Derivatives and Risk Management Activities - Net Unrealized Gain/(Loss) Recognized in AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Other current assets
Derivative assets and liabilities
Net fair value of interest rate hedges	$ 33		$ 33
Other long-term assets, net
Derivative assets and liabilities
Net fair value of interest rate hedges					$ 27
Interest rate derivatives
Derivative assets and liabilities
Interest rate derivatives, net	7	$ 5	6	$ 18
Derivative Instruments
Derivative assets and liabilities
Net gain (loss) deferred in AOCI	$ (36)		(36)
Interest rate derivatives, net			$ 6	$ 18