cm:Concept: us-gaap:ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationFairValueAcquired
| Research and Development Asset Acquired Other than Through Business Combination, Fair Value Acquired |
| us-gaap:ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationFairValueAcquired |
| The fair value of capitalized costs of a research and development nature that were acquired during the period in a transaction other than a business combination. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Debit |
| false |
| us-gaap:ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationFairValueAcquired |