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cm:Concept: us-gaap:OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings
Standard label: Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Recognized in Earnings
Name: us-gaap:OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings
Documentation: Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.
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:OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings

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Labels
Label Role Language
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Recognized in Earnings http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 320 10 45 8A http://www.xbrl.org/2003/role/disclosureRef 320

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Roll Up Relations
Part Of Roll Up:
us-gaap:OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings