cm:Concept: us-gaap:LossContingencyAccrualProductLiabilityUndiscountedDueInFifthYear
| Loss Contingency Accrual, Product Liability, Undiscounted, Fifth Year |
| us-gaap:LossContingencyAccrualProductLiabilityUndiscountedDueInFifthYear |
| Undiscounted amount of the accrual for damages arising from third-party use of the entity's product or process expected to be paid in the fifth fiscal year following the latest fiscal year. 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) |
| Credit |
| false |
| us-gaap:LossContingencyAccrualProductLiabilityUndiscountedDueInFifthYear |