Consolidated Statements of Cash Flows - WES Operating (Parenthetical) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Capital expenditures	[1]	$ 313,674	$ 423,602	$ 1,189,254
Finance lease payments	[2]	6,513	14,207	508
WES Operating [Member]
Capital expenditures	[3]	313,674	423,602	1,189,254
Finance lease payments	[4]	6,513	14,207	508
Related Parties [Member]
Capital expenditures		2,000	0	425
Finance lease payments		0	6,382	508
Related Parties [Member] | WES Operating [Member]
Capital expenditures		$ 2,000		$ 400
Finance lease payments			$ 6,400

[1] Includes purchases from related parties of $2.0 million and $0.4 million for the years ended December 31, 2021 and 2019, respectively. See Note 6.

[2] For the year ended December 31, 2020, includes related-party payments of $6.4 million.

[3] Includes purchases from related parties of $2.0 million and $0.4 million for the years ended December 31, 2021 and 2019, respectively. See Note 6.

[4] For the year ended December 31, 2020, includes related-party payments of $6.4 million.