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cm:Concept: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther
Standard label: Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other
Name: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther
Documentation: Disclosure regarding factors used to determine that the impairment of securities categorized as held-to-maturity where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of other evidence considered in reaching a conclusion that the held-to-maturity investments are not other-than-temporarily impaired, including, for example, performance indicators of the underlying assets in the security (including default rates, delinquency rates and percentage of nonperforming assets), loan to collateral value ratios, third-party guarantees, current levels of subordination, vintage, geographic concentration, industry analyst reports, sector credit ratings, volatility of the security's fair value, and any other relevant information.
Object type: cm:Concept
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther

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Labels
Label Role Language
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 320 10 50 6 (b)(5) http://fasb.org/us-gaap/role/ref/legacyRef 320