$MMM
3M CO Stock $mmm

$mmm Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000110465912010566 Filed on February 16, 2012

Income Statement

Concept	2011 Q4	2010 Q4	2010 Q3
Revenue	$7.089B	$6.709B	$6.874B
YoY Change	5.66%	9.59%	11.0%
Cost Of Revenue	$3.824B	$3.575B	$3.583B
YoY Change	6.97%	12.1%	12.99%
Gross Profit	$3.265B	$3.134B	$3.291B
YoY Change	4.18%	6.85%	8.9%
Gross Profit Margin	46.06%	46.71%	47.88%
Selling, General & Admin	$1.522B	$1.445B	$1.361B
YoY Change	5.33%	14.23%	12.57%
% of Gross Profit	46.62%	46.11%	41.36%
Research & Development	$379.0M	$388.0M	$354.0M
YoY Change	-2.32%	19.02%	5.67%
% of Gross Profit	11.61%	12.38%	10.76%
Depreciation & Amortization	$317.0M	$283.0M	$278.0M
YoY Change	12.01%	-5.03%	-4.14%
% of Gross Profit	9.71%	9.03%	8.45%
Operating Expenses	$1.901B	$1.833B	$1.361B
YoY Change	3.71%	15.21%	12.57%
Operating Profit	$1.364B	$1.301B	$1.576B
YoY Change	4.84%	-3.06%	6.63%
Interest Expense	-$35.00M	-$39.00M	-$40.00M
YoY Change	-10.26%	-9.3%	-14.89%
% of Operating Profit	-2.57%	-3.0%	-2.54%
Other Income/Expense, Net			-$40.00M
YoY Change			-14.89%
Pretax Income	$1.329B	$1.262B	$1.536B
YoY Change	5.31%	-2.85%	7.34%
Income Tax	$355.0M	$319.0M	$411.0M
% Of Pretax Income	26.71%	25.28%	26.76%
Net Earnings	$954.0M	$928.0M	$1.106B
YoY Change	2.8%	-0.75%	15.57%
Net Earnings / Revenue	13.46%	13.83%	16.09%
Basic Earnings Per Share	$1.36	$1.30	$1.55
Diluted Earnings Per Share	$1.35	$1.28	$1.53
COMMON SHARES
Basic Shares Outstanding			714.0M shares
Diluted Shares Outstanding			725.2M shares

Balance Sheet

Concept	2011 Q4	2010 Q4	2010 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$4.576B	$5.018B	$6.296B
YoY Change	-8.81%	8.87%	59.96%
Cash & Equivalents	$2.219B	$3.377B	$4.466B
Short-Term Investments	$2.357B	$1.641B	$1.830B
Other Short-Term Assets	$1.277B	$967.0M	$1.111B
YoY Change	32.06%	-13.81%	12.56%
Inventory	$3.416B	$3.155B	$3.215B
Prepaid Expenses
Receivables	$3.867B	$3.615B	$3.869B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$12.24B	$12.22B	$14.05B
YoY Change	0.2%	13.15%	25.47%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.666B	$7.279B	$6.915B
YoY Change	5.32%	3.99%	-0.12%
Goodwill	$7.047B	$6.820B	$5.899B
YoY Change	3.33%	16.94%	0.65%
Intangibles	$1.916B	$1.820B	$1.279B
YoY Change	5.27%	35.62%	-8.12%
Long-Term Investments	$1.051B	$686.0M	$579.0M
YoY Change	53.21%	-26.08%	-7.36%
Other Assets	$1.656B	$1.262B	$1.241B
YoY Change	31.22%	-1.02%	-22.19%
Total Long-Term Assets	$19.38B	$17.94B	$16.02B
YoY Change	8.0%	9.03%	-2.56%
TOTAL ASSETS
Total Short-Term Assets	$12.24B	$12.22B	$14.05B
Total Long-Term Assets	$19.38B	$17.94B	$16.02B
Total Assets	$31.62B	$30.16B	$30.07B
YoY Change	4.84%	10.66%	8.8%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.643B	$1.662B	$1.649B
YoY Change	-1.14%	14.38%	17.45%
Accrued Expenses	$676.0M	$778.0M	$738.0M
YoY Change	-13.11%	14.41%	7.74%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$682.0M	$1.269B	$653.0M
YoY Change	-46.26%	107.01%	-29.1%
Total Short-Term Liabilities	$5.441B	$6.089B	$5.395B
YoY Change	-10.64%	24.34%	-6.43%
LONG-TERM LIABILITIES
Long-Term Debt	$4.484B	$4.183B	$5.105B
YoY Change	7.2%	-17.93%	-1.9%
Other Long-Term Liabilities	$1.857B	$1.854B	$1.879B
YoY Change	0.16%	7.35%	11.45%
Total Long-Term Liabilities	$6.341B	$6.037B	$6.984B
YoY Change	5.04%	-11.53%	1.36%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.441B	$6.089B	$5.395B
Total Long-Term Liabilities	$6.341B	$6.037B	$6.984B
Total Liabilities	$15.75B	$14.14B	$14.23B
YoY Change	11.42%	1.37%	-3.28%
SHAREHOLDERS EQUITY
Retained Earnings	$28.35B	$26.00B	$25.49B
YoY Change	9.05%	9.44%	9.64%
Common Stock	$3.776B	$3.477B	$3.390B
YoY Change	8.6%	9.96%	9.43%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$11.68B	$10.27B	$10.01B
YoY Change	13.76%	-1.26%	-5.73%
Treasury Stock Shares	249.1M shares	232.1M shares	229.2M shares
Shareholders Equity	$15.42B	$15.66B	$15.50B
YoY Change
Total Liabilities & Shareholders Equity	$31.62B	$30.16B	$30.07B
YoY Change	4.84%	10.66%	8.8%

