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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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Unrealized mark-to-market results        
Reversal of previously recognized unrealized (gains) on settled positions related to economic hedges $ (151) $ (197) $ (997) $ (605)
Reversal of acquired loss/(gain) positions related to economic hedges 35 48 10 (12)
Net unrealized gains/(losses) on open positions related to economic hedges 180 868 (893) 3,613
Total unrealized mark-to-market gains/(losses) for economic hedging activities 64 719 (1,880) 2,996
Reversal of previously recognized unrealized losses on settled positions related to trading activity 10 8 11 9
Net unrealized gains/(losses) on open positions related to trading activity 3 (10) 14 (25)
Total unrealized mark-to-market gains/(losses) for trading activity 13 (2) 25 (16)
Total unrealized gains/(losses) - commodities and foreign exchange 77 717 (1,855) 2,980
Credit Risk Related Contingent Features        
Collateral due on net liability position that has not been called by a certain marginable agreement counterparty 91   91  
Additional collateral required 15   15  
Adequate Assurance Clauses        
Credit Risk Related Contingent Features        
Derivative net liability position, collateral required for contracts with credit rating contingent feature 743   743  
Commodities | Operating revenues        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange 88 (150) 191 (297)
Commodities | Cost of operations        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange 5 858 (2,032) 3,272
Foreign exchange | Cost of operations        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange (16) 9 (14) 5
Commodities and foreign exchange        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange 77 717 (1,855) 2,980
Consumer financing program        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange (3) 0 (3) 0
Interest rate contracts        
Unrealized mark-to-market results        
Total unrealized gains/(losses) - commodities and foreign exchange $ 29 $ 0 $ 24 $ 0