Other Assets and Other Liabilities and Deferred Income (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Other Assets [Abstract]
Accrued interest and other non-finance receivables	$ 584	$ 837
Collateral held for resale, at net realizable value, and other inventory	258	675
Prepaid reinsurance premiums and other reinsurance recoverables	743	708
Deferred charges - income taxes	190	166
Property and equipment, net of accumulated depreciation	224	219
Restricted cash	128	647
Investment in non-consolidated affiliates	133	132
Operating Lease, Right-of-Use Asset	76	98
Other	188	223
Total other assets	2,524	3,705	$ 3,390
Accumulated depreciation	397	365
Other Liabilities and Deferred Income [Abstract]
Unearned insurance premiums and fees	857	822
Interest payable	667	857
Taxes Payable	229	121
Operating Lease, Liability	78	100
Deferred revenue	62	87
Other	273	293
Other liabilities and deferred income	2,166	2,280
Related Party Transactions Income Taxes and Related Interest Payable	$ 101	$ 16
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Statement of Financial Position [Extensible List]
Accounting Standards Update 2016-13 [Member]
Other Assets [Abstract]
Investment in non-consolidated affiliates	$ 8
Total other assets			$ (8)