cm:Concept: us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionDate
| Distribution Made to Limited Liability Company (LLC) Member, Distribution Date |
| us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionDate |
| Date of distribution for distribution of cash or unit to member of limited liability company (LLC), in CCYY-MM-DD format. |
| cm:Concept |
| Date (xbrli:dateItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:DistributionMadeToLimitedLiabilityCompanyLLCMemberDistributionDate |