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cm:Concept: us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Standard label: Excess Tax Benefit from Share-based Compensation, Operating Activities
Name: us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Documentation: Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

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Labels
Label Role Language
Excess Tax Benefit from Share-based Compensation, Operating Activities http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 718 20 55 24 http://fasb.org/us-gaap/role/ref/legacyRef 718

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Roll Up Relations
Part Of Roll Up:
us-gaap:AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
us-gaap:PaymentsForOperatingActivities