| Standard label: | Premium Deficiency Testing Expense, Long-Duration Contract, Amount |
| Name: | us-gaap:PremiumDeficiencyTestingExpenseLongDurationContractAmount |
| Documentation: | Amount of expense for premium deficiency and loss recognition testing on long-duration contract issued by insurance entity. Excludes closed block. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PremiumDeficiencyTestingExpenseLongDurationContractAmount |
| Label | Role | Language |
| Premium Deficiency Testing Expense, Long-Duration Contract, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 50 6 (a) | http://www.xbrl.org/2009/role/commonPracticeRef | 944 |