Variable Interest Entities and Other Transfers of Finance Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Restricted cash	$ 3,643
Finance receivables, net of fees	81,650	$ 74,514
Lease related assets	31,061	32,701
Secured debt	45,271	42,131
Securitization and Credit Facility VIEs
Variable Interest Entity [Line Items]
Restricted cash	3,458	2,535
Finance receivables, net of fees	43,931	38,774
Lease related assets	16,120	18,456
Secured debt	$ 45,334	$ 42,188