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cm:Member: us-gaap:OilAndGasExplorationAndProductionMember
Standard label: Oil and Gas, Exploration and Production [Member]
Name: us-gaap:OilAndGasExplorationAndProductionMember
Documentation: Process related to upstream activity for viscous liquid derived from petroleum and flammable gas occurring naturally underground. Activity includes, but is not limited to, exploration, development and production.
Object type: cm:Member
Data type: [Member] (nonnum:domainItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:OilAndGasExplorationAndProductionMember

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Labels
Label Role Language
Oil and Gas, Exploration and Production [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 606 10 55 91 (a) http://www.xbrl.org/2009/role/commonPracticeRef 606