3M (MMM) 10-Q 31 Jul 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014
Document and Entity Information [Abstract]	'
Entity Registrant Name	'3M CO
Entity Central Index Key	'0000066740
Document Type	'10-Q
Document Period End Date	30-Jun-14
Amendment Flag	'false
Current Fiscal Year End Date	'--12-31
Entity Voluntary Filers	'No
Entity Current Reporting Status	'Yes
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	647,969,147
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q2

Consolidated_Statement_of_Inco

Consolidated Statement of Income (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net sales	$8,134	$7,752	$15,965	$15,386
Operating expenses	'	'	'	'
Cost of sales	4,184	4,013	8,215	7,982
Selling, general and administrative expenses	1,646	1,610	3,278	3,199
Research, development and related expenses	448	427	900	857
Total operating expenses	6,278	6,050	12,393	12,038
Operating income	1,856	1,702	3,572	3,348
Interest expense and income	'	'	'	'
Interest expense	45	41	82	80
Interest income	-9	-10	-18	-20
Total interest expense - net	36	31	64	60
Income before income taxes	1,820	1,671	3,508	3,288
Provision for income taxes	537	458	1,000	928
Net income including noncontrolling interest	1,283	1,213	2,508	2,360
Less: Net income attributable to noncontrolling interest	16	16	34	34
Net income attributable to 3M	$1,267	$1,197	$2,474	$2,326
Weighted average 3M common shares outstanding - basic (in shares)	652	688.2	656.7	689.6
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$1.94	$1.74	$3.77	$3.37
Weighted average 3M common shares outstanding - diluted (in shares)	664.6	699.1	669.6	700.6
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$1.91	$1.71	$3.70	$3.32
Cash dividends paid per 3M common share (in dollars per share)	$0.86	$0.64	$1.71	$1.27

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income including noncontrolling interest	$1,283	$1,213	$2,508	$2,360
Other comprehensive income (loss), net of tax:	'	'	'	'
Cumulative translation adjustment	127	-279	147	-677
Defined benefit pension and postretirement plans adjustment	60	91	121	176
Debt and equity securities - unrealized gain (loss)	1	-4	2	-4
Cash flow hedging instruments - unrealized gain (loss)	-9	8	-7	32
Total other comprehensive income (loss), net of tax	179	-184	263	-473
Comprehensive income (loss) including noncontrolling interest	1,462	1,029	2,771	1,887
Comprehensive (income) loss attributable to noncontrolling interest	-20	3	-50	23
Comprehensive income (loss) attributable to 3M	$1,442	$1,032	$2,721	$1,910

Consolidated_Balance_Sheet

Consolidated Balance Sheet (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$2,125	$2,581
Marketable securities - current	884	756
Accounts receivable - net	4,759	4,253
Inventories	'	'
Finished goods	1,898	1,790
Work in process	1,220	1,139
Raw materials and supplies	975	935
Total inventories	4,093	3,864
Other current assets	1,332	1,279
Total current assets	13,193	12,733
Marketable securities - non-current	1,204	1,453
Investments	113	122
Property, plant and equipment	23,447	23,068
Less: Accumulated depreciation	-14,762	-14,416
Property, plant and equipment - net	8,685	8,652
Goodwill	7,422	7,345
Intangible assets - net	1,603	1,688
Prepaid pension benefits	672	577
Other assets	1,078	980
Total assets	33,970	33,550
Current liabilities	'	'
Short-term borrowings and current portion of long-term debt	1,650	1,683
Accounts payable	1,844	1,799
Accrued payroll	656	708
Accrued income taxes	478	417
Other current liabilities	2,412	2,891
Total current liabilities	7,040	7,498
Long-term debt	5,323	4,326
Pension and postretirement benefits	1,829	1,794
Other liabilities	1,932	1,984
Total liabilities	16,124	15,602
Commitments and contingencies (Note 11)	'	'
3M Company shareholders' equity:	'	'
Common stock par value, $.01 par value, 944,033,056 shared issued	9	9
Additional paid-in capital	4,641	4,375
Retained earnings	33,836	32,416
Treasury stock, at cost: 296,063,909 shares at June 30, 2014; 280,736,817 shares at December 31, 2013	-17,466	-15,385
Accumulated other comprehensive income (loss)	-3,666	-3,913
Total 3M Company shareholders' equity	17,354	17,502
Noncontrolling interest	492	446
Total equity	17,846	17,948
Total liabilities and equity	$33,970	$33,550

Consolidated_Balance_Sheet_Par

Consolidated Balance Sheet (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
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)	296,063,909	280,736,817

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (Parenthetical) (USD $)	1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013
Consolidated Statement of Changes in Equity	'	'
Dividends declared in current period (in dollars per share)	$0.86	$3.40

Supplemental_Share_Information

Supplemental Share Information	Jun. 30, 2014	Dec. 31, 2013
Supplemental Share Information Treasury Stock RollForward	'	'
Treasury Stock, Shares, Beginning Balance	296,063,909	280,736,817
Treasury Stock, Shares, Ending Balance	296,063,909	280,736,817

Consolidated_Statement_of_Cash

Consolidated Statement of Cash Flows (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities	'	'
Net income including noncontrolling interest	$2,508	$2,360
Adjustments to reconcile net income including noncontrolling interest to net cash provided by operating activities	'	'
Depreciation and amortization	708	671
Company pension and postretirement contributions	-77	-171
Company pension and postretirement expense	196	275
Stock-based compensation expense	174	150
Deferred income taxes	-36	37
Excess tax benefits from stock-based compensation	-97	-51
Changes in assets and liabilities	'	'
Accounts receivable	-484	-628
Inventories	-242	-167
Accounts payable	57	199
Accrued income taxes (current and long-term)	16	166
Product and other insurance receivables and claims	13	19
Other - net	-4	-187
Net cash provided by operating activities	2,732	2,673
Cash Flows from Investing Activities	'	'
Purchases of property, plant and equipment (PP&E)	-634	-718
Proceeds from sale of PP&E and other assets	38	18
Acquisitions, net of cash acquired	-94	0
Purchases of marketable securities and investments	-849	-3,000
Proceeds from maturities and sale of marketable securities and investments	982	2,948
Proceeds from sale of businesses	0	8
Other investing	-22	4
Net cash used in investing activities	-579	-740
Cash Flows from Financing Activities	'	'
Change in short-term debt - net	62	-12
Repayment of debt (maturities greater than 90 days)	-119	-12
Proceeds from debt (maturities greater than 90 days)	1,078	11
Purchases of treasury stock	-3,134	-1,995
Proceeds from issuance of treasury stock pursuant to stock option and benefit plans	585	1,103
Dividends paid to shareholders	-1,122	-876
Excess tax benefits from stock-based compensation	97	51
Other - net	-31	3
Net cash used in financing activities	-2,584	-1,727
Effect of exchange rate changes on cash and cash equivalents	-25	-147
Net increase (decrease) in cash and cash equivalents	-456	59
Cash and cash equivalents at beginning of year	2,581	2,883
Cash and cash equivalents at end of period	$2,125	$2,942

Significant_Accounting_Policie

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Significant Accounting Policies	'
Significant Accounting Policies	'
	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.
	As described in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 Annual Report on Form 10-K) and 3M's Quarterly Report on Form 10-Q for the period ended March 31, 2014, effective in the first quarter of 2014, the Company transferred a product line between divisions within different business segments and made other changes within business segments in its continuing effort to improve the alignment of its businesses around markets and customers (refer to Note 13 herein). Segment information presented herein reflects the impact of these changes for all periods presented. 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 15, 2014.
	Also, effective in the second quarter of 2014, within the Electronics and Energy business segment, 3M combined three existing divisions into two new divisions. A large portion of both the Electronics Markets Materials Division and the Electronic Solutions Division were combined to form the Electronics Materials Solutions Division, which focuses on semiconductor and electronics materials and assembly solutions. The Optical Systems Division, the remaining portion of the Electronic Solutions Division and a portion of the Electronics Markets Materials Division were combined to form the Display Materials and Systems Division, which focuses on delivering light, color and user interface solutions.
	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.
	Although local currencies are typically considered as the functional currencies outside the United States, under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, the reporting currency of a foreign entity's parent is assumed to be that entity's functional currency when the economic environment of a foreign entity is highly inflationary—generally when its cumulative inflation is approximately 100 percent or more for the three years that precede the beginning of a reporting period. 3M has a subsidiary in Venezuela with operating income representing less than 1.0 percent of 3M's consolidated operating income for 2013. 3M has determined that the cumulative inflation rate of Venezuela has exceeded, and continues to exceed, 100 percent since November 2009. Accordingly, since January 1, 2010, the financial statements of the Venezuelan subsidiary have been remeasured as if its functional currency were that of its parent.
	The Venezuelan government sets official rates of exchange and conditions precedent to purchase foreign currency at these rates with local currency. Such rates and conditions are subject to change. For the periods presented through January 2013, this rate was set under the Transaction System for Foreign Currency Denominated Securities (SITME). In February 2013, the Venezuelan government announced a devaluation of its currency and the elimination of the SITME market. As a result, the official exchange rate controlled by the Commission for the Administration of Foreign Exchange (CADIVI) changed to a rate less favorable than the previous SITME rate.
	In January 2014, the Venezuelan government announced that a new agency, the National Center for Foreign Commerce (CENCOEX), had assumed the previous role of CADIVI with respect to the continuation of the existing official exchange rate; significantly expanded the use of a second foreign exchange mechanism called the Complementary System for Foreign Currency Acquirement (or SICAD1); and issued exchange regulations indicating the SICAD1 rate of exchange would be used for payments related to international investments. The SICAD1 exchange mechanism, a complementary currency auction system, had previously been created for purchases of foreign currency by only certain eligible importers and tourists. The government had begun publishing the SICAD1 rate resulting from currency auctions in December 2013. In late March 2014, the Venezuelan government launched a third foreign exchange mechanism, SICAD2, which relies on U.S. dollar cash and U.S. dollar denominated bonds offered by the Venezuelan Central Bank, PDVSA (the Venezuelan national oil and gas company) and certain private companies. SICAD2 was announced as being available to all industry sectors and that its use would not be restricted as to purpose.
	Since January 1, 2010, as discussed above, the financial statements of 3M's Venezuelan subsidiary have been remeasured as if its functional currency were that of its parent. For the periods presented, this remeasurement utilized the SITME rate through January 2013, the official CADIVI/CENCOEX rate beginning in February 2013, the SICAD1 rate beginning in March 2014, and the SICAD2 rate beginning in June 2014. 3M's use of SICAD1 and subsequently SICAD2 was based upon evaluation of a number of factors including, but not limited to, the exchange rate the Company's Venezuelan subsidiary may legally use to convert currency, settle transactions or pay dividends; the probability of accessing and obtaining currency by use of a particular rate or mechanism; and the Company's intent and ability to use a particular exchange mechanism. Other factors notwithstanding, the elimination of the SITME rate and use of the CADIVI/CENCOEX exchange rate beginning in February 2013, use of the SICAD1 rate beginning in March 2014, and use of the SICAD2 rate beginning in June 2014 did not have a material impact on 3M's consolidated results of operations or financial condition.
	The Company continues to monitor circumstances relative to its Venezuelan subsidiary. 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, 2014, the Company had a balance of net monetary liabilities denominated in VEF of less than 115 million VEF and the SICAD1 and SICAD2 exchange rates were approximately 10 VEF and 50 VEF per U.S. dollar, respectively. Had 3M utilized the SICAD1 rate rather than the SICAD2 rate of exchange for remeasurement of such items as of June 30, 2014, the differential would not have had a material impact on 3M's consolidated results of operations or financial condition.
	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 (3.1 million average options for the three months ended June 30, 2014; 2.7 million average options for the six months ended June 30, 2014; 3.7 million average options for the three months ended June 30, 2013; and 3.9 million average options for the six months ended June 30, 2013). 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)			2014		2013		2014		2013
	Numerator:
		Net income attributable to 3M		$	1,267	$	1,197	$	2,474	$	2,326
	Denominator:
		Denominator for weighted average 3M common shares
			outstanding – basic		652		688.2		656.7		689.6
		Dilution associated with the Company’s stock-based
			compensation plans		12.6		10.9		12.9		11
		Denominator for weighted average 3M common shares
			outstanding – diluted		664.6		699.1		669.6		700.6
	Earnings per share attributable to 3M common
		shareholders – basic		$	1.94	$	1.74	$	3.77	$	3.37
	Earnings per share attributable to 3M common
		shareholders – diluted		$	1.91	$	1.71	$	3.7	$	3.32
	New Accounting Pronouncements
	In March 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2013-05, Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity. This standard provides additional guidance with respect to the reclassification into income of the cumulative translation adjustment (CTA) recorded in accumulated other comprehensive income associated with a foreign entity of a parent company. The ASU differentiates between transactions occurring within a foreign entity and transactions/events affecting an investment in a foreign entity. For transactions within a foreign entity, the full CTA associated with the foreign entity would be reclassified into income only when the sale of a subsidiary or group of net assets within the foreign entity represents the substantially complete liquidation of that foreign entity. For transactions/events affecting an investment in a foreign entity (for example, control or ownership of shares in a foreign entity), the full CTA associated with the foreign entity would be reclassified into income only if the parent no longer has a controlling interest in that foreign entity as a result of the transaction/event. In addition, acquisitions of a foreign entity completed in stages will trigger release of the CTA associated with an equity method investment in that entity at the point a controlling interest in the foreign entity is obtained. For 3M, this ASU was effective prospectively beginning January 1, 2014. This ASU had no immediate impact on 3M's consolidated results of operations and financial condition as the Company had no event/transaction as described above.
	In April 2014, the FASB issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the criteria for determining which disposals can be presented as discontinued operations and modifies related disclosure requirements. This standard will have the impact of reducing the frequency of disposals reported as discontinued operations, by requiring such a disposal to represent a strategic shift that has or will have a major effect on an entity's operations and financial results. However, existing provisions that prohibit an entity from reporting a discontinued operation if it has certain continuing cash flows or involvement with the component after disposal are eliminated by this standard. The ASU also expands the disclosures for discontinued operations and requires new disclosures related to individually significant disposals that do not qualify as discontinued operations. For 3M, this ASU is effective prospectively beginning January 1, 2015. Early adoption is, however, permitted. This ASU would impact 3M's consolidated results of operations and financial condition only in the instance of a disposal as described above.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which provides a single comprehensive model to be used in the accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The standard's stated 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. To achieve this core principle the ASU includes provisions within a five step model that includes identifying the contract with a customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations, and recognizing revenue when (or as) an entity satisfies a performance obligation. The standard also specifies the accounting for some costs to obtain or fulfill a contract with a customer and requires expanded disclosures about revenue recognition. The standard provides for either full retrospective adoption or a modified retrospective adoption by which it is applied only to the most current period presented. For 3M, this ASU is effective January 1, 2017. The Company is currently assessing this ASU's impact on 3M's consolidated results of operations and financial condition.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	6 Months Ended
	Jun. 30, 2014
Acquisitions and Divestitures	'
Acquisitions and Divestitures	'
	NOTE 2. Acquisitions and Divestitures
	3M makes acquisitions of certain businesses from time to time that the Company feels align with its strategic intent with respect to, among other factors, growth markets and adjacent product lines or technologies. Goodwill resulting from business combinations is largely attributable to the existing workforce of the acquired businesses and synergies expected to arise after 3M's acquisition of these businesses. In addition to business combinations, 3M periodically acquires certain tangible and/or intangible assets and purchases interests in certain enterprises that do not otherwise qualify for accounting as business combinations. These transactions are largely reflected as additional asset purchase and investment activity.
	During the six months ended June 30, 2014, the purchase price paid for business combinations (net of cash acquired) was $94 million, which related to 3M's acquisition of Treo Solutions LLC (discussed below).
	In April 2014, 3M (Health Care Business) purchased all of the outstanding equity interests of Treo Solutions LLC, headquartered in Troy, New York. Treo Solutions LLC is a provider of data analytics and business intelligence to healthcare payers and providers. The allocation of purchase price related to this acquisition is considered preliminary, largely with respect to intangible assets, and tax-related assets and liabilities.
	Purchased identifiable finite-lived intangible assets related to the acquisition which closed in the first six months ended of 2014 totaled $34 million and will be amortized on a straight-line basis over a weighted-average life of six years (lives ranging from three to 10 years). Acquired in-process research and development and identifiable intangible assets for which significant assumed renewals or extensions of underlying arrangements impacted the determination of their useful lives were not material. Pro forma information related to acquisitions was not included because the impact on the Company's consolidated results of operations was not considered to be material.
	Refer to Note 2 in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 Annual Report on Form 10-K) for information on 3M's 2011 through 2013 acquisitions and divestitures.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2014
Goodwill and Intangible Assets	'
Goodwill and Intangible Assets	'
	NOTE 3. Goodwill and Intangible Assets
	Purchased goodwill related to the acquisition which closed during the first six months of 2014 totaled $65 million, none of which is deductible for tax purposes. 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, 2013 and June 30, 2014, are as follows:
	Goodwill
			31-Dec-13			Acquisition			Translation		30-Jun-14
	(Millions)		Balance			activity			and other		Balance
	Industrial		$	2,166		$	―		$	10	$	2,176
	Safety and Graphics			1,740			―			-2		1,738
	Electronics and Energy			1,612			―			1		1,613
	Health Care			1,596			65			1		1,662
	Consumer			231			―			2		233
	Total Company		$	7,345		$	65		$	12	$	7,422
	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 discussed in Note 13, effective in the first quarter of 2014, the Company transferred a product line between divisions within different business segments and in both the first and second quarters of 2014 made other changes within business segments in its continuing effort to improve the alignment of its businesses around markets and customers. For any product moves that resulted in reporting unit changes, the Company applied the relative fair value method to determine the impact on goodwill of the associated reporting units. During the first and second quarters of 2014, 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
	For the six months ended June 30, 2014, gross intangible assets (excluding goodwill) acquired through business combinations increased the gross carrying amount, with this impact partially offset by changes in foreign currency exchange rates. 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, 2014, and December 31, 2013, follow:
				June 30,			December 31,
	(Millions)			2014			2013
	Customer related intangible assets			$	1,409		$	1,411
	Patents				601			602
	Other technology-based intangible assets				422			406
	Definite-lived tradenames				410			411
	Other amortizable intangible assets				225			217
	Total gross carrying amount			$	3,067		$	3,047
	Accumulated amortization — customer related				-563			-514
	Accumulated amortization — patents				-474			-458
	Accumulated amortization — other technology-based				-203			-179
	Accumulated amortization — definite-lived tradenames				-187			-178
	Accumulated amortization — other				-166			-159
	Total accumulated amortization			$	-1,593		$	-1,488
		Total finite-lived intangible assets — net		$	1,474		$	1,559
	Non-amortizable intangible assets (primarily tradenames)				129			129
		Total intangible assets — net		$	1,603		$	1,688
	Amortization expense for acquired intangible assets for the three-month and six-month periods ended June 30, 2014 and 2013 follows:
			Three months ended						Six months ended
			June 30,						June 30,
	(Millions)		2014			2013			2014		2013
	Amortization expense		$	57		$	60		$	114	$	120
	The table below shows expected amortization expense for acquired amortizable intangible assets recorded as of June 30, 2014:
	(Millions)		Remainder
			of															After
			2014			2015			2016		2017		2018		2019		2019
	Amortization expense		$	109		$	206		$	193	$	177	$	160	$	148	$	481
	The 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.

Supplemental_Equity_and_Compre

Supplemental Equity and Comprehensive Income Information	6 Months Ended
	Jun. 30, 2014
Supplemental Equity and Comprehensive Income Information	'
Supplemental Equity and Comprehensive Income Information	'
	NOTE 4. Supplemental Equity and Comprehensive Income Information
	Consolidated Statement of Changes in Equity
	Three months ended June 30, 2014					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at March 31, 2014		$	17,924		$	4,554		$	33,312		$	-16,577		$	-3,841		$	476
	Net income			1,283						1,267									16
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			127												123			4
	Defined benefit pension and post-retirement
		plans adjustment		60												60			―
	Debt and equity securities - unrealized gain (loss)			1												1			―
	Cash flow hedging instruments - unrealized
		gain (loss)		-9												-9			―
	Total other comprehensive income (loss), net
		of tax		179
	Dividends declared			-556						-556
	Purchase of subsidiary shares			-5			-1												-4
	Stock-based compensation, net of tax impacts			97			97
	Reacquired stock			-1,382									-1,382
	Issuances pursuant to stock option and
		benefit plans		306						-187			493
	Balance at June 30, 2014		$	17,846		$	4,650		$	33,836		$	-17,466		$	-3,666		$	492
	Six months ended June 30, 2014					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at December 31, 2013		$	17,948		$	4,384		$	32,416		$	-15,385		$	-3,913		$	446
	Net income			2,508						2,474									34
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			147												131			16
	Defined benefit pension and post-retirement
		plans adjustment		121												121			―
	Debt and equity securities - unrealized gain (loss)			2												2			―
	Cash flow hedging instruments - unrealized
		gain (loss)		-7												-7			―
	Total other comprehensive income (loss),
		net of tax		263
	Dividends declared			-555						-555
	Purchase of subsidiary shares			-5			-1												-4
	Stock-based compensation, net of tax impacts			267			267
	Reacquired stock			-3,155									-3,155
	Issuances pursuant to stock option and
		benefit plans		575						-499			1,074
	Balance at June 30, 2014		$	17,846		$	4,650		$	33,836		$	-17,466		$	-3,666		$	492
	Three months ended June 30, 2013					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at March 31, 2013		$	18,528		$	4,188		$	31,073		$	-12,178		$	-5,001		$	446
	Net income			1,213						1,197									16
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			-279												-260			-19
	Defined benefit pension and post-retirement
		plans adjustment		91												91			―
	Debt and equity securities - unrealized gain (loss)			-4												-4			―
	Cash flow hedging instruments - unrealized
		gain (loss)		8												8			―
	Total other comprehensive income (loss), net
		of tax		-184
	Dividends declared			-436						-436
	Stock-based compensation, net of tax impacts			64			64
	Reacquired stock			-1,232									-1,232
	Issuances pursuant to stock option and
		benefit plans		366						-118			484
	Balance at June 30, 2013		$	18,319		$	4,252		$	31,716		$	-12,926		$	-5,166		$	443
	Six months ended June 30, 2013					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
Balance at December 31, 2012		$	18,040		$	4,053		$	30,679		$	-12,407		$	-4,750		$	465
Net income			2,360						2,326									34
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment			-677												-620			-57
Defined benefit pension and post-retirement
	plans adjustment		176												176			―
Debt and equity securities - unrealized gain (loss)			-4												-4			―
Cash flow hedging instruments - unrealized
	gain (loss)		32												32			―
Total other comprehensive income (loss),
	net of tax		-473
Dividends declared			-876						-876
Sale of subsidiary shares			8			7												1
Stock-based compensation, net of tax impacts			192			192
Reacquired stock			-2,039									-2,039
Issuances pursuant to stock option and
	benefit plans		1,107						-413			1,520
Balance at June 30, 2013		$	18,319		$	4,252		$	31,716		$	-12,926		$	-5,166		$	443
3M has historically declared and paid dividends in the same quarter. In December 2013, 3M's Board of Directors declared a first-quarter 2014 dividend of $0.855 per share (paid in March 2014). This reduced 3M's stockholders equity and increased other current liabilities as of December 31, 2013 by $567 million. This resulted in total year 2013 declared dividends of $3.395 per share, with $2.54 per share paid in 2013 and the additional $0.855 per share paid in March 2014.
Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component
Three months ended June 30, 2014
(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
Balance at March 31, 2014, net of tax				$	-180		$	-3,654		$	-1		$	-6		$	-3,841
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications				128			―			1			-21			108
	Amounts reclassified out				―			92			―			5			97
Total other comprehensive income (loss),
	before tax				128			92			1			-16			205
Tax effect					-5			-32			―			7			-30
Total other comprehensive income (loss),
	net of tax				123			60			1			-9			175
Balance at June 30, 2014, net of tax				$	-57		$	-3,594		$	―		$	-15		$	-3,666
Six months ended June 30, 2014
(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
Balance at December 31, 2013, net of tax				$	-188		$	-3,715		$	-2		$	-8		$	-3,913
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications				134			―			3			-12			125
	Amounts reclassified out				―			183			―			-1			182
Total other comprehensive income (loss),
	before tax				134			183			3			-13			307
Tax effect					-3			-62			-1			6			-60
Total other comprehensive income (loss),
	net of tax				131			121			2			-7			247
Balance at June 30, 2014, net of tax				$	-57		$	-3,594		$	―		$	-15		$	-3,666
Three months ended June 30, 2013
(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
Balance at March 31, 2013, net of tax				$	-130		$	-4,870		$	-2		$	1		$	-5,001
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications				-260			―			-6			-79			-345
	Amounts reclassified out				―			144			―			91			235
Total other comprehensive income (loss),
	before tax				-260			144			-6			12			-110
Tax effect					―			-53			2			-4			-55
Total other comprehensive income (loss),
	net of tax				-260			91			-4			8			-165
Balance at June 30, 2013, net of tax				$	-390		$	-4,779		$	-6		$	9		$	-5,166
Six months ended June 30, 2013
(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
Balance at December 31, 2012, net of tax				$	230		$	-4,955		$	-2		$	-23		$	-4,750
Other comprehensive income (loss),
	before tax:
	Amounts before reclassifications				-584			―			-6			-114			-704
	Amounts reclassified out				―			287			―			164			451
Total other comprehensive income (loss),
	before tax				-584			287			-6			50			-253
Tax effect					-36			-111			2			-18			-163
Total other comprehensive income (loss),
	net of tax				-620			176			-4			32			-416
Balance at June 30, 2013, net of tax				$	-390		$	-4,779		$	-6		$	9		$	-5,166
Income taxes are not provided for foreign translation relating to permanent investments in international subsidiaries, but tax effects within cumulative translation does include impacts from items such as net investment hedge transactions. Reclassification adjustments are made to avoid double counting in comprehensive income items that are also recorded as part of net income.
The previously reported before-tax amounts of other comprehensive income before reclassifications and amounts reclassified out of other comprehensive income for the three and six months ended June 30, 2013 relative to foreign currency forward contracts in the table above and below were impacted by the immaterial revisions discussed in Note 9.
Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
			Amount Reclassified from
			Accumulated Other Comprehensive Income
(Millions)		Three months ended June 30,						Six months ended June 30,						Location on Income Statement
Details about Accumulated Other Comprehensive Income Components		2014			2013			2014			2013
Gains (losses) associated with, defined benefit pension and postretirement plans amortization
	Transition asset	$	―		$	―		$	―		$	1		See Note 8
	Prior service benefit		15			20			30			40		See Note 8
	Net actuarial loss		-107			-164			-213			-328		See Note 8
Total before tax			-92			-144			-183			-287
Tax effect			32			53			62			111		Provision for income taxes
Net of tax		$	-60		$	-91		$	-121		$	-176
Debt and equity security gains (losses)
	Sales or impairments of securities	$	―		$	―		$	―		$	―		Selling, general and administrative expenses
Total before tax			―			―			―			―
Tax effect			―			―			―			―		Provision for income taxes
Net of tax		$	―		$	―		$	―		$	―
Cash flow hedging instruments gains (losses)
	Foreign currency forward/option contracts	$	-6		$	-3		$	-2		$	-9		Cost of sales
	Foreign currency forward contracts		―			-89			―			-155		Interest expense
	Commodity price swap contracts		1			1			3			―		Cost of sales
Total before tax			-5			-91			1			-164
Tax effect			2			32			―			59		Provision for income taxes
Net of tax		$	-3		$	-59		$	1		$	-105
Total reclassifications for the period, net of tax		$	-63		$	-150		$	-120		$	-281
Purchase and Sale of Subsidiary Shares
In April 2014, 3M purchased the remaining noncontrolling interest in a consolidated 3M subsidiary for an immaterial amount, which was classified as other financing activity in the consolidated statement of cash flows.
In March 2013, 3M sold shares in 3M India Limited, a subsidiary of the Company, in return for $8 million. The noncontrolling interest shares of this subsidiary trade on a public exchange in India. This sale of shares complied with an amendment to Indian securities regulations that required 3M India Limited, as a listed company, to achieve a minimum public shareholding of at least 25 percent. As a result of this transaction, 3M's ownership in 3M India Limited was reduced from 76 percent to 75 percent. The $8 million received in the first quarter of 2013 was classified as other financing activity in the consolidated statement of cash flows. Because the Company retained its controlling interest, the sales resulted in an increase in 3M Company shareholder's equity of $7 million and an increase in noncontrolling interest of $1 million.
In July 2014, 3M announced that it will acquire (via Sumitomo 3M Limited) Sumitomo Electric Industries, Ltd.'s 25 percent interest in 3M's consolidated Sumitomo 3M Limited subsidiary for 90 billion Japanese Yen (approximately $885 million at announcement date exchange rates). Upon completion of the transaction, 3M will own 100 percent of Sumitomo 3M Limited. The transaction is expected to close on September 1, 2014 and will be reflected as a financing activity in the consolidated statement of cash flows.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Taxes	'
Income Taxes	'
	NOTE 5. 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 completed its field examination of the Company's U.S. federal income tax returns for the years 2005 through 2007 in the fourth quarter of 2009. The Company protested certain IRS positions within these tax years and entered into the administrative appeals process with the IRS during the first quarter of 2010. During the first quarter of 2010, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2008 year. The Company protested certain IRS positions for 2008 and entered into the administrative appeals process with the IRS during the second quarter of 2010. During the first quarter of 2011, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2009 year. The Company protested certain IRS positions for 2009 and entered into the administrative appeals process with the IRS during the second quarter of 2011. During the first quarter of 2012, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2010 year. The Company protested certain IRS positions for 2010 and entered into the administrative appeals process with the IRS during the second quarter of 2012. In December 2012, the Company received a statutory notice of deficiency for the 2006 year. The Company filed a petition in Tax Court in the first quarter of 2013 relating to the 2006 tax year. During the first quarter of 2014, the IRS completed its field examination of the Company's U.S. federal income tax return for the 2011 and 2012 years. The Company protested certain IRS positions for 2011 and 2012 and entered into the administrative appeals process with the IRS during the first quarter of 2014.
	Currently, the Company is under examination by the IRS for its U.S. federal income tax returns for the years 2013 and 2014. It is anticipated that the IRS will complete its examination of the Company for 2013 by the end of the first quarter of 2015 and for 2014 by the end of the first quarter of 2016. As of June 30, 2014, the IRS has not proposed any significant adjustments to the Company's tax positions for which the Company is not adequately reserved.
	During the first quarter of 2010, the Company paid the agreed upon assessments for the 2005 tax year. During the second quarter of 2010, the Company paid the agreed upon assessments for the 2008 tax year. During the second quarter of 2011, the Company received a refund from the IRS for the 2004 tax year. During the first quarter of 2012, the Company paid the agreed upon assessments for the 2010 tax year. During the first quarter of 2014, the Company received refunds from the IRS for the 2005, 2007, 2008, and 2009 tax years. In addition, during the first quarter of 2014, the Company paid the agreed upon assessments for the 2011 and 2012 tax years. Payments or refunds relating to other proposed assessments arising from the 2005 through 2014 examinations may not be made until a final agreement is reached between the Company and the IRS on such assessments or upon a final resolution resulting from the administrative appeals process or judicial action. In addition to the U.S. federal examination, there is also limited audit activity in several U.S. state and foreign jurisdictions.
	3M anticipates changes to the Company's uncertain tax positions due to the closing of various audit years mentioned above. Currently, the Company is not able to reasonably estimate the amount by which the liability for unrecognized tax benefits will increase or decrease during the next 12 months as a result of the ongoing income tax authority examinations. The total amounts of unrecognized tax benefits that, if recognized, would affect the effective tax rate as of June 30, 2014 and December 31, 2013, respectively, are $202 million and $262 million.
	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 $2 million of expense and $1 million of expense for the three months ended June 30, 2014 and June 30, 2013, respectively, and approximately $13 million in benefit and $5 million of expense for the six months ended June 30, 2014 and June 30, 2013, respectively. At June 30, 2014 and December 31, 2013, accrued interest and penalties in the consolidated balance sheet on a gross basis were $45 million and $62 million, respectively. Included in these interest and penalty amounts are interest and penalties related to tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. Because of the impact of deferred tax accounting, other than interest and penalties, the disallowance of the shorter deductibility period would not affect the annual effective tax rate but would accelerate the payment of cash to the taxing authority to an earlier period.
	The effective tax rate for the second quarter of 2014 was 29.5 percent, compared to 27.4 percent in the second quarter of 2013, an increase of 2.1 percentage points. Factors that increased the Company's effective tax rate on a combined basis by 2.1 percentage points year-on-year included the 2013 restoration of tax basis on certain assets for which depreciation was previously limited, international taxes as a result of changes to the geographic mix of income before taxes, lapse of the U.S. research and development credit as of January 1, 2014, adjustments to the Company's income tax reserves, and other items.
	The effective tax rate for the first six months of 2014 was 28.5 percent, compared to 28.2 percent in the first six months of 2013, an increase of 0.3 percentage points. Factors which increased the Company's effective tax rate by 1.1 percentage points for the first six months of 2014 when compared to the same period for 2013 included the lapse of the U.S. research and development credit as of January 1, 2014, and international taxes as a result of changes to the geographic mix of income before taxes. This increase was partially offset by a 0.8 percentage point decrease as the result of adjustments to the Company's reserves and the restoration of tax basis on certain assets for which depreciation was previously limited.
	The provision for income taxes is determined using the asset and liability approach. Under this approach, deferred income taxes represent the expected future tax consequences of temporary differences between the carrying amounts and tax basis of assets and liabilities. The Company records a valuation allowance to reduce its deferred tax assets when uncertainty regarding their realizability exists. As of June 30, 2014 and December 31, 2013, the Company had valuation allowances of $28 million and $23 million on its deferred tax assets, respectively.

Marketable_Securities

Marketable Securities	6 Months Ended
	Jun. 30, 2014
Marketable Securities	'
Marketable Securities	'
	NOTE 6. Marketable Securities
	The Company invests in agency securities, corporate securities, asset-backed securities, treasury securities and other securities. The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).
				June 30,		December 31,
	(Millions)			2014		2013
	U.S. government agency securities			$	78	$	103
	Foreign government agency securities				70		30
	Corporate debt securities				182		143
	Commercial paper				―		60
	Certificates of deposit/time deposits				38		20
	U.S. municipal securities				―		2
	Asset-backed securities:
		Automobile loan related			297		287
		Credit card related			137		52
		Equipment lease related			63		30
		Other			19		29
	Asset-backed securities total				516		398
	Current marketable securities			$	884	$	756
	U.S. government agency securities			$	70	$	131
	Foreign government agency securities				50		95
	Corporate debt securities				614		638
	Certificates of deposit/time deposits				10		20
	U.S. treasury securities				49		49
	Auction rate securities				12		11
	Asset-backed securities:
		Automobile loan related			240		298
		Credit card related			85		128
		Equipment lease related			25		37
		Other			49		46
	Asset-backed securities total				399		509
	Non-current marketable securities			$	1,204	$	1,453
	Total marketable securities			$	2,088	$	2,209
	Classification of marketable securities as current or non-current is dependent upon management's intended holding period, the security's maturity date and liquidity considerations based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as non-current. At June 30, 2014, gross unrealized losses totaled approximately $1 million (pre-tax), while gross unrealized gains totaled approximately $1 million (pre-tax). At December 31, 2013, gross unrealized losses totaled approximately $5 million (pre-tax), while gross unrealized gains totaled approximately $1 million (pre-tax). Refer to Note 4 for a table that provides the net realized gains (losses) related to sales or impairments of debt and equity securities, which includes marketable securities. The gross amounts of the realized gains or losses were not material. Cost of securities sold use the first in, first out (FIFO) method. Since these marketable securities are classified as available-for-sale securities, changes in fair value will flow through other comprehensive income, with amounts reclassified out of other comprehensive income into earnings upon sale or “other-than-temporary” impairment.
	3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as “temporary” or “other-than-temporary”. A temporary impairment charge results in an unrealized loss being recorded in the other comprehensive income component of shareholders' equity. Such an unrealized loss does not reduce net income attributable to 3M for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors.
	The balances at June 30, 2014 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)		30-Jun-14
	Due in one year or less		$	329
	Due after one year through five years			1,737
	Due after five years through ten years			22
	Due after ten years			―
	Total marketable securities		$	2,088
	3M has a diversified marketable securities portfolio with a fair market value of $2.088 billion as of June 30, 2014. Within this portfolio, current and long-term asset-backed securities (estimated fair value of $915 million) primarily include interests in automobile loans, credit cards and equipment leases. 3M's investment policy allows investments in asset-backed securities with minimum credit ratings of Aa2 by Moody's Investors Service or AA by Standard & Poor's or Fitch Ratings or DBRS. Asset-backed securities must be rated by at least two of the aforementioned rating agencies, one of which must be Moody's Investors Service or Standard & Poor's. At June 30, 2014, all asset-backed security investments were in compliance with this policy. Approximately 96.5 percent of all asset-backed security investments were rated AAA or A-1+ by Standard & Poor's and/or Aaa or P-1 by Moody's Investors Service.
	3M's marketable securities portfolio includes auction rate securities that represent interests in investment grade credit default swaps; however, currently these holdings comprise less than one percent of this portfolio. The estimated fair value of auction rate securities was $12 million at June 30, 2014 and $11 million at December 31, 2013. Gross unrealized losses within accumulated other comprehensive income related to auction rate securities totaled $1 million (pre-tax) at June 30, 2014 and $2 million (pre-tax) at December 31, 2013. As of June 30, 2014, auction rate securities associated with these balances have been in a loss position for more than 12 months. Since the second half of 2007, these auction rate securities failed to auction due to sell orders exceeding buy orders. Liquidity for these auction-rate securities is typically provided by an auction process that resets the applicable interest rate at pre-determined intervals, usually every 7, 28, 35, or 90 days. The funds associated with failed auctions will not be accessible until a successful auction occurs or a buyer is found outside of the auction process. Refer to Note 10 for a table that reconciles the beginning and ending balances of auction rate securities.

LongTerm_Debt_and_ShortTerm_Bo

Long-Term Debt and Short-Term Borrowings	6 Months Ended
	Jun. 30, 2014
Long-Term Debt and Short-Term Borrowings	'
Long-Term Debt and Short-Term Borrowings	'
	NOTE 7. Long-Term Debt and Short-Term Borrowings
	The Company has a “well-known seasoned issuer” shelf registration statement, effective May 16, 2014, which registers an indeterminate amount of debt or equity securities for future sales. This replaced 3M's previous shelf registration dated August 5, 2011. In June 2014, in connection with the May 16, 2014 shelf registration, 3M re-commenced its medium-term notes program (Series F) under which 3M may issue, from time to time, up to $9 billion aggregate principal amount of notes. Included in this $9 billion are $2.25 billion of notes previously issued in 2011 and 2012 as part of Series F. In June 2014, 3M issued $625 million aggregate principal amount of five-year fixed rate medium-term notes due 2019 with a coupon rate of 1.625%. Upon debt issuance, the Company entered into an interest rate swap to convert $600 million of this amount to an interest rate based on a floating LIBOR index. In addition, in June 2014, 3M issued $325 million aggregate principal amount of thirty-year fixed rate medium-term notes due 2044 with a coupon rate of 3.875%. Both June 2014 debt issuances were from the medium-term notes program (Series F). In addition, subsequent to quarter-end, in July 2014, 3M repaid 1.025 billion Euros of maturing Eurobond notes funded primarily through the issuances of commercial paper.

Pension_and_Postretirement_Ben

Pension and Postretirement Benefit Plans	6 Months Ended
	Jun. 30, 2014
Pension and Postretirement Benefit Plans	'
Pension and Postretirement Benefit Plans	'
	NOTE 8. Pension and Postretirement Benefit Plans
	Net periodic benefit cost is recorded in cost of sales, selling, general and administrative expenses, and research, development and related expenses. Components of net periodic benefit cost and other supplemental information for the three and six months ended June 30, 2014 and 2013 follow:
	Benefit Plan Information
			Three months ended June 30,
			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
	(Millions)		2014		2013		2014		2013		2014		2013
	Net periodic benefit cost (benefit)
		Service cost	$	60	$	64	$	35	$	36	$	17	$	20
		Interest cost		169		149		65		61		24		22
		Expected return on plan assets		-261		-261		-80		-75		-23		-23
		Amortization of transition (asset) obligation		―		―		―		―		―		―
		Amortization of prior service cost (benefit)		1		1		-4		-5		-12		-16
		Amortization of net actuarial (gain) loss		61		100		31		40		15		24
	Net periodic benefit cost (benefit)		$	30	$	53	$	47	$	57	$	21	$	27
	Settlements, curtailments, special termination benefits and other			―		―		―		―		―		―
	Net periodic benefit cost (benefit) after settlements, curtailments,
		special termination benefits and other	$	30	$	53	$	47	$	57	$	21	$	27
			Six months ended June 30,
			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
	(Millions)		2014		2013		2014		2013		2014		2013
	Net periodic benefit cost (benefit)
		Service cost	$	120	$	128	$	71	$	72	$	33	$	40
		Interest cost		338		299		129		122		48		44
		Expected return on plan assets		-522		-522		-159		-150		-45		-45
		Amortization of transition (asset) obligation		―		―		―		-1		―		―
		Amortization of prior service cost (benefit)		2		2		-8		-9		-24		-33
		Amortization of net actuarial (gain) loss		122		200		62		80		29		48
	Net periodic benefit cost (benefit)		$	60	$	107	$	95	$	114	$	41	$	54
	Settlements, curtailments, special termination benefits and other			―		―		―		―		―		―
	Net periodic benefit cost (benefit) after settlements, curtailments,
		special termination benefits and other	$	60	$	107	$	95	$	114	$	41	$	54
	For the six months ended June 30, 2014, contributions totaling $74 million were made to the Company's U.S. and international pension plans and $3 million to its postretirement plans. For total year 2014, the Company expects to contribute approximately $100 million to $200 million of cash to its global pension and postretirement plans. The Company does not have a required minimum cash pension contribution obligation for its U.S. plans in 2014. Therefore, the amount of future discretionary pension contributions could vary significantly depending on the U.S. plans' funded status and the anticipated tax deductibility of the contributions. Future contributions will also 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.
	3M was informed during the first quarter of 2009 that the general partners of WG Trading Company, in which 3M's benefit plans hold limited partnership interests, are the subject of a criminal investigation as well as civil proceedings by the SEC and CFTC (Commodity Futures Trading Commission). In March 2011, over the objections of 3M and six other limited partners of WG Trading Company, the district court judge ruled in favor of the court appointed receiver's proposed distribution plan (and in April 2013, the United States Court of Appeals for the Second Circuit affirmed the district court's ruling). The benefit plan trustee holdings of WG Trading Company interests were adjusted to reflect the decreased estimated fair market value, inclusive of estimated insurance proceeds, as of the annual measurement dates. The Company has insurance that it believes, based on what is currently known, will result in the recovery of a portion of the decrease in original asset value. As of the 2013 measurement date these holdings represented less than one percent of 3M's fair value of total plan assets. 3M currently believes that the resolution of these events will not have a material adverse effect on the consolidated financial position of the Company.
	In addition, the Company also sponsors employee savings plans under Section 401(k) of the Internal Revenue Code, as discussed in Note 10 in 3M's Form 8-K dated May 15, 2014 (which updated 3M's 2013 Annual Report on Form 10-K).

Derivatives

Derivatives

6 Months Ended

Jun. 30, 2014

Derivatives

'

Derivatives

'

NOTE 9. Derivatives

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

Additional information with respect to the impacts on other comprehensive income of nonderivative hedging and derivative instruments is included in Note 4. Additional information with respect to the fair value of derivative instruments is included in Note 10. References to information regarding derivatives and/or hedging instruments associated with the Company's long-term debt are also made in Note 9 to the Consolidated Financial Statements in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 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 and certain intercompany financing transactions. These transactions are designated as cash flow hedges. The settlement or extension of these derivatives will result in reclassifications (from accumulated other comprehensive income) to earnings in the period during which the hedged transactions affect earnings. Generally, 3M dedesignates these cash flow hedge relationships in advance of the occurrence of the forecasted transaction. The portion of gains or losses on the derivative instrument previously accumulated in other comprehensive income for dedesignated hedges remains in accumulated other comprehensive income until the forecasted transaction occurs. Changes in the value of derivative instruments after dedesignation are recorded in earnings and are included in the Derivatives Not Designated as Hedging Instruments section below. Hedge ineffectiveness and the amount excluded from effectiveness testing recognized in income on cash flow hedges were not material for the three and six months ended June 30, 2014 and 2013. Beginning in the second quarter of 2014 3M began extending the maximum length of time over which it hedges its exposure to the variability in future cash flows of the forecasted transactions from a previous term of 12 months to a longer term of 24 months. At June 30, 2014, the majority of the Company's open foreign exchange forward and option contracts had maturities of one year or less. The dollar equivalent gross notional amount of the Company's foreign exchange forward and option contracts designated as cash flow hedges at June 30, 2014 was approximately $1.9 billion.

Cash Flow Hedging - Commodity Price Management: The Company manages commodity price risks through negotiated supply contracts, price protection agreements and forward physical contracts. The Company uses commodity price swaps relative to natural gas as cash flow hedges of forecasted transactions to manage price volatility. The related mark-to-market gain or loss on qualifying hedges is included in other comprehensive income to the extent effective, and reclassified into cost of sales in the period during which the hedged transaction affects earnings. Generally, the length of time over which 3M hedges its exposure to the variability in future cash flows for its forecasted natural gas transactions is 12 months. No significant commodity cash flow hedges were discontinued and hedge ineffectiveness was not material for the three and six months ended June 30, 2014 and 2013. The dollar equivalent gross notional amount of the Company's natural gas commodity price swaps designated as cash flow hedges at June 30, 2014 was $22 million.

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

As of June 30, 2014, the Company had a balance of $15 million associated with the after-tax net unrealized loss associated with cash flow hedging instruments recorded in accumulated other comprehensive income. This net loss includes a $2 million balance (loss) related to a floating-to-fixed interest rate swap (discussed in the preceding paragraph), which is being amortized over the five-year life of the note. 3M expects to reclassify a majority of the remaining balance to earnings over the next 12 months (with the impact offset by cash flows from underlying hedged items).

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

The Company revised amounts previously presented in the tables below for the pretax gain (loss) recognized in other comprehensive income on effective portion of derivative (“Gain Recognized in OCI”) and the pretax gain (loss) recognized in income on effective portion of derivative as a result of reclassification from accumulated other comprehensive income (“Gain Reclassified into Income”) for the three and six months ended June 30, 2013 relative to foreign currency forward contracts. These immaterial corrections decreased both the previously presented amounts of the Gain Recognized in OCI and the Gain Reclassified into Income in the disclosure tables below by $37 million and $2 million in for the three and six months ended June 30, 2013, respectively. The revisions had no impact on the Company's consolidated results of operations or financial condition.

Three months ended June 30, 2014

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

-20

Cost of sales

$

-6

Cost of sales

$

―

Commodity price swap contracts

-1

Cost of sales

1

Cost of sales

―

Total

$

-21

$

-5

$

―

Six months ended June 30, 2014

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

-13

Cost of sales

$

-2

Cost of sales

$

―

Commodity price swap contracts

1

Cost of sales

3

Cost of sales

―

Total

$

-12

$

1

$

―

Three months ended June 30, 2013

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

10

Cost of sales

$

-3

Cost of sales

$

―

Foreign currency forward contracts

-86

Interest expense

-89

Interest expense

―

Commodity price swap contracts

-3

Cost of sales

1

Cost of sales

―

Total

$

-79

$

-91

$

―

Six months ended June 30, 2013

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

41

Cost of sales

$

-9

Cost of sales

$

―

Foreign currency forward contracts

-154

Interest expense

-155

Interest expense

―

Commodity price swap contracts

-1

Cost of sales

―

Cost of sales

―

Total

$

-114

$

-164

$

―

Fair Value Hedges:

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

Fair Value Hedging - Interest Rate Swaps: The Company manages interest expense using a mix of fixed and floating rate debt. To help manage borrowing costs, the Company may enter into interest rate swaps. Under these arrangements, the Company agrees to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated by reference to an agreed-upon notional principal amount. The mark-to-market of these fair value hedges is recorded as gains or losses in interest expense and is offset by the gain or loss of the underlying debt instrument, which also is recorded in interest expense. These fair value hedges are highly effective and, thus, there is no impact on earnings due to hedge ineffectiveness. The dollar equivalent (based on inception date foreign currency exchange rates) gross notional amount of the Company's interest rate swaps at June 30, 2014 was $1.3 billion.

At June 30, 2014, the Company had interest rate swaps designated as fair value hedges of underlying fixed rate obligations. In July 2007, in connection with the issuance of a seven-year Eurobond for an amount of 750 million Euros, the Company completed a fixed-to-floating interest rate swap on a notional amount of 400 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation. In August 2010, the Company terminated 150 million Euros of the notional amount of this swap. As a result, a gain of 18 million Euros, recorded as part of the balance of the underlying debt, is amortized as an offset to interest expense over this debt's remaining life. Prior to termination of the applicable portion of the interest rate swap, the mark-to-market of the hedge instrument was recorded as gains or losses in interest expense and was offset by the gain or loss on carrying value of the underlying debt instrument. Consequently, the subsequent amortization of the 18 million Euros recorded as part of the underlying debt balance is not part of the gain on hedged items recognized in income in the tables below.

In November 2013, 3M issued an eight-year 1.875% fixed rate Eurobond for a face amount of 600 million Euros. Upon debt issuance, 3M completed a fixed-to-floating interest rate swap on a notional amount of 300 million Euros as a fair value hedge of a portion of the fixed interest rate Eurobond obligation.

In June 2014, 3M issued a five-year 1.625% fixed rate medium-term note for a face amount of $625 million. Upon debt issuance, 3M completed a fixed-to-floating interest rate swap on a notional amount of $600 million as a fair value hedge of a portion of the fixed interest rate medium-term note obligation.

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:

Three months ended June 30, 2014

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

6

Interest expense

$

-6

Total

$

6

$

-6

Six months ended June 30, 2014

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

13

Interest expense

$

-13

Total

$

13

$

-13

Three months ended June 30, 2013

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

-3

Interest expense

$

3

Total

$

-3

$

3

Six months ended June 30, 2013

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

-8

Interest expense

$

8

Total

$

-8

$

8

Net Investment Hedges:

As circumstances warrant, the Company uses cross currency swaps, forwards and foreign currency denominated debt to hedge portions of the Company's net investments in foreign operations. For hedges that meet the effectiveness requirements, the net gains or losses attributable to changes in spot exchange rates are recorded in cumulative translation within other comprehensive income. The remainder of the change in value of such instruments is recorded in earnings. Recognition in earnings of amounts previously recorded in cumulative translation is limited to circumstances such as complete or substantially complete liquidation of the net investment in the hedged foreign operation.

In addition to the derivative instruments used as hedging instruments in net investment hedges, 3M also uses foreign currency denominated debt as nonderivative hedging instruments in certain net investment hedges. In July and December 2007, the Company issued seven-year fixed rate Eurobond securities for amounts of 750 million Euros and 275 million Euros, respectively. 3M designated each of these Eurobond issuances as hedging instruments of the Company's net investment in its European subsidiaries. In the second quarter of 2014, the Company dedesignated 716 million Euros of the seven-year Eurobond securities due in July 2014 from the net investment hedge relationship. Accordingly, changes in carrying value of this portion of the foreign currency denominated debt due to exchange rate changes will be recorded in earnings going forward through their July 2014 maturity.

In November 2013, the Company issued eight-year fixed rate Eurobond securities for 600 million Euros. 3M designated each of these Eurobond issuances as hedging instruments of the Company's net investment in its European subsidiaries.

In anticipation of the November 2013 Eurobond issuance, the Company entered into foreign currency forward contracts with notional amounts totaling 594 million Euros. These forward contracts were designated as hedging instruments of the Company's net investment in its European subsidiaries. These contracts matured in November 2013.

In the second quarter of 2014, the Company entered into foreign currency forward contracts with notional amounts totaling 450 million Euros. These forward contracts were designated as hedging instruments of the Company's net investment in its European subsidiaries. These contracts mature in September 2014.

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.

Three months ended June 30, 2014

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-18

N/A

$

―

Foreign currency forward contracts

1

N/A

―

Total

$

-17

$

―

Six months ended June 30, 2014

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-27

N/A

$

―

Foreign currency forward contracts

1

N/A

―

Total

$

-26

$

―

Three months ended June 30, 2013

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-24

N/A

$

―

Total

$

-24

$

―

Six months ended June 30, 2013

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

17

N/A

$

―

Total

$

17

$

―

Derivatives Not Designated as Hedging Instruments:

Derivatives not designated as hedging instruments include dedesignated foreign currency forward and option contracts that formerly were designated in cash flow hedging relationships (as referenced in the preceding Cash Flow Hedges section). In addition, 3M enters into foreign currency forward contracts and commodity price swaps to offset, in part, the impacts of certain intercompany activities (primarily associated with intercompany licensing arrangements) and fluctuations in costs associated with the use of certain precious metals, respectively. These derivative instruments are not designated in hedging relationships; therefore, fair value gains and losses on these contracts are recorded in earnings. The dollar equivalent gross notional amount of these forward, option and swap contracts not designated as hedging instruments totaled $8.1 billion as of June 30, 2014. The Company does not hold or issue derivative financial instruments for trading purposes.

The Company revised amounts previously presented in the tables below for the gain (loss) on derivative recognized in income (“Gain Recognized in Income”) for the three and six months ended June 30, 2013 relative to foreign currency forward contracts. These immaterial corrections decreased the previously presented amounts of the Gain Recognized in Income in the disclosure tables below by $21 million for both the three and six months ended June 30, 2013. The revisions had no impact on the Company's consolidated results of operations or financial condition

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

Derivatives Not Designated as Hedging Instruments

Three months ended June 30, 2014

Six months ended June 30, 2014

Gain (Loss) on Derivative Recognized in Income

Gain (Loss) on Derivative Recognized in Income

(Millions)

Location

Amount

Location

Amount

Foreign currency forward/option contracts

Cost of sales

$

-2

Cost of sales

$

-3

Foreign currency forward contracts

Interest expense

35

Interest expense

68

Total

$

33

$

65

Derivatives Not Designated as Hedging Instruments

Three months ended June 30, 2013

Six months ended June 30, 2013

Gain (Loss) on Derivative Recognized in Income

Gain (Loss) on Derivative Recognized in Income

(Millions)

Location

Amount

Location

Amount

Foreign currency forward/option contracts

Cost of sales

$

21

Cost of sales

$

31

Foreign currency forward contracts

Interest expense

-27

Interest expense

-6

Commodity price swap contracts

Cost of sales

-1

Cost of sales

-1

Total

$

-7

$

24

Location and Fair Value Amount of Derivative Instruments

The following tables summarize the fair value of 3M's derivative instruments, excluding nonderivative instruments used as hedging instruments, and their location in the consolidated balance sheet. Additional information with respect to the fair value of derivative instruments is included in Note 10.

30-Jun-14

(Millions)

Assets

Liabilities

Fair Value of Derivative Instruments

Location

Amount

Location

Amount

Derivatives designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

12

Other current liabilities

$

23

Commodity price swap contracts

Other current assets

1

Other current liabilities

1

Interest rate swap contracts

Other assets

17

Other liabilities

2

Total derivatives designated as

hedging instruments

$

30

$

26

Derivatives not designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

40

Other current liabilities

$

31

Total derivatives not designated as

hedging instruments

$

40

$

31

Total derivative instruments

$

70

$

57

December 31, 2013

(Millions)

Assets

Liabilities

Fair Value of Derivative Instruments

Location

Amount

Location

Amount

Derivatives designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

24

Other current liabilities

$

35

Commodity price swap contracts

Other current assets

1

Other current liabilities

―

Interest rate swap contracts

Other assets

8

Other liabilities

7

Total derivatives designated as

hedging instruments

$

33

$

42

Derivatives not designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

51

Other current liabilities

$

68

Total derivatives not designated as

hedging instruments

$

51

$

68

Total derivative instruments

$

84

$

110

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, 2014, 3M has International Swaps and Derivatives Association (ISDA) agreements with 12 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 11 of its primary derivative counterparties which, among other things, provide the circumstances under which either party is required to post eligible collateral (when the market value of transactions covered by these agreements exceeds specified thresholds or if a counterparty's credit rating has been downgraded to a predetermined rating). The Company does not anticipate nonperformance by any of these counterparties.

3M has elected to present the fair value of derivative assets and liabilities within the Company's consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation. However, the following tables provide information as if the Company had elected to offset the asset and liability balances of derivative instruments, netted in accordance with various criteria in the event of default or termination as stipulated by the terms of netting arrangements with each of the counterparties. For each counterparty, if netted, the Company would offset the asset and liability balances of all derivatives at the end of the reporting period based on the 3M entity that is a party to the transactions. Derivatives not subject to master netting agreements are not eligible for net presentation. As of the applicable dates presented below, no cash collateral had been received or pledged related to these derivative instruments.

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

30-Jun-14

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Liabilities

Cash Collateral Received

Net Amount of Derivative Assets

Derivatives subject to master

netting agreements

$

69

$

33

$

―

$

36

Derivatives not subject to master

netting agreements

1

1

Total

$

70

$

37

30-Jun-14

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Assets

Cash Collateral Pledged

Net Amount of Derivative Liabilities

Derivatives subject to master

netting agreements

$

57

$

33

$

―

$

24

Derivatives not subject to master

netting agreements

―

―

Total

$

57

$

24

31-Dec-13

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Liabilities

Cash Collateral Received

Net Amount of Derivative Assets

Derivatives subject to master

netting agreements

$

83

$

51

$

―

$

32

Derivatives not subject to master

netting agreements

1

1

Total

$

84

$

33

31-Dec-13

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Assets

Cash Collateral Pledged

Net Amount of Derivative Liabilities

Derivatives subject to master

netting agreements

$

110

$

51

$

―

$

59

Derivatives not subject to master

netting agreements

―

―

Total

$

110

$

59

Currency Effects

3M estimates that year-on-year currency effects, including hedging impacts, decreased net income attributable to 3M by approximately $25 million for the three months ended June 30, 2014 and decreased net income attributable to 3M by approximately $54 million for the six months ended June 30, 2014. This estimate includes the effect of translating profits from local currencies into U.S. dollars and the impact of currency fluctuations on the transfer of goods between 3M operations in the United States and abroad. This estimate also includes year-on-year currency effects from transaction gains and losses, including derivative instruments designed to reduce foreign currency exchange rate risks and the negative impact of converting Venezuelan bolivars into Euros and U.S. dollars, which 3M estimates decreased net income attributable to 3M by approximately $22 million for three months ended June 30, 2014 and decreased net income attributable to 3M by approximately $25 million for the six months ended June 30, 2014.

Fair_Value_Measurements

Fair Value Measurements

6 Months Ended

Jun. 30, 2014

Fair Value Measurements

'

Fair Value Measurements

'

NOTE 10. Fair Value Measurements

3M follows ASC 820, Fair Value Measurements and Disclosures, with respect to assets and liabilities that are measured at fair value on a recurring basis and nonrecurring basis. Under the standard, fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The standard also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs market participants would use in valuing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors market participants would use in valuing the asset or liability developed based upon the best information available in the circumstances. The hierarchy is broken down into three levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

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

For 3M, assets and liabilities that are measured at fair value on a recurring basis primarily relate to available-for-sale marketable securities, available-for-sale investments (included as part of investments in the Consolidated Balance Sheet) and certain derivative instruments. Derivatives include cash flow hedges, interest rate swaps and most net investment hedges. The information in the following paragraphs and tables primarily addresses matters relative to these financial assets and liabilities. Separately, there were no material fair value measurements with respect to nonfinancial assets or liabilities that are recognized or disclosed at fair value in the Company's financial statements on a recurring basis for the three and six months ended June 30, 2014 and 2013.

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

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

Marketable securities, except auction rate securities, are valued utilizing multiple sources. A weighted average price is used for these securities. Market prices are obtained for these securities from a variety of industry standard data providers, security master files from large financial institutions, and other third-party sources. These multiple prices are used as inputs into a distribution-curve-based algorithm to determine the daily fair value to be used. 3M classifies U.S. treasury securities as level 1, while all other marketable securities (excluding auction rate securities) are classified as level 2. Marketable securities are discussed further in Note 6.

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

As discussed in Note 6, auction rate securities held by 3M failed to auction since the second half of 2007. As a result, investments in auction rate securities are valued utilizing third-party indicative bid levels in markets that are not active and broker-dealer valuation models that utilize inputs such as current/forward interest rates, current market conditions and credit default swap spreads. 3M classifies these securities as level 3.

Available-for-sale investments:

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

Derivative instruments:

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

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

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

Fair Value Measurements

(Millions)

Fair Value at

Using Inputs Considered as

Description

30-Jun-14

Level 1

Level 2

Level 3

Assets:

Available-for-sale:

Marketable securities:

U.S. government agency securities

$

148

$

―

$

148

$

―

Foreign government agency securities

120

―

120

―

Corporate debt securities

796

―

796

―

Certificates of deposit/time deposits

48

―

48

―

Asset-backed securities:

Automobile loan related

537

―

537

―

Credit card related

222

―

222

―

Equipment lease related

88

―

88

―

Other

68

―

68

―

U.S. treasury securities

49

49

―

―

Auction rate securities

12

―

―

12

Investments

1

1

―

―

Derivative instruments — assets:

Foreign currency forward/option contracts

52

52

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

17

―

17

―

Liabilities:

Derivative instruments — liabilities:

Foreign currency forward/option contracts

54

54

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

2

―

2

―

Fair Value at

Fair Value Measurements

(Millions)

31-Dec-13

Using Inputs Considered as

Description

Level 1

Level 2

Level 3

Assets:

Available-for-sale:

Marketable securities:

U.S. government agency securities

$

234

$

―

$

234

$

―

Foreign government agency securities

125

―

125

―

Corporate debt securities

781

―

781

―

Certificates of deposit/time deposits

40

―

40

―

Commercial paper

60

―

60

―

Asset-backed securities:

Automobile loan related

585

―

585

―

Credit card related

180

―

180

―

Equipment lease related

67

―

67

―

Other

75

―

75

―

U.S. treasury securities

49

49

―

―

U.S. municipal securities

2

―

2

―

Auction rate securities

11

―

―

11

Investments

2

2

―

―

Derivative instruments — assets:

Foreign currency forward/option contracts

75

75

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

8

―

8

―

Liabilities:

Derivative instruments — liabilities:

Foreign currency forward/option contracts

103

103

―

―

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

(Millions)

June 30,

June 30,

Marketable securities – auction rate securities only

2014

2013

2014

2013

Beginning balance

$

12

$

7

$

11

$

7

Total gains or losses:

Included in earnings

―

―

―

―

Included in other comprehensive income

―

3

1

3

Purchases, issuances, and settlements

―

―

―

―

Transfers in and/or out of Level 3

―

―

―

―

Ending balance

12

10

12

10

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 10 in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 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. There were no material long-lived asset impairments for the three and six months ended June 30, 2014 and 2013.

Fair Value of Financial Instruments:

The Company's financial instruments include cash and cash equivalents, marketable securities, accounts receivable, certain investments, accounts payable, borrowings, and derivative contracts. The fair values of cash and cash equivalents, accounts receivable, accounts payable, and short-term borrowings and current portion of long-term debt (except the Eurobond securities totaling 1.025 billion Euros, which were moved from long-term debt to current portion of long-term debt in July 2013 and are shown separately in the table below) approximated carrying values because of the short-term nature of these instruments. Available-for-sale marketable securities and investments, in addition to certain derivative instruments, are recorded at fair values as indicated in the preceding disclosures. For its long-term debt the Company utilized third-party quotes to estimate fair values (classified as level 2). Information with respect to the carrying amounts and estimated fair values of these financial instruments follow:

30-Jun-14

31-Dec-13

Carrying

Fair

Carrying

Fair

(Millions)

Value

Value

Value

Value

Eurobond securities due July 2014

$

1,396

$

1,398

$

1,424

$

1,447

Long-term debt, excluding current portion

5,323

5,575

4,326

4,463

The fair values reflected above consider the terms of the related debt absent the impacts of derivative/hedging activity. The carrying amount of long-term debt referenced above is impacted by certain fixed-to-floating interest rate swaps that are designated as fair value hedges and by the designation of fixed rate Eurobond securities issued by the Company as hedging instruments of the Company's net investment in its European subsidiaries. Many of 3M's fixed-rate bonds were trading at a premium at June 30, 2014 and December 31, 2013 due to the low interest rates and tightening of 3M's credit spreads.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies	'
Commitments and Contingencies	'
	NOTE 11. 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 13 “Commitments and Contingencies” in the Company's Annual Report on Form 10-K for the year ended December 31, 2013, as updated by the Company's Current Report on Form 8-K dated May 15, 2014.
	The following table shows the major categories of significant legal matters — respirator mask/asbestos litigation (including Aearo – described below), environmental remediation and other environmental liabilities — for which the Company has been able to estimate its probable liability and for which the Company has recorded accruals and the related insurance receivables:
	Liability and Receivable Balances
	(Millions)		30-Jun-14		31-Dec-13
	Respirator mask/asbestos liabilities	$	153	$	152
	Respirator mask/asbestos insurance receivables		47		58
	Environmental remediation liabilities	$	26	$	27
	Environmental remediation insurance receivables		11		11
	Other environmental liabilities	$	45	$	48
	Other environmental insurance receivables		15		15
	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, 2014, the Company is a named defendant, with multiple co-defendants, in numerous lawsuits in various courts that purport to represent approximately 2,225 individual claimants, compared to approximately 2,200 individual claimants with actions pending at December 31, 2013.
	The vast majority of the lawsuits and claims resolved by and currently pending against the Company allege use of some of the Company's mask and respirator products and seek damages from the Company and other defendants for alleged personal injury from workplace exposures to asbestos, silica, coal mine dust or other occupational dusts found in products manufactured by other defendants or generally in the workplace. A minority of the lawsuits and claims resolved by and currently pending against the Company generally allege personal injury from occupational exposure to asbestos from products previously manufactured by the Company, which are often unspecified, as well as products manufactured by other defendants, or occasionally at Company premises.
	The Company's current volume of new and pending matters is substantially lower than its historical experience over a decade ago. The Company expects that filing of claims by unimpaired claimants in the future will continue to be at much lower levels than in the past. Accordingly, the number of claims alleging more serious injuries, including mesothelioma and other malignancies, will represent a greater percentage of total claims than in the past. The Company has prevailed in all nine cases taken to trial, including seven of the eight cases tried to verdict (such trials occurred in 1999, 2000, 2001, 2003, 2004, and 2007), and an appellate reversal in 2005 of the 2001 jury verdict adverse to the Company. The ninth case, tried in 2009, was dismissed by the Court at the close of plaintiff's evidence, based on the Court's legal finding that the plaintiff had not presented sufficient evidence to support a jury verdict.
	The Company has demonstrated in these past trial proceedings that its respiratory protection products are effective as claimed when used in the intended manner and in the intended circumstances. Consequently the Company believes that claimants are unable to establish that their medical conditions, even if significant, are attributable to the Company's respiratory protection products. Nonetheless the Company's litigation experience indicates that claims of persons with malignant conditions are costlier to resolve than the claims of unimpaired persons, and it therefore believes the average cost of resolving pending and future claims on a per-claim basis will continue to be higher than it experienced in prior periods when the vast majority of claims were asserted by the unimpaired.
	As previously reported, the State of West Virginia, through its Attorney General, filed a complaint in 2003 against the Company and two other manufacturers of respiratory protection products in the Circuit Court of Lincoln County, West Virginia and amended its complaint in 2005. The amended complaint seeks substantial, but unspecified, compensatory damages primarily for reimbursement of the costs allegedly incurred by the State for worker's compensation and healthcare benefits provided to all workers with occupational pneumoconiosis and unspecified punitive damages. While the case has been inactive since the fourth quarter of 2007, the court held a case management conference in March 2011. In November 2013, the State filed a motion to bifurcate the lawsuit into separate liability and damages proceedings. A hearing on that motion has not yet been scheduled. 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 estimates its respirator mask/asbestos liabilities, including the cost to resolve the claims and defense costs, by examining: (i) the Company's experience in resolving claims, (ii) apparent trends, (iii) the apparent quality of claims (e.g., whether the claim has been asserted on behalf of asymptomatic claimants), (iv) changes in the nature and mix of claims (e.g., the proportion of claims asserting usage of the Company's mask or respirator products and alleging exposure to each of asbestos, silica, coal or other occupational dusts, and claims pleading use of asbestos-containing products allegedly manufactured by the Company), (v) the number of current claims and a projection of the number of future asbestos and other claims that may be filed against the Company, (vi) the cost to resolve recently settled claims, and (vii) an estimate of the cost to resolve and defend against current and future claims.
	Developments may occur that could affect the Company's estimate of its liabilities. These developments include, but are not limited to, significant changes in (i) the number of future claims, (ii) the average cost of resolving claims, (iii) the legal costs of defending these claims and in maintaining trial readiness, (iv) changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) changes in the law and procedure applicable to these claims, and (vii) the financial viability of other co-defendants and insurers.
	As a result of the Company's on-going review of its accruals and the greater 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 2014 for respirator mask/asbestos liabilities by $21 million, $14 million of which occurred in the second quarter of 2014. In the first six months of 2014, the Company made payments for fees and settlements of $19 million related to the respirator mask/asbestos litigation, $9 million of which occurred in the second quarter of 2014. As of June 30, 2014, the Company had accruals for respirator mask/asbestos liabilities of $129 million (excluding Aearo accruals). The Company cannot estimate the amount or range of amounts by which the liability may exceed the accrual the Company has established because of the (i) inherent difficulty in projecting the number of claims that have not yet been asserted, (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, 2014, the Company's receivable for insurance recoveries related to the respirator mask/asbestos litigation was $47 million. The Company estimates insurance receivables based on an analysis of its policies, including their exclusions, pertinent case law interpreting comparable policies, its experience with similar claims, and assessment of the nature of each claim and remaining coverage, and records an amount it has concluded is likely to be recovered. Various factors could affect the timing and amount of recovery of this receivable, including (i) delays in or avoidance of payment by insurers; (ii) the extent to which insurers may become insolvent in the future, and (iii) the outcome of negotiations with insurers and legal proceedings with respect to respirator mask/asbestos liability insurance coverage.
	As previously reported, on January 5, 2007 the Company was served with a declaratory judgment action filed on behalf of two of its insurers (Continental Casualty and Continental Insurance Co. – both part of the Continental Casualty Group) disclaiming coverage for respirator mask/asbestos claims. The action, in the District Court in Ramsey County, Minnesota, sought declaratory judgment regarding coverage provided by the policies and the allocation of covered costs among the policies issued by the various insurers. The action named, in addition to the Company, over 60 of the Company's insurers. The plaintiffs, Continental Casualty and Continental Insurance Co., as well as a significant number of the insurer defendants named in the amended complaint were dismissed because of settlements they had reached with the Company regarding the matters at issue in the lawsuit. In July 2013, the Company reached agreements in principle with the remaining insurers in the lawsuit. All of the settlement agreements have now been executed. In June 2014, the Court issued an order dismissing the case. During the first six months of 2014, the Company received payments of $11 million from settlements with insurers, $6 million of which occurred in the second quarter of 2014.
	The Company has unresolved coverage with claims-made carriers for respirator mask claims. The Company is also seeking coverage under the policies of certain insolvent 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, 2014, 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, 2014, the Company, through its Aearo subsidiary, has recorded $24 million as the best estimate of the probable liabilities for product liabilities and defense costs related to current and future Aearo-related asbestos and silica-related claims. Responsibility for legal costs, as well as for settlements and judgments, is currently shared in an informal arrangement among Aearo, Cabot, American Optical Corporation and a subsidiary of Warner Lambert and their insurers (the “Payor Group”). Liability is allocated among the parties based on the number of years each company sold respiratory products under the “AO Safety” brand and/or owned the AO Safety Division of American Optical Corporation and the alleged years of exposure of the individual plaintiff. Aearo's share of the contingent liability is further limited by an agreement entered into between Aearo and Cabot on July 11, 1995. This agreement provides that, so long as Aearo pays to Cabot 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.
	In March 2012, Cabot CSC Corporation and Cabot Corporation filed a lawsuit against Aearo in the Superior Court of Suffolk County, Massachusetts seeking declaratory relief as to the scope of Cabot's indemnity obligations under the July 11, 1995 agreement, including whether Cabot has retained liability for coal workers' pneumoconiosis claims, and seeking damages for breach of contract. In June 2014, the court granted Aearo's motion for summary judgment on all claims. Cabot has filed a motion for reconsideration, and Aearo has filed a motion for clarification of the court's order granting Aearo summary judgment.
	Developments may occur that could affect the estimate of Aearo's liabilities. These developments include, but are not limited to: (i) significant changes in the number of future claims, (ii) significant changes in the average cost of resolving claims, (iii) significant changes in the legal costs of defending these claims, (iv) significant changes in the mix and nature of claims received, (v) trial and appellate outcomes, (vi) significant changes in the law and procedure applicable to these claims, (vii) significant changes in the liability allocation among the co-defendants, (viii) the financial viability of members of the Payor Group including exhaustion of available coverage limits, 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 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 (“PFCs”), including perfluorooctanyl compounds such as perfluorooctanoate (“PFOA”) and perfluorooctane sulfonate (“PFOS”). As a result of its phase-out decision in May 2000, the Company no longer manufactures perfluorooctanyl compounds. The company ceased manufacturing and using the vast majority of these compounds within approximately two years of the phase-out announcement, and ceased all manufacturing and the last significant use of this chemistry by 2008. Through its ongoing life cycle management and its raw material composition identification processes associated with the Company's policies covering the use of all persistent and bio-accumulative materials, the Company has on occasion identified the presence of precursor chemicals in materials purchased from suppliers that may ultimately degrade to PFOA, PFOS, or similar compounds. Upon such identification, the Company works to find alternatives for such chemicals.
	Regulatory activities concerning PFOA and/or PFOS continue in the United States, Europe and elsewhere, and before certain international bodies. These activities include gathering of exposure and use information, risk assessment, and consideration of regulatory approaches. As the database of studies of both chemicals has expanded, the EPA has developed draft 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. Following peer review, the EPA stated it will revise its health effects documents and use them to establish lifetime health advisories for PFOS and PFOA in drinking water. 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. Once finalized, the EPA stated that the lifetime health advisories are expected to supersede the provisional health advisories for PFOA and PFOS in drinking water issued by the EPA in 2009 – currently at 0.4 micrograms per liter for PFOA and 0.2 micrograms per liter for PFOS. 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 PFCs, required to be monitored during the period 2013-2015 by public water system suppliers to determine the extent of their occurrence.
	The Company is continuing to make progress in its work, under the supervision of state regulators, to address its historic disposal of PFC-containing waste associated with manufacturing operations at the 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 PFCs 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 PFCs in fields at its Decatur facility. After a review of the available options to address the presence of PFCs in the soil, ADEM agreed that the preferred remediation option is to use a multilayer cap over the former sludge incorporation areas on the manufacturing site with subsequent groundwater migration controls and treatment. Implementation of that option will continue throughout the balance of 2014 and is expected to be completed in 2017.
	The Company continues to work with the Minnesota Pollution Control Agency (MPCA) pursuant to the terms of the previously disclosed May 2007 Settlement Agreement and Consent Order to address the presence of certain PFCs in the soil and groundwater at former disposal sites in Washington County, Minnesota (Oakdale and Woodbury) and at the Company's manufacturing facility at Cottage Grove, Minnesota. Under this agreement, the Company's principal obligations include (i) evaluating releases of certain PFCs from these sites and proposing response actions; (ii) providing treatment or alternative drinking water upon identifying any level exceeding a Health Based Value (“HBV”) or Health Risk Limit (“HRL”) (i.e., the amount of a chemical in drinking water determined by the Minnesota Department of Health (MDH) to be safe for human consumption over a lifetime) for certain PFCs for which a HBV and/or HRL exists as a result of contamination from these sites; (iii) remediating identified sources of other PFCs at these sites that are not controlled by actions to remediate PFOA and PFOS; and (iv) sharing information with the MPCA about certain perfluorinated compounds. During 2008, the MPCA issued formal decisions adopting remedial options for the former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). In August 2009, the MPCA issued a formal decision adopting remedial options for the Company's Cottage Grove manufacturing facility. During the spring and summer of 2010, 3M began implementing the agreed upon remedial options at the Cottage Grove and Woodbury sites. 3M commenced the remedial option at the Oakdale site in late 2010. At each location the remedial options were recommended by the Company and approved by the MPCA. Remediation work has been completed at the Oakdale and Woodbury sites, and they are in an operational maintenance mode. Remediation will continue at the Cottage Grove site during 2014.
	In February 2014, the Company submitted its most recent environmental assessment report to the Illinois Environmental Protection Agency summarizing the levels of PFCs in the soil, groundwater and surface water at or near its manufacturing facility in Cordova, Illinois. The Company will continue to monitor PFCs at the site and is engaged in discussions with the Illinois EPA concerning next steps for the site. In June 2014, the Illinois EPA conditionally approved a request by the Company to establish a groundwater management zone at the site, which includes ongoing pumping of impacted site groundwater, groundwater monitoring and routine reporting of results.
	The Company cannot predict what additional regulatory actions arising from the foregoing proceedings and activities, if any, may be taken regarding such compounds or the consequences of any such actions.
	Environmental Litigation
	As previously reported, a former employee filed a purported class action lawsuit in 2002 in the Circuit Court of Morgan County, Alabama, seeking unstated damages and alleging that the plaintiffs suffered fear, increased risk, subclinical injuries, and property damage from exposure to certain perfluorochemicals at or near the Company's Decatur, Alabama, manufacturing facility. The Circuit Court in 2005 granted the Company's motion to dismiss the named plaintiff's personal injury-related claims on the basis that such claims are barred by the exclusivity provisions of the state's Workers Compensation Act. The plaintiffs' counsel filed an amended complaint in November 2006, limiting the case to property damage claims on behalf of a purported class of residents and property owners in the vicinity of the Decatur plant. In May 2013, the Court stayed the case for an unknown period due to the filing of a bankruptcy petition by a co-defendant.
	Also, in 2005, the judge in a second purported class action lawsuit (filed by three residents of Morgan County, Alabama, seeking unstated compensatory and punitive damages involving alleged damage to their property from emissions of certain perfluorochemical compounds from the Company's Decatur, Alabama, manufacturing facility that formerly manufactured those compounds) granted the Company's motion to abate the case, effectively putting the case on hold pending the resolution of class certification issues in the first action described above, filed in the same court in 2002. Despite the stay, plaintiffs filed an amended complaint seeking damages for alleged personal injuries and property damage on behalf of the named plaintiffs and the members of a purported class. No further action in the case is expected unless and until the stay is lifted.
	In February 2009, a resident of Franklin County, Alabama, filed a purported class action lawsuit in the Circuit Court of Franklin County seeking compensatory damages and injunctive relief based on the application by the Decatur utility's wastewater treatment plant of wastewater treatment sludge to farmland and grasslands in the state that allegedly contain PFOA, PFOS and other perfluorochemicals. The named defendants in the case include 3M, its subsidiary Dyneon LLC, Daikin America, Inc., Synagro-WWT, Inc., Synagro South, LLC, and Biological Processors of America. The named plaintiff seeks to represent a class of all persons within the State of Alabama who have had PFOA, PFOS, and other perfluorochemicals released or deposited on their property. In March 2010, the Alabama Supreme Court ordered the case transferred from Franklin County to Morgan County. In May 2010, consistent with its handling of the other matters, the Morgan County Circuit Court abated this case, putting it on hold pending the resolution of the class certification issues in the first case filed there.
	In December 2010, the State of Minnesota, by its Attorney General Lori Swanson, acting in its capacity as trustee of the natural resources of the State of Minnesota, filed a lawsuit in Hennepin County District Court against 3M to recover damages (including unspecified assessment costs and reasonable attorney's fees) for alleged injury to, destruction of, and loss of use of certain of the State's natural resources under the Minnesota Environmental Response and Liability Act (MERLA) and the Minnesota Water Pollution Control Act (MWPCA), as well as statutory nuisance and common law claims of trespass, nuisance, and negligence with respect to the presence of PFCs in the groundwater, surface water, fish or other aquatic life, and sediments (the “NRD Lawsuit”). The State also seeks declarations under MERLA that 3M is responsible for all damages the State may suffer in the future for injuries to natural resources from releases of PFCs into the environment, and under MWPCA that 3M is responsible for compensation for future loss or destruction of fish, aquatic life, and other damages.
	In November 2011, the Metropolitan Council filed a motion to intervene and a complaint in the NRD Lawsuit seeking compensatory damages and other legal, declaratory and equitable relief, including reasonable attorneys' fees, for costs and fees that the Metropolitan Council alleges it will be required to assess at some time in the future if the MPCA imposes restrictions on Metropolitan Council's PFOS discharges to the Mississippi River, including the installation and maintenance of a water treatment system. The Metropolitan Council's intervention motion was based on several theories, including common law negligence, and statutory claims under MERLA for response costs, and under the Minnesota Environmental Rights Act (MERA) for declaratory and equitable relief against 3M for PFOS and other PFC pollution of the waters and sediments of the Mississippi River. 3M did not object to the motion to intervene. In January 2012, 3M answered the Metropolitan Council's complaint and filed a counterclaim alleging that the Metropolitan Council discharges PFCs to the Mississippi River and discharges PFC-containing sludge and biosolids from one or more of its wastewater treatment plants onto agricultural lands and local area landfills. Accordingly, 3M requested that if the Court finds that the State is entitled to any of the damages the State seeks, 3M seeks contribution and apportionment from the Metropolitan Council, including attorneys' fees, under MERLA, and contribution from and liability for the Metropolitan Council's proportional share of damages awarded to the State under the MWPCA, as well as under statutory nuisance and common law theories of trespass, nuisance, and negligence. 3M also seeks declaratory relief under MERA.
	In April 2012, 3M filed a motion to disqualify the State of Minnesota's counsel, Covington & Burling, LLP (Covington). In October 2012, the court granted 3M's motion to disqualify Covington as counsel to the State and the State and Covington appealed the court's disqualification to the Minnesota Court of Appeals. In July 2013, the Minnesota Court of Appeals affirmed the district court's disqualification order. In October 2013, the Minnesota Supreme Court granted both the State's and Covington's petition for review of the decision of the Minnesota Court of Appeals. In April 2014, the Minnesota Supreme Court affirmed in part, reversed in part, and remanded the case to the district court for further proceedings. In a separate but related action, the Company filed suit against Covington for breach of its fiduciary duties to the Company and for breach of contract arising out of Covington's representation of the State of Minnesota in the NRD Lawsuit.
	The State of New Jersey filed suit in 2005 against Occidental Chemical Corporation, Tierra Solutions Inc., Maxus Energy Corporation and five other companies seeking cleanup and removal costs and other damages associated with the presence of dioxin and other hazardous substances in the sediment of a 17-mile stretch of the Passaic River in New Jersey. In June 2009, the Company, along with more than 250 other companies, was served with a third-party complaint by Tierra Solutions Inc. and Maxus Energy Corporation seeking contribution towards the cost and damages asserted or incurred for investigation and remediation of discharges to the Passaic River. The third-party complaint seeks to spread those costs among the third-party defendants, including 3M. Allegations asserted against 3M relate to its use of two commercial drum conditioning facilities in New Jersey. In March 2013, 3M and other third party defendants entered into a settlement agreement with the state of New Jersey for an amount that is not material to 3M. In December 2013, the Court approved the settlement and entered the Consent Judgment. The settlement resolves claims or potential claims by the State of New Jersey regarding discharges or alleged discharges into the Passaic River by the settling parties, and precludes certain cost recovery actions by the third-party plaintiffs. The settlement with the State of New Jersey does not include release from potential federal claims yet to be asserted. Total costs for the remedy currently proposed by EPA could easily exceed $1 billion. While the Company does not yet have a basis for estimating its potential exposure in the yet to be asserted EPA claim, the Company currently believes its allocable share of the possible loss, if any, is likely to be a fraction of one percent of the total costs because of the Company's limited potential involvement at this site.
	For environmental litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company's consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time, with the exception of the Passaic River litigation, where the Company's potential exposure, if any, is likely to be a fraction of one percent of the total costs.
	Environmental Liabilities and Insurance Receivables
	As of June 30, 2014, the Company had recorded liabilities of $26 million for estimated “environmental remediation” costs based upon an evaluation of currently available facts with respect to each individual site and also recorded related insurance receivables of $11 million. The Company records liabilities for remediation costs on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company's commitment to a plan of action. Liabilities for estimated costs of environmental remediation, depending on the site, are based primarily upon internal or third-party environmental studies, and estimates as to the number, participation level and financial viability of any other potentially responsible parties, the extent of the contamination and the nature of required remedial actions. The Company adjusts recorded liabilities as further information develops or circumstances change. The Company expects that it will pay the amounts recorded over the periods of remediation for the applicable sites, currently ranging up to 20 years.
	As of June 30, 2014, the Company had recorded liabilities of $45 million for “other environmental liabilities” based upon an evaluation of currently available facts to implement the Settlement Agreement and Consent Order with the MPCA, the remedial action agreement with ADEM, and to address trace amounts of perfluorinated compounds in drinking water sources in the City of Oakdale, Minnesota, as well as presence in the soil and groundwater at the Company's manufacturing facilities in Decatur, Alabama, and Cottage Grove, Minnesota, and at two former disposal sites in Washington County, Minnesota (Oakdale and Woodbury). The Company expects that most of the spending will occur over the next four years. As of June 30, 2014, the Company's receivable for insurance recoveries related to “other environmental liabilities” was $15 million.
	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
	Commercial Litigation
	In October 2012, four plaintiffs filed purported class actions against Ceradyne, Inc., its directors, 3M, and Cyborg Acquisition Corporation (a direct wholly owned subsidiary of 3M) in connection with 3M's proposed acquisition of Ceradyne. Two suits were filed in California Superior Court for Orange County, and two were filed in the Delaware Chancery Court. The suits alleged that the defendants breached and/or aided and abetted the breach of their fiduciary duties to Ceradyne by seeking to sell Ceradyne through an allegedly unfair process and for an unfair price and on unfair terms, and/or by allegedly failing to make adequate disclosures to Ceradyne stockholders regarding the acquisition of Ceradyne. 3M completed its acquisition of Ceradyne in November 2012. In November 2012, the parties reached a settlement with the California plaintiffs for an amount that is not material to the Company, while the Delaware plaintiffs dismissed their complaints without prejudice. The settlement will bind all former Ceradyne shareholders and has received preliminary approval from the California court. A final approval hearing was held in July 2013, and the California Court denied approval of the settlement. The plaintiffs filed a motion for reconsideration of the denial of approval of the settlement, which motion was denied by the California court. The plaintiffs then filed a motion for leave to amend their complaint, which motion was denied without prejudice in January 2014. By stipulation in February 2014, plaintiffs agreed to voluntarily dismiss claims against 3M and Cyborg Acquisition Corporation without prejudice. In March 2014, the Court entered its Order dismissing 3M and Cyborg Acquisition Corporation from the action without prejudice.
	3M sued TransWeb Corporation in Minnesota in 2010 for infringement of several 3M patents covering fluorination and hydrocharging of filter media used in 3M's respirators and furnace filters. TransWeb does not make finished goods, but sells filter media to competitors of 3M's respirator and furnace filter businesses. TransWeb filed a declaratory judgment action in and successfully moved the litigation to the U.S. District Court for the District of New Jersey, seeking a declaration of invalidity and non-infringement of 3M's patents, and further alleging that 3M waited too long to enforce its rights. TransWeb also alleged 3M obtained the patents through inequitable conduct and that 3M's attempt to enforce the patents constituted a violation of the antitrust laws. In November 2012, a jury returned a verdict in favor of TransWeb on all but one count, including findings that 3M's patents were invalid and not infringed, and that 3M had committed an antitrust violation by seeking to enforce a patent it had obtained fraudulently. The jury also recommended that the court find 3M had committed inequitable conduct in obtaining the patents, and that the patents were therefore unenforceable. Since the vast majority of TransWeb's claim for treble antitrust damages were in the form of its attorneys' fees and expenses in connection with the defense of the patent case, the parties agreed that the measure of damages would not go to the jury, but rather would be submitted to a special master after the trial. The special master's recommendations were forwarded to the court in September 2013. On April 21, 2014, the court issued an order denying 3M's motions to set aside the jury's verdict. In addition, the court found two 3M patents unenforceable due to inequitable conduct. The court accepted the Special Master's recommendation as to the amount of attorneys' fees to be awarded as damages, and entered judgment against 3M in the amount of $26 million. In July 2014, 3M filed a notice of appeal of the judgment to the U.S. Court of Appeals for the Federal Circuit.
	For commercial litigation matters described in this section for which a liability, if any, has been recorded, the Company believes the amount recorded, as well as the possible loss or range of loss in excess of the established accrual is not material to the Company's consolidated results of operations or financial condition. For those matters for which a liability has not been recorded, the Company believes that such liability is not probable and estimable and the Company is not able to estimate a possible loss or range of loss at this time, with the exception of the TransWeb matter, where the Company's range of potential exposure, if any, could be approximately $26 million.
	Product Liability Litigation
	Électricité de France (EDF) filed a lawsuit against 3M France in the French courts in 2006 claiming commercial loss and property damage after experiencing electrical network failures which EDF claims were caused by allegedly defective 3M transition splices. The French Court of Appeals at Versailles affirmed the commercial trial court's decision that the transition splices conformed to contract specifications which were thoroughly analyzed and tested by EDF before purchase and installation. The Court of Appeals, however, ordered a court-appointed expert to study the problem and issue a technical opinion on the cause of the network failures. The court-appointed expert submitted his report to the commercial court in May 2014. The expert found potential defects in 3M's product and found that EDF incurred damages in excess of 100 million Euros. The expert's opinion is not dispositive of liability or damages and is subject to numerous factual and legal challenges that will be raised with the court. The commercial court may take from six months to one year to render its decision.
One customer obtained an order in the French courts against 3M Purification SAS (a French subsidiary) in October 2011 appointing an expert to determine the amount of commercial loss and property damage allegedly caused by allegedly defective 3M filters used in the customer's manufacturing process. An Austrian subsidiary of this same customer also filed a claim against 3M Austria GmbH (an Austrian subsidiary) and 3M Purification SAS in the Austrian courts in September 2012 seeking damages for the same issue. Another customer filed a lawsuit against 3M Deutschland GmbH (a German subsidiary) in the German courts in March 2012 seeking commercial loss and property damage allegedly caused by the same 3M filters used in that customer's manufacturing process. The Company has resolved on an amicable basis claims of two other customers arising out of the same issue.
For product liability litigation matters described in this section for which a liability has been recorded, the Company believes the amount recorded is not material to the Company's consolidated results of operations or financial condition. In addition, the Company is not able to estimate a possible loss or range of loss in excess of the established accruals at this time.

StockBased_Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2014
Stock-Based Compensation	'
Stock-Based Compensation	'
	NOTE 12. Stock-Based Compensation
	The 3M 2008 Long-Term Incentive Plan, as discussed in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 Annual Report on Form 10-K), provides for the issuance or delivery of up to 100 million shares of 3M common stock pursuant to awards granted under the plan. Awards under this plan may be issued in the form of Incentive Stock Options, Nonqualified Stock Options, Progressive Stock Options, Stock Appreciation Rights, Restricted Stock Units, Restricted Stock, Other Stock Awards, and Performance Units and Performance Shares. The remaining total shares available for grant under the 2008 Long Term Incentive Plan Program are 28,813,481 as of June 30, 2014.
	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 five years of service. This retiree-eligible population represents 33 percent of the 2014 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 units, restricted stock, 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 six months ended June 30, 2014 and 2013.
	Stock-Based Compensation Expense
			Three months ended						Six months ended
			June 30,						June 30,
	(Millions)		2014			2013			2014		2013
	Cost of sales		$	11		$	6		$	33	$	18
	Selling, general and administrative expenses		35			36			112		113
	Research, development and related expenses		6			5			29		19
	Stock-based compensation expenses		$	52		$	47		$	174	$	150
	Income tax benefits		$	-13		$	-13		$	-53	$	-45
	Stock-based compensation expenses, net of tax		$	39		$	34		$	121	$	105
	The following table summarizes stock option activity during the six months ended June 30, 2014:
	Stock Option Program
					Number of Options		Weighted Average Exercise Price			Weighted Average Remaining Contractual Life (months)	Aggregate Intrinsic Value (millions)
	Under option —
		January 1			43,938,778		$	83.84
		Granted:
			Annual		5,736,183			126.77
		Exercised			-6,229,925			83.02
		Canceled			-154,922			103.29
		30-Jun			43,290,114		$	89.58		68	$	2,323
	Options exercisable
		30-Jun			31,486,006		$	81.41		53	$	1,947
	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, 2014, there was $89 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 25 months. The total intrinsic values of stock options exercised were $340 million and $338 million during the six months ended June 30, 2014 and 2013, respectively. Cash received from options exercised was $517 million and $1.039 billion for the six months ended June 30, 2014 and 2013, respectively. The Company's actual tax benefits realized for the tax deductions related to the exercise of employee stock options were $125 million for both the six months ended June 30, 2014 and 2013.
	For the primary 2014 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.
			Annual
	Stock Option Assumptions		2014
	Exercise price		$	126.72
	Risk-free interest rate			1.9	%
	Dividend yield			2.6	%
	Expected volatility			20.8	%
	Expected life (months)			75
	Black-Scholes fair value		$	19.63
	Expected volatility is a statistical measure of the amount by which a stock price is expected to fluctuate during a period. For the 2014 annual grant date, the Company estimated the expected volatility based upon the average of the most recent one year volatility, the median of the term of the expected life rolling volatility, the median of the most recent term of the expected life volatility of 3M stock, and the implied volatility on the grant date. The expected term assumption is based on the weighted average of historical grants.
	The following table summarizes restricted stock and restricted stock unit activity during the six months ended June 30, 2014:
	Restricted Stock Units and Restricted Stock
								Weighted Average
	Restricted Stock Units and					Number of		Grant Date
	Restricted Stock					Awards		Fair Value
	Nonvested balance —
		As of January 1				3,105,361		$	92.31
			Granted:
				Annual		798,615			126.79
				Other		15,647			141.58
			Vested			-1,066,382			90.63
			Forfeited			-33,543			100.63
		As of June 30				2,819,698		$	102.89
	As of June 30, 2014, 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 25 months. The total fair value of restricted stock units and restricted stock that vested during the six months ended June 30, 2014 and 2013 was $140 million and $106 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 $53 million and $40 million for the six months ended June 30, 2014 and 2013, respectively.
	Restricted stock units granted under the 3M 2008 Long-Term Incentive Plan 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, except for performance shares which do not earn dividends. Since the rights to dividends are forfeitable, there is no impact on basic earnings per share calculations. Weighted average restricted stock unit shares outstanding are included in the computation of diluted earnings per share.
	Performance Shares
	Instead of restricted stock units, the Company makes annual grants of performance shares to members of its executive management. The performance criteria for these performance shares (Organic Sales Growth, Return on Invested Capital and sales from new products) were selected because the Company believes that they are important drivers of long-term shareholder 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. Non-substantive vesting requires that expense for the performance shares be recognized over one or three years depending on when each individual became a 3M executive. The first performance shares, which were granted in 2008, were distributed in 2011. Performance shares do not accrue dividends during the performance period. Therefore, the grant date fair value is determined by reducing the closing stock price on the date of grant by the net present value of dividends during the performance period.
	The following table summarizes performance share activity during the six months ended June 30, 2014:
								Weighted Average
						Number of		Grant Date
	Performance Shares					Awards		Fair Value
	Undistributed balance —
		As of January 1				895,635		$	88.12
			Granted			285,149			123.88
			Distributed			-277,357			84.74
		Performance change			59,443			114.15
		Forfeited			-6,501			102.45
	As of June 30				956,369		$	101.28
As of June 30, 2014, there was $35 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 10 months. During the six months ended June 30, 2014 and June 30, 2013, the total fair value of performance shares that were distributed were $35 million and $52 million, respectively. The Company's actual tax benefits realized for the tax deductions related to the distribution of performance shares for the six months ended June 30, 2014 and June 30, 2013 were $11 million and $16 million, respectively.

Business_Segments

Business Segments	6 Months Ended
	Jun. 30, 2014
Business Segments	'
Business Segments	'
	NOTE 13. 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 operating business segments: Industrial; Safety and Graphics; Electronics and Energy; Health Care; and Consumer. 3M's five business segments bring together common or related 3M technologies, enhancing the development of innovative products and services and providing for efficient sharing of business resources. These segments have worldwide responsibility for virtually all 3M product lines. 3M is not dependent on any single product/service or market. Transactions among reportable segments are recorded at cost. 3M is an integrated enterprise characterized by substantial intersegment cooperation, cost allocations and inventory transfers. Therefore, management does not represent that these segments, if operated independently, would report the operating income information shown. The difference between operating income and pre-tax income relates to interest income and interest expense, which are not allocated to business segments.
	Effective in the first quarter of 2014, 3M transferred a product line between divisions within different business segments and made other changes within business segments in its continuing effort to improve the alignment of its businesses around markets and customers.
	The product move between business segments was as follows:
	The movement of the Fire Protection product line from the Building and Commercial Services Division (Safety and Graphics business segment) to the Industrial Adhesives and Tapes Division (Industrial business segment). This product move resulted in an increase in net sales for total year 2013 of $73 million in the Industrial business segment offset by a corresponding decrease in the Safety and Graphics business segment.
	In addition, other changes within business segments were as follows:
	The combination of certain existing divisions/departments into new divisions. Within the Electronics and Energy business segment, the new divisions include the Electrical Markets Division (which includes the former Infrastructure Protection Division), and the Electronic Solutions Division (which includes the former 3M Touch Systems, Inc.). Within the Safety and Graphics business segment, the new Commercial Solutions Division was created from the combination of the former Architectural Markets Department, the former Building and Commercial Services Division and the former Commercial Graphics Division. None of these combinations crossed business segments.
	The renaming of the former Aerospace and Aircraft Maintenance Division within the Industrial business segment to the Aerospace and Commercial Transportation Division.
	The movement of certain product lines between various divisions within the same business segment.
	Effective in the second quarter of 2014, within the Electronics and Energy business segment, 3M combined three existing divisions into two new divisions. A large portion of both the Electronics Markets Materials Division and the Electronic Solutions Division were combined to form the Electronics Materials Solutions Division, which focuses on semiconductor and electronics materials and assembly solutions. The Optical Systems Division, the remaining portion of the Electronic Solutions Division and a portion of the Electronics Markets Materials Division were combined to form the Display Materials and Systems Division, which focuses on delivering light, color and user interface solutions.
	The financial information presented herein reflects the impact of the preceding product move between business segments for all periods presented.
	Business Segment Information	Three months ended				Six months ended
		June 30,				June 30,
	(Millions)	2014		2013		2014		2013
	Net Sales
	Industrial	$	2,815	$	2,683	$	5,591	$	5,376
	Safety and Graphics		1,494		1,434		2,917		2,833
	Electronics and Energy		1,422		1,340		2,733		2,617
	Health Care		1,416		1,336		2,790		2,647
	Consumer		1,139		1,098		2,218		2,179
	Corporate and Unallocated		-1		1		2		3
	Elimination of Dual Credit		-151		-140		-286		-269
	Total Company	$	8,134	$	7,752	$	15,965	$	15,386
	Operating Income
	Industrial	$	617	$	603	$	1,235	$	1,182
	Safety and Graphics		353		328		671		660
	Electronics and Energy		293		237		520		433
	Health Care		434		417		861		821
	Consumer		241		235		469		472
	Corporate and Unallocated		-49		-87		-121		-161
	Elimination of Dual Credit		-33		-31		-63		-59
	Total Company	$	1,856	$	1,702	$	3,572	$	3,348
	Corporate and unallocated operating income includes a variety of miscellaneous items, such as corporate investment gains and losses, certain derivative gains and losses, certain insurance-related gains and losses, certain litigation and environmental expenses, corporate restructuring charges and certain under- or over-absorbed costs (e.g. pension, stock-based compensation) that the Company may choose not to allocate directly to its business segments. Because this category includes a variety of miscellaneous items, it is subject to fluctuation on a quarterly and annual basis.
	3M business segment reporting measures include dual credit to business segments for certain U.S. sales and related operating income. Management evaluates each of its five operating business segments based on net sales and operating income performance, including dual credit U.S. reporting to further incentivize U.S. sales growth. As a result, 3M provides additional (“dual”) credit to those business segments selling products in the U.S. to an external customer when that segment is not the primary seller of the product. For example, certain respirators are primarily sold by the Personal Safety Division within the Safety and Graphics business segment; however, the Industrial business segment also sells this product to certain customers in its U.S. markets. In this example, the non-primary selling segment (Industrial) would also receive credit for the associated net sales it initiated and the related approximate operating income. The assigned operating income related to dual credit activity may differ from operating income that would result from actual costs associated with such sales. The offset to the dual credit business segment reporting is reflected as a reconciling item entitled “Elimination of Dual Credit,” such that sales and operating income for the U.S. in total are unchanged.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2014
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.
	As described in 3M's Current Report on Form 8-K dated May 15, 2014 (which updated 3M's 2013 Annual Report on Form 10-K) and 3M's Quarterly Report on Form 10-Q for the period ended March 31, 2014, effective in the first quarter of 2014, the Company transferred a product line between divisions within different business segments and made other changes within business segments in its continuing effort to improve the alignment of its businesses around markets and customers (refer to Note 13 herein). Segment information presented herein reflects the impact of these changes for all periods presented. 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 15, 2014.
	Also, effective in the second quarter of 2014, within the Electronics and Energy business segment, 3M combined three existing divisions into two new divisions. A large portion of both the Electronics Markets Materials Division and the Electronic Solutions Division were combined to form the Electronics Materials Solutions Division, which focuses on semiconductor and electronics materials and assembly solutions. The Optical Systems Division, the remaining portion of the Electronic Solutions Division and a portion of the Electronics Markets Materials Division were combined to form the Display Materials and Systems Division, which focuses on delivering light, color and user interface solutions.
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.
	Although local currencies are typically considered as the functional currencies outside the United States, under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, the reporting currency of a foreign entity's parent is assumed to be that entity's functional currency when the economic environment of a foreign entity is highly inflationary—generally when its cumulative inflation is approximately 100 percent or more for the three years that precede the beginning of a reporting period. 3M has a subsidiary in Venezuela with operating income representing less than 1.0 percent of 3M's consolidated operating income for 2013. 3M has determined that the cumulative inflation rate of Venezuela has exceeded, and continues to exceed, 100 percent since November 2009. Accordingly, since January 1, 2010, the financial statements of the Venezuelan subsidiary have been remeasured as if its functional currency were that of its parent.
	The Venezuelan government sets official rates of exchange and conditions precedent to purchase foreign currency at these rates with local currency. Such rates and conditions are subject to change. For the periods presented through January 2013, this rate was set under the Transaction System for Foreign Currency Denominated Securities (SITME). In February 2013, the Venezuelan government announced a devaluation of its currency and the elimination of the SITME market. As a result, the official exchange rate controlled by the Commission for the Administration of Foreign Exchange (CADIVI) changed to a rate less favorable than the previous SITME rate.
	In January 2014, the Venezuelan government announced that a new agency, the National Center for Foreign Commerce (CENCOEX), had assumed the previous role of CADIVI with respect to the continuation of the existing official exchange rate; significantly expanded the use of a second foreign exchange mechanism called the Complementary System for Foreign Currency Acquirement (or SICAD1); and issued exchange regulations indicating the SICAD1 rate of exchange would be used for payments related to international investments. The SICAD1 exchange mechanism, a complementary currency auction system, had previously been created for purchases of foreign currency by only certain eligible importers and tourists. The government had begun publishing the SICAD1 rate resulting from currency auctions in December 2013. In late March 2014, the Venezuelan government launched a third foreign exchange mechanism, SICAD2, which relies on U.S. dollar cash and U.S. dollar denominated bonds offered by the Venezuelan Central Bank, PDVSA (the Venezuelan national oil and gas company) and certain private companies. SICAD2 was announced as being available to all industry sectors and that its use would not be restricted as to purpose.
	Since January 1, 2010, as discussed above, the financial statements of 3M's Venezuelan subsidiary have been remeasured as if its functional currency were that of its parent. For the periods presented, this remeasurement utilized the SITME rate through January 2013, the official CADIVI/CENCOEX rate beginning in February 2013, the SICAD1 rate beginning in March 2014, and the SICAD2 rate beginning in June 2014. 3M's use of SICAD1 and subsequently SICAD2 was based upon evaluation of a number of factors including, but not limited to, the exchange rate the Company's Venezuelan subsidiary may legally use to convert currency, settle transactions or pay dividends; the probability of accessing and obtaining currency by use of a particular rate or mechanism; and the Company's intent and ability to use a particular exchange mechanism. Other factors notwithstanding, the elimination of the SITME rate and use of the CADIVI/CENCOEX exchange rate beginning in February 2013, use of the SICAD1 rate beginning in March 2014, and use of the SICAD2 rate beginning in June 2014 did not have a material impact on 3M's consolidated results of operations or financial condition.
	The Company continues to monitor circumstances relative to its Venezuelan subsidiary. 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, 2014, the Company had a balance of net monetary liabilities denominated in VEF of less than 115 million VEF and the SICAD1 and SICAD2 exchange rates were approximately 10 VEF and 50 VEF per U.S. dollar, respectively. Had 3M utilized the SICAD1 rate rather than the SICAD2 rate of exchange for remeasurement of such items as of June 30, 2014, the differential would not have had a material impact on 3M's consolidated results of operations or financial condition.
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 (3.1 million average options for the three months ended June 30, 2014; 2.7 million average options for the six months ended June 30, 2014; 3.7 million average options for the three months ended June 30, 2013; and 3.9 million average options for the six months ended June 30, 2013). 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)			2014		2013		2014		2013
	Numerator:
		Net income attributable to 3M		$	1,267	$	1,197	$	2,474	$	2,326
	Denominator:
		Denominator for weighted average 3M common shares
			outstanding – basic		652		688.2		656.7		689.6
		Dilution associated with the Company’s stock-based
			compensation plans		12.6		10.9		12.9		11
		Denominator for weighted average 3M common shares
			outstanding – diluted		664.6		699.1		669.6		700.6
	Earnings per share attributable to 3M common
		shareholders – basic		$	1.94	$	1.74	$	3.77	$	3.37
	Earnings per share attributable to 3M common
		shareholders – diluted		$	1.91	$	1.71	$	3.7	$	3.32

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2014
Significant Accounting Policies	'
Earnings per share	'
	Earnings Per Share Computations
				Three months ended				Six months ended
				June 30,				June 30,
	(Amounts in millions, except per share amounts)			2014		2013		2014		2013
	Numerator:
		Net income attributable to 3M		$	1,267	$	1,197	$	2,474	$	2,326
	Denominator:
		Denominator for weighted average 3M common shares
			outstanding – basic		652		688.2		656.7		689.6
		Dilution associated with the Company’s stock-based
			compensation plans		12.6		10.9		12.9		11
		Denominator for weighted average 3M common shares
			outstanding – diluted		664.6		699.1		669.6		700.6
	Earnings per share attributable to 3M common
		shareholders – basic		$	1.94	$	1.74	$	3.77	$	3.37
	Earnings per share attributable to 3M common
		shareholders – diluted		$	1.91	$	1.71	$	3.7	$	3.32

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Goodwill and Intangible Assets	'
Goodwill	'
			31-Dec-13			Acquisition			Translation		30-Jun-14
	(Millions)		Balance			activity			and other		Balance
	Industrial		$	2,166		$	―		$	10	$	2,176
	Safety and Graphics			1,740			―			-2		1,738
	Electronics and Energy			1,612			―			1		1,613
	Health Care			1,596			65			1		1,662
	Consumer			231			―			2		233
	Total Company		$	7,345		$	65		$	12	$	7,422
Acquired Intangible Assets	'
				June 30,			December 31,
	(Millions)			2014			2013
	Customer related intangible assets			$	1,409		$	1,411
	Patents				601			602
	Other technology-based intangible assets				422			406
	Definite-lived tradenames				410			411
	Other amortizable intangible assets				225			217
	Total gross carrying amount			$	3,067		$	3,047
	Accumulated amortization — customer related				-563			-514
	Accumulated amortization — patents				-474			-458
	Accumulated amortization — other technology-based				-203			-179
	Accumulated amortization — definite-lived tradenames				-187			-178
	Accumulated amortization — other				-166			-159
	Total accumulated amortization			$	-1,593		$	-1,488
		Total finite-lived intangible assets — net		$	1,474		$	1,559
	Non-amortizable intangible assets (primarily tradenames)				129			129
		Total intangible assets — net		$	1,603		$	1,688
Schedule of amortization expense for acquired intangible assets	'
	Amortization expense for acquired intangible assets for the three-month and six-month periods ended June 30, 2014 and 2013 follows:
			Three months ended						Six months ended
			June 30,						June 30,
	(Millions)		2014			2013			2014		2013
	Amortization expense		$	57		$	60		$	114	$	120
Schedule of expected amortization expense for acquired amortizable intangible assets	'
	The table below shows expected amortization expense for acquired amortizable intangible assets recorded as of June 30, 2014:
	(Millions)		Remainder
			of															After
			2014			2015			2016		2017		2018		2019		2019
	Amortization expense		$	109		$	206		$	193	$	177	$	160	$	148	$	481

Supplemental_Equity_and_Compre1

Supplemental Equity and Comprehensive Income Information (Tables)	6 Months Ended
	Jun. 30, 2014
Supplemental Equity and Comprehensive Income Information	'
Consolidated Statement of Changes in Equity	'
	Three months ended June 30, 2014					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at March 31, 2014		$	17,924		$	4,554		$	33,312		$	-16,577		$	-3,841		$	476
	Net income			1,283						1,267									16
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			127												123			4
	Defined benefit pension and post-retirement
		plans adjustment		60												60			―
	Debt and equity securities - unrealized gain (loss)			1												1			―
	Cash flow hedging instruments - unrealized
		gain (loss)		-9												-9			―
	Total other comprehensive income (loss), net
		of tax		179
	Dividends declared			-556						-556
	Purchase of subsidiary shares			-5			-1												-4
	Stock-based compensation, net of tax impacts			97			97
	Reacquired stock			-1,382									-1,382
	Issuances pursuant to stock option and
		benefit plans		306						-187			493
	Balance at June 30, 2014		$	17,846		$	4,650		$	33,836		$	-17,466		$	-3,666		$	492
	Six months ended June 30, 2014					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at December 31, 2013		$	17,948		$	4,384		$	32,416		$	-15,385		$	-3,913		$	446
	Net income			2,508						2,474									34
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			147												131			16
	Defined benefit pension and post-retirement
		plans adjustment		121												121			―
	Debt and equity securities - unrealized gain (loss)			2												2			―
	Cash flow hedging instruments - unrealized
		gain (loss)		-7												-7			―
	Total other comprehensive income (loss),
		net of tax		263
	Dividends declared			-555						-555
	Purchase of subsidiary shares			-5			-1												-4
	Stock-based compensation, net of tax impacts			267			267
	Reacquired stock			-3,155									-3,155
	Issuances pursuant to stock option and
		benefit plans		575						-499			1,074
	Balance at June 30, 2014		$	17,846		$	4,650		$	33,836		$	-17,466		$	-3,666		$	492
	Three months ended June 30, 2013					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at March 31, 2013		$	18,528		$	4,188		$	31,073		$	-12,178		$	-5,001		$	446
	Net income			1,213						1,197									16
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustment			-279												-260			-19
	Defined benefit pension and post-retirement
		plans adjustment		91												91			―
	Debt and equity securities - unrealized gain (loss)			-4												-4			―
	Cash flow hedging instruments - unrealized
		gain (loss)		8												8			―
	Total other comprehensive income (loss), net
		of tax		-184
	Dividends declared			-436						-436
	Stock-based compensation, net of tax impacts			64			64
	Reacquired stock			-1,232									-1,232
	Issuances pursuant to stock option and
		benefit plans		366						-118			484
	Balance at June 30, 2013		$	18,319		$	4,252		$	31,716		$	-12,926		$	-5,166		$	443
	Six months ended June 30, 2013					3M Company Shareholders
	(Millions)		Total			Common Stock and Additional Paid-in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehen-sive Income (Loss)			Non-controlling Interest
	Balance at December 31, 2012		$	18,040		$	4,053		$	30,679		$	-12,407		$	-4,750		$	465
	Net income			2,360						2,326									34
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment			-677												-620			-57
Defined benefit pension and post-retirement
	plans adjustment		176												176			―
Debt and equity securities - unrealized gain (loss)			-4												-4			―
Cash flow hedging instruments - unrealized
	gain (loss)		32												32			―
Total other comprehensive income (loss),
	net of tax		-473
Dividends declared			-876						-876
Sale of subsidiary shares			8			7												1
Stock-based compensation, net of tax impacts			192			192
Reacquired stock			-2,039									-2,039
Issuances pursuant to stock option and
	benefit plans		1,107						-413			1,520
Balance at June 30, 2013		$	18,319		$	4,252		$	31,716		$	-12,926		$	-5,166		$	443
Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M	'
	Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component
	Three months ended June 30, 2014
	(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
	Balance at March 31, 2014, net of tax				$	-180		$	-3,654		$	-1		$	-6		$	-3,841
	Other comprehensive income (loss),
		before tax:
		Amounts before reclassifications				128			―			1			-21			108
		Amounts reclassified out				―			92			―			5			97
	Total other comprehensive income (loss),
		before tax				128			92			1			-16			205
	Tax effect					-5			-32			―			7			-30
	Total other comprehensive income (loss),
		net of tax				123			60			1			-9			175
	Balance at June 30, 2014, net of tax				$	-57		$	-3,594		$	―		$	-15		$	-3,666
	Six months ended June 30, 2014
	(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
	Balance at December 31, 2013, net of tax				$	-188		$	-3,715		$	-2		$	-8		$	-3,913
	Other comprehensive income (loss),
		before tax:
		Amounts before reclassifications				134			―			3			-12			125
		Amounts reclassified out				―			183			―			-1			182
	Total other comprehensive income (loss),
		before tax				134			183			3			-13			307
	Tax effect					-3			-62			-1			6			-60
	Total other comprehensive income (loss),
		net of tax				131			121			2			-7			247
	Balance at June 30, 2014, net of tax				$	-57		$	-3,594		$	―		$	-15		$	-3,666
	Three months ended June 30, 2013
	(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
	Balance at March 31, 2013, net of tax				$	-130		$	-4,870		$	-2		$	1		$	-5,001
	Other comprehensive income (loss),
		before tax:
		Amounts before reclassifications				-260			―			-6			-79			-345
		Amounts reclassified out				―			144			―			91			235
	Total other comprehensive income (loss),
		before tax				-260			144			-6			12			-110
	Tax effect					―			-53			2			-4			-55
	Total other comprehensive income (loss),
		net of tax				-260			91			-4			8			-165
	Balance at June 30, 2013, net of tax				$	-390		$	-4,779		$	-6		$	9		$	-5,166
	Six months ended June 30, 2013
	(Millions)				Cumulative Translation Adjustment			Defined Benefit Pension and Postretirement Plans Adjustment			Debt and Equity Securities, Unrealized Gain (Loss)			Cash Flow Hedging Instruments, Unrealized Gain (Loss)			Total Accumulated Other Comprehen-sive Income (Loss)
	Balance at December 31, 2012, net of tax				$	230		$	-4,955		$	-2		$	-23		$	-4,750
	Other comprehensive income (loss),
		before tax:
		Amounts before reclassifications				-584			―			-6			-114			-704
		Amounts reclassified out				―			287			―			164			451
	Total other comprehensive income (loss),
		before tax				-584			287			-6			50			-253
	Tax effect					-36			-111			2			-18			-163
	Total other comprehensive income (loss),
		net of tax				-620			176			-4			32			-416
	Balance at June 30, 2013, net of tax				$	-390		$	-4,779		$	-6		$	9		$	-5,166
Reclassifications Out of Accumulated Other Comprehensive Income	'
	Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M
				Amount Reclassified from
				Accumulated Other Comprehensive Income
	(Millions)		Three months ended June 30,						Six months ended June 30,						Location on Income Statement
	Details about Accumulated Other Comprehensive Income Components		2014			2013			2014			2013
	Gains (losses) associated with, defined benefit pension and postretirement plans amortization
		Transition asset	$	―		$	―		$	―		$	1		See Note 8
		Prior service benefit		15			20			30			40		See Note 8
		Net actuarial loss		-107			-164			-213			-328		See Note 8
	Total before tax			-92			-144			-183			-287
	Tax effect			32			53			62			111		Provision for income taxes
	Net of tax		$	-60		$	-91		$	-121		$	-176
	Debt and equity security gains (losses)
		Sales or impairments of securities	$	―		$	―		$	―		$	―		Selling, general and administrative expenses
	Total before tax			―			―			―			―
	Tax effect			―			―			―			―		Provision for income taxes
	Net of tax		$	―		$	―		$	―		$	―
	Cash flow hedging instruments gains (losses)
		Foreign currency forward/option contracts	$	-6		$	-3		$	-2		$	-9		Cost of sales
		Foreign currency forward contracts		―			-89			―			-155		Interest expense
		Commodity price swap contracts		1			1			3			―		Cost of sales
	Total before tax			-5			-91			1			-164
	Tax effect			2			32			―			59		Provision for income taxes
	Net of tax		$	-3		$	-59		$	1		$	-105
	Total reclassifications for the period, net of tax		$	-63		$	-150		$	-120		$	-281

Marketable_Securities_Tables

Marketable Securities (Tables)	6 Months Ended
	Jun. 30, 2014
Marketable Securities	'
Schedule of Marketable Securities	'
				June 30,		December 31,
	(Millions)			2014		2013
	U.S. government agency securities			$	78	$	103
	Foreign government agency securities				70		30
	Corporate debt securities				182		143
	Commercial paper				―		60
	Certificates of deposit/time deposits				38		20
	U.S. municipal securities				―		2
	Asset-backed securities:
		Automobile loan related			297		287
		Credit card related			137		52
		Equipment lease related			63		30
		Other			19		29
	Asset-backed securities total				516		398
	Current marketable securities			$	884	$	756
	U.S. government agency securities			$	70	$	131
	Foreign government agency securities				50		95
	Corporate debt securities				614		638
	Certificates of deposit/time deposits				10		20
	U.S. treasury securities				49		49
	Auction rate securities				12		11
	Asset-backed securities:
		Automobile loan related			240		298
		Credit card related			85		128
		Equipment lease related			25		37
		Other			49		46
	Asset-backed securities total				399		509
	Non-current marketable securities			$	1,204	$	1,453
	Total marketable securities			$	2,088	$	2,209
Marketable securities by contractual maturity	'
	(Millions)		30-Jun-14
	Due in one year or less		$	329
	Due after one year through five years			1,737
	Due after five years through ten years			22
	Due after ten years			―
	Total marketable securities		$	2,088

Pension_and_Postretirement_Ben1

Pension and Postretirement Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2014
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)		2014		2013		2014		2013		2014		2013
	Net periodic benefit cost (benefit)
		Service cost	$	60	$	64	$	35	$	36	$	17	$	20
		Interest cost		169		149		65		61		24		22
		Expected return on plan assets		-261		-261		-80		-75		-23		-23
		Amortization of transition (asset) obligation		―		―		―		―		―		―
		Amortization of prior service cost (benefit)		1		1		-4		-5		-12		-16
		Amortization of net actuarial (gain) loss		61		100		31		40		15		24
	Net periodic benefit cost (benefit)		$	30	$	53	$	47	$	57	$	21	$	27
	Settlements, curtailments, special termination benefits and other			―		―		―		―		―		―
	Net periodic benefit cost (benefit) after settlements, curtailments,
		special termination benefits and other	$	30	$	53	$	47	$	57	$	21	$	27
			Six months ended June 30,
			Qualified and Non-qualified
			Pension Benefits								Postretirement
			United States				International				Benefits
	(Millions)		2014		2013		2014		2013		2014		2013
	Net periodic benefit cost (benefit)
		Service cost	$	120	$	128	$	71	$	72	$	33	$	40
		Interest cost		338		299		129		122		48		44
		Expected return on plan assets		-522		-522		-159		-150		-45		-45
		Amortization of transition (asset) obligation		―		―		―		-1		―		―
		Amortization of prior service cost (benefit)		2		2		-8		-9		-24		-33
		Amortization of net actuarial (gain) loss		122		200		62		80		29		48
	Net periodic benefit cost (benefit)		$	60	$	107	$	95	$	114	$	41	$	54
	Settlements, curtailments, special termination benefits and other			―		―		―		―		―		―
	Net periodic benefit cost (benefit) after settlements, curtailments,
		special termination benefits and other	$	60	$	107	$	95	$	114	$	41	$	54

Derivatives_Tables

Derivatives (Tables)

6 Months Ended

Jun. 30, 2014

Derivatives

'

Gain (loss) on derivative instruments designated as cash flow hedges

'

Three months ended June 30, 2014

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

-20

Cost of sales

$

-6

Cost of sales

$

―

Commodity price swap contracts

-1

Cost of sales

1

Cost of sales

―

Total

$

-21

$

-5

$

―

Six months ended June 30, 2014

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

-13

Cost of sales

$

-2

Cost of sales

$

―

Commodity price swap contracts

1

Cost of sales

3

Cost of sales

―

Total

$

-12

$

1

$

―

Three months ended June 30, 2013

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

10

Cost of sales

$

-3

Cost of sales

$

―

Foreign currency forward contracts

-86

Interest expense

-89

Interest expense

―

Commodity price swap contracts

-3

Cost of sales

1

Cost of sales

―

Total

$

-79

$

-91

$

―

Six months ended June 30, 2013

(Millions)

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective Portion of Derivative

Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income

Ineffective Portion of Gain (Loss) on Derivative and Amount Excluded from Effectiveness Testing Recognized in Income

Derivatives in Cash Flow Hedging Relationships

Amount

Location

Amount

Location

Amount

Foreign currency forward/option contracts

$

41

Cost of sales

$

-9

Cost of sales

$

―

Foreign currency forward contracts

-154

Interest expense

-155

Interest expense

―

Commodity price swap contracts

-1

Cost of sales

―

Cost of sales

―

Total

$

-114

$

-164

$

―

Gain (loss) on derivative instruments designated as fair value hedges

'

Three months ended June 30, 2014

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

6

Interest expense

$

-6

Total

$

6

$

-6

Six months ended June 30, 2014

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

13

Interest expense

$

-13

Total

$

13

$

-13

Three months ended June 30, 2013

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

-3

Interest expense

$

3

Total

$

-3

$

3

Six months ended June 30, 2013

Gain (Loss) on Derivative

Gain (Loss) on Hedged Item

(Millions)

Recognized in Income

Recognized in Income

Derivatives in Fair Value Hedging Relationships

Location

Amount

Location

Amount

Interest rate swap contracts

Interest expense

$

-8

Interest expense

$

8

Total

$

-8

$

8

Gain (loss) on derivative and non-derivative instruments designated as net investment hedges

'

Three months ended June 30, 2014

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-18

N/A

$

―

Foreign currency forward contracts

1

N/A

―

Total

$

-17

$

―

Six months ended June 30, 2014

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-27

N/A

$

―

Foreign currency forward contracts

1

N/A

―

Total

$

-26

$

―

Three months ended June 30, 2013

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

-24

N/A

$

―

Total

$

-24

$

―

Six months ended June 30, 2013

Derivative and Nonderivative Instruments in Net Investment Hedging Relationships

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

Ineffective Portion of Gain (Loss) on Instrument and Amount Excluded from Effectiveness Testing Recognized in Income

(Millions)

Amount

Location

Amount

Foreign currency denominated debt

$

17

N/A

$

―

Total

$

17

$

―

Gain (loss) on derivative instruments not designated as hedging instruments

'

Derivatives Not Designated as Hedging Instruments

Three months ended June 30, 2014

Six months ended June 30, 2014

Gain (Loss) on Derivative Recognized in Income

Gain (Loss) on Derivative Recognized in Income

(Millions)

Location

Amount

Location

Amount

Foreign currency forward/option contracts

Cost of sales

$

-2

Cost of sales

$

-3

Foreign currency forward contracts

Interest expense

35

Interest expense

68

Total

$

33

$

65

Derivatives Not Designated as Hedging Instruments

Three months ended June 30, 2013

Six months ended June 30, 2013

Gain (Loss) on Derivative Recognized in Income

Gain (Loss) on Derivative Recognized in Income

(Millions)

Location

Amount

Location

Amount

Foreign currency forward/option contracts

Cost of sales

$

21

Cost of sales

$

31

Foreign currency forward contracts

Interest expense

-27

Interest expense

-6

Commodity price swap contracts

Cost of sales

-1

Cost of sales

-1

Total

$

-7

$

24

Location and Fair Value of Derivative Instruments

'

30-Jun-14

(Millions)

Assets

Liabilities

Fair Value of Derivative Instruments

Location

Amount

Location

Amount

Derivatives designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

12

Other current liabilities

$

23

Commodity price swap contracts

Other current assets

1

Other current liabilities

1

Interest rate swap contracts

Other assets

17

Other liabilities

2

Total derivatives designated as

hedging instruments

$

30

$

26

Derivatives not designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

40

Other current liabilities

$

31

Total derivatives not designated as

hedging instruments

$

40

$

31

Total derivative instruments

$

70

$

57

December 31, 2013

(Millions)

Assets

Liabilities

Fair Value of Derivative Instruments

Location

Amount

Location

Amount

Derivatives designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

24

Other current liabilities

$

35

Commodity price swap contracts

Other current assets

1

Other current liabilities

―

Interest rate swap contracts

Other assets

8

Other liabilities

7

Total derivatives designated as

hedging instruments

$

33

$

42

Derivatives not designated as hedging instruments

Foreign currency forward/option contracts

Other current assets

$

51

Other current liabilities

$

68

Total derivatives not designated as

hedging instruments

$

51

$

68

Total derivative instruments

$

84

$

110

Offsetting Assets

'

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

30-Jun-14

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Liabilities

Cash Collateral Received

Net Amount of Derivative Assets

Derivatives subject to master

netting agreements

$

69

$

33

$

―

$

36

Derivatives not subject to master

netting agreements

1

1

Total

$

70

$

37

31-Dec-13

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Assets Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Liabilities

Cash Collateral Received

Net Amount of Derivative Assets

Derivatives subject to master

netting agreements

$

83

$

51

$

―

$

32

Derivatives not subject to master

netting agreements

1

1

Total

$

84

$

33

Offsetting Liabilities

'

30-Jun-14

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Assets

Cash Collateral Pledged

Net Amount of Derivative Liabilities

Derivatives subject to master

netting agreements

$

57

$

33

$

―

$

24

Derivatives not subject to master

netting agreements

―

―

Total

$

57

$

24

31-Dec-13

Gross Amounts not Offset in the Consolidated Balance Sheet that are Subject to Master Netting Agreements

(Millions)

Gross Amount of Derivative Liabilities Presented in the Consolidated Balance Sheet

Gross Amount of Eligible Offsetting Recognized Derivative Assets

Cash Collateral Pledged

Net Amount of Derivative Liabilities

Derivatives subject to master

netting agreements

$

110

$

51

$

―

$

59

Derivatives not subject to master

netting agreements

―

―

Total

$

110

$

59

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Measurements

'

Fair Value, Assets and Liabilities Measured on Recurring Basis

'

Fair Value Measurements

(Millions)

Fair Value at

Using Inputs Considered as

Description

30-Jun-14

Level 1

Level 2

Level 3

Assets:

Available-for-sale:

Marketable securities:

U.S. government agency securities

$

148

$

―

$

148

$

―

Foreign government agency securities

120

―

120

―

Corporate debt securities

796

―

796

―

Certificates of deposit/time deposits

48

―

48

―

Asset-backed securities:

Automobile loan related

537

―

537

―

Credit card related

222

―

222

―

Equipment lease related

88

―

88

―

Other

68

―

68

―

U.S. treasury securities

49

49

―

―

Auction rate securities

12

―

―

12

Investments

1

1

―

―

Derivative instruments — assets:

Foreign currency forward/option contracts

52

52

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

17

―

17

―

Liabilities:

Derivative instruments — liabilities:

Foreign currency forward/option contracts

54

54

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

2

―

2

―

Fair Value at

Fair Value Measurements

(Millions)

31-Dec-13

Using Inputs Considered as

Description

Level 1

Level 2

Level 3

Assets:

Available-for-sale:

Marketable securities:

U.S. government agency securities

$

234

$

―

$

234

$

―

Foreign government agency securities

125

―

125

―

Corporate debt securities

781

―

781

―

Certificates of deposit/time deposits

40

―

40

―

Commercial paper

60

―

60

―

Asset-backed securities:

Automobile loan related

585

―

585

―

Credit card related

180

―

180

―

Equipment lease related

67

―

67

―

Other

75

―

75

―

U.S. treasury securities

49

49

―

―

U.S. municipal securities

2

―

2

―

Auction rate securities

11

―

―

11

Investments

2

2

―

―

Derivative instruments — assets:

Foreign currency forward/option contracts

75

75

―

―

Commodity price swap contracts

1

1

―

―

Interest rate swap contracts

8

―

8

―

Liabilities:

Derivative instruments — liabilities:

Foreign currency forward/option contracts

103

103

―

―

Interest rate swap contracts

7

―

7

―

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

'

Three months ended

Six months ended

(Millions)

June 30,

June 30,

Marketable securities – auction rate securities only

2014

2013

2014

2013

Beginning balance

$

12

$

7

$

11

$

7

Total gains or losses:

Included in earnings

―

―

―

―

Included in other comprehensive income

―

3

1

3

Purchases, issuances, and settlements

―

―

―

―

Transfers in and/or out of Level 3

―

―

―

―

Ending balance

12

10

12

10

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

'

30-Jun-14

31-Dec-13

Carrying

Fair

Carrying

Fair

(Millions)

Value

Value

Value

Value

Eurobond securities due July 2014

$

1,396

$

1,398

$

1,424

$

1,447

Long-term debt, excluding current portion

5,323

5,575

4,326

4,463

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies	'
Accrued Liabilities and Insurance Receivables Related to Legal Proceedings	'
	Liability and Receivable Balances
	(Millions)		30-Jun-14		31-Dec-13
	Respirator mask/asbestos liabilities	$	153	$	152
	Respirator mask/asbestos insurance receivables		47		58
	Environmental remediation liabilities	$	26	$	27
	Environmental remediation insurance receivables		11		11
	Other environmental liabilities	$	45	$	48
	Other environmental insurance receivables		15		15

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2014
Stock-Based Compensation	'
Stock-Based Compensation Expense	'
	Stock-Based Compensation Expense
			Three months ended						Six months ended
			June 30,						June 30,
	(Millions)		2014			2013			2014		2013
	Cost of sales		$	11		$	6		$	33	$	18
	Selling, general and administrative expenses		35			36			112		113
	Research, development and related expenses		6			5			29		19
	Stock-based compensation expenses		$	52		$	47		$	174	$	150
	Income tax benefits		$	-13		$	-13		$	-53	$	-45
	Stock-based compensation expenses, net of tax		$	39		$	34		$	121	$	105
Stock Option Activity	'
	The following table summarizes stock option activity during the six months ended June 30, 2014:
	Stock Option Program
					Number of Options		Weighted Average Exercise Price			Weighted Average Remaining Contractual Life (months)	Aggregate Intrinsic Value (millions)
	Under option —
		January 1			43,938,778		$	83.84
		Granted:
			Annual		5,736,183			126.77
		Exercised			-6,229,925			83.02
		Canceled			-154,922			103.29
		30-Jun			43,290,114		$	89.58		68	$	2,323
	Options exercisable
		30-Jun			31,486,006		$	81.41		53	$	1,947
Stock Option Assumptions	'
			Annual
	Stock Option Assumptions		2014
	Exercise price		$	126.72
	Risk-free interest rate			1.9	%
	Dividend yield			2.6	%
	Expected volatility			20.8	%
	Expected life (months)			75
	Black-Scholes fair value		$	19.63
Restricted Stock Units and Restricted Stock Activity	'
	Restricted Stock Units and Restricted Stock
								Weighted Average
	Restricted Stock Units and					Number of		Grant Date
	Restricted Stock					Awards		Fair Value
	Nonvested balance —
		As of January 1				3,105,361		$	92.31
			Granted:
				Annual		798,615			126.79
				Other		15,647			141.58
			Vested			-1,066,382			90.63
			Forfeited			-33,543			100.63
		As of June 30				2,819,698		$	102.89
Performance Shares Activity	'
								Weighted Average
						Number of		Grant Date
	Performance Shares					Awards		Fair Value
	Undistributed balance —
		As of January 1				895,635		$	88.12
			Granted			285,149			123.88
			Distributed			-277,357			84.74
			Performance change			59,443			114.15
			Forfeited			-6,501			102.45
		As of June 30				956,369		$	101.28

Business_Segments_Tables

Business Segments (Tables)	6 Months Ended
	Jun. 30, 2014
Business Segments	'
Business Segment Information	'
	Business Segment Information	Three months ended				Six months ended
		June 30,				June 30,
	(Millions)	2014		2013		2014		2013
	Net Sales
	Industrial	$	2,815	$	2,683	$	5,591	$	5,376
	Safety and Graphics		1,494		1,434		2,917		2,833
	Electronics and Energy		1,422		1,340		2,733		2,617
	Health Care		1,416		1,336		2,790		2,647
	Consumer		1,139		1,098		2,218		2,179
	Corporate and Unallocated		-1		1		2		3
	Elimination of Dual Credit		-151		-140		-286		-269
	Total Company	$	8,134	$	7,752	$	15,965	$	15,386
	Operating Income
	Industrial	$	617	$	603	$	1,235	$	1,182
	Safety and Graphics		353		328		671		660
	Electronics and Energy		293		237		520		433
	Health Care		434		417		861		821
	Consumer		241		235		469		472
	Corporate and Unallocated		-49		-87		-121		-161
	Elimination of Dual Credit		-33		-31		-63		-59
	Total Company	$	1,856	$	1,702	$	3,572	$	3,348

Significant_Accounting_Policie3

Significant Accounting Policies (Details)	3 Months Ended		6 Months Ended		12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014
	USD ($)	USD ($)	USD ($)	USD ($)		VEF
Foreign Currency Translation	'	'	'	'	'	'
Threshold percentage used to determine if economic environment is highly inflationary	'	'	100.00%	'	'	'
Number of years used to determine if economic environment is highly inflationary	'	'	'3 years	'	'	'
Operating income of Venezuelan subsidiary as percent of consolidated amount high end of range	'	'	'	'	1.00%	'
Cumulative inflation rate of Venezuela in November 2009 and since, low end of range	'	'	100.00%	'	'	'
Maximum balance of company's net monetary liabilities in Venezuelan bolivars	'	'	'	'	'	115
Exchange rate established by Venezuelan government from bolivars to dollars - SICAD1	'	'	'	'	'	10
Exchange rate established by Venezuelan government from bolivars to dollars - SICAD2	'	'	'	'	'	50
Earnings per share	'	'	'	'	'	'
Options outstanding not included in computation of diluted earnings per share (in shares)	3.1	3.7	2.7	3.9	'	'
Numerator:	'	'	'	'	'	'
Net income attributable to 3M	$1,267	$1,197	$2,474	$2,326	'	'
Denominator:	'	'	'	'	'	'
Denominator for weighted average 3M common shares outstanding - basic (in shares)	652	688.2	656.7	689.6	'	'
Dilution associated with the Company's stock-based compensation plans (in shares)	12.6	10.9	12.9	11	'	'
Denominator for weighted average 3M common shares outstanding - diluted (in shares)	664.6	699.1	669.6	700.6	'	'
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$1.94	$1.74	$3.77	$3.37	'	'
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$1.91	$1.71	$3.70	$3.32	'	'

Significant_Accounting_Policie4

Significant Accounting Policies (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Significant Accounting Policies	'	'	'	'	'
Research, development and related expenses	$448	$427	$900	$857	'
Deferred tax assets valuation allowance	$28	'	$28	'	$23

Acquisitions_Details

Acquisitions (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Business Acquisitions Information	'	'
Purchased finite-lived intangible assets	$34	'
Supplemental information:	'	'
Cash paid, net of cash acquired	$94	$0
Maximum [Member]	'	'
Finite Lived Intangible Assets	'	'
Intangible assets useful life	'10 years	'
Minimum [Member]	'	'
Finite Lived Intangible Assets	'	'
Intangible assets useful life	'3 years	'
Weighted Average [Member]	'	'
Finite Lived Intangible Assets	'	'
Intangible assets useful life	'6 years	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Goodwill balance by business segment) (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Goodwill Information	'
Purchased goodwill	$65
Goodwill	'
Balance at the beginning of the period	7,345
Acquisition activity	65
Translation and other	12
Balance at the end of the period	7,422
Industrial	'
Goodwill	'
Balance at the beginning of the period	2,166
Acquisition activity	0
Translation and other	10
Balance at the end of the period	2,176
Safety and Graphics	'
Goodwill	'
Balance at the beginning of the period	1,740
Acquisition activity	0
Translation and other	-2
Balance at the end of the period	1,738
Electronics and Energy	'
Goodwill	'
Balance at the beginning of the period	1,612
Acquisition activity	0
Translation and other	1
Balance at the end of the period	1,613
Health Care	'
Goodwill	'
Balance at the beginning of the period	1,596
Acquisition activity	65
Translation and other	1
Balance at the end of the period	1,662
Consumer	'
Goodwill	'
Balance at the beginning of the period	231
Acquisition activity	0
Translation and other	2
Balance at the end of the period	$233

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Acquired intangible assets disclosures	'	'
Total gross carrying amount	$3,067	$3,047
Total accumulated amortization	-1,593	-1,488
Total finite-lived intangible assets - net	1,474	1,559
Non-amortizable intangible assets (primarily tradenames)	129	129
Total intangible assets - net	1,603	1,688
Customer related intangible assets	'	'
Acquired intangible assets disclosures	'	'
Total gross carrying amount	1,409	1,411
Total accumulated amortization	-563	-514
Patents	'	'
Acquired intangible assets disclosures	'	'
Total gross carrying amount	601	602
Total accumulated amortization	-474	-458
Other technology-based intangible assets	'	'
Acquired intangible assets disclosures	'	'
Total gross carrying amount	422	406
Total accumulated amortization	-203	-179
Definite-lived tradenames	'	'
Acquired intangible assets disclosures	'	'
Total gross carrying amount	410	411
Total accumulated amortization	-187	-178
Other amortizable intangible assets	'	'
Acquired intangible assets disclosures	'	'
Total gross carrying amount	225	217
Total accumulated amortization	($166)	($159)

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets (Schedules for Amortization Expense) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite Lived Intangible Assets	'	'	'	'
Amortization expense for acquired intangible assets	$57	$60	$114	$120
Expected amortization expense for acquired intangible assets recorded as of balance sheet date	'	'	'	'
Remainder of 2014	109	'	109	'
2015	206	'	206	'
2016	193	'	193	'
2017	177	'	177	'
2018	160	'	160	'
2019	148	'	148	'
After 2019	$481	'	$481	'

Supplemental_Balance_Sheet_Inf

Supplemental Balance Sheet Information (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Other current assets	'	'
Other current assets	$1,332	$1,279
Investments	'	'
Total investments	113	122
Other assets	'	'
Total other assets	1,078	980
Other current liabilities	'	'
Dividends payable	'	567
Total other current liabilities	2,412	2,891
Other liabilities	'	'
Total other liabilities	$1,932	$1,984

Supplemental_Balance_Sheet_Inf1

Supplemental Balance Sheet Information (Details 1) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Property Plant And Equipment [Line Items]	'	'
Gross property, plant and equipment	$23,447	$23,068
Less: Accumulated depreciation	-14,762	-14,416
Property, Plant and Equipment - net	$8,685	$8,652

Supplemental_Equity_and_Compre2

Supplemental Equity and Comprehensive Income Information (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	$17,924	$18,528	$17,948	$18,040
Net income	1,283	1,213	2,508	2,360
Other comprehensive income (loss), net of tax:	'	'	'	'
Cumulative translation adjustment	127	-279	147	-677
Defined benefit pension and postretirement plans adjustment	60	91	121	176
Debt and equity securities - unrealized gain (loss)	1	-4	2	-4
Cash flow hedging instruments - unrealized gain (loss)	-9	8	-7	32
Total other comprehensive income (loss), net of tax	179	-184	263	-473
Dividends declared	-556	-436	-555	-876
Purchase transfer from non-controlling interest	-5	'	-5	'
Sale of subsidiary shares	'	'	'	8
Stock-based compensation, net of tax impacts	97	64	267	192
Reacquired stock	-1,382	-1,232	-3,155	-2,039
Issuances pursuant to stock option and benefit plans	306	366	575	1,107
Balance at the end of the period	17,846	18,319	17,846	18,319
Common Stock and Additional Paid-in Capital	'	'	'	'
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	4,554	4,188	4,384	4,053
Other comprehensive income (loss), net of tax:	'	'	'	'
Purchase transfer from non-controlling interest	-1	'	-1	'
Sale of subsidiary shares	'	'	'	7
Stock-based compensation, net of tax impacts	97	64	267	192
Balance at the end of the period	4,650	4,252	4,650	4,252
Retained Earnings	'	'	'	'
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	33,312	31,073	32,416	30,679
Net income	1,267	1,197	2,474	2,326
Other comprehensive income (loss), net of tax:	'	'	'	'
Dividends declared	-556	-436	-555	-876
Issuances pursuant to stock option and benefit plans	-187	-118	-499	-413
Balance at the end of the period	33,836	31,716	33,836	31,716
Treasury Stock	'	'	'	'
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	-16,577	-12,178	-15,385	-12,407
Other comprehensive income (loss), net of tax:	'	'	'	'
Reacquired stock	-1,382	-1,232	-3,155	-2,039
Issuances pursuant to stock option and benefit plans	493	484	1,074	1,520
Balance at the end of the period	-17,466	-12,926	-17,466	-12,926
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	-3,841	-5,001	-3,913	-4,750
Other comprehensive income (loss), net of tax:	'	'	'	'
Cumulative translation adjustment	123	-260	131	-620
Defined benefit pension and postretirement plans adjustment	60	91	121	176
Debt and equity securities - unrealized gain (loss)	1	-4	2	-4
Cash flow hedging instruments - unrealized gain (loss)	-9	8	-7	32
Balance at the end of the period	-3,666	-5,166	-3,666	-5,166
Noncontrolling Interest	'	'	'	'
Increase (decrease) in equity	'	'	'	'
Balance at the beginning of the period	476	446	446	465
Net income	16	16	34	34
Other comprehensive income (loss), net of tax:	'	'	'	'
Cumulative translation adjustment	4	-19	16	-57
Defined benefit pension and postretirement plans adjustment	0	0	0	0
Debt and equity securities - unrealized gain (loss)	0	0	0	0
Cash flow hedging instruments - unrealized gain (loss)	0	0	0	0
Purchase transfer from non-controlling interest	-4	'	-4	'
Sale of subsidiary shares	'	'	'	1
Balance at the end of the period	$492	$443	$492	$443

