cm:Level3TextBlock: us-gaap:OpenOptionContractsWrittenScheduleOfInvestmentsTextBlock
Open Option Contracts Written, Schedule of Investments [Table Text Block] |
us-gaap:OpenOptionContractsWrittenScheduleOfInvestmentsTextBlock |
Tabular disclosure of the information required in the supplementary schedule applicable to management investment companies listing written option contracts. |
cm:Level3TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
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(no balance type) |
false |
us-gaap:OpenOptionContractsWrittenScheduleOfInvestmentsTextBlock |