cm:Level3TextBlock: us-gaap:InvestmentHoldingsScheduleOfInvestmentsTableTextBlock
| Investment Holdings, Schedule of Investments [Table Text Block] |
| us-gaap:InvestmentHoldingsScheduleOfInvestmentsTableTextBlock |
| Tabular disclosure of data and information required in the supplementary schedule applicable to management investment companies listing holdings of unaffiliated investments. |
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| Text Block (HTML) (nonnum:textBlockItemType) |
| For Period (duration) |
| (no balance type) |
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| us-gaap:InvestmentHoldingsScheduleOfInvestmentsTableTextBlock |