Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023
Materials and supplies inventory		$ 107,100	$ 96,300
Total assets	[1]	12,265,470	12,471,607
Accounts receivable, net		720,351	666,637
Total liabilities	[2]	8,889,179	9,442,477
Related Parties [Member]
Total assets		982,610	1,307,152
Accounts receivable, net		389,721	358,141
Total liabilities		406,352	378,840
Natural-Gas Liquids [Member]
NGLs line-fill inventory		5,500	5,700
WES Operating [Member]
Materials and supplies inventory		107,100	96,300
Total assets	[3]	12,272,536	12,462,653
Accounts receivable, net		738,487	666,615
Total liabilities	[4]	8,854,918	9,410,299
WES Operating [Member] | Related Parties [Member]
Total assets		997,300	1,300,000
Accounts receivable, net		407,881	358,141
Total liabilities		406,000	409,500
WES Operating [Member] | Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 5,500	$ 5,700

[1] 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.

[2] 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.

[3] Total assets includes related-party amounts of $997.3 million and $1.3 billion as of March 31, 2024, and December 31, 2023, respectively, which includes related-party Accounts receivable, net of $407.9 million and $358.1 million as of March 31, 2024, and December 31, 2023, respectively. See Note 6.

[4] Total liabilities includes related-party amounts of $406.0 million and $409.5 million as of March 31, 2024, and December 31, 2023, respectively. See Note 6.