cm:Member: us-gaap:NonsoftwareServiceSupportAndMaintenanceArrangementMember
| Nonsoftware Service, Support and Maintenance Arrangement [Member] |
| us-gaap:NonsoftwareServiceSupportAndMaintenanceArrangementMember |
| Category of deferred revenue by arrangement wherein an entity agrees to debug, revise and maintain one or more specified products, under which fees are taken into income as performance occurs. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:NonsoftwareServiceSupportAndMaintenanceArrangementMember |