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cm:Concept: us-gaap:FairValueOptionLoansHeldAsAssetsAggregateDifference
Standard label: Fair Value, Option, Loans Held as Assets, Aggregate Difference
Name: us-gaap:FairValueOptionLoansHeldAsAssetsAggregateDifference
Documentation: For loans held as assets for which the fair value option has been elected, this item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of those loans that are 90 days or more past due, in nonaccrual status, or both.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:FairValueOptionLoansHeldAsAssetsAggregateDifference

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Labels
Label Role Language
Fair Value, Option, Loans Held as Assets, Aggregate Difference http://www.xbrl.org/2003/role/label en-US
Fair Value, Option, Loans Held as Assets, Aggregate Difference, Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 825 10 50 28 (e)(3) http://fasb.org/us-gaap/role/ref/legacyRef 825