| Standard label: | Cash Surrender Value, Change in Valuation Technique [true false] |
| Name: | us-gaap:CashSurrenderValueChangeInValuationTechnique |
| Documentation: | Indicates (true false) whether valuation technique or approach changed for measuring cash surrender value of insurance policy. |
| Object type: | cm:Concept |
| Data type: | Yes/No (xbrli:booleanItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CashSurrenderValueChangeInValuationTechnique |
| Label | Role | Language |
| Cash Surrender Value, Change in Valuation Technique [true false] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 820 10 50 2 (bbb)(1) | http://www.xbrl.org/2003/role/disclosureRef | 820 |