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cm:Concept: us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList
Standard label: Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible List]
Name: us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList
Documentation: Indicates line item in statement of income or comprehensive income that includes expected return (loss) on plan asset component of net periodic benefit (cost) credit for defined benefit plan.
Object type: cm:Concept
Data type: srt-types:extensibleListItemType
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList

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Labels
Label Role Language
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible List] 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 (h) http://www.xbrl.org/2003/role/disclosureRef 715
FASB Accounting Standards Codification 715 20 50 6 (a) http://www.xbrl.org/2003/role/disclosureRef 715