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Derivative Financial Instruments - Gains and Losses on Derivative Instruments Held For Trading Purpose (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives $ (1,302) $ 3,509 $ (1,941)
Trading revenue | Interest rate contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives (111) 315 (11)
Trading revenue | Foreign exchange contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 316 212 274
Trading revenue | Equity contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives (1,760) 2,581 (2,432)
Trading revenue | Precious metals contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 223 271 145
Trading revenue | Credit contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives $ 30 $ 130 $ 83