INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Federal and state net operating and capital loss carryforwards	$ 651
Deferred tax asset valuation allowance	137	$ 133
Interest on unrecognized tax benefits accrued (released) during period	3
Accrued interest on unrecognized tax benefits	4
Capital Loss Carryforward
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Capital loss carryforward	152
Tax Years Ended Prior to 1988
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Base year loan loss reserves attributable to prior years	$ 557