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cm:Axis: us-gaap:PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis
Standard label: Principal Transaction Revenue, Description of Reporting Category [Axis]
Name: us-gaap:PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis
Documentation: Information by reporting category or type of financial instruments related to a group of items that represent revenue.
Object type: cm:Axis
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis

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Labels
Label Role Language
Principal Transaction Revenue, Description of Reporting Category [Axis] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 940 320 45 5 http://fasb.org/us-gaap/role/ref/otherTransitionRef 940