Supplemental_Equity_and_Compre3

Supplemental Equity and Comprehensive Income Information (Details 1) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Supplemental Equity and Comprehensive Income Information	'	'
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)	296,063,909	280,736,817

Supplemental_Equity_and_Compre4

Supplemental Equity and Comprehensive Income Information (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Balance at Beginning of Period	($3,841)	($5,001)	($3,913)	($4,750)
Other comprehensive income (loss), before tax:	'	'	'	'
Amounts before reclassification	108	-345	125	-704
Amounts reclassified out	97	235	182	451
Total other comprehensive income (loss), before tax	205	-110	307	-253
Tax effect	-30	-55	-60	-163
Total other comprehensive income (loss), net of tax	175	-165	247	-416
Balance at End of Period	-3,666	-5,166	-3,666	-5,166
Cumulative Translation Adjustment	'	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Balance at Beginning of Period	-180	-130	-188	230
Other comprehensive income (loss), before tax:	'	'	'	'
Amounts before reclassification	128	-260	134	-584
Amounts reclassified out	0	0	0	0
Total other comprehensive income (loss), before tax	128	-260	134	-584
Tax effect	-5	0	-3	-36
Total other comprehensive income (loss), net of tax	123	-260	131	-620
Balance at End of Period	-57	-390	-57	-390
Defined Benefit Pension and Postretirement Plans Adjustment	'	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Balance at Beginning of Period	-3,654	-4,870	-3,715	-4,955
Other comprehensive income (loss), before tax:	'	'	'	'
Amounts before reclassification	0	0	0	0
Amounts reclassified out	92	144	183	287
Total other comprehensive income (loss), before tax	92	144	183	287
Tax effect	-32	-53	-62	-111
Total other comprehensive income (loss), net of tax	60	91	121	176
Balance at End of Period	-3,594	-4,779	-3,594	-4,779
Debt and Equity Securities, Unrealized Gain (Loss)	'	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Balance at Beginning of Period	-1	-2	-2	-2
Other comprehensive income (loss), before tax:	'	'	'	'
Amounts before reclassification	1	-6	3	-6
Amounts reclassified out	0	0	0	0
Total other comprehensive income (loss), before tax	1	-6	3	-6
Tax effect	0	2	-1	2
Total other comprehensive income (loss), net of tax	1	-4	2	-4
Balance at End of Period	0	-6	0	-6
Cash Flow Hedging Instruments Unrealized Gain (Loss)	'	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Balance at Beginning of Period	-6	1	-8	-23
Other comprehensive income (loss), before tax:	'	'	'	'
Amounts before reclassification	-21	-79	-12	-114
Amounts reclassified out	5	91	-1	164
Total other comprehensive income (loss), before tax	-16	12	-13	50
Tax effect	7	-4	6	-18
Total other comprehensive income (loss), net of tax	-9	8	-7	32
Balance at End of Period	($15)	$9	($15)	$9

Supplemental_Equity_and_Compre5

Supplemental Equity and Comprehensive Income Information (Details 3) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Selling, general and administrative expenses	($1,646)	($1,610)	($3,278)	($3,199)
Total before tax	205	-110	307	-253
Tax effect	-537	-458	-1,000	-928
Net of tax	1,442	1,032	2,721	1,910
Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Net of tax	-63	-150	-120	-281
Defined Benefit Pension and Postretirement Plans Adjustment	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Total before tax	92	144	183	287
Defined Benefit Pension and Postretirement Plans Adjustment | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Transition asset	0	0	0	1
Prior service benefit	15	20	30	40
Net actuarial loss	-107	-164	-213	-328
Total before tax	-92	-144	-183	-287
Tax effect	32	53	62	111
Net of tax	-60	-91	-121	-176
Debt and Equity Securities, Unrealized Gain (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Total before tax	1	-6	3	-6
Debt and Equity Securities, Unrealized Gain (Loss) | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Selling, general and administrative expenses	0	0	0	0
Total before tax	0	0	0	0
Tax effect	0	0	0	0
Net of tax	0	0	0	0
Cash Flow Hedging Instruments Unrealized Gain (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Total before tax	-16	12	-13	50
Cash Flow Hedging Instruments Unrealized Gain (Loss) | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Total before tax	-5	-91	1	-164
Tax effect	2	32	0	59
Net of tax	-3	-59	1	-105
Cash Flow Hedging Instruments Unrealized Gain (Loss) | Foreign currency forward/option contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Cost of sales	-6	-3	-2	-9
Cash Flow Hedging Instruments Unrealized Gain (Loss) | Foreign currency forward contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Interest expense	0	-89	0	-155
Cash Flow Hedging Instruments Unrealized Gain (Loss) | Commodity price swap contracts | Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'
Cost of sales	$1	$1	$3	$0

Supplemental_Equity_and_Compre6

Supplemental Equity and Comprehensive Income Information (Details 4)	6 Months Ended				1 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jul. 31, 2014	Jul. 31, 2014
	USD ($)	Common Stock and Additional Paid-in Capital	Noncontrolling Interest	3M India Limited	Sumitomo 3M Limited	Sumitomo 3M Limited
		USD ($)	USD ($)		USD ($)	JPY (¥)
Transactions with 3M subsidiaries that have non controlling interests	'	'	'	'	'	'
3M's effective ownership before transaction (as a percent)	'	'	'	76.00%	'	'
3M's effective ownership after transaction (as a percent)	'	'	'	75.00%	100.00%	100.00%
Minimum percentage of public shareholding required by an amendment to Indian Securities regulations to comply with the sale of shares for 3M India Limited	'	'	'	25.00%	'	'
Sale of subsidiary shares	$8	$7	$1	'	'	'
Percent of interest acquired of Sumitomo 3M Limited	'	'	'	'	25.00%	25.00%
Amount of acquisition for remaining non-controlling interest	'	'	'	'	$885	¥ 90,000

Supplemental_Equity_and_Compre7

Supplemental Equity and Comprehensive Income Information (Details 6) (USD $)	1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Supplemental Equity and Comprehensive Income Information	'	'	'	'	'	'	'
Dividends declared in current period (in dollars per share)	$0.86	'	'	'	'	'	$3.40
Dividends paid in current period (in dollars per share)	'	$0.86	$0.86	$0.64	$1.71	$1.27	$2.54
Increase of Current Liabilities due to dividend declared but not paid	$567	'	'	'	'	'	$567

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information (Details 1) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Other investing activities with significant non-cash components	'
Increase of Current Liabilities due to dividend declared but not paid	$567

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Before Income Taxes	'	'	'	'
Income before income taxes	$1,820	$1,671	$3,508	$3,288

Income_Taxes_Details_1

Income Taxes (Details 1) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Provision for Income Taxes	'	'	'	'
Total provision for income taxes	$537	$458	$1,000	$928

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Deferred tax assets:	'	'
Deferred tax assets valuation allowance	$28	$23

Income_Taxes_Details_3

Income Taxes (Details 3) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Reconciliation of Effective Income Tax Rate	'	'	'	'	'
Effective tax rate (as a percent)	29.50%	27.40%	28.50%	28.20%	'
Income tax	'	'	'	'	'
Net UTB impacting the effective tax rate	$202	'	$202	'	$262
Period discussed over which the Company is not able to reasonably estimate the amount by which the liability for unrecognized tax benefits could change as a result of ongoing income tax authority examinations	'	'	'12 months	'	'
Interest and penalties related to unrecognized tax benefits, expense (benefit) recognized on a gross basis	2	1	-13	5	'
Interest and penalties related to unrecognized tax benefits, accrued on a gross basis	45	'	45	'	62
Change in effective income tax rate from prior reporting period to current reporting period (as a percent)	2.10%	'	0.30%	'	'
Impact of factors that decreased the effective tax rate from prior reporting period to current reporting period (as a percent)	'	'	-0.80%	'	'
Impact of factors that increased the effective tax rate from prior reporting period to current reporting period (as a percent)	2.10%	'	1.10%	'	'
Deferred tax assets valuation allowance	$28	'	$28	'	$23

Income_Taxes_Details_4

Income Taxes (Details 4) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Qualified and Non-qualified Pension Benefits	'
Benefit Plan Information	'
Company contributions	$74
Postretirement Benefits	'
Benefit Plan Information	'
Company contributions	$3

Marketable_Securities_Narrativ

Marketable Securities (Narratives) (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Marketable Securities	'	'
Gross unrealized losses (pre-tax) on marketable securities	$1	$5
Gross unrealized gains (pre-tax) on marketable securities	1	1
Percentage of interests in auction rate securities to portfolio, maximum	1.00%	'
Estimated fair value of auction-rate securities	12	11
Gross unrealized losses (pre-tax) within accumulated other comprehensive income related to auction rate securities	1	2
Minimum period that auction rate securities have been in a loss position	'12 months	'
Pre-determined intervals during which liquidity for auction rate securities is typically provided 1	'7 days	'
Pre-determined intervals during which liquidity for auction rate securities is typically provided 2	'28 days	'
Pre-determined intervals during which liquidity for auction rate securities is typically provided 3	'35 days	'
Pre-determined intervals during which liquidity for auction rate securities is typically provided 4	'90 days	'
Percentage of asset-backed securities rated AAA/A-1+, Aaa/P-1, or AAA/F1+	96.50%	'
Estimated fair value of current plus long term asset backed securities	$915	'

Marketable_Securities_current_

Marketable Securities (current and non-current) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Marketable securities classification	'	'
Current marketable securities	$884	$756
Non-current marketable securities	1,204	1,453
Total marketable securities	2,088	2,209
U.S. government agency securities	'	'
Marketable securities classification	'	'
Current marketable securities	78	103
Non-current marketable securities	70	131
Foreign government agency securities	'	'
Marketable securities classification	'	'
Current marketable securities	70	30
Non-current marketable securities	50	95
Corporate debt securities	'	'
Marketable securities classification	'	'
Current marketable securities	182	143
Non-current marketable securities	614	638
Commercial paper	'	'
Marketable securities classification	'	'
Current marketable securities	0	60
Certificates of deposit/time deposits	'	'
Marketable securities classification	'	'
Current marketable securities	38	20
Non-current marketable securities	10	20
U.S. treasury securities	'	'
Marketable securities classification	'	'
Non-current marketable securities	49	49
U.S. municipal securities	'	'
Marketable securities classification	'	'
Current marketable securities	0	2
Asset-backed securities	'	'
Marketable securities classification	'	'
Current marketable securities	516	398
Non-current marketable securities	399	509
Asset-backed securities Automobile loan related	'	'
Marketable securities classification	'	'
Current marketable securities	297	287
Non-current marketable securities	240	298
Asset-backed securities Credit card related	'	'
Marketable securities classification	'	'
Current marketable securities	137	52
Non-current marketable securities	85	128
Asset-backed securities Equipment lease related	'	'
Marketable securities classification	'	'
Current marketable securities	63	30
Non-current marketable securities	25	37
Asset-backed securities Other asset-backed securities	'	'
Marketable securities classification	'	'
Current marketable securities	19	29
Non-current marketable securities	49	46
Auction rate securities	'	'
Marketable securities classification	'	'
Non-current marketable securities	$12	$11

Marketable_Securities_Contract

Marketable Securities (Contractual maturity) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Marketable securities by contractual maturity	'	'
Due in one year or less	$329	'
Due after one year through five years	1,737	'
Due after five years through ten years	22	'
Due after ten years	0	'
Total marketable securities	$2,088	$2,209

LongTerm_Debt_and_ShortTerm_Bo1

Long-Term Debt and Short-Term Borrowings (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Long-Term Debt	'	'
Long-term debt - excluding current portion - carrying value	$5,323	$4,326
Short-Term Borrowings and Current Portion of Long-Term Debt	'	'
Total short-term borrowings and current portion of long-term debt	$1,650	$1,683

LongTerm_Debt_and_ShortTerm_Bo2

Long-Term Debt and Short-Term Borrowings (Details 1)	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jul. 31, 2014
	USD ($)	Fixed rate medium term note due 2019	Fixed rate medium term note due 2044	Eurobond notes which matured in 2014
		USD ($)	USD ($)	EUR (€)
Long-Term Debt	'	'	'	'
Repayment of debt	'	'	'	€ 1,025,000,000
Term of debt instrument	'	'5 years	'30 years	'
Medium-term notes program established in connection with a "well-known seasoned issuer" shelf registration	9,000,000,000	625,000,000	325,000,000	'
Amount of notes under medium term note program that were previously issued	2,250,000,000	'	'	'
Interest rate, stated percentage (as a percent)	'	1.63%	3.88%	'
Derivative notional amount	'	$600,000,000	'	'

Pension_and_Postretirement_Ben2

Pension and Postretirement Benefit Plans (Narratives) (Details) (USD $)	Dec. 31, 2013	Jun. 30, 2011	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014
In Millions, unless otherwise specified		LimitedPartner	Maximum	Minimum	Qualified and Non-qualified Pension Benefits	Postretirement Benefits
Benefit Plan Information	'	'	'	'	'	'
Company contributions year to date	'	'	'	'	$74	$3
Estimated pension and postretirement employer contributions in current fiscal year	'	'	$200	$100	'	'
Number of additional limited partners of WG Trading Company, in addition to 3M, who objected and appealed the court's order to the United States Court of Appeals for the Second Circuit	'	6	'	'	'	'
Percentage of WG Trading Company holdings in relation to total fair value of the company's total plan assets, high end of range (as a percent)	1.00%	'	'	'	'	'

Pension_and_Postretirement_Ben3

Pension and Postretirement Benefit Plans (Components of net periodic benefit cost and other information) (Details 1) (USD $)

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

In Millions, unless otherwise specified

Qualified and Non-qualified Pension Benefits

United States Qualified and Non-qualified Pension Benefits

United States Qualified and Non-qualified Pension Benefits

United States Qualified and Non-qualified Pension Benefits

United States Qualified and Non-qualified Pension Benefits

International Qualified and Non-qualified Pension Benefits

International Qualified and Non-qualified Pension Benefits

International Qualified and Non-qualified Pension Benefits

International Qualified and Non-qualified Pension Benefits

Postretirement Benefits

Postretirement Benefits

Postretirement Benefits

Postretirement Benefits

Change in benefit obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

'

'

'

$60

$64

$120

$128

$35

$36

$71

$72

$17

$20

$33

$40

Interest cost

'

'

'

169

149

338

299

65

61

129

122

24

22

48

44

Change in plan assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company contributions

'

'

74

'

'

'

'

'

'

'

'

'

'

3

'

Amounts recognized in the Consolidated Balance Sheet

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current assets

672

577

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued benefit cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current liabilities

($1,829)

($1,794)

'

'

'

'

'

'

'

'

'

'

'

'

'

Pension_and_Postretirement_Ben4

Pension and Postretirement Benefit Plans (Components of net periodic benefit cost and other information) (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
United States Qualified and Non-qualified Pension Benefits	'	'	'	'
Net periodic benefit cost (benefit)	'	'	'	'
Service cost	$60	$64	$120	$128
Interest cost	169	149	338	299
Expected return on plan assets	-261	-261	-522	-522
Amortization of transition (asset) obligation	0	0	0	0
Amortization of prior service cost (benefit)	1	1	2	2
Amortization of net actuarial (gain) loss	61	100	122	200
Net periodic benefit cost (benefit)	30	53	60	107
Settlements, curtailments, special termination benefits and other	0	0	0	0
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	30	53	60	107
International Qualified and Non-qualified Pension Benefits	'	'	'	'
Net periodic benefit cost (benefit)	'	'	'	'
Service cost	35	36	71	72
Interest cost	65	61	129	122
Expected return on plan assets	-80	-75	-159	-150
Amortization of transition (asset) obligation	0	0	0	-1
Amortization of prior service cost (benefit)	-4	-5	-8	-9
Amortization of net actuarial (gain) loss	31	40	62	80
Net periodic benefit cost (benefit)	47	57	95	114
Settlements, curtailments, special termination benefits and other	0	0	0	0
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	47	57	95	114
Postretirement Benefits	'	'	'	'
Net periodic benefit cost (benefit)	'	'	'	'
Service cost	17	20	33	40
Interest cost	24	22	48	44
Expected return on plan assets	-23	-23	-45	-45
Amortization of transition (asset) obligation	0	0	0	0
Amortization of prior service cost (benefit)	-12	-16	-24	-33
Amortization of net actuarial (gain) loss	15	24	29	48
Net periodic benefit cost (benefit)	21	27	41	54
Settlements, curtailments, special termination benefits and other	0	0	0	0
Net periodic benefit cost (benefit) after settlements, curtailments, special termination benefits and other	$21	$27	$41	$54

Pension_and_Postretirement_Ben5

Pension and Postretirement Benefit Plans (Components of net periodic benefit cost and other information) (Details 3) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Qualified and Non-qualified Pension Benefits	'
Benefit Plan Information	'
Company contributions	$74
Postretirement Benefits	'
Benefit Plan Information	'
Company contributions	$3

Derivatives_Details

Derivatives (Details) (Cash flow hedge, USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Sep. 30, 2011

Aug. 31, 2011

Jun. 30, 2014

Sep. 30, 2011

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward/option contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Commodity price swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Cost of Sales

Cost of Sales

Cost of Sales

Cost of Sales

Interest expense

Interest expense

Cost of Sales

Cost of Sales

Cost of Sales

Cost of Sales

Fixed rate Medium-term note due 2016

Derivatives in Cash Flow Hedging Relationships

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum length of time hedged in cash flow hedge

'

'

'

'

'

'

'24 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

'

'

'

Maximum length of time hedged in cash flow hedge prior to current period

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative notional amount

'

'

'

'

$1,900

'

$1,900

'

'

'

'

'

'

'

'

'

'

'

$22

'

$22

'

'

'

'

'

'

$400

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative

-21

-79

-12

-114

-20

10

-13

41

'

'

'

'

'

-86

'

-154

'

'

-1

-3

1

-1

'

'

'

'

-7

'

'

'

Gain (Loss) on Hedged Item Recognized in Income

-5

-91

1

-164

'

'

'

'

-6

-3

-2

-9

'

'

'

'

-89

-155

'

'

'

'

1

1

3

0

'

'

'

'

Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges

-15

'

-15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4

'

-2

'

The time period estimated for the anticipated transfer of gains (losses), net from accumulated other comprehensive income into earnings

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income

0

0

0

0

'

'

'

'

0

0

0

0

'

'

'

'

0

0

'

'

'

'

0

0

0

0

'

'

'

'

Term of debt instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

Term of interest rate swap

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

Change related to revision to gain recognized in other comprehensive income and gain reclassified into income

'

'

'

'

'

'

'

'

'

'

'

'

($37)

'

($2)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivatives_Details_1

Derivatives (Details 1)

Jun. 30, 2014

Jun. 30, 2014

Jul. 31, 2007

Aug. 31, 2010

Nov. 30, 2013

Jun. 30, 2014

Jul. 31, 2007

Dec. 31, 2007

Nov. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

In Millions, unless otherwise specified

Eurobond Due 2014

Fixed rate medium term note due 2019

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

EUR (€)

USD ($)

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Eurobond Due 2014

Eurobond Due 2014

Eurobond Due 2021

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Fair value hedges

Eurobond Due 2014

Eurobond Due 2014

Eurobond Due 2021

Fixed rate medium term note due 2019

EUR (€)

EUR (€)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

Interest rate swap contracts

EUR (€)

EUR (€)

EUR (€)

USD ($)

USD ($)

Interest expense

Interest expense

Interest expense

Interest expense

USD ($)

USD ($)

USD ($)

USD ($)

Derivatives in Fair Value Hedging Relationships

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative notional amount

'

$600

€ 400

'

€ 300

$600

'

'

'

'

'

'

'

$1,300

'

'

'

'

Term of debt instrument

'

'5 years

'7 years

'

'8 years

'5 years

'7 years

'7 years

'8 years

'

'

'

'

'

'

'

'

'

Face amount

1,025

'

750

'

600

625

750

275

600

'

'

'

'

'

'

'

'

'

Termination of notional amount of fixed-to-floating interest rate swap

'

'

'

150

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on termination of fixed-to-floating interest rate swap will be amortized over this debt's remaining life

'

'

'

18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate, stated percentage (as a percent)

'

1.63%

'

'

1.88%

1.63%

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Derivative Recognized in income

'

'

'

'

'

'

'

'

'

6

-3

13

-8

'

6

-3

13

-8

Gain (Loss) on Hedged Item Recognized in Income

'

'

'

'

'

'

'

'

'

($6)

$3

($13)

$8

'

($6)

$3

($13)

$8

Derivatives_Details_2

Derivatives (Details 2)

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Nov. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jul. 31, 2007

Dec. 31, 2007

Nov. 30, 2013

In Millions, unless otherwise specified

Eurobond Due 2014

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

Net Investment Hedges

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign currency forward contracts

Foreign Currency Denominated Debt

Foreign Currency Denominated Debt

Foreign Currency Denominated Debt

Foreign Currency Denominated Debt

Eurobond Due 2014

Eurobond Due 2014

Eurobond Due 2021

USD ($)

USD ($)

EUR (€)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

EUR (€)

EUR (€)

Net investment hedges

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income on Effective Portion of Instrument

'

($17)

($24)

($26)

$17

$1

$1

'

'

($18)

($24)

($27)

$17

'

'

'

Ineffective portion of gain (loss) on derivative and amount excluded from effectiveness testing recognized in income

'

0

0

0

0

0

0

'

'

0

0

0

0

'

'

'

Term of debt instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'7 years

'7 years

'8 years

Face amount

1,025

'

'

'

'

'

'

'

594

'

'

'

'

750

275

600

Derivative notional amount

'

'

'

'

'

'

'

450

'

'

'

'

'

'

'

'

