| Name | ProvedDevelopedAndUndevelopedReserveNetEnergyPeriodIncreaseDecrease |
|---|---|
| Namespace | http://fasb.org/srt/2020-01-31 |
| Prefix | srt |
| Data type | num:energyItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Proved Developed and Undeveloped Reserve, Net (Energy), Period Increase (Decrease) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Proved Developed and Undeveloped Reserve, Net (Energy), Period Increase (Decrease), Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Energy measure of increase (decrease) of quantity of proved reserve of oil and gas, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe). | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| TaxonomyVersion | 2018 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2017-08 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedReferences | true | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | FASB | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2009/role/commonPracticeRef |
| Topic | 932 | http://www.xbrl.org/2009/role/commonPracticeRef |
| SubTopic | 235 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 50 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Paragraph | 5 | http://www.xbrl.org/2009/role/commonPracticeRef |
| URI | http://asc.fasb.org/extlink&oid=68064819&loc=d3e61831-109447 | http://www.xbrl.org/2009/role/commonPracticeRef |
| 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 |