| Standard label: | Operating Leases, Income Statement, Sublease Revenue |
| Name: | us-gaap:OperatingLeasesIncomeStatementSubleaseRevenue |
| Documentation: | The amount of revenue recognized for the period under subleasing arrangements. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:OperatingLeasesIncomeStatementSubleaseRevenue |
| Label | Role | Language |
| Operating Leases, Income Statement, Sublease Revenue | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 840 20 55 3 | http://fasb.org/us-gaap/role/ref/otherTransitionRef | 840 |