| Name | ImpactOnEarningsAndFinancingNeedsResultingFromInabilityToMeetOilAndGasDeliveryCommitments |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Any impact on the registrant's earnings and financing needs resulting from its inability to meet short-term or long-term contractual obligations. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Impact on Earnings and Financing Needs Resulting from Inability to Meet Oil and Gas Delivery Commitments (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |