cm:Level3TextBlock: us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock |
Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. |
cm:Level3TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock |