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Derivatives and Risk Management Activities - Net Unrealized Gain/(Loss) Recognized in AOCI (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Other current assets      
Derivative assets and liabilities      
Net fair value of interest rate hedges $ 55   $ 51
Other long-term assets, net      
Derivative assets and liabilities      
Net fair value of interest rate hedges 13   $ 4
AOCI Cash Flow Hedge      
Derivative assets and liabilities      
Net loss deferred in AOCI 66    
Interest rate derivatives      
Derivative assets and liabilities      
Interest rate derivatives, net $ 13 $ (5)