Cashflow Statement

Concept	2011 Q4	2010 Q4	2010 Q3
OPERATING ACTIVITIES
Net Income	$954.0M	$928.0M	$1.106B
YoY Change	2.8%	-0.75%	15.57%
Depreciation, Depletion And Amortization	$317.0M	$283.0M	$278.0M
YoY Change	12.01%	-5.03%	-4.14%
Cash From Operating Activities	$1.738B	$1.631B	$1.323B
YoY Change	6.56%	56.23%	-23.79%
INVESTING ACTIVITIES
Capital Expenditures	-$517.0M	-$526.0M	-$228.0M
YoY Change	-1.71%	91.97%	30.29%
Acquisitions
YoY Change
Other Investing Activities	-$617.0M	-$1.223B	$726.0M
YoY Change	-49.55%	220.16%	-238.02%
Cash From Investing Activities	-$1.134B	-$1.749B	$498.0M
YoY Change	-35.16%	166.62%	-171.04%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.777B	-959.0M	-464.0M
YoY Change	85.3%	60.64%	60.0%
NET CHANGE
Cash From Operating Activities	1.738B	1.631B	1.323B
Cash From Investing Activities	-1.134B	-1.749B	498.0M
Cash From Financing Activities	-1.777B	-959.0M	-464.0M
Net Change In Cash	-1.173B	-1.077B	1.357B
YoY Change	8.91%	415.31%	82.15%
FREE CASH FLOW
Cash From Operating Activities	$1.738B	$1.631B	$1.323B
Capital Expenditures	-$517.0M	-$526.0M	-$228.0M
Free Cash Flow	$2.255B	$2.157B	$1.551B
YoY Change	4.54%	63.66%	-18.84%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3377000000	usd
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2010Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	1101000000	usd
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	3615000000	usd
CY2010Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1476000000	usd
CY2010Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	950000000	usd
CY2010Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	729000000	usd
CY2010Q4	us-gaap	Inventory Net InventoryNet	3155000000	usd
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	967000000	usd
CY2010Q4	us-gaap	Assets Current AssetsCurrent	12215000000	usd
CY2010Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	540000000	usd
CY2010Q4	us-gaap	Long Term Investments LongTermInvestments	146000000	usd
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	20253000000	usd
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12974000000	usd
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7279000000	usd
CY2010Q4	us-gaap	Goodwill Goodwill	6820000000	usd
CY2010Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	74000000	usd
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1262000000	usd
CY2010Q4	us-gaap	Assets Assets	30156000000	usd
CY2010Q4	us-gaap	Debt Current DebtCurrent	1269000000	usd
CY2010Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1662000000	usd
CY2010Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	778000000	usd
CY2010Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	358000000	usd
CY2010Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2022000000	usd
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	6089000000	usd
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4183000000	usd
CY2010Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2013000000	usd
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1854000000	usd
CY2010Q4	us-gaap	Liabilities Liabilities	14139000000	usd
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	9000000	usd
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3468000000	usd
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	25995000000	usd
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	10266000000	usd
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3543000000	usd
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	15663000000	usd
CY2010Q4	us-gaap	Minority Interest MinorityInterest	354000000	usd
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16017000000	usd
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	30156000000	usd
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011	dei	Entity Registrant Name EntityRegistrantName	3M CO
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000066740
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	694543763	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	26300000	shares
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	54300000	shares
CY2011	us-gaap	Acquired Finite Lived Intangible Asset Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLife	14
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	374000000	usd
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	3879000000	usd
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6000000	usd
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-32000000	usd
CY2010Q1	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	17400000000
CY2010Q1	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	5800000000
CY2010Q1	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	188000000	usd
CY2010Q1	mmm	Minority Interest Decrease To Noncontrolling Interest Related To Purchase Of Subsidiary Shares Including Other Transfers From Noncontrolling Interest MinorityInterestDecreaseToNoncontrollingInterestRelatedToPurchaseOfSubsidiarySharesIncludingOtherTransfersFromNoncontrollingInterest	278000000	usd
CY2010Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	394000000	usd
CY2010Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	52000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	128000000	usd
CY2010Q4	us-gaap	Marketable Securities MarketableSecurities	1641000000	usd
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	9000000	usd
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	5000000	usd
CY2011Q1	mmm	Number Of Additional Limited Partners Of Wg Trading Company In Addition To3 M Who Objected And Appealed Courts Order To The United States Court Of Appeals For The Second Circuit NumberOfAdditionalLimitedPartnersOfWGTradingCompanyInAdditionTo3MWhoObjectedAndAppealedCourtsOrderToTheUnitedStatesCourtOfAppealsForTheSecondCircuit	6
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	7000000	usd
CY2009Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	5000000	usd
CY2011	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	9
	mmm	Reporting Segments Number ReportingSegmentsNumber	6
CY2011	us-gaap	Finite Lived Intangible Assets Useful Life Minimum FiniteLivedIntangibleAssetsUsefulLifeMinimum	3
CY2011	us-gaap	Finite Lived Intangible Assets Useful Life Maximum FiniteLivedIntangibleAssetsUsefulLifeMaximum	20
CY2010Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2692000000	usd
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	872000000	usd
CY2010Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	125000000	usd
CY2010Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1820000000	usd
CY2010Q1	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	22000000	usd
CY2010Q2	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	24000000	usd
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	77000000	usd
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	87000000	usd
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	10500000	shares
CY2009	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	6200000	shares
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Receivables BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables	106000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Inventory BusinessAcquisitionPurchasePriceAllocationCurrentAssetsInventory	128000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Prepaid Expense And Other Assets BusinessAcquisitionPurchasePriceAllocationCurrentAssetsPrepaidExpenseAndOtherAssets	42000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	175000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Amortizable Intangible Assets BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets	342000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	259000000	usd
CY2011Q4	mmm	Business Acquisition Purchase Price Allocation Accounts Payable And Other Liabilities Net Of Other Assets BusinessAcquisitionPurchasePriceAllocationAccountsPayableAndOtherLiabilitiesNetOfOtherAssets	148000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Notes Payable And Long Term Debt BusinessAcquisitionPurchasePriceAllocationNotesPayableAndLongTermDebt	103000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Deferred Income Taxes Asset Liability Net BusinessAcquisitionPurchasePriceAllocationDeferredIncomeTaxesAssetLiabilityNet	-86000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net BusinessAcquisitionPurchasePriceAllocationAssetsAcquiredLiabilitiesAssumedNet	715000000	usd
CY2011Q4	us-gaap	Business Combination Acquisition Of Less Than100 Percent Noncontrolling Interest Fair Value BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue	56000000	usd
CY2011Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Less Noncontrolling Interest BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest	659000000	usd
CY2010	mmm	Adjustment To Prior Period Net Cash Used In Investing And Financing Activities To Acquire Additional Noncontrolling Interest AdjustmentToPriorPeriodNetCashUsedInInvestingAndFinancingActivitiesToAcquireAdditionalNoncontrollingInterest	63000000	usd
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	29611000000	usd
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	26662000000	usd
CY2009	us-gaap	Sales Revenue Net SalesRevenueNet	23123000000	usd
CY2011	us-gaap	Cost Of Revenue CostOfRevenue	15693000000	usd
CY2010	us-gaap	Cost Of Revenue CostOfRevenue	13831000000	usd
CY2009	us-gaap	Cost Of Revenue CostOfRevenue	12109000000	usd
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	6170000000	usd
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	5479000000	usd
CY2009	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	4907000000	usd
CY2011	mmm	Research Development And Related Expenses ResearchDevelopmentAndRelatedExpenses	1570000000	usd
CY2009	mmm	Research Development And Related Expenses ResearchDevelopmentAndRelatedExpenses	1293000000	usd
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	23433000000	usd
CY2010	us-gaap	Costs And Expenses CostsAndExpenses	20744000000	usd
CY2009	us-gaap	Costs And Expenses CostsAndExpenses	18309000000	usd
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	6178000000	usd
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	5918000000	usd
CY2009	us-gaap	Operating Income Loss OperatingIncomeLoss	4814000000	usd
CY2011	us-gaap	Interest And Debt Expense InterestAndDebtExpense	186000000	usd
CY2010	us-gaap	Interest And Debt Expense InterestAndDebtExpense	201000000	usd
CY2009	us-gaap	Interest And Debt Expense InterestAndDebtExpense	219000000	usd
CY2011	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	39000000	usd
CY2010	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	38000000	usd
CY2009	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	37000000	usd
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-147000000	usd
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-163000000	usd
CY2009	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-182000000	usd
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	6031000000	usd
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5755000000	usd
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	4632000000	usd
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1674000000	usd
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1592000000	usd
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1388000000	usd
CY2011	us-gaap	Profit Loss ProfitLoss	4357000000	usd
CY2010	us-gaap	Profit Loss ProfitLoss	4163000000	usd
CY2009	us-gaap	Profit Loss ProfitLoss	3244000000	usd
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	74000000	usd
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	78000000	usd
CY2009	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	51000000	usd
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4085000000	usd
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3193000000	usd
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	708500000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	713700000	shares
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	700500000	shares
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.05
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.72
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.56
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	719000000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	725500000	shares
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	706700000	shares
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.96
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.63
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.52
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.20
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.10
CY2009	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.04
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2219000000	usd
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	3867000000	usd
CY2011Q4	us-gaap	Inventory Net InventoryNet	3416000000	usd
CY2011Q4	us-gaap	Assets Current AssetsCurrent	12240000000	usd
CY2011Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	1461000000	usd
CY2011Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	1536000000	usd
CY2011Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	1061000000	usd
CY2011Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	819000000	usd
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1277000000	usd
CY2011Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	896000000	usd
CY2011Q4	us-gaap	Long Term Investments LongTermInvestments	155000000	usd
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	21166000000	usd
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	13500000000	usd
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7666000000	usd
CY2011Q4	us-gaap	Goodwill Goodwill	7047000000	usd
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1916000000	usd
CY2011Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	40000000	usd
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1656000000	usd
CY2011Q4	us-gaap	Assets Assets	31616000000	usd
CY2011Q4	us-gaap	Debt Current DebtCurrent	682000000	usd
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1643000000	usd
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	676000000	usd
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	355000000	usd
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2085000000	usd
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5441000000	usd
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4484000000	usd
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3972000000	usd
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1857000000	usd
CY2011Q4	us-gaap	Liabilities Liabilities	15754000000	usd
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	9000000	usd
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3767000000	usd
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	28348000000	usd
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	11679000000	usd
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5025000000	usd
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	15420000000	usd
CY2011Q4	us-gaap	Minority Interest MinorityInterest	442000000	usd
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	15862000000	usd
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	31616000000	usd
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1120000000	usd
CY2009	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1157000000	usd
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	108000000	usd
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	98000000	usd
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	694970041	shares
CY2010Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	711977608	shares
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1236000000	usd
CY2011	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	582000000	usd
CY2010	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	618000000	usd
CY2009	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	792000000	usd
CY2011	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	555000000	usd
CY2010	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	322000000	usd
CY2009	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	223000000	usd
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	253000000	usd
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	274000000	usd
CY2009	us-gaap	Share Based Compensation ShareBasedCompensation	217000000	usd
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	177000000	usd
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-170000000	usd
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	701000000	usd
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	53000000	usd
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	53000000	usd
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	14000000	usd
CY2011	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	205000000	usd
CY2010	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	189000000	usd
CY2009	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-55000000	usd
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	196000000	usd
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	404000000	usd
CY2009	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-453000000	usd
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-83000000	usd
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	146000000	usd
CY2009	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	109000000	usd
CY2011	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-45000000	usd
CY2010	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	255000000	usd
CY2009	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-147000000	usd
CY2011	mmm	Change In Product And Other Insurance Receivables And Claims ChangeInProductAndOtherInsuranceReceivablesAndClaims	9000000	usd
CY2010	mmm	Change In Product And Other Insurance Receivables And Claims ChangeInProductAndOtherInsuranceReceivablesAndClaims	49000000	usd
CY2009	mmm	Change In Product And Other Insurance Receivables And Claims ChangeInProductAndOtherInsuranceReceivablesAndClaims	64000000	usd
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	139000000	usd
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-279000000	usd
CY2009	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	329000000	usd
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	5284000000	usd
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	5174000000	usd
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	4941000000	usd
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1379000000	usd
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1091000000	usd
CY2009	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	903000000	usd
CY2011	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	55000000	usd
CY2010	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	25000000	usd
CY2009	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	74000000	usd
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	649000000	usd
CY2011	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	4162000000	usd
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1830000000	usd
CY2009	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	69000000	usd
CY2010	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	3287000000	usd
CY2009	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	2240000000	usd
CY2011	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	1679000000	usd
CY2010	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	1995000000	usd
CY2009	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	718000000	usd
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1738000000	usd
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1565000000	usd
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	683000000	usd
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	usd
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2718000000	usd
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2626000000	usd
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1732000000	usd
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	11000000	usd
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-24000000	usd
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In Three Months Or Less ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess	-536000000	usd
CY2011	us-gaap	Repayments Of Debt Maturing In More Than Three Months RepaymentsOfDebtMaturingInMoreThanThreeMonths	1429000000	usd
CY2010	us-gaap	Repayments Of Debt Maturing In More Than Three Months RepaymentsOfDebtMaturingInMoreThanThreeMonths	556000000	usd
CY2009	us-gaap	Repayments Of Debt Maturing In More Than Three Months RepaymentsOfDebtMaturingInMoreThanThreeMonths	519000000	usd
CY2011	us-gaap	Proceeds From Repayments Of Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfDebtMaturingInMoreThanThreeMonths	1111000000	usd
CY2010	us-gaap	Proceeds From Repayments Of Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfDebtMaturingInMoreThanThreeMonths	108000000	usd
CY2009	us-gaap	Proceeds From Repayments Of Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfDebtMaturingInMoreThanThreeMonths	41000000	usd
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2701000000	usd
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	854000000	usd
CY2009	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	17000000	usd
CY2011	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	902000000	usd
CY2010	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	666000000	usd
CY2009	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	431000000	usd
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1555000000	usd
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1500000000	usd
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1431000000	usd
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	53000000	usd
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	53000000	usd
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	14000000	usd
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-67000000	usd
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-77000000	usd
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	3000000	usd
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-3675000000	usd
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-2184000000	usd
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-2014000000	usd
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-49000000	usd
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-27000000	usd
CY2009	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-4000000	usd
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1158000000	usd
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	337000000	usd
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1191000000	usd
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3040000000	usd
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1849000000	usd
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10304000000	usd
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	273000000	usd
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-314000000	usd
CY2009	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	10000000	usd
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-80000000	usd
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3133000000	usd
CY2009	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1431000000	usd
CY2009	us-gaap	Amortization Of Esop Award AmortizationOfESOPAward	40000000	usd
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	213000000	usd
CY2009	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	17000000	usd
CY2009	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	1060000000	usd
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	13302000000	usd
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	244000000	usd
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-42000000	usd
CY2010	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	3000000	usd
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	4000000	usd
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	4372000000	usd
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1500000000	usd
CY2010	mmm	Minority Interest Decrease From Purchase Of Subsidiary Shares And Transfers MinorityInterestDecreaseFromPurchaseOfSubsidiarySharesAndTransfers	-256000000	usd
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	311000000	usd
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	880000000	usd
CY2010	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	668000000	usd
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-250000000	usd
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-1280000000	usd
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	54000000	usd
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2881000000	usd
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1555000000	usd
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions	300000000	usd
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2694000000	usd
CY2011	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	906000000	usd
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011Q2	dei	Entity Public Float EntityPublicFloat	67300000000	usd
CY2011	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	31331469	shares
CY2011	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	14323902	shares
CY2009	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	254419	shares
CY2009	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	17310251	shares
CY2010	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	10572666	shares
CY2010	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	11951155	shares
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-1476000000	usd
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	209000000	usd
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-111000000	usd
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	80000000	usd
CY2009	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	33000000	usd
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	115000000	usd
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2801000000	usd
CY2009	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3100000000	usd
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4257000000	usd
CY2011	us-gaap	Use Of Estimates UseOfEstimates	<table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> <p style="MARGIN: 0in 0in 0pt"><i><font style="FONT-STYLE: italic; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">Use of estimates:</font></i><font style="FONT-SIZE: 10pt" size="2"> The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.</font></p></td></tr></table>
CY2011	us-gaap	Advertising Expense AdvertisingExpense	518000000	usd
CY2010	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	919000000	usd
CY2009	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	838000000	usd
CY2011	mmm	Highly Inflationary Economic Environment Inflation Threshold Percent HighlyInflationaryEconomicEnvironmentInflationThresholdPercent	1.00	pure
CY2011	mmm	Highly Inflationary Economic Environment Number Of Years Used In Calculation HighlyInflationaryEconomicEnvironmentNumberOfYearsUsedInCalculation	3
CY2011	mmm	Operating Income Of Subsidiary In Highly Inflationary Country Percent Of Consolidated Amount OperatingIncomeOfSubsidiaryInHighlyInflationaryCountryPercentOfConsolidatedAmount	0.01	pure
CY2011	mmm	Cumulative Inflation Rate Of Subsidiary In Highly Inflationary Country Percent Range Minimum CumulativeInflationRateOfSubsidiaryInHighlyInflationaryCountryPercentRangeMinimum	1.00	pure
CY2010	mmm	Change In Functional Currency Of Subsidiary In Highly Inflationary Country Percent Associated Remeasurement ChangeInFunctionalCurrencyOfSubsidiaryInHighlyInflationaryCountryPercentAssociatedRemeasurement	0.667	pure
CY2011	mmm	Marketable Securities Classification Noncurrent Holding Period Minimum MarketableSecuritiesClassificationNoncurrentHoldingPeriodMinimum	1
CY2011	mmm	Cash And Cash Equivalents Classification When Acquired Maturity Period Maximum CashAndCashEquivalentsClassificationWhenAcquiredMaturityPeriodMaximum	3
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	74000000	usd
CY2011	mmm	Finite Lived Intangible Assets Useful Life Low End Of Range FiniteLivedIntangibleAssetsUsefulLifeLowEndOfRange	1
CY2011	mmm	Finite Lived Intangible Assets Useful Life High End Of Range FiniteLivedIntangibleAssetsUsefulLifeHighEndOfRange	20
CY2010	us-gaap	Advertising Expense AdvertisingExpense	512000000	usd
CY2009	us-gaap	Advertising Expense AdvertisingExpense	414000000	usd
CY2011	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1036000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	82000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Receivables BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables	93000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Inventory BusinessAcquisitionPurchasePriceAllocationCurrentAssetsInventory	77000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Prepaid Expense And Other Assets BusinessAcquisitionPurchasePriceAllocationCurrentAssetsPrepaidExpenseAndOtherAssets	43000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Marketable Securities BusinessAcquisitionPurchasePriceAllocationCurrentAssetsMarketableSecurities	380000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	106000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	980000000	usd
CY2010Q4	mmm	Business Acquisition Purchase Price Allocation Accounts Payable And Other Liabilities Net Of Other Assets BusinessAcquisitionPurchasePriceAllocationAccountsPayableAndOtherLiabilitiesNetOfOtherAssets	164000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Deferred Income Taxes Asset Liability Net BusinessAcquisitionPurchasePriceAllocationDeferredIncomeTaxesAssetLiabilityNet	-225000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Notes Payable And Long Term Debt BusinessAcquisitionPurchasePriceAllocationNotesPayableAndLongTermDebt	105000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net BusinessAcquisitionPurchasePriceAllocationAssetsAcquiredLiabilitiesAssumedNet	1848000000	usd
CY2011	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	703000000	usd
CY2011	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	54000000	usd
CY2011Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Other Noncash Consideration BusinessAcquisitionCostOfAcquiredEntityOtherNoncashConsideration	10000000	usd
CY2010Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Other Noncash Consideration BusinessAcquisitionCostOfAcquiredEntityOtherNoncashConsideration	18000000	usd
CY2010	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	2105000000	usd
CY2010	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	275000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Receivables BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables	31000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Current Assets Inventory BusinessAcquisitionPurchasePriceAllocationCurrentAssetsInventory	10000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Property Plant And Equipment BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment	15000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	-25000000	usd
CY2009Q4	mmm	Business Acquisition Purchase Price Allocation Accounts Payable And Other Liabilities Net Of Other Assets BusinessAcquisitionPurchasePriceAllocationAccountsPayableAndOtherLiabilitiesNetOfOtherAssets	21000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Notes Payable And Long Term Debt BusinessAcquisitionPurchasePriceAllocationNotesPayableAndLongTermDebt	18000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Deferred Income Taxes Asset Liability Net BusinessAcquisitionPurchasePriceAllocationDeferredIncomeTaxesAssetLiabilityNet	-16000000	usd
CY2009Q4	us-gaap	Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net BusinessAcquisitionPurchasePriceAllocationAssetsAcquiredLiabilitiesAssumedNet	69000000	usd
CY2009	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	73000000	usd
CY2009	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	4000000	usd
CY2010	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	1700000000
CY2010	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	18000000	usd
CY2010	us-gaap	Acquired Finite Lived Intangible Asset Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLife	11
CY2010	us-gaap	Finite Lived Intangible Assets Useful Life Minimum FiniteLivedIntangibleAssetsUsefulLifeMinimum	2
CY2010	us-gaap	Finite Lived Intangible Assets Useful Life Maximum FiniteLivedIntangibleAssetsUsefulLifeMaximum	17
CY2010	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	10
CY2009Q4	us-gaap	Acquired Finite Lived Intangible Asset Amount AcquiredFiniteLivedIntangibleAssetAmount	20000000	usd
CY2009Q4	mmm	Acquired Intangible Asset Amount AcquiredIntangibleAssetAmount	28000000	usd
CY2009Q4	us-gaap	Acquired Indefinite Lived Intangible Asset Amount AcquiredIndefiniteLivedIntangibleAssetAmount	8000000	usd
CY2009	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	4
CY2009	us-gaap	Acquired Finite Lived Intangible Asset Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLife	8
CY2009	us-gaap	Finite Lived Intangible Assets Useful Life Minimum FiniteLivedIntangibleAssetsUsefulLifeMinimum	3
CY2009	us-gaap	Finite Lived Intangible Assets Useful Life Maximum FiniteLivedIntangibleAssetsUsefulLifeMaximum	12
CY2010	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	978000000	usd
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	255000000	usd
CY2010Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	1000000	usd
CY2011Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	7000000	usd
CY2010	us-gaap	Goodwill Allocation Adjustment GoodwillAllocationAdjustment	2000000	usd
CY2011	us-gaap	Goodwill Allocation Adjustment GoodwillAllocationAdjustment	4000000	usd
CY2010	mmm	Goodwill Acquired During Period And Allocation Adjustments GoodwillAcquiredDuringPeriodAndAllocationAdjustments	980000000	usd
CY2011	mmm	Goodwill Acquired During Period And Allocation Adjustments GoodwillAcquiredDuringPeriodAndAllocationAdjustments	259000000	usd
CY2011	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	235000000	usd
CY2010	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	176000000	usd
CY2009	us-gaap	Finite Lived Intangible Assets Amortization Expense FiniteLivedIntangibleAssetsAmortizationExpense	181000000	usd
CY2011	us-gaap	Future Amortization Expense Year One FutureAmortizationExpenseYearOne	225000000	usd
CY2011	us-gaap	Future Amortization Expense Year Two FutureAmortizationExpenseYearTwo	214000000	usd
CY2011	us-gaap	Future Amortization Expense Year Three FutureAmortizationExpenseYearThree	191000000	usd
CY2011	us-gaap	Future Amortization Expense Year Four FutureAmortizationExpenseYearFour	178000000	usd
CY2011	us-gaap	Future Amortization Expense Year Five FutureAmortizationExpenseYearFive	165000000	usd
CY2011	us-gaap	Future Amortization Expense After Year Five FutureAmortizationExpenseAfterYearFive	820000000	usd
CY2011Q4	us-gaap	Indefinite Lived Trade Names IndefiniteLivedTradeNames	123000000	usd
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1091000000	usd
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	3007000000	usd
CY2009Q1	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	1200	positions
CY2009Q2	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	900	positions
CY2009Q2	mmm	Voluntary Early Retirement Benefits Participants VoluntaryEarlyRetirementBenefitsParticipants	700	participants
CY2009Q2	mmm	Voluntary Early Retirement Benefits Charge VoluntaryEarlyRetirementBenefitsCharge	21000000	usd
CY2009Q2	us-gaap	Restructuring Reserve Period Expense RestructuringReservePeriodExpense	116000000	usd
CY2009Q3	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	200	positions
CY2009	us-gaap	Restructuring Reserve Period Expense RestructuringReservePeriodExpense	209000000	usd
CY2010	us-gaap	Restructuring Reserve Settled With Cash RestructuringReserveSettledWithCash	54000000	usd
CY2010Q4	us-gaap	Restructuring Reserve RestructuringReserve	22000000	usd
CY2011	us-gaap	Restructuring Reserve Settled With Cash RestructuringReserveSettledWithCash	16000000	usd
CY2011Q4	us-gaap	Restructuring Reserve RestructuringReserve	6000000	usd
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	676000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	385000000	usd
CY2011Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	107000000	usd
CY2011Q4	mmm	Product And Other Insurance Receivables Current ProductAndOtherInsuranceReceivablesCurrent	109000000	usd
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	98000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	1018000000	usd
CY2011Q4	mmm	Product And Other Insurance Receivables Noncurrent ProductAndOtherInsuranceReceivablesNoncurrent	151000000	usd
CY2011Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	223000000	usd
CY2011Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	264000000	usd
CY2011Q4	mmm	Accrued Trade Payables AccruedTradePayables	516000000	usd
CY2011Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	389000000	usd
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	49000000	usd
CY2011Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	6000000	usd
CY2011Q4	mmm	Employee Related Liabilities Excluding Pension And Postretirement Benefits Current EmployeeRelatedLiabilitiesExcludingPensionAndPostretirementBenefitsCurrent	160000000	usd
CY2011Q4	us-gaap	Loss Contingency Accrual Product Liability Undiscounted Due Within One Year LossContingencyAccrualProductLiabilityUndiscountedDueWithinOneYear	159000000	usd
CY2011Q4	mmm	Taxes Other Than Income Taxes Payable Current TaxesOtherThanIncomeTaxesPayableCurrent	94000000	usd
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	53000000	usd
CY2011Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	23000000	usd
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	636000000	usd
CY2011Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	595000000	usd
CY2011Q4	mmm	Employee Benefits Liability Noncurrent EmployeeBenefitsLiabilityNoncurrent	577000000	usd
CY2011Q4	us-gaap	Loss Contingency Accrual Product Liability Net LossContingencyAccrualProductLiabilityNet	329000000	usd
CY2011Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	79000000	usd
CY2011Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	19000000	usd
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	251000000	usd
CY2011Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	7000000	usd
CY2010Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	555000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	282000000	usd
CY2010Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	38000000	usd
CY2010Q4	mmm	Product And Other Insurance Receivables Current ProductAndOtherInsuranceReceivablesCurrent	92000000	usd
CY2010Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	84000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	648000000	usd
CY2010Q4	mmm	Product And Other Insurance Receivables Noncurrent ProductAndOtherInsuranceReceivablesNoncurrent	143000000	usd
CY2010Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	213000000	usd
CY2010Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	258000000	usd
CY2010Q4	mmm	Accrued Trade Payables AccruedTradePayables	476000000	usd
CY2010Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	369000000	usd
CY2010Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	87000000	usd
CY2010Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	22000000	usd
CY2010Q4	mmm	Employee Related Liabilities Excluding Pension And Postretirement Benefits Current EmployeeRelatedLiabilitiesExcludingPensionAndPostretirementBenefitsCurrent	167000000	usd
CY2010Q4	us-gaap	Loss Contingency Accrual Product Liability Undiscounted Due Within One Year LossContingencyAccrualProductLiabilityUndiscountedDueWithinOneYear	132000000	usd
CY2010Q4	mmm	Taxes Other Than Income Taxes Payable Current TaxesOtherThanIncomeTaxesPayableCurrent	196000000	usd
CY2010Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	41000000	usd
CY2010Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	26000000	usd
CY2010Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	506000000	usd
CY2010Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	627000000	usd
CY2010Q4	mmm	Employee Benefits Liability Noncurrent EmployeeBenefitsLiabilityNoncurrent	524000000	usd
CY2010Q4	us-gaap	Loss Contingency Accrual Product Liability Net LossContingencyAccrualProductLiabilityNet	324000000	usd
CY2010Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	18000000	usd
CY2010Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	198000000	usd
CY2010Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	69000000	usd
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	114000000	usd
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	5155000000	usd
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-6000000	usd
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	22000000	usd
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	3000000000	shares
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4283000000	usd
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest	253000000	usd
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest	-213000000	usd
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToNoncontrollingInterest	-288000000	usd
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	7000000	usd
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-260000000	usd
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	1977000000	usd
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	701000000	usd
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	1276000000	usd
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	84000000	usd
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	30000000	usd
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	54000000	usd
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2801000000	usd
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	8000000	usd
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	205000000	usd
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	68000000	usd
