Gain (Loss) on Investments, Excluding Other than Temporary Impairments [Abstract]

NameGainLossOnInvestmentsExcludingOtherThanTemporaryImpairmentsAbstract
Namespacehttp://fasb.org/us-gaap/2020-01-31
Prefixus-gaap
Data typexbrli:stringItemType
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AbstractTrue

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Gain (Loss) on Investments, Excluding Other than Temporary Impairments [Abstract]en-UShttp://www.xbrl.org/2003/role/labelhttp://www.xbrl.org/2003/role/link

Related Child Concepts

NameRelation TypeRole
us-gaap:MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairmentsAbstract
parent-childhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities
us-gaap:DebtAndEquitySecuritiesGainLossExcludingImpairmentLossAbstract
parent-childhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities
us-gaap:DebtAndEquitySecuritiesGainLossExcludingOtherThanTemporaryImpairmentLoss
parent-childhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities
us-gaap:DebtSecuritiesGainLossExcludingOttiAbstract
parent-childhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities
us-gaap:MarketableSecuritiesGainLossExcludingOtherThanTemporaryImpairmentsAbstract
domain-memberhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfGainLossOnInvestmentsTable
us-gaap:DebtAndEquitySecuritiesGainLossExcludingImpairmentLossAbstract
domain-memberhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfGainLossOnInvestmentsTable
us-gaap:DebtAndEquitySecuritiesGainLossExcludingOtherThanTemporaryImpairmentLoss
domain-memberhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfGainLossOnInvestmentsTable
us-gaap:DebtSecuritiesGainLossExcludingOttiAbstract
domain-memberhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfGainLossOnInvestmentsTable

Related Parent Concepts

NameRelation TypeRole
us-gaap:ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
parent-childhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities
us-gaap:ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
domain-memberhttp://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfGainLossOnInvestmentsTable