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cm:Level3TextBlock: us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock
Standard label: Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]
Name: us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock
Documentation: Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.
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:ScheduleOfFairValueOffBalanceSheetRisksTextBlock

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Labels
Label Role Language
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 825 10 50 10 http://fasb.org/us-gaap/role/ref/legacyRef 825
FASB Accounting Standards Codification 825 10 50 11 http://fasb.org/us-gaap/role/ref/legacyRef 825