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, 2020		$ 2,895,212				$ 2,778,339		$ (17,208)	$ 134,081
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)		191,235				181,798		3,993	5,444
Distributions to noncontrolling interest owners				$ (276)	$ (2,551)					$ (276)	$ (2,551)
Distributions to Partnership unitholders		(131,265)				(128,447)		(2,818)
Unit repurchases	[1]	(16,241)				(16,241)
Contributions of equity-based compensation from related parties			$ 3,210				$ 3,210
Equity-based compensation expense		3,524				3,524
Net contributions from (distributions to) related parties		1,627				1,627
Other		(2,355)				(2,355)
Balance at Mar. 31, 2021		2,942,120				2,821,455		(16,033)	136,698
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)		317,670				301,934		6,783	8,953
Distributions to noncontrolling interest owners				$ (1,984)	$ (2,805)					$ (1,984)	$ (2,805)
Distributions to Partnership unitholders		(134,749)				(131,786)		(2,963)
Unit repurchases	[1]	(5,149)				(5,149)
Contributions of equity-based compensation from related parties			$ 1,949				$ 1,949
Equity-based compensation expense		5,794				5,794
Net contributions from (distributions to) related parties		409				409
Other		(6,088)				(6,088)
Balance at Mar. 31, 2022		$ 3,270,807				$ 3,134,018		$ (5,062)	$ 141,851

[1] See Note 4.