cm:Concept: us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Excess Tax Benefit from Share-based Compensation, Operating Activities |
us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities |
Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. |
cm:Concept |
Monetary (xbrli:monetaryItemType) |
For Period (duration) |
Credit |
false |
us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities |