cm:Member: us-gaap:DistributionOfNonmonetaryAssetsToGroupsOfStockholdersPursuantToSettlementPlansMember
| Distribution of Nonmonetary Assets to Groups of Stockholders' Pursuant to Settlement Plans [Member] |
| us-gaap:DistributionOfNonmonetaryAssetsToGroupsOfStockholdersPursuantToSettlementPlansMember |
| The distribution of nonmonetary assets to groups of stockholders pursuant to plans of rescission or other settlements relating to a prior business combination or to redeem or acquire shares of capital stock from previous business combinations. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:DistributionOfNonmonetaryAssetsToGroupsOfStockholdersPursuantToSettlementPlansMember |