LOANS AND LEASES - Schedule of Loans to Related Parties (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Financing Receivable, Excluding Accrued Interest [Roll Forward]
Balance at Beginning of Year	$ 32,323	[1]
Balance at End of Year	33,939	[1]
Related Party
Financing Receivable, Excluding Accrued Interest [Roll Forward]
Balance at Beginning of Year	12
New loans	1
Repayments	(8)
Other	1
Balance at End of Year	$ 6

[1] Amount represents loans for which we have elected the fair value option. See Note 25.