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cm:Concept: us-gaap:DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt
Standard label: Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt
Name: us-gaap:DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt
Documentation: Amount, before benefit payment, of receipt from prescription drug subsidy which increases benefit obligation of defined benefit postretirement plan.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DefinedBenefitPlanBenefitObligationPrescriptionDrugSubsidyReceipt

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Labels
Label Role Language
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 715 60 50 4 http://fasb.org/us-gaap/role/ref/legacyRef 715

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Roll Up Relations
Part Of Roll Up:
us-gaap:DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease