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Fair Value Hierarchy - Derivatives, Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Derivative [Line Items]        
Net realized and unrealized gains (losses) on level 3 derivatives $ (284) $ 52 $ 201 $ 22
Net realized gains (losses) on derivative assets and liabilities (264) (87) (88) (235)
Net unrealized gains/(losses) (20) 139 289 257
Market making        
Derivative [Line Items]        
Net realized and unrealized gains (losses) on level 3 derivatives (246) 59 236 12
Other principal transactions        
Derivative [Line Items]        
Net realized and unrealized gains (losses) on level 3 derivatives $ (38) $ (7) $ (35) $ 10