cm:Level2TextBlock: us-gaap:PropertyPlantAndEquipmentPreproductionDesignAndDevelopmentCosts
| Property, Plant and Equipment, Preproduction Design and Development Costs [Policy Text Block] |
| us-gaap:PropertyPlantAndEquipmentPreproductionDesignAndDevelopmentCosts |
| Disclosure of accounting policy for the preproduction design and development costs it incurs related to long-term supply arrangements, including whether such costs are capitalized or expensed as incurred. The entity also may disclose the aggregate amount of (1) assets recognized for agreements that contractually reimburse the entity for its pre-production design and development costs (2) assets recognized for molds, dies and other tools that the entity owns and (3) assets recognized for molds, dies and other tools that the entity does not own. |
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| us-gaap:PropertyPlantAndEquipmentPreproductionDesignAndDevelopmentCosts |