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The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

No definition available.

Name:	us-gaap_DerivativeAverageFloorPrice
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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

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Nominal energy measure used to calculate payments on a derivative instrument.

No definition available.

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
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Nominal volume used to calculate payments on a derivative instrument.

No definition available.

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountVolume
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Fixed price related to the price risk swap derivative.

No definition available.

Name:	us-gaap_DerivativeSwapTypeFixedPrice
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Name:	us-gaap_DerivativeInstrumentRiskAxis=epm_CrudeOilCollarJanuary2025ToMarch2025Member
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Name:	us-gaap_DerivativeInstrumentRiskAxis=epm_NaturalGasFixedPriceSwapJanuary2025ToFebruary2025Member
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Name:	srt_EnergyAxis=srt_NaturalGasPerThousandCubicFeetMember
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Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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Name:	us-gaap_DerivativeInstrumentRiskAxis=epm_NaturalGasFixedPriceSwapMarch2025ToDecember2026Member
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