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cm:Concept: us-gaap:DeterioratedLoansTransferredInDebtSecuritiesAccreditableYieldPeriodIncreaseDecrease
Standard label: Deteriorated Loans Transferred in, Debt Securities, Accreditable Yield, Period Increase (Decrease)
Name: us-gaap:DeterioratedLoansTransferredInDebtSecuritiesAccreditableYieldPeriodIncreaseDecrease
Documentation: The increase (decrease) in accreditable yield (the excess of the loan's cash flows expected to be collected over the investor's initial investment in the loan) for the period.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DeterioratedLoansTransferredInDebtSecuritiesAccreditableYieldPeriodIncreaseDecrease

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Labels
Label Role Language
Deteriorated Loans Transferred in, Debt Securities, Accreditable Yield, Period Increase (Decrease) http://www.xbrl.org/2003/role/label en-US
Deteriorated Loans Transferred in, Debt Securities, Accreditable Yield, Period Increase (Decrease), Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 310 30 50 2 (a)(2) http://fasb.org/us-gaap/role/ref/legacyRef 310