v3.25.0.1

Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 701,838	$ 666,637
Customers [Member]
Revenue from Contracts with Customer [Line Items]
Accounts receivable, net	$ 693,900	$ 661,600

X

- Definition

Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

[Line Items] for Revenue from Contracts with Customer [Table]

+ References

No definition available.

+ Details

Name:	wes_RevenuefromContractswithCustomerLineItems
Namespace Prefix:	wes_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_MajorCustomersAxis=wes_CustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: