Income Taxes - Deferred Income Tax assets And Liabilities Related To Vehicle Programs (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Other	$ 28	$ 34
Deferred income tax assets	2,698	2,718
Deferred income tax liabilities:
Other	13	7
Deferred income tax liabilities under vehicle programs, net	912	850
Vehicle Programs
Deferred income tax assets:
Depreciation and amortization	73	80
Deferred income tax liabilities:
Depreciation and amortization	2,513	3,497
Other assets
Deferred income tax assets:
Other	20	28
Assets
Deferred income tax assets:
Deferred income tax assets	93	108
Other
Deferred income tax liabilities:
Other	22	29
Liability
Deferred income tax liabilities:
Deferred income tax liabilities	2,535	3,526
Vehicle Programs, Net
Deferred income tax liabilities:
Deferred income tax liabilities under vehicle programs, net	$ 2,442	$ 3,418