Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 738,273	$ 876,419	$ 1,472,255	$ 1,634,716
Equity income, net – related parties		42,324	48,464	81,345	98,071
Cost of product		44,746	148,556	96,205	221,404
Operation and maintenance		183,431	168,153	357,670	297,129
General and administrative		53,405	47,848	104,522	96,450
Total operating expenses	[2]	443,855	526,345	924,528	929,795
Consolidated balance sheets [Abstract]
Accounts receivable, net		554,222		554,222		$ 554,263
Other current assets		29,028		29,028		59,506
Equity investments		920,123		920,123		944,696
Other assets	[3]	198,630		198,630		167,049
Total assets	[4]	11,218,950		11,218,950		11,271,628
Accounts and imbalance payables		359,298		359,298		360,562
Accrued liabilities		223,887		223,887		254,640
Other liabilities		433,775		433,775		385,629
Total liabilities	[5]	8,196,787		8,196,787		8,163,513
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties				82,871	96,404
Contributions to equity investments – related parties				(132)	(5,040)
Distributions from equity investments in excess of cumulative earnings – related parties				23,179	25,407
Distributions to Partnership unitholders	[6]			(533,556)	(340,946)
Net contributions from (distributions to) related parties				0	784
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		661,506	655,952	1,309,373	1,287,550
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		46,956	70,498	93,766	111,365
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		29,659	149,736	68,684	235,325
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		441,583	456,781	890,368	885,490
Cost of product		(15,184)	(12,148)	(19,131)	(31,691)
Operation and maintenance		903	702	1,650	643
General and administrative		217	233	284	2,208
Total operating expenses		(14,064)	(11,213)	(17,197)	(28,840)
Consolidated balance sheets [Abstract]
Accounts receivable, net		346,688		346,688		313,937
Other current assets		3,755		3,755		1,578
Other assets		38,623		38,623		29,058
Total assets		1,309,189		1,309,189		1,289,269
Accounts and imbalance payables		33,632		33,632		32,150
Accrued liabilities		2,350		2,350		11,756
Other liabilities		310,131		310,131		268,399
Total liabilities		346,113		346,113		$ 312,305
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(270,308)	(173,126)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders				(11,131)	(8,812)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		423,330	428,631	846,831	843,530
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		6,642	21,808	14,758	24,051
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 11,611	$ 6,342	$ 28,779	$ 17,909

[1] Total revenues and other includes related-party amounts of $441.6 million and $890.4 million for the three and six months ended June 30, 2023, respectively, and $456.8 million and $885.5 million for the three and six months ended June 30, 2022, respectively. See Note 5.

[2] Total operating expenses includes related-party amounts of $(14.1) million and $(17.2) million for the three and six months ended June 30, 2023, respectively, and $(11.2) million and $(28.8) million for the three and six months ended June 30, 2022, respectively, all primarily related to changes in imbalance positions. See Note 5.

[3] Other assets includes $3.7 million and $6.5 million of NGLs line-fill inventory as of June 30, 2023, and December 31, 2022, respectively. Other assets also includes $78.4 million and $60.4 million of materials and supplies inventory as of June 30, 2023, and December 31, 2022, respectively.

[4] Total assets includes related-party amounts of $1.3 billion as of June 30, 2023, and December 31, 2022, which includes related-party Accounts receivable, net of $346.7 million and $313.9 million as of June 30, 2023, and December 31, 2022, respectively. See Note 5.

[5] Total liabilities includes related-party amounts of $346.1 million and $312.3 million as of June 30, 2023, and December 31, 2022, respectively. See Note 5.

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