| Standard label: | Present Value of Future Insurance Profits, Addition from Acquisition |
| Name: | us-gaap:PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions |
| Documentation: | Amount of addition for present value of future profits of insurance contract acquired in business combination. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions |
| Label | Role | Language |
| Present Value of Future Insurance Profits, Addition from Acquisition | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 20 S99 2 (2) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |