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cm:Level3TextBlock: us-gaap:ScheduleOfPrincipalTransactionsRevenueTextBlock
Standard label: Schedule of Principal Transactions Revenue [Table Text Block]
Name: us-gaap:ScheduleOfPrincipalTransactionsRevenueTextBlock
Documentation: Tabular disclosure of revenue by reporting categories or types of financial instruments, including derivatives but excluding dividends and interests, from trading for own account by broker dealers.
Object type: cm:Level3TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ScheduleOfPrincipalTransactionsRevenueTextBlock

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Labels
Label Role Language
Schedule of Principal Transactions Revenue [Table Text Block] 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/legacyRef 940