LOANS AND LEASES - Schedule of Loans Pledged as Collateral (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
FHLB of Atlanta
Pledged non-PCD loans	$ 148,692	$ 147,930	$ 141,358
FHLB of Atlanta \| Non-PCD \| Asset Pledged as Collateral
FHLB of Atlanta
Lendable collateral value of pledged non-PCD loans	18,799	19,225
Less: advances	0	0
Less: letters of credit	1,450	1,450
Available borrowing capacity	17,349	17,775
Pledged non-PCD loans	31,368	31,713
FRB \| Non-PCD \| Asset Pledged as Collateral
FHLB of Atlanta
Pledged non-PCD loans	13,924	13,640
FRB
Lendable collateral value of pledged non-PCD loans	12,944	12,962
Less: advances	0	0
Available borrowing capacity	12,944	12,962
FDIC \| Asset Pledged as Collateral
FHLB of Atlanta
Pledged non-PCD loans	32,516	34,465
FDIC
Lendable collateral value of pledged loans	33,756	35,705
Less: advances	0	0
Less: principal amount of the Purchase Money Note	31,000	33,500
Available borrowing capacity	$ 0	$ 0

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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