| Standard label: | Deferred Revenue Arrangement, by Type [Table] |
| Name: | us-gaap:DeferredRevenueArrangementByTypeTable |
| Documentation: | Schedule of deferred revenue disclosure which includes the type of arrangements and the corresponding amount that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredRevenueArrangementByTypeTable |
| Label | Role | Language |
| Deferred Revenue Arrangement, by Type [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 45 8 (b) | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 210 |