Related-Party Transactions - Summary of WES Related-Party Transactions Tables (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Consolidated statements of operations [Abstract]
Revenues and other	[1]	$ 887,729	$ 733,982
Equity income, net – related parties		32,819	39,021
Cost of product		46,079	51,459
Operation and maintenance		194,939	174,239
General and administrative		67,839	51,117
Total operating expenses	[2]	480,791	480,673
Consolidated balance sheets [Abstract]
Accounts receivable, net		720,351		$ 666,637
Other current assets		50,750		52,986
Equity investments		546,078		904,535
Other assets	[3]	249,479		233,455
Total assets	[4]	12,265,470		12,471,607
Accounts and imbalance payables		377,499		362,451
Accrued liabilities		173,721		262,572
Other liabilities		526,508		480,212
Total liabilities	[5]	8,889,179		9,442,477
Consolidated statements of cash flows [Abstract]
Distributions from equity-investment earnings – related parties		29,304	39,609
Contributions to equity investments – related parties		0	(110)
Distributions from equity investments in excess of cumulative earnings – related parties		19,033	12,366
Distributions to Partnership unitholders	[6]	(223,438)	(196,569)
Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		781,262	647,867
Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		66,740	46,810
Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		39,292	39,025
Related Parties [Member]
Consolidated statements of operations [Abstract]
Revenues and other		499,809	448,785
Cost of product		(27,412)	(3,947)
Operation and maintenance		1,439	747
General and administrative		0	67
Total operating expenses		(25,973)	(3,133)
Consolidated balance sheets [Abstract]
Accounts receivable, net		389,721		358,141
Other current assets		3,277		1,260
Other assets		43,534		43,216
Total assets		982,610		1,307,152
Accounts and imbalance payables		38,739		38,541
Accrued liabilities		5,009		4,979
Other liabilities		362,604		335,320
Total liabilities		406,352		$ 378,840
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(111,689)	(99,671)
Related Parties [Member] | WES Operating [Member]
Consolidated statements of cash flows [Abstract]
Distributions to Partnership unitholders		(4,591)	(4,271)
Related Parties [Member] | Service Revenues - Fee Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		489,729	423,501
Related Parties [Member] | Service Revenues - Product Based [Member]
Consolidated statements of operations [Abstract]
Revenues and other		14,057	8,116
Related Parties [Member] | Product Sales [Member]
Consolidated statements of operations [Abstract]
Revenues and other		$ (3,977)	$ 17,168

[1] Total revenues and other includes related-party amounts of $499.8 million and $448.8 million for the three months ended March 31, 2024 and 2023, respectively. See Note 6.

[2] Total operating expenses includes related-party amounts of $(26.0) million and $(3.1) million for the three months ended March 31, 2024 and 2023, 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 March 31, 2024, and December 31, 2023, respectively. Other assets also includes $107.1 million and $96.3 million of materials and supplies inventory as of March 31, 2024, and December 31, 2023, respectively.

[4] Total assets includes related-party amounts of $982.6 million and $1.3 billion as of March 31, 2024, and December 31, 2023, respectively, which includes related-party Accounts receivable, net of $389.7 million and $358.1 million as of March 31, 2024, and December 31, 2023, respectively. See Note 6.

[5] Total liabilities includes related-party amounts of $406.4 million and $378.8 million as of March 31, 2024, and December 31, 2023, respectively. See Note 6.

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