| Standard label: | Property Subject to or Available for Operating Lease [Axis] |
| Name: | us-gaap:PropertySubjectToOrAvailableForOperatingLeaseAxis |
| Documentation: | Information by property that could be leased or is available for lease. |
| Object type: | cm:Axis |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PropertySubjectToOrAvailableForOperatingLeaseAxis |
| Label | Role | Language |
| Property Subject to or Available for Operating Lease [Axis] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 840 20 50 4 (a) | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 840 |