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cm:Concept: us-gaap:DebtSecuritiesAvailableForSaleTerm
Standard label: Debt Securities, Available-for-sale, Term
Name: us-gaap:DebtSecuritiesAvailableForSaleTerm
Documentation: Period between issuance and maturity of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.
Object type: cm:Concept
Data type: xbrli:durationItemType
Period type: As Of (instant)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:DebtSecuritiesAvailableForSaleTerm

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

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References
Reference Role Topic
FASB Accounting Standards Codification 820 10 50 2 (bbb)(2) http://www.xbrl.org/2009/role/commonPracticeRef 820