Goodwill, Net and Intangible Assets, Net - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 3,940	$ 4,013	$ 4,068	$ 4,071
Accumulated impairment losses	(1,193)	(1,193)	(781)	0
Goodwill, net	2,747	2,820	3,287	$ 4,071
Goodwill [Roll Forward]
Beginning balance, goodwill	2,820	3,287	4,071
Foreign currency translation	47	(120)	(23)
Other	0	3	(5)
Dispositions	(125)	0	0
Goodwill impairment	0	(412)	(781)
Ending balance, goodwill	2,747	2,820	3,287
Disposition	125	0	0
Goodwill, impairment loss, net of tax		395	750
Goodwill impairment	0	412	781
Discontinued Operations, Disposed of by Means Other than Sale, Donation | PARC
Goodwill [Roll Forward]
Dispositions	(115)
Disposition	115
U.S. Acquisitions
Goodwill [Roll Forward]
Acquisitions	0	0	9
U.K. Acquisitions
Goodwill [Roll Forward]
Acquisitions	5	28	0
Canada Acquisition
Goodwill [Roll Forward]
Acquisitions	$ 0	$ 34	$ 16