| Standard label: | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate |
| Name: | us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRate |
| Documentation: | Value above guaranteed minimum crediting rate on policyholder account balance. |
| Object type: | cm:Concept |
| Data type: | Decimal (xbrli:decimalItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRate |
| Label | Role | Language |
| Policyholder Account Balance, above Guaranteed Minimum Crediting Rate | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 55 29F | http://www.xbrl.org/2003/role/exampleRef | 944 |
| FASB Accounting Standards Codification 944 40 50 7A (d) | http://www.xbrl.org/2003/role/disclosureRef | 944 |