Related-Party Transactions - Summary of WES 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]
Total revenues and other	[1]	$ 3,605,223	$ 3,106,476	$ 3,251,721
Equity income, net – related parties		112,385	152,959	183,483
Cost of product		172,251	164,598	420,900
Operation and maintenance		880,568	762,530	654,566
General and administrative		271,526	232,632	194,017
Total operating expenses	[2]	2,043,647	1,869,770	1,950,992
(Gain) loss on disposition of assets and other net		296,771	(10,102)	103,676
Consolidated balance sheets [Abstract]
Accounts receivable, net		701,838	666,637
Other current assets		54,888	52,986
Equity investments		541,435	904,535	944,696
Other assets	[3]	387,028	233,455
Total assets	[4]	13,144,785	12,471,607
Accounts and imbalance payables		312,945	362,451
Accrued liabilities		329,398	262,572
Other liabilities		751,400	480,212
Total liabilities	[5]	9,769,615	9,442,477
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties		111,386	155,169	186,153
Capital expenditures	[6]	(833,856)	(735,080)	(487,228)
Contributions to equity investments – related parties		(9,690)	(1,153)	(9,632)
Distributions from equity investments in excess of cumulative earnings – related parties		30,850	39,104	63,897
Distributions to Partnership unitholders	[6]	(1,246,069)	(978,430)	(735,755)
Net contributions from (distributions to) related parties		0	0	1,423
Unit repurchases from Occidental	[6]	0	(134,602)	(487,590)
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		3,248,262	2,768,757	2,602,053
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		215,776	191,727	249,692
Product Sales [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		140,100	145,024	399,023
Related Parties [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		2,161,508	1,834,094	1,795,233
Cost of product		(67,414)	(72,903)	(25,447)
Operation and maintenance		10,580	4,618	5,081
General and administrative		350	284	2,338
Total operating expenses		(56,484)	(68,001)	(18,028)
(Gain) loss on disposition of assets and other net		0	0	(1,756)
Consolidated balance sheets [Abstract]
Accounts receivable, net		401,315	358,141
Other current assets		6,671	1,260
Other assets		41,641	43,216
Total assets		991,062	1,307,152
Accounts and imbalance payables		20,609	38,541
Accrued liabilities		4,717	4,979
Other liabilities		504,415	335,320
Total liabilities		529,741	378,840
Consolidated statements of cash flows [Abstract]
Capital expenditures		0	0	(470)
Proceeds from the sale of assets to related parties		0	0	200
Distributions to Partnership unitholders		(604,512)	(494,127)	(372,468)
Unit repurchases from Occidental		0	(127,500)	(252,500)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(25,450)	(22,850)	(24,898)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		2,099,116	1,773,914	1,674,959
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		56,688	16,497	56,907
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Total revenues and other		$ 5,704	$ 43,683	$ 63,367

[1] Total revenues and other includes related-party amounts of $2.2 billion, $1.8 billion, and $1.8 billion for the years ended December 31, 2024, 2023, and 2022, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $(56.5) million, $(68.0) million, and $(18.0) million for the years ended December 31, 2024, 2023, and 2022, respectively, all primarily related to changes in imbalance positions. 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] Total assets includes related-party amounts of $991.1 million and $1.3 billion as of December 31, 2024 and 2023, respectively, which includes related-party Accounts receivable, net of $401.3 million and $358.1 million as of December 31, 2024 and 2023, respectively. See Note 6.

[5] Total liabilities includes related-party amounts of $529.7 million and $378.8 million as of December 31, 2024 and 2023, respectively. See Note 6.

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