OTHER ASSETS AND OTHER LIABILITIES AND DEFERRED REVENUE - Schedule of Other Assets and Other Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Other Assets and Other Liabilities and Deferred Income [Abstract]
Prepaid reinsurance premiums and other reinsurance recoverables	$ 966	$ 876
Accrued interest and other non-finance receivables	767	666
Deferred tax assets	475	178
Collateral held for resale, at net realizable value	464	392
Property and equipment, net of accumulated depreciation	335	283
Investment in non-consolidated affiliates	187	182
Restricted cash	107	88
Operating lease assets	41	40
Other	304	350
Total other assets	3,646	3,055
Tax receivable from affiliated	46	0
Accumulated depreciation	$ 420	$ 448