Consolidated Statement of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024		Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss) attributable to 3M	$ 1,372	$ (2,075)	$ 3,445		$ (7,940)
Net income (loss) attributable to noncontrolling interest	4	4	15		14
Net income (loss) including noncontrolling interest	1,376	(2,071)	3,460	[1]	(7,926)	[1]
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	368	(365)	15		(224)
Defined benefit pension and postretirement plans adjustment	48	50	1,009		151
Cash flow hedging instruments	(74)	21	(55)		20
Total other comprehensive income (loss), net of tax	342	(294)	969		(53)
Comprehensive income (loss) including noncontrolling interest	1,718	(2,365)	4,429		(7,979)
Comprehensive (income) loss attributable to noncontrolling interest	(3)	(3)	(14)		(14)
Comprehensive income (loss) attributable to 3M	$ 1,715	$ (2,368)	$ 4,415		$ (7,993)

[1] The Consolidated Statements of Cash Flows include the results of continuing and discontinued operations and, therefore, also include cash and cash equivalents associated with Solventum through its April 2024 separation from 3M that were presented in current assets of discontinued operations in the 3M Consolidated Balance Sheet.