| Standard label: | Insurance Services Revenue |
| Name: | us-gaap:InsuranceServicesRevenue |
| Documentation: | Revenue from insurance services, including net premiums earned, gain on sale of insurance block, agency management fees and insurance contract fees and commissions. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:InsuranceServicesRevenue |
| Label | Role | Language |
| Insurance Services Revenue | http://www.xbrl.org/2003/role/label | en-US |
| Insurance Services Revenue, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 220 S99 1 (SX 210.7-04.1,4) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |