cm:Concept: us-gaap:HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment |
us-gaap:HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment |
Amount, before other-than-temporary impairment (OTTI) accretion, of investment in debt securities measured at amortized cost (held-to-maturity). |
cm:Concept |
Monetary (xbrli:monetaryItemType) |
As Of (instant) |
Debit |
false |
us-gaap:HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment |