Segment Reporting and Geographic Information - Operations Reporting by Assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Finance receivables, net	$ 84,637	$ 74,514
Leased vehicles, net	30,582	32,701	$ 37,900
Total assets	132,011	122,545
North America
Segment Reporting Information [Line Items]
Finance receivables, net	78,148	69,705
Leased vehicles, net	30,227	32,454
Total assets	122,128	114,612
International
Segment Reporting Information [Line Items]
Finance receivables, net	6,489	4,809
Leased vehicles, net	356	247
Total assets	$ 9,883	$ 7,934