Selected Quarterly Financial Data (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Total revenue					$ 10,250	$ 11,462	$ 12,623
Depreciation on vehicles subject to operating leases					(1,626)	(3,235)	(3,635)
Interest expense					(2,790)	(3,402)	(4,389)
Total financing margin and other revenue					5,834	4,825	4,599
Provision for credit losses					(310)	828	296
Net income	$ 827	$ 1,041	$ 476	$ (6)	$ 4,521	$ 2,338	$ 2,620