cm:Concept: us-gaap:LifeSettlementContractsFairValueMethodValuationMethod
| Life Settlement Contracts, Fair Value Method, Valuation Method |
| us-gaap:LifeSettlementContractsFairValueMethodValuationMethod |
| This item represents discussion of the method or methods and significant assumptions used to estimate the fair value of investments in life settlement contracts accounted for under the fair value method, including any mortality assumptions. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:LifeSettlementContractsFairValueMethodValuationMethod |