Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 13,099	$ 11,061	$ 11,061
Acquisitions	43	340	1,820
Foreign currency translation adjustment	(34)	74	228
Impairment charge	(48)	0
Reallocation	0
Divestitures	(468)		(10)
Goodwill, ending balance	12,592	11,475	13,099
Americas Materials Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	6,964	5,803	5,803
Acquisitions	19	184	1,144
Foreign currency translation adjustment	(9)	2	24
Impairment charge	0
Reallocation	0
Divestitures	0		(7)
Goodwill, ending balance	6,974	5,989	6,964
Americas Building Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	3,328	3,070	3,070
Acquisitions	0	142	188
Foreign currency translation adjustment	(2)	1	70
Impairment charge	0
Reallocation	(14)
Divestitures	(300)		0
Goodwill, ending balance	3,012	3,213	3,328
International Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	2,807	2,188	2,188
Acquisitions	24	14	488
Foreign currency translation adjustment	(23)	71	134
Impairment charge	(48)
Reallocation	14
Divestitures	(168)		(3)
Goodwill, ending balance	$ 2,606	$ 2,273	$ 2,807