cm:Concept: us-gaap:MultiemployerPlansSurcharge
| Multiemployer Plans, Surcharge [Fixed List] |
| us-gaap:MultiemployerPlansSurcharge |
| Indicate whether the employer paid a surcharge to the pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. The acceptable values are "no", "yes", and "NA". |
| cm:Concept |
| us-types:surchargeItemType |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:MultiemployerPlansSurcharge |