OTHER NON-INTEREST INCOME AND OTHER NON-INTEREST EXPENSES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Noninterest Income [Abstract]
Payment protection products	$ 38	$ 33	$ 77	$ 68
Loss from equity method investment	(21)		(33)
Other		1	1	1
Total other non-interest income	17	34	45	69
Other Noninterest Expenses [Abstract]
Professional services and regulatory fees	38	35	69	66
Occupancy expense	6	7	12	15
Other	13	25	32	34
Total other non-interest expenses	$ 57	$ 67	$ 113	$ 115