cm:Concept: us-gaap:IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights
Incremental Common Shares Attributable to Participating Nonvested Shares with Non-forfeitable Dividend Rights |
us-gaap:IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights |
This element represents nonvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid). Basic and dilutive earnings per share are generally disclosed for such shares using the two-class method. |
cm:Concept |
Shares (xbrli:sharesItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights |