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Proved Developed and Undeveloped Reserves, Net, Period Increase (Decrease)

Name	ProvedDevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease
Namespace	http://fasb.org/srt/2020-01-31
Prefix	srt
Data type	num:volumeItemType
Period type	duration
Substitution Group	xbrli:item
Balance	None
Nillable	True
Abstract	False

Labels

Text	Lang	Role	Container role
Proved Developed and Undeveloped Reserves, Net, Period Increase (Decrease)	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link
Proved Developed and Undeveloped Reserves, Net, Period Increase (Decrease), Total	en-US	http://www.xbrl.org/2003/role/totalLabel	http://www.xbrl.org/2003/role/link
Volume increase (decrease) of proved reserves of oil and gas.	en-US	http://www.xbrl.org/2003/role/documentation	http://www.xbrl.org/2003/role/link

References

Name	Value	Role
Publisher	SEC	http://www.xbrl.org/2009/role/commonPracticeRef
Name	Form 20-F	http://www.xbrl.org/2009/role/commonPracticeRef
Section	Item 18	http://www.xbrl.org/2009/role/commonPracticeRef
Subsection	Instruction 2	http://www.xbrl.org/2009/role/commonPracticeRef

Related Child Concepts

	Name	Relation Type	Role
	Proved Developed and Undeveloped Reserves, Revisions of Previous Estimates `srt:ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations
	Proved Developed and Undeveloped Reserves, Improved Recovery `srt:ProvedDevelopedAndUndevelopedReservesImprovedRecovery`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations
	Proved Developed and Undeveloped Reserves, Purchases of Minerals in Place `srt:ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations
	Proved Developed and Undeveloped Reserves, Extensions, Discoveries, and Additions `srt:ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations
	Proved Developed and Undeveloped Reserves, Production `srt:ProvedDevelopedAndUndevelopedReservesProduction`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations
	Proved Developed and Undeveloped Reserves, Sales of Minerals in Place `srt:ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace`	summation-item	http://fasb.org/srt/role/disclosure/SRTCalculations

Related Parent Concepts

	Name	Relation Type	Role
	Proved Developed and Undeveloped Reserves [Roll Forward] `srt:IncreaseDecreaseInProvedDevelopedAndUndevelopedReservesRollForward`	parent-child	http://fasb.org/srt/role/disclosure/ExtractiveIndustries
	Proved Developed and Undeveloped Reserves [Roll Forward] `srt:IncreaseDecreaseInProvedDevelopedAndUndevelopedReservesRollForward`	domain-member	http://fasb.org/srt/role/disclosure/ExtractiveIndustriesProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTable