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cm:Concept: us-gaap:DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesAndInputsChanges
Standard label: Defined Benefit Plan, Plan Assets, Change in Valuation Technique and Input, Description
Name: us-gaap:DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesAndInputsChanges
Documentation: Description of change in valuation technique and input used to measure fair value of defined benefit plan asset.
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:DefinedBenefitPlanPlanAssetsAtFairValueValuationTechniquesAndInputsChanges

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Labels
Label Role Language
Defined Benefit Plan, Plan Assets, Change in Valuation Technique and Input, Description http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 715 20 50 1 (d)(iv)(03) http://www.xbrl.org/2003/role/disclosureRef 715