cm:Member: us-gaap:DistributionOfCapitalStockOfSubsidiariesToStockholdersInCorporateLiquidationsAndReorganizationsMember
| Distribution of Capital Stock of Subsidiaries to Stockholders in Corporate Liquidations and Reorganizations [Member] |
| us-gaap:DistributionOfCapitalStockOfSubsidiariesToStockholdersInCorporateLiquidationsAndReorganizationsMember |
| The distribution of nonmonetary assets such as capital stock of subsidiaries to stockholders in corporate liquidations or plans of reorganization that involve disposing of all or segments of the business. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:DistributionOfCapitalStockOfSubsidiariesToStockholdersInCorporateLiquidationsAndReorganizationsMember |