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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Debt - Additional Information (Details) - WES Operating [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount	$ 440,505		$ 440,505
RCF [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Facility, outstanding borrowings	0
Facility, available borrowing capacity	$ 2,000,000
Facility, interest rate at period end	4.96%	5.62%
Facility, fee rate	0.20%	0.20%
Commercial Paper Program \| Commercial Paper Program
Debt Instrument [Line Items]
Principal amount	$ 0
Facility, maximum borrowing capacity	$ 2,000,000
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	$ 8,236,329		8,236,329
Senior Notes [Member] \| 4.050% Senior Notes due 2030 [Member]
Debt Instrument [Line Items]
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, effective interest rate	5.363%	5.363%
Senior Notes [Member] \| 4.650% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Senior note, interest rate	4.65%
Senior Notes [Member] \| 4.800% Senior Notes Due 2031 and 5.500% Senior Notes Due 2035
Debt Instrument [Line Items]
Principal amount			$ 1,200,000