cm:Concept: us-gaap:OilAndGasJointInterestBillingReceivablesNoncurrent
| Oil and Gas Joint Interest Billing Receivables, Noncurrent |
| us-gaap:OilAndGasJointInterestBillingReceivablesNoncurrent |
| Noncurrent 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. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:OilAndGasJointInterestBillingReceivablesNoncurrent |