cm:Concept: us-gaap:DescriptionOfLessorLeasingArrangementsOperatingLeases
| Description of Lessor Leasing Arrangements, Operating Leases |
| us-gaap:DescriptionOfLessorLeasingArrangementsOperatingLeases |
| A general description of the nature of the existing leasing arrangements of a lessor for all operating leases including, but not limited to: (1) guarantees or indemnities; (2) restrictions imposed by lease arrangements; (3) unusual provisions or conditions; (4) contingent rentals; and (5) lease expiration dates. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:DescriptionOfLessorLeasingArrangementsOperatingLeases |