| Standard label: | Present Value of Future Insurance Profits, Accumulated Amortization |
| Name: | us-gaap:PresentValueOfFutureInsuranceProfitsAccumulatedAmortization |
| Documentation: | Amount of accumulated amortization of present value of future profits of insurance contract acquired in business combination. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PresentValueOfFutureInsuranceProfitsAccumulatedAmortization |
| Label | Role | Language |
| Present Value of Future Insurance Profits, Accumulated Amortization | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 350 30 50 2 (a)(1) | http://fasb.org/us-gaap/role/ref/legacyRef | 350 |
| FASB Accounting Standards Codification 944 805 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |