| Standard label: | Material Nonrecurring Reinsurance Transactions |
| Name: | us-gaap:MaterialNonrecurringReinsuranceTransactions |
| Documentation: | Description of nature and effect of material, domestic nonrecurring reinsurance transactions, including contingent liabilities. |
| 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:MaterialNonrecurringReinsuranceTransactions |
| Label | Role | Language |
| Material Nonrecurring Reinsurance Transactions | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03.13(c)(2)) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |