cm:Table: us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable
| Collaborative Arrangement and Arrangement Other than Collaborative [Table] |
| us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable |
| Disclosure of information about collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations. |
| cm:Table |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable |