v3.25.2
Debt and Interest Expense - Additional Information (Details) - WES Operating [Member] - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2025
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Senior Notes [Member]        
Debt Instrument [Line Items]        
Principal amount   $ 0   $ 1,000,589,000
3.950% Senior Notes due 2025 [Member] | Senior Notes [Member]        
Debt Instrument [Line Items]        
Senior note, interest rate   3.95%    
Repayments of senior notes   $ 336,758,000    
3.100% Senior Notes due 2025 [Member] | Senior Notes [Member]        
Debt Instrument [Line Items]        
Senior note, interest rate   3.10%    
Repayments of senior notes   $ 663,831,000    
RCF [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Facility, maximum borrowing capacity   2,000,000,000    
Facility, expandable maximum borrowing capacity   2,500,000,000    
Facility, outstanding borrowings   0    
Facility, available borrowing capacity   $ 2,000,000,000    
Facility, interest rate at period end   5.62% 6.64%  
Facility, fee rate   0.20% 0.20%  
RCF [Member] | Revolving Credit Facility [Member] | Non-Extending Lenders [Member]        
Debt Instrument [Line Items]        
Facility, maximum borrowing capacity   $ 120,000,000    
Commercial Paper Program | Commercial Paper Program        
Debt Instrument [Line Items]        
Principal amount   0    
Facility, maximum borrowing capacity   $ 2,000,000,000    
Commercial Paper Program | Commercial Paper Program | Maximum [Member]        
Debt Instrument [Line Items]        
Commercial paper, term   397 days    
Senior Notes [Member]        
Debt Instrument [Line Items]        
Principal amount   $ 6,976,834,000   6,976,834,000
Repayments of senior notes $ 150,000,000      
Senior Notes [Member] | 4.050% Senior Notes due 2030 [Member]        
Debt Instrument [Line Items]        
Senior note, interest rate   4.05%    
Senior note, effective interest rate   4.169% 4.169%  
Senior Notes [Member] | 5.250% Senior Notes due 2050 [Member]        
Debt Instrument [Line Items]        
Senior note, interest rate   5.25%    
Senior note, effective interest rate   5.363% 5.363%  
Senior Notes [Member] | 5.450% Senior Notes due 2034 [Member]        
Debt Instrument [Line Items]        
Senior note, interest rate   5.45%    
Principal amount       $ 800,000,000