cm:Concept: us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories
| Increase (Decrease) in Raw Materials, Packaging Materials and Supplies Inventories |
| us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories |
| The increase (decrease) during the reporting period in the value of raw materials, packaging materials and supplies held in inventory. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Credit |
| false |
| us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories |