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Fair Value Hierarchy - Loans, Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Fair value option gains/(losses) $ 11,633 $ (3,544) $ (3,161)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest income, Other principal transactions Interest income, Other principal transactions  
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest income, Other principal transactions Interest income, Other principal transactions  
Other principal transactions      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Fair value option gains/(losses) $ (367) $ 216  
Level 3      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Net realized gains/(losses) (47) 66  
Level 3 | Loans Non-trading      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Net realized gains/(losses) 82 99  
Net unrealized gains/(losses) (129) (33)  
Level 3 | Other principal transactions      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Net realized gains/(losses) (78) 42  
Level 3 | Interest income      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Net realized gains/(losses) $ 31 $ 24