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cm:Level3TextBlock: us-gaap:ScheduleOfGainLossOnSecuritizationsOfFinancialAssetsAccountedForAsSaleTextBlock
Standard label: Schedule of Gain (Loss) on Securitizations or Asset-backed Financing Arrangements of Financial Assets Accounted for as Sale [Table Text Block]
Name: us-gaap:ScheduleOfGainLossOnSecuritizationsOfFinancialAssetsAccountedForAsSaleTextBlock
Documentation: Tabular disclosure of amounts pertaining to the excess over or deficiency from the carrying amounts of financial assets which are recognized upon the sale of financial assets.
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:ScheduleOfGainLossOnSecuritizationsOfFinancialAssetsAccountedForAsSaleTextBlock

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Labels
Label Role Language
Schedule of Gain (Loss) on Securitizations or Asset-backed Financing Arrangements of Financial Assets Accounted for as Sale [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 860 20 50 3 (b) http://fasb.org/us-gaap/role/ref/legacyRef 860