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Selected Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Accrued interest expense | $ 133,076 | $ 136,006
Short-term asset retirement obligations | 6,876 | 9,942
Short-term remediation and reclamation obligations | 8,914 | 8,376
Income taxes payable | 4,710 | 9,430
Contract liabilities | 192,031 | 22,883
Accrued payroll and benefits | 57,660 | 69,623
Short-term lease liabilities | 75,930 | 65,295
Other | 49,646 | 86,820
Total accrued liabilities | 528,843 | 408,375
WES Operating [Member] |  |
Accrued interest expense | 133,076 | 136,006
Short-term asset retirement obligations | 6,876 | 9,942
Short-term remediation and reclamation obligations | 8,914 | 8,376
Income taxes payable | 5,368 | 9,430
Contract liabilities | 192,031 | 22,883
Accrued payroll and benefits | 1,062 | 4,450
Short-term lease liabilities | 75,930 | 65,295
Other | 48,668 | 70,491
Total accrued liabilities | $ 471,925 | $ 326,873

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