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Equity and Partners' Capital - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Feb. 20, 2025
Schedule of Investments [Line Items]        
Common units outstanding 393,775,833 408,141,366    
General partner units outstanding 9,060,641 9,060,641    
Distribution of receivable related to the WES unit redemption with Occidental [1] $ 610,000   $ 0  
Unit repurchases, authorized amount       $ 250,000
Unit repurchases, remaining authorized amount $ 250,000      
Public [Member]        
Schedule of Investments [Line Items]        
Unit repurchases, number of units 0      
WES [Member] | Public [Member]        
Schedule of Investments [Line Items]        
Common units outstanding 243,401,657      
Limited partner's interest 60.50%      
WES [Member] | WES Operating [Member]        
Schedule of Investments [Line Items]        
Limited partner's interest 98.10%      
Occidental [Member] | WES [Member]        
Schedule of Investments [Line Items]        
Common units outstanding 150,374,176      
Limited partner's interest 37.30%      
General partner units outstanding 9,060,641      
General partner's interest 2.20%      
Occidental [Member] | WES Operating [Member]        
Schedule of Investments [Line Items]        
Limited partner's interest 1.90%      
[1] See Note 6.