cm:Concept: us-gaap:VariableInterestEntityTypeOfEntity
| Variable Interest Entity, Qualitative or Quantitative Information, Type of Entity |
| us-gaap:VariableInterestEntityTypeOfEntity |
| Structure or legal form of Variable Interest Entity (VIE). In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors that do not provide sufficient financial resources for the entity to support its activities. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:VariableInterestEntityTypeOfEntity |