Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 758,297	$ 674,974
Equity income, net – related parties		49,607	52,165
Cost of product		72,848	88,969
Operation and maintenance		128,976	140,332
General and administrative		48,602	45,116
Operating expenses	[2]	403,450	434,220
Consolidated balance sheets [Abstract]
Accounts receivable, net		601,647		$ 436,513
Other current assets		56,397		46,252
Equity investments		1,163,069		1,167,187
Other assets	[3]	159,707		158,696
Total assets	[4]	11,445,873		11,273,079
Accounts and imbalance payables		395,893		326,061
Accrued liabilities		160,247		263,249
Other liabilities		338,446		325,806
Total liabilities	[5]	8,175,066		8,177,319
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties		45,870	49,048
Capital expenditures	[6]	(83,971)	(61,783)
Contributions to equity investments – related parties		(2,070)	(86)
Distributions from equity investments in excess of cumulative earnings – related parties		9,925	12,141
Distributions to Partnership unitholders	[7]	(134,749)	(131,265)
Net contributions from (distributions to) related parties		409	1,627
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		631,598	572,275
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		40,867	31,652
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		85,589	70,805
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		428,709	378,251
Cost of product		(19,543)	17,647
Operation and maintenance		(59)	18,122
General and administrative		1,975	4,093
Operating expenses		(17,627)	39,862
Consolidated balance sheets [Abstract]
Accounts receivable, net		274,222		180,205
Other current assets		28,847		12,490
Other assets		46,531		45,494
Total assets		1,512,669		1,405,376
Accounts and imbalance payables		47,281		49,242
Accrued liabilities		4,476		13,914
Other liabilities		223,972		207,365
Total liabilities		275,729		$ 270,521
Consolidated statements of cash flows [Abstract]
Capital expenditures		0	(2,000)
Distributions to Partnership unitholders		(65,492)	(66,642)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(2,805)	(2,551)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		414,899	367,475
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		2,243	4,505
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ 11,567	$ 6,271

[1] Total revenues and other includes related-party amounts of $428.7 million and $378.3 million for the three months ended March 31, 2022 and 2021, respectively. See Note 5.

[2] Total operating expenses includes related-party amounts of $(17.6) million and $39.9 million for the three months ended March 31, 2022 and 2021, respectively. See Note 5.

[3] Other assets includes $14.6 million and $9.8 million of NGLs line-fill inventory as of March 31, 2022, and December 31, 2021, respectively. Other assets also includes $51.9 million and $56.2 million of materials and supplies inventory as of March 31, 2022, and December 31, 2021, respectively.

[4] Total assets includes related-party amounts of $1.5 billion and $1.4 billion as of March 31, 2022, and December 31, 2021, respectively, which includes related-party Accounts receivable, net of $274.2 million and $180.2 million as of March 31, 2022, and December 31, 2021, respectively. See Note 5.

[5] Total liabilities includes related-party amounts of $275.7 million and $270.5 million as of March 31, 2022, and December 31, 2021, respectively. See Note 5.

[6] Includes purchases from related parties of $2.0 million for the three months ended March 31, 2021. See Note 5.

[7] See Note 5.