Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2025		Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Consolidated statements of operations [Abstract]
Total revenues and other	[1]	$ 952,484		$ 883,362	$ 2,811,922	$ 2,676,720
Equity income, net – related parties		16,847		23,977	64,410	84,227
Cost of product		51,187		32,847	135,360	132,936
Operation and maintenance		212,385		231,066	663,528	649,324
General and administrative		64,119		64,726	197,051	195,498
Total operating expenses	[2]	525,301		511,940	1,572,442	1,515,384
Consolidated balance sheets [Abstract]
Accounts receivable, net		682,673			682,673		$ 701,838
Other current assets		57,090			57,090		54,888
Equity investments		510,628			510,628		541,435
Other assets		340,553			340,553		387,028
Total assets	[3]	12,125,352			12,125,352		13,144,785
Accounts and imbalance payables		297,029			297,029		312,945
Accrued liabilities		279,346			279,346		329,398
Other liabilities		810,209			810,209		751,400
Total liabilities	[4]	8,796,716			8,796,716		9,769,615
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties					69,217	83,091
Distributions from equity investments in excess of cumulative earnings – related parties					26,000	27,560
Distributions to Partnership unitholders	[5]				(1,051,503)	(905,155)
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		868,253		814,319	2,542,869	2,389,366
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		33,919		49,115	143,613	177,321
Product Sales [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		50,129		19,673	124,878	109,076
Related Parties [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		585,967	[1]	545,207	1,720,616	1,579,107
Cost of product		1,332		(14,638)	(21,710)	(46,685)
Operation and maintenance		1,833		2,523	5,314	8,665
General and administrative		0		45	210	299
Total operating expenses		3,165		(12,070)	(16,186)	(37,721)
Consolidated balance sheets [Abstract]
Accounts receivable, net		412,934			412,934		401,315
Other current assets		7,244			7,244		6,671
Other assets		34,631			34,631		41,641
Total assets		965,437			965,437		991,062
Accounts and imbalance payables		32,827			32,827		20,609
Accrued liabilities		4,734			4,734		4,717
Other liabilities		597,253			597,253		504,415
Total liabilities		634,814			634,814		$ 529,741
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders					(470,929)	(451,613)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders					(21,485)	(18,502)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		566,912		530,434	1,667,849	1,533,251
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		5,416		13,664	29,529	44,214
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		$ 13,639		$ 1,109	$ 23,238	$ 1,642

[1] Total revenues and other includes related-party amounts of $586.0 million and $1.7 billion for the three and nine months ended September 30, 2025, respectively, and $545.2 million and $1.6 billion for the three and nine months ended September 30, 2024, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $3.2 million and $(16.2) million for the three and nine months ended September 30, 2025, respectively, and $(12.1) million and $(37.7) million for the three and nine months ended September 30, 2024, respectively. See Note 6.

[3] Total assets includes related-party amounts of $965.4 million and $991.1 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts receivable, net of $412.9 million and $401.3 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.

[4] Total liabilities includes related-party amounts of $634.8 million and $529.7 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts and imbalance payable of $32.8 million and $20.6 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.

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