Annual report pursuant to Section 13 and 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Hedging instruments (Details)

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DERIVATIVE FINANCIAL INSTRUMENTS - Hedging instruments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Derivatives, Fair Value [Line Items]    
Notional value $ 45,809 $ 38,192
Asset derivatives included in accrued income and other assets    
Total contracts 610 1,723
Liability derivatives included in accrued expenses and other liabilities    
Total contracts 668 1,421
Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Total contracts 610 1,723
Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Total contracts 668 1,421
Interest rate contracts | Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Interest rate contracts designated as hedging instruments 24 868
Interest rate contracts not designated as hedging instruments 456 718
Interest rate contracts | Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Interest rate contracts designated as hedging instruments 0 519
Interest rate contracts not designated as hedging instruments 580 757
Foreign exchange contracts | Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Interest rate contracts designated as hedging instruments 0 6
Foreign exchange contracts not designated as hedging instruments 79 69
Foreign exchange contracts | Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Interest rate contracts designated as hedging instruments 5 0
Foreign exchange contracts not designated as hedging instruments 54 76
Equity contracts | Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Commodities contracts not designated as hedging instruments 20 0
Equity contracts | Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Commodities contracts not designated as hedging instruments 2 7
Commodities contracts | Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Derivative instruments not designated as hedging instruments, asset 29 62
Commodities contracts | Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Derivative credit and equity contracts not designated as hedging instruments, liability 27 60
Credit contracts | Accrued income and other assets    
Asset derivatives included in accrued income and other assets    
Derivative instruments not designated as hedging instruments, asset 2 0
Credit contracts | Accrued expenses and other liabilities    
Liability derivatives included in accrued expenses and other liabilities    
Derivative credit and equity contracts not designated as hedging instruments, liability 0 2
Derivatives designated as Hedging Instruments | Interest rate contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 45,634 38,017
Derivatives designated as Hedging Instruments | Foreign exchange contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 250 222
Derivatives not designated as Hedging Instruments | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 95,461 86,843
Derivatives not designated as Hedging Instruments | Interest rate contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 42,359 41,526
Derivatives not designated as Hedging Instruments | Foreign exchange contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 5,465 5,257
Derivatives not designated as Hedging Instruments | Equity contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 823 759
Derivatives not designated as Hedging Instruments | Commodities contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value 683 681
Derivatives not designated as Hedging Instruments | Credit contracts | Accrued income and other assets    
Derivatives, Fair Value [Line Items]    
Notional value $ 247 $ 381