cm:Concept: us-gaap:InvestmentCompanyTotalReturnUnaffectedByRestrictedTransaction
| Investment Company, Total Return Unaffected by Restricted Transaction |
| us-gaap:InvestmentCompanyTotalReturnUnaffectedByRestrictedTransaction |
| Percentage, before gain (loss) on investment not meeting investment requirement, of increase (decrease) in value to net assets of a fund. |
| cm:Concept |
| Percent (num:percentItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:InvestmentCompanyTotalReturnUnaffectedByRestrictedTransaction |