Parent Company Condensed Financial Information (Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 5,571	$ 5,062
Equity securities	681	1,102
Finance receivables and loans, net of unearned income	135,748	122,268
Allowance for loan losses	(3,711)	(3,267)	$ (3,283)
Finance receivables and loans, net	132,037	119,001
Investment in operating leases, net	10,444	10,862
Other assets	9,138	8,057
Total assets	191,826	182,114	182,165
Long-term debt	17,762	17,029
Interest payable	408	210
Accrued expenses and other liabilities	2,648	2,753
Total liabilities	178,967	165,064
Total equity	12,859	17,050	$ 14,703	$ 14,416
Total liabilities and equity	191,826	182,114
Parent company
Cash and cash equivalents	3,333	3,647
Equity securities	0	6
Finance receivables and loans, net of unearned income	560	663
Allowance for loan losses	23	26
Finance receivables and loans, net	583	689
Bank subsidiaries	13,197	16,728
Nonbank subsidiaries	5,191	5,890
Intercompany receivables from subsidiaries	223	216
Investment in operating leases, net	21	21
Other assets	1,307	1,157
Total assets	23,855	28,354
Long-term debt	10,035	9,410
Interest payable	84	87
Intercompany debt to subsidiaries	545	1,040
Intercompany payables to subsidiaries	41	98
Accrued expenses and other liabilities	291	669
Total liabilities	10,996	11,304
Total equity	12,859	17,050
Total liabilities and equity	23,855	28,354
Deposits by parent at subsidiaries	3,300	3,600
Guarantor subsidiaries
Long-term debt	$ 2,000	$ 2,000