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cm:Level1TextBlock: us-gaap:InterestIncomeAndInterestExpenseDisclosureTextBlock
Standard label: Interest Income and Interest Expense Disclosure [Text Block]
Name: us-gaap:InterestIncomeAndInterestExpenseDisclosureTextBlock
Documentation: The entire disclosure for interest income and interest expense for enterprises that derive a significant portion of their revenue from interest collected on investments, loans, and securities.
Object type: cm:Level1TextBlock
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:InterestIncomeAndInterestExpenseDisclosureTextBlock

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Labels
Label Role Language
Interest Income and Interest Expense Disclosure [Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 942 220 S99 1 (SX 210.9-04.1-12) http://fasb.org/us-gaap/role/ref/legacyRef 942