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Acquisitions, Divestitures and Other Transactions - Partners' Capital (Details) - Plains Oryx Permian Basin LLC - Joint Venture Transaction - USD ($) $ in Millions	12 Months Ended		15 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022
Business Acquisition [Line Items]
Partners' capital impact of business combination	$ (26)	$ 3,256
Noncontrolling Interests
Business Acquisition [Line Items]
Partners' capital impact of business combination	(16)	2,651
Partners’ Capital Excluding Noncontrolling Interests
Business Acquisition [Line Items]
Partners' capital impact of business combination	$ (10)	$ 605	$ 595
Oryx Midstream Holdings LLC | Noncontrolling Interests
Business Acquisition [Line Items]
Plains Oryx Permian Basin LLC joint venture formation			2,635
Oryx Midstream Holdings LLC
Business Acquisition [Line Items]
Partners' capital impact of business combination			$ 3,230

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