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cm:Axis: us-gaap:SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis
Standard label: Security Owned and Sold, Not yet Purchased, at Fair Value [Axis]
Name: us-gaap:SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis
Documentation: Group of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes that are carried at fair value including securities sold, not yet purchased.
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:SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis

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Labels
Label Role Language
Security Owned and Sold, Not yet Purchased, at Fair Value [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 2 http://fasb.org/us-gaap/role/ref/legacyRef 940