	January 1, 2018	Adopted on a retrospective basis. No impact on previously reported income before income taxes and net income attributable to 3M. However, non-service cost components of net periodic benefit costs in prior periods have been reclassified from operating expenses and are now reported outside of operating income within other expense (income), net. See the “Basis of Presentation” section above for impact of this ASU’s adoption on prior period income statement amounts.  Prospective impact on costs capitalized into assets was not material.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.
ASU No. 2017-09, Scope of Modification Accounting	Provides that fewer changes to the terms of share-based payment awards will require accounting under the modification model (which generally would have required additional compensation cost).	January 1, 2018	Adopted prospectively with no immediate impact. 3M does not typically make changes to the terms or conditions of its issued share-based payments.

Standards Issued and Not Yet Adopted
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2016-02, Leases (as amended by ASU No. 2018-10)	Introduces a lessee model that requires entities to recognize assets and liabilities for most leases, but recognize expenses on their income statements in a manner similar to current accounting. This ASU does not make fundamental changes to existing lessor accounting.	January 1, 2019	Requires modified retrospective transition applied to earliest period presented 3M is currently assessing this ASU’s impact. See the “Relevant New Standards Issued Subsequent to Most Recent Annual Report” below for further discussion on ASU No. 2018-10 issued in July 2018.
ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments	Introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments and modifies the impairment model for available-for-sale debt securities. Amends the current other-than-temporary impairment model for available-for-sale debt securities. For such securities with unrealized losses, entities will still consider if a portion of any impairment is related only to credit losses and therefore recognized as a reduction in income.	January 1, 2020	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. 3M is currently assessing this ASU’s impact.
ASU No. 2017-08, Premium Amortization on Purchased Callable Debt Securities	Shortens the amortization period to the earliest call date for the premium related to certain callable debt securities that have explicit, noncontingent call features and are callable at a fixed price and preset date.	January 1, 2019	3M’s marketable security portfolio includes limited instances of callable debt securities held at a premium. 3M does not expect this ASU to have a material impact.

Standards Issued and Not Yet Adopted (continued)
Standard	Relevant Description	Effective Date for 3M	Impact and Other Matters
ASU No. 2017-11, (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception	Amends (1) the classification of financial instruments with down-round features as liabilities or equity by revising certain guidance relative to evaluating if they must be accounted for as derivative instruments and (2) the guidance on recognition and measurement of freestanding equity-classified instruments.	January 1, 2019	No financial instruments with down-round features have been issued. 3M does not expect this ASU to have a material impact.
ASU No. 2017-12, Targeted Improvements to Accounting for Hedging Activities	Amends existing guidance to simplify application of hedge accounting in certain situations and allow companies to better align their hedge accounting with risk management activities. Simplifies related accounting by eliminating requirement to separately measure and report hedge ineffectiveness. Expands an entity’s ability to hedge nonfinancial and financial risk components.	January 1, 2019	Required to make a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted.   3M is currently assessing this ASU’s impact.

Relevant New Standards Issued Subsequent to Most Recent Annual Report

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which permits entities to reclassify, to retained earnings, the one-time income tax effects stranded in accumulated other comprehensive income (AOCI) arising from the change in the U.S. federal corporate tax rate as a result of the Tax Cuts and Jobs Act of 2017. An entity that elects to make this reclassification must consider all items in AOCI that have tax effects stranded as a result of the tax rate change, and must disclose the reclassification of these tax effects as well as the entity’s policy for releasing income tax effects from AOCI. The ASU may be applied either retrospectively or as of the beginning of the period of adoption. For 3M, the ASU is effective January 1, 2019. While this ASU will have no impact on 3M’s results of operations, the Company is currently assessing this standard’s impact on its consolidated financial condition.

In June 2018, the FASB issued ASU No. 2018-07, Improvements to Nonemployee Share-Based Payment Accounting, which largely aligns the measurement and classification guidance for share-based payments to nonemployees with the guidance for share-based payments to employees. The ASU also clarifies that any share-based payment issued to a customer should be evaluated under ASC 606, Revenue from Contracts with Customers. The ASU requires a modified retrospective transition approach. For 3M, the ASU is effective as of January 1, 2019. Because the Company does not grant share-based payments to nonemployees or customers, this ASU will not have a material impact on its consolidated results of operations and financial condition.

In June 2018, the FASB issued ASU No. 2018-08, Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The ASU applies to entities that receive or make contributions, which primarily are not-for-profit entities but also affects business entities that make contributions. In the context of business entities that make contributions, the FASB clarified that a contribution is conditional if the arrangement includes both a barrier for the recipient to be entitled to the assets transferred and a right of return for the assets transferred (or a right of release of the business entity’s obligation to transfer assets). The recognition of contribution expense is deferred for conditional arrangements and is immediate for unconditional arrangements. The ASU requires modified prospective transition to arrangements that have not been completed as of the effective date or that are entered into after the effective date, but full retrospective application to each period presented is permitted. For 3M, the ASU is effective as of January 1, 2019. The Company does not expect this ASU to have a material impact on its consolidated results of operations and financial condition.

In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases, which amends ASU No. 2016-02, Leases. The new ASU includes certain clarifications to address potential narrow-scope implementation issues which the Company is incorporating into its assessment and adoption of ASU No. 2016-02. This ASU has the same transition requirements and effective date as ASU No. 2016-02, which for 3M is January 1, 2019.

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Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Significant Accounting Policies

Impact on previously reported values after correction

Three months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	7,810	$	7,810	$	—
Operating expenses
Cost of sales		4,007		4,020		13
Selling, general and administrative expenses		1,607		1,620		13
Research, development and related expenses		473		478		5
Gain on sale of businesses		(461)		(461)		—
Total operating expenses		5,626		5,657		31
Operating income	$	2,184	$	2,153	$	(31)
Other expense (income), net	$	42	$	11	$	(31)
Income before income taxes	$	2,142	$	2,142	$	—

Six months ended June 30, 2017	Previously
(Millions)	Reported		Revised		Change
Net Sales	$	15,495	$	15,495	$	—
Operating expenses
Cost of sales		7,876		7,902		26
Selling, general and administrative expenses		3,207		3,234		27
Research, development and related expenses		944		954		10
Gain on sale of businesses		(490)		(490)		—
Total operating expenses		11,537		11,600		63
Operating income	$	3,958	$	3,895	$	(63)
Other expense (income), net	$	79	$	16	$	(63)
Income before income taxes	$	3,879	$	3,879	$	—

Earnings per share

	Three months ended				Six months ended
	June 30,				June 30,
(Amounts in millions, except per share amounts)	2018		2017		2018		2017
Numerator:
Net income attributable to 3M	$	1,857	$	1,583	$	2,459	$	2,906
Denominator:
Denominator for weighted average 3M common shares outstanding – basic		591.4		598.1		593.8		598.1
Dilution associated with the Company’s stock-based compensation plans		12.8		14.7		14.7		14.3
Denominator for weighted average 3M common shares outstanding – diluted		604.2		612.8		608.5		612.4
Earnings per share attributable to 3M common shareholders – basic	$	3.14	$	2.65	$	4.14	$	4.86
Earnings per share attributable to 3M common shareholders – diluted	$	3.07	$	2.58	$	4.04	$	4.74

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Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue

Schedule of disaggregated revenue recognized during the period

	Three months ended				Six months ended
	June 30,				June 30,
Net Sales (Millions)	2018		2017		2018		2017
Abrasives	$	473	$	437	$	948	$	867
Adhesives and Tapes		1,165		1,096		2,318		2,171
Advanced Materials		317		287		621		574
Automotive and Aerospace		519		489		1,078		997
Automotive Aftermarket		438		418		856		835
Separation and Purification		238		219		474		439
Other Industrial		(2)		—		(3)		(1)
Total Industrial Business Group	$	3,148	$	2,946	$	6,292	$	5,882
Commercial Solutions	$	502	$	457	$	987	$	900
Personal Safety		957		721		1,919		1,428
Roofing Granules		99		96		200		193
Transportation Safety		257		295		493		598
Other Safety and Graphics		—		—		(1)		—
Total Safety and Graphics Business Group	$	1,815	$	1,569	$	3,598	$	3,119
Drug Delivery	$	119	$	120	$	238	$	241
Food Safety		84		76		166		149
Health Information Systems		205		195		410		386
Medical Solutions		772		729		1,548		1,443
Oral Care		342		330		696		666
Other Health Care		(2)		(1)		(2)		(1)
Total Health Care Business Group	$	1,520	$	1,449	$	3,056	$	2,884
Electronics	$	925	$	883	$	1,856	$	1,761
Energy		411		404		831		817
Other Electronics and Energy		1		3		—		3
Total Electronics and Energy Business Group	$	1,337	$	1,290	$	2,687	$	2,581
Consumer Health Care	$	100	$	104	$	202	$	206
Home Care		255		253		524		514
Home Improvement		507		460		954		868
Stationery and Office		351		340		650		632
Other Consumer		10		12		20		22
Total Consumer Business Group	$	1,223	$	1,169	$	2,350	$	2,242
Corporate and Unallocated	$	12	$	2	$	12	$	3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495

	Three months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,182	$	870	$	777	$	318	$	1	$	3,148
Safety and Graphics			747		419		443		206		—		1,815
Health Care			703		292		381		145		(1)		1,520
Electronics and Energy			244		899		131		63		—		1,337
Consumer			742		236		138		105		2		1,223
Corporate and Unallocated			8		1		1		4		(2)		12
Elimination of Dual Credit			(278)		(213)		(113)		(60)		(1)		(665)
Total Company		$	3,348	$	2,504	$	1,758	$	781	$	(1)	$	8,390

	Six months ended June 30, 2018
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,282	$	1,814	$	1,562	$	634	$	—	$	6,292
Safety and Graphics			1,399		916		879		404		—		3,598
Health Care			1,405		591		775		286		(1)		3,056
Electronics and Energy			473		1,810		276		129		(1)		2,687
Consumer			1,352		508		279		211		—		2,350
Corporate and Unallocated			8		—		1		3		—		12
Elimination of Dual Credit			(527)		(459)		(222)		(119)		—		(1,327)
Total Company		$	6,392	$	5,180	$	3,550	$	1,548	$	(2)	$	16,668

	Three months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	1,114	$	810	$	709	$	314	$	(1)	$	2,946
Safety and Graphics			639		370		364		195		1		1,569
Health Care			697		261		353		137		1		1,449
Electronics and Energy			233		855		136		67		(1)		1,290
Consumer			694		231		139		105		—		1,169
Corporate and Unallocated			2		2		—		(1)		(1)		2
Elimination of Dual Credit			(252)		(207)		(96)		(60)		—		(615)
Total Company		$	3,127	$	2,322	$	1,605	$	757	$	(1)	$	7,810

	Six months ended June 30, 2017
Net Sales (Millions)		United States		Asia Pacific		Europe, Middle East and Africa		Latin America and Canada		Other Unallocated		Worldwide
Industrial		$	2,196	$	1,663	$	1,405	$	619	$	(1)	$	5,882
Safety and Graphics			1,220		801		715		383		—		3,119
Health Care			1,387		521		706		270		—		2,884
Electronics and Energy			464		1,706		279		132		—		2,581
Consumer			1,281		490		265		207		(1)		2,242
Corporate and Unallocated			3		1		—		—		(1)		3
Elimination of Dual Credit			(483)		(427)		(188)		(118)		—		(1,216)
Total Company		$	6,068	$	4,755	$	3,182	$	1,493	$	(3)	$	15,495

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Acquisitions and Divestitures (Tables)

6 Months Ended

Jun. 30, 2018

Acquisitions

Approximate amounts of major assets and liabilities associated with disposal groups classified as held-for-sale

	December 31,
(Millions)	2017
Accounts receivable	$	25
Property, plant and equipment (net)		20

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Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets

Goodwill

	December 31, 2017		Acquisition		Divestiture		Translation		June 30, 2018
(Millions)	Balance		activity		activity		and other		Balance
Industrial	$	2,678	$	—	$	(4)	$	(44)	$	2,630
Safety and Graphics		4,419		(16)		(8)		(57)		4,338
Health Care		1,682		—		—		(19)		1,663
Electronics and Energy		1,524		—		(247)		(10)		1,267
Consumer		210		—		—		(1)		209
Total Company	$	10,513	$	(16)	$	(259)	$	(131)	$	10,107

Acquired Intangible Assets

	June 30,		December 31,
(Millions)	2018		2017
Customer related intangible assets	$	2,302	$	2,332
Patents		554		561
Other technology-based intangible assets		578		583
Definite-lived tradenames		676		678
Other amortizable intangible assets		204		207
Total gross carrying amount	$	4,314	$	4,361
Accumulated amortization — customer related		(931)		(874)
Accumulated amortization — patents		(491)		(489)
Accumulated amortization — other technology based		(312)		(292)
Accumulated amortization — definite-lived tradenames		(272)		(256)
Accumulated amortization — other		(164)		(162)
Total accumulated amortization	$	(2,170)	$	(2,073)
Total finite-lived intangible assets — net	$	2,144	$	2,288
Non-amortizable intangible assets (primarily tradenames)		643		648
Total intangible assets — net	$	2,787	$	2,936

Schedule of amortization expense for acquired intangible assets

Amortization expense for acquired intangible assets for the three and six months ended June 30, 2018 and 2017 follows:

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Amortization expense	$	63	$	47	$	127	$	111

Schedule of expected amortization expense for acquired amortizable intangible assets

Expected amortization expense for acquired amortizable intangible assets recorded as of June 30, 2018:

	Remainder of												After
(Millions)	2018		2019		2020		2021		2022		2023		2023
Amortization expense	$	123	$	241	$	229	$	220	$	206	$	175	$	950

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Restructuring Actions and Exit Activities (Tables)

6 Months Ended

Jun. 30, 2018

2018 Restructuring Actions

Schedule of restructuring charges by income statement line

The restructuring charges were recorded in the income statement as follows:

(Millions)	Second Quarter 2018
Cost of sales	$	12
Selling, general and administrative expenses		89
Research, development and related expenses		4
Total	$	105

Accrued restructuring action balances

Components of these restructuring actions, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2018	$	105
Cash payments		(6)
Accrued restructuring action balances as of June 30, 2018	$	99

2017 Restructuring Actions

Accrued restructuring action balances

Components of these restructuring actions, including cash and non-cash impacts, follow:

(Millions)	Employee-Related
Expense incurred in the second quarter of 2017	$	99
Cash payments		(8)
Adjustments		(3)
Accrued restructuring action balances as of December 31, 2017	$	88
Cash payments		(13)
Adjustments		(27)
Accrued restructuring action balances as of June 30, 2018	$	48

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Supplemental Income Statement Information (Tables)

6 Months Ended

Jun. 30, 2018

Supplemental Income Statement Information

Schedule of other expense (income)

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Interest expense	$	88	$	54	$	170	$	99
Interest income		(16)		(12)		(37)		(20)
Pension and postretirement net periodic benefit cost (benefit)		(21)		(31)		(40)		(63)
Total	$	51	$	11	$	93	$	16

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Supplemental Equity and Comprehensive Income Information (Tables)

6 Months Ended

Jun. 30, 2018

Supplemental Equity and Comprehensive Income Information

Consolidated Statement of Changes in Equity

Three months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2018	$	11,039	$	5,505	$	38,453	$	(26,178)	$	(6,803)	$	62
Net income		1,862				1,857						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(496)								(492)		(4)
Defined benefit pension and post-retirement plans adjustment		114								114		—
Cash flow hedging instruments - unrealized gain (loss)		162								162		—
Total other comprehensive income (loss), net of tax		(220)
Dividends declared		(802)				(802)
Stock-based compensation		54		54
Reacquired stock		(1,591)						(1,591)
Issuances pursuant to stock option and benefit plans		86				(66)		152
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

Six months ended June 30, 2018

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2017	$	11,622	$	5,361	$	39,115	$	(25,887)	$	(7,026)	$	59
Net income		2,468				2,459						9
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(329)								(324)		(5)
Defined benefit pension and post-retirement plans adjustment		230								230		—
Cash flow hedging instruments - unrealized gain (loss)		101								101		—
Total other comprehensive income (loss), net of tax		2
Dividends declared		(1,612)				(1,612)
Stock-based compensation		198		198
Reacquired stock		(2,563)						(2,563)
Issuances pursuant to stock option and benefit plans		313				(520)		833
Balance at June 30, 2018	$	10,428	$	5,559	$	39,442	$	(27,617)	$	(7,019)	$	63

Three months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at March 31, 2017	$	11,040	$	5,198	$	38,094	$	(25,354)	$	(6,949)	$	51
Net income		1,585				1,583						2
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		(67)								(67)		—
Defined benefit pension and post-retirement plans adjustment		78								78		—
Cash flow hedging instruments - unrealized gain (loss)		(51)								(51)		—
Total other comprehensive income (loss), net of tax		(40)
Dividends declared		(701)				(701)
Stock-based compensation		55		55
Reacquired stock		(475)						(475)
Issuances pursuant to stock option and benefit plans		180				(183)		363
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

Six months ended June 30, 2017

			3M Company Shareholders
			Common						Accumulated
			Stock and						Other
			Additional						Comprehensive		Non-
			Paid-in		Retained		Treasury		Income		controlling
(Millions)	Total		Capital		Earnings		Stock		(Loss)		Interest
Balance at December 31, 2016	$	10,343	$	5,070	$	37,907	$	(25,434)	$	(7,245)	$	45
Net income		2,911				2,906						5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment		225								222		3
Defined benefit pension and post-retirement plans adjustment		161								161		—
Cash flow hedging instruments - unrealized gain (loss)		(127)								(127)		—
Total other comprehensive income (loss), net of tax		259
Dividends declared		(1,403)				(1,403)
Stock-based compensation		183		183
Reacquired stock		(1,153)						(1,153)
Issuances pursuant to stock option and benefit plans		504				(617)		1,121
Balance at June 30, 2017	$	11,644	$	5,253	$	38,793	$	(25,466)	$	(6,989)	$	53

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

Three months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2018, net of tax:	$	(1,470)	$	(5,160)	$	(173)	$	(6,803)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(411)		—		182		(229)
Amounts reclassified out		—		151		28		179
Total other comprehensive income (loss), before tax		(411)		151		210		(50)
Tax effect		(81)		(37)		(48)		(166)
Total other comprehensive income (loss), net of tax		(492)		114		162		(216)
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

Six months ended June 30, 2018

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2017, net of tax:	$	(1,638)	$	(5,276)	$	(112)	$	(7,026)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(282)		—		100		(182)
Amounts reclassified out		—		302		62		364
Total other comprehensive income (loss), before tax		(282)		302		162		182
Tax effect		(42)		(72)		(61)		(175)
Total other comprehensive income (loss), net of tax		(324)		230		101		7
Balance at June 30, 2018, net of tax:	$	(1,962)	$	(5,046)	$	(11)	$	(7,019)

Three months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at March 31, 2017, net of tax:	$	(1,719)	$	(5,245)	$	15	$	(6,949)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(167)		—		(74)		(241)
Amounts reclassified out		—		119		(5)		114
Total other comprehensive income (loss), before tax		(167)		119		(79)		(127)
Tax effect		100		(41)		28		87
Total other comprehensive income (loss), net of tax		(67)		78		(51)		(40)
Balance at June 30, 2017, net of tax:	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Six months ended June 30, 2017

							Total
			Defined Benefit		Cash Flow		Accumulated
			Pension and		Hedging		Other
	Cumulative		Postretirement		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		(Loss)
Balance at December 31, 2016, net of tax:	$	(2,008)	$	(5,328)	$	91	$	(7,245)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		59		—		(175)		(116)
Amounts reclassified out		—		238		(23)		215
Total other comprehensive income (loss), before tax		59		238		(198)		99
Tax effect		163		(77)		71		157
Total other comprehensive income (loss), net of tax		222		161		(127)		256
Balance at June 30, 2017, net of tax	$	(1,786)	$	(5,167)	$	(36)	$	(6,989)

Reclassifications Out of Accumulated Other Comprehensive Income

	Amount Reclassified from
Details about Accumulated Other	Accumulated Other Comprehensive Income
Comprehensive Income Components	Three months ended June 30,				Six months ended June 30,				Location on Income
(Millions)	2018		2017		2018		2017		Statement
Gains (losses) associated with defined benefit pension and postretirement plans amortization
Prior service benefit	$	19	$	22	$	38	$	44	See Note 11
Net actuarial loss		(170)		(141)		(340)		(282)	See Note 11
Total before tax		(151)		(119)		(302)		(238)
Tax effect		37		41		72		77	Provision for income taxes
Net of tax	$	(114)	$	(78)	$	(230)	$	(161)
Cash flow hedging instruments gains (losses)
Foreign currency forward/option contracts	$	(27)	$	5	$	(61)	$	23	Cost of sales
Interest rate swap contracts		(1)		—		(1)		—	Interest expense
Total before tax		(28)		5		(62)		23
Tax effect		7		(2)		15		(8)	Provision for income taxes
Net of tax	$	(21)	$	3	$	(47)	$	15
Total reclassifications for the period, net of tax	$	(135)	$	(75)	$	(277)	$	(146)

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Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2018

Marketable Securities.

Schedule of marketable securities

(Millions)	June 30, 2018		December 31, 2017
Corporate debt securities	$	—	$	14
Commercial paper		347		899
Certificates of deposit/time deposits		31		76
U.S. municipal securities		4		3
Asset-backed securities:
Automobile loan related		3		16
Credit card related		—		68
Asset-backed securities total		3		84
Current marketable securities	$	385	$	1,076
U.S. municipal securities	$	26	$	27
Non-current marketable securities	$	26	$	27
Total marketable securities	$	411	$	1,103

Marketable securities by contractual maturity

(Millions)	June 30, 2018
Due in one year or less	$	382
Due after one year through five years		15
Due after five years through ten years		14
Total marketable securities	$	411

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Pension and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2018

Pension and Postretirement Benefit Plans

Components of net periodic benefit cost (benefit)

	Three months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	72	$	67	$	37	$	34	$	13	$	12
Non-operating expense
Interest cost	$	141	$	142	$	40	$	37	$	20	$	20
Expected return on plan assets		(272)		(259)		(79)		(69)		(21)		(21)
Amortization of prior service benefit		(6)		(6)		(3)		(3)		(10)		(13)
Amortization of net actuarial loss		126		97		29		30		15		14
Total non-operating expense (benefit)		(11)		(26)		(13)		(5)		4		—
Total net periodic benefit cost (benefit)	$	61	$	41	$	24	$	29	$	17	$	12

	Six months ended June 30,
	Qualified and Non-qualified
	Pension Benefits								Postretirement
	United States				International				Benefits
(Millions)	2018		2017		2018		2017		2018		2017
Net periodic benefit cost (benefit)
Operating expense
Service cost	$	144	$	134	$	73	$	67	$	26	$	25
Non-operating expense
Interest cost	$	282	$	284	$	80	$	74	$	40	$	39
Expected return on plan assets		(544)		(518)		(157)		(138)		(42)		(42)
Amortization of prior service benefit		(12)		(12)		(6)		(6)		(20)		(26)
Amortization of net actuarial loss		252		194		58		60		30		28
Total non-operating expense (benefit)		(22)		(52)		(25)		(10)		8		(1)
Total net periodic benefit cost (benefit)	$	122	$	82	$	48	$	57	$	34	$	24

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2018

Derivatives

Gain (loss) on derivative instruments designated as cash flow hedges

			Pretax Gain (Loss) Recognized in
	Pretax Gain (Loss)		Income on Effective Portion of			Ineffective Portion of Gain
	Recognized in Other		Derivative as a Result of			(Loss) on Derivative and
	Comprehensive		Reclassification from			Amount Excluded from
	Income on Effective		Accumulated Other			Effectiveness Testing
Three months ended June 30, 2018	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	179	Cost of sales	$	(27)	Cost of sales	$	—
Interest rate swap contracts		3	Interest expense		(1)	Interest expense		—
Total	$	182		$	(28)		$	—

Six months ended June 30, 2018
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	100	Cost of sales	$	(61)	Cost of sales	$	—
Interest rate swap contracts		—	Interest expense		(1)	Interest expense		—
Total	$	100		$	(62)		$	—

Three months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(72)	Cost of sales	$	5	Cost of sales	$	—
Interest rate swap contracts		(2)	Interest expense		—	Interest expense		—
Total	$	(74)		$	5		$	—

Six months ended June 30, 2017	Portion of Derivative		Comprehensive Income			Recognized in Income
(Millions)	Amount		Location	Amount		Location	Amount
Foreign currency forward/option contracts	$	(172)	Cost of sales	$	23	Cost of sales	$	—
Interest rate swap contracts		(3)	Interest expense		—	Interest expense		—
Total	$	(175)		$	23		$	—

Gain (loss) on derivative instruments designated as fair value hedges

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item
Three months ended June 30, 2018	Recognized in Income			Recognized in Income
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(1)	Interest expense	$	1
Total		$	(1)		$	1

Six months ended June 30, 2018
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(12)	Interest expense	$	12
Total		$	(12)		$	12

Three months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	1	Interest expense	$	(1)
Total		$	1		$	(1)

Six months ended June 30, 2017
(Millions)	Location	Amount		Location	Amount
Interest rate swap contracts	Interest expense	$	(4)	Interest expense	$	4
Total		$	(4)		$	4

Gain (loss) on derivative and non-derivative instruments designated as net investment hedges

	Pretax Gain (Loss)
	Recognized as
	Cumulative Translation
	within Other		Ineffective Portion of Gain (Loss) on
	Comprehensive Income		Instrument and Amount Excluded
	on Effective Portion of		from Effectiveness Testing
Three months ended June 30, 2018	Instrument		Recognized in Income
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	299	Cost of sales	$	—
Foreign currency forward contracts		23	Cost of sales		1
Total	$	322		$	1

Six months ended June 30, 2018	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	171	Cost of sales	$	(2)
Foreign currency forward contracts		17	Cost of sales		—
Total	$	188		$	(2)

Three months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(270)	Cost of sales	$	—
Foreign currency forward contracts		(7)	Cost of sales		3
Total	$	(277)		$	3

Six months ended June 30, 2017	Comprehensive Income		Instrument and Amount Excluded
(Millions)	Amount		Location	Amount
Foreign currency denominated debt	$	(391)	Cost of sales	$	—
Foreign currency forward contracts		(27)	Cost of sales		5
Total	$	(418)		$	5

Gain (loss) on derivative instruments not designated as hedging instruments

	Three months ended June 30, 2018			Six months ended June 30, 2018
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	3	Cost of sales	$	—
Foreign currency forward contracts	Interest expense		(114)	Interest expense		(91)
Total		$	(111)		$	(91)

	Three months ended June 30, 2017			Six months ended June 30, 2017
	Gain (Loss) on Derivative Recognized in			Gain (Loss) on Derivative Recognized in
	Income			Income
(Millions)	Location	Amount		Location	Amount
Foreign currency forward/option contracts	Cost of sales	$	6	Cost of sales	$	5
Foreign currency forward contracts	Interest expense		(138)	Interest expense		(96)
Total		$	(132)		$	(91)

Location and Fair Value of Derivative Instruments

	Gross		Assets			Liabilities
June 30, 2018	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,054	Other current assets	$	46	Other current liabilities	$	21
Foreign currency forward/option contracts		1,264	Other assets		42	Other liabilities		13
Interest rate swap contracts		1,350	Other current assets		—	Other current liabilities		7
Interest rate swap contracts		1,103	Other assets		20	Other liabilities		10
Total derivatives designated as hedging instruments				$	108		$	51
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	3,834	Other current assets	$	22	Other current liabilities	$	66
Total derivatives not designated as hedging instruments				$	22		$	66
Total derivative instruments				$	130		$	117

	Gross		Assets			Liabilities
December 31, 2017	Notional			Fair			Fair
(Millions)	Amount		Location	Value Amount		Location	Value Amount
Derivatives designated as
hedging instruments
Foreign currency forward/option contracts	$	2,204	Other current assets	$	7	Other current liabilities	$	109
Foreign currency forward/option contracts		1,392	Other assets		20	Other liabilities		56
Interest rate swap contracts		450	Other current assets		—	Other current liabilities		1
Interest rate swap contracts		1,503	Other assets		21	Other liabilities		6
Total derivatives designated as hedging instruments				$	48		$	172
Derivatives not designated as
hedging instruments
Foreign currency forward/option contracts	$	4,974	Other current assets	$	30	Other current liabilities	$	25
Total derivatives not designated as hedging instruments				$	30		$	25
Total derivative instruments				$	78		$	197

Offsetting Assets

Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Assets		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Liabilities		Received		Derivative Assets
Derivatives subject to master netting agreements	$	130	$	59	$	—	$	71
Derivatives not subject to master netting agreements		—						—
Total	$	130					$	71

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	78	$	27	$	—	$	51
Derivatives not subject to master netting agreements		—						—
Total	$	78					$	51

Offsetting Liabilities

Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties

			Gross Amounts not Offset in the
			Consolidated Balance Sheet that are Subject
	Gross Amount of		to Master Netting Agreements
	Derivative Liabilities		Gross Amount of
	Presented in the		Eligible Offsetting
June 30, 2018	Consolidated		Recognized		Cash Collateral		Net Amount of
(Millions)	Balance Sheet		Derivative Assets		Pledged		Derivative Liabilities
Derivatives subject to master netting agreements	$	115	$	59	$	—	$	56
Derivatives not subject to master netting agreements		2						2
Total	$	117					$	58

December 31, 2017
(Millions)
Derivatives subject to master netting agreements	$	197	$	27	$	—	$	170
Derivatives not subject to master netting agreements		—						—
Total	$	197					$	170

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Measurements

Fair Value, Assets and Liabilities Measured on Recurring Basis

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	June 30, 2018		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Commercial paper	$	347	$	—	$	347	$	—
Certificates of deposit/time deposits		31		—		31		—
Asset-backed securities:
Automobile loan related		3		—		3		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		110		—		110		—
Interest rate swap contracts		20		—		20		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		100		—		100		—
Interest rate swap contracts		17		—		17		—

			Fair Value Measurements
Description	Fair Value at		Using Inputs Considered as
(Millions)	December 31, 2017		Level 1		Level 2		Level 3
Assets:
Available-for-sale:
Marketable securities:
Corporate debt securities	$	14	$	—	$	14	$	—
Commercial paper		899		—		899		—
Certificates of deposit/time deposits		76		—		76		—
Asset-backed securities:
Automobile loan related		16		—		16		—
Credit card related		68		—		68		—
U.S. municipal securities		30		—		—		30
Derivative instruments — assets:
Foreign currency forward/option contracts		57		—		57		—
Interest rate swap contracts		21		—		21		—
Liabilities:
Derivative instruments — liabilities:
Foreign currency forward/option contracts		190		—		190		—
Interest rate swap contracts		7		—		7		—

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

	Three months ended				Six months ended
Marketable securities — certain U.S. municipal securities only	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Beginning balance	$	30	$	20	$	30	$	20
Total gains or losses:
Included in earnings		—		—		—		—
Included in other comprehensive income		—		—		—		—
Purchases and issuances		—		—		—		—
Sales and settlements		—		—		—		—
Transfers in and/or out of level 3		—		—		—		—
Ending balance	$	30	$	20	$	30	$	20
Change in unrealized gains or losses for the period included in earnings for securities held at the end of the reporting period		—		—		—		—

Fair Value of Financial Instruments by Balance Sheet Grouping

	June 30, 2018				December 31, 2017
	Carrying		Fair		Carrying		Fair
(Millions)	Value		Value		Value		Value
Long-term debt, excluding current portion	$	11,294	$	11,474	$	12,096	$	12,535

XML

Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Stock-Based Compensation

Stock-Based Compensation Expense

Stock-Based Compensation Expense

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Cost of sales	$	9	$	9	$	32	$	32
Selling, general and administrative expenses		33		43		142		141
Research, development and related expenses		7		7		34		33
Stock-based compensation expenses	$	49	$	59	$	208	$	206
Income tax benefits	$	(19)	$	(74)	$	(117)	$	(222)
Stock-based compensation expenses (benefits), net of tax	$	30	$	(15)	$	91	$	(16)

Stock Option Activity

Stock Option Program

The following table summarizes stock option activity during the six months ended June 30, 2018:

				Weighted
				Average
		Weighted		Remaining	Aggregate
	Number of	Average		Contractual	Intrinsic Value
(Options in thousands)	Options	Exercise Price		Life (months)	(millions)
Under option —
January 1	34,965	$	125.73
Granted:
Annual	3,174		233.62
Exercised	(2,378)		89.67
Forfeited	(73)		186.24
June 30	35,688	$	137.60	71	$	2,226
Options exercisable
June 30	27,222	$	120.84	60	$	2,066

Stock Option Assumptions

Stock Option Assumptions

	Annual
	2018
Exercise price	$	233.63
Risk-free interest rate		2.7	%
Dividend yield		2.4	%
Expected volatility		21.0	%
Expected life (months)		78
Black-Scholes fair value	$	41.59

Restricted Stock and Restricted Stock Units Activity

Restricted Stock and Restricted Stock Units

The following table summarizes restricted stock and restricted stock unit activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Nonvested balance —
As of January 1	1,994	$	162.60
Granted
Annual	467		233.61
Other	3		209.26
Vested	(632)		164.37
Forfeited	(22)		177.93
As of June 30	1,810	$	180.22

Performance Shares Activity

The following table summarizes performance share activity during the six months ended June 30, 2018:

		Weighted
		Average
	Number of	Grant Date
(Shares in thousands)	Shares	Fair Value
Undistributed balance —
As of January 1	686	$	171.90
Granted	156		231.34
Distributed	(206)		159.82
Performance change	2		249.07
Forfeited	(11)		194.69
As of June 30	627	$	190.52

XML

Business Segments (Tables)

6 Months Ended

Jun. 30, 2018

Business Segments

Business Segments

Business Segment Information

	Three months ended				Six months ended
	June 30,				June 30,
(Millions)	2018		2017		2018		2017
Net Sales
Industrial	$	3,148	$	2,946	$	6,292	$	5,882
Safety and Graphics		1,815		1,569		3,598		3,119
Health Care		1,520		1,449		3,056		2,884
Electronics and Energy		1,337		1,290		2,687		2,581
Consumer		1,223		1,169		2,350		2,242
Corporate and Unallocated		12		2		12		3
Elimination of Dual Credit		(665)		(615)		(1,327)		(1,216)
Total Company	$	8,390	$	7,810	$	16,668	$	15,495
Operating Income
Industrial	$	724	$	568	$	1,443	$	1,238
Safety and Graphics		480		851		963		1,250
Health Care		435		408		895		837
Electronics and Energy		865		325		1,202		581
Consumer		261		198		479		421
Corporate and Unallocated		(206)		(51)		(1,252)		(144)
Elimination of Dual Credit		(158)		(146)		(322)		(288)
Total Company	$	2,401	$	2,153	$	3,408	$	3,895

XML

Significant Accounting Policies - Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle
Net sales	$ 8,390	$ 7,810	$ 16,668	$ 15,495
Operating expenses
Cost of sales	4,227	4,020	8,463	7,902
Selling, general and administrative expenses	1,800	1,620	4,373	3,234
Research, development and related expenses	468	478	954	954
Gain on sale of businesses	(506)	(461)	(530)	(490)
Total operating expenses	5,989	5,657	13,260	11,600
Operating income	2,401	2,153	3,408	3,895
Other expense (income), net	51	11	93	16
Income before income taxes	$ 2,350	2,142	$ 3,315	3,879
Previously Reported | ASU 2017-07 Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost
New Accounting Pronouncements or Change in Accounting Principle
Net sales		7,810		15,495
Operating expenses
Cost of sales		4,007		7,876
Selling, general and administrative expenses		1,607		3,207
Research, development and related expenses		473		944
Gain on sale of businesses		(461)		(490)
Total operating expenses		5,626		11,537
Operating income		2,184		3,958
Other expense (income), net		42		79
Income before income taxes		2,142		3,879
Change | ASU 2017-07 Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost
Operating expenses
Cost of sales		13		26
Selling, general and administrative expenses		13		27
Research, development and related expenses		5		10
Total operating expenses		31		63
Operating income		(31)		(63)
Other expense (income), net		$ (31)		$ (63)

XML

Significant Accounting Policies - Foreign Currency Translation (Details) - Subsidiary $ in Millions, $ in Millions, in Billions	6 Months Ended	12 Months Ended
	Jun. 30, 2018 VEF ( )	Dec. 31, 2017	Jun. 30, 2018 ARS ($)	Jun. 30, 2018 USD ($)
Venezuela
Foreign Currency Translation
Accumulated other comprehensive loss that 3M Company has recorded from its Venezuelan subsidiary				$ 145
Foreign currency exchange rate	96,000		96,000	96,000
Argentina
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
Foreign currency exchange rate	28		28	28
Maximum | Venezuela
Foreign Currency Translation
Balance of the Company's overall net monetary assets valued functional currency |	860
Maximum | Argentina
Foreign Currency Translation
Operating income of subsidiaries as percent of consolidated amount high end of range		0.50%
Balance of the Company's overall net monetary assets valued functional currency			$ 230

XML

Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings per share
Options outstanding not included in computation of diluted earnings per share (in shares)	3.5		2.7	1.6
Numerator:
Net income attributable to 3M	$ 1,857	$ 1,583	$ 2,459	$ 2,906
Denominator:
Denominator for weighted average 3M common shares outstanding - basic (in shares)	591.4	598.1	593.8	598.1
Dilution associated with the Company's stock-based compensation plans (in shares)	12.8	14.7	14.7	14.3
Denominator for weighted average 3M common shares outstanding - diluted (in shares)	604.2	612.8	608.5	612.4
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$ 3.14	$ 2.65	$ 4.14	$ 4.86
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$ 3.07	$ 2.58	$ 4.04	$ 4.74

XML

Significant Accounting Policies - New Accounting Pronouncements (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings	$ 39,442		$ 39,115
ASU 2016-16 Intra-Entity Transfers of Assets Other Than Inventory | Maximum
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings		$ (2)
Difference between Revenue Guidance in Effect before and after Topic 606 | Maximum
New Accounting Pronouncements or Change in Accounting Principle
Retained earnings		$ 2

XML

Revenue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition
Retained earnings	$ 39,442	$ 39,442		$ 39,115
Contract Balance
Current deferred income balances	512	512		$ 513
Net Sales	8,390	$ 16,668
Exemptions and Practical Expedients Applied or Elected
Practical Expedient, unfulfilled performance obligation		true
Practical Expedient, relative to costs of obtaining a contract		true
Difference between Revenue Guidance in Effect before and after Topic 606 | Maximum
Revenue, Initial Application Period Cumulative Effect Transition
Retained earnings			$ 2
ASU 2014-09 Revenue from Contracts with Customers | Difference between Revenue Guidance in Effect before and after Topic 606
Contract Balance
Net Sales	$ 110	$ 390

XML

Revenue - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue
Net Sales	$ 8,390		$ 16,668
Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		$ 7,810		$ 15,495
Abrasives
Disaggregation of Revenue
Net Sales	473		948
Abrasives | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		437		867
Adhesives and Tapes
Disaggregation of Revenue
Net Sales	1,165		2,318
Adhesives and Tapes | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,096		2,171
Advanced Materials
Disaggregation of Revenue
Net Sales	317		621
Advanced Materials | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		287		574
Automotive and Aerospace
Disaggregation of Revenue
Net Sales	519		1,078
Automotive and Aerospace | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		489		997
Automotive Aftermarket
Disaggregation of Revenue
Net Sales	438		856
Automotive Aftermarket | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		418		835
Separation and Purification
Disaggregation of Revenue
Net Sales	238		474
Separation and Purification | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		219		439
Other Industrial
Disaggregation of Revenue
Net Sales	2		3
Other Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales				1
Commercial Solutions
Disaggregation of Revenue
Net Sales	502		987
Commercial Solutions | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		457		900
Personal Safety
Disaggregation of Revenue
Net Sales	957		1,919
Personal Safety | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		721		1,428
Roofing Granules
Disaggregation of Revenue
Net Sales	99		200
Roofing Granules | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		96		193
Transportation Safety
Disaggregation of Revenue
Net Sales	257		493
Transportation Safety | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		295		598
Other Safety and Graphics
Disaggregation of Revenue
Net Sales			1
Drug Delivery
Disaggregation of Revenue
Net Sales	119		238
Drug Delivery | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		120		241
Food Safety
Disaggregation of Revenue
Net Sales	84		166
Food Safety | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		76		149
Health Information Systems
Disaggregation of Revenue
Net Sales	205		410
Health Information Systems | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		195		386
Medical Solutions
Disaggregation of Revenue
Net Sales	772		1,548
Medical Solutions | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		729		1,443
Oral Care
Disaggregation of Revenue
Net Sales	342		696
Oral Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		330		666
Other Health Care
Disaggregation of Revenue
Net Sales	2		2
Other Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1		1
Electronics
Disaggregation of Revenue
Net Sales	925		1,856
Electronics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		883		1,761
Energy
Disaggregation of Revenue
Net Sales	411		831
Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		404		817
Other Electronics and Energy
Disaggregation of Revenue
Net Sales	1
Other Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		3		3
Consumer Health Care
Disaggregation of Revenue
Net Sales	100		202
Consumer Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		104		206
Home Care
Disaggregation of Revenue
Net Sales	255		524
Home Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		253		514
Home Improvement
Disaggregation of Revenue
Net Sales	507		954
Home Improvement | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		460		868
Stationery and Office
Disaggregation of Revenue
Net Sales	351		650
Stationery and Office | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		340		632
Other Consumer
Disaggregation of Revenue
Net Sales	10		20
Other Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		12		22
Corporate and Unallocated
Disaggregation of Revenue
Net Sales	12		12
Corporate and Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		2		3
Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	(665)		(1,327)
Elimination of Dual Credit | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(615)		(1,216)
Industrial
Disaggregation of Revenue
Net Sales	3,148		6,292
Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		2,946		5,882
Safety and Graphics
Disaggregation of Revenue
Net Sales	1,815		3,598
Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,569		3,119
Health Care
Disaggregation of Revenue
Net Sales	1,520		3,056
Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,449		2,884
Electronics and Energy
Disaggregation of Revenue
Net Sales	1,337		2,687
Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,290		2,581
Consumer
Disaggregation of Revenue
Net Sales	1,223		2,350
Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,169		2,242
United States
Disaggregation of Revenue
Net Sales	3,348		6,392
United States | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		3,127		6,068
United States | Corporate and Unallocated
Disaggregation of Revenue
Net Sales	8		8
United States | Corporate and Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		2		3
United States | Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	(278)		(527)
United States | Elimination of Dual Credit | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(252)		(483)
United States | Industrial
Disaggregation of Revenue
Net Sales	1,182		2,282
United States | Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,114		2,196
United States | Safety and Graphics
Disaggregation of Revenue
Net Sales	747		1,399
United States | Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		639		1,220
United States | Health Care
Disaggregation of Revenue
Net Sales	703		1,405
United States | Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		697		1,387
United States | Electronics and Energy
Disaggregation of Revenue
Net Sales	244		473
United States | Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		233		464
United States | Consumer
Disaggregation of Revenue
Net Sales	742		1,352
United States | Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		694		1,281
Asia Pacific
Disaggregation of Revenue
Net Sales	2,504		5,180
Asia Pacific | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		2,322		4,755
Asia Pacific | Corporate and Unallocated
Disaggregation of Revenue
Net Sales	1
Asia Pacific | Corporate and Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		2		1
Asia Pacific | Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	(213)		(459)
Asia Pacific | Elimination of Dual Credit | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(207)		(427)
Asia Pacific | Industrial
Disaggregation of Revenue
Net Sales	870		1,814
Asia Pacific | Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		810		1,663
Asia Pacific | Safety and Graphics
Disaggregation of Revenue
Net Sales	419		916
Asia Pacific | Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		370		801
Asia Pacific | Health Care
Disaggregation of Revenue
Net Sales	292		591
Asia Pacific | Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		261		521
Asia Pacific | Electronics and Energy
Disaggregation of Revenue
Net Sales	899		1,810
Asia Pacific | Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		855		1,706
Asia Pacific | Consumer
Disaggregation of Revenue
Net Sales	236		508
Asia Pacific | Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		231		490
Europe, Middle East and Africa
Disaggregation of Revenue
Net Sales	1,758		3,550
Europe, Middle East and Africa | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1,605		3,182
Europe, Middle East and Africa | Corporate and Unallocated
Disaggregation of Revenue
Net Sales	1		1
Europe, Middle East and Africa | Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	(113)		(222)
Europe, Middle East and Africa | Elimination of Dual Credit | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(96)		(188)
Europe, Middle East and Africa | Industrial
Disaggregation of Revenue
Net Sales	777		1,562
Europe, Middle East and Africa | Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		709		1,405
Europe, Middle East and Africa | Safety and Graphics
Disaggregation of Revenue
Net Sales	443		879
Europe, Middle East and Africa | Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		364		715
Europe, Middle East and Africa | Health Care
Disaggregation of Revenue
Net Sales	381		775
Europe, Middle East and Africa | Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		353		706
Europe, Middle East and Africa | Electronics and Energy
Disaggregation of Revenue
Net Sales	131		276
Europe, Middle East and Africa | Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		136		279
Europe, Middle East and Africa | Consumer
Disaggregation of Revenue
Net Sales	138		279
Europe, Middle East and Africa | Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		139		265
Latin America and Canada
Disaggregation of Revenue
Net Sales	781		1,548
Latin America and Canada | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		757		1,493
Latin America and Canada | Corporate and Unallocated
Disaggregation of Revenue
Net Sales	4		3
Latin America and Canada | Corporate and Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(1)
Latin America and Canada | Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	(60)		(119)
Latin America and Canada | Elimination of Dual Credit | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		(60)		(118)
Latin America and Canada | Industrial
Disaggregation of Revenue
Net Sales	318		634
Latin America and Canada | Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		314		619
Latin America and Canada | Safety and Graphics
Disaggregation of Revenue
Net Sales	206		404
Latin America and Canada | Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		195		383
Latin America and Canada | Health Care
Disaggregation of Revenue
Net Sales	145		286
Latin America and Canada | Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		137		270
Latin America and Canada | Electronics and Energy
Disaggregation of Revenue
Net Sales	63		129
Latin America and Canada | Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		67		132
Latin America and Canada | Consumer
Disaggregation of Revenue
Net Sales	105		211
Latin America and Canada | Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		105		207
Other Unallocated
Disaggregation of Revenue
Net Sales	1		2
Other Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1		3
Other Unallocated | Corporate and Unallocated
Disaggregation of Revenue
Net Sales	2
Other Unallocated | Corporate and Unallocated | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1		1
Other Unallocated | Elimination of Dual Credit
Disaggregation of Revenue
Net Sales	1
Other Unallocated | Industrial
Disaggregation of Revenue
Net Sales	1
Other Unallocated | Industrial | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1		1
Other Unallocated | Safety and Graphics | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1
Other Unallocated | Health Care
Disaggregation of Revenue
Net Sales	1		1
Other Unallocated | Health Care | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		1
Other Unallocated | Electronics and Energy
Disaggregation of Revenue
Net Sales			$ 1
Other Unallocated | Electronics and Energy | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales		$ 1
Other Unallocated | Consumer
Disaggregation of Revenue
Net Sales	$ 2
Other Unallocated | Consumer | Calculated under Revenue Guidance in Effect before Topic 606
Disaggregation of Revenue
Net Sales				$ 1

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Acquisitions and Divestitures - Acquisitions (Details) $ in Millions	1 Months Ended	6 Months Ended
	Oct. 31, 2017 USD ($)	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 item
Supplemental information:
Cash paid, net of cash acquired		$ (13)
Number of business combinations completed | item		0	0
Scott Safety
Supplemental information:
Cash paid, net of cash acquired	$ 2,000
Adjustments to purchase price allocation		$ 16

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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Millions	1 Months Ended			6 Months Ended
	Jun. 30, 2018	May 31, 2018	Feb. 28, 2018	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Divestiture Information
Aggregate operating income of divested businesses				$ 25	$ 10
Disposal Group, Held-for-sale, Not Discontinued Operations
Divestiture Information
Disposal - Accounts receivable						$ 25
Disposal - Property, plant and equipment						20
Disposal - Goodwill						$ 275
Communication Markets Division | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business	$ 400
Proceeds from divested businesses	772
Estimated pre-tax gain on sale	$ 494
Communication Markets Division | Disposal Group, Held-for-sale, Not Discontinued Operations
Divestiture Information
Proceeds from divested businesses				$ 30
Personal Safety Product Offerings | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business			$ 15
Personal Safety Product Offerings | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Maximum
Divestiture Information
Pre-tax gain on sale			$ 20
Abrasives glass products business | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Divestiture Information
Annual sales of divested business		$ 10
Abrasives glass products business | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Maximum
Divestiture Information
Pre-tax gain on sale		$ 15

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Goodwill and Intangible Assets (Goodwill balance by business segment) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Jun. 30, 2018
Goodwill
Balance at the beginning of the period	$ 10,513	$ 10,513
Acquisition activity		(16)
Divestiture activity		(259)
Translation and other		(131)
Balance at the end of the period		10,107
Amount of Goodwill impairment	0
Industrial
Goodwill
Balance at the beginning of the period	2,678	2,678
Divestiture activity		(4)
Translation and other		(44)
Balance at the end of the period		2,630
Safety and Graphics
Goodwill
Balance at the beginning of the period	4,419	4,419
Acquisition activity		(16)
Divestiture activity		(8)
Translation and other		(57)
Balance at the end of the period		4,338
Health Care
Goodwill
Balance at the beginning of the period	1,682	1,682
Translation and other		(19)
Balance at the end of the period		1,663
Electronics and Energy
Goodwill
Balance at the beginning of the period	1,524	1,524
Divestiture activity		(247)
Translation and other		(10)
Balance at the end of the period		1,267
Consumer
Goodwill
Balance at the beginning of the period	$ 210	210
Translation and other		(1)
Balance at the end of the period		$ 209

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Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Acquired intangible assets disclosures
Total gross carrying amount	$ 4,314	$ 4,361
Total accumulated amortization	(2,170)	(2,073)
Total finite-lived intangible assets - net	2,144	2,288
Non-amortizable intangible assets (primarily tradenames)	643	648
Total intangible assets - net	$ 2,787	2,936
Indefinite lived tradenames years in existence	55 years
Customer related intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	$ 2,302	2,332
Total accumulated amortization	(931)	(874)
Patents
Acquired intangible assets disclosures
Total gross carrying amount	554	561
Total accumulated amortization	(491)	(489)
Other technology-based intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	578	583
Total accumulated amortization	(312)	(292)
Definite-lived tradenames
Acquired intangible assets disclosures
Total gross carrying amount	676	678
Total accumulated amortization	(272)	(256)
Other amortizable intangible assets
Acquired intangible assets disclosures
Total gross carrying amount	204	207
Total accumulated amortization	$ (164)	$ (162)

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Goodwill and Intangible Assets (Schedules for Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Finite Lived Intangible Asset
Amortization expense for acquired intangible assets	$ 63	$ 47	$ 127	$ 111
Expected amortization expense for acquired intangible assets recorded as of balance sheet date
Remainder of 2018	123		123
2019	241		241
2020	229		229
2021	220		220
2022	206		206
2023	175		175
After 2023	$ 950		$ 950

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Restructuring Actions and Exit Activities (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018 USD ($) individual	Jun. 30, 2017 USD ($) individual	Mar. 31, 2017 USD ($)
2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges	$ 105
2017 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual		1,300
Restructuring charges		$ 99
Employee-Related
Restructuring Cost and Reserve
Pre-tax charge related to exit activities			$ 24
Cost of sales | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges	12
Selling, general and administrative expenses | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges	89
Research, development and related expenses | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges	$ 4
Corporate and Unallocated | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual	900
Restructuring charges	$ 105

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Restructuring Actions and Exit Activities - Roll Forward (Details) - Employee-Related - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
2018 Restructuring Actions
Restructuring Reserve Roll Forward
Expenses incurred	$ 105
Cash payments	(6)
Restructuring actions balances, Ending Balance	99		$ 99
2017 Restructuring Actions
Restructuring Reserve Roll Forward
Restructuring actions balances, Beginning Balance			88
Expenses incurred		$ 99
Cash payments			(13)	$ (8)
Adjustments			(27)	(3)
Restructuring actions balances, Ending Balance	$ 48		$ 48	$ 88

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Supplemental Income Statement Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Supplemental Income Statement Information
Interest expense	$ 88	$ 54	$ 170	$ 99
Interest income	(16)	(12)	(37)	(20)
Pension and postretirement net periodic benefit cost (benefit)	(21)	(31)	(40)	(63)
Total	$ 51	$ 11	$ 93	$ 16

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Supplemental Equity and Comprehensive Income Information - SE Rf (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Increase (decrease) in equity
Balance at the beginning of the period	$ 11,039	$ 11,040	$ 11,622	$ 10,343
Net income	1,862	1,585	2,468	2,911
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(496)	(67)	(329)	225
Defined benefit pension and postretirement plans adjustment	114	78	230	161
Cash flow hedging instruments unrealized gain (loss)	162	(51)	101	(127)
Total other comprehensive income (loss), net of tax	(220)	(40)	2	259
Dividends declared	(802)	(701)	(1,612)	(1,403)
Stock-based compensation	54	55	(198)	183
Reacquired stock	(1,591)	(475)	(2,563)	(1,153)
Issuances pursuant to stock option and benefit plans	86	180	313	504
Balance at the end of the period	10,428	11,644	10,428	11,644
Common Stock and Additional Paid-in Capital
Increase (decrease) in equity
Balance at the beginning of the period	5,505	5,198	5,361	5,070
Other comprehensive income (loss), net of tax:
Stock-based compensation	54	55	(198)	183
Balance at the end of the period	5,559	5,253	5,559	5,253
Retained Earnings
Increase (decrease) in equity
Balance at the beginning of the period	38,453	38,094	39,115	37,907
Net income	1,857	1,583	2,459	2,906
Other comprehensive income (loss), net of tax:
Dividends declared	(802)	(701)	(1,612)	(1,403)
Issuances pursuant to stock option and benefit plans	(66)	(183)	(520)	(617)
Balance at the end of the period	39,442	38,793	39,442	38,793
Treasury Stock
Increase (decrease) in equity
Balance at the beginning of the period	(26,178)	(25,354)	(25,887)	(25,434)
Other comprehensive income (loss), net of tax:
Reacquired stock	(1,591)	(475)	(2,563)	(1,153)
Issuances pursuant to stock option and benefit plans	152	363	833	1,121
Balance at the end of the period	(27,617)	(25,466)	(27,617)	(25,466)
Accumulated Other Comprehensive Income (Loss)
Increase (decrease) in equity
Balance at the beginning of the period	(6,803)	(6,949)	(7,026)	(7,245)
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(492)	(67)	(324)	222
Defined benefit pension and postretirement plans adjustment	114	78	230	161
Cash flow hedging instruments unrealized gain (loss)	162	(51)	101	(127)
Balance at the end of the period	(7,019)	(6,989)	(7,019)	(6,989)
Noncontrolling Interest
Increase (decrease) in equity
Balance at the beginning of the period	62	51	59	45
Net income	5	2	9	5
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(4)		(5)	3
Balance at the end of the period	$ 63	$ 53	$ 63	$ 53

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Supplemental Equity and Comprehensive Income Information - AOCI rf (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to 3M, Net of Tax Roll Forward
Stockholders' Equity Attributable to 3M, Beginning Balance			$ 11,563
Other comprehensive income (loss), before tax:
Stockholders' Equity Attributable to 3M, Ending Balance	$ 10,365		10,365
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to 3M, Net of Tax Roll Forward
Stockholders' Equity Attributable to 3M, Beginning Balance	(6,803)	$ (6,949)	(7,026)	$ (7,245)
Other comprehensive income (loss), before tax:
Amounts before reclassifications	(229)	(241)	(182)	(116)
Amounts reclassified out	179	114	364	215
Total other comprehensive income (loss), before tax	(50)	(127)	182	99
Tax effect	(166)	87	(175)	157
Total other comprehensive income (loss), net of tax	(216)	(40)	7	256
Stockholders' Equity Attributable to 3M, Ending Balance	(7,019)	(6,989)	(7,019)	(6,989)
Cumulative Translation Adjustment
AOCI Attributable to 3M, Net of Tax Roll Forward
Stockholders' Equity Attributable to 3M, Beginning Balance	(1,470)	(1,719)	(1,638)	(2,008)
Other comprehensive income (loss), before tax:
Amounts before reclassifications	(411)	(167)	(282)	59
Total other comprehensive income (loss), before tax	(411)	(167)	(282)	59
Tax effect	(81)	100	(42)	163
Total other comprehensive income (loss), net of tax	(492)	(67)	(324)	222
Stockholders' Equity Attributable to 3M, Ending Balance	(1,962)	(1,786)	(1,962)	(1,786)
Gains (losses) associated with defined benefit pension and postretirement plans amortization
AOCI Attributable to 3M, Net of Tax Roll Forward
Stockholders' Equity Attributable to 3M, Beginning Balance	(5,160)	(5,245)	(5,276)	(5,328)
Other comprehensive income (loss), before tax:
Amounts reclassified out	151	119	302	238
Total other comprehensive income (loss), before tax	151	119	302	238
Tax effect	(37)	(41)	(72)	(77)
Total other comprehensive income (loss), net of tax	114	78	230	161
Stockholders' Equity Attributable to 3M, Ending Balance	(5,046)	(5,167)	(5,046)	(5,167)
Cash flow hedging instruments gains (losses)
AOCI Attributable to 3M, Net of Tax Roll Forward
Stockholders' Equity Attributable to 3M, Beginning Balance	(173)	15	(112)	91
Other comprehensive income (loss), before tax:
Amounts before reclassifications	182	(74)	100	(175)
Amounts reclassified out	28	(5)	62	(23)
Total other comprehensive income (loss), before tax	210	(79)	162	(198)
Tax effect	(48)	28	(61)	71
Total other comprehensive income (loss), net of tax	162	(51)	101	(127)
Stockholders' Equity Attributable to 3M, Ending Balance	$ (11)	$ (36)	$ (11)	$ (36)

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Supplemental Equity and Comprehensive Income Information - Reclass AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Amount Reclassified from Accumulated Other Comprehensive Income
Net of tax	$ (135)	$ (75)	$ (277)	$ (146)
Gains (losses) associated with defined benefit pension and postretirement plans amortization
Amount Reclassified from Accumulated Other Comprehensive Income
Prior service benefit	19	22	38	44
Net actuarial loss	(170)	(141)	(340)	(282)
Total before tax	(151)	(119)	(302)	(238)
Tax effect	37	41	72	77
Net of tax	(114)	(78)	(230)	(161)
Cash flow hedging instruments gains (losses)
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	(28)	5	(62)	23
Tax effect	7	(2)	15	(8)
Net of tax	(21)	3	(47)	15
Cash flow hedging instruments gains (losses) | Foreign currency forward/option contracts
Amount Reclassified from Accumulated Other Comprehensive Income
Cost of sales	(27)	$ 5	(61)	$ 23
Cash flow hedging instruments gains (losses) | Interest rate swap contracts
Amount Reclassified from Accumulated Other Comprehensive Income
Cost of sales	$ (1)		$ (1)

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Income Taxes - Tax Effected Operating Loss, Capital Loss, and Tax Credit Carryovers (Details) - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income tax
Net UTB impacting the effective tax rate	$ 493,000,000		$ 526,000,000		$ 493,000,000		$ 526,000,000
Interest and penalties related to unrecognized tax benefits, expense (benefit) recognized on a gross basis	(6,000,000)			$ 5,000,000	3,000,000	$ 8,000,000
Interest and penalties related to unrecognized tax benefits, accrued on a gross basis	60,000,000		68,000,000		60,000,000		68,000,000
Deferred Tax Assets, Valuation Allowance	$ 83,000,000		81,000,000		$ 83,000,000		$ 81,000,000
Effective tax rate (as a percent)	20.80%			26.00%	25.60%	25.00%
Increase (decrease) in effective income tax rate from prior reporting period to current reporting period (as a percent)	(5.20%)				0.60%
Statutory U.S. tax rate					21.00%		35.00%
Provisional income tax expense (benefit) from enactment of Tax Cuts and Jobs Act of 2017	$ 0	$ 217,000,000	762,000,000
Provisional transition tax expense (benefit) for accumulated foreign earnings from enactment of Tax Cuts and Jobs Act of 2017	0	132,000,000	745,000,000
Provisional expense (benefit) from remeasurement of deferred tax assets and liabilities due to change in tax rate from enactment of Tax Cuts and Jobs Act of 2017	0	$ 85,000,000	$ 17,000,000
Period of time over which TCJA transition tax on certain unrepatriated earnings of foreign subsidiaries may be paid					8 years
Tax Cuts and Jobs Act of 2017 transition tax in current accrued income taxes payable	74,000,000				$ 74,000,000
Tax Cuts and Jobs Act of 2017 transition tax long term income taxes payable	$ 733,000,000				$ 733,000,000

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Marketable Securities (current and non-current) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Marketable Securities
Current marketable securities	$ 385	$ 1,076
Non-current marketable securities	26	27
Total marketable securities	411	1,103
Corporate debt securities
Marketable Securities
Current marketable securities		14
Commercial paper
Marketable Securities
Current marketable securities	347	899
Certificates of deposit/time deposits
Marketable Securities
Current marketable securities	31	76
U.S. municipal securities
Marketable Securities
Current marketable securities	4	3
Non-current marketable securities	26	27
Asset-backed securities total
Marketable Securities
Current marketable securities	3	84
Asset-backed securities Automobile loan related
Marketable Securities
Current marketable securities	$ 3	16
Asset-backed securities Credit card related
Marketable Securities
Current marketable securities		$ 68

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Marketable Securities (Contractual maturity) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Marketable securities by contractual maturity
Due in one year or less	$ 382
Due after one year through five years	15
Due after five years through ten years	14
Total marketable securities	$ 411	$ 1,103

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Long-Term Debt and Short-Term Borrowings - Short-Term Borrowings and Current Portion of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Short-Term Borrowings and Current Portion of Long-Term Debt
Short-term borrowings and current portion of long-term debt	$ 3,225	$ 1,853
Commercial paper
Short-Term Borrowings and Current Portion of Long-Term Debt
Short-term borrowings and current portion of long-term debt	$ 1,500	$ 745

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Pension and Postretirement Benefit Plans - Narrative (Details) - Funded $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Company contributions year to date	$ 259
Qualified and Non-qualified Pension Benefits | Maximum
Benefit Plan Information
Estimated pension and postretirement employer contributions in current fiscal year	500
Qualified and Non-qualified Pension Benefits | Minimum
Benefit Plan Information
Estimated pension and postretirement employer contributions in current fiscal year	300
Postretirement Benefits
Benefit Plan Information
Company contributions year to date	$ 2

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Pension and Postretirement Benefit Plans - Components of net periodic benefit cost and other information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net periodic benefit cost (benefit)
Net periodic benefit cost (benefit)	$ (21)	$ (31)	$ (40)	$ (63)
Funded | Postretirement Benefits
Net periodic benefit cost (benefit)
Service cost	13	12	26	25
Interest cost	20	20	40	39
Expected return on plan assets	(21)	(21)	(42)	(42)
Amortization of prior service benefit	(10)	(13)	(20)	(26)
Amortization of net actuarial loss	15	14	30	28
Total non-operating expense (benefit)	4		8	(1)
Net periodic benefit cost (benefit)	17	12	34	24
Funded | United States | Qualified and Non-qualified Pension Benefits
Net periodic benefit cost (benefit)
Service cost	72	67	144	134
Interest cost	141	142	282	284
Expected return on plan assets	(272)	(259)	(544)	(518)
Amortization of prior service benefit	(6)	(6)	(12)	(12)
Amortization of net actuarial loss	126	97	252	194
Total non-operating expense (benefit)	(11)	(26)	(22)	(52)
Net periodic benefit cost (benefit)	61	41	122	82
Funded | International | Qualified and Non-qualified Pension Benefits
Net periodic benefit cost (benefit)
Service cost	37	34	73	67
Interest cost	40	37	80	74
Expected return on plan assets	(79)	(69)	(157)	(138)
Amortization of prior service benefit	(3)	(3)	(6)	(6)
Amortization of net actuarial loss	29	30	58	60
Total non-operating expense (benefit)	(13)	(5)	(25)	(10)
Net periodic benefit cost (benefit)	$ 24	$ 29	$ 48	$ 57

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Derivatives - Cash Flow Hedges (Details) - Cash flow hedge - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative	$ 182	$ (74)	$ 100	$ (175)
Pretax gain (loss) recognized in income on effective portion of derivative as a result of reclassification from accumulated other comprehensive income	(28)	5	(62)	23
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	(11)		(11)
After-tax net unrealized gain (loss) anticipated to be reclassified from AOCI to the income statement within next twelve months			(15)
After-tax net unrealized gain (loss) anticipated to be reclassified from AOCI to the Income Statement over remaining fiscal year			(20)
After-tax net unrealized gain (loss) anticipated to be reclassified from AOCI to the Income Statement in 2019			10
After-tax unrealized gain (loss) anticipated to be reclassified from AOCI to the Income Statement after 2019			$ (1)
Foreign currency forward/option contracts
Derivatives in Cash Flow Hedging Relationships
Maximum length of time hedged in cash flow hedge			36 months
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative	179	(72)	$ 100	(172)
Foreign currency forward/option contracts | Cost of sales
Derivatives in Cash Flow Hedging Relationships
Pretax gain (loss) recognized in income on effective portion of derivative as a result of reclassification from accumulated other comprehensive income	(27)	5	(61)	23
Interest rate swap contracts
Derivatives in Cash Flow Hedging Relationships
Derivative notional amount	500		500
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative	3	$ (2)		$ (3)
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	(9)		(9)
Interest rate swap contracts | Interest expense.
Derivatives in Cash Flow Hedging Relationships
Pretax gain (loss) recognized in income on effective portion of derivative as a result of reclassification from accumulated other comprehensive income	$ (1)		$ (1)

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Derivatives - Fair Value Hedges (Details) - Fair value hedges - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives in Fair Value Hedging Relationships
Gain (Loss) on Derivative Recognized in income	$ (1)	$ 1	$ (12)	$ (4)
Gain (Loss) on Hedged Item Recognized in Income	1	(1)	12	4
Interest rate swap contracts | Interest expense.
Derivatives in Fair Value Hedging Relationships
Gain (Loss) on Derivative Recognized in income	(1)	1	(12)	(4)
Gain (Loss) on Hedged Item Recognized in Income	$ 1	$ (1)	$ 12	$ 4

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Derivatives - Net Investment Hedges (Details) - Net Investment Hedges € in Millions, $ in Millions, ₩ in Billions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 KRW (₩)	Jun. 30, 2018 EUR (€)	Mar. 31, 2018 EUR (€)
Net investment hedges
Effective portion of net investment hedge reclassified out of other comprehensive income into income	$ 0	$ 0	$ 0	$ 0
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument	322	(277)	188	(418)
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income	1	3	(2)	5
Foreign currency forward contracts
Net investment hedges
Derivative notional amount					₩ 248	€ 150
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument	23	(7)	17	(27)
Foreign currency forward contracts | Cost of sales
Net investment hedges
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income	1	3		5
Foreign Currency Denominated Debt
Net investment hedges
Face amount of debt dedesignated as a net investment hedge | €							€ 300
Face amount of debt designated as a net investment hedge | €						€ 4,100
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument	$ 299	$ (270)	171	$ (391)
Foreign Currency Denominated Debt | Cost of sales
Net investment hedges
Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income			$ (2)

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Derivatives - Not Designated (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ (111)	$ (132)	$ (91)	$ (91)
Foreign currency forward/option contracts | Cost of sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	3	6		5
Foreign currency forward contracts | Interest expense.
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ (114)	$ (138)	$ (91)	$ (96)

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Derivatives - BS Location (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	$ 130	$ 78
Fair Value of Derivative Instruments, Liabilities	117	197
Derivatives designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	108	48
Fair Value of Derivative Instruments, Liabilities	51	172
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	46	7
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	42	20
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	21	109
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Other liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	13	56
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	2,054	2,204
Derivatives designated as hedging instruments | Foreign currency forward/option contracts | Noncurrent balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	1,264	1,392
Derivatives designated as hedging instruments | Interest rate swap contracts | Other assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	20	21
Derivatives designated as hedging instruments | Interest rate swap contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	7	1
Derivatives designated as hedging instruments | Interest rate swap contracts | Other liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	10	6
Derivatives designated as hedging instruments | Interest rate swap contracts | Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	1,350	450
Derivatives designated as hedging instruments | Interest rate swap contracts | Noncurrent balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	1,103	1,503
Derivatives not designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	22	30
Fair Value of Derivative Instruments, Liabilities	66	25
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	22	30
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	66	25
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	$ 3,834	$ 4,974

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Derivatives - Offsetting Assets (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($) Counterparty	Dec. 31, 2017 USD ($)
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties
Number of master netting agreements supported by primary counterparty's parent guarantee | Counterparty	17
Number of credit support agreements by primary counterparty | Counterparty	16
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	$ 130	$ 78
Net Amounts of Derivative Assets	71	51
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	130	78
Gross Amount of Eligible Offsetting Recognized Derivative Liabilities	59	27
Net Amounts of Derivative Assets	$ 71	$ 51

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Derivatives - Offsetting Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	$ 117	$ 197
Net Amount of Derivative Liabilities	58	170
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	115	197
Gross Amount of Eligible Offsetting Recognized Derivative Assets	59	27
Net Amount of Derivative Liabilities	56	$ 170
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	2
Net Amount of Derivative Liabilities	$ 2

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Derivatives - Currency Effects (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Foreign Currency
Year-on-year foreign currency transaction effects, including hedging impact, gain (loss) impact on pre-tax income	$ (27)	$ (91)

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Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	$ 411	$ 1,103
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	130	78
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	117	197
Fair value on a recurring basis | Foreign currency forward/option contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	110	57
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	100	190
Fair value on a recurring basis | Interest rate swap contracts
Assets and Liabilities Measured on Recurring Basis
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	20	21
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	17	7
Fair value on a recurring basis | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities		14
Fair value on a recurring basis | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	347	899
Fair value on a recurring basis | Certificates of deposit/time deposits
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	31	76
Fair value on a recurring basis | Asset-backed securities Automobile loan related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	3	16
Fair value on a recurring basis | Asset-backed securities Credit card related
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities		68
Fair value on a recurring basis | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	30	30
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	110	57
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	100	190
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	20	21
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	17	7
Fair value on a recurring basis | Level 2 | Corporate debt securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities		14
Fair value on a recurring basis | Level 2 | Commercial paper
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	347	899
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	31	76
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	3	16
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		68
Fair value on a recurring basis | Level 3 | U.S. municipal securities
Assets and Liabilities Measured on Recurring Basis
Available-for-sale marketable securities	$ 30	$ 30

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Fair Value Measurements - Recurring Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
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	$ 30	$ 20	$ 30	$ 20
Total gains or losses included in earnings	0	0	0	0
Total gains or losses included in other comprehensive income	0	0	0	0
Purchases and issuances	0	0	0	0
Sales and settlements	0	0	0	0
Transfers in and/or out of Level 3	0	0	0	0
Balance at the end of the period	$ 30	$ 20	$ 30	$ 20

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Fair Value Measurements - Nonrecurring (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Electronics and Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived asset impairment charges	$ 40

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Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Carrying Value
Financial Instruments
Long-term debt, excluding current portion - Fair Value	$ 11,294	$ 12,096
Fair Value
Financial Instruments
Long-term debt, excluding current portion - Fair Value	$ 11,474	$ 12,535

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Commitments and Contingencies - Respirator and Environmental (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($) individual lawsuit case defendant plan claim item	Dec. 31, 2017 item
Respirator Mask/Asbestos Litigation
Loss contingencies
Total number of named claimants	2,260	2,230
Number of total claims the Company prevailed after being taken to trial | claim	13
Number of total claims taken to trial | claim	14
Number of total claims settled and tried to verdict | claim	11
Number of total claims tried to verdict | claim	12
Increase in liabilities | $	$ 56,000
Payments for fees and settlements related to litigation | $	33,000
Insurance receivables | $	$ 4,000
Respirator Mask/Asbestos Litigation | State court of Kentucky
Loss contingencies
Number of additional defendants	two
Litigation settlement awarded | $	$ 2,000
Amount of punitive damages awarded | $	$ 63,000
Respirator Mask/Asbestos Litigation - State of West Virginia
Loss contingencies
Number of additional defendants	2
Accrued loss contingency reserve | $	$ 0
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies
Loss contingencies
Accrued loss contingency reserve | $	631,000
Respirator Mask/Asbestos Litigation - Aearo Technologies
Loss contingencies
Accrued loss contingency reserve | $	29,000
Quarterly fee paid to Cabot to retain responsibility and liability for products manufactured before July 11, 1995 | $	100
Environmental Matters - Remediation
Loss contingencies
Accrued loss contingency reserve | $	30,000
Insurance receivables | $	$ 8,000
Number of years remediation payments expected to be paid for applicable sites	20 years
Environmental Matters - Regulatory Activities
Loss contingencies
Number of years after phase-out decision in May 2000 that the Company stopped manufacturing and using vast majority of perfluorooctanyl compounds	2 years
Amount of PFOA and PFOS found in drinking water, either individually or combined, that are allowed per the EPA's announced lifetime health advisory levels in parts per trillion	70
Amount of PFOA in drinking water allowed per provisional health advisories in parts per trillion (superseded)	400
Amount of PFOS in drinking water allowed per provisional health advisories in parts per trillion (superseded)	200
Number of PFAS the EPA has required to have public water system suppliers monitor	6
Number of EPA announced plans Regarding PFAS | plan	4
Number of days the U.S. Agency for Toxic Substances and Disease Registry extended the comment period for a draft Toxicological Profile for PFAS for public review and comment	60 days
Number of public water supplies the EPA reported results	4,920
Number of water supplies that reported above advisory level with PFOA	13
Number of water supplies that reported above advisory level with PFOS	46
Number of water supplies that reported above advisory level with both PFOA and PFOS under technical advisory issued by EPA in September 2016	65
Environmental Matters - Regulatory Activities | Minimum
Loss contingencies
Number of water supply samples used to test for PFOA and PFOS under the EPA lifetime health advisory program	1
Environmental Matters - Regulatory Activities | Alabama
Loss contingencies
Number of years covered by permit for sludge containing PFAS	20 years
Environmental Matters - Regulatory Activities | Minnesota Department of Health
Loss contingencies
Amount of PFOA in drinking water allowed per Minnesota Department of Health in parts per trillion	35
Amount of PFOS in drinking water allowed per Minnesota Department of Health in parts per trillion	27
Amount of PFBS in drinking water allowed per Minnesota Department of Health in parts per billion	2
Environmental Matters - Litigation | State Court of Lawrence County, Alabama
Loss contingencies
Total number of named claimants	200
Environmental Matters - Litigation | U.S. District Court for the Northern District of Alabama
Loss contingencies
Number of unnamed defendant | defendant	3
Environmental Matters - Litigation | Alabama
Loss contingencies
Number of local water works for whom the water authority supplies water	5
Environmental Matters - Litigation | Morgan County, Alabama
Loss contingencies
Total number of named claimants	3
Environmental Matters - Litigation | Minnesota
Loss contingencies
Litigation settlement awarded | $	$ 897,000
Settlement amount paid as grant | $	850,000
Amount the State's damages expert contended that the State incurred in damages | $	5,000,000
Environmental Matters - Other Environmental Litigation
Loss contingencies
Accrued loss contingency reserve | $	$ 59,000
Number of former disposal sites with PFAS present in the soil and groundwater in Washington County, Minnesota	2
Environmental Matters - Other Environmental Litigation | Maximum
Loss contingencies
Number of years remediation payments expected to be paid for applicable sites	4 years
Environmental Matters - Aqueous Film Forming Foam Litigation
Loss contingencies
Number of putative class action and other lawsuits	70
Environmental Matters - Other PFAS-related Environmental Litigation
Loss contingencies
Total number of named claimants | individual	8
Number of lawsuits filed | case	4
Environmental Matters - Other PFAS-related Environmental Litigation | U.S. District Court of New York State
Loss contingencies
Number of lawsuits filed | lawsuit	3

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Commitments and Contingencies - Product Liability (Details) - Product liability - Bair Hugger	6 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($) case item	Dec. 31, 2017 item
Product Liability Litigation
Number of plaintiffs	4,626	4,270
Accrued loss contingency reserve | $	$ 0
Number of total claims dismissed | case	61
U.S. District Court for the Western District of Tennessee
Product Liability Litigation
Number of lawsuits filed	1

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Stock-Based Compensation (Details)	6 Months Ended
	Jun. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award Activity
Retirement age eligibility for employees	55 years
Retirement eligibility for employees, minimum years of service required	10 years
Percent of stock-based compensation related to retiree-eligible population (as a percent)	38.00%
Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award Activity
Number of shares authorized	123,965,000
Number of shares available for grant	26,100,000

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Stock-Based Compensation - Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Amounts recognized in the financial statements
Stock-based compensation programs expense	$ 49	$ 59	$ 208	$ 206
Income tax benefits	(19)	(74)	(117)	(222)
Stock-based compensation expenses (benefits), net of tax	30	(15)	91	(16)
Cost of sales
Amounts recognized in the financial statements
Stock-based compensation programs expense	9	9	32	32
Selling, general and administrative expenses
Amounts recognized in the financial statements
Stock-based compensation programs expense	33	43	142	141
Research, development and related expenses
Amounts recognized in the financial statements
Stock-based compensation programs expense	$ 7	$ 7	$ 34	$ 33

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Stock-Based Compensation - Stock Options (Details) - Stock Options - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Stock Option Program
Balance at the beginning of the period	34,965
Granted - Annual	3,174
Exercised	(2,378)
Forfeited	(73)
Balance at the end of the period	35,688
Options exercisable	27,222
Options exercisable, exercise price	$ 120.84
Weighted average exercise price - Beginning balance	125.73
Weighted average exercise price - Granted - Annual	233.62
Weighted average exercise price - Exercised	89.67
Weighted average exercise price - Canceled	186.24
Weighted average exercise price - Ending balance	$ 137.60
Weighted average remaining contractual life for options outstanding	71 months
Weighted average remaining contractual life for options exercisable	60 months
Aggregate intrinsic value for options outstanding	$ 2,226
Aggregate intrinsic value for options exercisable	$ 2,066
Expiration of annual grants	10 years
Compensation expense yet to be recognized	$ 102
Expense recognition period	23 months
Total intrinsic value of stock options exercised	$ 345	$ 465
Cash received from options exercised	212	416
Tax benefit realized from exercise of stock options	$ 73	$ 158
Share- based compensation assumptions
Weighted average exercise price	$ 233.63
Risk-free interest rate (as a percent)	2.70%
Dividend yield (as a percent)	2.40%
Expected volatility (as a percent)	21.00%
Expected life	78 months
Black-Scholes fair value	$ 41.59
Maximum
Stock Option Program
Vesting period	3 years
Minimum
Stock Option Program
Vesting period	1 year

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Stock-Based Compensation - RSU, RS, Performance Shares (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Restricted Stock and Restricted Stock Units
Unit and Shares Activity:
Number of Shares - Nonvested - Beginning balance	1,994
Number of Shares - Granted - Annual	467
Number of Shares - Granted - Other	3
Number of Shares - Vested	(632)
Number of Shares - Forfeited	(22)
Number of Shares - Nonvested - Ending balance	1,810
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	$ 162.60
Weighted Average Grant Date Fair Value - Granted - Annual	233.61
Weighted Average Grant Date Fair Value - Granted - Other	209.26
Weighted Average Grant Date Fair Value - Vested	164.37
Weighted Average Grant Date Fair Value - Forfeited	177.93
Weighted Average Grant Date Fair Value - Nonvested - Ending balance	$ 180.22
Compensation expense yet to be recognized	$ 110
Expense recognition period	24 months
Fair value that vested	$ 154	$ 134
Tax benefit realized from vesting	$ 29	44
Vesting or performance period	3 years
Value of dividend equivalents for restricted stock units that are forfeited	$ 0
Impact on basic earnings per share due to restricted stock units dividends	$ 0
Performance Shares
Unit and Shares Activity:
Number of Shares - Nonvested - Beginning balance	686
Number of Shares - Granted - Annual	156
Number of Shares - Vested	(206)
Number of Shares - Performance Change	2
Number of Shares - Forfeited	(11)
Number of Shares - Nonvested - Ending balance	627
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	$ 171.90
Weighted Average Grant Date Fair Value - Granted - Annual	231.34
Weighted Average Grant Date Fair Value - Vested	159.82
Weighted Average Grant Date Fair Value - Performance Change	249.07
Weighted Average Grant Date Fair Value - Forfeited	194.69
Weighted Average Grant Date Fair Value - Nonvested - Ending balance	$ 190.52
Compensation expense yet to be recognized	$ 43
Expense recognition period	11 months
Fair value that vested	$ 48	55
Tax benefit realized from vesting	$ 11	$ 15
Vesting or performance period	3 years
Performance shares awarded at estimated number of shares at the end of the performance period	100.00%
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Expense recognition period	3 years
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions	200.00%
Performance Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Expense recognition period	1 year
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions	0.00%

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Business Segments (Details)	6 Months Ended
	Jun. 30, 2018 segment
Business Segments
Number of business segments	5
Percentage of net sales for countries that centralized sales districts to overall international net sales	70.00%

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Business Segments - Segment information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Business Segment Information
Net sales	$ 8,390	$ 7,810	$ 16,668	$ 15,495
Operating Income	2,401	2,153	3,408	3,895
Assets	36,778		36,778		$ 37,987
Depreciation and amortization			762	818
Capital expenditures			669	589
Business Segments. | Industrial
Business Segment Information
Net sales	3,148	2,946	6,292	5,882
Operating Income	724	568	1,443	1,238
Business Segments. | Safety and Graphics
Business Segment Information
Net sales	1,815	1,569	3,598	3,119
Operating Income	480	851	963	1,250
Business Segments. | Health Care
Business Segment Information
Net sales	1,520	1,449	3,056	2,884
Operating Income	435	408	895	837
Business Segments. | Electronics and Energy
Business Segment Information
Net sales	1,337	1,290	2,687	2,581
Operating Income	865	325	1,202	581
Business Segments. | Consumer
Business Segment Information
Net sales	1,223	1,169	2,350	2,242
Operating Income	261	198	479	421
Corporate and Unallocated
Business Segment Information
Net sales	12	2	12	3
Operating Income	(206)	(51)	(1,252)	(144)
Elimination of Dual Credit
Business Segment Information
Net sales	(665)	(615)	(1,327)	(1,216)
Operating Income	$ (158)	$ (146)	$ (322)	$ (288)