Transfers of Receivables - Interest Expense on Securitization Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Securitization Transactions [Line Items]
Interest expense	$ 3,334	$ 2,790	$ 3,402
Securitization Transactions [Member]
Securitization Transactions [Line Items]
Interest expense	1,276	943	1,202
Securitization Transactions [Member] | Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Securitization Transactions [Line Items]
Interest expense	267	114	152
Securitization Transactions [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Securitization Transactions [Line Items]
Interest expense	$ 1,009	$ 829	$ 1,050