| Standard label: | Life Premiums as Percentage of Gross Premiums |
| Name: | us-gaap:LifePremiumsAsPercentageOfGrossPremiums |
| Documentation: | Ratio with total life insurance premiums in numerator and total GAAP premiums in the denominator. |
| Object type: | cm:Concept |
| Data type: | Percent (num:percentItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LifePremiumsAsPercentageOfGrossPremiums |
| Label | Role | Language |
| Life Premiums as Percentage of Gross Premiums | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 275 10 50 18 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 275 |