Selected Components of Working Capital - Accrued Liabilities Table (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued interest expense	$ 131,177	$ 137,307
Short-term asset retirement obligations	9,934	20,215
Short-term remediation and reclamation obligations	7,454	2,950
Income taxes payable	1,516	3,399
Contract liabilities	27,763	31,477
Other	85,405	74,599
Total accrued liabilities	263,249	269,947
WES Operating [Member]
Accrued interest expense	131,177	137,307
Short-term asset retirement obligations	9,934	20,215
Short-term remediation and reclamation obligations	7,454	2,950
Income taxes payable	1,516	3,399
Contract liabilities	27,763	31,477
Other	32,849	35,485
Total accrued liabilities	$ 210,693	$ 230,833