DERIVATIVES - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Notional amount	$ 279,484	$ 309,553
Derivative Assets
Total derivative assets	1,476	1,593
Less: Gross amounts offset in the Consolidated Balance Sheets	(391)	(471)
Less: Cash collateral applied	(677)	(682)
Total net derivatives presented in the Consolidated Balance Sheets	408	440
Derivative Liabilities
Derivative Liabilities	1,710	2,183
Less: Gross amounts offset in the Consolidated Balance Sheets	(391)	(471)
Less: Cash collateral applied	(99)	(150)
Total net derivatives presented in the Consolidated Balance Sheets	1,220	1,562
Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	210,407	222,658
Derivative Assets
Total derivative assets	1,074	1,420
Derivative Liabilities
Derivative Liabilities	1,705	2,139
Interest rate contracts
Derivative Assets
Total derivative assets	562	464
Derivative Liabilities
Derivative Liabilities	910	1,149
Interest rate contracts | Derivatives designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	69,077	86,895
Derivative Assets
Total derivative assets	402	173
Derivative Liabilities
Derivative Liabilities	5	44
Interest rate contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	171,193	185,993
Derivative Assets
Total derivative assets	160	291
Derivative Liabilities
Derivative Liabilities	905	1,105
Foreign exchange contracts
Derivative Assets
Total derivative assets	472	434
Derivative Liabilities
Derivative Liabilities	411	378
Foreign exchange contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	34,749	32,528
Derivative Assets
Total derivative assets	472	434
Derivative Liabilities
Derivative Liabilities	411	378
Commodities contracts
Derivative Assets
Total derivative assets	429	685
Derivative Liabilities
Derivative Liabilities	379	640
Commodities contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	1,136	1,251
Derivative Assets
Total derivative assets	429	685
Derivative Liabilities
Derivative Liabilities	379	640
TBA contracts
Derivative Assets
Total derivative assets	10	3
Derivative Liabilities
Derivative Liabilities	8	16
TBA contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	2,714	2,337
Derivative Assets
Total derivative assets	10	3
Derivative Liabilities
Derivative Liabilities	8	16
Other contracts
Derivative Assets
Total derivative assets	3	7
Derivative Liabilities
Derivative Liabilities	2	0
Other contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	615	549
Derivative Assets
Total derivative assets	3	7
Derivative Liabilities
Derivative Liabilities	$ 2	$ 0