| Standard label: | Artist Advances, Commitments, Amount |
| Name: | us-gaap:ArtistAdvancesCommitmentsAmount |
| Documentation: | The amount the entity has committed to make for future artist advances. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ArtistAdvancesCommitmentsAmount |
| Label | Role | Language |
| Artist Advances, Commitments, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 928 440 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 928 |