MTG


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:ConsolidatedEntities

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:GainLossOnInvestments

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpenseDebt

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetInvestmentIncome

us-gaap:OtherIncome

us-gaap:PremiumsEarnedNet

us-gaap:Revenues

us-gaap:Assets
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:OtherAssets

us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities
us-gaap:CumulativeEffectPeriodOfAdoption

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:TreasuryStockValue
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:LongtermDebtType
us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities

mtg:AveragePaidClaimsReductionDueToCurtailments
us-gaap:ReinsurancePolicyType
mtg:CededPremiumsWrittenandEarnedNetofProfitCommission
us-gaap:FinancialInstrument
mtg:DebtSecuritiesAvailableforSaleImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedinNetRealizedInvestmentGainsLosses
us-gaap:LongtermDebtType
mtg:DilutiveSecuritiesReductionInPotentiallyDilutiveSharesDueToDebtExtinguishment
dei:LegalEntity
mtg:DividendDistributionOfInterestOfConvertibleJuniorSubordinatedDebentures
us-gaap:FairValueByAssetClass
mtg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsReportedAsLossIncurredNet

mtg:FederalHomeLoanBankAdvancesCollateralMarketValueOfPrincipalPercent

mtg:GainLossOnDebtExtinghuishmentCashPortion

mtg:IncreaseDecreaseInProfitCommissionReceivable

mtg:IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses

mtg:PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures

mtg:PaymentOfOriginalIssueDiscountSeniorNotes
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:ReinsurancePolicyType
mtg:PercentOfDelinquentReinsuredLoanstoTotalReinsuredLoans
us-gaap:ReinsurancePolicyType
mtg:ReinsuranceCedingCommissionEarned
us-gaap:ReinsurancePolicyType
mtg:ReinsuranceProfitCommission
us-gaap:ReinsurancePolicyType
mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsCedingCommissionPercent
us-gaap:ReinsurancePolicyType
mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsQuotaSharePercent

mtg:ReinsuranceTerminations
us-gaap:StatementEquityComponents
mtg:StockIssuedDuringPeriodValueTreasuryStockReissuedForShareBasedCompensation

mtg:UnderwritingAndOtherExpensesNet
us-gaap:LongtermDebtType
us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments
us-gaap:StatementEquityComponents

us-gaap:AssumedPremiumsEarned

us-gaap:AssumedPremiumsWritten

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
dei:LegalEntity, us-gaap:SubsequentEventType
us-gaap:CashDividendsPaidToParentCompany

us-gaap:CededPremiumsEarned
us-gaap:ReinsurancePolicyType

us-gaap:CededPremiumsWritten

us-gaap:CommonStockDividendsPerShareCashPaid
us-gaap:SubsequentEventType
us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType, us-gaap:SubsequentEventType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DepreciationAmortizationAndAccretionNet
us-gaap:LongtermDebtType
us-gaap:DilutiveSecurities

us-gaap:DirectPremiumsEarned

us-gaap:DirectPremiumsWritten
us-gaap:StatementEquityComponents
us-gaap:DividendsCash

us-gaap:EarlyRepaymentOfSeniorDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:EarlyRepaymentOfSubordinatedDebt

us-gaap:EquitySecuritiesFvNiUnrealizedGain

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ExtinguishmentOfDebtAmount
us-gaap:LongtermDebtType
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:IncreaseDecreaseInAccruedInvestmentIncomeReceivable

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve
us-gaap:NoncatastrophicEvent

us-gaap:IncreaseDecreaseInOtherInsuranceLiabilities

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncreaseDecreaseInUnearnedPremiumsNet
us-gaap:LongtermDebtType
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncurredClaimsPropertyCasualtyAndLiability

us-gaap:InterestPaid

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
us-gaap:ReinsurancePolicyType
us-gaap:LossRatio

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTax
us-gaap:StatementEquityComponents

us-gaap:OtherUnderwritingExpense

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PolicyholderBenefitsAndClaimsIncurredGross

us-gaap:PremiumsEarnedNetPropertyAndCasualty

us-gaap:PremiumsWrittenNet
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments
us-gaap:FinancialInstrument
us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded
us-gaap:ReinsurancePolicyType
dei:LegalEntity
us-gaap:ReinsuranceRetentionPolicyAmountRetained
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:NoncatastrophicEvent
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:LongtermDebtType
us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
dei:LegalEntity
mtg:AmountOfPolicyholdersPositionAboveOrBelowRequiredRegulatoryMinimum
dei:LegalEntity
mtg:AmountOfRequiredMpp

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue

mtg:ContingencyReserve
us-gaap:LongtermDebtType
mtg:DebtInstrumentConvertibleConversionPrice2

mtg:DeferredTaxAssetsLiabilitiesNetOther

mtg:DeferredTaxAssetsLiabilitiesNetOtherComprehensiveIncome

mtg:DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits

mtg:DefinedBenefitPlanMinimumValueOfOutstandingNoncallableBondsUsedInHypotheticalCashFlowBondMatchingExercise

mtg:DirectDomesticPrimaryInsuranceInForce

mtg:DirectDomesticPrimaryRiskInForce
us-gaap:ConsolidatedEntities
mtg:InvestmentInSubsidiariesAtEquityInNetAssets

mtg:MaximumExposureAssociatedWithOtherDiscussionsLegalProceedings
us-gaap:LongtermDebtType
mtg:MaximumNumberOfSharesOfCommonStockIssuableUnderAlternativePaymentMechanism

mtg:PercentageBackedByUsGovernment

mtg:PercentageOfFairValueToAmortizedCostSecuritiesinUnrealizedLossPosition
us-gaap:RetirementPlanType
mtg:PercentofinternationalmutualfundsequityallocationincompaniesprimarilybasedinEuropeandPacificBasin
us-gaap:RetirementPlanType
mtg:Percentofinternationalmutualfundsequityallocationinemergingmarkets

mtg:PremiumRefundLiabilityExpectedClaimPayments

mtg:PrimaryDefaultInventoryFourToElevenMonthsPercentage

mtg:PrimaryDefaultInventoryPercentage

mtg:PrimaryDefaultInventoryPercentofDefaultInventorySubjectToCovid19ForbearancePlan

mtg:PrimaryDefaultInventoryThreeMonthsOrLessPercentage

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentage

mtg:RealEstateAssetsAcquiredFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
dei:LegalEntity
mtg:ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages
dei:LegalEntity, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
mtg:SeniorNotesFairValueDisclosure
us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
dei:LegalEntity
mtg:StatutoryCapitalRequirementsRiskToCapitalRatio

mtg:StatutoryCapitalRequirementsRiskToCapitalRatioForCombinedInsuranceOperations

mtg:TaxAndLossBondsHeld

us-gaap:AccruedInvestmentIncomeReceivable
us-gaap:ConsolidatedEntities

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AssetsHeldInTrust
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:ConsolidatedEntities
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:ConvertibleSubordinatedDebt
us-gaap:ConsolidatedEntities

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
us-gaap:NewAccountingPronouncementEarlyAdoption, us-gaap:StatementEquityComponents
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentConvertibleConversionPrice1
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxLiabilities
us-gaap:ConsolidatedEntities
us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:ConsolidatedEntities
us-gaap:DueFromRelatedParties
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquitySecuritiesFvNiCost
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FederalHomeLoanBankAdvances

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
us-gaap:ConsolidatedEntities
us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:Investments

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:LossContingencyAccrualAtCarryingValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:NotesPayableFairValueDisclosure

us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:OtherInvestments

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
us-gaap:ReinsurancePolicyType

us-gaap:ReinsuranceRecoverablesOnPaidLosses

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:SeniorNotes
us-gaap:ConsolidatedEntities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
dei:LegalEntity

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:TreasuryStockShares
us-gaap:ConsolidatedEntities

us-gaap:UnearnedPremiums
dei:LegalEntity
us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssets

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense Debt
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Property Plant And Equipment Net
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Other Liabilities
Noncurrent Liabilities
Long Term Debt
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Treasury Stock Shares
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████████████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.348371.348370.567370.562370.557360.171359.4359.395341.076341.076340.097340.091340.079340.079340.047340.047340.047340.047340.047340.047340.047340.047205.047205.047205.047205.047205.047205.047205.047205.047205.047NANANA
us-gaap:CommonStockSharesIssued ██████████████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.348371.348370.567370.562370.557360.171359.4359.395341.076341.076340.097340.091340.079340.079340.047340.047340.047340.047340.047340.047340.047340.047205.047205.047205.047205.047205.047205.04678205.04678205.04678205.04678NANANA
us-gaap:CommonStockSharesOutstanding ▇▇▇▇▇▇▇▇▇▇▇██████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁339.316339.316338.573338.567338.567338.567347.308348.709354.177355.986355.371362.155362.15371.348370.567370.562370.557341.434340.663345.474340.636340.636339.657339.651339.639339.639338.56338.56338.56338.516337.758337.758337.758337.758202.032202.032202.032202.03201.172201.171528201.146648201.142536200.449588NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁356.536356.383NA357.195339.661365.216NA372.575376.603376.667NA382.905388.881391.562NA391.087394.47402.175NA406.05446.139431.365NA468.149439.148468.141NA413.576413.481413.18NA339.426339.341232.348NA202.014202.013201.528NA201.109201.0970.200744NA200.077182.1560.124889
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁339.326338.904NA338.598338.593344.053NA351.475355.734355.653NA362.18368.578370.908NA370.586366.918341.009NA349.376340.678340.144NA339.701339.705339.107NA338.626338.626338.213NA337.868337.868232.348NA202.014202.013201.528NA201.109201.097200.744NA200.077181.267NA
us-gaap:EarningsPerShareBasic ▅▅▅▅▄▅▅▅▅▅▅▅▅▅▄▅▅▅▅▄▅▄▅█▅▅▄▄▄▄▄▄▄▄▁▂▂▄▃▃▃▄▃▄▄▂0.450.440.450.390.040.440.510.50.470.430.440.50.510.390.070.320.320.260.310.160.320.20.32.420.330.390.220.210.130.180.00.040.04-0.31-1.91-1.22-1.36-0.1-0.67-0.82-0.75-0.17-0.93-0.260.14-1.2
us-gaap:EarningsPerShareDiluted ▅▅▅▅▅▅▆▆▅▅▅▆▆▅▅▅▅▅▅▅▅▅▅█▅▅▅▅▅▅▅▅▅▄▁▂▂▄▃▃▃▄▃▄▅▂0.440.430.440.380.040.420.490.490.460.420.430.490.490.380.070.320.310.240.280.140.260.170.241.780.280.320.190.180.120.150.00.040.04-0.31-1.91-1.22-1.36-0.1-0.67-0.82-0.75-0.17-0.93-0.260.13-1.2
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:BenefitsLossesAndExpenses ▂▂▂▂▃▂▂▂▂▂▂▁▁▂▁▂▂▂▂▃▂▂▂▂▂▂▂▂▃▂▃▃▃▄█▆▆▅▆▆▆▄▆▅▄▆103.984108.34112.069131.675277.485118.65488.91795.26381.106100.71490.92458.55144.47885.74526.04685.89382.69686.923104.482190.10198.295154.891148.924142.263128.153133.754165.255162.849184.596174.374252.117241.999250.495340.976755.128556.133597.872397.875546.183528.504528.886385.005509.411459.999388.607521.908
us-gaap:ComprehensiveIncomeNetOfTax ▄▄▄▄▄▄▄▄▅▅▄▄▄▄▄▄▄▄▃▄▄▄▄█▄▄▄▄▄▄▄▄▃▃▁▂▂▃▂▃▃▃▂▃▄198.76856.765200.474153.176158.23578.321186.036209.906240.081234.662162.463170.263177.2879.67820.05131.424144.229101.7972.23241.933165.397118.73584.685907.84550.006149.92549.86350.49488.6399.34740.13721.276-98.256-82.568-473.227-201.346-266.403-64.39-194.563-126.789-98.204-58.348-317.7597.37138.935NA
us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense ▄▄▆▅▄▃▆▅▄▃▅▅▄▃▅▄▃▃▄▃▃▂▃▃▂▂▃▂▂▁█▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂3.0252.6963.6833.2782.9092.513.6213.1422.762.4783.3593.1562.8452.5723.3122.9852.5842.232.8652.5752.2451.9612.5982.3682.0461.7572.4272.0961.6761.4194.782.2091.9551.6971.9081.9391.9351.671.671.7621.7231.7251.8191.751.771.723
us-gaap:GainLossOnInvestments ▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▁▁▁▁▃▁▁▁▁▁▁▁▁█▂▃2.1732.2152.9012.2596.7011.8911.324.2050.307-0.526-0.2411.114-1.897-0.3290.46-0.047-0.042-0.122-0.0525.0920.8363.0561.2280.640.16626.3270.4340.6320.522-0.2312.126-0.1392.4851.25985.3926.18426.272NANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt NANA0.0-26.736NANANANANANA0.00.00.0NA0.00.0-0.0650.00.0-75.223-1.868-13.44-0.5070.00.00.0NANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType mtg:FivePointSevenFivePercentSeniorNotes,us-gaap:SeniorNotesNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType us-gaap:ConvertibleSubordinatedDebtNANANA10.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▁193.868189.617NANA16.483188.239NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments NANA190.212164.32916.483188.239222.71223.12211.211190.936194.709231.894237.522180.025245.456184.467180.616173.957162.03883.749165.239103.688109.002127.248114.976136.46175.10972.26646.6460.708-0.17612.4513.365-71.791-383.756-249.914-276.782-18.192-99.193-191.335-161.879-31.892-148.336-77.67417.748-151.138
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome▄▅▁▇▁▅▄▄▄▂▃▃▂▃▄▄▃▄▄▆▄▄▄▄▄█▄▄▄1.6382.835-6.7749.013-7.6653.32-0.180.748-0.26-4.768-1.316-3.125-4.112-0.7160.212-0.201-1.172-0.5130.6195.6180.3641.0861.648-0.5740.86911.9340.6410.8920.084NANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▅▅▆█▁▆▄▅▄▃▃▃▂▄2.4773.945.18910.349-6.394.7141.8432.7721.701-2.679-0.758-2.567-3.621-0.091NANANANA0.2495.2480.0980.6121.102-1.120.47711.234-1.091-0.84-1.896NANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▇▇▇▇▆▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▆▁▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▆▆▆▇▆▆▆40.81739.59638.78233.5182.43638.43445.59946.18643.43338.99536.96349.99450.70836.388218.14264.4461.99484.15954.55127.13156.01834.4976.584-695.6041.3223.3850.6810.2491.1180.7261.2310.3360.991.1392.935-2.972-2.8911.36336.101-26.13-10.1471.76938.331-26.146-6.803-1.047
us-gaap:InterestExpenseDebt ▄▄▄▃▁▁▁▁▂▁▁▁▁▁▁▁▂▃▃▂▁▂▃▃▃▃▃▃▃▄▄▄▄█▇▇▇▇▇█████▇▅17.99717.98518.01515.72512.92912.92612.93412.93913.5513.23313.25613.25813.24613.23313.25613.27314.19716.30916.19113.53612.24414.70116.83517.36217.37317.36217.37417.36117.37417.53917.66217.65317.94226.40625.32724.47824.91224.62725.14225.76126.32626.04225.7726.70225.09921.018
us-gaap:NetIncomeLoss ▄▄▄▄▃▄▄▄▄▄▄▄▄▄▃▄▄▄▄▄▄▄▄█▄▄▄▄▄▄▃▃▃▃▁▂▂▃▂▂▂▃▂▃▃▂153.051150.021151.43130.81114.047149.805177.11176.934167.778151.941157.746181.9186.814143.63727.314120.027118.62289.798107.48756.618109.22169.191102.418822.852113.654133.07674.42872.01745.52259.982-1.40712.11412.375-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661-186.667-51.52824.551-150.091
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▂▂▂▂▁▂▂▂▂▂▂▂▃▂▁▂▂▂▂▁▂▂▂█▂▂▂▂▁▁156.763153.733155.141134.97214.047154.371181.676181.5172.344156.507162.312186.466191.38148.20331.071123.784122.8995.66125.48558.615116.68873.851113.174833.581121.395149.58277.47775.06648.57163.031NANANANANANANANANANANANANANANANA
us-gaap:NetInvestmentIncome ▄▄▃▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▃▃▄▄▅▆▆▆▇▇█41.12937.89336.11837.25239.67941.34741.32242.71542.42340.58538.32836.3834.50232.12131.27630.40229.71629.47728.09427.51527.24827.80927.92625.93925.75624.1223.95622.35521.1820.15621.27820.2520.88318.32821.6630.39432.17837.40840.33948.89855.4956.54357.06158.46562.86868.859
us-gaap:OtherIncome ▂▂▁▁▂▂▂▂▂▁▁▂▂▁▂▂▂▂▂▂▂▃▂▂▂▂▂▂▁▁▁▂▂▂▂▂▆▂█▁▂▁▂▂▂▂3.0112.8041.8950.384.0262.7542.7173.6062.4851.831.8812.5252.4311.8712.3412.9222.5022.4223.4253.8673.9946.3732.583.6983.6992.482.3853.0932.0480.8962.1792.4812.7152.5392.6153.20920.0122.30926.8422.0255.3292.2633.082.842.6113.057
us-gaap:PremiumsEarnedNet 251.539NANANA243.562NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▃▃▃▃▃▃▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▂▂▂▂▆▃▄▆█▄▅▅▅▆▇▆297.852297.957302.281296.004293.968306.893311.627318.383292.317291.65285.633290.445282.0265.77271.502270.36263.312260.88266.52273.85263.534258.579257.926269.511243.129270.215240.364235.115231.236235.082251.941254.449263.86269.185371.372306.219321.09379.683446.99337.169367.007353.113361.075382.325406.355370.77
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ▅▅▅▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▂▂▂▃▂▂▃▄▄▅▆▇█7575.7277407.0167354.5267149.516574.5886155.2876229.5716146.7516055.5375870.0975677.8025657.1085592.0165616.3435619.4995675.8685600.1685903.8885734.5295873.0495744.7865773.4035879.5456008.155246.7825282.7325266.4345339.3785379.1445464.9955601.395857.5386043.5136508.4985574.3246008.896318.6366812.1147216.237747.3038269.7368847.9729333.642NANANA
us-gaap:Liabilities ▂▂▂▂▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▃▃▃▄▄▄▄▄▄▅▅▅▆▅▅▅▆▆▆▇▇█2661.022674.7232655.542635.8882191.2331913.4591920.3371987.1342019.8722053.9142095.9112167.5772278.1412384.942464.9732545.7192605.1073256.3573185.6873289.973233.1073430.0043643.4053859.6314008.4984097.1724229.5314354.874447.5294624.284856.8525154.4925362.8515730.8165377.3845340.9145451.4135680.5626019.4156358.4786756.8767239.6657664.587NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▅▅▅▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▂▂▂▃▂▂▃▄▄▅▆▇█7575.7277407.0167354.5267149.516574.5886155.2876229.5716146.7516055.5375870.0975677.8025657.1085592.0165616.3435619.4995675.8685600.1685903.8885734.5295873.0495744.7865773.4035879.5456008.155246.7825282.7325266.4345339.3785379.1445464.9955601.395857.5386043.5136508.4985574.3246008.896318.6366812.1147216.237747.3038269.7368847.9729333.642NANANA
us-gaap:StockholdersEquity ███▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▅▄▄▄▄▃▂▂▂▂▂▂▂▂▂▁▂▂▂▂▃▃▃▃4914.7074732.2934698.9864513.6224383.3554241.8284309.2344159.6174035.6653816.1833581.8913489.5313313.8753231.4033154.5263130.1492995.0612647.5312548.8422583.0792511.6792343.3992236.142148.5191238.2841185.561036.903984.508931.615840.715744.538703.046680.662777.682196.94667.976867.2231131.5521196.8151388.8251512.861608.3071669.055NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▁▂▂▂▂▁▁▁▁▁▂▁▁▁▁▁▂▁▂▂▁▁▂▁▁▁▁▂▂▂▂▂▆▄▃▂▃▄▃▄▄▅▇█▃178.635182.93287.953380.055366.715365.303161.847165.425218.908259.351151.892266.997191.894177.48899.851250.701127.908427.074155.41274.743300.974249.898181.12384.536215.77232.623197.882243.922342.6296.887332.692458.07571.4641635.811027.625730.404563.145902.606995.799866.6141038.5681112.3341304.1542166.1012395.568818.123
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▃▆███▃▃▄▅▂▅▃▃▁190.953192.766296.68388.81371.393369.526169.056171.754225.183262.512155.038266.997191.894177.48899.851NANANA155.41NANANA181.12NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA51.2NANANA43.0NANANA38.1NANANA33.9NANANA30.6NANANA26.1NANANA54.9NANANA53.0NANANA51.3NANANA65.2NANANA62.9NANANA
us-gaap:PropertyPlantAndEquipmentNet ▆▆▇▇▇▇██████▇▇▆▆▅▄▄▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▂▂▂▂▂45.47746.02447.14447.54647.73849.0150.12150.5451.60750.38851.73450.05549.46148.38244.93643.15742.21238.31436.08832.00930.831.04730.09529.26528.92528.56528.69328.58328.33628.6526.18526.41126.56626.86327.1926.89127.2927.5928.14528.52728.96228.88328.638NANANA
us-gaap:EquitySecuritiesFvNi ▄▄▅▅▅█▅▅▁15.45315.31918.21518.0617.95328.89217.32817.364.114NA3.932NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt ▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁█▆▆▄▅▇████1244.21243.71243.21242.7833.3833.1832.7832.5832.2831.9831.6831.3831.0830.7830.4830.1829.91329.41178.71178.01048.21097.51223.01296.41296.41296.41296.4NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA0.687NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA0.311NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA0.081NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ███▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▅▄▄▄▄▃▂▂▂▂▂▂▂▂▂▁▂▂▂▂▃▃▃▃4914.7074732.2934698.9864513.6224383.3554241.8284309.2344159.6174035.6653816.1833581.8913489.5313313.8753231.4033154.5263130.1492995.0612647.5312548.8422583.0792511.6792343.3992236.142148.5191238.2841185.561036.903984.508931.615840.715744.538703.046680.662777.682196.94667.976867.2231131.5521196.8151388.8251512.861608.3071669.055NANANA
us-gaap:CommonStockValue ██████████████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.353371.348371.348370.567370.562370.557360.171359.4359.395341.076341.076340.097340.091340.079340.079340.047340.047340.047340.047340.047340.047340.047340.047205.047205.047205.047205.047205.047205.047205.047205.047205.047NANANA
 us-gaap:AdditionalPaidInCapital us-gaap:CumulativeEffectPeriodOfAdoption srt:CumulativeEffectPeriodOfAdoptionAdjustmentNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock ▇▇███████████████▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁1786.261782.0411862.0421856.571859.1951855.3711869.7191864.9731860.5781856.2361862.5361857.6391852.2511847.01850.5821846.261842.6011778.3051782.3371779.9111660.6661657.7831670.2381667.3071664.9311662.2111663.5921661.0611658.6611657.361661.2691659.9141658.8051657.5671135.2961133.1071131.0081129.0241135.8211133.271131.5571129.0241138.942NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▇▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▂▂▁▁▁▁▁▁▁▁▁▂▂▃▃▃▃▄▄2972.3622839.8842642.0962511.2482400.822407.3052278.652122.7051966.9941799.2161647.2751489.5291307.6291120.815977.16939.424819.397722.515632.564525.077468.459359.238290.047187.63-635.224-748.876-852.458-926.887-998.903-1044.426-1074.617-1073.21-1085.323-1097.696-990.281-603.592-356.65-82.759-11.635123.657288.865440.596525.562NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▆█▇▇▄▅▅▅▃▂▂▂▂▃▄▃▃▃▅▅▄▃▃▂▃▃▃▃▃▂▁▁▃▃▅▄▄▅▆▅▄▄▄169.282123.565216.821167.777145.4121.22472.70863.78230.81-41.493-124.214-128.931-117.294-107.76-43.783-26.097-37.494-63.101-75.130.15544.84-11.336-60.88-43.147-128.14-64.492-81.341-56.776-35.253-78.361-117.726-159.27-168.432-57.801-48.16338.373-7.223-14.71130.12489.39350.977-2.55122.13622.1NANA
us-gaap:TreasuryStockValue ██████▅▅▃▃▃▁▁384.55384.55393.326393.326393.425393.425283.196263.196194.07169.129175.059100.059100.059NA0.00.00.0150.359150.359111.4593.3623.3623.3623.3623.3623.36232.93732.93732.93733.90564.43564.43564.43564.435104.959104.959104.959105.049162.542162.542163.586163.809222.632NANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▇▆█▁▆▆▇▇▇█▇███▆▆▅▅▄▄▅▅▅▅▄▅▄▄▄▃▃▂▃▃▄▄▄▃▄▄▄▅4.5673.6855.4720.1883.8244.3194.7464.5284.3425.2824.8975.4515.2515.2724.3173.7233.3943.4612.622.7362.8883.1292.962.9582.723.2642.5312.42.2691.8031.3551.1661.3881.6212.1892.0992.0771.8592.5512.7562.7683.381NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▇█▃█▆▅▆▄▅▅▄▄▄▅▄▁▂▂▃151.389198.033223.45688.728235.801184.324151.369176.552116.73164.881160.97120.954128.627133.966150.301130.848.08777.46975.77493.993NANANANANANANA-59.307-123.43-158.927-278.915-183.997-256.91-251.709-396.078-318.414-430.493-423.615-467.85-438.539-556.529-420.933-422.022-269.61713.258-197.049
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▃▃▁▄█▅▄▅▆▄▆▆▅▃▆▅▇▄▄-132.843-274.499-294.447-430.593-213.619166.153-113.142-139.733-129.118-40.115-209.569-45.793-14.162-48.256-301.112-7.948-47.02152.44-139.365-215.07NANANANANANANA-39.371169.143144.889153.53770.732-790.078-288.318693.299485.673144.139330.422646.578343.994534.532229.113-438.92540.151457.437-170.567
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▄█▄▃▄▃▄▄▄▄▃▄▄▄▁▆▄▅-20.359-27.448-21.139359.282-20.315-150.007-40.925-90.248-24.941-17.292-63.36-0.058-100.059-8.073-0.039-0.059-300.232141.755-55.74294.846NANANANANANANA0.00.0-21.7670.0-0.129-17.3581148.2120.00.0-53.1070.0-49.543-77.409-51.7690.0-1.0-0.0011106.750.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▁▇▇▇▇4.2282.635-0.18313.593-1.04315.8774.2320.585-0.7127.75540.20152.96953.0439.388186.42759.08757.23148.93249.46623.03454.88733.2711.525-698.164-0.002-0.011-0.3350.093NANANANANANANANANANA35.296-24.271-11.945-0.02538.077-25.564-9.442-3.146
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▂▅▁▄▁▅▂▃▂▅▃▁▄▄▂▃▄▅▃▁▅▃▃█▂▂-16.86114.461-25.1255.263-21.98819.934-17.035-3.428-18.77414.446-1.547-21.7812.9715.619-11.488-4.971.4912.715-3.77-22.29813.932-0.869-1.10245.801-13.238-14.691NANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▇█▃█▆▅▆▄▅▅▄▄▄▅▄▁▂▂▃151.389198.033223.45688.728235.801184.324151.369176.552116.73164.881160.97120.954128.627133.966150.301130.848.08777.46975.77493.993NANANANANANANA-59.307-123.43-158.927-278.915-183.997-256.91-251.709-396.078-318.414-430.493-423.615-467.85-438.539-556.529-420.933-422.022-269.61713.258-197.049
us-gaap:NetIncomeLoss ▄▄▄▄▃▄▄▄▄▄▄▄▄▄▃▄▄▄▄▄▄▄▄█▄▄▄▄▄▄▃▃▃▃▁▂▂▃▂▂▂▃▂▃▃▂153.051150.021151.43130.81114.047149.805177.11176.934167.778151.941157.746181.9186.814143.63727.314120.027118.62289.798107.48756.618109.22169.191102.418822.852113.654133.07674.42872.01745.52259.982-1.40712.11412.375-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661-186.667-51.52824.551-150.091
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▃▃▁▄█▅▄▅▆▄▆▆▅▃▆▅▇▄▄-132.843-274.499-294.447-430.593-213.619166.153-113.142-139.733-129.118-40.115-209.569-45.793-14.162-48.256-301.112-7.948-47.02152.44-139.365-215.07NANANANANANANA-39.371169.143144.889153.53770.732-790.078-288.318693.299485.673144.139330.422646.578343.994534.532229.113-438.92540.151457.437-170.567
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▁▂▂▁▁▃▂▄▁▅▄▅▇▆▄█▆█▄▂▃▃▂▂▁▂0.9640.4411.0971.2720.3620.581.5570.7992.9720.3083.5792.4033.0485.2083.9452.4625.6454.0145.5832.2450.8081.9161.7951.1241.1350.5760.709NANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquireInvestments ▃▅▅█▅▂▂▂▂▂▃▄▂▁▄▁445.09652.328642.6861001.564712.108280.614351.123365.612328.645348.746384.624558.137307.215209.497518.652229.724NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▄█▄▃▄▃▄▄▄▄▃▄▄▄▁▆▄▅-20.359-27.448-21.139359.282-20.315-150.007-40.925-90.248-24.941-17.292-63.36-0.058-100.059-8.073-0.039-0.059-300.232141.755-55.74294.846NANANANANANANA0.00.0-21.7670.0-0.129-17.3581148.2120.00.0-53.1070.0-49.543-77.409-51.7690.0-1.0-0.0011106.750.0
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.0NANANANANANANANANANANA0.00.00.00.00.0418.0940.0155.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:LongtermDebtType us-gaap:ConvertibleSubordinatedDebtNANANA61.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ████████▁▁▁20.35920.82720.31620.31920.31521.11120.92520.9890.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.0119.99720.069.18524.94111.6463.360.0100.0590.00.00.0NANA55.53NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value371371371371371371371371371371371371371371370370370360359359341341340340340340340340340340340340340340205205205205205205205205205130
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.95.05.05.25.66.06.06.06.16.36.56.66.66.66.66.56.66.16.36.15.95.95.85.76.56.46.56.46.36.26.15.85.65.23.73.43.23.02.82.62.52.32.21.4

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value371371371371371371371371371371371371371371370370370360359359341341340340340340340340340340340340340340205205205205205205205205205130
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value339339338338338338347348354355355362362371370370370341340345340340339339339339338338338338337337337337202202202202201201201201200125
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-31
Value338347355
Percentage of CommonStockSharesOutstanding100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value3563563573393653723763763823883913913944024064464314684394684134134133393392322022022012012010.2007442001820.124889
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value339338338338344351355355362368370370366341349340340339339339338338338337337232202202201201201200200181
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.450.440.450.390.040.440.510.50.470.430.440.50.510.390.070.320.320.260.310.160.320.20.32.420.330.390.220.210.130.1800.040.04-0.31-1.91-1.22-1.36-0.1-0.67-0.82-0.75-0.17-0.93-0.260.14-1.2
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.440.430.440.380.040.420.490.490.460.420.430.490.490.380.070.320.310.240.280.140.260.170.241.780.280.320.190.180.120.1500.040.04-0.31-1.91-1.22-1.36-0.1-0.67-0.82-0.75-0.17-0.93-0.260.13-1.2
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value103108112131277118889581100905844852685828610419098154148142128133165162184174252241250340755556597397546528528385509459388521
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues34.936.437.144.594.438.728.529.927.734.531.820.215.832.39.631.831.433.339.269.437.359.957.752.852.749.568.869.379.874.2100.195.194.9126.7203.3181.6186.2104.8122.2156.7144.1109.0141.1120.395.6140.8

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value198562001531587818620924023416217017779201311441012.232411651188490750149495088994021-98.256-82.568-473.227-201.346-266.403-64.39-194.563-126.789-98.204-58.348-317.7597.37138
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues66.719.166.351.753.825.559.765.982.180.556.958.662.930.07.448.654.839.00.815.362.845.932.8336.820.655.520.721.538.342.315.98.4-37.2-30.7-127.4-65.8-83.0-17.0-43.5-37.6-26.8-16.5-88.01.99.6

Deferred Policy Acquisition Cost Amortization Expense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.0252.6963.6833.2782.9092.513.6213.1422.762.4783.3593.1562.8452.5723.3122.9852.5842.232.8652.5752.2451.9612.5982.3682.0461.7572.4272.0961.6761.4194.782.2091.9551.6971.9081.9391.9351.671.671.7621.7231.7251.8191.751.771.723
Percentage of DeferredPolicyAcquisitionCostAmortizationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.00.91.21.11.00.81.21.00.90.81.21.11.01.01.21.11.00.91.10.90.90.81.00.90.80.71.00.90.70.61.90.90.70.60.50.60.60.40.40.50.50.50.50.50.40.5

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2.1732.2152.9012.2596.7011.8911.324.2050.307-0.526-0.2411.114-1.897-0.3290.46-0.047-0.042-0.122-0.0525.0920.8363.0561.2280.640.166260.4340.6320.522-0.2312.126-0.1392.4851.259856.18426
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.71.00.82.30.60.41.30.1-0.2-0.10.4-0.7-0.10.2-0.0-0.0-0.0-0.01.90.31.20.50.20.19.70.20.30.2-0.10.8-0.10.90.523.02.08.2

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2020-12-312020-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0-26.7360.00.00.00.00.0-0.0650.00.0-75.223-1.868-13.44-0.5070.00.00.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0100.00.00.00.00.00.0100.00.00.0100.0100.0100.0100.00.00.00.0
Percentage of Revenues0.0-9.00.00.00.00.00.0-0.00.00.0-27.5-0.7-5.2-0.20.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:SeniorNotes


Gains
Period End2020-08-31
Value16
Percentage of GainsLossesOnExtinguishmentOfDebt0.0
Percentage of Revenues0.0
Percentage of Revenues mtg:FivePointSevenFivePercentSeniorNotes us-gaap:SeniorNotes0.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType

us-gaap:ConvertibleSubordinatedDebt


Gains
Period End2020-09-302016-02-29
Value10-8.3
Percentage of GainsLossesOnExtinguishmentOfDebt-38.20.0
Percentage of Revenues3.40.0
Percentage of Revenues us-gaap:ConvertibleSubordinatedDebt0.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value19318916188
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0
Percentage of Revenues65.163.65.661.3

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value190164161882222232111901942312371802451841801731628316510310912711413675724660-0.1761213-71.791-383.756-249.914-276.782-18.192-99.193-191.335-161.879-31.892-148.336-77.67417-151.138
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues62.955.55.661.371.570.172.365.568.279.884.267.790.468.268.666.760.830.662.740.142.347.247.350.531.230.720.225.8-0.14.95.1-26.7-103.3-81.6-86.2-4.8-22.2-56.7-44.1-9.0-41.1-20.34.4-40.8

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.6382.835-6.7749.013-7.6653.32-0.180.748-0.26-4.768-1.316-3.125-4.112-0.7160.212-0.201-1.172-0.5130.6195.6180.3641.0861.648-0.5740.869110.6410.8920.084
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments0.00.0-3.65.5-46.51.8-0.10.3-0.1-2.5-0.7-1.3-1.7-0.40.1-0.1-0.6-0.30.46.70.21.01.5-0.50.88.70.91.20.2
Percentage of Revenues0.51.0-2.23.0-2.61.1-0.10.2-0.1-1.6-0.5-1.1-1.5-0.30.1-0.1-0.4-0.20.22.10.10.40.6-0.20.44.40.30.40.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-0.839-1.105-11.963-1.336-1.275-1.394-2.023-2.024-1.961-2.089-0.558-0.558-0.491-0.6250.370.370.2660.4740.5460.5460.3920.71.7321.7321.98
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments0.00.0-6.3-0.8-7.7-0.7-0.9-0.9-0.9-1.1-0.3-0.2-0.2-0.30.20.40.20.50.50.40.30.52.32.44.2
Percentage of Revenues-0.3-0.4-4.0-0.5-0.4-0.5-0.6-0.6-0.7-0.7-0.2-0.2-0.2-0.20.10.10.10.20.20.20.20.30.70.70.9
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value2.4773.945.18910-6.394.7141.8432.7721.701-2.679-0.758-2.567-3.621-0.0910.2495.2480.0980.6121.102-1.120.47711-1.091-0.84-1.896
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments0.00.02.76.3-38.82.50.81.20.8-1.4-0.4-1.1-1.5-0.10.26.30.10.61.0-0.90.48.2-1.5-1.2-4.1
Percentage of Revenues0.81.31.73.5-2.21.50.60.90.6-0.9-0.3-0.9-1.3-0.00.11.90.00.20.4-0.40.24.2-0.5-0.4-0.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value403938332.436384546433836495036218646184542756346.584-695.6041.3223.3850.6810.2491.1180.7261.2310.3360.991.1392.935-2.972-2.8911.36336-26.13-10.1471.76938-26.146-6.803-1.047
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.713.312.811.30.812.514.614.514.913.412.917.218.013.780.323.823.532.320.59.921.313.32.6-258.10.51.30.30.10.50.30.50.10.40.40.8-1.0-0.90.48.1-7.7-2.80.510.6-6.8-1.7-0.3

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.3440.595-1.4211.893-1.610.697-0.0390.158-0.055-1.002-0.276-0.657-0.863-0.150.074-0.071-0.409-0.180.2171.9660.1270.2580.5690.018-0.0390.0050.0390.031-0.03
Percentage of IncomeTaxExpenseBenefit0.81.5-3.75.6-66.11.8-0.10.3-0.1-2.6-0.7-1.3-1.7-0.40.0-0.1-0.7-0.20.47.20.20.78.6-0.0-3.00.15.712.4-2.7
Percentage of Revenues0.10.2-0.50.6-0.50.2-0.00.0-0.0-0.3-0.1-0.2-0.3-0.10.0-0.0-0.2-0.10.10.70.00.10.20.0-0.00.00.00.0-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-0.176-0.232-2.512-0.28-0.268-0.293-0.426-0.424-0.412-0.439-0.117-0.118-0.103-0.1310.0790.0790.0780.0810.130.1290.0930.1660.190.1920.137
Percentage of IncomeTaxExpenseBenefit-0.4-0.6-6.5-0.8-11.0-0.8-0.9-0.9-0.9-1.1-0.3-0.2-0.2-0.40.00.10.10.10.20.50.20.52.9-0.010.4
Percentage of Revenues-0.1-0.1-0.8-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.0-0.0-0.0-0.00.00.00.00.00.00.00.00.10.10.10.1
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.520.8271.0912.173-1.3420.990.3870.5820.357-0.563-0.159-0.539-0.76-0.019-0.005-0.15-0.487-0.2610.0871.8370.0340.0920.379-0.3950.161
Percentage of IncomeTaxExpenseBenefit1.32.12.86.5-55.12.60.81.30.8-1.4-0.4-1.1-1.5-0.1-0.0-0.2-0.8-0.30.26.80.10.35.80.112.2
Percentage of Revenues0.20.30.40.7-0.50.30.10.20.1-0.2-0.1-0.2-0.3-0.0-0.0-0.1-0.2-0.10.00.70.00.00.1-0.10.1
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value17171815121212121313131313131313141616131214161717171717171717171726252424242525262625262521
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.06.06.05.34.44.24.24.14.64.54.64.64.75.04.94.95.46.36.14.94.65.76.56.47.16.47.27.47.57.57.06.96.89.86.88.07.86.55.67.67.27.47.17.06.25.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value153150151130141491771761671511571811861432712011889107561096910282211313374724559-1.4071212-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661-186.667-51.52824-150.091
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.450.350.144.24.848.856.855.657.452.155.262.666.254.010.144.445.034.440.320.741.426.839.7305.346.749.231.030.619.725.5-0.64.84.7-27.1-104.1-80.6-85.3-5.2-30.3-49.0-41.3-9.5-51.7-13.56.0-40.5

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.2942.24-5.3537.12-6.0552.623-0.1410.59-0.205-3.766-1.04-2.468-3.249-0.5660.138-0.13-0.763-0.3330.4023.6520.2370.8281.079-0.5920.83110.6020.8610.054
Percentage of NetIncomeLoss0.81.5-3.55.4-43.11.8-0.10.3-0.1-2.5-0.7-1.4-1.7-0.40.5-0.1-0.6-0.40.46.50.21.21.1-0.10.79.00.81.20.1
Percentage of Revenues0.40.8-1.82.4-2.10.9-0.00.2-0.1-1.3-0.4-0.8-1.2-0.20.1-0.0-0.3-0.10.21.30.10.30.4-0.20.34.40.30.40.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-0.663-0.873-9.451-1.056-1.007-1.101-1.597-1.6-1.549-1.65-0.441-0.44-0.388-0.4940.1470.1470.1420.1530.240.2410.1730.3080.3560.5460.3920.71.7321.7321.98
Percentage of NetIncomeLoss-0.4-0.6-6.2-0.8-7.2-0.7-0.9-0.9-0.9-1.1-0.3-0.2-0.2-0.30.50.10.10.20.20.40.20.40.30.10.30.52.32.44.3
Percentage of Revenues-0.2-0.3-3.1-0.4-0.3-0.4-0.5-0.5-0.5-0.6-0.2-0.2-0.1-0.20.10.10.10.10.10.10.10.10.10.20.20.30.70.70.9
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.9573.1134.0988.176-5.0483.7241.4562.191.344-2.116-0.599-2.028-2.861-0.072-0.009-0.277-0.905-0.4860.1623.4110.0640.520.723-1.1380.43811-1.13-0.871-1.926
Percentage of NetIncomeLoss1.32.12.76.3-35.92.50.81.20.8-1.4-0.4-1.1-1.5-0.1-0.0-0.2-0.8-0.50.26.00.10.80.7-0.10.48.4-1.5-1.2-4.2
Percentage of Revenues0.71.01.42.8-1.71.20.50.70.5-0.7-0.2-0.7-1.0-0.0-0.0-0.1-0.3-0.20.11.20.00.20.3-0.40.24.2-0.5-0.4-0.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value153150151130141491771761671511571811861432712011889107561096910282211313374724559-1.4071212-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.450.350.144.24.848.856.855.657.452.155.262.666.254.010.144.445.034.440.320.741.426.839.7305.346.749.231.030.619.725.5-0.64.84.7-27.1-104.1-80.6-85.3-5.2-30.3-49.0-41.3-9.5
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value156153155134141541811811721561621861911483112312295125581167311383312114977754863
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues52.651.651.345.64.850.358.357.059.053.756.864.267.955.811.445.846.736.747.121.444.328.643.9309.349.955.432.231.921.026.8

Net Investment Income

us-gaap:NetInvestmentIncome

us-gaap:NetInvestmentIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value41373637394141424240383634323130292928272727272525242322212021202018213032374048555657586268
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.812.711.912.613.513.513.313.414.513.913.412.512.212.111.511.211.311.310.510.010.310.810.89.610.68.910.09.59.28.68.48.07.96.85.89.910.09.99.014.515.116.015.815.315.518.6

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.0112.8041.8950.384.0262.7542.7173.6062.4851.831.8812.5252.4311.8712.3412.9222.5022.4223.4253.8673.9946.3732.583.6983.6992.482.3853.0932.0480.8962.1792.4812.7152.5392.6153.209202.309262.0255.3292.2633.082.842.6113.057
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.00.90.60.11.40.90.91.10.90.60.70.90.90.70.91.11.00.91.31.41.52.51.01.41.50.91.01.30.90.40.91.01.00.90.71.06.20.66.00.61.50.60.90.70.60.8

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302020-06-30
Value251243
Percentage of PremiumsEarnedNet100.0100.0
Percentage of Revenues84.582.9

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value297297302296293306311318292291285290282265271270263260266273263258257269243270240235231235251254263269371306321379446337367353361382406370
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value75757407735471496574615562296146605558705677565755925616561956755600590357345873574457735879600852465282526653395379546456015857604365085574600863186812721677478269884793339404
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

mtg:HomeRe20201


Assetsdei:
Period End2021-06-302020-12-31
Value372412
Percentage of Assets4.95.6
Percentage of Assets4.95.6
Percentage of Assets mtg:HomeRe20201100.0100.0

mtg:HomeRe20211


Assetsdei:
Period End2021-06-30
Value398
Percentage of Assets5.3
Percentage of Assets5.3
Percentage of Assets mtg:HomeRe20211100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value581151384420
Percentage of Assets79.082.577.9
Percentage of Assets79.082.577.9
Percentage of Assets srt:ParentCompany100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26612674265526352191191319201987201920532095216722782384246425452605325631853289323334303643385940084097422943544447462448565154536257305377534054515680601963586756723976648101
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.136.136.136.933.331.130.832.333.435.036.938.340.742.543.944.946.555.255.656.056.359.462.064.276.477.680.381.682.784.686.788.088.788.196.588.986.383.483.482.181.781.882.186.1

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-31
Value1112828838
Percentage of Liabilities41.943.240.0
Percentage of Assets15.113.314.8
Percentage of Assets srt:ParentCompany19.116.119.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value75757407735471496574615562296146605558705677565755925616561956755600590357345873574457735879600852465282526653395379546456015857604365085574600863186812721677478269884793339404
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value581151384420
Percentage of LiabilitiesAndStockholdersEquity79.082.577.9
Percentage of Assets79.082.577.9
Percentage of Assets srt:ParentCompany100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4914473246984513438342414309415940353816358134893313323131543130299526472548258325112343223621481238118510369849318407447036807771966678671131119613881512160816691302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.963.963.963.166.768.969.267.766.665.063.161.759.357.556.155.153.544.844.444.043.740.638.035.823.622.419.718.417.315.413.312.011.311.93.511.113.716.616.617.918.318.217.913.9

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value469843093581
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets63.969.263.1
Percentage of Assets srt:ParentCompany80.983.981.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value1793
Percentage of StockholdersEquity38.2
Percentage of Assets24.4
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value2710
Percentage of StockholdersEquity57.7
Percentage of Assets36.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance us-gaap:RetainedEarnings0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-68.289
Percentage of StockholdersEquity-1.5
Percentage of Assets-0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value68
Percentage of StockholdersEquity1.5
Percentage of Assets0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-31
Value-53.78-54.443-55.316-75.052-63.705-64.712-65.813-84.026-85.626-87.175-88.825-71.736-72.176-72.564-73.058-54.714-54.567-54.425-54.272-45.374-45.133-44.652-28.93823-44.864
Percentage of StockholdersEquity-1.1-1.2-1.2-1.7-1.5-1.5-1.5-2.0-2.1-2.3-2.5-2.1-2.2-2.2-2.3-1.7-1.8-2.1-2.1-1.8-1.8-2.0-2.83.1-22.8
Percentage of Assets-0.7-0.7-0.8-1.0-1.0-1.1-1.1-1.4-1.4-1.5-1.6-1.3-1.3-1.3-1.3-1.0-1.0-0.9-0.9-0.8-0.8-0.8-0.50.4-0.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-31
Value2231782722422096513814711645-35.389-57.195-45.118-35.196292817-8.676-20.7977590-17.148-57.551-148.69-25.099
Percentage of StockholdersEquity4.53.85.85.44.81.63.23.62.91.2-1.0-1.6-1.4-1.10.90.90.6-0.3-0.82.93.6-0.8-5.6-20.0-12.7
Percentage of Assets2.92.43.73.43.21.12.22.41.90.8-0.6-1.0-0.8-0.60.50.50.3-0.1-0.41.31.6-0.3-1.1-2.7-0.5
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1691232161671451.224726330-41.493-124.214-128.931-117.294-107.76-43.783-26.097-37.494-63.101-75.13044-11.336-60.88-43.147-128.14-64.492-81.341-56.776-35.253-78.361-117.726-159.27-168.432-57.801-48.16338-7.223-14.711308950-2.5512274-106.78970
Percentage of StockholdersEquity3.42.64.63.73.30.01.71.50.8-1.1-3.5-3.7-3.5-3.3-1.4-0.8-1.3-2.4-2.91.21.8-0.5-2.7-2.0-10.3-5.4-7.8-5.8-3.8-9.3-15.8-22.7-24.7-7.4-24.55.7-0.8-1.32.56.43.4-0.21.35.70.00.0
Percentage of Assets2.21.72.92.32.20.01.21.00.5-0.7-2.2-2.3-2.1-1.9-0.8-0.5-0.7-1.1-1.30.50.8-0.2-1.0-0.7-2.4-1.2-1.5-1.1-0.7-1.4-2.1-2.7-2.8-0.9-0.90.6-0.1-0.20.41.20.6-0.00.20.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1786178218621856185918551869186418601856186218571852184718501846184217781782177916601657167016671664166216631661165816571661165916581657113511331131112911351133113111291138443367316
Percentage of StockholdersEquity36.337.739.641.142.443.743.444.846.148.652.053.255.957.258.759.061.567.269.968.966.170.774.777.6134.5140.2160.4168.7178.0197.1223.1236.1243.7213.1576.5169.6130.499.894.981.674.870.268.234.00.00.0
Percentage of Assets23.624.125.326.028.330.130.030.330.731.632.832.833.132.932.932.532.930.131.130.328.928.728.427.831.731.531.631.130.830.329.728.327.425.520.418.917.916.615.714.613.712.812.24.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value371371371371371371371371371371371371371371370370370360359359341341340340340340340340340340340340340340205205205205205205205205205130130123
Percentage of StockholdersEquity7.67.87.98.28.58.88.68.99.29.710.410.611.211.511.711.812.413.614.113.913.614.615.215.827.528.732.834.536.540.445.748.450.043.7104.130.723.618.117.114.813.612.712.310.00.00.0
Percentage of Assets4.95.05.05.25.66.06.06.06.16.36.56.66.66.66.66.56.66.16.36.15.95.95.85.76.56.46.56.46.36.26.15.85.65.23.73.43.23.02.82.62.52.32.21.40.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value29722839264225112400240722782122196617991647148913071120977939819722632525468359290187-635.224-748.876-852.458-926.887-998.903-1044.426-1074.617-1073.21-1085.323-1097.696-990.281-603.592-356.65-82.759-11.63512328844052592422534350
Percentage of StockholdersEquity60.560.056.255.654.856.852.951.048.747.146.042.739.534.731.030.027.427.324.820.318.715.313.08.7-51.3-63.2-82.2-94.1-107.2-124.2-144.3-152.7-159.5-141.1-502.8-90.4-41.1-7.3-1.08.919.127.431.571.00.00.0
Percentage of Assets39.238.335.935.136.539.136.634.532.530.729.026.323.420.017.416.614.612.211.08.98.26.24.93.1-12.1-14.2-16.2-17.4-18.6-19.1-19.2-18.3-18.0-16.9-17.8-10.0-5.6-1.2-0.21.63.55.05.69.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-384.55-384.55-393.326-393.326-393.425-393.425-283.196-263.196-194.07-169.129-175.059-100.059-100.0590.00.00.00.0-150.359-150.359-111.459-3.362-3.362-3.362-3.362-3.362-3.362-32.937-32.937-32.937-33.905-64.435-64.435-64.435-64.435-104.959-104.959-104.959-105.049-162.542-162.542-163.586-163.809-222.632-269.738-276.873-2266.364
Percentage of StockholdersEquity-7.8-8.1-8.4-8.7-9.0-9.3-6.6-6.3-4.8-4.4-4.9-2.9-3.00.00.00.00.0-5.7-5.9-4.3-0.1-0.1-0.2-0.2-0.3-0.3-3.2-3.3-3.5-4.0-8.7-9.2-9.5-8.3-53.3-15.7-12.1-9.3-13.6-11.7-10.8-10.2-13.3-20.70.00.0
Percentage of Assets-5.1-5.2-5.3-5.5-6.0-6.4-4.5-4.3-3.2-2.9-3.1-1.8-1.80.00.00.00.0-2.5-2.6-1.9-0.1-0.1-0.1-0.1-0.1-0.1-0.6-0.6-0.6-0.6-1.2-1.1-1.1-1.0-1.9-1.7-1.7-1.5-2.3-2.1-2.0-1.9-2.4-2.90.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value17818228738036636516116521825915126619117799250127427155274300249181384215232197243342296332458571163510277305639029958661038111213042166239581811851097288
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.53.95.35.65.92.62.73.64.42.74.73.43.21.84.42.37.22.74.75.24.33.16.44.14.43.84.66.45.45.97.89.525.118.412.28.913.313.811.212.612.614.00.00.00.012.60.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-31
Value733646
Percentage of CashAndCashEquivalentsAtCarryingValue25.422.630.6
Percentage of Assets1.00.60.8
Percentage of Assets srt:ParentCompany1.30.71.1

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value19019229638837136916917122526215526619117799155181
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.64.05.45.66.02.72.83.74.52.74.73.43.21.82.73.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7336462237
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents24.621.730.022.324.2
Percentage of Assets1.00.60.80.40.7
Percentage of Assets srt:ParentCompany1.30.71.10.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value514338333026545351656260
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.70.60.50.41.00.90.90.90.70.6

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4546474747495050515051504948444342383632303130292828282828282626262627262727282828282829
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.80.80.80.90.90.90.90.90.90.80.80.80.60.60.50.50.50.50.50.60.50.50.50.50.50.50.50.40.40.50.40.40.40.40.40.40.30.30.3

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value15151818172817174.1143.932
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.30.50.30.30.10.1

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value15151818172817174.1143.932
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.30.50.30.30.10.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FinancialInstrument

us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value15151818172817174.1143.932
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.30.50.30.30.10.1
Percentage of Assets us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value112106104140858999928772859593757882757173797678919488921061391781591439517979626856575961656772135
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.41.42.01.31.51.61.51.41.21.51.71.71.31.41.41.31.21.31.41.31.41.61.61.71.82.02.63.32.92.61.63.01.21.11.10.90.80.80.80.80.80.81.4

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value12441243124312428338338328328328318318318318308308308291329117811781048109712231296129612961296
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.416.816.917.412.713.513.413.513.714.214.614.714.914.814.814.614.822.520.620.118.219.020.821.624.724.524.6

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value240240240240421421420420420420419418
Percentage of LongTermDebt19.419.419.419.350.650.650.550.550.550.550.550.4
Percentage of Assets3.23.33.33.46.46.86.86.86.97.27.47.4
Percentage of Assets mtg:FivePointSevenFivePercentSeniorNotes us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.0

mtg:FivePointTwoFivePercentSeniorNotes, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value639639638638
Percentage of LongTermDebt51.451.451.451.4
Percentage of Assets8.48.68.78.9
Percentage of Assets mtg:FivePointTwoFivePercentSeniorNotes us-gaap:SeniorNotes0.00.00.00.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:ConvertibleSubordinatedDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value208208208208256256256256256256256256256389389389389389
Percentage of LongTermDebt16.816.816.816.830.830.830.930.930.930.930.930.923.431.830.030.030.030.0
Percentage of Assets2.82.82.82.93.94.24.14.24.24.44.54.64.46.66.57.47.47.4
Percentage of Assets us-gaap:ConvertibleSubordinatedDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value687000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value311000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value81000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value1915000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4914473246984513438342414309415940353816358134893313323131543130299526472548258325112343223621481238118510369849318407447036807771966678671131119613881512160816691302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets64.963.963.963.166.768.969.267.766.665.063.161.759.357.556.155.153.544.844.444.043.740.638.035.823.622.419.718.417.315.413.312.011.311.93.511.113.716.616.617.918.318.217.913.9

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value469843093581
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets63.969.263.1
Percentage of Assets srt:ParentCompany80.983.981.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value1793
Percentage of StockholdersEquity38.2
Percentage of Assets24.4
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value2710
Percentage of StockholdersEquity57.7
Percentage of Assets36.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance us-gaap:RetainedEarnings0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-68.289
Percentage of StockholdersEquity-1.5
Percentage of Assets-0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value68
Percentage of StockholdersEquity1.5
Percentage of Assets0.9
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-31
Value-53.78-54.443-55.316-75.052-63.705-64.712-65.813-84.026-85.626-87.175-88.825-71.736-72.176-72.564-73.058-54.714-54.567-54.425-54.272-45.374-45.133-44.652-28.93823-44.864
Percentage of StockholdersEquity-1.1-1.2-1.2-1.7-1.5-1.5-1.5-2.0-2.1-2.3-2.5-2.1-2.2-2.2-2.3-1.7-1.8-2.1-2.1-1.8-1.8-2.0-2.83.1-22.8
Percentage of Assets-0.7-0.7-0.8-1.0-1.0-1.1-1.1-1.4-1.4-1.5-1.6-1.3-1.3-1.3-1.3-1.0-1.0-0.9-0.9-0.8-0.8-0.8-0.50.4-0.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-31
Value2231782722422096513814711645-35.389-57.195-45.118-35.196292817-8.676-20.7977590-17.148-57.551-148.69-25.099
Percentage of StockholdersEquity4.53.85.85.44.81.63.23.62.91.2-1.0-1.6-1.4-1.10.90.90.6-0.3-0.82.93.6-0.8-5.6-20.0-12.7
Percentage of Assets2.92.43.73.43.21.12.22.41.90.8-0.6-1.0-0.8-0.60.50.50.3-0.1-0.41.31.6-0.3-1.1-2.7-0.5
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1691232161671451.224726330-41.493-124.214-128.931-117.294-107.76-43.783-26.097-37.494-63.101-75.13044-11.336-60.88-43.147-128.14-64.492-81.341-56.776-35.253-78.361-117.726-159.27-168.432-57.801-48.16338-7.223-14.711308950-2.5512274-106.78970
Percentage of StockholdersEquity3.42.64.63.73.30.01.71.50.8-1.1-3.5-3.7-3.5-3.3-1.4-0.8-1.3-2.4-2.91.21.8-0.5-2.7-2.0-10.3-5.4-7.8-5.8-3.8-9.3-15.8-22.7-24.7-7.4-24.55.7-0.8-1.32.56.43.4-0.21.35.70.00.0
Percentage of Assets2.21.72.92.32.20.01.21.00.5-0.7-2.2-2.3-2.1-1.9-0.8-0.5-0.7-1.1-1.30.50.8-0.2-1.0-0.7-2.4-1.2-1.5-1.1-0.7-1.4-2.1-2.7-2.8-0.9-0.90.6-0.1-0.20.41.20.6-0.00.20.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1786178218621856185918551869186418601856186218571852184718501846184217781782177916601657167016671664166216631661165816571661165916581657113511331131112911351133113111291138443367316
Percentage of StockholdersEquity36.337.739.641.142.443.743.444.846.148.652.053.255.957.258.759.061.567.269.968.966.170.774.777.6134.5140.2160.4168.7178.0197.1223.1236.1243.7213.1576.5169.6130.499.894.981.674.870.268.234.00.00.0
Percentage of Assets23.624.125.326.028.330.130.030.330.731.632.832.833.132.932.932.532.930.131.130.328.928.728.427.831.731.531.631.130.830.329.728.327.425.520.418.917.916.615.714.613.712.812.24.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value371371371371371371371371371371371371371371370370370360359359341341340340340340340340340340340340340340205205205205205205205205205130130123
Percentage of StockholdersEquity7.67.87.98.28.58.88.68.99.29.710.410.611.211.511.711.812.413.614.113.913.614.615.215.827.528.732.834.536.540.445.748.450.043.7104.130.723.618.117.114.813.612.712.310.00.00.0
Percentage of Assets4.95.05.05.25.66.06.06.06.16.36.56.66.66.66.66.56.66.16.36.15.95.95.85.76.56.46.56.46.36.26.15.85.65.23.73.43.23.02.82.62.52.32.21.40.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value29722839264225112400240722782122196617991647148913071120977939819722632525468359290187-635.224-748.876-852.458-926.887-998.903-1044.426-1074.617-1073.21-1085.323-1097.696-990.281-603.592-356.65-82.759-11.63512328844052592422534350
Percentage of StockholdersEquity60.560.056.255.654.856.852.951.048.747.146.042.739.534.731.030.027.427.324.820.318.715.313.08.7-51.3-63.2-82.2-94.1-107.2-124.2-144.3-152.7-159.5-141.1-502.8-90.4-41.1-7.3-1.08.919.127.431.571.00.00.0
Percentage of Assets39.238.335.935.136.539.136.634.532.530.729.026.323.420.017.416.614.612.211.08.98.26.24.93.1-12.1-14.2-16.2-17.4-18.6-19.1-19.2-18.3-18.0-16.9-17.8-10.0-5.6-1.2-0.21.63.55.05.69.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-384.55-384.55-393.326-393.326-393.425-393.425-283.196-263.196-194.07-169.129-175.059-100.059-100.0590.00.00.00.0-150.359-150.359-111.459-3.362-3.362-3.362-3.362-3.362-3.362-32.937-32.937-32.937-33.905-64.435-64.435-64.435-64.435-104.959-104.959-104.959-105.049-162.542-162.542-163.586-163.809-222.632-269.738-276.873-2266.364
Percentage of StockholdersEquity-7.8-8.1-8.4-8.7-9.0-9.3-6.6-6.3-4.8-4.4-4.9-2.9-3.00.00.00.00.0-5.7-5.9-4.3-0.1-0.1-0.2-0.2-0.3-0.3-3.2-3.3-3.5-4.0-8.7-9.2-9.5-8.3-53.3-15.7-12.1-9.3-13.6-11.7-10.8-10.2-13.3-20.70.00.0
Percentage of Assets-5.1-5.2-5.3-5.5-6.0-6.4-4.5-4.3-3.2-2.9-3.1-1.8-1.80.00.00.00.0-2.5-2.6-1.9-0.1-0.1-0.1-0.1-0.1-0.1-0.6-0.6-0.6-0.6-1.2-1.1-1.1-1.0-1.9-1.7-1.7-1.5-2.3-2.1-2.0-1.9-2.4-2.90.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value371371371371371371371371371371371371371371370370370360359359341341340340340340340340340340340340340340205205205205205205205205205130
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.95.05.05.25.66.06.06.06.16.36.56.66.66.66.66.56.66.16.36.15.95.95.85.76.56.46.56.46.36.26.15.85.65.23.73.43.23.02.82.62.52.32.21.4

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital us-gaap:CumulativeEffectPeriodOfAdoption

us-gaap:AdditionalPaidInCapital

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Additional
Period End2021-01-01
Value68
Percentage of AdditionalPaidInCapital100.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1786178218621856185918551869186418601856186218571852184718501846184217781782177916601657167016671664166216631661165816571661165916581657113511331131112911351133113111291138443
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.624.125.326.028.330.130.030.330.731.632.832.833.132.932.932.532.930.131.130.328.928.728.427.831.731.531.631.130.830.329.728.327.425.520.418.917.916.615.714.613.712.812.24.7

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-31
Value186218691862
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0
Percentage of Assets25.330.032.8
Percentage of Assets srt:ParentCompany32.036.442.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value29722839264225112400240722782122196617991647148913071120977939819722632525468359290187-635.224-748.876-852.458-926.887-998.903-1044.426-1074.617-1073.21-1085.323-1097.696-990.281-603.592-356.65-82.759-11.635123288440525924
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.238.335.935.136.539.136.634.532.530.729.026.323.420.017.416.614.612.211.08.98.26.24.93.1-12.1-14.2-16.2-17.4-18.6-19.1-19.2-18.3-18.0-16.9-17.8-10.0-5.6-1.2-0.21.63.55.05.69.8

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-31
Value264222781647
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0
Percentage of Assets35.936.629.0
Percentage of Assets srt:ParentCompany45.544.337.3

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Retained
Period End2021-01-01
Value68
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-31
Value1691232161671451.224726330-41.493-124.214-128.931-117.294-107.76-43.783-26.097-37.494-63.101-75.13044-11.336-60.88-43.147-128.14-64.492-81.341-56.776-35.253-78.361-117.726-159.27-168.432-57.801-48.16338-7.223-14.711308950-2.551222274
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.72.92.32.20.01.21.00.5-0.7-2.2-2.3-2.1-1.9-0.8-0.5-0.7-1.1-1.30.50.8-0.2-1.0-0.7-2.4-1.2-1.5-1.1-0.7-1.4-2.1-2.7-2.8-0.9-0.90.6-0.1-0.20.41.20.6-0.00.20.00.8

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-31
Value21672-124.214
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0
Percentage of Assets2.91.2-2.2
Percentage of Assets srt:ParentCompany3.71.4-2.8

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3843843933933933932832631941691751001000.00.00.01501501113.3623.3623.3623.3623.3623.3623232323364646464104104104105162162163163222269
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.15.25.35.56.06.44.54.33.22.93.11.81.80.00.00.02.52.61.90.10.10.10.10.10.10.60.60.60.61.21.11.11.01.91.71.71.52.32.12.01.92.42.9

us-gaap:TreasuryStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Treasury
Period End2020-12-312019-12-312018-12-31
Value393283175
Percentage of TreasuryStockValue100.0100.0100.0
Percentage of Assets5.34.53.1
Percentage of Assets srt:ParentCompany6.85.54.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4.5673.6855.4720.1883.8244.3194.7464.5284.3425.2824.8975.4515.2515.2724.3173.7233.3943.4612.622.7362.8883.1292.962.9582.723.2642.5312.42.2691.8031.3551.1661.3881.6212.1892.0992.0771.8592.5512.7562.7683.381
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1511982238823518415117611616416012012813315013048777593-59.307-123.43-158.927-278.915-183.997-256.91-251.709-396.078-318.414-430.493-423.615-467.85-438.539-556.529-420.933-422.022-269.61713-197.049
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues50.866.573.930.080.260.148.655.539.956.556.441.645.650.455.448.418.329.728.434.3-25.2-53.4-67.6-110.7-72.3-97.4-93.5-106.7-104.0-134.1-111.6-104.7-130.1-151.6-119.2-116.9-70.53.3-53.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-132.843-274.499-294.447-430.593-213.619166-113.142-139.733-129.118-40.115-209.569-45.793-14.162-48.256-301.112-7.948-47.02152-139.365-215.07-39.37116914415370-790.078-288.318693485144330646343534229-438.92540457-170.567
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-44.6-92.1-97.4-145.5-72.754.1-36.3-43.9-44.2-13.8-73.4-15.8-5.0-18.2-110.9-2.9-17.920.1-52.3-78.5-16.773.161.660.927.8-299.4-107.1186.7158.644.987.0144.7102.0145.664.9-121.610.5112.6-46.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-20.359-27.448-21.139359-20.315-150.007-40.925-90.248-24.941-17.292-63.36-0.058-100.059-8.073-0.039-0.059-300.232141-55.742940.00.0-21.7670.0-0.129-17.35811480.00.0-53.1070.0-49.543-77.409-51.7690.0-1.0-0.00111060.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0
Percentage of Revenues-6.8-9.2-7.0121.4-6.9-48.9-13.1-28.3-8.5-5.9-22.2-0.0-35.5-3.0-0.0-0.0-114.054.3-20.934.60.00.0-9.30.0-0.1-6.6426.60.00.0-16.50.0-11.1-23.0-14.10.0-0.3-0.0272.40.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.2282.635-0.18313-1.043154.2320.585-0.7127.755405253391865957484923543311-698.164-0.002-0.011-0.3350.09335-24.271-11.945-0.02538-25.564-9.442-3.146
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-16.86114-25.1255.263-21.98819-17.035-3.428-18.77414-1.547-21.7812.9715.619-11.488-4.971.4912-3.77-22.29813-0.869-1.10245-13.238-14.691
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1511982238823518415117611616416012012813315013048777593-59.307-123.43-158.927-278.915-183.997-256.91-251.709-396.078-318.414-430.493-423.615-467.85-438.539-556.529-420.933-422.022-269.61713-197.049
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues50.866.573.930.080.260.148.655.539.956.556.441.645.650.455.448.418.329.728.434.3-25.2-53.4-67.6-110.7-72.3-97.4-93.5-106.7-104.0-134.1-111.6-104.7-130.1-151.6-119.2-116.9-70.53.3-53.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value153150151130141491771761671511571811861432712011889107561096910282211313374724559-1.4071212-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661-186.667-51.52824-150.091
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.450.350.144.24.848.856.855.657.452.155.262.666.254.010.144.445.034.440.320.741.426.839.7305.346.749.231.030.619.725.5-0.64.84.7-27.1-104.1-80.6-85.3-5.2-30.3-49.0-41.3-9.5-51.7-13.56.0-40.5

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.2942.24-5.3537.12-6.0552.623-0.1410.59-0.205-3.766-1.04-2.468-3.249-0.5660.138-0.13-0.763-0.3330.4023.6520.2370.8281.079-0.5920.83110.6020.8610.054
Percentage of NetIncomeLoss0.81.5-3.55.4-43.11.8-0.10.3-0.1-2.5-0.7-1.4-1.7-0.40.5-0.1-0.6-0.40.46.50.21.21.1-0.10.79.00.81.20.1
Percentage of Revenues0.40.8-1.82.4-2.10.9-0.00.2-0.1-1.3-0.4-0.8-1.2-0.20.1-0.0-0.3-0.10.21.30.10.30.4-0.20.34.40.30.40.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-0.663-0.873-9.451-1.056-1.007-1.101-1.597-1.6-1.549-1.65-0.441-0.44-0.388-0.4940.1470.1470.1420.1530.240.2410.1730.3080.3560.5460.3920.71.7321.7321.98
Percentage of NetIncomeLoss-0.4-0.6-6.2-0.8-7.2-0.7-0.9-0.9-0.9-1.1-0.3-0.2-0.2-0.30.50.10.10.20.20.40.20.40.30.10.30.52.32.44.3
Percentage of Revenues-0.2-0.3-3.1-0.4-0.3-0.4-0.5-0.5-0.5-0.6-0.2-0.2-0.1-0.20.10.10.10.10.10.10.10.10.10.20.20.30.70.70.9
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.9573.1134.0988.176-5.0483.7241.4562.191.344-2.116-0.599-2.028-2.861-0.072-0.009-0.277-0.905-0.4860.1623.4110.0640.520.723-1.1380.43811-1.13-0.871-1.926
Percentage of NetIncomeLoss1.32.12.76.3-35.92.50.81.20.8-1.4-0.4-1.1-1.5-0.1-0.0-0.2-0.8-0.50.26.00.10.80.7-0.10.48.4-1.5-1.2-4.2
Percentage of Revenues0.71.01.42.8-1.71.20.50.70.5-0.7-0.2-0.7-1.0-0.0-0.0-0.1-0.3-0.20.11.20.00.20.3-0.40.24.2-0.5-0.4-0.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value153150151130141491771761671511571811861432712011889107561096910282211313374724559-1.4071212-72.93-386.691-246.942-273.891-19.555-135.294-165.205-151.732-33.661
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.450.350.144.24.848.856.855.657.452.155.262.666.254.010.144.445.034.440.320.741.426.839.7305.346.749.231.030.619.725.5-0.64.84.7-27.1-104.1-80.6-85.3-5.2-30.3-49.0-41.3-9.5
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-132.843-274.499-294.447-430.593-213.619166-113.142-139.733-129.118-40.115-209.569-45.793-14.162-48.256-301.112-7.948-47.02152-139.365-215.07-39.37116914415370-790.078-288.318693485144330646343534229-438.92540457-170.567
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-44.6-92.1-97.4-145.5-72.754.1-36.3-43.9-44.2-13.8-73.4-15.8-5.0-18.2-110.9-2.9-17.920.1-52.3-78.5-16.773.161.660.927.8-299.4-107.1186.7158.644.987.0144.7102.0145.664.9-121.610.5112.6-46.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.9640.4411.0971.2720.3620.581.5570.7992.9720.3083.5792.4033.0485.2083.9452.4625.6454.0145.5832.2450.8081.9161.7951.1241.1350.5760.709
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4456526421001712280351365328348384558307209518229
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-20.359-27.448-21.139359-20.315-150.007-40.925-90.248-24.941-17.292-63.36-0.058-100.059-8.073-0.039-0.059-300.232141-55.742940.00.0-21.7670.0-0.129-17.35811480.00.0-53.1070.0-49.543-77.409-51.7690.0-1.0-0.00111060.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0
Percentage of Revenues-6.8-9.2-7.0121.4-6.9-48.9-13.1-28.3-8.5-5.9-22.2-0.0-35.5-3.0-0.0-0.0-114.054.3-20.934.60.00.0-9.30.0-0.1-6.6426.60.00.0-16.50.0-11.1-23.0-14.10.0-0.3-0.0272.40.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.00.00.00.00.04180.01550.00.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.00.00.00.00.0100.00.0100.00.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt us-gaap:LongtermDebtType

us-gaap:RepaymentsOfLongTermDebt

us-gaap:ConvertibleSubordinatedDebt


Repayments
Period End2020-09-302016-02-29
Value61150
Percentage of RepaymentsOfLongTermDebt100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-02-292020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2020202020212120200.00.00.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value0.00.00.011920692411630.01000.00.00.0550.0
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.00.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value0966000.0001282000.0001378000.0001239000.0001237000.0001257000.030000.04000.01110000.0001372000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value0398000.017000.00373000.0193000.00412000.035000.00412000.000395000.000433000.002000.0408000.000409000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.041.20.00.029.10.00.029.90.00.033.30.00.031.90.00.034.40.050.036.80.00.029.8

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6033424486249
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0

mtg:AveragePaidClaimsReductionDueToCurtailments

mtg:AveragePaidClaimsReductionDueToCurtailments


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.23.90.13.46-0.0040.0440.00300.0080.039-0.005-0.004-0.0060.0730.001000.0550.001-0.0010.0040.051-0.003-0.004-0.0080.0820.0020.0030.0030.059
Percentage of AveragePaidClaimsReductionDueToCurtailments100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:CededPremiumsWrittenandEarnedNetofProfitCommission us-gaap:ReinsurancePolicyType

mtg:CededPremiumsWrittenandEarnedNetofProfitCommission

mtg:QuotaShareReinsuranceAgreementsExcludingCaptives


Ceded
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value333343612623233628282521333230282832312931
Percentage of CededPremiumsWrittenandEarnedNetofProfitCommission100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:DebtSecuritiesAvailableforSaleImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedinNetRealizedInvestmentGainsLosses us-gaap:FinancialInstrument

mtg:DebtSecuritiesAvailableforSaleImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedinNetRealizedInvestmentGainsLosses

us-gaap:DebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value-400000.0400000.00300000.0
Percentage of DebtSecuritiesAvailableforSaleImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedinNetRealizedInvestmentGainsLosses100.0100.00.0100.0

mtg:DilutiveSecuritiesReductionInPotentiallyDilutiveSharesDueToDebtExtinguishment us-gaap:LongtermDebtType

mtg:DilutiveSecuritiesReductionInPotentiallyDilutiveSharesDueToDebtExtinguishment

us-gaap:ConvertibleSubordinatedDebt


Dilutive
Period End2020-09-30
Value3600000.0
Percentage of DilutiveSecuritiesReductionInPotentiallyDilutiveSharesDueToDebtExtinguishment100.0

mtg:DividendDistributionOfInterestOfConvertibleJuniorSubordinatedDebentures dei:LegalEntity

mtg:DividendDistributionOfInterestOfConvertibleJuniorSubordinatedDebentures

mtg:MortgageGuarantyInsuranceCorporation


Dividend
Period End2020-09-30
Value139
Percentage of DividendDistributionOfInterestOfConvertibleJuniorSubordinatedDebentures100.0

mtg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsReportedAsLossIncurredNet us-gaap:FairValueByAssetClass

mtg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsReportedAsLossIncurredNet

mtg:RealEstateAcquired


Fair
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value232000.0125000.03000.0457000.057000.021000.0-344000.0-108000.0-450000.0-996000.0341000.0-592000.0-63000.0-163000.0-501000.0651000.0-293000.0-1031000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsReportedAsLossIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:FederalHomeLoanBankAdvancesCollateralMarketValueOfPrincipalPercent

mtg:FederalHomeLoanBankAdvancesCollateralMarketValueOfPrincipalPercent


Federal
Period End2021-06-302021-03-312020-12-312016-02-29
Value0102.001.02
Percentage of FederalHomeLoanBankAdvancesCollateralMarketValueOfPrincipalPercent0.0100.00.0100.0

mtg:GainLossOnDebtExtinghuishmentCashPortion

mtg:GainLossOnDebtExtinghuishmentCashPortion


Gain
Period End2020-12-31
Value0.0
Percentage of GainLossOnDebtExtinghuishmentCashPortion0.0

mtg:IncreaseDecreaseInProfitCommissionReceivable

mtg:IncreaseDecreaseInProfitCommissionReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-0.9665.439.32318-31.21-1.121-1.077-4.844-1.862.836-3.619-2.10411-0.377-1.055-0.7041.2083.395-1.258-0.7883.553-0.7626-40.543-27.483-23.474-22.548-21.887-22.485-22.2120.57
Percentage of IncreaseDecreaseInProfitCommissionReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses

mtg:IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.10.0630.3930.2890.34-0.170.05215-13.834-0.1210.1630.1840.4230.1540.7661.513-1.022-0.165-0.3320.141-0.918-0.5360.9561.6430.0480.4580.0261.0671.5141.3943.952-0.205-0.8892.3221.1212.383-1.6192.401-4.571166.189-4.2889.298-26.476-2.584-5.101
Percentage of IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures

mtg:PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures


Payment
Period End2020-12-31
Value0.0
Percentage of PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures0.0

mtg:PaymentOfOriginalIssueDiscountSeniorNotes

mtg:PaymentOfOriginalIssueDiscountSeniorNotes


Payment
Period End2020-12-31
Value0
Percentage of PaymentOfOriginalIssueDiscountSeniorNotes0.0

mtg:PercentOfDelinquentReinsuredLoanstoTotalReinsuredLoans us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:ReinsurancePolicyType

mtg:PercentOfDelinquentReinsuredLoanstoTotalReinsuredLoans

mtg:FinancialAssetEqualToOrGreaterThan60DaysPastDue, mtg:ExcessofLossReinsuranceAgreementsHomeReEntities


Percent
Period End2021-06-302021-03-312020-12-31
Value04.00
Percentage of PercentOfDelinquentReinsuredLoanstoTotalReinsuredLoans0.0100.00.0

mtg:ReinsuranceCedingCommissionEarned us-gaap:ReinsurancePolicyType

mtg:ReinsuranceCedingCommissionEarned

mtg:QuotaShareReinsuranceAgreementsExcludingCaptives


Reinsurance
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value121312121110111313121212
Percentage of ReinsuranceCedingCommissionEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:ReinsuranceProfitCommission us-gaap:ReinsurancePolicyType

mtg:ReinsuranceProfitCommission

mtg:QuotaShareReinsuranceAgreementsExcludingCaptives


Reinsurance
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value303117-1.2312931323738363941303031323127282926
Percentage of ReinsuranceProfitCommission100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsCedingCommissionPercent us-gaap:ReinsurancePolicyType

mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsCedingCommissionPercent

mtg:CreditUnionQuotaShareReinsuranceAgreement


Reinsurance
Period End2020-09-30
Value19.8
Percentage of ReinsuranceQuotaShareReinsuranceAgreementTermsCedingCommissionPercent100.0

mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsQuotaSharePercent us-gaap:ReinsurancePolicyType

mtg:ReinsuranceQuotaShareReinsuranceAgreementTermsQuotaSharePercent

mtg:CreditUnionQuotaShareReinsuranceAgreement


Reinsurance
Period End2020-09-30
Value64.35
Percentage of ReinsuranceQuotaShareReinsuranceAgreementTermsQuotaSharePercent100.0

mtg:QuotaShareReinsuranceAgreement2020


Reinsurance
Period End2020-09-302020-06-302020-03-31
Value29.700.3
Percentage of ReinsuranceQuotaShareReinsuranceAgreementTermsQuotaSharePercent46.20.00.0

mtg:ReinsuranceTerminations

mtg:ReinsuranceTerminations


Reinsurance
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.00.00.00.020.0160.0130.00.0250.02.22-0.2360.0-0.3010.00.00.4752.850.00.0040.0-15.425-0.0150.00.00.00.00.0-0.3440.0840.1033.1455.9060.00.85-0.4250.0-35.844-2.008-0.917-2.56-34.936
Percentage of ReinsuranceTerminations0.00.00.0100.0100.00.0100.00.0100.00.0100.0100.00.0100.00.00.0100.0100.00.0100.00.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0

mtg:StockIssuedDuringPeriodValueTreasuryStockReissuedForShareBasedCompensation us-gaap:StatementEquityComponents

mtg:StockIssuedDuringPeriodValueTreasuryStockReissuedForShareBasedCompensation

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312015-12-31
Value-0.348-15.3970.0-0.140.0-18.6670.0-0.1330.0-11.5820.00.00.00.0-0.130.0
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissuedForShareBasedCompensation100.0100.00.0100.00.0100.00.0100.00.0100.00.00.00.00.0100.00.0

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312015-12-31
Value0.08.7760.00.0990.09.7680.00.0590.05.930.00.00.00.00.130.0
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissuedForShareBasedCompensation-0.0-57.00.0-70.70.0-52.30.0-44.40.0-51.20.00.00.00.0-100.00.0

mtg:UnderwritingAndOtherExpensesNet

mtg:UnderwritingAndOtherExpensesNet


Underwriting
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6664605765615961636057615756555956534956536537514847435156615474
Percentage of UnderwritingAndOtherExpensesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments us-gaap:LongtermDebtType

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments

us-gaap:ConvertibleSubordinatedDebt


Adjustments
Period End2020-09-302016-12-312016-09-30
Value2700000.012600000.00
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments100.0100.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2020-12-312020-09-302017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value02673000.00000-3413000.009750000.00000
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments0.099.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssumedPremiumsEarned

us-gaap:AssumedPremiumsEarned


Assumed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.482.4112.1292.7293.3812.6091.811.3881.0150.8720.8690.7090.1060.1210.0370.3120.0620.0980.120.1520.1820.2080.2470.2850.3080.338
Percentage of AssumedPremiumsEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssumedPremiumsWritten

us-gaap:AssumedPremiumsWritten


Assumed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value2.2022.1311.9422.1373.8992.8592.0411.7931.5051.1071.114-3.022.0850.0920.023-0.0910.6851.2880.5110.1520.1820.2080.2470.2850.3080.3380.3720.40.430.4510.4830.5090.531
Percentage of AssumedPremiumsWritten100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.813-103.914-92.13171.867200-2.698-53.429-37.329107-111.959751477
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashDividendsPaidToParentCompany dei:LegalEntity, us-gaap:SubsequentEventType

us-gaap:CashDividendsPaidToParentCompany

mtg:MortgageGuarantyInsuranceCorporation, us-gaap:SubsequentEvent


Cash
Period End2021-08-31
Value150
Percentage of CashDividendsPaidToParentCompany100.0

us-gaap:CededPremiumsEarned

us-gaap:CededPremiumsEarned


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-30
Value43434447653129284130312521333331303033333234331426282828148.978
Percentage of CededPremiumsEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CededPremiumsEarned us-gaap:ReinsurancePolicyType

mtg:ExcessofLossReinsuranceAgreementsHomeReEntities


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value10.0108.03.74.44.75.25.44.52.5
Percentage of CededPremiumsEarned22.723.618.17.86.714.917.919.010.98.1

us-gaap:CededPremiumsWritten

us-gaap:CededPremiumsWritten


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4343444765312928413031252133333130303333323433-43.8973431323228264213116.598
Percentage of CededPremiumsWritten100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-06-302021-03-312020-12-312019-11-302019-09-30
Value00.0600.060.06
Percentage of CommonStockDividendsPerShareCashPaid0.0100.00.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:SubsequentEventType

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:SubsequentEvent


Common
Period End2021-07-292021-04-292021-01-262020-10-29
Value0.080.060.060.06
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:AssetBackedSecurities


Debt
Period End2020-09-30
Value362000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease


Debt
Period End2020-09-30
Value400000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease us-gaap:FinancialInstrument

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-31
Value-31000.0-18000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease0.00.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2.33.03.47.35.13.31.2
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value400000.0400000.0800000.03700000.01300000.0700000.01100000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-1255000.0-1550000.0-1580000.0-1526000.0-1634000.0-2103000.0-2039000.0-2167000.0-1734000.0-1684000.0-1785000.0-1543000.0-1549000.0-1535000.0-1464000.0-1567000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value409000.0439000.0196000.0196000.0201000.0190000.0000063000.062000.079000.046000.00000000
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-32.6-28.30.0-12.4-13.2-11.60.0-0.0-0.0-0.00.0-3.6-4.7-2.60.0-0.0-0.0-0.00.0-0.0-0.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value-59000.0-60000.0-62000.0-62000.0-62000.0-71000.0-70000.0-70000.0-88000.0-88000.0-87000.0-107000.0-106000.0-107000.0-172000.0-171000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value53000.053000.013000.013000.012000.013000.0-9000.0-8000.0-9000.0-8000.0-1026000.0-1026000.0-1026000.0-1026000.0-1662000.0-1662000.0-1663000.0-1662000.0-1662000.0-1662000.0-1663000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-89.8-88.30.0-21.0-19.4-21.00.011.312.911.40.01165.91165.91179.30.01553.31568.91553.30.0966.3972.5

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType, us-gaap:SubsequentEventType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:PensionPlansDefinedBenefit, us-gaap:SubsequentEvent


Defined
Period End2021-07-31
Value6.8
Percentage of DefinedBenefitPlanContributionsByEmployer100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value5.2565.2025.5265.4735.584.8664.8254.9085.5635.5555.575.0255.0135.0364.8774.865
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.2162.2151.8511.8521.8521.8521.4461.4471.4471.4451.591.591.5911.5881.3121.3121.3121.3121.2211.2221.221
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets42.242.60.033.533.833.20.029.730.029.40.028.628.628.50.026.126.226.10.025.125.1

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value2.7792.813.3753.3363.4143.9263.8983.9553.7743.7653.7823.8693.8793.8583.9764.024
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.160.1640.2080.2080.2020.2140.2820.2830.2740.2910.2090.2080.2030.2140.1770.1760.1860.1670.1760.1760.18
Percentage of DefinedBenefitPlanInterestCost5.85.80.06.26.16.30.07.27.07.40.05.55.45.70.04.54.84.30.04.44.5

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value0.8710.7627.7351.2031.2273.178
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-2.022-2.073-1.51-1.511-1.517-1.506-0.837-0.835
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-232.1-272.00.0-19.5-126.1-122.70.0-26.3

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1 us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1

mtg:PensionAndSupplementalPlans


Defined
Period End2020-09-30
Value-6520000.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1100.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

mtg:PensionAndSupplementalPlans


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value2.1521.6641.8481.8761.8212.0862.1761.9962.6332.7032.5622.3892.4842.2942.2832.402
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.390.3640.3160.3160.3220.3090.3360.3370.360.3120.290.290.310.270.2030.2030.220.1870.1870.1880.201
Percentage of DefinedBenefitPlanServiceCost18.121.90.017.117.217.00.016.216.515.60.011.011.510.50.08.58.98.20.08.28.4

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value15171715121313121111121315151515161717151414141412111011111415161422222526242420191917151512
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecurities us-gaap:LongtermDebtType

us-gaap:DilutiveSecurities

us-gaap:ConvertibleSubordinatedDebt


Dilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302015-03-312014-03-31
Value3.7123.7124.1610.04.5664.5664.5664.5664.5664.5664.5663.7578.7650.0
Percentage of DilutiveSecurities100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DirectPremiumsEarned

us-gaap:DirectPremiumsEarned


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value293296303300305289293294287279276275268265270268261259268270263255259252240245
Percentage of DirectPremiumsEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DirectPremiumsWritten

us-gaap:DirectPremiumsWritten


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value283283275272283274281286283273278280274270292287275265276283282265273273261265259255241244245247247
Percentage of DirectPremiumsWritten100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCash us-gaap:StatementEquityComponents

us-gaap:DividendsCash

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-30
Value20202020202121210.00.00.0
Percentage of DividendsCash100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:EarlyRepaymentOfSeniorDebt


Early
Period End2020-12-31
Value0.0
Percentage of EarlyRepaymentOfSeniorDebt0.0

us-gaap:EarlyRepaymentOfSeniorDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:SeniorNotes


Early
Period End2020-08-31
Value197
Percentage of EarlyRepaymentOfSeniorDebt0.0

us-gaap:EarlyRepaymentOfSubordinatedDebt

us-gaap:EarlyRepaymentOfSubordinatedDebt


Early
Period End2020-12-31
Value0.0
Percentage of EarlyRepaymentOfSubordinatedDebt0.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain

us-gaap:EquitySecuritiesFvNiUnrealizedGain


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value191000.0302000.0108000.080000.0408000.099000.0-9000.034000.0
Percentage of EquitySecuritiesFvNiUnrealizedGain100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value200000.0-400000.0100000.01200000.0-800000.00100000.0100000.03700000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-31000.035000.0-11000.0-8000.0-745000.0766000.06000.02000.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ExtinguishmentOfDebtAmount

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:SeniorNotes


Extinguishment
Period End2020-08-31
Value182
Percentage of ExtinguishmentOfDebtAmount100.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:LongtermDebtType

us-gaap:ConvertibleSubordinatedDebt


Extinguishment
Period End2020-09-302016-02-29
Value48132
Percentage of ExtinguishmentOfDebtAmount0.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

mtg:RealEstateAcquired


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.7692.0080.6981.991.8064.1154.3324.6817.1078.0849.177.979105.8947.7648.8819.4218.6838.9068.9386.748128.2789.6325.917108.76314118.0110109.538.0143.3032.7183.8882.0821.3351.1481.4271.369
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

mtg:RealEstateAcquired


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.2231.4311.4382.2666.5265.1984.8147.1738.152106.0838.5116.638.876.2826.8329.8179.5386.7237.51510115.3946.5128.8512126.28410-8.9938.6045.8447.3132.6512.5852.3863.0051.047-1.847-1.567-3.3722.72-11.290.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:IncreaseDecreaseInAccruedInvestmentIncomeReceivable

us-gaap:IncreaseDecreaseInAccruedInvestmentIncomeReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.0871.132.2150.992-0.152-2.7631.3850.0481.573-1.3022.635-1.7592.002-0.9373.132-1.1020.244-0.2871.7632.6010.69-1.2053.3632.32.4471.5960.0351.453-2.7810.151-2.591.0871.8734.047-15.174-4.568-5.029-3.652-11.438-5.9516.132-3.38220-20.7427.7981.543
Percentage of IncreaseDecreaseInAccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value295000.0774000.0323000.0593000.01131000.0983000.0521000.0341000.039000.0-258000.0-777000.0-142000.0-121000.087000.0-183000.0347000.0441000.0477000.0351000.0728000.0734000.0705000.0244000.0837000.0909000.01011000.0590000.0974000.0522000.0433000.0-2797000.0140000.0170000.0963000.0794000.0921000.0829000.01196000.0-191000.0-898000.0126000.0186000.0110000.0-1666000.0483000.0333000.0
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-38.2543647-67.2263.844229.822-6.465-33.28330-2.158-64.072-8.204-3.117150.952-1.663340.3010.2990.2340.2890.4171.999-2.7112.8130.506-0.491-1.2370.5480.2840.493-1.0780.8990.0886.388-5.4320.844-3.2211.147-0.761.345587-587.818
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2332404322219-46.963-19.605-33.362-18.755-47.027-91.969-111.156-61.464-119.516-81.938-147.953-103.771-96.67-96.85-121.056-140.013-86.541-130.818-133.863-152.183-130.775
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve us-gaap:NoncatastrophicEvent

mtg:A1000IncreaseDecreaseInAverageSeverityReserveFactor


Increase
Period End2021-06-302021-03-31
Value1.016
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve4.349.1

mtg:ChangeInEstimatesRelatedToIBNRReserves


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.5-4.4317.8
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve-6.5-13.514.040.2

mtg:OnePercentagePointIncreaseDecreaseInAverageClaimRateReserveFactor


Increase
Period End2021-06-302021-03-31
Value-6.031
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve-25.995.2

us-gaap:IncreaseDecreaseInOtherInsuranceLiabilities

us-gaap:IncreaseDecreaseInOtherInsuranceLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-0.42.9-0.21.6-1.5-0.4-1.9-2.3-4.2-3.1-4.3-6.4-6.7-5.5-7.4-6.1-7.1-4.8-6.0-5.5-2.45-4.85-3.2-2.9-6.83.36.08.48.1-0.3
Percentage of IncreaseDecreaseInOtherInsuranceLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInPremiumsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.53-0.9372.073-0.0570.588-2.1473.783-5.6885.896-3.4943.45-4.5733.512-1.3440.1072.594-0.563-0.4854.9710.819-0.583-1.284-3.11-0.889-6.7861.812-2.8887.396-1.405-7.962-2.9612.684-10.0634.813-0.810.7150.189-3.339-2.822-10.5221.1183.73213-1.183-5.0333.39
Percentage of IncreaseDecreaseInPremiumsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.2527.8591119374.1152.0751.164-13.473-1.4530.047-3.77-8.423-3.02.5961.095-1.875-3.8353.631.6484.096-3.3685.739-14.708-1.959-2.426-0.0570.1350.145-6.467-6.536-13.277-12.281-8.669-13.011-8.973-15.457-12.318-12.267-177.536313789-25.673-0.115-7.2
Percentage of IncreaseDecreaseInReinsuranceRecoverable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncreaseDecreaseInUnearnedPremiums


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-9.802-13.546-27.972-28.16-22.177-14.894-12.254-8.443-3.505-5.4812.3711.4558.4714.7542218147.5858.41112189.9061420211917178.1035.6185.116.9512.2051.373-1.297-3.05-4.188-7.491-11.837-20.282-13.676-14.496-19.021-15.26-15.614-15.686
Percentage of IncreaseDecreaseInUnearnedPremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInUnearnedPremiumsNet

us-gaap:IncreaseDecreaseInUnearnedPremiumsNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value9.8021327282214128.4433.5045.48-2.372-1.457-8.472-4.799-22.098-18.813-14.698-7.599-8.418-12.948-18.559-9.94-14.869-78.751-13.267-17.168-14.063-13.87-5.899-3.75922-2.4211.155
Percentage of IncreaseDecreaseInUnearnedPremiumsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:LongtermDebtType

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

mtg:UnvestedRestrictedStockUnits


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1425000.01694000.097000.01377000.01068000.02033000.0103000.02072000.01841000.01986000.097000.01697000.01275000.01626000.0133000.01473000.01140000.01488000.072000.01395000.01209000.01679000.0-15000.01983000.01831000.02569000.039000.03008000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncurredClaimsPropertyCasualtyAndLiability

us-gaap:IncurredClaimsPropertyCasualtyAndLiability


Incurred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29394540217602333213927-1.518-13.45523-30.9962927274760468595769081117115141122196180196266688490551337482462459310448384320454
Percentage of IncurredClaimsPropertyCasualtyAndLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value102510121813121312131213121312121813182.8226.3320.0320.033-0.3
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1


Liability
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1.5831.2150.2320.0393.038-1.672.650.04.8492.1860.1680.0955.7933.3491.7940.3318.8814.5461.1920.204166.8452.070.312218.92.360.3144423
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value141415163245695653566984918185109171127139157170221170201220231226254297342436389
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value29394540217602333213927-1.518-13.45523-30.9962927274760468595769081117115141122196180
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossRatio us-gaap:ReinsurancePolicyType

us-gaap:LossRatio

mtg:CreditUnionQuotaShareReinsuranceAgreement


Loss
Period End2020-09-30
Value49.5
Percentage of LossRatio100.0

mtg:QuotaShareReinsuranceAgreement2020


Loss
Period End2020-09-302020-06-302020-03-31
Value61.3800.62
Percentage of LossRatio124.00.00.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent


Oci
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value47-91.01629138-68.861337278-14.105-12.783-64.525112411
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value10-12.4030.00.0160.00.00.0-17.530.00.00.0-5.250.00.00.0-8.6580.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-42.10.0-0.00.00.00.00.00.0-0.0-0.0-0.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value47-91.0163341138-68.861-7.83133727821-14.105-12.783-64.525-1.876112411-96.218-11.023
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.00.0142.1100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.099.70.00.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value45-94.1292933143-72.585-9.28731708121-12.077-9.922-64.453-1.867112512-96.38-14.4345650-10.80995-63.6461924-17.30144
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.663-0.873-19.73611-1.007-1.101-18.213-1.6-1.549-1.6517-0.44-0.388-0.4945.3970.1470.1420.1538.8980.2410.1730.3087.2677.3550.3920.7461.7321.981.486-68.0380.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value57-118.04528182-90.4864191104-14.73-12.067-80.962173918-22.592867623
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.8391.105-14.3641.2751.3942.0241.9612.0890.5580.4910.625-0.226-0.22-0.234-0.37-0.266-0.474
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent1.4-0.9-50.70.7-1.54.82.12.0-3.8-4.1-0.8-1.3-0.6-1.31.6-0.3-0.6

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value57-119.1542181-91.883989102-15.288-12.558-81.587173918-22.2068678
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent98.6100.9150.799.3101.595.297.998.0103.8104.1100.8101.3100.6101.098.3100.3102.6

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value45-93.2564922144-71.4848.9263272824.717-11.637-9.534-63.959-7.264112511-105.255-14.6855649-17.73384-63.64816-24.565-21.5234339419.162-110.631-9.638-86.536457.488-44.835-59.2693853-24.687
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.6630.873-11.3471.0071.1011.61.5491.650.440.3880.494-0.147-0.142-0.153-0.241-0.173-0.308
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent1.5-0.9-50.70.7-1.54.92.12.0-3.8-4.1-0.8-1.3-0.6-1.31.6-0.3-0.6

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value45-94.12933143-72.585317081-12.077-9.922-64.453112512-14.4345650
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent98.5100.9150.799.3101.595.197.998.0103.8104.1100.8101.3100.6101.098.3100.3102.6

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value45-93.2564922144-71.4848.9263272824.717-11.637-9.534-63.959-7.264112511-105.255-14.6855649-17.73384-63.64816-24.565-21.523
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12-24.789135.94538-19.0022.3738.76419211.25-3.093-2.533-17.003-8.0096.138136.459-56.678-7.90730265.543-8.914-8.021514133.542-41.263-3.422-31.333172.774-15.672-32.02014-8.422-36.2317.5
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.1760.232-3.0170.2680.2930.4240.4120.4390.1180.1030.131-0.079-0.078-0.081-0.129-0.093-0.166
Percentage of OtherComprehensiveIncomeLossTax1.4-0.9-50.70.7-1.54.82.12.0-3.8-4.1-0.8-1.3-0.6-1.31.6-0.3-0.6

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value11-25.0218.96238-19.2958.341821-3.211-2.636-17.1346.217136.526-7.7723027
Percentage of OtherComprehensiveIncomeLossTax98.6100.9150.799.3101.595.297.998.0103.8104.1100.8101.3100.6101.098.3100.3102.6

us-gaap:OtherUnderwritingExpense

us-gaap:OtherUnderwritingExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value53484445444248454245464341464039384037373539344635393334323742454548494846484950525551555258
Percentage of OtherUnderwritingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForLossesAndLossAdjustmentExpense


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value141417173245725441567486898291112173127147159171221187192222231247263300342481413
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value823000.0000000107000.01523000.0189000.0938000.0000
Percentage of PaymentsOfDebtIssuanceCosts100.00.00.00.00.00.00.0100.0100.0100.0100.00.00.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value06621000.0041000.008899000.0074000.005652000.0058000.008073000.039000.059000.01000.06722000.023000.034000.02000.04971000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PolicyholderBenefitsAndClaimsIncurredGross

us-gaap:PolicyholderBenefitsAndClaimsIncurredGross


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value37485861256662736254030-2.081-16.77831-24.39535313256695492104819588
Percentage of PolicyholderBenefitsAndClaimsIncurredGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsEarnedNetPropertyAndCasualty

us-gaap:PremiumsEarnedNetPropertyAndCasualty


Premiums
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value255261256243260266267247249245250246232237237231229235237231221226239213217213209207214226231237247261266242262275275284288291296309271
Percentage of PremiumsEarnedNetPropertyAndCasualty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenNet

us-gaap:PremiumsWrittenNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value241241233227221246254259243244248251255236259255245236243250250231241317226234227222213218204234236
Percentage of PremiumsWrittenNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

mtg:FivePointTwoFivePercentSeniorNotes, us-gaap:SeniorNotes


Proceeds
Period End2020-08-31
Value640
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22931825430724722221120812420219017026815521115719119911411917313912713310619221426435429523634149628232326026161731527032349896291194157
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value8359952652512242817771063131314101366
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt us-gaap:FinancialInstrument

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:DebtSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value835690264235212261777106
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1.2942.247.12-6.0552.6230.59-0.205-3.766-2.468-3.249-0.566-0.13-0.763-0.333
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-0.663-0.87315-1.056-1.007-1.10111-1.6-1.549-1.653.085-0.44-0.388-0.494-1.0310.1470.1420.153-1.6840.241
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-51.2-39.00.0-14.816.6-42.00.0-271.2755.643.80.017.811.987.30.0-113.1-18.6-45.90.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1.9573.113-17.8028.176-5.0483.724-4.2922.191.344-2.11610-2.028-2.861-0.0723.345-0.277-0.905-0.486-8.1523.411
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent151.2139.00.0114.883.4142.00.0371.2-655.656.20.082.288.112.70.0213.1118.6145.90.00.0

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value79000.0-25000.027000.0229000.0133000.0166000.0-15000.0-34000.0-9000.0-67000.0286000.055000.0-100000.090000.0114000.0-97000.061000.0105000.0457000.0241000.0339000.0101000.0361000.0425000.0198000.0568000.0
Percentage of ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value8.8988.411220385.7723.5592.7363.4311.6743.019-0.508-3.4237.7416.7155.4694.1184.8999.1328.9238.6127.5219.535.6665.676.819
Percentage of ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded us-gaap:ReinsurancePolicyType

mtg:QuotaShareReinsuranceAgreementsExcludingCaptives


Reinsurance
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value8.9038.40520385.8043.552.7293.441.6763.012-0.522-3.7357.7887.3465.8794.4244.6878.1867.4326.078.513
Percentage of ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded100.199.9100.0100.0100.699.799.7100.3100.199.8102.8109.1100.6109.4107.5107.495.789.683.370.5113.2

us-gaap:ReinsuranceRetentionPolicyAmountRetained dei:LegalEntity

us-gaap:ReinsuranceRetentionPolicyAmountRetained

mtg:HomeRe20181


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-10-302018-10-01
Value-0.227165-0.241-0.327-0.755167-0.333-0.579168168
Percentage of ReinsuranceRetentionPolicyAmountRetained100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:HomeRe20191


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-05-252019-05-01
Value-0.113184-0.283-0.365-0.135185-0.078-0.016185185
Percentage of ReinsuranceRetentionPolicyAmountRetained49.8111.2117.4111.617.9110.723.42.80.00.0

mtg:HomeRe20201


Reinsurance
Period End2021-06-302021-03-312020-10-292020-10-31
Value0.0275275275
Percentage of ReinsuranceRetentionPolicyAmountRetained-0.0166.10.00.0

mtg:HomeRe20211


Reinsurance
Period End2021-06-302021-02-022021-03-31
Value0.0211211
Percentage of ReinsuranceRetentionPolicyAmountRetained-0.0127.40.0

mtg:HomeRespecialpurposeinsurers


Reinsurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.692-0.89352-0.411-0.595
Percentage of ReinsuranceRetentionPolicyAmountRetained211.6117.9210.7123.4102.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value012.820012.870011.760015.80010.41005.660.050.018.98008.43
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value012.82-0.2013.110.45011.76-0.32015.710010.41005.6700.018.98008.43
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.00.0101.90.00.0100.00.00.099.40.00.0100.00.00.0100.20.0100.0100.00.00.0100.0

us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount

us-gaap:StatutoryAccountingPracticesStatutoryNetIncomeAmount


Statutory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value69473326-51.2015574838165
Percentage of StatutoryAccountingPracticesStatutoryNetIncomeAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2541433620559464846474847495965607880959510492115115114109142148150155211218
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3.489-1.7892.3044.5111.157-23.246-14.596-24.739-8.425-20.069-48.931-62.78-35.22-96.424-30.832-50.948-53.0-48.067-34.65-57.941-7.0-20.172-38.589-23.945-27.596-24.972-32.75-9.263-33.374-15.904-37.933
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:NoncatastrophicEvent

mtg:IncreaseDecreaseInEstimatedSeverityPrimaryDefaults


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.4530.0590.032-0.264103.0-3.0-1.03.00.07.03.03.01611-4.0-2.04.0-3.0-5.0-5.02231-3.0-2.017-15.0-12.0-13.05.0-10.0-41.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense13.0-3.31.4-5.992.5259.312.96.9-12.1-0.0-34.9-6.1-4.8-45.4-11.413.03.9-7.56.214.48.6-314.3-153.77.88.4-61.660.136.6140.3-15.062.9108.1

mtg:IncreaseDecreaseInExpectedClaimRate


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.4430.087-0.910.478-2.1040.0-18.0-27.0-36.0-31.0-29.0-64.0-73.0-47.0-110.0-34.0-50.0-54.0-40.0-32.0-50.0-26.0-46.0-36.0-20.0-39.0-5.0-13.05.0-30.00.010.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-12.7-4.9-39.510.6-18.10.077.4185.0145.5368.0144.5130.8116.3133.4114.1110.398.1101.983.292.486.3371.4228.093.383.5141.320.039.7-54.089.9-0.0-26.4

mtg:IncreaseDecreaseRelatedToIBNRPoolReservesLAEReservesandReinsurance


Supplemental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.511-1.9354.3193.121-2.0128.16123
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.6108.296.026.8-172.9-87.3-33.0-273.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStock


Treasury
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312015-12-31
Value0.00.00.01192069240.0750.01000.00.0390.0
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.00.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment us-gaap:LongtermDebtType

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:ConvertibleSubordinatedDebt


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302015-03-312014-03-31
Value1515170.01919191919191919280.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

mtg:AmountOfPolicyholdersPositionAboveOrBelowRequiredRegulatoryMinimum dei:LegalEntity

mtg:AmountOfPolicyholdersPositionAboveOrBelowRequiredRegulatoryMinimum

mtg:MortgageGuarantyInsuranceCorporation


Amount
Period End2021-06-302021-03-312020-12-312020-09-302012-12-31
Value3500340032003100640
Percentage of AmountOfPolicyholdersPositionAboveOrBelowRequiredRegulatoryMinimum100.0100.0100.0100.0100.0

mtg:AmountOfRequiredMpp dei:LegalEntity

mtg:AmountOfRequiredMpp

mtg:MortgageGuarantyInsuranceCorporation


Amount
Period End2021-06-302021-03-312020-09-302012-12-31
Value1700170017001200
Percentage of AmountOfRequiredMpp100.0100.0100.0100.0

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value5436527950644866
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost100.0100.0100.0100.0

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue

mtg:AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value5705548653855155
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue100.0100.0100.0100.0

mtg:ContingencyReserve

mtg:ContingencyReserve


Contingency
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3850373335853409323031663021287627292583244218961360826318186.434.1045.48417
Percentage of ContingencyReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:DebtInstrumentConvertibleConversionPrice2 us-gaap:LongtermDebtType

mtg:DebtInstrumentConvertibleConversionPrice2

us-gaap:ConvertibleSubordinatedDebt


Debt
Period End2020-12-312016-12-312015-12-31
Value17.217.5517.55
Percentage of DebtInstrumentConvertibleConversionPrice2100.0100.0100.0

mtg:DeferredTaxAssetsLiabilitiesNetOther

mtg:DeferredTaxAssetsLiabilitiesNetOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-7205000.0-5240000.0-4587000.06051000.06678000.07373000.0-108000.0
Percentage of DeferredTaxAssetsLiabilitiesNetOther100.0100.0100.0100.0100.0100.0100.0

mtg:DeferredTaxAssetsLiabilitiesNetOtherComprehensiveIncome

mtg:DeferredTaxAssetsLiabilitiesNetOtherComprehensiveIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-72.341-36.8229.407-7.782118.904-2.8
Percentage of DeferredTaxAssetsLiabilitiesNetOtherComprehensiveIncome100.0100.0100.0100.0100.0100.0100.0

mtg:DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits

mtg:DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value13105.0477.162121413
Percentage of DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits100.0100.0100.0100.0100.0100.0100.0

mtg:DefinedBenefitPlanMinimumValueOfOutstandingNoncallableBondsUsedInHypotheticalCashFlowBondMatchingExercise

mtg:DefinedBenefitPlanMinimumValueOfOutstandingNoncallableBondsUsedInHypotheticalCashFlowBondMatchingExercise


Defined
Period End2020-12-31
Value50
Percentage of DefinedBenefitPlanMinimumValueOfOutstandingNoncallableBondsUsedInHypotheticalCashFlowBondMatchingExercise100.0

mtg:DirectDomesticPrimaryInsuranceInForce

mtg:DirectDomesticPrimaryInsuranceInForce


Direct
Period End2020-12-31
Value246600
Percentage of DirectDomesticPrimaryInsuranceInForce100.0

mtg:DirectDomesticPrimaryRiskInForce

mtg:DirectDomesticPrimaryRiskInForce


Direct
Period End2020-12-31
Value61800
Percentage of DirectDomesticPrimaryRiskInForce100.0

mtg:InvestmentInSubsidiariesAtEquityInNetAssets us-gaap:ConsolidatedEntities

mtg:InvestmentInSubsidiariesAtEquityInNetAssets

srt:ParentCompany


Investment
Period End2020-12-312019-12-312018-12-31
Value474046113981
Percentage of InvestmentInSubsidiariesAtEquityInNetAssets100.0100.0100.0

mtg:MaximumExposureAssociatedWithOtherDiscussionsLegalProceedings

mtg:MaximumExposureAssociatedWithOtherDiscussionsLegalProceedings


Maximum
Period End2021-06-302021-03-312020-12-312020-09-30
Value28434040
Percentage of MaximumExposureAssociatedWithOtherDiscussionsLegalProceedings100.0100.0100.0100.0

mtg:MaximumNumberOfSharesOfCommonStockIssuableUnderAlternativePaymentMechanism us-gaap:LongtermDebtType

mtg:MaximumNumberOfSharesOfCommonStockIssuableUnderAlternativePaymentMechanism

us-gaap:ConvertibleSubordinatedDebt


Maximum
Period End2020-12-31
Value10000000.0
Percentage of MaximumNumberOfSharesOfCommonStockIssuableUnderAlternativePaymentMechanism100.0

mtg:PercentageBackedByUsGovernment

mtg:PercentageBackedByUsGovernment


Percentage
Period End2020-12-31
Value27.0
Percentage of PercentageBackedByUsGovernment100.0

mtg:PercentageOfFairValueToAmortizedCostSecuritiesinUnrealizedLossPosition

mtg:PercentageOfFairValueToAmortizedCostSecuritiesinUnrealizedLossPosition


Percentage
Period End2020-12-31
Value99.0
Percentage of PercentageOfFairValueToAmortizedCostSecuritiesinUnrealizedLossPosition100.0

mtg:PercentofinternationalmutualfundsequityallocationincompaniesprimarilybasedinEuropeandPacificBasin us-gaap:RetirementPlanType

mtg:PercentofinternationalmutualfundsequityallocationincompaniesprimarilybasedinEuropeandPacificBasin

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Percentofinternationalmutualfundsequityallocationincompaniesprimarilybasedin
Period End2020-12-31
Value20.0
Percentage of PercentofinternationalmutualfundsequityallocationincompaniesprimarilybasedinEuropeandPacificBasin100.0

mtg:Percentofinternationalmutualfundsequityallocationinemergingmarkets us-gaap:RetirementPlanType

mtg:Percentofinternationalmutualfundsequityallocationinemergingmarkets

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Percentofinternationalmutualfundsequityallocationinemergingmarketsus-gaap:
Period End2020-12-31
Value3.0
Percentage of Percentofinternationalmutualfundsequityallocationinemergingmarkets100.0

mtg:PremiumRefundLiabilityExpectedClaimPayments

mtg:PremiumRefundLiabilityExpectedClaimPayments


Premium
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value32333029282930313437404450566168748185919799102105107112115112127126131145137136134118130120114115112113
Percentage of PremiumRefundLiabilityExpectedClaimPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PrimaryDefaultInventoryFourToElevenMonthsPercentage

mtg:PrimaryDefaultInventoryFourToElevenMonthsPercentage


Primary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value30.057.060.058.00.120.350.320.30.30.320.290.290.350.40.260.270.270.30.270.250.240.280.250.230.230.260.250.230.230.250.240.220.230.260.250.240.250.280.260.250.260.290.270.270.310.39
Percentage of PrimaryDefaultInventoryFourToElevenMonthsPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PrimaryDefaultInventoryPercentage

mtg:PrimaryDefaultInventoryPercentage


Primary
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value100.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of PrimaryDefaultInventoryPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PrimaryDefaultInventoryPercentofDefaultInventorySubjectToCovid19ForbearancePlan

mtg:PrimaryDefaultInventoryPercentofDefaultInventorySubjectToCovid19ForbearancePlan


Primary
Period End2020-09-30
Value67.0
Percentage of PrimaryDefaultInventoryPercentofDefaultInventorySubjectToCovid19ForbearancePlan100.0

mtg:PrimaryDefaultInventoryThreeMonthsOrLessPercentage

mtg:PrimaryDefaultInventoryThreeMonthsOrLessPercentage


Primary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value15.017.020.025.00.730.280.320.320.30.280.30.280.240.210.370.270.250.20.240.240.220.180.210.220.190.160.190.190.180.160.180.180.160.140.170.170.160.140.180.180.160.140.180.180.160.19
Percentage of PrimaryDefaultInventoryThreeMonthsOrLessPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths


Primary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-03-312014-12-31
Value15.026.031.032.00.330.340.360.360.370.380.380.390.430.440.450.450.460.480.470.480.490.490.50.50.530.53
Percentage of PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentage

mtg:PrimaryDefaultInventoryTwelveMonthsOrMorePercentage


Primary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value55.026.020.017.00.150.370.360.380.40.40.410.430.410.390.370.460.480.50.490.510.540.540.540.550.580.580.560.580.590.590.580.60.610.60.580.590.590.580.560.570.580.570.550.550.530.42
Percentage of PrimaryDefaultInventoryTwelveMonthsOrMorePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:RealEstateAssetsAcquiredFairValueDisclosure

mtg:RealEstateAssetsAcquiredFairValueDisclosure


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.5721.7941.0921.691.9636.2267.2527.77910111412
Percentage of RealEstateAssetsAcquiredFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:RealEstateAssetsAcquiredFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.5721.7941.0921.691.9636.2267.2527.77910111412
Percentage of RealEstateAssetsAcquiredFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages dei:LegalEntity

mtg:ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages

mtg:HomeRe20181


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-10-302018-10-01
Value218218218218218233260288318318318318
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:HomeRe20191


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-05-252019-05-012018-12-31
Value2082082082082082292713153153153150.0
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages95.395.395.395.395.398.3103.9109.399.10.00.00.0

mtg:HomeRe20201


Reinsurance
Period End2021-06-302021-03-312020-12-312020-10-312020-10-29
Value352412412412412
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages161.3189.1189.10.00.0

mtg:HomeRespecialpurposeinsurers


Reinsurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value426426463531604634318
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages195.3195.3198.3203.9209.3199.1100.0

mtg:ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages dei:LegalEntity, us-gaap:SubsequentEventType

mtg:HomeRe20212, us-gaap:SubsequentEvent


Reinsurance
Period End2021-08-03
Value398
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages0.0

mtg:HomeRespecialpurposeinsurers, us-gaap:SubsequentEvent


Reinsurance
Period End2021-02-282020-10-30
Value398412
Percentage of ReinsuranceRetentionPolicyRemainingExcessOfLossReinsuranceCoverages0.00.0

mtg:SeniorNotesFairValueDisclosure us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

mtg:SeniorNotesFairValueDisclosure

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Senior
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value262261261257471
Percentage of SeniorNotesFairValueDisclosure100.0100.0100.0100.0100.0

mtg:FivePointTwoFivePercentSeniorNotes, us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:SeniorNotes


Senior
Period End2021-06-302021-03-312020-12-312020-09-30
Value689677696673
Percentage of SeniorNotesFairValueDisclosure263.3259.2266.1262.0

mtg:SeniorNotesFairValueDisclosure us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SeniorNotes


Senior
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value240240240240420
Percentage of SeniorNotesFairValueDisclosure92.092.291.993.589.2

mtg:FivePointTwoFivePercentSeniorNotes, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:SeniorNotes


Senior
Period End2021-06-302021-03-312020-12-312020-09-30
Value639639638638
Percentage of SeniorNotesFairValueDisclosure244.1244.7244.0248.3

mtg:StatutoryCapitalRequirementsRiskToCapitalRatio dei:LegalEntity

mtg:StatutoryCapitalRequirementsRiskToCapitalRatio

mtg:MortgageGuarantyInsuranceCorporation


Statutory
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-30
Value8.98.89.29.49.79.09.510.712.312.112.3
Percentage of StatutoryCapitalRequirementsRiskToCapitalRatio100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mtg:StatutoryCapitalRequirementsRiskToCapitalRatioForCombinedInsuranceOperations

mtg:StatutoryCapitalRequirementsRiskToCapitalRatioForCombinedInsuranceOperations


Statutory
Period End2021-06-302021-03-312020-12-312020-09-30
Value8.98.89.19.4
Percentage of StatutoryCapitalRequirementsRiskToCapitalRatioForCombinedInsuranceOperations100.0100.0100.0100.0

mtg:TaxAndLossBondsHeld

mtg:TaxAndLossBondsHeld


Tax
Period End2020-12-31
Value271
Percentage of TaxAndLossBondsHeld100.0

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedInvestmentIncomeReceivable


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5251494746464948484648454745464244434442393940363432303029313134333127424652556767737079
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable us-gaap:ConsolidatedEntities

srt:ParentCompany


Accrued
Period End2020-12-312019-12-312018-12-31
Value3.762.4982.02
Percentage of AccruedInvestmentIncomeReceivable7.55.04.2

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value715170126969674462445859592758475688550852665003
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value33734244361054443521621921625114284
Percentage of AssetsFairValueDisclosure4.74.96.49.18.77.43.63.83.84.62.71.7

us-gaap:FairValueInputsLevel2


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value681366686525613256985417570356205461524451094901
Percentage of AssetsFairValueDisclosure95.395.193.690.991.392.596.296.196.095.297.098.0

us-gaap:FairValueInputsLevel3


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.5721.7941.0921.691.9636.2267.2527.77910111417
Percentage of AssetsFairValueDisclosure0.00.00.00.00.00.10.10.10.20.20.30.3

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AssetsHeldByInsuranceRegulators


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value131314141414131313131313131313182020212221
Percentage of AssetsHeldByInsuranceRegulators100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldInTrust

us-gaap:AssetsHeldInTrust


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value18516716589267.7
Percentage of AssetsHeldInTrust100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.8032.02.9463.4724.0342.0312.4662.8192.7871.0450.2260.00.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.5660.0330.0020.304
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax19.21.30.90.0

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.9520.9660.5660.00.00.0330.0810.0550.00.0020.0670.0640.1630.304
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax52.848.319.20.00.01.32.92.00.00.90.00.00.00.0

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9.899121613103.1615.5316.7144.451.8080.8880.2140.3510.7221.204
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax549.0643.8545.0397.2259.1155.6224.3238.2159.7173.0392.90.00.00.00.0

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11410415514413744767461232.1031.1521.1741.92110
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6357.55213.95266.74166.13407.72185.43090.82647.42205.22235.7930.50.00.00.00.0

us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value294259349316284157185195158853319273168
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax16309.512956.611851.39105.67041.07757.37511.96934.65697.48195.314649.10.00.00.00.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value4.2845.276.4726.1066.0556.0320.4291.0220.1830.1430.0320.0350.0410.0480.06
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax237.6263.5219.7175.9150.1297.017.436.36.613.714.20.00.00.00.0

us-gaap:SovereignDebtSecurities


Available
Period End2021-06-302020-12-312020-09-30
Value0.0640.2240.056
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.57.61.6

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value161132166146124999910888582917262756
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax8973.26643.45653.74221.33080.14900.64027.93858.23171.15585.812946.50.00.00.00.0

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.6470.8731.1641.5131.7772.4081.2371.4561.4740.910.5970.1740.210.2560.274
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax35.943.639.543.644.1118.650.251.652.987.1264.20.00.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.1010.2220.0180.1452.7166.3110.1780.0650.1020.0330.1460.5460.3330.0290.002
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.6921.6435.2940.079
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax3844.4923.03626.03950.0

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.0650.0560.6922.9758.355191.6431.6721.9292.8625.2940.4580.1640.0410.079
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax64.425.23844.42051.7307.6304.7923.02572.31891.28672.73626.083.949.2141.43950.0

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.9342.081.1250.8461.4113.1720.7790.2660.754.5999.5811119.84.906
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax924.8936.96250.0583.452.050.3437.6409.2735.313936.46561.62193.03557.733793.1245300.0

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.966141.7282.7485.16413.0083.1513.1349.648404242339.169
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax5906.96752.39600.01895.2190.0655.01689.94847.73072.529236.427749.37748.212840.5116617.2458450.0

us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11334.6598.76719749.9028.38611277791857531
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax11588.115226.625883.36046.2711.61173.95562.912901.511176.584290.953358.916820.125539.6260651.71577350.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.3961.410.8381.1470.3530.7583.2272.6634.717.859101110107.364
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2372.3635.14655.6791.013.012.01812.94096.94617.623815.27061.02123.43174.236406.9368200.0

us-gaap:SovereignDebtSecurities


Available
Period End2021-06-302021-03-31
Value0.0060.096
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax5.943.2

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.087140.2560.8911.2913.2580.8570.4940.6482.226102116198.749
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2066.36633.81422.2614.547.551.6481.5760.0635.36745.57524.03957.55010.865965.5437450.0

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.1490.2220.0020.0150.0410.0210.210.0750.1270.5891.0763.3532.6882.2121.278
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax147.5100.011.110.31.50.3118.0115.4124.51784.8737.0614.1807.27627.663900.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value668265866317603755975375556254735357522951965042498349744946466646744655471746024421450646844598458645674602464446114948
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:ConsolidatedEntities

srt:ParentCompany


Available
Period End2020-12-312019-12-312018-12-31
Value773287203
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis12.35.23.9

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value15418520320119821022721221521711171719.4514.925
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.32.83.23.33.53.94.13.94.04.22.21.41.40.20.1

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value310327310100
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.95.96.02.0

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value396372310312313316327329330330310307113107100
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.95.74.95.25.65.95.96.06.26.36.06.12.32.22.0

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value318317312258264268274280268272276281294302301
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.84.84.94.34.75.04.95.15.05.25.35.65.96.16.1

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value284727712690262725142508271126532570244224392296213720872065
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis42.642.142.643.544.946.748.848.548.046.746.945.542.942.041.8

us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value668265866317603755975375556254735357522951965042498349744946
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherDebtSecurities


Available
Period End2020-12-31
Value21
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.3

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value377432425398293259271248213188189166174182189
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.66.66.76.65.24.84.94.54.03.63.63.33.53.73.8

us-gaap:SovereignDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value134.4854.4854.485
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.20.10.10.1

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value233922492083188616661614155515521566161117011738205620932105
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis35.034.233.031.329.830.028.028.429.230.832.734.541.342.142.6

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value235252264347346197195197194167167179135191179
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis3.53.84.25.86.23.73.53.63.63.23.23.62.73.83.6

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1586146312801152
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1690153814021256
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1870196419451993
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1939203320332077
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1530147814481283
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1621153715561380
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value449372390437
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value453376393440
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value15418520320119821022721221521711171
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-31
Value310327310
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost152.4143.8277.4

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value396372312313316329330330307
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost257.1200.9154.7158.0149.9154.8153.7152.0430.9

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value318317312258264268274280268272276281
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost206.8171.0153.4128.2133.6127.3120.6131.8124.7125.1246.8394.5

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value377432425398293259271248213188189166
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost245.0233.1208.8197.8148.2123.1119.4116.699.186.5169.0233.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value15518720620419920622921521721811270
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-31
Value310325305
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue150.2141.7272.5

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value396373309304297327328327307
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue254.9199.5151.0152.8143.7152.1151.0150.0433.6

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value327327327271273268278286271269267270
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue210.3175.2158.5132.6137.3130.0121.5133.1124.9123.3238.9380.9

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value379436431403299264268246208180178154
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue243.5233.0208.6197.3150.1128.2116.9114.395.882.6159.7218.5

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value69646811666163445862545857375660550452875151496949264930498347104701464246854718455645574657458845494594460946264611475848635017499645374227492353985533582064556743720074557251
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:ConsolidatedEntities

srt:ParentCompany


Available
Period End2020-12-312019-12-312018-12-31
Value773288201
Percentage of AvailableForSaleSecuritiesDebtSecurities11.65.03.9

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15114314921216442344042424281
Percentage of AvailableForSaleSecuritiesDebtSecurities2.22.12.23.42.80.80.60.70.80.80.81.6

us-gaap:FairValueInputsLevel1, us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value15114314921216442344042424281
Percentage of AvailableForSaleSecuritiesDebtSecurities2.22.12.23.42.80.80.60.70.80.80.81.6

us-gaap:FairValueInputsLevel2, us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1551872062041992062292152172181124.923
Percentage of AvailableForSaleSecuritiesDebtSecurities2.22.73.13.23.43.84.03.84.04.12.20.1

us-gaap:FairValueInputsLevel2, us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value310325305101
Percentage of AvailableForSaleSecuritiesDebtSecurities4.75.75.92.0

us-gaap:FairValueInputsLevel2, us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value396373310309304297325327328327305
Percentage of AvailableForSaleSecuritiesDebtSecurities5.75.54.74.95.25.45.75.86.06.25.9

us-gaap:FairValueInputsLevel2, us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value327327327271273268278286271269267297
Percentage of AvailableForSaleSecuritiesDebtSecurities4.74.84.94.34.74.94.95.14.95.15.26.0

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value295628612844276926462511278527242628245624002066
Percentage of AvailableForSaleSecuritiesDebtSecurities42.442.042.743.745.246.048.548.147.846.546.641.5

us-gaap:FairValueInputsLevel2, us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value681366686512613256985416570356205461524451094901
Percentage of AvailableForSaleSecuritiesDebtSecurities97.897.997.896.697.299.299.499.399.299.299.298.4

us-gaap:FairValueInputsLevel2, us-gaap:OtherDebtSecurities


Available
Period End2020-12-31
Value21
Percentage of AvailableForSaleSecuritiesDebtSecurities0.3

us-gaap:FairValueInputsLevel2, us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value379436431403299264268246208180178181
Percentage of AvailableForSaleSecuritiesDebtSecurities5.46.46.56.45.14.94.74.43.83.43.53.6

us-gaap:FairValueInputsLevel2, us-gaap:SovereignDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value134.3894.7094.541
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.10.10.1

us-gaap:FairValueInputsLevel2, us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value249823682249203217881710165316601653166717202152
Percentage of AvailableForSaleSecuritiesDebtSecurities35.934.833.832.030.531.328.829.330.031.533.443.2

us-gaap:FairValueInputsLevel2, us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8411011613618415716115815212512497
Percentage of AvailableForSaleSecuritiesDebtSecurities1.21.61.72.13.12.92.82.82.82.42.42.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value15518720620419920622921521721811270719.4224.923
Percentage of AvailableForSaleSecuritiesDebtSecurities2.22.73.13.23.43.84.03.84.04.12.21.41.40.20.1

us-gaap:CollateralizedDebtObligations


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value310325305101
Percentage of AvailableForSaleSecuritiesDebtSecurities4.75.75.92.0

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value396373310309304297325327328327305307113107101
Percentage of AvailableForSaleSecuritiesDebtSecurities5.75.54.74.95.25.45.75.86.06.25.96.22.32.22.0

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value327327327271273268278286271269267270283293297
Percentage of AvailableForSaleSecuritiesDebtSecurities4.74.84.94.34.74.94.95.14.95.15.25.45.86.06.0

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value295628612844276926462511278527242628245624002255209520562066
Percentage of AvailableForSaleSecuritiesDebtSecurities42.442.042.743.745.246.048.548.147.846.546.645.442.541.741.5

us-gaap:DebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value696468116661634458625458573756605504528751514969492649304983
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherDebtSecurities


Available
Period End2020-12-31
Value21
Percentage of AvailableForSaleSecuritiesDebtSecurities0.3

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value379436431403299264268246208180178154163171181
Percentage of AvailableForSaleSecuritiesDebtSecurities5.46.46.56.45.14.94.74.43.83.43.53.13.33.53.6

us-gaap:SovereignDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value134.3894.7094.541
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.10.10.1

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value249823682249203217881710165316601653166717201734206621022152
Percentage of AvailableForSaleSecuritiesDebtSecurities35.934.833.832.030.531.328.829.330.031.533.434.941.942.743.2

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value236253265348348199196199195168167176132189178
Percentage of AvailableForSaleSecuritiesDebtSecurities3.43.74.05.55.93.73.43.53.63.23.23.52.73.83.6

us-gaap:ConvertibleSubordinatedDebt

us-gaap:ConvertibleSubordinatedDebt


Convertible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value208208208208256256256256256256256256256256256256256256256256256256389389389389389389389389389389389389379370361352344336329322315291
Percentage of ConvertibleSubordinatedDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleSubordinatedDebt us-gaap:ConsolidatedEntities

srt:ParentCompany


Convertible
Period End2020-12-312019-12-312018-12-31
Value208389389
Percentage of ConvertibleSubordinatedDebt100.0151.6151.6

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption


Cumulative
Period End2021-01-01
Value68
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption us-gaap:NewAccountingPronouncementEarlyAdoption, us-gaap:StatementEquityComponents

mtg:AccountingStandardsUpdate202006AccountingForConvertibleInstrumentsAndContractsInAnEntitysOwnEquity, us-gaap:AdditionalPaidInCapital


Cumulative
Period End2021-01-01
Value-68.289
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption-100.0

mtg:AccountingStandardsUpdate202006AccountingForConvertibleInstrumentsAndContractsInAnEntitysOwnEquity, us-gaap:RetainedEarnings


Cumulative
Period End2021-01-01
Value68
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:DebtInstrumentConvertibleConversionPrice1 us-gaap:LongtermDebtType

us-gaap:DebtInstrumentConvertibleConversionPrice1

us-gaap:ConvertibleSubordinatedDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value13.2313.2313.2313.4313.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.513.5
Percentage of DebtInstrumentConvertibleConversionPrice1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

mtg:FivePointSevenFivePercentSeniorNotes, us-gaap:SeniorNotes


Debt
Period End2020-12-312018-12-31
Value242425
Percentage of DebtInstrumentFaceAmount100.0100.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value138813801392136090889097497595993591494192894797197295015311377133015021686
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1244124312431242833833832832832831831831831830830830829132911781178104810971211
Percentage of DebtInstrumentFairValue89.690.189.391.391.793.585.485.386.889.090.988.389.587.785.585.487.386.885.688.60.00.080.6

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss


Debt
Period End2020-09-30
Value362000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2021-03-312020-12-312020-09-30
Value31000.049000.0362000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.00.0100.0

us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-312020-09-30
Value31000.049000.0362000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss0.00.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value3640801541501833793396831554
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value731960.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger92.151.90.0

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value212473149142110196113450.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger61.059.992.196.694.660.251.933.46.60.0

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value4.0132.7991.3383.2257.593111378163
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger11.132.13.50.92.14.13.14.011.510.5

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value103.2543.5663.8864.91362110116158178
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger27.98.04.42.53.334.129.134.323.211.5

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.2311.3950.8321.9624.607104.4763.4756.9449
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value0.4311.4180.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss51.831.70.0

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.0380.0410.4311.7044.5249.1561.4180.6640.3420.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss16.52.951.886.998.290.931.719.14.90.0

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.0681.3310.3360.1390.0140.0860.0510.070.758.52
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss29.495.440.47.10.30.91.12.010.817.3

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.1250.0230.0650.1190.0690.6982.7662.3544.41310
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss54.11.67.86.11.56.961.867.763.620.9

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1045146830065968015376243913332026
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value325014171764218.9989.25751
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months3.13.45.02.72.64.23.52.32.82.5

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value9581296
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months31.713.014.6

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value124559515916218681147247296
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months11.93.831.724.223.912.113.037.774.414.6

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value817013132813362210.065
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months7.84.84.42.04.28.710.05.60.03.2

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value358580442631751034221135291272
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months34.339.614.940.025.867.335.534.78.862.8

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value22212798128517.66410547320.024
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months21.38.732.719.57.50.516.912.19.60.0

us-gaap:SovereignDebtSecurities


Debt
Period End2021-06-302021-03-31
Value4.4794.389
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months0.40.3

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value15352231723799744.9652.283316
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months14.735.610.411.05.56.512.01.30.715.6

us-gaap:USTreasuryAndGovernment


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value68572.695.0042071257251223
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months6.53.90.90.830.50.89.26.53.71.2

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value11323.8276.80514645.4264.9114.4628
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.1010.2220.0180.1452.7166.3110.1180.0650.1020.146
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.90.70.52.118.59.92.21.32.30.5

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value0.2610.2255.294
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss6.84.118.6

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.0270.0150.2611.2713.831100.2251.0081.5875.294
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.20.06.818.726.015.74.120.535.618.6

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.8660.7490.7890.7071.3973.0860.7280.1960.01.06
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss7.52.320.610.49.54.813.44.00.03.7

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5.966141.7282.7485.16412.8472.8181.98718
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss52.046.345.240.435.164.452.557.444.663.6

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.2711.3870.7731.0280.2840.060.4610.3090.2970.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss19.84.320.215.11.90.18.56.36.70.0

us-gaap:SovereignDebtSecurities


Debt
Period End2021-06-302021-03-31
Value0.0060.096
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.10.3

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.087140.2560.8911.2913.2550.8470.4670.4683.875
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss18.245.46.713.18.85.115.69.510.513.6

us-gaap:USTreasuryAndGovernment


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.1490.2220.0020.0150.0410.0210.20.0480.0190.015
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1.30.70.10.20.30.03.71.00.40.1

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value108115093818148311721100373010163580
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value325014171764258.9989.25751
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition3.03.43.92.12.13.72.51.20.91.4

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value169278296
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition44.427.78.3

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value14679169309304297278260293296
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition13.65.344.437.936.717.327.735.728.88.3

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value8583161431140743578228
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition7.95.54.21.83.88.27.44.97.76.4

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value3585804426317510352642143272057
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition33.138.511.832.421.160.126.429.332.257.5

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2321301011325670215163190178
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition21.58.726.816.26.74.121.522.418.75.0

us-gaap:SovereignDebtSecurities


Debt
Period End2021-06-302021-03-31
Value4.4794.389
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.40.3

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value153522317237101811459674
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition14.234.68.28.94.55.98.22.05.818.8

us-gaap:USTreasuryAndGovernment


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value68572.695.0042071263325792
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition6.33.80.70.625.00.76.34.55.72.6

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value11335.08.767197410.08.3861177
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.1010.2220.0180.1452.7166.3110.1780.0650.1020.146
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.90.70.41.714.18.51.80.80.90.2

us-gaap:CollateralizedDebtObligations


Debt
Period End2020-12-312019-12-312018-12-31
Value0.6921.6435.294
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss13.816.46.8

us-gaap:CollateralizedLoanObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.0650.0560.6922.9758.355191.6431.6721.9295.294
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.60.213.833.943.226.016.419.916.96.8

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.9342.081.1250.8461.4113.1720.7790.2660.759.58
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss8.06.222.59.67.34.37.83.26.612.3

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5.966141.7282.7485.16413.0083.1513.13440
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss51.044.334.631.326.755.830.137.627.552.0

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.3961.410.8381.1470.3530.7583.2272.6634.7110
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss20.54.216.813.11.81.032.331.841.313.2

us-gaap:SovereignDebtSecurities


Debt
Period End2021-06-302021-03-31
Value0.0060.096
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.10.3

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.087140.2560.8911.2913.2580.8570.4940.64810
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss17.843.65.110.26.74.48.65.95.714.1

us-gaap:USTreasuryAndGovernment


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.1490.2220.0020.0150.0410.0210.210.0750.1271.076
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss1.30.70.00.20.20.02.10.91.11.4

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value98571324282933
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent

srt:ParentCompany


Deferred
Period End2020-12-312019-12-312018-12-31
Value219196186
Percentage of DeferredIncomeTaxesAndOtherTaxReceivableCurrent100.0100.0100.0

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredPolicyAcquisitionCosts


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2222212120191818171717181818181918181717161515141413121110109.72112121211109.538.7017.5057.6967.978.0968.2829.022
Percentage of DeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3863832586367919331043997683651
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.7769.278.6627.26512121115131719
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3.5422.1753.1134.99410152336556085
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value23303129403312-1.073
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value423412375411360
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2827282417
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation6.86.77.56.04.8

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value979810810810192
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-27.892-15.2813.629-15.576-18.079-23.951
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax-28.5-15.53.3-14.4-17.8-25.9

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-98.899-99.826-110.321-109.904-103.861
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3018-0.939106.088
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-30.9-18.00.9-9.3-5.9

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-988000.0-1237000.0-1513000.0-1850000.0-2286000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2673000.02724000.02690000.0-5342000.0-11991000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax-270.5-220.2-177.8288.8524.5

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.750.03450.0440.03750.043
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.350.0320.04250.03550.0395
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate85.592.896.694.791.9

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3.00.030.030.030.03
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value2.53.2
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value423413376417369349
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value282728241716
Percentage of DefinedBenefitPlanBenefitObligation6.86.77.55.94.74.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value135141143151
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value10111411
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter8.08.49.87.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value30343328
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.7651.61.3521.174
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths5.94.64.14.1

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value28303031
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.3572.3672.6132.044
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive8.27.78.66.4

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value29313031
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.2412.2542.3861.944
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour7.67.27.86.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value30303029
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.1572.0871.9161.689
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree7.26.76.35.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value29312833
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.9951.8471.651.368
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo6.76.05.84.1

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.2121010
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

mtg:PensionAndSupplementalPlans


Defined
Period End2021-03-31
Value6200000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-12.468-10.659-16.434-16.628-8.908
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value9072496053
Percentage of DefinedBenefitPlanFundedStatusOfPlan-724.3-676.4-302.3-364.4-595.3

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.00.060.06250.0650.065
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

srt:Maximum, us-gaap:CommoditiesInvestment, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value10.00.1
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

srt:Maximum, us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value100.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage1000.01000.0

srt:Maximum, us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value40.00.4
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage400.0400.0

srt:Maximum, us-gaap:FixedIncomeFunds, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value10.00.1
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

srt:Maximum, us-gaap:RealEstate, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value15.00.15
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage150.0150.0

srt:Minimum, us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value70.00.7
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage700.0700.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1 us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.00.050.050.050.05
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:DefinedBenefitPlanDebtSecurity, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value79.00.770.77
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value100.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations126.6129.9129.9

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value21.00.230.23
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations26.629.929.9

us-gaap:DueFromRelatedParties us-gaap:ConsolidatedEntities

us-gaap:DueFromRelatedParties

srt:ParentCompany


Due
Period End2020-12-312019-12-312018-12-31
Value1450000.02129000.01396000.0
Percentage of DueFromRelatedParties100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

mtg:RestrictedStockAndRestrictedStockUnits


Employee
Period End2020-12-31
Value25
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:PerformanceShares


Employee
Period End2020-12-31
Value19
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized76.7

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-31
Value5.9
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized22.9

us-gaap:EquitySecuritiesFvNiCost

us-gaap:EquitySecuritiesFvNiCost


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value14151717172917173.9913.993
Percentage of EquitySecuritiesFvNiCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiCost us-gaap:FinancialInstrument

us-gaap:EquitySecurities


Equity
Period End2020-12-312019-12-312018-12-31
Value17173.993
Percentage of EquitySecuritiesFvNiCost100.0100.0100.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value276282273268305334346351340332338347344350353349338332323318455500
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value208208208208256256256256256256256256256256256256256256256256256256389
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations75.474.076.377.884.176.874.273.075.477.276.073.974.573.272.773.476.077.379.580.80.00.085.6

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

mtg:RealEstateAcquired


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value0.5721.7941.0921.691.9636.2267.2527.7791011141213101211101011109.6421212107.995101216101113128.7417.5243.4633.0973.0742.341.6212.3242.8284.8766.226.8635.6714.7533.83
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvances

us-gaap:FederalHomeLoanBankAdvances


Federal
Period End2020-12-31
Value155
Percentage of FederalHomeLoanBankAdvances100.0

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1551551551551551551551551551551551551551551551551551551551551551550.0
Percentage of FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1


Federal
Period End2021-06-302021-03-312020-12-312020-09-30
Value163164163165
Percentage of FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1100.0100.0100.0100.0

us-gaap:InterestPayableCurrentAndNoncurrent us-gaap:ConsolidatedEntities

us-gaap:InterestPayableCurrentAndNoncurrent

srt:ParentCompany


Interest
Period End2020-12-312019-12-312018-12-31
Value231717
Percentage of InterestPayableCurrentAndNoncurrent100.0100.0100.0

us-gaap:Investments

us-gaap:Investments


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value698268296682636558835490575856815512529451594980493349374990
Percentage of Investments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value836000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-31
Value93691388084079757455560262165567472181392498511051187133514381535163217531893197921102244239625272675283430613352359940564557
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value93691388084079757455560262165567472181392498511051187133514381535163217531893197921102244239625272675283430613352359938484056400441084209455747915082547158846704
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value82581078575773354853358260362364068777587893710591142128813881488158717121848194120572189233824692617277629973282351537523951388639814066440246244876523356085879604963724542
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualAtCarryingValue


Loss
Period End2021-06-30
Value6300000.0
Percentage of LossContingencyAccrualAtCarryingValue100.0

us-gaap:NotesPayableFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:NotesPayableFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Notes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-12-31
Value15916016016116116115615615515315014814914915215415415215115963
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssetsFairValueDisclosure

us-gaap:OtherAssetsFairValueDisclosure


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value170183288380362365164161169205961213101211101011109.6421212107.995101216101113128.7417.5243.4633.0973.0742.341.6212.3242.8286.22
Percentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value170183275380362364164161169205960.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of OtherAssetsFairValueDisclosure100.0100.095.4100.0100.099.7100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2


Other
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value130.01.0020.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of OtherAssetsFairValueDisclosure4.60.00.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherInvestments

us-gaap:OtherInvestments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.03100000.00
Percentage of OtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherLiabilities

us-gaap:OtherLiabilities


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value216244244237217140151159164162180207227232255239236254238255244289247318356315309316271289275277243335283297300335312327332353349254
Percentage of OtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLiabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value1.1550.47411
Percentage of OtherLiabilities0.50.36.5

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:PremiumsReceivableAtCarryingValue


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5655565354535551575155515652545351515247464748515259576052546265627267686767717374757990
Percentage of PremiumsReceivableAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value111102958363252119183133333745484544465046454457
Percentage of ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments us-gaap:ReinsurancePolicyType

mtg:QuotaShareReinsuranceAgreements


Reinsurance
Period End2021-06-302021-03-312020-12-312019-12-31
Value1111029521
Percentage of ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments100.0100.0100.099.8

mtg:QuotaShareReinsuranceAgreementsExcludingCaptives


Reinsurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value836325211918313333364339353331
Percentage of ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments99.999.9100.299.899.799.499.899.699.598.595.781.176.973.963.0

us-gaap:ReinsuranceRecoverablesOnPaidLosses

us-gaap:ReinsuranceRecoverablesOnPaidLosses


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value0.7060.6060.6691.0621.3511.6911.5211.573163.0692.9483.1113.2953.7183.8724.6386.1515.1294.9644.6324.7733.8553.3194.2755.9185.9666.4246.457.51710
Percentage of ReinsuranceRecoverablesOnPaidLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value129.8368.7278.7554.6784.2237.2096.3296.2753.1613.1460.0
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:SeniorNotes

us-gaap:SeniorNotes


Senior
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8808798798784214214204204204204194194194184184184174174174170.06161616161616182828299999999170170244321376376377
Percentage of SeniorNotes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SeniorNotes us-gaap:ConsolidatedEntities

srt:ParentCompany


Senior
Period End2020-12-312019-12-312018-12-31
Value879420419
Percentage of SeniorNotes100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value4100000.04200000.03600000.03300000.03100000.03300000.03900000.03600000.03100000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:PerformanceShares


Share
Period End2020-12-31
Value3100000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber75.6

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-31
Value1000000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber24.4

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

mtg:RestrictedStockAndRestrictedStockUnits


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value13.5712.8112.278.787.447.976.335.15
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance


Statutory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1442138313391313124912711619163316341667168316221506160815851584748165716921442
Percentage of StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance dei:LegalEntity

mtg:MortgageGuarantyInsuranceCorporation


Statutory
Period End2020-12-312019-12-312018-12-31
Value133616191682
Percentage of StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance99.7100.099.9

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1


Stock
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-31
Value29129129129111125
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0100.0100.0100.0

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount


Summary
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6679575551554990469246634612486642305823
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:AllOtherCorporateBonds, us-gaap:FixedMaturities


Summary
Period End2020-12-31
Value2541
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount38.0

us-gaap:AssetBackedSecurities, us-gaap:FixedMaturities


Summary
Period End2020-12-31
Value206
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount3.1

us-gaap:CollateralizedLoanObligations, us-gaap:FixedMaturities


Summary
Period End2020-12-31
Value310
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount4.6

us-gaap:IndustrialMiscellaneousAndAllOthers, us-gaap:EquitySecuritiesInvestmentSummary


Summary
Period End2020-12-31
Value18
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount0.3

us-gaap:MortgageBackedSecurities, us-gaap:FixedMaturities


Summary
Period End2020-12-31
Value758
Percentage of SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount11.4

us-gaap:OtherDebtSecurities, us-gaap:FixedMaturities


Summary
Period End2020-12-31
Value21