Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 11,061	$ 9,158	$ 9,158
Acquisitions			1,399	1,708	2,144
Foreign currency translation adjustment			219	40	(166)
Impairment charge for the period	$ 0	$ 0			(72)
Divestitures			(3)	(201)	(204)
Reclassified as held for sale				201	201
Goodwill, ending balance	12,676	10,906	12,676	10,906	11,061
Americas Materials Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance			5,803	4,417	4,417
Acquisitions			1,064	1,270	1,426
Foreign currency translation adjustment			15	(11)	(40)
Impairment charge for the period					0
Divestitures			0	0	0
Reclassified as held for sale				0	0
Goodwill, ending balance	6,882	5,676	6,882	5,676	5,803
Americas Building Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance			3,070	2,752	2,752
Acquisitions			195	160	333
Foreign currency translation adjustment			9	1	(12)
Impairment charge for the period					0
Divestitures			0	0	(3)
Reclassified as held for sale				0	0
Goodwill, ending balance	3,274	2,913	3,274	2,913	3,070
International Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance			2,188	1,989	1,989
Acquisitions			140	278	385
Foreign currency translation adjustment			195	50	(114)
Impairment charge for the period					(72)
Divestitures			(3)	(201)	(201)
Reclassified as held for sale				201	201
Goodwill, ending balance	$ 2,520	$ 2,317	$ 2,520	$ 2,317	$ 2,188