Consolidated Statements of Equity and Partners' Capital - USD ($) $ in Thousands		Total	Occidental [Member]	Chipeta [Member]	WES Operating [Member]	Common Units [Member]	Common Units [Member] Occidental [Member]	General Partner [Member]	Noncontrolling Interests [Member]	Noncontrolling Interests [Member] Chipeta [Member]	Noncontrolling Interests [Member] WES Operating [Member]
Balance at Dec. 31, 2019		$ 3,345,293				$ 3,209,947		$ (14,224)	$ 149,570
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		516,852				515,908		11,104	(10,160)
Distributions to noncontrolling interest owners				$ (8,644)	$ (15,434)					$ (8,644)	$ (15,434)
Distributions to Partnership unitholders		(695,834)				(681,746)		(14,088)
Unit exchange with Occidental	[1]	(261,878)				(256,640)			(5,238)
Unit repurchases	[2]	(32,535)				(32,535)
Acquisitions from related parties		0				(3,987)			3,987
Contributions of equity-based compensation from related parties			$ 14,604				$ 14,604
Equity-based compensation expense		7,857				7,857
Net contributions from (distributions to) related parties	[3]	24,466				4,466			20,000
Other		465				465
Balance at Dec. 31, 2020		2,895,212				2,778,339		(17,208)	134,081
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		943,999				896,477		19,815	27,707
Distributions to noncontrolling interest owners				(9,117)	(14,984)					(9,117)	(14,984)
Distributions to Partnership unitholders		(533,758)				(522,269)		(11,489)
Unit repurchases	[2]	(217,465)				(217,465)
Contributions of equity-based compensation from related parties			10,087				10,087
Equity-based compensation expense		17,589				17,589
Net contributions from (distributions to) related parties		8,533				8,533
Other		(4,336)				(4,336)
Balance at Dec. 31, 2021		3,095,760				2,966,955		(8,882)	137,687
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		1,251,456				1,189,562		27,541	34,353
Distributions to noncontrolling interest owners				$ (10,736)	$ (24,898)					$ (10,736)	$ (24,898)
Distributions to Partnership unitholders		(735,755)				(719,201)		(16,554)
Unit repurchases	[2]	(487,590)				(487,590)
Contributions of equity-based compensation from related parties			$ 2,277				$ 2,277
Equity-based compensation expense		25,506				25,506
Net contributions from (distributions to) related parties		1,423				1,423
Other		(9,328)				(9,328)
Balance at Dec. 31, 2022		$ 3,108,115				$ 2,969,604		$ 2,105	$ 136,406

[1] See Note 6.

[2] See Note 5.

[3] Includes a one-time cash contribution Occidental made to WES Operating in January 2020 for anticipated transition costs required to establish stand-alone human resources and information technology functions.