Cover	Mar. 13, 2025
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Mar. 13, 2025
Entity File Number	1-3285
Entity Registrant Name	3M COMPANY
Entity Central Index Key	0000066740
Entity Tax Identification Number	41-0417775
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	3M Center
Entity Address, City or Town	St. Paul
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55144-1000
City Area Code	651
Local Phone Number	733-1110
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Common Stock [Member] | NEW YORK STOCK EXCHANGE, INC. [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, Par Value $.01 Per Share
Trading Symbol	MMM
Security Exchange Name	NYSE
Common Stock [Member] | NYSE CHICAGO, INC. [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, Par Value $.01 Per Share
Trading Symbol	MMM
Security Exchange Name	CHX
Notes 1. 500 Percent Due 2026 [Member] | NEW YORK STOCK EXCHANGE, INC. [Member]
Document Information [Line Items]
Title of 12(b) Security	1.500% Notes due 2026
Trading Symbol	MMM26
Security Exchange Name	NYSE
Notes 1. 750 Percent Due 2030 [Member] | NEW YORK STOCK EXCHANGE, INC. [Member]
Document Information [Line Items]
Title of 12(b) Security	1.750% Notes due 2030
Trading Symbol	MMM30
Security Exchange Name	NYSE
Notes 1. 500 Percent Due 2031 [Member] | NEW YORK STOCK EXCHANGE, INC. [Member]
Document Information [Line Items]
Title of 12(b) Security	1.500% Notes due 2031
Trading Symbol	MMM31
Security Exchange Name	NYSE