Partnership Distributions - Cash Distributions Tables (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025
Distribution Made to Limited Partner [Line Items]
Total quarterly per-unit distribution	$ 0.930	$ 0.910	$ 0.910	$ 0.910	$ 0.910
Total quarterly cash distribution	$ 374,643	$ 379,675	$ 379,521	$ 355,254	$ 355,253
WES Operating [Member]
Distribution Made to Limited Partner [Line Items]
Total quarterly cash distribution	$ 378,683	$ 385,911	$ 391,568	$ 363,290	$ 363,290

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
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

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

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