cm:Concept: us-gaap:ContractReceivableDueInRemainderOfFiscalYear
| Contract Receivable, Due in Remainder of Fiscal Year |
| us-gaap:ContractReceivableDueInRemainderOfFiscalYear |
| Amount billed to customers under long-term contracts or programs to be collected in the remainder of the fiscal year following the latest fiscal year. Excludes amounts due that have been withheld because of retainage provisions in a contract. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:ContractReceivableDueInRemainderOfFiscalYear |