HII


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

Table of contents



us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ProductOrService
us-gaap:CostOfGoodsAndServicesSold

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementEquityComponents

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:OtherIncome

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:Revenues
hii:Contracttype
hii:Contracttype, us-gaap:StatementBusinessSegments
hii:MajorPrograms, us-gaap:StatementBusinessSegments
us-gaap:MajorCustomers
us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:Assets
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:MachineryAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LongTermDebtNoncurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:AmortizationOfFinancingCosts

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:Dividends
us-gaap:StatementEquityComponents

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

hii:Accruedrepurchasesofcommonstock
hii:ContractName, us-gaap:ChangeInAccountingEstimateByType
hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResults
us-gaap:ChangeInAccountingEstimateByType
hii:ContractName, us-gaap:ChangeInAccountingEstimateByType
hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted
us-gaap:ChangeInAccountingEstimateByType

hii:Deferredgainonreceiptofproperty
us-gaap:AwardType
hii:EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions
us-gaap:Range, us-gaap:AwardType
us-gaap:StatementBusinessSegments
hii:FasCasAdjustment

hii:Grantproceedsforcapitalexpenditures

hii:IncreaseDecreaseinNetContractAssets

hii:NonoperatingretirementFASexpense

hii:Parentownershippercentageofsubsidiaryguarantors

hii:Repaymentoflineofcreditborrowings

hii:Revenueperformanceobligationrecognitionpercentageyearfour

hii:Revenueperformanceobligationrecognitionpercentageyeartwo
us-gaap:StatementBusinessSegments
hii:SalesRevenueIntersegmentNet

hii:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations
us-gaap:Range

hii:TreasuryStockValueAcquiredNotYetSettledforCash

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions
us-gaap:StatementEquityComponents

us-gaap:AssetImpairmentCharges

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:BusinessAcquisition
us-gaap:CashAcquiredFromAcquisition

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:Range, us-gaap:ConcentrationRiskByBenchmark
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:StatementBusinessSegments
us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation

us-gaap:DividendsCommonStockCash

us-gaap:EffectiveIncomeTaxRateReconciliationDispositionOfBusiness

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
us-gaap:Range

us-gaap:GainLossOnSaleOfBusiness
us-gaap:BusinessAcquisition

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInInventoryForLongTermContractsOrPrograms

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaid

us-gaap:LossContingencyNumberOfDefendants

us-gaap:MarketableSecuritiesGainLoss

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherPostretirementBenefitsPayments

us-gaap:PaymentsForAdvanceToAffiliate
us-gaap:BusinessAcquisition

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PensionAndOtherPostretirementBenefitContributions
hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfCashContribution, hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan
us-gaap:PensionContributions

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
us-gaap:BusinessAcquisition

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted

us-gaap:ShortTermLeaseCost

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease

us-gaap:VariableLeaseCost

dei:EntityCommonStockSharesOutstanding

dei:EntityNumberOfEmployees
us-gaap:StatementBusinessSegments

hii:DeferredTaxAssetNetoperatinglossesandtaxcreditcarryforwards

hii:DeferredTaxAssetTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits

hii:DeferredTaxAssetsOperatingLeaseLiabilities

hii:DeferredTaxAssetsTaxDeferredExpenseWorkersCompensation

hii:DeferredTaxLiabilitiesContractAccountingDifferences
us-gaap:RetirementPlanType
hii:DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate

hii:DefinedContributionPlanLiabilities

hii:DisposalGroupIncludingDiscontinuedOperationLeaseLiability
us-gaap:StatementBusinessSegments
hii:DisposalGroupsIncludingDiscontinuedOperationsValuationAllowance

hii:InventoryWorkInProcessAndGeneralAndAdministrativeCostsIncludedInInventoryNetOfReserves
us-gaap:Range, us-gaap:AwardType
hii:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPotentialVestingAsPercentageOfGrants
us-gaap:AwardType
hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsEBITDAPWeight
us-gaap:AwardType
hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsReturnonInvestedCapitalWeight

hii:WorkersCompensationLiabilityUndiscounted

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableNet

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedPayrollTaxesCurrentAndNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsHeldInTrust
hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
us-gaap:StatementBusinessSegments
us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType
us-gaap:BilledContractReceivables

us-gaap:BillingsInExcessOfCostCurrent

us-gaap:BuildingsAndImprovementsGross

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CommonStockValueOutstanding

us-gaap:ContractWithCustomerAssetNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsLiabilitiesNetNoncurrent

us-gaap:DeferredTaxAssetsOther
us-gaap:TaxCreditCarryforward
us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
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
hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
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:DefinedBenefitPlanFairValueOfPlanAssets
hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:RetirementPlanType
us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets
us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities
us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets
us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities
us-gaap:StatementBusinessSegments
us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss
us-gaap:StatementBusinessSegments
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:IncomeTaxesReceivable

us-gaap:InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:LandAndLandImprovements

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:CreditFacility
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
us-gaap:StatementBusinessSegments
us-gaap:CreditFacility, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:NotesReceivableNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
us-gaap:RetirementPlanType
us-gaap:PrescriptionDrugSubsidyReceiptsAfterYearFive

us-gaap:ReceivableWithImputedInterestDiscount

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ShortTermBorrowings
us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount
us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardValuationAllowance

us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:CreditFacility
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LongtermDebtType

us-gaap:UnbilledContractsReceivable
us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:WorkersCompensationLiabilityCurrent

us-gaap:WorkersCompensationLiabilityNoncurrent

Plots across concepts


IncomeStatement
Operating Income Loss
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Outstanding
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockSharesIssued ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁53.453.453.353.353.353.353.253.253.253.253.153.153.153.153.053.052.952.952.652.652.652.652.052.052.052.051.551.451.451.150.550.450.350.249.649.58310949.49430549445957.048.821563NANANA0.0NANA
us-gaap:CommonStockSharesAuthorized NANA150.0NA150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150000000.0150.0NANANA150.0NANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁40.240.340.540.540.540.540.841.041.441.641.943.043.544.645.145.345.546.246.246.546.947.146.947.248.148.648.348.548.649.248.749.549.850.249.649.58310949.49430549445957.048.821563NANA48.7658410.0NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁40.340.2NA40.740.740.7NA41.241.741.4NA43.344.344.8NA45.545.846.4NA47.247.547.4NA48.448.848.7NA49.049.149.7NA50.650.750.3NA50.350.149.5NA48.949.648.8NA48.848.8
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁40.340.2NA40.640.740.7NA41.241.741.4NA43.344.244.8NA45.445.746.3NA46.947.047.0NA48.048.548.4NA48.748.849.1NA49.950.249.8NA49.649.549.0NA48.948.848.8NA48.848.8
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:PerformanceShares▄▄0.40.4NA0.30.30.3NA0.30.30.3NA0.30.30.3NA0.30.30.4NA0.30.30.5NA0.60.80.8NA1.11.21.2NA1.31.41.4NA0.21.31.3NA0.7NANANANANA
us-gaap:EarningsPerShareBasic ▆▆██▅▇▆▆▆▆▇▇█▆▅▆▆▆▇▆▆▆▅▆▆▅▅▅▅▅▅▅▅▅▅▄▅▅▅▁▅▅▅▅▄3.23.686.155.471.34.233.623.743.072.854.965.295.413.481.413.283.222.574.262.282.832.891.072.313.221.81.071.972.051.831.861.381.140.881.010.261.010.671.37-5.070.810.921.290.86-0.23
us-gaap:EarningsPerShareDiluted ▆▆██▅▇▆▆▆▆▇▇█▆▅▆▆▆▇▆▆▆▅▆▆▅▅▅▅▅▅▅▅▅▅▄▅▅▅▁▅▅▅▅▄3.23.686.155.451.34.233.613.743.072.854.945.295.43.481.413.273.212.564.22.272.82.871.062.293.21.791.051.962.041.811.821.361.120.870.980.261.00.671.35-5.070.80.921.290.86-0.23
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 COGS Ratio us-gaap:ProductOrService us-gaap:Product▅▄█▄▁▃▄▃▂▂▃▃▂▁▂▁1763.01721.02107.01699.01420.01624.01710.01545.01520.01490.01607.01547.01499.01370.01485.01391.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:Service▁▄▆▅▅▆█▇▇▅▅▃▃▂▂▁468.0557.0650.0615.0607.0639.0702.0674.0668.0590.0592.0536.0521.0504.0511.0472.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments hii:Ingalls▅▅▇▅▄▄▆▅▄▃▆▆▄▃▄▄▄▃▄▃▃▃▃▄▃▁▄▃▃▃█▄▅▄▆▅▇▆▅▆▆670.0649.0752.0675.0622.0629.0702.0647.0622.0584.0699.0694.0629.0585.0638.0593.0639.0550.0641.0577.0585.0586.0580.0593.0546.0469.0608.0559.0572.0547.0815.0639.0672.0631.0722.0670.0756.0692.0676.0740.0708.0NANANANA
 Operating Margin us-gaap:StatementBusinessSegments hii:NewportNewsShipbuilding▅▆█▅▃▅▅▅▅▅▅▄▄▃▄▃▃▂▁▃▃▄▅▄▄▃▅▃▄▃▄▃▃▂▃▂▂▂▃▂▂1363.01407.01750.01358.01122.01341.01390.01264.01267.01265.01278.01179.01183.01082.01139.01053.01001.0971.0774.01072.01090.01153.01296.01177.01166.01061.01263.01097.01129.01047.01140.01018.01031.0950.01122.0944.0979.0895.01078.0876.0872.0NANANANA
 Operating Margin us-gaap:StatementBusinessSegments hii:TechnicalSolutions▄▅▆▆▆▆█▇▇▅▅▄▄▄▄▄▄▄▂▁▁▃237.0259.0311.0320.0320.0317.0369.0347.0336.0257.0267.0245.0243.0233.0242.0241.0244.0225.0186.0154.0143.0208.0NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 TTM Greenblatt ROC _ _▅▆█▇▄▇▆▇▆▆▇█▇▆▇▇▇▆▇▆▇▆▆▇▇▆▆▆▆▆▆▅▅▅▅▅▅▅▅▁▅▅128.0147.0305.0222.057.0215.0186.0214.0175.0161.0213.0290.0257.0191.0227.0237.0237.0164.0268.0175.0217.0198.0144.0200.0269.0156.0144.0171.0181.0159.0174.0127.0116.095.0106.066.0106.080.0121.0-190.091.085.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AllocatedShareBasedCompensationExpense ▁▃▃▁▂▃▄▃▃▂▃▄▃▃▃▃▆▂▆▄▂▂▆▃▇▁▅▄▂▂▆▃▄▃▆▃▃▃█▃▃3.09.07.03.06.07.011.07.07.05.09.011.08.07.07.07.014.06.014.011.06.05.014.08.017.04.012.011.06.05.016.09.010.09.016.09.08.08.020.09.09.0NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▅▅▄▅▄▅▃▅▅▄▃▅▅▅▄▄▅▄▄▄▅▅▄▄▅▄▁▄▄▄█▄▅▄▁▄▄▄▁▂▄▄▄▄▄151.0172.059.0241.071.0187.0-28.0173.0146.0137.0-6.0244.0252.0171.0113.0119.0163.0135.054.0120.0145.0148.031.0121.0169.0100.0-304.099.0106.096.0648.087.0185.046.0-359.030.063.048.0-297.0-240.047.062.046.049.02.0
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:Product▆▅█▅▃▄▅▃▃▃▃▂▂▁▂▁1495.01454.01690.01388.01253.01290.01404.01246.01250.01258.01258.01159.01147.01063.01125.01064.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:Service▂▄▆▅▅▇█▇█▅▄▃▂▃▂▁414.0482.0520.0490.0510.0550.0576.0556.0584.0494.0471.0434.0421.0432.0424.0384.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▅▅█▆▅▅▆▅▄▃█▅▅▄▃▁▁▁▄▂▂▁▅▂▃▂▆▄▃▂▅▄▄▃▆▃▃▂▂▂▃▂▄▃▃204.0206.0256.0220.0214.0214.0224.0209.0184.0171.0262.0208.0209.0192.0173.0135.0133.0129.0188.0147.0151.0137.0196.0150.0173.0150.0217.0189.0170.0150.0198.0186.0185.0170.0233.0164.0176.0150.0153.0153.0169.0149.0190.0158.0161.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▆█▇▅▇▆▇▆▆▇█▇▇▆▇▇▆▇▆▇▆▅▆▇▆▅▆▆▆▆▅▅▅▅▄▅▅▅▁▅▅▅▅161.0173.0303.0226.065.0216.0172.0198.0164.0149.0219.0295.0262.0195.0187.0220.0218.0147.0251.0157.0199.0177.080.0175.0244.0133.079.0144.0152.0132.0143.099.087.065.077.037.077.050.092.0-220.061.070.092.067.0NA
us-gaap:IncomeTaxExpenseBenefit ▄▃▅▂▃▄▃▄▄▃▂▅▃▄█▅▅▃▅▄▅▄▃▅▆▄▃▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▁32.025.054.04.012.044.023.044.036.031.07.066.023.039.0123.071.071.028.054.050.066.041.030.064.088.046.027.048.052.042.052.030.030.021.027.024.027.017.026.028.021.025.029.025.0-19.0
us-gaap:IncomeTaxesPaid NANA49.083.0NANA13.035.0NANA65.056.020.01.050.073.096.04.031.075.084.039.032.079.0105.026.029.038.064.030.0100.013.028.013.00.020.04.04.012.023.011.00.0NANANA
us-gaap:IncomeTaxesPaidNet █▁63.0-42.0NANA21.02.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ▂▂▆▃▃▂▂▂▂▂▂▂▂▂▅▂▂▂▂▂▂▂█▃▃▃█▃▃▃▄▃▃▄▃▃▃▄▃▄▄▂▁▁▁18.021.046.027.025.016.018.018.018.016.014.014.015.015.041.018.017.018.018.019.018.019.064.025.025.023.066.027.029.027.031.028.029.030.029.029.029.030.029.030.030.015.010.010.010.0
us-gaap:NetIncomeLoss ▆▇██▅▇▇▇▆▆▇██▇▅▇▇▆▇▆▆▆▅▆▇▆▅▆▆▆▆▅▅▅▅▅▅▅▅▁▅▅▅▅▄129.0148.0249.0222.053.0172.0149.0154.0128.0118.0212.0229.0239.0156.064.0149.0147.0119.0197.0107.0133.0136.050.0111.0156.087.052.096.0100.090.091.069.057.044.050.013.050.033.067.0-248.040.045.063.042.0-11.0
us-gaap:OperatingIncomeLoss ▅▆█▇▄▇▆▇▆▆▇█▇▆▇▇▇▆▇▆▇▆▆▇▇▆▆▆▆▆▆▅▅▅▅▅▅▅▅▁▅▅▅▅▃128.0147.0305.0222.057.0215.0186.0214.0175.0161.0213.0290.0257.0191.0227.0237.0237.0164.0268.0175.0217.0198.0144.0200.0269.0156.0144.0171.0181.0159.0174.0127.0116.095.0106.066.0106.080.0121.0-190.091.085.0104.077.0-20.0
us-gaap:OtherIncome ▁█-2.03.0NANANANANANANANANANA12.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▆▅█▅▅▁▄▄▆▅▅▄▅▅7.01.014.02.03.0-13.00.0-1.05.01.02.00.01.01.0NA1.0-2.01.0NA1.00.0-2.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▅▅█▅▄▅▆▅▅▄▅▄▄▃▄▃▃▂▃▂▂▂▃▂▂▁▃▂▂▁▃▁▂▁▃▁▂▁▂▁▁▂▂▂▁2231.02278.02757.02314.02027.02263.02412.02219.02188.02080.02199.02083.02020.01874.01996.01863.01858.01724.01922.01683.01700.01763.01905.01800.01745.01570.01927.01717.01719.01594.01938.01637.01683.01562.01823.01596.01721.01568.01735.01593.01563.01684.01736.01665.01610.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ▇▇▇█▇▆▄▅▅▄▃▂▃▃▃▂▂▂▃▂▁▁▂▂▃▃▂▂▂▂▂▂▂▂▃▁▁▁▂▁▂8132.08214.08157.08445.08233.07615.07031.07184.07230.07000.06383.06199.06375.06376.06374.06172.06190.06234.06352.06008.05859.05896.06024.06042.06312.06319.06269.06125.06080.06107.06225.06279.06047.06251.06392.05863.05812.05824.06001.05715.05937.0NA5203.0NANA
us-gaap:Liabilities ▆▇▇██▆▅▅▅▅▃▁▂▂▂▂▂▂▂▁▁▁▂▂▃▃▃▂▂▂▂▄▄▅▅▃▃▃▄▂▂6065.06235.06256.06565.06555.05972.05443.05479.05602.05437.04867.04374.04676.04658.04616.04460.04540.04596.04699.04356.04247.04375.04534.04552.04827.04939.04904.04463.04511.04546.04704.05344.05174.05544.05725.04825.04818.04906.05129.04560.04526.0NA3785.0NANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇▇█▇▆▄▅▅▄▃▂▃▃▃▂▂▂▃▂▁▁▂▂▃▃▂▂▂▂▂▂▂▂▃▁▁▁▂▁▂8132.08214.08157.08445.08233.07615.07031.07184.07230.07000.06383.06199.06375.06376.06374.06172.06190.06234.06352.06008.05859.05896.06024.06042.06312.06319.06269.06125.06080.06107.06225.06279.06047.06251.06392.05863.05812.05824.06001.05715.05937.0NA5203.0NANA
us-gaap:StockholdersEquity NANA1901.0NANANA1588.0NANANA1516.0NANANA1758.0NANANA1653.0NANANA1490.0NANANA1365.0NANANA1521.0935.0873.0707.0667.01038.0994.0918.0872.01155.01411.01362.01418.01487.01575.0
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncomeNANA-1547.0NANANA-1409.0NANANA-1288.0NANANA-900.0NANANA-951.0NANANA-845.0NANANA-862.0NANANA-521.0-1078.0-1096.0-1224.0-1226.0-804.0-821.0-834.0-849.0-483.0-491.0-498.0-515.0-498.0-505.0
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANA1972.0NANANA1961.0NANANA1954.0NANANA1942.0NANANA1964.0NANANA1978.0NANANA1959.0NANANA1925.01914.01904.01892.01894.01887.01873.01860.01862.01848.01864.01862.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:CommonStockNANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.01.01.01.0NANANA0.00.0NANA0.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANA3533.0NANANA3009.0NANANA2609.0NANANA1687.0NANANA1323.0NANANA848.0NANANA525.0NANANA236.0155.091.039.0NA-45.0-58.0-108.0-141.0-210.038.0-2.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:TreasuryStockNANA-2058.0NANANA-1974.0NANANA-1760.0NANANA-972.0NANANA-684.0NANANA-492.0NANANA-258.0NANANA-120.0-57.0-27.0-1.0-1.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ▅▅▅█▇▃▁▃▃▂▁▂▄▄▄▂▃▃▃▅▄▄▄▅▇▆▆▅▅▆▇▆▄▅▆▄▄▄▄▃▃2317.02443.02444.02881.02739.02137.01785.02025.02123.01922.01745.01859.02152.02210.02195.01939.02033.02063.02142.02344.02197.02203.02284.02419.02694.02628.02546.02380.02327.02544.02676.02531.02269.02391.02484.02226.02167.02156.02268.02082.01994.0NA1313.0NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▄▄▆▅▁▁▁▁▁▃▁▄▄▆▄▅▅▆▇▇▆▇▅▇▇█▆▅▆█▇▅▅█▆▅▅▇▅▄▂▁348.0407.0512.0744.0631.028.075.032.029.051.0240.068.0398.0528.0701.0499.0553.0608.0720.0957.0852.0793.0894.0671.0960.0904.0990.0769.0592.0742.01043.0895.0623.0652.01057.0766.0669.0551.0915.0536.0381.0225.00.0NANA
us-gaap:AccountsReceivableNetCurrent ▂▂▂▃▃▂▁▃▃▂▁▂▂▂▇▇▇▇▇▆▆▇▆██▇▆▇▇█▇▆▇▇▅▅▅▆▄▅▅443.0407.0397.0492.0494.0418.0318.0489.0564.0375.0252.0472.0364.0343.01188.01200.01201.01178.01164.01046.01022.01086.01074.01278.01244.01219.01038.01144.01216.01299.01123.01055.01101.01199.0905.0883.0878.0954.0711.0781.0898.0NA728.0NANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▃▄▂▂▂▂▁██▆▇▅█▅▇▃▄▂▂▄▂▂▂▂▂▂▃▁▂▁▁▁▂▁▁▂▂▂▂▂▂64.066.045.042.043.040.024.0147.0145.0119.0122.0100.0138.087.0123.057.075.047.048.073.043.041.031.036.039.037.050.028.046.025.029.023.045.021.021.031.041.032.030.034.040.0NA8.0NANA
us-gaap:MachineryAndEquipmentGross NANA2017.0NANANA1909.0NANANA1771.0NANANA1559.0NANANA1410.0NANANA1315.0NANANA1240.0NANANA1235.0NANANA1339.0NANANA1258.0NANANA1162.0NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross NANA5002.0NANANA4793.0NANANA4346.0NANANA3985.0NANANA3613.0NANANA3316.0NANANA3143.0NANANA3301.0NANANA3347.0NANANA3193.0NANANA3007.0NANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ███████████▇▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇2075.02055.02024.02009.01975.01939.01961.01935.01896.01862.01829.01796.0-1775.0-1806.01770.01730.01699.01661.01627.01592.01555.01519.01489.01453.01416.01388.01351.01525.01492.01456.01404.0NANANA1313.0NANANA1160.0NANANA1010.0NANA
us-gaap:AmortizationOfIntangibleAssets ▇▇███▅▆▆▆▅▄▅▄▄▅▅▄▅▃▂▂▂▃▂▂▃▄▄▂▂▁▂▂▂▁▂▂▂▂▂13.013.015.015.015.011.012.012.012.011.08.010.09.09.010.010.09.011.07.05.06.05.07.06.06.07.08.08.06.06.04.05.05.06.04.05.05.05.05.05.0NANANANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▆▆▆▅▄▄▄▄▃▃▂▂▂▁▁▁▁▁▁▁▂▂▂▂▂▂▂▃▂▂▂▃▂▂3004.02988.02978.02907.02879.02848.02832.02700.02626.02569.02517.02332.02258.02219.02215.02093.02034.01986.01986.01841.01813.01809.01827.01750.01757.01768.01792.01852.01850.01856.01897.01964.01990.02004.02034.01988.01992.02005.02033.01979.01985.0NA1997.0NANA
us-gaap:Goodwill ███▇▇█▆▆▆▆▅▄▄▄▄▄▄▄▄▂▂▂▂▂▂▃▃▃▃▂▁▁▁▁▁▁▁▁▁▁▄1604.01604.01617.01577.01576.01648.01373.01402.01403.01402.01263.01217.01217.01217.01217.01217.01218.01234.01234.0956.0956.0956.0956.0973.0973.01032.01026.01086.01089.0922.0881.0881.0881.0881.0881.0844.0844.0844.0844.0834.01134.0NA1134.0NANA
us-gaap:FiniteLivedIntangibleAssetsNet ▃▃▃▅▆▁▂▃▄▅▂▁▂▃▃▄▅▅▆▁▁▂▂▅▅▆▆▆▇▅▅▅▅▆▆▆▇▇██499.0512.0512.0527.0542.0481.0492.0506.0518.0530.0492.0480.0490.0499.0508.0518.0528.0537.0548.0479.0484.0490.0495.0528.0534.0540.0547.0551.0557.0528.0528.0532.0537.0542.0548.0552.0557.0562.0567.0572.0NANA587.0NANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA133.0NANANA108.0NANANA163.0NANANA114.0NANANA314.0NANANA336.0314.0336.0335.0341.049.067.071.087.0466.0432.0526.0542.0281.0314.0NA360.0NANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▆▄▄▃▁▃▅▆▇█208.0195.0192.0187.0174.0185.0201.0208.0216.0220.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent NANA2735.0NANANA2414.0NANANA2121.0NANANA1964.0NANANA2224.0NANANA1913.0NANANA1931.0NANANA1652.0NANANA1874.01649.01653.048.049.055.051.0NA41.0NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AccountsPayableCurrent ▃▄▅▄▅▆▆███▇▄▃▃▃▂▂▃▂▂▁▁▂▂▁▂▁▁▂▁▃▂▂▁▃▂▂▂▄▂▁349.0397.0460.0429.0437.0536.0497.0616.0616.0618.0562.0407.0378.0344.0375.0318.0325.0333.0316.0293.0252.0252.0317.0296.0269.0307.0269.0268.0297.0263.0337.0287.0287.0247.0377.0292.0314.0293.0380.0287.0255.0NA274.0NANA
us-gaap:ContractWithCustomerLiabilityCurrent ▇█▇▇▆▄▄▄▃▄▃▃▂▂▁660.0700.0585.0604.0573.0387.0373.0344.0338.0360.0331.0267.0210.0190.0146.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▇███▇▇▆▆▆▆▅▄▃▃▃▂▂▂▂▂▁▁▂▂▄▂▂▂▂▂▃▃▁▁▂▂▁▂▂▁▁2123.02290.02226.02233.02114.02080.01890.01950.01902.01960.01829.01631.01509.01463.01391.01275.01247.01273.01343.01228.01141.01155.01274.01294.01589.01332.01312.01234.01267.01240.01392.01402.01220.01177.01384.01239.01217.01252.01372.01207.01184.0NA2226.0NANA
us-gaap:OperatingLeaseLiabilityCurrent NANA37.035.029.034.035.036.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▆█▇▆▄▄▄▄▃▅▄▄▃▃▂▂▂▃▂▂▂▃▂▃▃▃▂▂▂▂▂▂▁▁▁▁▂▂▂▂447.0531.0462.0431.0350.0353.0323.0332.0307.0362.0332.0317.0277.0294.0236.0240.0219.0279.0256.0255.0222.0274.0247.0272.0264.0290.0249.0222.0244.0255.0262.0260.0209.0191.0205.0206.0229.0238.0249.0242.0NANA265.0NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebt ▄▄▄██▄▁▃▄▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▄▄▄▄▅▅▅▅▅▅▅▅1689.01688.01686.02278.02276.01667.01286.01549.01698.01496.01283.01282.01281.01280.01279.01282.01281.01280.01278.01277.01276.01275.01273.01305.01679.01700.01700.01743.01765.01779.01779.01808.01817.01817.01830.01837.01844.0NA1859.0NANANANANANA
us-gaap:LongTermDebtNoncurrent ▄▄▄██▄▁▃▄▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▃▄▄▄▄▄▄▅▅▅▅▅▅▅▅1689.01688.01686.02278.02276.01667.01286.01549.01698.01496.01283.01282.01281.01280.01279.01282.01281.01280.01278.01277.01276.01275.01273.01305.01305.01592.01592.01650.01679.01700.01700.01743.01765.01779.01779.01794.01808.01822.01830.01837.01844.0NA105.0NANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA401.0NANANA380.0NANANA348.0NANANA414.0NANANA431.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA960.0NANANA975.0NANANA764.0NANANA922.0NANANA1116.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ████▇▇▇▆▆▅▄▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▂▂▁▁▁▁▁▁▁▁▁▁318.0317.0315.0329.0296.0291.0291.0259.0255.0225.0189.0141.0130.0102.0101.099.095.089.090.099.088.0100.0103.0103.0102.0104.0105.099.0110.0106.0104.052.064.061.059.053.049.051.049.051.054.0NA56.0NANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▅▃▃▂▁▂▄▆▇█170.0159.0157.0153.0147.0153.0164.0172.0179.0184.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA38.044.041.039.038.042.042.040.036.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA32.034.030.031.030.036.037.034.030.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA28.029.025.025.024.029.029.027.020.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA25.025.022.023.022.022.022.020.013.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA105.0128.0119.0121.0114.0127.0125.0119.056.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity NANA1901.0NANANA1588.0NANANA1516.0NANANA1758.0NANANA1653.0NANANA1490.0NANANA1365.0NANANA1521.0935.0873.0707.0667.01038.0994.0918.0872.01155.01411.01362.01418.01487.01575.0
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncomeNANA-1547.0NANANA-1409.0NANANA-1288.0NANANA-900.0NANANA-951.0NANANA-845.0NANANA-862.0NANANA-521.0-1078.0-1096.0-1224.0-1226.0-804.0-821.0-834.0-849.0-483.0-491.0-498.0-515.0-498.0-505.0
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANA1972.0NANANA1961.0NANANA1954.0NANANA1942.0NANANA1964.0NANANA1978.0NANANA1959.0NANANA1925.01914.01904.01892.01894.01887.01873.01860.01862.01848.01864.01862.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:CommonStockNANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.0NANANA1.01.01.01.0NANANA0.00.0NANA0.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANA3533.0NANANA3009.0NANANA2609.0NANANA1687.0NANANA1323.0NANANA848.0NANANA525.0NANANA236.0155.091.039.0NA-45.0-58.0-108.0-141.0-210.038.0-2.00.0NANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:TreasuryStockNANA-2058.0NANANA-1974.0NANANA-1760.0NANANA-972.0NANANA-684.0NANANA-492.0NANANA-258.0NANANA-120.0-57.0-27.0-1.0-1.0NANANANANANANANANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇▇▆▆▆▆▆▅▅▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▄▆▆▅▅▂▂▁▁▃▃▂▂▃2067.01979.01901.01880.01678.01643.01588.01705.01628.01563.01516.01825.01699.01718.01758.01712.01650.01638.01653.01652.01612.01521.01490.01490.01485.01380.01365.01662.01569.01561.01521.0935.0873.0707.0667.01038.0994.0918.0872.01155.0NANA1418.0NANA
us-gaap:AdditionalPaidInCapitalCommonStock ███▇▇▇▇▆▆▆▇▆▅▅▆▅▅▄▇▆▆▅█▆▆▅▇▄▃▄▅▄▄▃▃▃▂▁▁1977.01974.01972.01964.01961.01955.01961.01950.01943.01936.01954.01944.01932.01924.01942.01935.01928.01914.01964.01949.01939.01933.01978.01948.01942.01922.01959.01907.01896.01904.01925.01914.01904.01892.01894.01887.01873.01860.01862.0NANANA0.0NANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▇▆▆▆▆▅▅▅▄▄▄▃▃▃▃▂▂▂▂▂▂▂▁▁▁3718.03635.03533.03330.03150.03139.03009.02902.02783.02691.02609.02434.02236.02029.01687.01656.01534.01414.01323.01154.01069.0960.0848.0821.0729.0593.0525.0492.0406.0316.0236.0NANANANA-45.0-58.0-108.0-141.0NANANA0.0NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▂▂▂▂▃▃▃▃▄▄▄▅▅▅▅▅▆▆▆▆▆▆▆▆████▄▄▃▃-1501.0-1523.0-1547.0-1357.0-1376.0-1394.0-1409.0-1232.0-1251.0-1269.0-1288.0-1070.0-1085.0-1098.0-900.0-949.0-919.0-935.0-951.0-808.0-821.0-833.0-845.0-826.0-836.0-849.0-862.0-506.0-509.0-515.0-521.0-1078.0-1096.0-1224.0-1226.0NANA-834.0-849.0-483.0-491.0NA-515.0NANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents hii:AOCIOtherNANA-1.0NANANA-2.0NANANA-5.0NANANA6.0NANANA-3.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedDefinedBenefitPlansAdjustment▁▁▁▂▂▂▂▃▃▃▃▄▄▄▅▅▅▅▅▆▆▆▆▆▆▆▆████▄▄▃▃-1502.0-1524.0-1546.0-1355.0-1373.0-1390.0-1407.0-1228.0-1246.0-1264.0-1283.0-1065.0-1080.0-1095.0-906.0-953.0-921.0-935.0-948.0-807.0-819.0-831.0-843.0-824.0-838.0-850.0-864.0-508.0-513.0-518.0-523.0-1080.0-1097.0-1225.0-1226.0NANANA-862.0NANANA-532.0NANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▅▅▄▃▂▂▃▂▁▁▁▁▁▂█▇▅1.01.0-1.0-2.0-3.0-4.0-2.0-4.0-5.0-5.0-5.0-5.0-5.0-3.06.04.02.0NA-3.0-1.0-2.0-2.0-2.0-2.02.01.02.02.04.03.02.02.01.01.0NANANANANANANANANANANA
us-gaap:TreasuryStockValue ██████▇▇▇▇▇▆▆▅▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁2128.02108.02058.02058.02058.02058.01974.01916.01848.01796.01760.01484.01385.01138.0972.0931.0894.0756.0684.0644.0576.0540.0492.0454.0351.0287.0258.0232.0225.0145.0120.057.027.01.01.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▄█▅▅▄▇▆▃▄█▃▅▄▇▄▅▄▆▅▅▄▆▅▅▃▆▅▅▂▆▅▄▁▆▄▅▁▇▅▅▁▅▅96.043.0602.0222.0201.068.0566.0363.0-44.011.0648.0-93.0239.0120.0434.096.0186.098.0345.0254.0169.054.0411.0254.0166.0-3.0402.0256.0272.0-214.0292.0281.025.0-362.0373.0137.0151.0-329.0474.0232.0186.0-364.0208.0173.0NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▅▇▇▂▆▆▆▄▅▆▆▇▆▇▇▇▁▇▇▇▆▇██▇▇▄▇▇█▇▇▇▇▇▇▇▇▇▇▆▇-88.0-46.0-173.0-67.0-75.0-444.0-157.0-109.0-92.0-269.0-209.0-102.0-95.0-70.0-133.0-83.0-75.0-58.0-512.0-60.0-44.0-37.0-102.0-37.0-8.06.0-74.0-39.0-254.0-70.0-54.028.0-25.0-30.0-70.0-35.0-30.0-27.0-78.0-36.0-20.0-63.0-93.0-36.0NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▁▄▇▆▃▃▅▅▃▄▃▃▄▄▄▄▄▄▄▄▄▂▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▄▄█▄▄-67.0-102.0-661.0-42.0477.0329.0-366.0-251.0114.069.0-267.0-135.0-274.0-223.0-99.0-67.0-166.0-152.0-70.0-89.0-66.0-118.0-86.0-506.0-102.0-89.0-107.0-40.0-168.0-17.0-90.0-37.0-29.0-13.0-12.0-5.0-3.0-8.0-17.0-41.0-10.0652.0-115.0-137.0NA
us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease ▃▃▂▅█▃▄▄▄▂▅▂▃▃▅▃▃▃▂▅▄▃▅▂▄▃▅▅▃▂▅▆▄▁▆▄▅▁▆▅▅▅-59.0-105.0-232.0113.0603.0-47.043.03.0-22.0-189.0172.0-330.0-130.0-173.0202.0-54.0-55.0-112.0-237.0105.059.0-101.0223.0-289.056.0-86.0221.0177.0-150.0-301.0148.0272.0-29.0-405.0291.097.0118.0-364.0379.0155.0156.0225.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AmortizationOfFinancingCosts ▃▆▆▆▆▃▃▃▁▃▃▃▃▃▆▃▃▆▃▃▃▆▆▃▆███▆██▆▆▆█▆▆▆▆▆▆▁1.02.02.02.02.01.01.01.00.01.01.01.01.01.02.01.01.02.01.01.01.02.02.01.02.03.03.03.02.03.03.02.02.02.03.02.02.02.02.02.02.00.0NANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▅▅▄▅▆▆▃▄▇▆▁▅▅▇▅▅▅▅▅▅▄▅▃▅▅▇▄▄▄▇▆▅▄█▅▅▄▇▄▄▅▇▅▅35.010.0-94.0-3.074.093.0-172.0-78.0189.0112.0-387.08.015.0169.0-12.0-13.017.043.050.024.0-64.012.0-204.034.022.0189.0-106.0-72.0-124.0162.068.0-46.0-98.0294.022.05.0-76.0243.0-70.0-118.03.0168.0-28.043.0NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▄█▅▅▄▇▆▃▄█▃▅▄▇▄▅▄▆▅▅▄▆▅▅▃▆▅▅▂▆▅▄▁▆▄▅▁▇▅▅▁▅▅96.043.0602.0222.0201.068.0566.0363.0-44.011.0648.0-93.0239.0120.0434.096.0186.098.0345.0254.0169.054.0411.0254.0166.0-3.0402.0256.0272.0-214.0292.0281.025.0-362.0373.0137.0151.0-329.0474.0232.0186.0-364.0208.0173.0NA
us-gaap:NetIncomeLoss ▆▇██▅▇▇▇▆▆▇██▇▅▇▇▆▇▆▆▆▅▆▇▆▅▆▆▆▆▅▅▅▅▅▅▅▅▁▅▅▅▅▄129.0148.0249.0222.053.0172.0149.0154.0128.0118.0212.0229.0239.0156.064.0149.0147.0119.0197.0107.0133.0136.050.0111.0156.087.052.096.0100.090.091.069.057.044.050.013.050.033.067.0-248.040.045.063.042.0-11.0
us-gaap:ShareBasedCompensation ▁▃▃▁▂▃▄▃▃▂▃▅▃▃▃▃▆▂▆▄▂▂▆▃▇▁▅▄▂▂▆▃▄▃▆▃▃▃█▃▃▁3.09.07.03.06.07.011.07.07.05.09.012.08.07.07.07.014.06.014.011.06.05.014.08.017.04.012.011.06.05.016.09.010.09.016.09.08.08.020.09.09.04.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▅▇▇▂▆▆▆▄▅▆▆▇▆▇▇▇▁▇▇▇▆▇██▇▇▄▇▇█▇▇▇▇▇▇▇▇▇▇▆▇-88.0-46.0-173.0-67.0-75.0-444.0-157.0-109.0-92.0-269.0-209.0-102.0-95.0-70.0-133.0-83.0-75.0-58.0-512.0-60.0-44.0-37.0-102.0-37.0-8.06.0-74.0-39.0-254.0-70.0-54.028.0-25.0-30.0-70.0-35.0-30.0-27.0-78.0-36.0-20.0-63.0-93.0-36.0NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▃▆▃▄▃█▅▆▅█▅▅▃▇▄▄▃▆▃▂▂▅▂▁▁▃▂▁▁▂▁▁▁▃▂▁▁▄▂▁▃▄▂74.060.0133.070.079.071.0181.0115.0124.0110.0170.0116.0102.075.0154.091.079.058.0140.060.048.037.0102.037.029.020.074.040.027.024.054.030.025.030.070.035.030.027.078.036.020.063.095.036.0NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▁▄▇▆▃▃▅▅▃▄▃▃▄▄▄▄▄▄▄▄▄▂▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▄▄█▄▄-67.0-102.0-661.0-42.0477.0329.0-366.0-251.0114.069.0-267.0-135.0-274.0-223.0-99.0-67.0-166.0-152.0-70.0-89.0-66.0-118.0-86.0-506.0-102.0-89.0-107.0-40.0-168.0-17.0-90.0-37.0-29.0-13.0-12.0-5.0-3.0-8.0-17.0-41.0-10.0652.0-115.0-137.0NA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA0.00.00.00.01775.0NANANA
us-gaap:PaymentsOfDividendsCommonStock ███▇▇▇▇▆▆▆▆▅▆▆▆▅▅▅▅▄▄▄▄▃▄▃▃▂▂▂▂▁▁▁46.046.046.042.042.042.042.035.036.036.037.031.032.032.033.027.027.028.028.022.024.024.023.019.020.019.019.010.010.010.010.05.05.05.0NANANANANANANANANANANA
us-gaap:Dividends ▄▄46.046.0NA42.042.042.0NA35.036.036.0NA31.032.032.0NA27.027.028.0NA22.024.024.0NA19.020.019.0NA10.010.010.0NA5.05.05.0NANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▂▂▁▁▁▃▃▃▃▃█▄█▆▂▂▅▃▂▃▂▂▂▄▃▂▂▁▄▁▃▂21.049.00.00.00.084.060.066.052.084.0230.0104.0242.0166.039.040.0139.068.042.066.042.044.040.0102.061.029.026.08.094.010.066.028.0NANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType hii:GulfOpportunityZoneIndustrialDevelopmentRevenueBondsDueDecember12028455Percent,us-gaap:BondsNANA4.55e-06NA4.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-084.55e-08NA4.55e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType hii:MississippiEconcomicDevelopmentRevenueBondsDueMay12014781Percent,us-gaap:BondsNANA7.81e-06NANANA7.81e-08NANANA7.81e-08NANANA7.81e-08NANANA7.81e-08NANANA7.81e-08NANANA7.81e-08NANA7.81e-087.81e-087.81e-087.81e-087.81e-087.81e-087.81e-087.81e-08NA7.81e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType hii:SeniorNotesDueNovember1520255.000,us-gaap:SeniorNotesNANANA5e-065.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-08NANANANANANANANANANANANANANANANANANANANANANA

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-03-302010-12-31
Value535353535353535353535353535353535252525252525252525251515151505050504949494944595748480.0
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150000000150150
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-03-312010-12-31
Value404040404040404141414143434445454546464646474647484848484849484949504949494944595748480.0
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value40404040404141414344444545464747474848484949495050505050494849484848
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value40404040404141414344444545464647474848484848494950494949494848484848
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

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:PerformanceShares


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value400000.0400000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0300000.0400000.0300000.0300000.0500000.0600000.0800000.0800000.01100000.01200000.01200000.01300000.01400000.01400000.0200000.01300000.01300000.0700000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.23.686.155.471.34.233.623.743.072.854.965.295.413.481.413.283.222.574.262.282.832.891.072.313.221.81.071.972.051.831.861.381.140.881.010.261.010.671.37-5.070.810.921.290.86-0.23
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.23.686.155.451.34.233.613.743.072.854.945.295.43.481.413.273.212.564.22.272.82.871.062.293.21.791.051.962.041.811.821.361.120.870.980.261.00.671.35-5.070.80.921.290.86-0.23
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3.09.07.03.06.07.0117.07.05.09.0118.07.07.07.0146.014116.05.0148.0174.012116.05.0169.010.09.0169.08.08.0209.09.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.10.40.30.10.30.30.50.30.30.20.40.50.40.40.40.40.80.30.70.70.40.30.70.41.00.30.60.60.30.30.80.50.60.60.90.60.50.51.20.60.6

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
Value1511725924171187-28.0173146137-6.02442521711131191631355412014514831121169100-304.099106966488718546-359.0306348-297.0-240.0476246492.0
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 Revenues6.87.62.110.43.58.3-1.27.86.76.6-0.311.712.59.15.76.48.87.82.87.18.58.41.66.79.76.4-15.85.86.26.033.45.311.02.9-19.71.93.73.1-17.1-15.13.03.72.62.90.1

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

us-gaap:Product


Cost
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
Value1495145416901388125312901404124612501258125811591147106311251064
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues67.063.861.360.061.857.058.256.257.160.557.255.656.856.756.457.1
Percentage of Revenues us-gaap:Product84.884.50.081.788.279.40.080.682.284.40.074.976.577.60.076.5

us-gaap:Service


Cost
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
Value414482520490510550576556584494471434421432424384
Percentage of CostOfGoodsAndServicesSold27.733.130.835.340.742.641.044.646.739.337.437.436.740.637.736.1
Percentage of Revenues18.621.218.921.225.224.323.925.126.723.821.420.820.823.121.220.6
Percentage of Revenues us-gaap:Service88.586.50.079.784.086.10.082.587.483.70.081.080.885.70.081.4

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
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
Value204206256220214214224209184171262208209192173135133129188147151137196150173150217189170150198186185170233164176150153153169149190158161
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.19.09.39.510.69.59.39.48.48.211.910.010.310.28.77.27.27.59.88.78.97.810.38.39.99.611.311.09.99.410.211.411.010.912.810.310.29.68.89.610.88.810.99.510.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1611733032266521617219816414921929526219518722021814725115719917780175244133791441521321439987657737775092-220.061709267
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.27.611.09.83.29.57.18.97.57.210.014.213.010.49.411.811.78.513.19.311.710.04.29.714.08.54.18.48.88.37.46.05.24.24.22.34.53.25.3-13.83.94.25.34.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3225544.01244234436317.06623391237171285450664130648846274852425230302127242717262821252925-19.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.41.12.00.20.61.91.02.01.61.50.33.21.12.16.23.83.81.62.83.03.92.31.63.65.02.91.42.83.02.62.71.81.81.31.51.51.61.11.51.81.31.51.71.5-1.2

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value8.07.05.06.06.06.06.07.06.06.05.05.06.05.09.09.09.09.04.08.07.08.055-7.0-10.0-8.024-3.0-3.0-3.081-11.0-11.0-13.0
Percentage of IncomeTaxExpenseBenefit25.028.09.3150.050.013.626.115.916.719.471.47.626.112.87.312.712.732.17.416.010.619.5183.3-10.9-11.4-17.488.9-6.2-5.8-7.1155.8-36.7-36.7-61.9
Percentage of Revenues0.40.30.20.30.30.30.20.30.30.30.20.20.30.30.50.50.50.50.20.50.40.52.9-0.4-0.6-0.51.2-0.2-0.2-0.24.2-0.7-0.7-0.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value498313356556201.05073964.031758439327910526293864301001328130.0204.04.01223110.0
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0
Percentage of Revenues1.83.60.51.63.02.71.00.12.53.95.20.21.64.54.92.21.74.46.01.71.52.23.71.95.20.81.70.80.01.30.20.30.71.40.70.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value63-42.0212.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0
Percentage of Revenues2.8-1.81.00.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value18214627251618181816141415154118171818191819642525236627292731282930292929302930301510.010.010.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.80.91.71.21.20.70.70.80.80.80.60.70.70.82.11.00.91.00.91.11.11.13.41.41.41.53.41.61.71.71.61.71.71.91.61.81.71.91.71.91.90.90.60.60.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12914824922253172149154128118212229239156641491471191971071331365011115687529610090916957445013503367-248.040456342-11.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.86.59.09.62.67.66.26.95.95.79.611.011.88.33.28.07.96.910.26.47.87.72.66.28.95.52.75.65.85.64.74.23.42.82.70.82.92.13.9-15.62.62.73.62.5-0.7

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
Value12914824922253172149154128118212229239156641491471191971071331365011115687529610090916957445013503369-248.040-2.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0103.0100.0100.0-4.4
Percentage of Revenues5.86.59.09.62.67.66.26.95.95.79.611.011.88.33.28.07.96.910.26.47.87.72.66.28.95.52.75.65.85.64.74.23.42.82.70.82.92.14.0-15.62.6-0.1
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

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
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
Value12814730522257215186214175161213290257191227237237164268175217198144200269156144171181159174127116951066610680121-190.0918510477-20.0
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.76.511.19.62.89.57.79.68.07.79.713.912.710.211.412.712.89.513.910.412.811.27.611.115.49.97.510.010.510.09.07.86.96.15.84.16.25.17.0-11.95.85.06.04.6-1.2

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

hii:Ingalls


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value809196625568596169468482836475749866856688825977198457255594365493526381.0382025-281.019
Percentage of OperatingIncomeLoss62.561.931.527.996.531.631.728.539.428.639.428.332.333.533.031.241.440.231.737.740.641.441.038.573.628.850.032.232.627.037.438.630.227.435.81.535.825.020.7147.920.9
Percentage of Revenues3.64.03.52.72.73.02.42.73.22.23.83.94.13.43.84.05.33.84.43.95.24.73.14.311.32.93.73.23.42.73.43.02.11.72.10.12.21.31.4-17.61.2
Percentage of Revenues hii:Ingalls11.914.00.09.28.810.80.09.411.17.90.011.813.210.90.012.515.312.00.011.415.014.00.013.036.39.60.09.810.37.90.07.75.24.10.00.15.02.90.0-38.02.7

hii:NewportNewsShipbuilding


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value769312879-69.09513310970785711991511069680721167910289120100109931161011049410493101941028889811029479
Percentage of OperatingIncomeLoss59.463.342.035.6-121.144.271.550.940.048.426.841.035.426.746.740.533.843.943.345.147.044.983.350.040.559.680.659.157.559.159.873.287.198.996.2133.384.0101.284.3-49.586.8
Percentage of Revenues3.44.14.63.4-3.44.25.54.93.23.82.65.74.52.75.35.24.34.26.04.76.05.06.35.66.25.96.05.96.15.95.45.76.06.05.65.55.25.25.95.95.1
Percentage of Revenues hii:NewportNewsShipbuilding5.66.60.05.8-6.17.10.08.65.56.20.010.17.74.70.09.18.07.40.07.49.47.70.08.59.38.80.09.29.29.00.09.19.89.90.09.39.19.10.010.79.1

hii:TechnicalSolutions


Operating
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
Value137.018219.0-7.0-19.021-1.05.07.0167.02.08.0229.0-18.01.06.0-2.03.0
Percentage of OperatingIncomeLoss10.24.85.99.515.8-3.3-10.29.8-0.63.13.35.52.71.03.59.33.8-11.00.43.4-0.91.5
Percentage of Revenues0.60.30.70.90.4-0.3-0.80.9-0.00.20.30.80.30.10.41.20.5-1.00.10.4-0.10.2
Percentage of Revenues hii:TechnicalSolutions5.52.70.06.62.8-2.20.06.1-0.31.90.06.52.90.90.09.13.7-8.00.03.9-1.41.4

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value169191242162-5.015617319113812914821718111718919218712022514018416612417224312813415116313716914213612014089127101127-187.098
Percentage of OperatingIncomeLoss132.0129.979.373.0-8.872.693.089.378.980.169.574.870.461.383.381.078.973.284.080.084.883.886.186.090.382.193.188.390.186.297.1111.8117.2126.3132.1134.8119.8126.2105.098.4107.7
Percentage of Revenues7.68.48.87.0-0.26.97.28.66.36.26.710.49.06.29.510.310.17.011.78.310.89.46.59.613.98.27.08.89.58.68.78.78.17.77.75.67.46.47.3-11.76.3
Percentage of Revenues us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312018-06-30
Value-2.03.012
Percentage of OtherIncome100.0100.0100.0
Percentage of Revenues-0.10.10.6

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value7.01.0142.03.0-13.00.0-1.05.01.02.00.01.01.01.0-2.01.01.00.0-2.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0
Percentage of Revenues0.30.00.50.10.1-0.60.0-0.00.20.00.10.00.00.10.1-0.10.10.10.0-0.1

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value223122782757231420272263241222192188208021992083202018741996186318581724192216831700176319051800174515701927171717191594193816371683156218231596172115681735159315631684173616651610
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues hii:Contracttype

hii:Costtype


Revenueshii:
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
Value7928359878498099228349139501011969885874830
Percentage of Revenues35.536.735.836.739.940.734.641.143.448.644.142.543.344.3
Percentage of Revenues35.536.735.836.739.940.734.641.143.448.644.142.543.344.3
Percentage of Revenues hii:Costtype100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Fixedpriceincentive


Revenueshii:
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
Value132313201618128810281161134110971051931109110411008904
Percentage of Revenues59.357.958.755.750.751.355.649.448.044.849.650.049.948.2
Percentage of Revenues59.357.958.755.750.751.355.649.448.044.849.650.049.948.2
Percentage of Revenues hii:Fixedpriceincentive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract


Revenueshii:
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
Value61586072797611789815543666067
Percentage of Revenues2.72.52.23.13.93.44.94.03.72.62.03.23.03.6
Percentage of Revenues2.72.52.23.13.93.44.94.03.72.62.03.23.03.6
Percentage of Revenues us-gaap:FixedPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract


Revenueshii:
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
Value5565921051111041201201068396917873
Percentage of Revenues2.52.93.34.55.54.65.05.44.84.04.44.43.93.9
Percentage of Revenues2.52.93.34.55.54.65.05.44.84.04.44.43.93.9
Percentage of Revenues us-gaap:TimeAndMaterialsContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues hii:Contracttype, us-gaap:StatementBusinessSegments

hii:Costtype, hii:Ingalls


Revenueshii:
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
Value4240576070909810610889107928375
Percentage of Revenues1.91.82.12.63.54.04.14.84.94.34.94.44.14.0
Percentage of Revenues1.91.82.12.63.54.04.14.84.94.34.94.44.14.0
Percentage of Revenues hii:Costtype hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Costtype, hii:NewportNewsShipbuilding


Revenueshii:
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
Value639675832668626699617682704810767703699662
Percentage of Revenues28.629.630.228.930.930.925.630.732.238.934.933.734.635.3
Percentage of Revenues28.629.630.228.930.930.925.630.732.238.934.933.734.635.3
Percentage of Revenues hii:Costtype hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Costtype, hii:TechnicalSolutions


Revenueshii:
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
Value1111209812111313311912513811295909293
Percentage of Revenues5.05.33.65.25.65.94.95.66.35.44.34.34.65.0
Percentage of Revenues5.05.33.65.25.65.94.95.66.35.44.34.34.65.0
Percentage of Revenues hii:Costtype hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Fixedpriceincentive, hii:Ingalls


Revenueshii:
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
Value610595683606535523573519490478584569528486
Percentage of Revenues27.326.124.826.226.423.123.823.422.423.026.627.326.125.9
Percentage of Revenues27.326.124.826.226.423.123.823.422.423.026.627.326.125.9
Percentage of Revenues hii:Fixedpriceincentive hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Fixedpriceincentive, hii:NewportNewsShipbuilding


Revenueshii:
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
Value713722906682493638768578560453507472480417
Percentage of Revenues32.031.732.929.524.328.231.826.025.621.823.122.723.822.3
Percentage of Revenues32.031.732.929.524.328.231.826.025.621.823.122.723.822.3
Percentage of Revenues hii:Fixedpriceincentive hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Fixedpriceincentive, hii:TechnicalSolutions


Revenueshii:
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.03.00.00.01.00.00.00.01.0
Percentage of Revenues0.00.10.00.00.00.00.00.00.1
Percentage of Revenues0.00.10.00.00.00.00.00.00.1
Percentage of Revenues hii:Fixedpriceincentive hii:TechnicalSolutions0.0100.00.00.0100.00.00.00.0100.0

hii:Intersegment, hii:Ingalls


Revenueshii:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value5.03.02.00.01.01.01.01.01.00.02.0
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.00.1
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.00.1
Percentage of Revenues hii:Intersegment hii:Ingalls100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0

hii:Intersegment, hii:NewportNewsShipbuilding


Revenueshii:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value4.02.05.03.02.02.03.02.02.02.02.03.0
Percentage of Revenues0.20.10.20.10.10.10.10.10.10.10.10.1
Percentage of Revenues0.20.10.20.10.10.10.10.10.10.10.10.1
Percentage of Revenues hii:Intersegment hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Intersegment, hii:TechnicalSolutions


Revenueshii:
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
Value3032493634214536342643313226
Percentage of Revenues1.31.41.81.61.70.91.91.61.61.22.01.51.61.4
Percentage of Revenues1.31.41.81.61.70.91.91.61.61.22.01.51.61.4
Percentage of Revenues hii:Intersegment hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Intersegment, us-gaap:IntersegmentElimination


Revenueshii:
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-39.0-37.0-56.0-39.0-37.0-24.0-49.0-39.0-37.0-26.0-45.0-35.0-35.0-26.0
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4
Percentage of Revenues hii:Intersegment us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, hii:Ingalls


Revenueshii:
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
Value131110.09.01615302123178.0311824
Percentage of Revenues0.60.50.40.40.80.71.20.91.10.80.41.50.91.3
Percentage of Revenues0.60.50.40.40.80.71.20.91.10.80.41.50.91.3
Percentage of Revenues us-gaap:FixedPriceContract hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, hii:NewportNewsShipbuilding


Revenueshii:
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
Value7.08.07.05.01.02.02.02.01.02.02.02.01.03.0
Percentage of Revenues0.30.40.30.20.00.10.10.10.00.10.10.10.00.2
Percentage of Revenues0.30.40.30.20.00.10.10.10.00.10.10.10.00.2
Percentage of Revenues us-gaap:FixedPriceContract hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, hii:TechnicalSolutions


Revenueshii:
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
Value4139435862598566573633334140
Percentage of Revenues1.81.71.62.53.12.63.53.02.61.71.51.62.02.1
Percentage of Revenues1.81.71.62.53.12.63.53.02.61.71.51.62.02.1
Percentage of Revenues us-gaap:FixedPriceContract hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract, hii:TechnicalSolutions


Revenueshii:
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
Value5565921051111041201201068396917873
Percentage of Revenues2.52.93.34.55.54.65.05.44.84.04.44.43.93.9
Percentage of Revenues2.52.93.34.55.54.65.05.44.84.04.44.43.93.9
Percentage of Revenues us-gaap:TimeAndMaterialsContract hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues hii:MajorPrograms, us-gaap:StatementBusinessSegments

hii:Aircraftcarriers, hii:NewportNewsShipbuilding


Revenueshii:
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
Value728758969733656698712707746713717647654587
Percentage of Revenues32.633.335.131.732.430.829.531.934.134.332.631.132.431.3
Percentage of Revenues32.633.335.131.732.430.829.531.934.134.332.631.132.431.3
Percentage of Revenues hii:Aircraftcarriers hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Amphibiousassaultships, hii:Ingalls


Revenueshii:
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
Value349357390338328347365349325297377356327288
Percentage of Revenues15.615.714.114.616.215.315.115.714.914.317.117.116.215.4
Percentage of Revenues15.615.714.114.616.215.315.115.714.914.317.117.116.215.4
Percentage of Revenues hii:Amphibiousassaultships hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Governmentandenergyservices, hii:TechnicalSolutions


Revenueshii:
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
Value237245261259260253296284280208210194201194
Percentage of Revenues10.610.89.511.212.811.212.312.812.810.09.59.310.010.4
Percentage of Revenues10.610.89.511.212.811.212.312.812.810.09.59.310.010.4
Percentage of Revenues hii:Governmentandenergyservices hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Oilandgasservices, hii:TechnicalSolutions


Revenueshii:
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
Value0.014506160647363564957514239
Percentage of Revenues0.00.61.82.63.02.83.02.82.62.42.62.42.12.1
Percentage of Revenues0.00.61.82.63.02.83.02.82.62.42.62.42.12.1
Percentage of Revenues hii:Oilandgasservices hii:TechnicalSolutions0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Otherprograms, hii:Ingalls


Revenueshii:
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-4.05.04.02.0-1.03.03.04.02.01.03.02.00.01.0
Percentage of Revenues-0.20.20.10.1-0.00.10.10.20.10.00.10.10.00.1
Percentage of Revenues-0.20.20.10.1-0.00.10.10.20.10.00.10.10.00.1
Percentage of Revenues hii:Otherprograms hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

hii:Otherprograms, hii:NewportNewsShipbuilding


Revenueshii:
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
Value163192231189180188204167158184199163143136
Percentage of Revenues7.38.48.48.28.98.38.57.57.28.89.07.87.17.3
Percentage of Revenues7.38.48.48.28.98.38.57.57.28.89.07.87.17.3
Percentage of Revenues hii:Otherprograms hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Submarines, hii:NewportNewsShipbuilding


Revenueshii:
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
Value472457550436286455474390363368362369386359
Percentage of Revenues21.220.119.918.814.120.119.717.616.617.716.517.719.119.2
Percentage of Revenues21.220.119.918.814.120.119.717.616.617.716.517.719.119.2
Percentage of Revenues hii:Submarines hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Surfacecombatantsandcoastguardcutters, hii:Ingalls


Revenueshii:
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
Value325287358335295279334294295286319336302296
Percentage of Revenues14.612.613.014.514.612.313.813.213.513.814.516.115.015.8
Percentage of Revenues14.612.613.014.514.612.313.813.213.513.814.516.115.015.8
Percentage of Revenues hii:Surfacecombatantsandcoastguardcutters hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:MajorCustomers

hii:Commercial


Revenuesus-gaap:
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
Value7.021496663687378716682596956
Percentage of Revenues0.30.91.82.93.13.03.03.53.23.23.72.83.43.0
Percentage of Revenues0.30.91.82.93.13.03.03.53.23.23.72.83.43.0
Percentage of Revenues hii:Commercial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:StateandLocalGovernmentagency


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302018-12-312018-09-302018-06-30
Value0.00.01.01.00.01.0
Percentage of Revenues0.00.00.00.00.00.0
Percentage of Revenues0.00.00.00.00.00.0
Percentage of Revenues hii:StateandLocalGovernmentagency0.00.0100.0100.00.0100.0

hii:U.S.FederalGovernment


Revenuesus-gaap:
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
Value22242257270822481963219523372141211720142116202419501818
Percentage of Revenues99.799.198.297.196.897.096.996.596.896.896.297.296.597.0
Percentage of Revenues99.799.198.297.196.897.096.996.596.896.896.297.296.597.0
Percentage of Revenues hii:U.S.FederalGovernment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments

hii:Commercial, hii:NewportNewsShipbuilding


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value0.00.01.0-35.0111114
Percentage of Revenues0.00.00.0-1.50.50.50.7
Percentage of Revenues0.00.00.0-1.50.50.50.7
Percentage of Revenues hii:Commercial hii:NewportNewsShipbuilding0.00.0100.0100.0100.0100.0100.0

hii:Commercial, hii:TechnicalSolutions


Revenuesus-gaap:
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
Value7.021496662687278716681596956
Percentage of Revenues0.30.91.82.93.13.03.03.53.23.23.72.83.43.0
Percentage of Revenues0.30.91.82.93.13.03.03.53.23.23.72.83.43.0
Percentage of Revenues hii:Commercial hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Intersegment, hii:Ingalls


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value5.03.02.00.01.01.01.01.01.00.02.0
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.00.1
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.00.1
Percentage of Revenues hii:Intersegment hii:Ingalls100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0

hii:Intersegment, hii:NewportNewsShipbuilding


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value4.02.05.03.02.02.03.02.02.02.02.03.0
Percentage of Revenues0.20.10.20.10.10.10.10.10.10.10.10.1
Percentage of Revenues0.20.10.20.10.10.10.10.10.10.10.10.1
Percentage of Revenues hii:Intersegment hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Intersegment, hii:TechnicalSolutions


Revenuesus-gaap:
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
Value3032493634214536342643313226
Percentage of Revenues1.31.41.81.61.70.91.91.61.61.22.01.51.61.4
Percentage of Revenues1.31.41.81.61.70.91.91.61.61.22.01.51.61.4
Percentage of Revenues hii:Intersegment hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Intersegment, us-gaap:IntersegmentElimination


Revenuesus-gaap:
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-39.0-37.0-56.0-39.0-37.0-24.0-49.0-39.0-37.0-26.0-45.0-35.0-35.0-26.0
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4
Percentage of Revenues hii:Intersegment us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:StateandLocalGovernmentagency, hii:TechnicalSolutions


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302018-12-312018-09-302018-06-30
Value0.00.01.01.00.01.0
Percentage of Revenues0.00.00.00.00.00.0
Percentage of Revenues0.00.00.00.00.00.0
Percentage of Revenues hii:StateandLocalGovernmentagency hii:TechnicalSolutions0.00.0100.0100.00.0100.0

hii:U.S.FederalGovernment, hii:Ingalls


Revenuesus-gaap:
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
Value665646750675621628701646621584699692629585
Percentage of Revenues29.828.427.229.230.627.829.129.128.428.131.833.231.131.2
Percentage of Revenues29.828.427.229.230.627.829.129.128.428.131.833.231.131.2
Percentage of Revenues hii:U.S.FederalGovernment hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:U.S.FederalGovernment, hii:NewportNewsShipbuilding


Revenuesus-gaap:
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
Value13591405174513551119133913861262126512651275117711801082
Percentage of Revenues60.961.763.358.655.259.257.556.957.860.858.056.558.457.7
Percentage of Revenues60.961.763.358.655.259.257.556.957.860.858.056.558.457.7
Percentage of Revenues hii:U.S.FederalGovernment hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:U.S.FederalGovernment, hii:TechnicalSolutions


Revenuesus-gaap:
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
Value200206213218223228250233231165142155141151
Percentage of Revenues9.09.07.79.411.010.110.410.510.67.96.57.47.08.1
Percentage of Revenues9.09.07.79.411.010.110.410.510.67.96.57.47.08.1
Percentage of Revenues hii:U.S.FederalGovernment hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ProductOrService

us-gaap:Product


Revenuesus-gaap:
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
Value1763172121071699142016241710154515201490160715471499137014851391
Percentage of Revenues79.075.576.473.470.171.870.969.669.571.673.174.374.273.174.474.7
Percentage of Revenues79.075.576.473.470.171.870.969.669.571.673.174.374.273.174.474.7
Percentage of Revenues us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service


Revenuesus-gaap:
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
Value468557650615607639702674668590592536521504511472
Percentage of Revenues21.024.523.626.629.928.229.130.430.528.426.925.725.826.925.625.3
Percentage of Revenues21.024.523.626.629.928.229.130.430.528.426.925.725.826.925.625.3
Percentage of Revenues us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:Product, hii:Ingalls


Revenuesus-gaap:
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
Value624604697623564578641584556538643636577534
Percentage of Revenues28.026.525.326.927.825.526.626.325.425.929.230.528.628.5
Percentage of Revenues28.026.525.326.927.825.526.626.325.425.929.230.528.628.5
Percentage of Revenues us-gaap:Product hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product, hii:NewportNewsShipbuilding


Revenuesus-gaap:
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
Value111111011386105482610461063952951939943891903822
Percentage of Revenues49.848.350.345.540.746.244.142.943.545.142.942.844.743.9
Percentage of Revenues49.848.350.345.540.746.244.142.943.545.142.942.844.743.9
Percentage of Revenues us-gaap:Product hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Product, hii:TechnicalSolutions


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28162422306.09.0131321201914
Percentage of Revenues1.30.70.91.01.50.20.40.60.61.01.00.90.7
Percentage of Revenues1.30.70.91.01.50.20.40.60.61.01.00.90.7
Percentage of Revenues us-gaap:Product hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service, hii:Ingalls


Revenuesus-gaap:
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
Value4142535257506062654656565251
Percentage of Revenues1.81.81.92.22.82.22.52.83.02.22.52.72.62.7
Percentage of Revenues1.81.81.92.22.82.22.52.83.02.22.52.72.62.7
Percentage of Revenues us-gaap:Service hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service, hii:NewportNewsShipbuilding


Revenuesus-gaap:
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
Value248304359301294293324310314326333286277260
Percentage of Revenues11.113.313.013.014.512.913.414.014.415.715.113.713.713.9
Percentage of Revenues11.113.313.013.014.512.913.414.014.415.715.113.713.713.9
Percentage of Revenues us-gaap:Service hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service, hii:TechnicalSolutions


Revenuesus-gaap:
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
Value179211238262256296318302289218203194192193
Percentage of Revenues8.09.38.611.312.613.113.213.613.210.59.29.39.510.3
Percentage of Revenues8.09.38.611.312.613.113.213.613.210.59.29.39.510.3
Percentage of Revenues us-gaap:Service hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

hii:Ingalls


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value670649752675622629702647622584699694629585638593639550641577585586580593546469608559572547815639672631722670756692676740708
Percentage of Revenues30.028.527.329.230.727.829.129.228.428.131.833.331.131.232.031.834.431.933.434.334.433.230.432.931.329.931.632.633.334.342.139.039.940.439.642.043.944.139.046.545.3
Percentage of Revenues30.028.527.329.230.727.829.129.228.428.131.833.331.131.232.031.834.431.933.434.334.433.230.432.931.329.931.632.633.334.342.139.039.940.439.642.043.944.139.046.545.3
Percentage of Revenues hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:NewportNewsShipbuilding


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value136314071750135811221341139012641267126512781179118310821139105310019717741072109011531296117711661061126310971129104711401018103195011229449798951078876872
Percentage of Revenues61.161.863.558.755.459.357.657.057.960.858.156.658.657.757.156.553.956.340.363.764.165.468.065.466.867.665.563.965.765.758.862.261.360.861.559.156.957.162.155.055.8
Percentage of Revenues61.161.863.558.755.459.357.657.057.960.858.156.658.657.757.156.553.956.340.363.764.165.468.065.466.867.665.563.965.765.758.862.261.360.861.559.156.957.162.155.055.8
Percentage of Revenues hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:TechnicalSolutions


Revenuesus-gaap:
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
Value237259311320320317369347336257267245243233242241244225186154143208
Percentage of Revenues10.611.411.313.815.814.015.315.615.412.412.111.812.012.412.112.913.113.19.79.28.411.8
Percentage of Revenues10.611.411.313.815.814.015.315.615.412.412.111.812.012.412.112.913.113.19.79.28.411.8
Percentage of Revenues hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-39.0-37.0-56.0-39.0-37.0-24.0-49.0-39.0-37.0-26.0-45.0-35.0-35.0-26.0-23.0-24.0-26.0-22.0-100.01.0-2.0-24.00.00.0-2.00.00.0-2.0-17.0-20.0-20.0-19.0-21.0-18.0-14.0-19.0-19.0-23.0-17.0
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4-1.2-1.3-1.4-1.3-5.20.1-0.1-1.40.00.0-0.10.00.0-0.1-0.9-1.2-1.2-1.2-1.2-1.1-0.8-1.2-1.1-1.4-1.1
Percentage of Revenues-1.7-1.6-2.0-1.7-1.8-1.1-2.0-1.8-1.7-1.2-2.0-1.7-1.7-1.4-1.2-1.3-1.4-1.3-5.20.1-0.1-1.40.00.0-0.10.00.0-0.1-0.9-1.2-1.2-1.2-1.2-1.1-0.8-1.2-1.1-1.4-1.1
Percentage of Revenues us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value813282148157844582337615703171847230700063836199637563766374617261906234635260085859589660246042631263196269612560806107622562796047625163925863581258246001571559375203
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

hii:Ingalls


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value166516661612167917481704161817121673159514481607147414781385129013641354136213271289130213241422138514291452150215571700175317061754
Percentage of Assets20.520.319.819.921.222.423.023.823.122.822.725.923.123.221.720.922.021.721.422.122.022.122.023.521.922.623.224.525.627.828.226.729.2
Percentage of Assets20.520.319.819.921.222.423.023.823.122.822.725.923.123.221.720.922.021.721.422.122.022.122.023.521.922.623.224.525.627.828.226.729.2
Percentage of Assets hii:Ingalls100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:NewportNewsShipbuilding


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value420143024124417840604038384939454029390735723571357134783350333732383230316932263235330632863346337033283155318332363269302129822843
Percentage of Assets51.752.450.649.549.353.054.754.955.755.856.057.656.054.552.654.152.351.849.953.755.256.154.555.453.452.750.352.053.253.548.546.747.4
Percentage of Assets51.752.450.649.549.353.054.754.955.755.856.057.656.054.552.654.152.351.849.953.755.256.154.555.453.452.750.352.053.253.548.546.747.4
Percentage of Assets hii:NewportNewsShipbuilding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:TechnicalSolutions


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value1396134913791384140814721059113411201084734673671642642650656676692303416
Percentage of Assets17.216.416.916.417.119.315.115.815.515.511.510.910.510.110.110.510.610.810.95.06.6
Percentage of Assets17.216.416.916.417.119.315.115.815.515.511.510.910.510.110.110.510.610.810.95.06.6
Percentage of Assets hii:TechnicalSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Corporate


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value870897104212041017401505393408414629348659778997895932974112913641251121313361143142113611452116610221138145117041472
Percentage of Assets10.710.912.814.312.45.37.25.55.65.99.95.610.312.215.614.515.115.617.822.721.420.622.218.922.521.523.219.016.818.623.326.724.5
Percentage of Assets10.710.912.814.312.45.37.25.55.65.99.95.610.312.215.614.515.115.617.822.721.420.622.218.922.521.523.219.016.818.623.326.724.5
Percentage of Assets us-gaap:Corporate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value606562356256656565555972544354795602543748674374467646584616446045404596469943564247437545344552482749394904446345114546470453445174554457254825481849065129456045263785
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.675.976.777.779.678.477.476.377.577.776.270.673.373.172.472.373.373.774.072.572.574.275.375.376.578.278.272.974.274.475.685.185.688.789.682.382.984.285.579.876.272.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value813282148157844582337615703171847230700063836199637563766374617261906234635260085859589660246042631263196269612560806107622562796047625163925863581258246001571559375203
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value1901158815161758165314901365152193587370766710389949188721155141113621418148715751437961
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.322.623.827.626.024.721.824.414.914.411.310.417.717.115.814.520.223.80.027.30.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value-1547.0-1409.0-1288.0-900.0-951.0-845.0-862.0-521.0-1078.0-1096.0-1224.0-1226.0-804.0-821.0-834.0-849.0-483.0-491.0-498.0-515.0-498.0-505.0-531.0-617.0
Percentage of StockholdersEquity-81.4-88.7-85.0-51.2-57.5-56.7-63.2-34.3-115.3-125.5-173.1-183.8-77.5-82.6-90.8-97.4-41.8-34.8-36.6-36.3-33.5-32.1-37.0-64.2
Percentage of Assets-19.0-20.0-20.2-14.1-15.0-14.0-13.8-8.4-17.2-18.1-19.6-19.2-13.7-14.1-14.3-14.1-8.5-8.30.0-9.90.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value19721961195419421964197819591925191419041892189418871873186018621848186418620.00.0
Percentage of StockholdersEquity103.7123.5128.9110.5118.8132.8143.5126.6204.7218.1267.6284.0181.8188.4202.6213.5160.0132.1136.70.00.0
Percentage of Assets24.227.930.630.530.932.831.230.930.531.530.329.632.232.231.931.032.331.40.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-03-312010-12-312009-12-31
Value1.01.01.01.01.01.01.01.01.01.01.00.00.00.00.00.0
Percentage of StockholdersEquity0.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value353330092609168713238485252361559139-45.0-58.0-108.0-141.0-210.038-2.00.00.0
Percentage of StockholdersEquity185.8189.5172.196.080.056.938.515.516.610.45.5-4.3-5.8-11.8-16.2-18.22.7-0.10.00.0
Percentage of Assets43.342.840.926.520.814.18.43.82.51.50.6-0.8-1.0-1.9-2.3-3.70.60.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-2058.0-1974.0-1760.0-972.0-684.0-492.0-258.0-120.0-57.0-27.0-1.0-1.0
Percentage of StockholdersEquity-108.3-124.3-116.1-55.3-41.4-33.0-18.9-7.9-6.1-3.1-0.1-0.1
Percentage of Assets-25.2-28.1-27.6-15.2-10.8-8.2-4.1-1.9-0.9-0.4-0.0-0.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value231724432444288127392137178520252123192217451859215222102195193920332063214223442197220322842419269426282546238023272544267625312269239124842226216721562268208219941313
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.529.730.034.133.328.125.428.229.427.527.330.033.834.734.431.432.833.133.739.037.537.437.940.042.741.640.638.938.341.743.040.337.538.238.938.037.337.037.836.433.625.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value348407512744631287532295124068398528701499553608720957852793894671960904990769592742104389562365210577666695519155363812250.00.00.0
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of Assets4.35.06.38.87.70.41.10.40.40.73.81.16.28.311.08.18.99.811.315.914.513.414.811.115.214.315.812.69.712.116.814.310.310.416.513.111.59.515.29.46.40.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
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
Value44340739749249441831848956437525247236434311881200120111781164104610221086107412781244121910381144121612991123105511011199905883878954711781898728
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.04.95.86.05.54.56.87.85.43.97.65.75.418.619.419.418.918.317.417.418.417.821.219.719.316.618.720.021.318.016.818.219.214.215.115.116.411.813.715.114.0

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
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
Value646645424340241471451191221001388712357754748734341313639375028462529234521213141323034408.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.60.50.50.50.32.02.01.71.91.62.21.41.90.91.20.80.81.20.70.70.50.60.60.60.80.50.80.40.50.40.70.30.30.50.70.50.50.60.70.2

Machinery And Equipment Gross

us-gaap:MachineryAndEquipmentGross

us-gaap:MachineryAndEquipmentGross


Machinery
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value20171909177115591410131512401235133912581162
Percentage of MachineryAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.727.227.724.522.221.819.819.820.921.022.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value50024793434639853613331631433301334731933007
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets61.368.268.162.556.955.050.153.052.453.257.8

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value207520552024200919751939196119351896186218291796-1775.0-1806.017701730169916611627159215551519148914531416138813511525149214561404131311601010
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.525.024.823.824.025.527.926.926.226.628.729.0-27.8-28.327.828.027.426.625.626.526.525.824.724.022.422.021.624.924.523.822.620.519.319.4

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value131315151511121212118.010.09.09.010.010.09.0117.05.06.05.07.06.06.07.08.08.06.06.04.05.05.06.04.05.05.05.05.05.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value300429882978290728792848283227002626256925172332225822192215209320341986198618411813180918271750175717681792185218501856189719641990200420341988199220052033197919851997
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.936.436.534.435.037.440.337.636.336.739.437.635.434.834.833.932.931.931.330.630.930.730.329.027.828.028.630.230.430.430.531.332.932.131.833.934.334.433.934.633.438.4

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
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
Value1604160416171577157616481373140214031402126312171217121712171217121812341234956956956956973973103210261086108992288188188188188184484484484483411341134
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.719.519.818.719.121.619.519.519.420.019.819.619.119.119.119.719.719.819.415.916.316.215.916.115.416.316.417.717.915.114.214.014.614.113.814.414.514.514.114.619.121.8

us-gaap:Goodwill us-gaap:StatementBusinessSegments

hii:Ingalls


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value175175175175175175175175175175175175175175175175175175175175175175175198198198488
Percentage of Goodwill10.910.910.811.111.110.612.712.512.512.513.914.414.414.414.218.318.018.017.017.116.116.119.022.522.523.543.0
Percentage of Assets2.22.12.12.12.12.32.52.42.42.52.72.72.82.82.82.92.92.82.82.82.92.92.93.23.13.39.4
Percentage of Assets hii:Ingalls10.510.510.910.410.010.310.810.210.511.012.112.613.612.812.813.212.312.612.212.111.711.210.311.311.611.30.0

hii:NewportNewsShipbuilding


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-31
Value721721721721721721721721721721721721721721721752753753753748748748747683683683683
Percentage of Goodwill45.045.044.645.745.743.852.551.451.451.457.159.259.259.258.478.777.477.473.072.968.968.781.077.577.580.960.2
Percentage of Assets8.98.88.88.58.89.510.310.010.010.311.311.311.711.611.412.512.511.911.911.912.212.312.211.010.711.413.1
Percentage of Assets hii:NewportNewsShipbuilding17.216.817.517.317.817.918.718.317.918.520.221.521.622.322.822.922.522.322.623.723.523.122.922.622.924.00.0

hii:TechnicalSolutions


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-31
Value70870872168168075247750650750636732132132233860130
Percentage of Goodwill44.144.144.643.243.145.634.736.136.136.129.126.426.426.427.46.312.7
Percentage of Assets8.78.68.88.18.39.96.87.07.07.25.75.05.25.25.31.02.1
Percentage of Assets hii:TechnicalSolutions50.752.552.349.248.351.145.044.645.346.750.050.049.449.148.819.831.2

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value499512512527542481492506518530492480490499508518528537548479484490495528534540547551557528528532537542548552557562567572587
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.16.26.36.26.66.37.07.07.27.67.77.77.77.88.08.48.58.68.68.08.38.38.28.78.58.58.79.09.28.68.58.58.98.78.69.49.69.69.410.011.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value13310816311431433631433633534149677187466432526542281314360
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.52.61.84.95.65.25.35.35.40.81.11.21.47.47.18.48.54.85.46.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value208195192187174185201208216220
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.42.42.22.12.42.92.93.03.1

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value273524142121196422241913193116521874164916534849555141
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.534.333.230.835.031.830.826.529.328.128.40.80.81.00.90.8

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
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
Value349397460429437536497616616618562407378344375318325333316293252252317296269307269268297263337287287247377292314293380287255274
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.85.65.15.37.07.18.68.58.88.86.65.95.45.95.25.35.35.04.94.34.35.34.94.34.94.34.44.94.35.44.64.74.05.95.05.45.06.35.04.35.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
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
Value660700585604573387373344338360331267210190146
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.18.57.27.27.05.15.34.84.75.15.24.33.33.02.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value212322902226223321142080189019501902196018291631150914631391127512471273134312281141115512741294158913321312123412671240139214021220117713841239121712521372120711842226
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.127.927.326.425.727.326.927.126.328.028.726.323.722.921.820.720.120.421.120.419.519.621.121.425.221.120.920.120.820.322.422.320.218.821.721.120.921.522.921.119.942.8

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value373529343536
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.40.40.50.5

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value447531462431350353323332307362332317277294236240219279256255222274247272264290249222244255262260209191205206229238249242265
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.56.55.75.14.34.64.64.64.25.25.25.14.34.63.73.93.54.54.04.23.84.64.14.54.24.64.03.64.04.24.24.13.53.13.23.53.94.14.14.25.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value16891688168622782276166712861549169814961283128212811280127912821281128012781277127612751273130516791700170017431765177917791808181718171830183718441859
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.820.620.727.027.621.918.321.623.521.420.120.720.120.120.120.820.720.520.121.321.821.621.121.626.626.927.128.529.029.128.628.830.029.128.631.331.731.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

hii:TermLoan, us-gaap:SubsequentEvent


Long
Period End2021-06-30
Value650
Percentage of LongTermDebt38.5
Percentage of Assets8.0
Percentage of Assets hii:TermLoan us-gaap:SubsequentEvent0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value16891688168622782276166712861549169814961283128212811280127912821281128012781277127612751273130513051592159216501679170017001743176517791779179418081822183018371844105
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.820.620.727.027.621.918.321.623.521.420.120.720.120.120.120.820.720.520.121.321.821.621.121.620.725.225.426.927.627.827.327.829.228.527.830.631.131.330.532.131.12.0

