Debt and Interest Expense - Additional Information (Details) - WES Operating [Member] - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount	$ 336,758,000		$ 1,000,589,000
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
3.950% Senior Notes due 2025 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior note, interest rate	3.95%
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%	6.63%
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