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cm:Member: us-gaap:MeasurementInputCommodityFuturePriceMember
Standard label: Measurement Input, Commodity Future Price [Member]
Name: us-gaap:MeasurementInputCommodityFuturePriceMember
Documentation: Measurement input using future price of commodity.
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:MeasurementInputCommodityFuturePriceMember

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Labels
Label Role Language
Measurement Input, Commodity Future Price [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 820 10 50 2 (bbb) http://www.xbrl.org/2009/role/commonPracticeRef 820