cm:Concept: us-gaap:OtherLiabilitiesAndDeferredRevenueNoncurrent
| Other Liabilities and Deferred Revenue, Noncurrent |
| us-gaap:OtherLiabilitiesAndDeferredRevenueNoncurrent |
| Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations and noncurrent portion of deferred revenue not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Credit |
| false |
| us-gaap:OtherLiabilitiesAndDeferredRevenueNoncurrent |