Other Assets and Other Liabilities and Deferred Income (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Other Assets and Other Liabilities [Abstract]
Accrued interest and other non-finance receivables	$ 544	$ 576
Property, Plant and Equipment, Net	253	233
Collateral held for resale, at net realizable value, and other inventory	233	233
Deferred charges - income taxes	175	158
Prepaid Reinsurance Premiums and Other Reinsurance Recoverables	798	779
Operating lease assets	60	64
Investment in non-consolidated affiliates	163	177
Other	290	229
Other assets	2,647	2,576
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	438	415
Unearned Premiums and Fees	910	891
Interest Payable	797	683
Taxes Payable	191	115
Operating Lease, Liability	63	66
Other Liabilities	2,253	2,035
Related Party Transactions Income Taxes and Related Interest Payable	109	36
Other Liabilities, Miscellaneous	292	280
Restricted Cash	131	127
Property Subject to Operating Lease [Member]
Other Assets and Other Liabilities [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 4,017	$ 4,234