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Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Crude and NGLs inventory	$ 1,250	$ 2,733
Materials and supplied inventory - short term	11,169	10,103
Materials and supplies inventory - long term	158,900	131,600
Natural-Gas Liquids [Member]
NGLs line-fill inventory	$ 7,500	$ 3,200
WES Operating [Member]
Ownership interest by noncontrolling interest owner	1.80%	1.90%	2.00%
Chipeta [Member]
Ownership interest by noncontrolling interest owner	25.00%
WES [Member] | WES Operating [Member]
Ownership interest	98.20%
Occidental [Member] | WES Operating [Member]
Ownership interest	1.80%

X

- Definition

Carrying amount as of the balance sheet date of liquid hydrocarbon components recovered from natural gas.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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X

- Definition

Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-3

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- Definition

The carrying amount of capitalized costs of materials, supplies, and other assets, which are not included in inventory but used in production.

+ References

No definition available.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

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- Definition

Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed, classified as non-current.

+ References

No definition available.

+ Details

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