Finance Receivables - Allowance for Loan Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for retail loan losses beginning balance	$ 2,096
Charge-offs	(1,423)
Allowance for retail loan losses ending balance	2,344	$ 2,096
Retail Finance Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for retail loan losses beginning balance	2,062	1,839	$ 1,915
Provision for loan losses	826	668	267
Charge-offs	(1,423)	(1,138)	(897)
Recoveries	767	685	571
Foreign currency translation and other	76	9	(17)
Allowance for retail loan losses ending balance	$ 2,308	$ 2,062	$ 1,839