The amount of debt that was designated as a hedging instrument for a net investment hedge relationship.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CCC
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109998896-113959

+ Details

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- Details

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=mmm_ForeignCurrencyDenominatedDebtMember
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Derivatives - Net Investment Hedges (Details) - Net Investment Hedges € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 EUR (€)
Net investment hedges
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income	$ 61	$ 169
Foreign currency forward contracts
Net investment hedges
Derivative notional amount \| €			€ 150
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income	2	2
Foreign currency denominated debt
Net investment hedges
Face amount of debt designated as a net investment hedge (in euros) \| €			€ 2,400
Pretax Gain (Loss) Recognized as Cumulative Translation within Other Comprehensive Income	$ 59	$ 167