cm:Concept: us-gaap:ContractClaimsDescription
| Contract Claims Description |
| us-gaap:ContractClaimsDescription |
| Principal status associated with the amount of claims or other similar items subject to uncertainty concerning their determination or ultimate realization included in billed and unbilled accounts receivable inventory as of the balance sheet date (includes contingent assets). Information on revenue and costs arising from claims. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:ContractClaimsDescription |