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Derivative Assets And Liabilities Table - Fair Value of Derivative Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Total derivatives assets $ 822 $ 688
Total derivatives liabilities (773) (549)
Designated as Hedging Instrument [Member]    
Total derivatives assets 35 87
Total derivatives liabilities (12) (7)
Not Designated as Hedging Instrument [Member]    
Total derivatives assets 787 601
Total derivatives liabilities (761) (542)
Commodity Derivatives [Member] | Not Designated as Hedging Instrument [Member]    
Total derivatives assets 69 95
Total derivatives liabilities (71) (108)
Commodity Derivatives (Margin Deposits) [Member] | Designated as Hedging Instrument [Member]    
Total derivatives assets 35 87
Total derivatives liabilities (12) (7)
Commodity Derivatives (Margin Deposits) [Member] | Not Designated as Hedging Instrument [Member]    
Total derivatives assets 705 506
Total derivatives liabilities (667) (411)
Interest Rate Derivatives [Member] | Not Designated as Hedging Instrument [Member]    
Total derivatives assets 13 0
Total derivatives liabilities $ (23) $ (23)