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cm:Member: us-gaap:MultiemployerPlansPostretirementBenefitMember
Standard label: Multiemployer Plans, Postretirement Benefit [Member]
Name: us-gaap:MultiemployerPlansPostretirementBenefitMember
Documentation: Postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.
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:MultiemployerPlansPostretirementBenefitMember

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Labels
Label Role Language
Multiemployer Plans, Postretirement Benefit [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic