| Standard label: | Dividend Payments Restrictions Schedule, Statutory Capital and Surplus |
| Name: | us-gaap:DividendPaymentsRestrictionsScheduleStatutoryCapitalAndSurplus1 |
| Documentation: | Amount of statutory capital and surplus computed using prescribed or permitted statutory accounting practice. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DividendPaymentsRestrictionsScheduleStatutoryCapitalAndSurplus1 |
| Label | Role | Language |
| Dividend Payments Restrictions Schedule, Statutory Capital and Surplus | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 505 50 1 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |