cm:Concept: us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOtherDescription
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other, Description |
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOtherDescription |
Description of reason for increase (decrease), classified as other, in number of awards under share-based payment arrangement. Excludes share and unit options. |
cm:Concept |
Text/String (xbrli:stringItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOtherDescription |