cm:Concept: us-gaap:CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments
Cost-method Investments, Realized Losses, Excluding Other than Temporary Impairments |
us-gaap:CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments |
For investments in debt and equity securities accounted for at cost, the excess of the carrying amount over net sale proceeds of investments disposed of during the period. |
cm:Concept |
Monetary (xbrli:monetaryItemType) |
For Period (duration) |
Debit |
false |
us-gaap:CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments |