cm:Level3TextBlock: us-gaap:TradingSecuritiesAndCertainTradingAssetsTextBlock
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] |
us-gaap:TradingSecuritiesAndCertainTradingAssetsTextBlock |
Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). |
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(no balance type) |
false |
us-gaap:TradingSecuritiesAndCertainTradingAssetsTextBlock |
TradingSecuritiesAndOtherTradingAssets |