Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves.

Name:	srt_ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs.

Name:	srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves.

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Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of increase in standardized measure of discounted future net cash flow as a result of purchases of minerals in place.

Name:	srt_IncreaseDueToPurchasesOfMineralsInPlace
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production.

Name:	srt_NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase in standardized measure of discounted future net cash flow as a result of previously estimated development costs incurred.

Name:	srt_PreviouslyEstimatedDevelopmentCostsIncurred
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves.

Name:	srt_RevisionsOfPreviousQuantityEstimates
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced.

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Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources.

Name:	srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves.

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Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
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-Paragraph 6
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
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-Name Accounting Standards Codification
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-Paragraph 30
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
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-Topic 932
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-35

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org//1943274/2147482274/932-235-50-33

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-31