Segment Reporting and Geographic Information - Operations Reporting by Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total finance receivables, net	$ 62,979	$ 58,390
Leased vehicles, net	37,929	39,819	$ 42,100
Total assets	113,786	113,825
North America
Segment Reporting Information [Line Items]
Total finance receivables, net	58,883	53,332
Leased vehicles, net	37,741	39,656
Total assets	106,572	105,507
International
Segment Reporting Information [Line Items]
Total finance receivables, net	4,096	5,058
Leased vehicles, net	188	163
Total assets	$ 7,214	$ 8,318