Segment Information - Schedule of Geographic Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 11,789	$ 12,008	$ 11,994
Assets exclusive of assets under vehicle programs	9,668	9,590	8,499
Assets under vehicle programs	19,373	22,979	17,428
Net long-lived assets	2,369	2,488	2,330
United States
Segment Reporting Information [Line Items]
Revenues	8,583	8,775	8,975
Assets exclusive of assets under vehicle programs	6,720	6,460	5,622
Assets under vehicle programs	15,295	18,228	13,514
Net long-lived assets	1,465	1,507	1,386
All Other Countries
Segment Reporting Information [Line Items]
Revenues	3,206	3,233	3,019
Assets exclusive of assets under vehicle programs	2,948	3,130	2,877
Assets under vehicle programs	4,078	4,751	3,914
Net long-lived assets	$ 904	$ 981	$ 944