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cm:Concept: us-gaap:AssetRetirementObligationsDescription
Standard label: Asset Retirement Obligations, Description
Name: us-gaap:AssetRetirementObligationsDescription
Documentation: A general description of the asset retirement obligations and the associated long-lived assets. Description may include the terms of the legal restriction.
Object type: cm:Concept
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:AssetRetirementObligationsDescription

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Labels
Label Role Language
Asset Retirement Obligations, Description 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 (a) http://fasb.org/us-gaap/role/ref/legacyRef 410