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Derivatives and Risk Management Activities - Fair Value (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2024	Dec. 31, 2023
Recurring Fair Value Measurements
Gain on embedded derivative, net	$ 58
Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		$ (81)	$ 55
Level 1 \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		(21)	9
Level 2 \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		(60)	46
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
Commodity derivatives \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		(88)
Commodity derivatives \| Level 1 \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		(21)	9
Commodity derivatives \| Level 2 \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		(67)	(9)
Interest rate derivatives \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		7	55
Interest rate derivatives \| Level 2 \| Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)		$ 7	$ 55
Preferred Distribution Rate Reset Option \| Derivatives Not Designated as a Hedge \| Other Income/(Expense), Net
Recurring Fair Value Measurements
Gain on embedded derivative, net	$ 58