Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Consolidated statements of operations [Abstract]
General and administrative		$ 271,526	$ 232,632	$ 194,017
Consolidated balance sheets [Abstract]
Other current assets		54,888	52,986
Other assets	[1]	387,028	233,455
Accounts and imbalance payables		312,945	362,451
Accrued liabilities		329,398	262,572
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[2]	(1,246,069)	(978,430)	(735,755)
Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		350	284	2,338
Consolidated balance sheets [Abstract]
Other current assets		6,671	1,260
Other assets		41,641	43,216
Accounts and imbalance payables		20,609	38,541
Accrued liabilities		4,717	4,979
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders		(604,512)	(494,127)	(372,468)
WES Operating [Member]
Consolidated statements of operations [Abstract]
General and administrative		269,651	229,689	191,361
Consolidated balance sheets [Abstract]
Other current assets		53,775	50,468
Other assets	[3]	383,808	231,644
Accounts and imbalance payables		339,108	392,752
Accrued liabilities		248,589	203,461
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders	[4]	(1,272,152)	(1,142,217)	(1,244,533)
WES Operating [Member] | Related Parties [Member]
Consolidated statements of operations [Abstract]
General and administrative		4,130	3,554	5,373
Consolidated balance sheets [Abstract]
Other current assets		6,263	1,235
Other assets		38,421	41,405
Accounts and imbalance payables		46,773	69,472
Accrued liabilities		4,717	4,662
Consolidated statements of cash flows [Abstract]
Distributions to WES Operating unitholders		$ (1,272,152)	$ (1,142,217)	$ (1,244,533)

[1] Other assets includes $5.5 million and $5.7 million of NGLs line-fill inventory as of December 31, 2024 and 2023, respectively. Other assets also includes $110.3 million and $96.3 million of materials and supplies inventory as of December 31, 2024 and 2023, respectively

[2] Includes related-party amounts. See Note 6.

[3] Other assets includes $5.5 million and $5.7 million of NGLs line-fill inventory as of December 31, 2024 and 2023, respectively. Other assets also includes $110.3 million and $96.3 million of materials and supplies inventory as of December 31, 2024 and 2023, respectively.

[4] Includes related-party amounts. See Note 6.