cm:Concept: us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossCurrent
Debt Securities, Available-for-sale, Allowance for Credit Loss, Current |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossCurrent |
Amount of 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), classified as current. |
cm:Concept |
Monetary (xbrli:monetaryItemType) |
As Of (instant) |
Credit |
false |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossCurrent |