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cm:Concept: us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal
Standard label: Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal)
Name: us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal
Documentation: Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity).
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal

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Labels
Label Role Language
Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 326 20 50 13 (b) http://www.xbrl.org/2003/role/disclosureRef 326