Parent Company Condensed Financial Information (Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 5,062	$ 15,621
Equity securities	1,102	1,071
Total finance receivables and loans	122,268	118,534
Allowance for loan losses	(3,267)	(3,283)	$ (1,263)
Finance receivables and loans, net	119,001	115,251
Investment in operating leases, net	10,862	9,639
Other assets	8,057	6,415
Total assets	182,114	182,165	180,644
Short-term borrowings	0	2,136
Long-term debt	17,029	22,006
Interest payable	210	412
Accrued expenses and other liabilities	2,753	2,434
Total liabilities	165,064	167,462
Total equity	17,050	14,703	$ 14,416	$ 13,268
Total liabilities and equity	182,114	182,165
Parent company
Cash and cash equivalents	3,647	4,482
Equity securities	6	0
Total finance receivables and loans	663	913
Allowance for loan losses	26	(10)
Finance receivables and loans, net	689	903
Investments in bank subsidiaries	16,728	17,146
Investments in nonbank subsidiaries	5,890	6,090
Intercompany receivables from subsidiaries	216	176
Investment in operating leases, net	21	5
Other assets	1,157	2,034
Total assets	28,354	30,836
Short-term borrowings	0	2,136
Long-term debt	9,410	12,014
Interest payable	87	111
Intercompany debt to subsidiaries	1,040	1,375
Intercompany payables to subsidiaries	98	91
Accrued expenses and other liabilities	669	406
Total liabilities	11,304	16,133
Total equity	17,050	14,703
Total liabilities and equity	28,354	30,836
Deposits by parent at subsidiaries	3,600	4,400
Liquidity available to parent from funds advanced to subsidiary	207	197
Guarantor subsidiaries
Long-term debt	$ 2,000	$ 2,000