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	28000000	usd
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	40000000	usd
CY2010	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	5000000	usd
CY2010	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	2000000	usd
CY2010	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3000000	usd
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	6000000	usd
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	2000000	usd
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	4000000	usd
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4257000000	usd
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	2000000	usd
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	286000000	usd
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	442000000	usd
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	133000000	usd
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	309000000	usd
CY2009	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	17000000	usd
CY2009	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	7000000	usd
CY2009	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	10000000	usd
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent	-130000000	usd
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-50000000	usd
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-80000000	usd
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3100000000	usd
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-475000000	usd
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-307000000	usd
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-306000000	usd
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-197000000	usd
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-141000000	usd
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-92000000	usd
CY2010	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	4128000000	usd
CY2010	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	43000000	usd
CY2009	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	-81000000	usd
CY2009	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	3112000000	usd
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1542000000	usd
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1509000000	usd
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	834000000	usd
CY2011	us-gaap	Interest Paid InterestPaid	219000000	usd
CY2010	us-gaap	Interest Paid InterestPaid	178000000	usd
CY2009	us-gaap	Interest Paid InterestPaid	233000000	usd
CY2011	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	19000000	usd
CY2010	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	17000000	usd
CY2009	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	27000000	usd
CY2009	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	50000000	usd
CY2009	mmm	Amortization Period Of It Investment Years AmortizationPeriodOfITInvestmentYears	7
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2516000000	usd
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	3515000000	usd
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2778000000	usd
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2977000000	usd
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2338000000	usd
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	2294000000	usd
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	431000000	usd
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	837000000	usd
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	88000000	usd
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	51000000	usd
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	73000000	usd
CY2009	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	13000000	usd
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	861000000	usd
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	796000000	usd
CY2009	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	586000000	usd
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	181000000	usd
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	55000000	usd
CY2009	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	489000000	usd
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	12000000	usd
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	43000000	usd
CY2009	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	56000000	usd
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	138000000	usd
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-212000000	usd
CY2009	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	156000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	96000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	99000000	usd
CY2011Q4	mmm	Deferred Tax Assets Deferred Expense Product And Other Claims DeferredTaxAssetsDeferredExpenseProductAndOtherClaims	155000000	usd
CY2010Q4	mmm	Deferred Tax Assets Deferred Expense Product And Other Claims DeferredTaxAssetsDeferredExpenseProductAndOtherClaims	148000000	usd
CY2011Q4	mmm	Deferred Tax Assets Deferred Expense Miscellaneous Accruals DeferredTaxAssetsDeferredExpenseMiscellaneousAccruals	173000000	usd
CY2010Q4	mmm	Deferred Tax Assets Deferred Expense Miscellaneous Accruals DeferredTaxAssetsDeferredExpenseMiscellaneousAccruals	175000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1183000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	724000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	483000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	501000000	usd
CY2011Q4	mmm	Deferred Tax Assets Operating Loss And Capital Loss Carryforwards DeferredTaxAssetsOperatingLossAndCapitalLossCarryforwards	392000000	usd
CY2010Q4	mmm	Deferred Tax Assets Operating Loss And Capital Loss Carryforwards DeferredTaxAssetsOperatingLossAndCapitalLossCarryforwards	437000000	usd
CY2011Q4	mmm	Deferred Tax Assets Foreign Tax Credits DeferredTaxAssetsForeignTaxCredits	286000000	usd
CY2010Q4	mmm	Deferred Tax Assets Foreign Tax Credits DeferredTaxAssetsForeignTaxCredits	281000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	49000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	46000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2817000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2411000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2735000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	2283000000	usd
CY2011Q4	mmm	Deferred Tax Liabilities Product And Other Insurance Receivables DeferredTaxLiabilitiesProductAndOtherInsuranceReceivables	63000000	usd
CY2010Q4	mmm	Deferred Tax Liabilities Product And Other Insurance Receivables DeferredTaxLiabilitiesProductAndOtherInsuranceReceivables	59000000	usd
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	745000000	usd
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	695000000	usd
CY2011Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	798000000	usd
CY2010Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	823000000	usd
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1606000000	usd
CY2010Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1577000000	usd
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1129000000	usd
CY2010Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	706000000	usd
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.007	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.012	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.010	pure
CY2011	mmm	Effective Income Tax Rate Reconciliation Tax Credits Us Business EffectiveIncomeTaxRateReconciliationTaxCreditsUSBusiness	-0.005	pure
CY2010	mmm	Effective Income Tax Rate Reconciliation Tax Credits Us Business EffectiveIncomeTaxRateReconciliationTaxCreditsUSBusiness	-0.002	pure
CY2009	mmm	Effective Income Tax Rate Reconciliation Tax Credits Us Business EffectiveIncomeTaxRateReconciliationTaxCreditsUSBusiness	-0.003	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.046	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.071	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.053	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.012	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.005	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.008	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.015	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.014	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	-0.005	pure
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.008	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001	pure
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.278	pure
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.277	pure
CY2009	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.300	pure
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	92000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	128000000	usd
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	121000000	usd
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	69000000	usd
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	123000000	usd
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-9000000	usd
CY2011	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiaries	77000000	usd
CY2011	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries Impact On Diluted Earnings Per Share IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiariesImpactOnDilutedEarningsPerShare	0.11
CY2010	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiaries	69000000	usd
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	75000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	142000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	161000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	51000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	54000000	usd
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	164000000	usd
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	177000000	usd
CY2009	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	47000000	usd
CY2008Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	557000000	usd
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	618000000	usd
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	622000000	usd
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	594000000	usd
CY2010Q4	us-gaap	Sales Revenue Net SalesRevenueNet	6709000000	usd
CY2010Q4	us-gaap	Cost Of Revenue CostOfRevenue	3575000000	usd
CY2010Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	928000000	usd
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.28
CY2010Q1	us-gaap	Sales Revenue Net SalesRevenueNet	6348000000	usd
CY2010Q2	us-gaap	Sales Revenue Net SalesRevenueNet	6731000000	usd
CY2010Q3	us-gaap	Sales Revenue Net SalesRevenueNet	6874000000	usd
CY2010Q1	us-gaap	Cost Of Revenue CostOfRevenue	3238000000	usd
CY2010Q2	us-gaap	Cost Of Revenue CostOfRevenue	3435000000	usd
CY2010Q3	us-gaap	Cost Of Revenue CostOfRevenue	3583000000	usd
CY2010Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	930000000	usd
CY2010Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1121000000	usd
CY2010Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1106000000	usd
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.57
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.55
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.54
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.53
CY2010	mmm	Prescription Drug Benefit Subsidy And Modifications In Health Care And Education Reconciliation Act Of2010 Effect On Net Income PrescriptionDrugBenefitSubsidyAndModificationsInHealthCareAndEducationReconciliationActOf2010EffectOnNetIncome	84000000	usd
CY2010	mmm	Prescription Drug Benefit Subsidy And Modifications In Health Care And Education Reconciliation Act Of2010 Effect On Diluted Earnings Per Share PrescriptionDrugBenefitSubsidyAndModificationsInHealthCareAndEducationReconciliationActOf2010EffectOnDilutedEarningsPerShare	0.12
CY2011	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriod	0.001	pure
CY2011	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To International Income Tax Rates And Other Items EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToInternationalIncomeTaxRatesAndOtherItems	0.025	pure
CY2010	mmm	Deferred Tax Asset Reduction Prescription Drug Subsidy DeferredTaxAssetReductionPrescriptionDrugSubsidy	84000000	usd
CY2010	mmm	Deferred Tax Asset Reduction Prescription Drug Subsidy Impact On Diluted Earnings Per Share DeferredTaxAssetReductionPrescriptionDrugSubsidyImpactOnDilutedEarningsPerShare	0.12
CY2009Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	425000000	usd
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	295000000	usd
CY2011	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-1000000	usd
CY2010	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-9000000	usd
CY2009	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	6000000	usd
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	56000000	usd
CY2011	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	22000000	usd
CY2010	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-42000000	usd
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	135000000	usd
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	49000000	usd
CY2011Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	4000000	usd
CY2011	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	-3000000	usd
CY2011Q4	us-gaap	Drafts Payable DraftsPayable	82000000	usd
CY2010Q4	mmm	Accumulated Depreciation For Capital Leases AccumulatedDepreciationForCapitalLeases	50000000	usd
CY2010	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries Impact On Diluted Earnings Per Share IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiariesImpactOnDilutedEarningsPerShare	0.10
CY2009	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiaries	50000000	usd
CY2009	mmm	Income Tax Rate Reconciliation Tax Status Of Certain Foreign Subsidiaries Impact On Diluted Earnings Per Share IncomeTaxRateReconciliationTaxStatusOfCertainForeignSubsidiariesImpactOnDilutedEarningsPerShare	0.07
CY2011Q4	mmm	Deferred Tax Liability Not Recognized Undistributed Foreign Earnings DeferredTaxLiabilityNotRecognizedUndistributedForeignEarnings	7100000000	usd
CY2011Q4	us-gaap	Marketable Securities MarketableSecurities	2357000000	usd
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	867000000	usd
CY2011Q4	mmm	Available For Sale Securities Debt Maturities After One Through Three Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughThreeYearsFairValue	1339000000	usd
CY2011Q4	mmm	Available For Sale Securities Debt Maturities After Three Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterThreeThroughFiveYearsFairValue	138000000	usd
CY2011Q4	mmm	Available For Sale Securities Debt Maturities After Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue	13000000	usd
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	12000000	usd
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	3000000	usd
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	3000000	usd
CY2011Q4	mmm	Available For Sale Securities Fair Value Lesser Credit Ratings Disclosure AvailableForSaleSecuritiesFairValueLesserCreditRatingsDisclosure	7000000	usd
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	5368000000	usd
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	5047000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	563000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	927000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1463000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	995000000	usd
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1097000000	usd
CY2007Q2	mmm	Debt Securities Issued Under Medium Term Notes Program Number DebtSecuritiesIssuedUnderMediumTermNotesProgramNumber	3
CY2011	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments ChangeInUnrealizedGainLossOnFairValueHedgingInstruments	-10000000	usd
CY2010	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments ChangeInUnrealizedGainLossOnFairValueHedgingInstruments	-16000000	usd
CY2011	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge	10000000	usd
CY2010	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge	16000000	usd
CY2010	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	2000000	usd
CY2009	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	6000000	usd
CY2009	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-2000000	usd
CY2009	mmm	Impairment Of Long Lived Assets Held For Abandonment ImpairmentOfLongLivedAssetsHeldForAbandonment	13000000	usd
CY2009Q1	us-gaap	Restructuring Reserve Period Expense RestructuringReservePeriodExpense	67000000	usd
CY2009	us-gaap	Restructuring Reserve Settled Without Cash RestructuringReserveSettledWithoutCash	53000000	usd
CY2009	us-gaap	Restructuring Reserve Settled With Cash RestructuringReserveSettledWithCash	266000000	usd
CY2009Q4	us-gaap	Restructuring Reserve RestructuringReserve	76000000	usd
CY2010Q4	us-gaap	Drafts Payable DraftsPayable	82000000	usd
CY2011Q4	mmm	Accumulated Depreciation For Capital Leases AccumulatedDepreciationForCapitalLeases	60000000	usd
CY2009	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	16000000	usd
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	98000000	usd
CY2011Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2010Q1	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	63000000	usd
CY2010Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	663000000	usd
CY2009Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	93000000	usd
CY2011Q4	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0376	pure
CY2010Q4	us-gaap	Longterm Debt Weighted Average Interest Rate LongtermDebtWeightedAverageInterestRate	0.0422	pure
CY2011Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0432	pure
CY2010Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0241	pure
CY2010	mmm	Research Development And Related Expenses ResearchDevelopmentAndRelatedExpenses	1434000000	usd
CY2009Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	233433937	shares
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	232055448	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	249063015	shares
CY2010	mmm	Year On Year Currency Effects On Net Income YearOnYearCurrencyEffectsOnNetIncome	15000000	usd
CY2011	mmm	Year On Year Currency Effects On Net Income YearOnYearCurrencyEffectsOnNetIncome	154000000	usd
CY2010	mmm	Year On Year Derivative And Other Transaction Gain Loss Impact On Net Income YearOnYearDerivativeAndOtherTransactionGainLossImpactOnNetIncome	-115000000	usd
CY2011Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	147000000	usd
CY2011Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1785000000	usd
CY2009	us-gaap	Employee Stock Ownership Plan Esop Dividends Paid To Esop EmployeeStockOwnershipPlanESOPDividendsPaidToESOP	31000000	usd
CY2009	us-gaap	Employee Stock Ownership Plan Esop Interest Payments From Esop EmployeeStockOwnershipPlanESOPInterestPaymentsFromESOP	1000000	usd
CY2009	mmm	Employee Stock Ownership Plan Esop Compensation Expense Debt Service EmployeeStockOwnershipPlanESOPCompensationExpenseDebtService	10000000	usd
CY2009	mmm	Employee Stock Ownership Plan Esop Compensation Expense Treasury Shares EmployeeStockOwnershipPlanESOPCompensationExpenseTreasuryShares	25000000	usd
CY2009	mmm	Employee Stock Ownership Plan Esop Compensation Expense Cash Contributions EmployeeStockOwnershipPlanESOPCompensationExpenseCashContributions	6000000	usd
CY2010	mmm	Employee Stock Ownership Plan Esop Compensation Expense Cash Contributions EmployeeStockOwnershipPlanESOPCompensationExpenseCashContributions	97000000	usd
CY2011	mmm	Employee Stock Ownership Plan Esop Compensation Expense Cash Contributions EmployeeStockOwnershipPlanESOPCompensationExpenseCashContributions	109000000	usd
CY2009Q4	us-gaap	Employee Stock Ownership Plan Esop Number Of Allocated Shares EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares	14473474	shares
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	253000000	usd
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	274000000	usd
CY2009	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	217000000	usd
CY2010	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	176000000	usd
CY2009	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	155000000	usd
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	80000000	usd
CY2009Q4	us-gaap	Assets Assets	27250000000	usd
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1379000000	usd
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1091000000	usd
CY2009	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	903000000	usd
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-5000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	40000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	52000000	usd
CY2009	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	62000000	usd
CY2011	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	173000000	usd
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	79000000	usd
CY2009Q4	us-gaap	Goodwill Goodwill	5832000000	usd
CY2008Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1000000	usd
