cm:Table: us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable
Debt Securities, Available-for-sale, Allowance for Credit Loss [Table] |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable |
Disclosure of information about allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). |
cm:Table |
Text/String (xbrli:stringItemType) |
For Period (duration) |
(no balance type) |
true |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossTable |