| Standard label: | Dividends Payable, Date Declared, Month and Year |
| Name: | us-gaap:DividendsPayableDateDeclaredMonthAndYear |
| Documentation: | The month and year (YYYY-MM) that the dividend to be paid was declared. |
| Object type: | cm:Concept |
| Data type: | Year/Month (xbrli:gYearMonthItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DividendsPayableDateDeclaredMonthAndYear |
| Label | Role | Language |
| Dividends Payable, Date Declared, Month and Year | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 230 |