Consolidated Statement of Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 8,312	$ 8,619	$ 24,668	$ 26,150
Operating expenses
Cost of sales	4,580	4,728	13,799	14,647
Selling, general and administrative expenses	5,992	1,998	19,901	6,903
Research, development and related expenses	430	461	1,375	1,417
Gain on business divestitures	(36)	(2,724)	(36)	(2,724)
Total operating expenses	10,966	4,463	35,039	20,243
Operating income (loss)	(2,654)	4,156	(10,371)	5,907
Other expense (income), net	200	24	317	112
Income (loss) before income taxes	(2,854)	4,132	(10,688)	5,795
Provision (benefit) for income taxes	(781)	271	(2,755)	550
Income (loss) of consolidated group	(2,073)	3,861	(7,933)	5,245
Income (loss) from unconsolidated subsidiaries, net of taxes	2	2	7	3
Net income (loss) including noncontrolling interest	(2,071)	3,863	(7,926)	5,248
Less: Net income (loss) attributable to noncontrolling interest	4	4	14	12
Net income (loss) attributable to 3M	$ (2,075)	$ 3,859	$ (7,940)	$ 5,236
Weighted average 3M common shares outstanding - basic (in shares)	554.3	568.8	553.7	570.7
Earnings (loss) per share attributable to 3M common shareholders — basic (in dollars per share)	$ (3.74)	$ 6.79	$ (14.34)	$ 9.18
Weighted average 3M common shares outstanding - diluted (in shares)	554.3	570.0	553.7	572.6
Earnings (loss) per share attributable to 3M common shareholders — diluted (in dollars per share)	$ (3.74)	$ 6.77	$ (14.34)	$ 9.15