NONINTEREST INCOME - Summary of Noninterest Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Noninterest income from contracts with customers	$ 345	$ 315	$ 975	$ 794
Noninterest income within the scope of other GAAP topics	153	220	507	580
Total noninterest income	$ 498	$ 535	$ 1,482	$ 1,374