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| Period type | duration |
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| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Investment Income [Table Text Block] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Tabular disclosure of investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
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| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities | |
us-gaap:ScheduleOfInvestmentIncomeReportedAmountsByCategoryTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:TableTextBlock | parent-child | http://fasb.org/us-gaap/role/disclosure/ComprehensiveTextBlockList | |
us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities | |
us-gaap:NetInvestmentIncomeInsuranceEntityAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |