v3.24.1.u1

Partnership Distributions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Distribution Made to Limited Partner [Line Items]
Enhanced quarterly per-unit distribution		$ 0.356
Enhanced quarterly cash distribution		$ 140.1
WES [Member]
Distribution Made to Limited Partner [Line Items]
Partnership agreement day requirement of distribution of available cash	55 days

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DistributionMadeToLimitedPartnerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of equity impact of enhanced cash distribution declared to unit-holder of limited partnership (LP).

+ References

No definition available.

+ Details

Name:	wes_EnhancedDistributionMadeToLimitedPartnerCashDistributionsDeclared
Namespace Prefix:	wes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Per unit of ownership amount of enhanced cash distributions declared to unit-holder of a limited partnership (LP).

+ References

No definition available.

+ Details

Name:	wes_EnhancedDistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit
Namespace Prefix:	wes_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of days subsequent to each quarter the Partnership is required to make distributions to unitholders of record on the applicable record date.

+ References

No definition available.

+ Details

Name:	wes_NumberOfDaysSubsequentToQuarterEndThatCashIsRequiredToBeDistributed
Namespace Prefix:	wes_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=wes_WesternMidstreamPartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: