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cm:Level3TextBlock: us-gaap:CostIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesDisclosureTextBlock
Standard label: Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure [Table Text Block]
Name: us-gaap:CostIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesDisclosureTextBlock
Documentation: Tabular disclosure of the aggregate of costs (whether the costs are capitalized or charged to expense at the time they are incurred ) incurred for the year in oil and gas property acquisition, exploration and development activities.
Object type: cm:Level3TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:CostIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesDisclosureTextBlock

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Labels
Label Role Language
Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 410 20 50 1 (c)(1) http://fasb.org/us-gaap/role/ref/legacyRef 410
FASB Accounting Standards Codification 932 235 55 4 http://fasb.org/us-gaap/role/ref/legacyRef 932
FASB Accounting Standards Codification 932 235 50 18 http://fasb.org/us-gaap/role/ref/legacyRef 932
FASB Accounting Standards Codification 932 235 50 19 http://fasb.org/us-gaap/role/ref/legacyRef 932
FASB Accounting Standards Codification 932 235 50 20 http://fasb.org/us-gaap/role/ref/legacyRef 932