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Derivatives and Risk Management Activities - Fair Value (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Level 3
Rollforward of Level 3 Net Asset/(Liability)
Beginning Balance	$ (147)	$ (13)	$ (2)	$ (29)
Net gains/(losses) for the period included in earnings	(49)	5	(196)	14
Settlements		1	2	8
Ending Balance	(196)	(7)	(196)	(7)
Change in unrealized gains/(losses) included in earnings relating to Level 3 derivatives still held at the end of the period	(49)	$ 5	(196)	$ 14
Recurring Fair Value Measures
Recurring Fair Value Measurements
Total net derivative asset/(liability)	149		149		$ (78)
Recurring Fair Value Measures | Commodity derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	232		232		(143)
Recurring Fair Value Measures | Interest rate derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	113		113		65
Recurring Fair Value Measures | Preferred Distribution Rate Reset Option
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(196)		(196)
Recurring Fair Value Measures | Level 1
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(29)		(29)		(17)
Recurring Fair Value Measures | Level 1 | Commodity derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(29)		(29)		(17)
Recurring Fair Value Measures | Level 2
Recurring Fair Value Measurements
Total net derivative asset/(liability)	374		374		(59)
Recurring Fair Value Measures | Level 2 | Commodity derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	261		261		(124)
Recurring Fair Value Measures | Level 2 | Interest rate derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	113		113		65
Recurring Fair Value Measures | Level 3
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(196)		(196)		(2)
Recurring Fair Value Measures | Level 3 | Commodity derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)					$ (2)
Recurring Fair Value Measures | Level 3 | Preferred Distribution Rate Reset Option
Recurring Fair Value Measurements
Total net derivative asset/(liability)	$ (196)		$ (196)

X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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Amount of unrealized gain (loss) recognized in income for derivative asset (liability) after deduction of derivative liability (asset), measured at fair value using unobservable input (level 3) and still held.

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Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3).

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Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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