Face amount of debt dedesignated from net investment hedge

€ 716

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivatives_Details_3

Derivatives (Details 3) (Derivatives not designated as hedging instruments, USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivatives not designated as hedging instruments	'	'	'	'
Gain (Loss) on Derivative Recognized in income	$33	($7)	$65	$24
Foreign currency forward/option contracts	'	'	'	'
Derivatives not designated as hedging instruments	'	'	'	'
Derivative notional amount	8,100	'	8,100	'
Foreign currency forward/option contracts | Cost of Sales	'	'	'	'
Derivatives not designated as hedging instruments	'	'	'	'
Gain (Loss) on Derivative Recognized in income	-2	21	-3	31
Foreign currency forward contracts	'	'	'	'
Derivatives not designated as hedging instruments	'	'	'	'
Change related to revision to gain recognized in income for not designated hedges	'	-21	'	-21
Foreign currency forward contracts | Interest expense	'	'	'	'
Derivatives not designated as hedging instruments	'	'	'	'
Gain (Loss) on Derivative Recognized in income	35	-27	68	-6
Commodity price swap contracts | Cost of Sales	'	'	'	'
Derivatives not designated as hedging instruments	'	'	'	'
Gain (Loss) on Derivative Recognized in income	'	($1)	'	($1)

Derivatives_Details_4

Derivatives (Details 4) (USD $)	3 Months Ended	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
		CounterParties
Location and Fair Value Amount of Derivative Instruments	'	'	'
Fair Value of Derivative Instruments, Assets	$70	$70	$84
Fair Value of Derivative Instruments, Liabilities	57	57	110
Year-on-year currency effects impact on net income, including hedging impact	-25	-54	'
Year-on-year derivative and other transaction gains and (losses) impact	-22	-25	'
Number of primary derivative counterparties	'	1	'
Number of master netting agreements supported by primary counterparty's parent guarantee	'	12	'
Number of credit support agreements by primary counterparty	'	11	'
Derivatives designated as hedging instruments	'	'	'
Location and Fair Value Amount of Derivative Instruments	'	'	'
Fair Value of Derivative Instruments, Assets	30	30	33
Fair Value of Derivative Instruments, Liabilities	26	26	42
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	12	12	24
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	23	23	35
Derivatives designated as hedging instruments | Commodity price swap contracts | Other current assets	'	'	'
Location and Fair Value Amount of Derivative Instruments	'	'	'
Fair Value of Derivative Instruments, Assets	1	1	1
Derivatives designated as hedging instruments | Commodity price swap contracts | Other current liabilities	'	'	'
Location and Fair Value Amount of Derivative Instruments	'	'	'
Fair Value of Derivative Instruments, Liabilities	1	1	0
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	17	17	8
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	2	2	7
Derivatives not designated as hedging instruments	'	'	'
Location and Fair Value Amount of Derivative Instruments	'	'	'
Fair Value of Derivative Instruments, Assets	40	40	51
Fair Value of Derivative Instruments, Liabilities	31	31	68
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	40	40	51
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	$31	$31	$68

Derivatives_Details_5

Derivatives (Details 5) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	$70	$84
Net Amounts of Derivative Assets	37	33
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	69	83
Gross Amount of Eligible Offsetting Recognized Derivative Liabilities	33	51
Cash Collateral Received	0	0
Net Amounts of Derivative Assets	36	32
Derivatives Not Subject to Master Netting Agreements	'	'
Offsetting of Financial Assets under Master Netting Agreements with Derivative Counterparties	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	1	1
Net Amounts of Derivative Assets	$1	$1

Derivatives_Details_6

Derivatives (Details 6) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties	'	'
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	$57	$110
Net Amount of Derivative Liabilities	24	59
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	57	110
Gross Amount of Eligible Offsetting Recognized Derivative Assets	33	51
Cash Collateral Pledged	0	0
Net Amount of Derivative Liabilities	24	59
Derivatives Not Subject to Master Netting Agreements	'	'
Offsetting of Financial Liabilities under Master Netting Agreements with Derivative Counterparties	'	'
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Net Amount of Derivative Liabilities	$0	$0

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	$2,088	$2,209
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	70	84
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	57	110
Fair value on a recurring basis | Fair Value | Foreign currency forward/option contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	52	75
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	54	103
Fair value on a recurring basis | Fair Value | Commodity price swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	1	1
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	'
Fair value on a recurring basis | Fair Value | Interest rate swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	17	8
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	2	7
Fair value on a recurring basis | Fair Value | U.S. government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	148	234
Fair value on a recurring basis | Fair Value | Foreign government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	120	125
Fair value on a recurring basis | Fair Value | Corporate debt securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	796	781
Fair value on a recurring basis | Fair Value | Certificates of deposit/time deposits	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	48	40
Fair value on a recurring basis | Fair Value | Commercial paper	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	60
Fair value on a recurring basis | Fair Value | Asset-backed securities Automobile loan related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	537	585
Fair value on a recurring basis | Fair Value | Asset-backed securities Credit card related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	222	180
Fair value on a recurring basis | Fair Value | Asset-backed securities Equipment lease related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	88	67
Fair value on a recurring basis | Fair Value | Asset-backed securities Other asset-backed securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	68	75
Fair value on a recurring basis | Fair Value | U.S. treasury securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	49	49
Fair value on a recurring basis | Fair Value | U.S. municipal securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	2
Fair value on a recurring basis | Fair Value | Auction rate securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	12	11
Fair value on a recurring basis | Fair Value | Investments	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	1	2
Fair value on a recurring basis | Level 1 | Foreign currency forward/option contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	52	75
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	54	103
Fair value on a recurring basis | Level 1 | Commodity price swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	1	1
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	1	'
Fair value on a recurring basis | Level 1 | Interest rate swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 1 | U.S. government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Foreign government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Corporate debt securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Certificates of deposit/time deposits	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Commercial paper	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Automobile loan related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Credit card related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Equipment lease related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Asset-backed securities Other asset-backed securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | U.S. treasury securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	49	49
Fair value on a recurring basis | Level 1 | U.S. municipal securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	0
Fair value on a recurring basis | Level 1 | Auction rate securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 1 | Investments	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	1	2
Fair value on a recurring basis | Level 2 | Foreign currency forward/option contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 2 | Commodity price swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	'
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	17	8
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	2	7
Fair value on a recurring basis | Level 2 | U.S. government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	148	234
Fair value on a recurring basis | Level 2 | Foreign government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	120	125
Fair value on a recurring basis | Level 2 | Corporate debt securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	796	781
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	48	40
Fair value on a recurring basis | Level 2 | Commercial paper	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	60
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	537	585
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	222	180
Fair value on a recurring basis | Level 2 | Asset-backed securities Equipment lease related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	88	67
Fair value on a recurring basis | Level 2 | Asset-backed securities Other asset-backed securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	68	75
Fair value on a recurring basis | Level 2 | U.S. treasury securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 2 | U.S. municipal securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	2
Fair value on a recurring basis | Level 2 | Auction rate securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 2 | Investments	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Foreign currency forward/option contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 3 | Commodity price swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	'
Fair value on a recurring basis | Level 3 | Interest rate swap contracts	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Gross Amounts of Derivative Assets Presented in the Consolidated Balance Sheet	0	0
Gross Amounts of Derivative Liabilities Presented in the Consolidated Balance Sheet	0	0
Fair value on a recurring basis | Level 3 | U.S. government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Foreign government agency securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Corporate debt securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Certificates of deposit/time deposits	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Commercial paper	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Automobile loan related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Credit card related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Equipment lease related	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | Asset-backed securities Other asset-backed securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | U.S. treasury securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	0	0
Fair value on a recurring basis | Level 3 | U.S. municipal securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	'	0
Fair value on a recurring basis | Level 3 | Auction rate securities	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	12	11
Fair value on a recurring basis | Level 3 | Investments	'	'
Assets and Liabilities Measured on Recurring Basis	'	'
Available-for-sale marketable securities	$0	$0

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
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	$12	$7	$11	$7
Total gains or losses included in earnings	0	0	0	0
Total gains or losses included in other comprehensive income	0	3	1	3
Purchases, issuances, 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	12	10	12	10
Change in unrealized gains or losses for the period included in earnings for securities held at the end of the reporting period	$0	$0	$0	$0

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2)	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified	Eurobond Due 2014	Carrying Amount	Carrying Amount	Carrying Amount	Carrying Amount	Fair Value	Fair Value	Fair Value	Fair Value
	EUR (€)	USD ($)	USD ($)	Eurobond Due 2014	Eurobond Due 2014	USD ($)	USD ($)	Eurobond Due 2014	Eurobond Due 2014
				USD ($)	USD ($)			USD ($)	USD ($)
Financial Instruments	'	'	'	'	'	'	'	'	'
Eurobond securities due July 2014	'	'	'	$1,396	$1,424	'	'	$1,398	$1,447
Long-term debt, excluding current portion	'	5,323	4,326	'	'	5,575	4,463	'	'
Principal amount	€ 1,025	'	'	'	'	'	'	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies (Details 1) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
		Claim	Claimant
		Claimant
Respirator Mask/Asbestos Litigation	'	'	'
Loss contingencies	'	'	'
Accrued loss contingency reserve	$153,000,000	$153,000,000	$152,000,000
Insurance receivables	47,000,000	47,000,000	58,000,000
Total number of named claimants	'	2,225	2,200
Number of total claims settled and taken to trial	'	9	'
Number of total claims tried to verdict	'	8	'
Number of total claims settled and tried to verdict	'	7	'
Number of total claims dismissed	'	1	'
Increase in insurance liabilities	14,000,000	21,000,000	'
Payments for fees and settlements related to litigation	9,000,000	19,000,000	'
Respirator Mask/Asbestos Litigation - State of West Virginia	'	'	'
Loss contingencies	'	'	'
Number of additional defendants	'	2	'
Respirator Mask/Asbestos litigation - Excluding Aearo Technologies	'	'	'
Loss contingencies	'	'	'
Accrued loss contingency reserve	129,000,000	129,000,000	'
Insurance Disclaimer Action	'	'	'
Loss contingencies	'	'	'
Proceeds received in connection with respirator mask/asbestos receivable	6,000,000	11,000,000	'
Number of insurers who filed a declaratory judgment action against the company	'	2	'
Number of the entity's insurers named in the action, low end of range	'	60	'
Respirator Mask/Asbestos Litigation - Aearo Technologies	'	'	'
Loss contingencies	'	'	'
Accrued loss contingency reserve	24,000,000	24,000,000	'
Quarterly fee paid to Cabot to retain responsibility and liability for products manufactured before July 11, 1995	'	100,000	'
Environmental Matters - Remediation	'	'	'
Loss contingencies	'	'	'
Accrued loss contingency reserve	26,000,000	26,000,000	27,000,000
Insurance receivables	11,000,000	11,000,000	11,000,000
Number of years remediation payments expected to be paid for applicable sites	'	'20 years	'
Environmental Matters - Other	'	'	'
Loss contingencies	'	'	'
Accrued loss contingency reserve	45,000,000	45,000,000	48,000,000
Insurance receivables	15,000,000	15,000,000	15,000,000
Environmental Matters - Regulatory Activities	'	'	'
Loss contingencies	'	'	'
Number of PFCs the EPA has proposed to have public water suppliers monitor	'	6	'
Amount of PFOA in drinking water allowed per provisional health advisories in grams per liter	'	0.0000004	'
Amount of PFOS in drinking water allowed per provisional health advisories in grams per liter	'	0.0000002	'
Number of years after phase-out decision in May 2000 that the Company stopped manufacturing and using vast majority of perfluorooctanyl compounds	'	'2 years	'
Environmental Matters - Regulatory Activities | Alabama	'	'	'
Loss contingencies	'	'	'
Wastewater treatment plant sludge containing PFCs surrounding Decatur facility pursuant to a permit	'	'20 years	'
Environmental Matters - Litigation | Morgan County, Alabama	'	'	'
Loss contingencies	'	'	'
Total number of named claimants	'	3	'
Environmental Matters - Litigation | New Jersey	'	'	'
Loss contingencies	'	'	'
Lower end of range of number of companies served with a complaint	'	250	'
Number of additional defendants	'	5	'
Total cost of cleanup proposed by the EPA, of which the Company believes its applicable share, if any, is likely to be a fraction of one percent	'	$1,000,000,000	'
Total cost of cleanup proposed by EPA of which company believes its applicable share to be fraction of this maximum percentage (as a percent)	'	1.00%	'
Number of commercial drum conditioning facilities used	'	2	'
Environmental Matters - Litigation | Metropolitan Council, Minnesota	'	'	'
Loss contingencies	'	'	'
Number of wastewater treatment plants from which PFC-containing sludge and biosolids may allegedly be discharged by Metropolitan Council, low end of range	'	1	'
Environmental Matters - Other Environmental Litigation	'	'	'
Loss contingencies	'	'	'
Number of years remediation payments expected to be paid for applicable sites	'	'4 years	'
Number of former disposal sites with PFC present in soil and groundwater in Washington County, Minnesota	'	2	'

Commitments_and_Contingencies_2

Commitments and Contingencies (Details 2) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
	ClassActions
Commercial Litigation - Ceradyne Inc.	'
Loss contingencies	'
Number of purported class actions filed	4
Commercial Litigation - Ceradyne Inc. California Superior Court	'
Loss contingencies	'
Number of purported class actions filed	2
Commercial Litigation - Ceradyne Inc. Delaware Chancery Court	'
Loss contingencies	'
Number of purported class actions filed	2
Commercial Litigation - TransWeb Corporation	'
Loss contingencies	'
Number of counts jury did not rule in favor of Transweb	1
Number of 3M patents unenforceable due to inequitable conduct	2
Potential maximum loss exposure due to judgment against 3M	26

Commitments_and_Contingencies_3

Commitments and Contingencies (Details 3) (EUR €)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
	Claimant
	Claim
Product Liability - Filters	'
Product Liability Litigation	'
Number of customers who obtained an order in the French Courts against SAS 3M Purification	1
Number of customers who filed a lawsuit against 3M Deutshland GmbH	1
Number of other customers the Company has resolved claims with	2
Product Liability Litigation - EDF	'
Product Liability Litigation	'
Number of lawsuits filed	1
Amount of potential damages EDF incurred as stated by court appointed expert witness	100
Product Liability Litigation - EDF | Maximum	'
Product Liability Litigation	'
Estimated time commercial court may take to render decision	'1 year
Product Liability Litigation - EDF | Minimum	'
Product Liability Litigation	'
Estimated time commercial court may take to render decision	'6 months

StockBased_Compensation_Detail

Stock-Based Compensation (Details)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	31-May-12
		3M Long Term Incentive Plan	3M Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award Activity	'	'	'
Number of shares authorized	'	'	100,000,000
Number of shares available for grant under the 2008 Long Term Incentive Plan Program (including additional subsequent shareholder approvals)	'	28,813,481	'
Retirement age eligibility for employees	'55 years	'	'
Retirement eligibility for employees, minimum years of service required	'5 years	'	'
Percent of stock-based compensation related to retiree-eligible population (as a percent)	33.00%	'	'

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 1) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Amounts recognized in the financial statements	'	'	'	'
Stock-based compensation programs expense	$52	$47	$174	$150
Income tax benefits	-13	-13	-53	-45
Stock-based compensation expenses, net of tax	39	34	121	105
Cost of Sales	'	'	'	'
Amounts recognized in the financial statements	'	'	'	'
Stock-based compensation programs expense	11	6	33	18
Selling, general and administrative expenses	'	'	'	'
Amounts recognized in the financial statements	'	'	'	'
Stock-based compensation programs expense	35	36	112	113
Research, development and related expenses	'	'	'	'
Amounts recognized in the financial statements	'	'	'	'
Stock-based compensation programs expense	$6	$5	$29	$19

StockBased_Compensation_Detail2

Stock-Based Compensation (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	31-May-12
					Stock Option Program	Stock Option Program	Stock Option Program	Stock Option Program	Stock Option Program	3M Long Term Incentive Plan	3M Long Term Incentive Plan
							Maximum	Minimum	Annual Stock Option Program
Stock Option Program	'	'	'	'	'	'	'	'	'	'	'
Balance at the beginning of the period	'	'	'	'	43,938,778	'	'	'	'	'	'
Granted - Annual	'	'	'	'	5,736,183	'	'	'	'	'	'
Exercised	'	'	'	'	-6,229,925	'	'	'	'	'	'
Canceled	'	'	'	'	-154,922	'	'	'	'	'	'
Balance at the end of the period	'	'	'	'	43,290,114	'	'	'	'	'	'
Weighted average exercise price - Beginning balance	'	'	'	'	$83.84	'	'	'	'	'	'
Weighted average exercise price - Granted - Annual	'	'	'	'	$126.77	'	'	'	'	'	'
Weighted average exercise price - Exercised	'	'	'	'	$83.02	'	'	'	'	'	'
Weighted average exercise price - Canceled	'	'	'	'	$103.29	'	'	'	'	'	'
Weighted average exercise price - Ending balance	'	'	'	'	$89.58	'	'	'	'	'	'
Vesting period	'	'	'	'	'	'	'3 years	'1 year	'	'	'
Expiration of annual grants	'	'	'	'	'10 years	'	'	'	'	'	'
Options exercisable	'	'	'	'	31,486,006	'	'	'	'	'	'
Options exercisable, exercise price	'	'	'	'	$81.41	'	'	'	'	'	'
Weighted average remaining contractual life for options outstanding	'	'	'	'	'68 months	'	'	'	'	'	'
Aggregate intrinsic value for options outstanding	'	'	'	'	$2,323	'	'	'	'	'	'
Weighted average remaining contractual life for options exercisable	'	'	'	'	'53 months	'	'	'	'	'	'
Aggregate intrinsic value for options exercisable	'	'	'	'	1,947	'	'	'	'	'	'
Compensation expense yet to be recognized	'	'	'	'	89	'	'	'	'	'	'
Weighted average life of remaining vesting period	'	'	'	'	'25 months	'	'	'	'	'	'
Total intrinsic value of stock options exercised	'	'	'	'	340	338	'	'	'	'	'
Cash received from options exercised	'	'	'	'	517	1,039	'	'	'	'	'
Tax benefit realized from exercise of stock options	'	'	'	'	125	125	'	'	'	'	'
Share- based compensation assumptions	'	'	'	'	'	'	'	'	'	'	'
Weighted average exercise price	'	'	'	'	'	'	'	'	$126.72	'	'
Risk-free interest rate (as a percent)	'	'	'	'	'	'	'	'	1.90%	'	'
Dividend yield (as a percent)	'	'	'	'	'	'	'	'	2.60%	'	'
Expected volatility (as a percent)	'	'	'	'	'	'	'	'	20.80%	'	'
Expected life	'	'	'	'	'	'	'	'	'75 months	'	'
Black-Scholes fair value	'	'	'	'	'	'	'	'	$19.63	'	'
Stock-based compensation programs expense	$52	$47	$174	$150	'	'	'	'	'	'	'
Number of shares authorized	'	'	'	'	'	'	'	'	'	'	100,000,000
Number of shares available for grant under the 2008 Long Term Incentive Plan Program (including additional subsequent shareholder approvals)	'	'	'	'	'	'	'	'	'	28,813,481	'

StockBased_Compensation_Detail3

Stock-Based Compensation (Details 3) (USD $)	6 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Restricted Stock Units and Restricted Stock	'	'
Unit and Shares Activity:	'	'
Number of Awards - Nonvested - Beginning balance	3,105,361	'
Number of Awards - Granted - Annual	798,615	'
Number of Awards - Granted - Other	15,647	'
Number of Awards - Vested	-1,066,382	'
Number of Awards - Forfeited	-33,543	'
Number of Awards - Nonvested - Ending balance	2,819,698	'
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	$92.31	'
Weighted Average Grant Date Fair Value - Granted - Annual	$126.79	'
Weighted Average Grant Date Fair Value - Granted - Other	$141.58	'
Weighted Average Grant Date Fair Value - Vested	$90.63	'
Weighted Average Grant Date Fair Value - Forfeited	$100.63	'
Weighted Average Grant Date Fair Value - Nonvested - Ending balance	$102.89	'
Vesting period	'3 years	'
Weighted average life of remaining vesting period	'25 months	'
Fair value that vested	$140	$106
Compensation expense yet to be recognized	110	'
Tax benefit realized from vesting	53	40
Performance Shares	'	'
Unit and Shares Activity:	'	'
Number of Awards - Nonvested - Beginning balance	895,635	'
Number of Awards - Granted - Annual	285,149	'
Number of Awards - Vested	-277,357	'
Number of Awards - Performance Change	59,443	'
Number of Awards - Forfeited	-6,501	'
Number of Awards - Nonvested - Ending balance	956,369	'
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	$88.12	'
Weighted Average Grant Date Fair Value - Granted - Annual	$123.88	'
Weighted Average Grant Date Fair Value - Vested	$84.74	'
Weighted Average Grant Date Fair Value - Performance Change	$114.15	'
Weighted Average Grant Date Fair Value - Forfeited	$102.45	'
Weighted Average Grant Date Fair Value - Nonvested - Ending balance	$101.28	'
Weighted average life of remaining vesting period	'10 months	'
Share-based compensation arrangement by share-based payment award, award vesting or performance period	'3 years	'
Fair value that vested	35	52
Compensation expense yet to be recognized	35	'
Tax benefit realized from vesting	$11	$16
Performance Shares | Maximum	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures	'	'
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions	200.00%	'
Vesting period	'3 years	'
Performance Shares | Minimum	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures	'	'
Number of shares to be delivered based on percent of each performance share granted upon satisfaction of performance conditions	0.00%	'
Vesting period	'1 year	'

Business_Segments_Narratives_D

Business Segments (Narratives) (Details) (USD $)	6 Months Ended			1 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014
	Segment	Business Segments	Business Segments	Business Segments
		Industrial	Safety and Graphics	Electronics and Energy
				Divisions
Business Segment Information	'	'	'	'
Number of operating business segments	5	'	'	'
Increase (decrease) in net sales due to product transfers	'	$73	($73)	'
Number of existing divisions prior to division combination	'	'	'	3
Number of divisions that exist after the division combination	'	'	'	2

Business_Segments_Segment_info

Business Segments (Segment information) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Business Segment Information	'	'	'	'	'
Net sales	$8,134	$7,752	$15,965	$15,386	'
Operating Income	1,856	1,702	3,572	3,348	'
Assets	33,970	'	33,970	'	33,550
Depreciation and amortization	'	'	708	671	'
Business Segments | Industrial	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	2,815	2,683	5,591	5,376	'
Operating Income	617	603	1,235	1,182	'
Business Segments | Safety and Graphics	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	1,494	1,434	2,917	2,833	'
Operating Income	353	328	671	660	'
Business Segments | Electronics and Energy	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	1,422	1,340	2,733	2,617	'
Operating Income	293	237	520	433	'
Business Segments | Health Care	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	1,416	1,336	2,790	2,647	'
Operating Income	434	417	861	821	'
Business Segments | Consumer	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	1,139	1,098	2,218	2,179	'
Operating Income	241	235	469	472	'
Corporate and Unallocated	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	-1	1	2	3	'
Operating Income	-49	-87	-121	-161	'
Elimination of Dual Credit	'	'	'	'	'
Business Segment Information	'	'	'	'	'
Net sales	-151	-140	-286	-269	'
Operating Income	($33)	($31)	($63)	($59)	'

Geographic_Areas_Details

Geographic Areas (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Net Sales, Operating Income and Property, Plant and Equipment - Net	'	'	'	'	'
Net sales	$8,134	$7,752	$15,965	$15,386	'
Operating Income (Loss)	1,856	1,702	3,572	3,348	'
Property, Plant and Equipment - net	$8,685	'	$8,685	'	$8,652

Quarterly_Data_Unaudited_Detai

Quarterly Data (Unaudited) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Quarterly Data (Unaudited)	'	'	'	'
Net sales	$8,134	$7,752	$15,965	$15,386
Cost of sales	4,184	4,013	8,215	7,982
Net income including noncontrolling interest	1,283	1,213	2,508	2,360
Net income attributable to 3M	$1,267	$1,197	$2,474	$2,326
Earnings per share attributable to 3M common shareholders - basic (in dollars per share)	$1.94	$1.74	$3.77	$3.37
Earnings per share attributable to 3M common shareholders - diluted (in dollars per share)	$1.91	$1.71	$3.70	$3.32