cm:Level3TextBlock: us-gaap:CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosureTextBlock
Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure [Table Text Block] |
us-gaap:CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosureTextBlock |
Tabular disclosure of aggregate capitalized costs relating to an enterprise's oil and gas producing activities and the aggregate related accumulated depreciation, depletion, amortization, and valuation allowances. |
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us-gaap:CapitalizedCostsRelatingToOilAndGasProducingActivitiesDisclosureTextBlock |