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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 272
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-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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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.

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- Definition

The number of limited partner units outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

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- Definition

Discount rate percentage used in calculating the distribution to the Class C unitholder.

+ References

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Number of common units issued for each convertible Class C unit that is converted.

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- Definition

Distribution sharing percentage the general partner is entitled to, including quarterly distributions and incentive distributions.

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- Definition

Entitlement to incentive distributions after the minimum quarterly distribution and target distribution levels have been achieved.

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- 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.

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Partnership Distributions - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended						6 Months Ended
	Feb. 28, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019
Distribution Made to Limited Partner [Line Items]
Partnership agreement day requirement of distribution of available cash								55 days
Common units outstanding		453,008,854		218,937,797				453,008,854
Total quarterly cash distribution		$ 279,959	$ 276,324	$ 131,910	$ 130,268	$ 127,531	$ 124,518
WES Operating [Member]
Distribution Made to Limited Partner [Line Items]
Total quarterly cash distribution		$ 288,100	$ 283,300	$ 234,787	$ 230,239	$ 225,691	$ 221,133
Distribution sharing percentage	1.50%
Incentive distributions percentage	48.00%
WES Operating [Member] \| Common Units [Member]
Distribution Made to Limited Partner [Line Items]
Common units outstanding	152,609,285
WES Operating [Member] \| Class C Units [Member]
Distribution Made to Limited Partner [Line Items]
Common units outstanding	14,681,388
Class C units, discount rate percentage on distribution	6.00%
Class C units, common units issued upon conversion	1
WES Operating [Member] \| Anadarko [Member] \| Common Units [Member]
Distribution Made to Limited Partner [Line Items]
Common units outstanding		6,400,000						6,400,000