cm:Concept: us-gaap:ReceivablesLongTermContractsOrPrograms
| Receivables, Long-term Contracts or Programs |
| us-gaap:ReceivablesLongTermContractsOrPrograms |
| Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:ReceivablesLongTermContractsOrPrograms |