NONINTEREST INCOME - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Wealth fees
Disaggregation of Revenue [Line Items]
Trailing commission income	$ 4	$ 4	$ 11	$ 11