CY2011Q4	mmm	Defined Benefit Plan Number Of Plans Worldwide Minimum DefinedBenefitPlanNumberOfPlansWorldwideMinimum	65
CY2011Q4	mmm	Number Of Countries In Which Retirement Plans Sponsored NumberOfCountriesInWhichRetirementPlansSponsored	25	countries
CY2009Q4	us-gaap	Defined Benefit Plan Effect Of Plan Amendment On Accumulated Benefit Obligation DefinedBenefitPlanEffectOfPlanAmendmentOnAccumulatedBenefitObligation	-168000000	usd
CY2010Q4	us-gaap	Defined Benefit Plan Effect Of Plan Amendment On Accumulated Benefit Obligation DefinedBenefitPlanEffectOfPlanAmendmentOnAccumulatedBenefitObligation	69000000	usd
CY2009Q2	mmm	Defined Benefit Plan Special Termination Benefits Number Of Participants DefinedBenefitPlanSpecialTerminationBenefitsNumberOfParticipants	700	pure
CY2009Q2	us-gaap	Defined Benefit Plan Cost Of Providing Special Or Contractual Termination Benefit Recognized During Period DefinedBenefitPlanCostOfProvidingSpecialOrContractualTerminationBenefitRecognizedDuringPeriod	21000000	usd
CY2009Q2	mmm	Defined Benefit Plan Special Termination Benefits Number Of Additional Years Of Pension Service DefinedBenefitPlanSpecialTerminationBenefitsNumberOfAdditionalYearsOfPensionService	1
CY2009Q2	mmm	Defined Benefit Plan Special Termination Benefits Number Of Additional Age Of Pension Service DefinedBenefitPlanSpecialTerminationBenefitsNumberOfAdditionalAgeOfPensionService	1
CY2011Q4	mmm	Limited Partnership Interests With Wg Trading Company LimitedPartnershipInterestsWithWGTradingCompany	0.01	pure
CY2009	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-20000000	usd
CY2009	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments ChangeInUnrealizedGainLossOnFairValueHedgingInstruments	16000000	usd
CY2009	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge	-16000000	usd
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	944033056	shares
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	19000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	20000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	18000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	5000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	4000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	34000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	100000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	8000000	usd
CY2011Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	13000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	155000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	113000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	87000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	55000000	usd
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	502000000	usd
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	92000000	usd
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	279000000	usd
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	262000000	usd
CY2009	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	244000000	usd
CY2011Q4	mmm	Primary Capital Leases Number PrimaryCapitalLeasesNumber	2	pure
CY2010Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	27000000.	usd
CY2011Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	28000000	usd
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	56000000	usd
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	17400000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	11800000	shares
CY2011	mmm	Other Comprehensive Income Total Reclassification Adjustment For Debt And Equity Securities Included In Net Income Before Tax OtherComprehensiveIncomeTotalReclassificationAdjustmentForDebtAndEquitySecuritiesIncludedInNetIncomeBeforeTax	10000000	usd
CY2011	mmm	Other Comprehensive Income Total Reclassification Adjustment For Debt And Equity Securities Included In Net Income After Tax OtherComprehensiveIncomeTotalReclassificationAdjustmentForDebtAndEquitySecuritiesIncludedInNetIncomeAfterTax	6000000	usd
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	7311000000	usd
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	7680000000	usd
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	7531000000	usd
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	7089000000	usd
CY2011Q1	us-gaap	Cost Of Revenue CostOfRevenue	3802000000	usd
CY2011Q2	us-gaap	Cost Of Revenue CostOfRevenue	4040000000	usd
CY2011Q3	us-gaap	Cost Of Revenue CostOfRevenue	4027000000	usd
CY2011Q4	us-gaap	Cost Of Revenue CostOfRevenue	3824000000	usd
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1081000000	usd
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1160000000	usd
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1088000000	usd
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	954000000	usd
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.52
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.63
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.54
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.36
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.60
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.52
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2011Q4	mmm	Defined Benefit Plan Special Termination Benefits Number Of Additional Years Of Pension Service DefinedBenefitPlanSpecialTerminationBenefitsNumberOfAdditionalYearsOfPensionService	1
CY2011Q4	mmm	Defined Benefit Plan Special Termination Benefits Number Of Additional Age Of Pension Service DefinedBenefitPlanSpecialTerminationBenefitsNumberOfAdditionalAgeOfPensionService	1
CY2011Q4	mmm	Defined Benefit Plan Special Termination Benefits Number Of Participants DefinedBenefitPlanSpecialTerminationBenefitsNumberOfParticipants	616	pure
CY2011Q4	us-gaap	Defined Benefit Plan Cost Of Providing Special Or Contractual Termination Benefit Recognized During Period DefinedBenefitPlanCostOfProvidingSpecialOrContractualTerminationBenefitRecognizedDuringPeriod	26000000	usd
CY2011Q4	us-gaap	Prescription Drug Subsidy Receipts Year One PrescriptionDrugSubsidyReceiptsYearOne	10000000	usd
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.007	pure
CY2010	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriod	-0.023	pure
CY2010	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To International Income Tax Rates And Other Items EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToInternationalIncomeTaxRatesAndOtherItems	-0.018	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.013	pure
CY2010	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToDeductionsMedicarePrescriptionDrugBenefit	0.015	pure
CY2010	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To Qualified Production Activities EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToQualifiedProductionActivities	-0.009	pure
CY2008Q4	us-gaap	Restructuring Reserve RestructuringReserve	186000000	usd
CY2011Q4	mmm	Floating Rate Long Term Debt Maturities Repayments Of Principal In Next Twenty Four Months FloatingRateLongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwentyFourMonths	73000000	usd
CY2007Q2	mmm	Medium Term Notes Program Established With Prior Shelf Registration MediumTermNotesProgramEstablishedWithPriorShelfRegistration	3000000000	usd
CY2011Q3	mmm	Medium Term Notes Program Established With Prior Shelf Registration MediumTermNotesProgramEstablishedWithPriorShelfRegistration	3000000000	usd
CY2003Q4	mmm	Medium Term Notes Program Established With Prior Shelf Registration MediumTermNotesProgramEstablishedWithPriorShelfRegistration	1500000000	usd
CY2010Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	94000000	usd
CY2008Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	250489769	shares
CY2011Q4	us-gaap	Cost Method Investments CostMethodInvestments	47000000	usd
CY2010Q4	us-gaap	Cost Method Investments CostMethodInvestments	36000000	usd
CY2011Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	10000000	usd
CY2010Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	26000000	usd
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-2000000	usd
CY2010	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To One Time Charge Related To Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToOneTimeChargeRelatedToDeductionsMedicarePrescriptionDrugBenefit	0.015	pure
CY2011Q4	mmm	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Options Restricted Stock And Restricted Stock Units Number Of Participants ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsRestrictedStockAndRestrictedStockUnitsNumberOfParticipants	12944	participants
CY2011	mmm	Effective Income Tax Rate Change From Prior Reporting Period To Current Reporting Period Due To One Time Charge Related To Deductions Medicare Prescription Drug Benefit EffectiveIncomeTaxRateChangeFromPriorReportingPeriodToCurrentReportingPeriodDueToOneTimeChargeRelatedToDeductionsMedicarePrescriptionDrugBenefit	-0.015	pure
CY2010	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	8000000	usd
CY2011	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	-32000000	usd
CY2011	mmm	Unrecognized Tax Benefit Period That Could Impact Effective Tax Rate UnrecognizedTaxBenefitPeriodThatCouldImpactEffectiveTaxRate	P12M
CY2011	us-gaap	Valuation Allowance Methodologies And Assumptions ValuationAllowanceMethodologiesAndAssumptions	P12M
CY2011Q4	mmm	Capital And Operating Leases Non Cancelable Terms Minimum CapitalAndOperatingLeasesNonCancelableTermsMinimum	1
CY2011	mmm	Payments To Acquire And Proceeds From Interest In Subsidiaries And Affiliates Net PaymentsToAcquireAndProceedsFromInterestInSubsidiariesAndAffiliatesNet	49000000	usd
CY2011	mmm	Derivative Primary Counterparties Number With Credit Support Agreements In Place DerivativePrimaryCounterpartiesNumberWithCreditSupportAgreementsInPlace	2	pure
CY2011Q4	mmm	Available For Sale Asset Backed Securities Number Of Securities Disclosure AvailableForSaleAssetBackedSecuritiesNumberOfSecuritiesDisclosure	1
CY2011Q4	mmm	Available For Sale Asset Backed Securities Number Of Securities Disclosure1 AvailableForSaleAssetBackedSecuritiesNumberOfSecuritiesDisclosure1	1
CY2011Q4	mmm	Available For Sale Asset Backed Securities Number Of Securities Disclosure2 AvailableForSaleAssetBackedSecuritiesNumberOfSecuritiesDisclosure2	2

Files In Submission

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2011 Q4 Form 10-K Financial Statement

#000110465912010566 Filed on February 16, 2012

Income Statement

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Facts In Submission

Files In Submission

$MMM 3M CO Stock $mmm

2011 Q4 Form 10-K Financial Statement

#000110465912010566 Filed on February 16, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MMM
3M CO Stock $mmm