Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interest	$ 1,303	$ 1,627
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(171)	(222)
Defined benefit pension and postretirement plans adjustment	87	119
Cash flow hedging instruments	(1)	58
Total other comprehensive income (loss), net of tax	(85)	(45)
Comprehensive income (loss) including noncontrolling interest	1,218	1,582
Comprehensive (income) loss attributable to noncontrolling interest	(3)	(4)
Comprehensive income (loss) attributable to 3M	$ 1,215	$ 1,578