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Derivatives and Risk Management Activities - Fair Value (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2024
Dec. 31, 2023
Recurring Fair Value Measurements      
Gain/(loss) recognized $ 58    
Preferred Distribution Rate Reset Option | Other Income/(Expense), Net | Derivatives Not Designated as a Hedge      
Recurring Fair Value Measurements      
Gain/(loss) recognized 58    
Level 3      
Rollforward of Level 3 Net Asset/(Liability)      
Beginning Balance (189)    
Net gains/(losses) for the period included in earnings 58    
Settlements 131    
Ending Balance 0    
Change in unrealized gains/(losses) included in earnings relating to Level 3 derivatives still held at the end of the period $ 0    
Recurring Fair Value Measures      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   $ (69) $ 55
Recurring Fair Value Measures | Commodity derivatives      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   (137)  
Recurring Fair Value Measures | Interest rate derivatives      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   68 55
Recurring Fair Value Measures | Level 1      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   (10) 9
Recurring Fair Value Measures | Level 1 | Commodity derivatives      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   (10) 9
Recurring Fair Value Measures | Level 2      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   (59) 46
Recurring Fair Value Measures | Level 2 | Commodity derivatives      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   (127) (9)
Recurring Fair Value Measures | Level 2 | Interest rate derivatives      
Recurring Fair Value Measurements      
Total net derivative asset/(liability)   $ 68 $ 55