cm:Level3TextBlock: us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueTableTextBlock
Equity Securities without Readily Determinable Fair Value [Table Text Block] |
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueTableTextBlock |
Tabular disclosure of investment in equity security without readily determinable fair value. |
cm:Level3TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueTableTextBlock |