Derivatives and Risk Management Activities - Net Unrealized Gain/(Loss) Recognized in AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Derivative assets and liabilities
Proceeds from settlement of interest rate hedging instruments			$ (57)	$ (80)
Other long-term assets, net
Derivative assets and liabilities
Net fair value of interest rate hedges	$ 7		7		$ 4
Other current assets
Derivative assets and liabilities
Net fair value of interest rate hedges					$ 51
Interest Rate Swaps Terminated | Cash Flow Hedge
Derivative assets and liabilities
Notional amount of derivatives	100		100
Proceeds from settlement of interest rate hedging instruments			57
Interest rate derivatives
Derivative assets and liabilities
Interest rate derivatives, net	(9)	$ 38	9	$ 40
AOCI Cash Flow Hedge
Derivative assets and liabilities
Net gain (loss) deferred in AOCI	(66)		(66)
AOCI Cash Flow Hedge | Interest Rate Swaps Terminated | Cash Flow Hedge
Derivative assets and liabilities
Net gain (loss) deferred in AOCI	$ 57		$ 57