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Derivative Instruments and Hedging Activities - Impact to Statement of Operations (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]            
Interest Rate Contracts (Interest expense) $ 6 $ 14 $ 0 $ 11    
Interest rate contracts | Interest Expense            
Derivative Instruments, Gain (Loss) [Line Items]            
Interest Rate Contracts (Interest expense) 36   (11)   $ 77 $ 36
Commodity Contracts            
Derivative Instruments, Gain (Loss) [Line Items]            
Commodity Contracts (Mark-to-market economic hedging activities) $ (49)   $ (28)   $ (174) $ (50)