| Standard label: | Liability, Premium Deficiency Testing on Long-Duration Contract, Amount |
| Name: | us-gaap:LiabilityPremiumDeficiencyTestingOnLongDurationContractAmount |
| Documentation: | Amount of liability from 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: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LiabilityPremiumDeficiencyTestingOnLongDurationContractAmount |
| Label | Role | Language |
| Liability, Premium Deficiency Testing on Long-Duration Contract, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 65 2 (g)(2)(iv) | http://www.xbrl.org/2003/role/disclosureRef | 944 |
| FASB Accounting Standards Codification 944 60 50 2 (a) | http://www.xbrl.org/2003/role/disclosureRef | 944 |