LEASES - Schedule of Operating Lease Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Lease income – operating leases	$ 966	$ 895	$ 796
Variable lease income – operating leases	82	76	68
Rental income on operating leases	1,048	971	864
Interest income – sales type and direct financing leases	175	171	169
Variable lease income included in other noninterest income	61	59	51
Interest income – leveraged leases	4	12	20
Total lease income	$ 1,288	$ 1,213	$ 1,104