Segment Information - Schedule of Geographic Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 11,652	$ 11,789	$ 12,008
Assets exclusive of assets under vehicle programs	10,306	9,668	9,590
Assets under vehicle programs	20,951	19,373	22,979
Net long-lived assets	2,466	2,369	2,488
United States
Segment Reporting Information [Line Items]
Revenues	8,395	8,583	8,775
Assets exclusive of assets under vehicle programs	6,851	6,720	6,460
Assets under vehicle programs	16,584	15,295	18,228
Net long-lived assets	1,487	1,465	1,507
All Other Countries
Segment Reporting Information [Line Items]
Revenues	3,257	3,206	3,233
Assets exclusive of assets under vehicle programs	3,455	2,948	3,130
Assets under vehicle programs	4,367	4,078	4,751
Net long-lived assets	$ 979	$ 904	$ 981