Other Assets and Other Liabilities and Deferred Income (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Other Assets and Other Liabilities [Abstract]
Accrued interest and other non-finance receivables	$ 538	$ 584
Property, Plant and Equipment, Net	225	224
Collateral held for resale, at net realizable value, and other inventory	188	258
Deferred charges - income taxes	207	190
Prepaid Reinsurance Premiums and Other Reinsurance Recoverables	751	743
Operating lease assets	71	76
Investment in non-consolidated affiliates	159	133
Restricted Cash and Cash Equivalents	119	128
Other	224	188
Other assets	2,482	2,524
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	403	397
Unearned Premiums and Fees	864	857
Interest Payable	544	667
Taxes Payable	232	229
Deferred Revenue	26	62
Operating Lease, Liability	73	78
Other Liabilities	1,965	2,166
Related Party Transactions Income Taxes and Related Interest Payable	127	101
Other Liabilities, Miscellaneous	226	273
Restricted Cash	119	128
Property Subject to Operating Lease [Member]
Other Assets and Other Liabilities [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 4,720	$ 4,815