Consolidated Statement of Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 8,325	$ 8,702	$ 16,356	$ 17,531
Operating expenses
Cost of sales	4,606	5,093	9,219	9,919
Selling, general and administrative expenses	12,204	3,023	13,909	4,905
Research, development and related expenses	473	476	945	956
Total operating expenses	17,283	8,592	24,073	15,780
Operating income (loss)	(8,958)	110	(7,717)	1,751
Other expense (income), net	65	50	117	88
Income (loss) before income taxes	(9,023)	60	(7,834)	1,663
Provision (benefit) for income taxes	(2,184)	(23)	(1,974)	279
Income (loss) of consolidated group	(6,839)	83	(5,860)	1,384
Income (loss) from unconsolidated subsidiaries, net of taxes	3	(1)	5	1
Net income (loss) including noncontrolling interest	(6,836)	82	(5,855)	1,385
Less: Net income (loss) attributable to noncontrolling interest	5	4	10	8
Net income (loss) attributable to 3M	$ (6,841)	$ 78	$ (5,865)	$ 1,377
Weighted average 3M common shares outstanding - basic (in shares)	553.9	571.0	553.3	571.6
Earnings (loss) per share attributable to 3M common shareholders — basic (in dollars per share)	$ (12.35)	$ 0.14	$ (10.60)	$ 2.41
Weighted average 3M common shares outstanding - diluted (in shares)	553.9	572.7	553.3	573.8
Earnings (loss) per share attributable to 3M common shareholders — diluted (in dollars per share)	$ (12.35)	$ 0.14	$ (10.60)	$ 2.40