cm:Concept: us-gaap:GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments |
us-gaap:GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments |
Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of price risk derivatives not designated as hedging instruments. |
cm:Concept |
Monetary (xbrli:monetaryItemType) |
For Period (duration) |
Credit |
false |
us-gaap:GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments |