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cm:Concept: us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery
Standard label: Debt Securities, Available-for-sale, Allowance for Credit Loss, Recovery
Name: us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery
Documentation: Amount of increase in allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), from recovery.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery

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Labels
Label Role Language
Debt Securities, Available-for-sale, Allowance for Credit Loss, Recovery http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 326 30 50 9 (h) http://www.xbrl.org/2003/role/disclosureRef 326