| Standard label: | Dividend Payment Restrictions Schedule, Description |
| Name: | us-gaap:DividendPaymentRestrictionsScheduleDescription |
| Documentation: | Description of dividends paid, restrictions on dividend payments, statutory capital and surplus amounts, requirements and future requirements. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DividendPaymentRestrictionsScheduleDescription |
| Label | Role | Language |
| Dividend Payment Restrictions Schedule, Description | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 505 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |