| Name | StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease |
|---|---|
| Namespace | http://fasb.org/srt/2021-01-31 |
| Prefix | srt |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Period Increase (Decrease) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Period Increase (Decrease), Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Amount of increase (decrease) in standardized measure of discounted future net cash flow relating to proved oil and gas reserves. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| elementCreationTaxonomyVersion | 2008 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 932 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 235 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 35 | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://asc.fasb.org/extlink&oid=123377692&loc=d3e62500-109447 | http://www.xbrl.org/2003/role/disclosureRef |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 932 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 235 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 35A | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447 | http://www.xbrl.org/2003/role/disclosureRef |
| Publisher | SEC | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Form 20-F | http://www.xbrl.org/2003/role/disclosureRef |
| Section | Item 18 | http://www.xbrl.org/2003/role/disclosureRef |
| Subsection | Instruction 2 | http://www.xbrl.org/2003/role/disclosureRef |
| Publisher | FASB | http://www.xbrl.org/2003/role/exampleRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/exampleRef |
| Topic | 932 | http://www.xbrl.org/2003/role/exampleRef |
| SubTopic | 235 | http://www.xbrl.org/2003/role/exampleRef |
| Section | 55 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 7 | http://www.xbrl.org/2003/role/exampleRef |
| URI | http://asc.fasb.org/extlink&oid=34713648&loc=d3e63123-109448 | http://www.xbrl.org/2003/role/exampleRef |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:PreviouslyEstimatedDevelopmentCostsIncurred | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:RevisionsOfPreviousQuantityEstimates | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:IncreaseDecreaseInEstimatedFutureDevelopmentCosts | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:IncreaseDueToPurchasesOfMineralsInPlace | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:DecreaseDueToSalesOfMineralsInPlace | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries | |
srt:StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther | summation-item | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:IncreaseDecreaseInStandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesRollForward | parent-child | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries |