| Standard label: | Policyholder Account Balance, Weighted Average Crediting Rate |
| Name: | us-gaap:PolicyholderAccountBalanceWeightedAverageCreditingRate |
| Documentation: | Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time. |
| Object type: | cm:Concept |
| Data type: | Percent (num:percentItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PolicyholderAccountBalanceWeightedAverageCreditingRate |
| Label | Role | Language |
| Policyholder Account Balance, Weighted Average Crediting Rate | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 50 7A (b)(1) | http://www.xbrl.org/2003/role/disclosureRef | 944 |
| FASB Accounting Standards Codification 944 40 55 29F | http://www.xbrl.org/2003/role/exampleRef | 944 |