DERIVATIVES AND HEDGING ACTIVITIES - Schedule of the Components of AOCI Related to Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 6,696	$ 6,956
Total other comprehensive income (loss), net of tax	1	0
Balance at end of period	6,885	$ 7,046
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(3)
Other comprehensive loss before reclassifications, net of tax	0
Reclassification adjustment for net gains included in net interest revenues, net of tax	1
Total other comprehensive income (loss), net of tax	1
Balance at end of period	$ (2)