Consolidated Balance Sheets - WES Operating (Parenthetical) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Materials and supplies inventory		$ 128,900	$ 96,300
Total assets	[1]	12,981,224	12,471,607
Accounts receivable, net		671,635	666,637
Total liabilities	[2]	9,603,707	9,442,477
Related Parties [Member]
Total assets		972,923	1,307,152
Accounts receivable, net		393,740	358,141
Total liabilities		534,518	378,840
Natural-Gas Liquids [Member]
NGLs line-fill inventory		3,900	5,700
WES Operating [Member]
Materials and supplies inventory		128,900	96,300
Total assets	[3]	12,973,404	12,462,653
Accounts receivable, net		674,798	666,615
Total liabilities	[4]	9,548,457	9,410,299
WES Operating [Member] | Related Parties [Member]
Total assets		972,500	1,300,000
Accounts receivable, net		396,943	358,141
Total liabilities		534,200	409,500
WES Operating [Member] | Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 3,900	$ 5,700

[1] Total assets includes related-party amounts of $972.9 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related-party Accounts receivable, net of $393.7 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6.

[2] Total liabilities includes related-party amounts of $534.5 million and $378.8 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6.

[3] Total assets includes related-party amounts of $972.5 million and $1.3 billion as of September 30, 2024, and December 31, 2023, respectively, which includes related-party Accounts receivable, net of $396.9 million and $358.1 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6.

[4] Total liabilities includes related-party amounts of $534.2 million and $409.5 million as of September 30, 2024, and December 31, 2023, respectively. See Note 6.