Income Taxes - Deferred Income Tax assets And Liabilities Related To Vehicle Programs (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred income tax assets:
Other	$ 26	$ 28
Deferred income tax assets	3,042	2,698
Deferred income tax liabilities:
Other	13	13
Deferred income tax liabilities under vehicle programs, net	937	912
Vehicle Programs
Deferred income tax assets:
Depreciation and amortization	73	73
Deferred income tax liabilities:
Depreciation and amortization	2,749	2,513
Other assets
Deferred income tax assets:
Other	10	20
Assets
Deferred income tax assets:
Deferred income tax assets	83	93
Other
Deferred income tax liabilities:
Other	11	22
Liability
Deferred income tax liabilities:
Deferred income tax liabilities	2,760	2,535
Vehicle Programs, Net
Deferred income tax liabilities:
Deferred income tax liabilities under vehicle programs, net	$ 2,677	$ 2,442