cm:Concept: us-gaap:CommonStockIssuedEmployeeStockTrust
| Common Stock Issued, Employee Stock Trust |
| us-gaap:CommonStockIssuedEmployeeStockTrust |
| Value of common stock issued to a trust (for example, a 'rabbi trust') set up specifically to accumulate stock for the sole purpose of distribution to participating employees. This trust does not allow employees to immediately or after a holding period diversify into nonemployer securities. The deferred compensation plan for which this trust is set up must be settled by the delivery of a fixed number of shares of employer stock. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:CommonStockIssuedEmployeeStockTrust |