cm:Concept: us-gaap:BroadcastersLicenseAgreementCommitmentsDescription
| Broadcasters License Agreement Commitments, Description |
| us-gaap:BroadcastersLicenseAgreementCommitmentsDescription |
| A description of the commitments for license agreements that have been executed but were not reported because they do not meet the conditions for recording a liability. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:BroadcastersLicenseAgreementCommitmentsDescription |