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Related-Party Transactions - Summary of WES Operating Related-Party Transactions Tables (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Consolidated statements of operations [Abstract]      
General and administrative $ 75,150 $ 66,786  
Consolidated balance sheets [Abstract]      
Accounts receivable, net 822,747   $ 773,197
Other current assets 69,165   64,253
Other assets 345,103   348,697
Accounts and imbalance payables 413,812   319,170
Consolidated statements of cash flows [Abstract]      
Distributions to WES Operating unitholders [1] (379,675) (340,996)  
Related Parties [Member]      
Consolidated statements of operations [Abstract]      
General and administrative (20) 31  
Consolidated balance sheets [Abstract]      
Accounts receivable, net 390,511   407,941
Other current assets 6,478   524
Other assets 33,717   33,124
Accounts and imbalance payables 25,005   20,639
Consolidated statements of cash flows [Abstract]      
Distributions to WES Operating unitholders (159,015) (152,899)  
WES Operating [Member]      
Consolidated statements of operations [Abstract]      
General and administrative 74,805 66,974  
Consolidated balance sheets [Abstract]      
Accounts receivable, net 833,628   773,165
Other current assets 68,904   63,604
Other assets 340,631   345,529
Accounts and imbalance payables 413,521   376,947
Consolidated statements of cash flows [Abstract]      
Distributions to WES Operating unitholders [2] (385,911) (347,356)  
WES Operating [Member] | Related Parties [Member]      
Consolidated statements of operations [Abstract]      
General and administrative 1,500 1,537  
Consolidated balance sheets [Abstract]      
Accounts receivable, net 401,426   407,941
Other current assets 6,360   447
Other assets 29,245   29,957
Accounts and imbalance payables 25,005   $ 76,040
Consolidated statements of cash flows [Abstract]      
Distributions to WES Operating unitholders $ (385,911) $ (347,356)  
[1] See Note 6.
[2] See Note 6.