Significant Accounting Policies - Leases (Details)	12 Months Ended
Dec. 31, 2022 leaseOption
Minimum
Leases
Number of options to renew for operating leases	1
Number of options to renew for finance leases	1
Maximum
Leases
Operating lease, term (in years)	5 years
Finance lease, term (in years)	5 years

Number Lessee Finance Lease Option To Renew

No definition available.

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- Definition

Number of options to renew for operating leases.

+ References

No definition available.

+ Details

Name:	mmm_NumberLesseeOperatingLeaseOptionToRenew
Namespace Prefix:	mmm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

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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

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Details

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- Details

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