cm:Concept: us-gaap:OtherFootnotesDisclosingDerivativeRelatedInformationCrossReference
| Other Footnotes Disclosing Derivative-Related Information, Cross-Reference |
| us-gaap:OtherFootnotesDisclosingDerivativeRelatedInformationCrossReference |
| Cross-reference from the derivative footnote to other footnotes in which derivative-related information is disclosed. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:OtherFootnotesDisclosingDerivativeRelatedInformationCrossReference |