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Derivative Assets And Liabilities Table - Partnership's Derivative Assets and Liabilities Amount of Gain (Loss) Recognized (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Amount of Gain/(Loss) Recognized in Income on Derivatives $ (56) $ 15 $ (122) $ (209)
Gains (losses) on interest rate derivatives 1 55 72 (277)
Commodity Derivatives [Member]        
Amount of Gain/(Loss) Recognized in Income on Derivatives (71) (44) (206) 53
Commodity Derivatives - Trading [Member]        
Amount of Gain/(Loss) Recognized in Income on Derivatives $ 14 $ 4 $ 12 $ 15