cm:Concept: us-gaap:OilAndGasJointInterestBillingReceivablesCurrent
| Oil and Gas Joint Interest Billing Receivables, Current |
| us-gaap:OilAndGasJointInterestBillingReceivablesCurrent |
| Current portion of accounts receivable attributable to joint interest partners in oil and gas properties. These are billings to the non-operators associated with the operation of wells and are based on those owners' working interests in the wells. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:OilAndGasJointInterestBillingReceivablesCurrent |