cm:Concept: us-gaap:UnrecoveredProductionCostsExcessUnrecoverableUnderExistingFirmOrders
| Unrecovered Production Costs, Excess Unrecoverable under Existing Firm Orders |
| us-gaap:UnrecoveredProductionCostsExcessUnrecoverableUnderExistingFirmOrders |
| The portion of the aggregate amount of manufacturing or production costs and any related deferred costs (for example, initial tooling costs) that exceeds the aggregate estimated cost of all in-process and delivered units on the basis of the estimated average cost of all units expected to be produced under long-term contracts and programs not yet complete, which would not be absorbed in cost of sales based on existing firm orders at the latest balance sheet date. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:UnrecoveredProductionCostsExcessUnrecoverableUnderExistingFirmOrders |