| Standard label: | Statutory Accounting Practices [Table] |
| Name: | us-gaap:StatutoryAccountingPracticesTable |
| Documentation: | Detail by state, country, or other jurisdiction of domicile in which financial statements are filed reflecting statutory capital and surplus, net income and the differences between financial reports which are in conformity with generally accepted accounting principles and the statutory financial statements which also use state permitted or prescribed accounting practices. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:StatutoryAccountingPracticesTable |
| Label | Role | Language |
| Statutory Accounting Practices [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03.23(c)) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 505 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 505 55 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 505 55 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 505 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 505 50 6 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |