Derivatives and Risk Management Activities - Preferred Distribution Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jan. 31, 2023
Derivatives and Risk Management Activities
Gain/(loss) recognized	$ 58	$ (189)
Preferred Distribution Rate Reset Option | Not Designated as Hedging Instrument [Member]
Derivatives and Risk Management Activities
Derivative liability		$ 189	$ 131
Derivative liability [Extensible Enumeration]		Other long-term liabilities and deferred credits
Preferred Distribution Rate Reset Option | Not Designated as Hedging Instrument [Member] | Other Income/(Expense), Net
Derivatives and Risk Management Activities
Gain/(loss) recognized	$ 58	$ (189)