Consolidated Statements of Equity and Partners' Capital - WES Operating - USD ($) $ in Thousands	Total	Occidental [Member]	Chipeta [Member]	Common Units [Member]	Common Units [Member] Occidental [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Chipeta [Member]	WES Operating [Member]	WES Operating [Member] Occidental [Member]	WES Operating [Member] WES [Member]	WES Operating [Member] Chipeta [Member]	WES Operating [Member] Common Units [Member]	WES Operating [Member] Common Units [Member] Occidental [Member]	WES Operating [Member] Common Units [Member] WES [Member]	WES Operating [Member] Noncontrolling Interest [Member]	WES Operating [Member] Noncontrolling Interest [Member] Chipeta [Member]
Balance at Dec. 31, 2021	$ 3,095,760			$ 2,966,955		$ 137,687		$ 3,092,666				$ 3,063,289			$ 29,377
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	317,670			301,934		8,953		318,408				315,772			2,636
Distributions to noncontrolling interest owners			$ (1,984)				$ (1,984)				$ (1,984)					$ (1,984)
Distributions to WES Operating unitholders	(134,749)			(131,786)				(140,217)				(140,217)
Contributions of equity-based compensation from related parties		$ 1,949			$ 1,949				$ 1,949	$ 5,663			$ 1,949	$ 5,663
Net contributions from (distributions to) related parties	409			409				409				409
Balance at Mar. 31, 2022	3,270,807			3,134,018		141,851		3,276,894				3,246,865			30,029
Balance at Dec. 31, 2022	3,108,115			2,969,604		136,406		3,120,107				3,092,012			28,095
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	208,341			198,959		4,696		208,548				208,013			535
Distributions to noncontrolling interest owners			$ (2,240)				$ (2,240)				$ (2,240)					$ (2,240)
Distributions to WES Operating unitholders	(196,569)			(192,039)				(213,513)				(213,513)
Contributions of equity-based compensation from related parties										$ 7,058				$ 7,058
Balance at Mar. 31, 2023	$ 3,101,564			$ 2,964,712		$ 134,591		$ 3,119,960				$ 3,093,570			$ 26,390