| Standard label: | Dividends Payable, Amount Per Share | 
| Name: | us-gaap:DividendsPayableAmountPerShare | 
| Documentation: | The per share amount of a dividend declared, but not paid, as of the financial reporting date. | 
| Object type: | cm:Concept | 
| Data type: | Share (num:perShareItemType) | 
| Period type: | As Of (instant) | 
| Balance type: | (no balance type) | 
| Abstract: | false | 
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DividendsPayableAmountPerShare | 
| Label | Role | Language | 
| Dividends Payable, Amount Per Share | 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 |