Consolidated Balance Sheets - WES Operating - USD ($) $ in Thousands		Sep. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents		$ 177,288	$ 1,090,464
Accounts receivable, net		682,673	701,838
Other current assets		57,090	54,888
Total current assets		917,051	1,847,190
Property, plant, and equipment
Cost		15,985,933	15,509,910
Less accumulated depreciation		6,259,586	5,795,301
Net property, plant, and equipment		9,726,347	9,714,609
Goodwill		4,783	4,783
Other intangible assets		625,990	649,740
Equity investments		510,628	541,435
Other assets		340,553	387,028
Total assets	[1]	12,125,352	13,144,785
Current liabilities
Accounts and imbalance payables		297,029	312,945
Short-term debt		13,062	1,011,032
Accrued ad valorem taxes		51,035	38,319
Accrued liabilities		279,346	329,398
Total current liabilities		640,472	1,691,694
Long-term liabilities
Long-term debt		6,924,291	6,926,647
Deferred income taxes		31,915	29,679
Asset retirement obligations		389,829	370,195
Other liabilities		810,209	751,400
Total long-term liabilities		8,156,244	8,077,921
Total liabilities	[2]	8,796,716	9,769,615
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at September 30, 2025, and December 31, 2024)		3,172,802	3,224,802
Total partners' capital		3,182,172	3,235,605
Noncontrolling interest		146,464	139,565
Total equity and partners' capital		3,328,636	3,375,170
Total liabilities, equity, and partners' capital		$ 12,125,352	$ 13,144,785
Common units issued		381,333,269	380,556,643
Common units outstanding		381,333,269	380,556,643
WES Operating [Member]
Current assets
Cash and cash equivalents		$ 170,739	$ 1,084,446
Accounts receivable, net		703,237	701,814
Other current assets		55,341	53,775
Total current assets		929,317	1,840,035
Property, plant, and equipment
Cost		15,985,933	15,509,910
Less accumulated depreciation		6,259,586	5,795,301
Net property, plant, and equipment		9,726,347	9,714,609
Goodwill		4,783	4,783
Other intangible assets		625,990	649,740
Equity investments		510,628	541,435
Other assets		337,463	383,808
Total assets	[3]	12,134,528	13,134,410
Current liabilities
Accounts and imbalance payables		296,890	339,108
Short-term debt		13,062	1,011,032
Accrued ad valorem taxes		51,035	38,319
Accrued liabilities		220,696	248,589
Total current liabilities		581,683	1,637,048
Long-term liabilities
Long-term debt		6,924,291	6,926,647
Deferred income taxes		31,915	29,679
Asset retirement obligations		389,829	370,195
Other liabilities		806,637	744,715
Total long-term liabilities		8,152,672	8,071,236
Total liabilities	[4]	8,734,355	9,708,284
Equity and partners' capital
Common units (318,675,578 units issued and outstanding at September 30, 2025, and December 31, 2024)		3,365,537	3,399,650
Total partners' capital		3,365,537	3,399,650
Noncontrolling interest		34,636	26,476
Total equity and partners' capital		3,400,173	3,426,126
Total liabilities, equity, and partners' capital		$ 12,134,528	$ 13,134,410
Common units issued		318,675,578	318,675,578
Common units outstanding		318,675,578	318,675,578

[1] Total assets includes related-party amounts of $965.4 million and $991.1 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts receivable, net of $412.9 million and $401.3 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.

[2] Total liabilities includes related-party amounts of $634.8 million and $529.7 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts and imbalance payable of $32.8 million and $20.6 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.

[3] Total assets includes related-party amounts of $982.2 million and $987.4 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts receivable, net of $433.5 million and $401.3 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.

[4] Total liabilities includes related-party amounts of $634.8 million and $555.9 million as of September 30, 2025, and December 31, 2024, respectively, which includes related-party Accounts and imbalance payable of $32.8 million and $46.8 million as of September 30, 2025, and December 31, 2024, respectively. See Note 6.