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

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

+ Details

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Balance Type:	na
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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/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 182
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-182

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
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-Section 50
-Paragraph 4CCC
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CCC

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_NetInvestmentHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=mmm_ForeignCurrencyDenominatedDebtMember
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Balance Type:
Period Type:

Derivatives - Net Investment Hedges (Details) - Net Investment Hedges $ in Millions, € in Billions	12 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2025 EUR (€)
Net investment hedges
Total	$ (377)	$ 107	$ (91)
Cross Currency Interest Rate Contract
Net investment hedges
Derivative, notional amount	3,700
Foreign currency forward/option contracts and cross-currency swaps
Net investment hedges
Total	(144)	(1)	(5)
Foreign currency denominated debt
Net investment hedges
Face amount of debt designated as a net investment hedge (in euros) \| €				€ 1.8
Total	$ (233)	$ 108	$ (86)