Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interest	$ 82	$ 1,525	$ 1,385	$ 3,152
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(705)	170	(876)	(52)
Defined benefit pension and postretirement plans adjustment	85	121	172	240
Cash flow hedging instruments	88	(11)	87	47
Total other comprehensive income (loss), net of tax	(532)	280	(617)	235
Comprehensive income (loss) including noncontrolling interest	(450)	1,805	768	3,387
Comprehensive (income) loss attributable to noncontrolling interest	0	0	(3)	(4)
Comprehensive income (loss) attributable to 3M	$ (450)	$ 1,805	$ 765	$ 3,383