Finance Receivables - Schedule of Finance Receivables, Net (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for loan losses	$ (2,355)	$ (2,344)
Total finance receivables, net	85,771	84,637
Level 2
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value utilizing inputs	14,860	14,216
Level 3
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value utilizing inputs	71,427	70,911
Retail finance receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	73,230	72,729	$ 67,704
Less: allowance for loan losses	(2,320)	(2,308)	$ (2,123)	$ (2,062)
Total finance receivables, net	70,911	70,421
Commercial finance receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	14,895	14,251
Less: allowance for loan losses	(35)	(36)
Total finance receivables, net	14,860	14,216
Dealer cash management balances	2,800	2,600
Commercial finance receivables | Dealer Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	14,122	13,422
Commercial finance receivables | Other Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 773	$ 830