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cm:Member: us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember
Standard label: Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member]
Name: us-gaap:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember
Documentation: The number of employees covered by a collective bargaining agreement that will expire within one year after the balance sheet date, when it serves as a benchmark in a concentration of risk calculation.
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:WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember

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Labels
Label Role Language
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 275 10 50 20 (a) http://fasb.org/us-gaap/role/ref/legacyRef 275