(Deficit) Equity - Distributions to Noncontrolling Interests (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Zydeco Pipeline Company LLC (“Zydeco”)
Class of Stock [Line Items]
Distributions to noncontrolling interest (less than $1 million in 2021 for Zydeco)	$ 0	$ 1	$ 5	$ 4
Odyssey Pipeline L.L.C.
Class of Stock [Line Items]
Distributions to noncontrolling interest (less than $1 million in 2021 for Zydeco)		$ 11	$ 11	$ 13

Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

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