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cm:Concept: us-gaap:FairValueOptionAggregateDifferencesLoansAndLongTermReceivables
Standard label: Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables
Name: us-gaap:FairValueOptionAggregateDifferencesLoansAndLongTermReceivables
Documentation: This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of loans and long-term receivables (other than securities categorized as trading, available-for-sale or held-to-maturity) that have contractual principal amounts and for which the fair value option has been elected.
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:FairValueOptionAggregateDifferencesLoansAndLongTermReceivables

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Labels
Label Role Language
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 825 10 50 28 (d)(1) http://fasb.org/us-gaap/role/ref/legacyRef 825