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cm:Concept: us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
Standard label: Other than Temporary Impairment Losses, Investments, Available-for-sale Securities
Name: us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
Documentation: The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.
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:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities

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Labels
Label Role Language
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities http://www.xbrl.org/2003/role/label en-US
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic