cm:Concept: us-gaap:InvestmentCompanyForeignCurrencyTransactionAndTranslationPractice
| Investment Company, Foreign Currency Transaction and Translation Practice [true false] |
| us-gaap:InvestmentCompanyForeignCurrencyTransactionAndTranslationPractice |
| Indicates (true false) whether realized and unrealized gain (loss) of investment from foreign currency change is included with other foreign currency gain (loss). |
| cm:Concept |
| Yes/No (xbrli:booleanItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:InvestmentCompanyForeignCurrencyTransactionAndTranslationPractice |