Business Segments - Schedule of Business Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025		Jun. 30, 2024		Dec. 31, 2024
Business Segment Information
Net sales	$ 6,344	$ 6,255	$ 12,298		$ 12,271
Selling, general and administrative expenses	1,267	1,132	2,212		2,260
Research, development and related expenses	288	280	573		534
Total company operating income	1,140	1,272	2,386		2,421
Loss on business divestitures	(3)	0	(3)	[1]	0	[1]
Total operating expenses	5,204	4,983	9,912		9,850
Other expense (income), net	217	(138)	78		82
Income from continuing operations before income taxes	923	1,410	2,308		2,339
Depreciation and amortization	290	302	580		592
Capital expenditures	208	269	444		567
All other current assets	734		734				$ 771
Total assets	37,989		37,989				39,868
Operating Segments
Business Segment Information
Net sales	6,257	6,165	12,116		12,141
Total company operating income	1,451	1,259	2,718		2,613
Inventories	3,871		3,871				3,497
All other current assets	9,556		9,556				12,387
Total non-current assets	24,562		24,562				23,984
Operating Segments | Safety and Industrial
Business Segment Information
Net sales	2,857	2,759	5,602		5,491
Cost of sales	1,537	1,462	3,007		2,949
Selling, general and administrative expenses	472	559	926		1,031
Research, development and related expenses	127	126	252		242
Total company operating income	721	612	1,417		1,269
Depreciation and amortization	141	137	280		272
Capital expenditures	77	81	155		157
Inventories	1,726		1,726				1,509
Operating Segments | Transportation and Electronics
Business Segment Information
Net sales	2,130	2,143	4,120		4,247
Cost of sales	1,277	1,255	2,520		2,500
Selling, general and administrative expenses	270	342	546		615
Research, development and related expenses	121	118	240		223
Total company operating income	462	428	814		909
Depreciation and amortization	111	113	219		220
Capital expenditures	64	129	153		275
Inventories	1,341		1,341				1,269
Operating Segments | Consumer
Business Segment Information
Net sales	1,270	1,263	2,394		2,403
Cost of sales	748	749	1,417		1,429
Selling, general and administrative expenses	223	261	427		475
Research, development and related expenses	31	34	63		64
Total company operating income	268	219	487		435
Depreciation and amortization	36	39	75		77
Capital expenditures	16	20	27		44
Inventories	804		804				$ 719
Corporate and Other
Business Segment Information
Net sales	87	90	182		130
Net costs for significant litigation	(330)	(8)	(401)		(71)
Divestiture costs	0	(14)	0		(20)
Loss on business divestitures	(3)	0	(3)		0
Total corporate special items	(333)	(22)	(404)		(91)
Other corporate (expense) income - net	22	35	72		(101)
Total operating expenses	(311)	13	(332)		(192)
Depreciation and amortization	2	13	6		23
Capital expenditures	$ 51	$ 39	$ 109		$ 91

[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.