Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Balance at December 31, beginning balance		$ 756	$ 781
Acquisitions		0	0
Divestitures		(41)	(22)
Impairment	$ (674)	(674)	0
Translation		1	(3)
Balance at December 31, ending balance		42	756
Americas
Goodwill [Roll Forward]
Balance at December 31, beginning balance		715	724
Acquisitions		0	0
Divestitures		(41)	(9)
Impairment		(674)	0
Translation		0	0
Balance at December 31, ending balance		0	715
Asia Pacific
Goodwill [Roll Forward]
Balance at December 31, beginning balance		41	57
Acquisitions		0	0
Divestitures		0	(13)
Impairment		0	0
Translation		1	(3)
Balance at December 31, ending balance		$ 42	$ 41