| Standard label: | Demutualization by Insurance Entity, Securities Issued, Quantity of Shares |
| Name: | us-gaap:DemutualizationByInsuranceEntitySecuritiesIssuedQuantityOfShares |
| Documentation: | The number of shares or units issued in an insurance entity stock offering in connection with its conversion from a mutual form of ownership to a stock entity. |
| Object type: | cm:Concept |
| Data type: | Shares (xbrli:sharesItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DemutualizationByInsuranceEntitySecuritiesIssuedQuantityOfShares |
| Label | Role | Language |
| Demutualization by Insurance Entity, Securities Issued, Quantity of Shares | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 805 50 2 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |