NATURE OF OPERATIONS AND ORGANIZATION (Details)	3 Months Ended
Mar. 31, 2021 Segment pipeline partnership $ / shares	Dec. 31, 2020 $ / shares
Schedule Of Organization [Line Items]
Number of pipeline \| pipeline	4
Number of reportable segments \| Segment	1
Number of limited partnerships \| partnership	4
Altus Midstream LP
Schedule Of Organization [Line Items]
General partner, ownership interest	23.10%
Apache \| Altus Midstream LP
Schedule Of Organization [Line Items]
Limited partners, ownership interest	76.90%
Class A Common Stock
Schedule Of Organization [Line Items]
Common stock, par value (in USD per share)	$ 0.0001	$ 0.0001
Class C Common Stock
Schedule Of Organization [Line Items]
Common stock, par value (in USD per share)	$ 0.0001	$ 0.0001

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Number Of Pipeline Options

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Schedule Of Organization [Line Items]

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Face amount or stated value per share of common stock.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

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