cm:Concept: us-gaap:DescriptionOfDeferredCostsRelatedToLongTermContracts
| Description of Deferred Costs Related to Long-term Contracts |
| us-gaap:DescriptionOfDeferredCostsRelatedToLongTermContracts |
| The description of deferred costs for long-term contracts and programs as of the balance sheet date. Examples include initial tooling and deferred production costs. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:DescriptionOfDeferredCostsRelatedToLongTermContracts |