| Standard label: | Separate Account Asset |
| Name: | us-gaap:SeparateAccountAssets |
| Documentation: | Amount of asset at fair value held for benefit of separate account policyholder. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SeparateAccountAssets |
| Label | Role | Language |
| Separate Account Asset | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03(a)(11)) | http://www.xbrl.org/2003/role/disclosureRef | 944 |
| FASB Accounting Standards Codification 944 80 50 1 (e) | http://www.xbrl.org/2003/role/disclosureRef | 944 |
| FASB Accounting Standards Codification 944 80 45 2 | http://www.xbrl.org/2003/role/disclosureRef | 944 |
| FASB Accounting Standards Codification 944 80 55 17 | http://www.xbrl.org/2003/role/exampleRef | 944 |