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Accounting for Derivative Instruments and Hedging Activities - Pre-tax Effects of Economic Hedges Not Designated as Cash Flow Hedges (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Unrealized mark-to-market results    
Reversal of previously recognized unrealized (gains) on settled positions related to economic hedges $ (846) $ (408)
Reversal of acquired (gain) positions related to economic hedges (25) (60)
Net unrealized (losses)/gains on open positions related to economic hedges (1,073) 2,745
Total unrealized mark-to-market (losses)/gains for economic hedging activities (1,944) 2,277
Reversal of previously recognized unrealized losses on settled positions related to trading activity 1 1
Net unrealized gains/(losses) on open positions related to trading activity 11 (15)
Total unrealized mark-to-market gains/(losses) for trading activity 12 (14)
Total unrealized (losses)/gains - commodities and foreign exchange (1,932) 2,263
Credit Risk Related Contingent Features    
Collateral due on net liability position that has not been called by a certain marginable agreement counterparty 124  
Additional collateral required 33  
Adequate Assurance Clauses    
Credit Risk Related Contingent Features    
Derivative net liability position, collateral required for contracts with credit rating contingent feature 612  
Commodities | Operating revenues    
Unrealized mark-to-market results    
Total unrealized (losses)/gains - commodities and foreign exchange 103 (147)
Commodities | Cost of operations    
Unrealized mark-to-market results    
Total unrealized (losses)/gains - commodities and foreign exchange (2,037) 2,414
Foreign exchange | Cost of operations    
Unrealized mark-to-market results    
Total unrealized (losses)/gains - commodities and foreign exchange 2 (4)
commodities and foreign exchange    
Unrealized mark-to-market results    
Total unrealized (losses)/gains - commodities and foreign exchange (1,932) 2,263
Interest rate contracts    
Unrealized mark-to-market results    
Total unrealized (losses)/gains - commodities and foreign exchange $ (5) $ 0