cm:Concept: us-gaap:ReorganizationValueMethodologyAndAssumptions
| Reorganization Value, Methodology and Assumptions |
| us-gaap:ReorganizationValueMethodologyAndAssumptions |
| Description of methodology and assumptions (such as discount rates, tax rates, and number of years of for which cash flows are projected, as well as sensitivity of assumptions that would have significantly affected the value and assumptions about anticipated conditions at variance from current conditions that are not otherwise apparent) related to determination of reorganization value. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:ReorganizationValueMethodologyAndAssumptions |