RELATED PARTY TRANSACTIONS (Details) - Predecessor - USD ($) $ in Millions	2 Months Ended	5 Months Ended
May 31, 2018	May 31, 2018
EnerVest, Ltd.
Related Party Transaction [Line Items]
Administrative fees paid to related party	$ 2.9	$ 7.2
Direct expenses incurred and reimbursed to related party	$ 3.3	$ 8.4
EV Energy GP \| EnerVest, Ltd.
Related Party Transaction [Line Items]
Percentage of general partnership interest		71.25%
EVEP \| EV Energy GP
Related Party Transaction [Line Items]
Percentage of general partnership interest		2.00%

Direct costs paid to a related party for expenses incurred in the operations of wells and gathering systems.

No definition available.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

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

+ Details

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- 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

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- Definition

Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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