Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 876,419	$ 719,131	$ 1,634,716	$ 1,394,105
Equity income, net – related parties		48,464	58,666	98,071	110,831
Cost of product		148,556	78,044	221,404	167,013
Operation and maintenance		168,153	153,028	297,129	293,360
General and administrative		47,848	44,448	96,450	89,564
Operating expenses	[2]	526,345	444,074	929,795	878,294
Consolidated balance sheets [Abstract]
Accounts receivable, net		716,343		716,343		$ 436,513
Other current assets		49,666		49,666		46,252
Equity investments		1,148,487		1,148,487		1,167,187
Other assets	[3]	165,671		165,671		158,696
Total assets	[4]	11,388,859		11,388,859		11,273,079
Accounts and imbalance payables		492,979		492,979		326,061
Accrued liabilities		217,817		217,817		263,249
Other liabilities		355,163		355,163		325,806
Total liabilities	[5]	8,083,856		8,083,856		8,177,319
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties				96,404	110,763
Capital expenditures	[6]			(191,357)	(139,928)
Contributions to equity investments – related parties				(5,040)	(3,508)
Distributions from equity investments in excess of cumulative earnings – related parties				25,407	21,373
Distributions to Partnership unitholders	[7]			(340,946)	(264,234)
Net contributions from (distributions to) related parties				784	4,508
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		655,952	618,985	1,287,550	1,191,260
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		70,498	27,803	111,365	59,455
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		149,736	72,256	235,325	143,061
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		456,781	415,443	885,490	793,694
Cost of product		(12,148)	18,937	(31,691)	36,584
Operation and maintenance		702	2,915	643	21,037
General and administrative		233	7,102	2,208	11,195
Operating expenses		(11,213)	28,954	(28,840)	68,816
Consolidated balance sheets [Abstract]
Accounts receivable, net		322,715		322,715		180,205
Other current assets		14,591		14,591		12,490
Other assets		45,921		45,921		45,494
Total assets		1,531,714		1,531,714		1,405,376
Accounts and imbalance payables		47,175		47,175		49,242
Accrued liabilities		4,136		4,136		13,914
Other liabilities		237,008		237,008		207,365
Total liabilities		288,319		288,319		$ 270,521
Consolidated statements of cash flows [Abstract]
Capital expenditures				0	(2,000)
Distributions to Partnership unitholders				(165,633)	(130,518)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(8,812)	(5,292)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		428,631	402,684	843,530	770,159
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		21,808	3,658	24,051	8,163
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 6,342	$ 9,101	$ 17,909	$ 15,372

[1] Total revenues and other includes related-party amounts of $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively, and $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, and $29.0 million and $68.8 million for the three and six months ended June 30, 2021, respectively. See Note 6.

[3] Other assets includes $12.2 million and $9.8 million of NGLs line-fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively.

[4] Total assets includes related-party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related-party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6.

[5] Total liabilities includes related-party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6.

[6] Includes purchases from related parties of $2.0 million for the six months ended June 30, 2021. See Note 6.

[7] See Note 6.