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value401380348414431
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets4.95.45.56.56.8
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value9609757649221116
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent239.4256.6219.5222.7258.9
Percentage of Assets11.813.912.014.517.6
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


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
Value318317315329296291291259255225189141130102101999589909988100103103102104105991101061045264615953495149515456
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.93.93.93.93.63.84.13.63.53.23.02.32.01.61.61.61.51.41.41.61.51.71.71.71.61.61.71.61.81.71.70.81.11.00.90.90.80.90.80.90.91.1

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value170159157153147153164172179184
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.91.91.81.82.02.32.42.52.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value384441393842424036
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.50.50.60.60.60.6

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value323430313036373430
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.50.50.50.5

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value282925252429292720
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.40.40.40.3

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value252522232222222013
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10512811912111412712511956
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.51.41.61.61.81.71.70.9

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value221215204216215208
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.52.52.83.12.9

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value276272261273273267278286196
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.23.23.63.93.73.84.13.1

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value55-57.0-57.0-57.0-58.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0
Percentage of Assets0.7-0.7-0.7-0.7-0.8

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value1901158815161758165314901365152193587370766710389949188721155141113621418148715751437961
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.322.623.827.626.024.721.824.414.914.411.310.417.717.115.814.520.223.80.027.30.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value-1547.0-1409.0-1288.0-900.0-951.0-845.0-862.0-521.0-1078.0-1096.0-1224.0-1226.0-804.0-821.0-834.0-849.0-483.0-491.0-498.0-515.0-498.0-505.0-531.0-617.0
Percentage of StockholdersEquity-81.4-88.7-85.0-51.2-57.5-56.7-63.2-34.3-115.3-125.5-173.1-183.8-77.5-82.6-90.8-97.4-41.8-34.8-36.6-36.3-33.5-32.1-37.0-64.2
Percentage of Assets-19.0-20.0-20.2-14.1-15.0-14.0-13.8-8.4-17.2-18.1-19.6-19.2-13.7-14.1-14.3-14.1-8.5-8.30.0-9.90.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value19721961195419421964197819591925191419041892189418871873186018621848186418620.00.0
Percentage of StockholdersEquity103.7123.5128.9110.5118.8132.8143.5126.6204.7218.1267.6284.0181.8188.4202.6213.5160.0132.1136.70.00.0
Percentage of Assets24.227.930.630.530.932.831.230.930.531.530.329.632.232.231.931.032.331.40.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-03-312010-12-312009-12-31
Value1.01.01.01.01.01.01.01.01.01.01.00.00.00.00.00.0
Percentage of StockholdersEquity0.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value353330092609168713238485252361559139-45.0-58.0-108.0-141.0-210.038-2.00.00.0
Percentage of StockholdersEquity185.8189.5172.196.080.056.938.515.516.610.45.5-4.3-5.8-11.8-16.2-18.22.7-0.10.00.0
Percentage of Assets43.342.840.926.520.814.18.43.82.51.50.6-0.8-1.0-1.9-2.3-3.70.60.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-2058.0-1974.0-1760.0-972.0-684.0-492.0-258.0-120.0-57.0-27.0-1.0-1.0
Percentage of StockholdersEquity-108.3-124.3-116.1-55.3-41.4-33.0-18.9-7.9-6.1-3.1-0.1-0.1
Percentage of Assets-25.2-28.1-27.6-15.2-10.8-8.2-4.1-1.9-0.9-0.4-0.0-0.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value2067197919011880167816431588170516281563151618251699171817581712165016381653165216121521149014901485138013651662156915611521935873707667103899491887211551418
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.424.123.322.320.421.622.623.722.522.323.829.426.726.927.627.726.726.326.027.527.525.824.724.723.521.821.827.125.825.624.414.914.411.310.417.717.115.814.520.227.3

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-1501.0-1523.0-1547.0-1357.0-1376.0-1394.0-1409.0-1232.0-1251.0-1269.0-1288.0-1070.0-1085.0-1098.0-900.0-949.0-919.0-935.0-951.0-808.0-821.0-833.0-845.0-826.0-836.0-849.0-862.0-506.0-509.0-515.0-521.0-1078.0-1096.0-1224.0-1226.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-72.6-77.0-81.4-72.2-82.0-84.8-88.7-72.3-76.8-81.2-85.0-58.6-63.9-63.9-51.2-55.4-55.7-57.1-57.5-48.9-50.9-54.8-56.7-55.4-56.3-61.5-63.2-30.4-32.4-33.0-34.3-115.3-125.5-173.1-183.8
Percentage of Assets-18.5-18.5-19.0-16.1-16.7-18.3-20.0-17.1-17.3-18.1-20.2-17.3-17.0-17.2-14.1-15.4-14.8-15.0-15.0-13.4-14.0-14.1-14.0-13.7-13.2-13.4-13.8-8.3-8.4-8.4-8.4-17.2-18.1-19.6-19.2
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value19771974197219641961195519611950194319361954194419321924194219351928191419641949193919331978194819421922195919071896190419251914190418921894
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest95.699.7103.7104.5116.9119.0123.5114.4119.3123.9128.9106.5113.7112.0110.5113.0116.8116.8118.8118.0120.3127.1132.8130.7130.8139.3143.5114.7120.8122.0126.6204.7218.1267.6284.0
Percentage of Assets24.324.024.223.323.825.727.927.126.927.730.631.430.330.230.531.431.130.730.932.433.132.832.832.230.830.431.231.131.231.230.930.531.530.329.6
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value37183635353333303150313930092902278326912609243422362029168716561534141413231154106996084882172959352549240631623615591390.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest179.9183.7185.8177.1187.7191.1189.5170.2170.9172.2172.1133.4131.6118.196.096.793.086.380.069.966.363.156.955.149.143.038.529.625.920.215.516.610.45.50.0
Percentage of Assets45.744.343.339.438.341.242.840.438.538.440.939.335.131.826.526.824.822.720.819.218.216.314.113.611.59.48.48.06.75.23.82.51.50.60.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-2128.0-2108.0-2058.0-2058.0-2058.0-2058.0-1974.0-1916.0-1848.0-1796.0-1760.0-1484.0-1385.0-1138.0-972.0-931.0-894.0-756.0-684.0-644.0-576.0-540.0-492.0-454.0-351.0-287.0-258.0-232.0-225.0-145.0-120.0-57.0-27.0-1.0-1.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-103.0-106.5-108.3-109.5-122.6-125.3-124.3-112.4-113.5-114.9-116.1-81.3-81.5-66.2-55.3-54.4-54.2-46.2-41.4-39.0-35.7-35.5-33.0-30.5-23.6-20.8-18.9-14.0-14.3-9.3-7.9-6.1-3.1-0.1-0.1
Percentage of Assets-26.2-25.7-25.2-24.4-25.0-27.0-28.1-26.7-25.6-25.7-27.6-23.9-21.7-17.8-15.2-15.1-14.4-12.1-10.8-10.7-9.8-9.2-8.2-7.5-5.6-4.5-4.1-3.8-3.7-2.4-1.9-0.9-0.4-0.0-0.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value1977197419721964196119551961195019431936195419441932192419421935192819141964194919391933197819481942192219591907189619041925191419041892189418871873186018620.0
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets24.324.024.223.323.825.727.927.126.927.730.631.430.330.230.531.431.130.730.932.433.132.832.832.230.830.431.231.131.231.230.930.531.530.329.632.232.231.931.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value371836353533333031503139300929022783269126092434223620291687165615341414132311541069960848821729593525492406316236-45.0-58.0-108.0-141.00.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets45.744.343.339.438.341.242.840.438.538.440.939.335.131.826.526.824.822.720.819.218.216.314.113.611.59.48.48.06.75.23.8-0.8-1.0-1.9-2.30.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-312011-09-302011-06-302010-12-31
Value-1501000000.0-1523000000.0-1547000000.0-1357000000.0-1376000000.0-1394000000.0-1409000000.0-1232000000.0-1251000000.0-1269000000.0-1288000000.0-1070000000.0-1085000000.0-1098000000.0-900000000.0-949000000.0-919000000.0-935000000.0-951000000.0-808000000.0-821000000.0-833000000.0-845000000.0-826000000.0-836000000.0-849000000.0-862000000.0-506000000.0-509000000.0-515000000.0-521000000.0-1078000000.0-1096000000.0-1224000000.0-1226000000.0-834000000.0-849000000.0-483000000.0-491000000.0-515000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-18.5-18.5-19.0-16.1-16.7-18.3-20.0-17.1-17.3-18.1-20.2-17.3-17.0-17.2-14.1-15.4-14.8-15.0-15.0-13.4-14.0-14.1-14.0-13.7-13.2-13.4-13.8-8.3-8.4-8.4-8.4-17.2-18.1-19.6-19.2-14.3-14.1-8.5-8.3-9.9

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

hii:AOCIOther


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-1000000.0-2000000.0-5000000.06000000.0-3000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax0.10.10.4-0.70.3
Percentage of Assets-0.0-0.0-0.10.1-0.0
Percentage of Assets hii:AOCIOther0.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value-1502000000.0-1524000000.0-1546000000.0-1355000000.0-1373000000.0-1390000000.0-1407000000.0-1228000000.0-1246000000.0-1264000000.0-1283000000.0-1065000000.0-1080000000.0-1095000000.0-906000000.0-953000000.0-921000000.0-935000000.0-948000000.0-807000000.0-819000000.0-831000000.0-843000000.0-824000000.0-838000000.0-850000000.0-864000000.0-508000000.0-513000000.0-518000000.0-523000000.0-1080000000.0-1097000000.0-1225000000.0-1226000000.0-862000000.0-532000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.1100.199.999.999.899.799.999.799.699.699.699.599.599.7100.7100.4100.2100.099.799.999.899.899.899.8100.2100.1100.2100.4100.8100.6100.4100.2100.1100.1100.0101.5103.3
Percentage of Assets-18.5-18.6-19.0-16.0-16.7-18.3-20.0-17.1-17.2-18.1-20.1-17.2-16.9-17.2-14.2-15.4-14.9-15.0-14.9-13.4-14.0-14.1-14.0-13.6-13.3-13.5-13.8-8.3-8.4-8.5-8.4-17.2-18.1-19.6-19.2-14.4-10.2
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1000000.01000000.0-1000000.0-2000000.0-3000000.0-4000000.0-2000000.0-4000000.0-5000000.0-5000000.0-5000000.0-5000000.0-5000000.0-3000000.06000000.04000000.02000000.0-3000000.0-1000000.0-2000000.0-2000000.0-2000000.0-2000000.02000000.01000000.02000000.02000000.04000000.03000000.02000000.02000000.01000000.01000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-0.1-0.10.10.10.20.30.10.30.40.40.40.50.50.3-0.7-0.4-0.20.30.10.20.20.20.2-0.2-0.1-0.2-0.4-0.8-0.6-0.4-0.2-0.1-0.1
Percentage of Assets0.00.0-0.0-0.0-0.0-0.1-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.00.10.10.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.10.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value2128210820582058205820581974191618481796176014841385113897293189475668464457654049245435128725823222514512057271.01.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.225.725.224.425.027.028.126.725.625.727.623.921.717.815.215.114.412.110.810.79.89.28.27.55.64.54.13.83.72.41.90.90.40.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value964360222220168566363-44.011648-93.0239120434961869834525416954411254166-3.0402256272-214.029228125-362.0373137151-329.0474232186-364.0208173
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.31.921.89.69.93.023.516.4-2.00.529.5-4.511.86.421.75.210.05.718.015.19.93.121.614.19.5-0.220.914.915.8-13.415.117.21.5-23.220.58.68.8-21.027.314.611.9-21.612.010.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-88.0-46.0-173.0-67.0-75.0-444.0-157.0-109.0-92.0-269.0-209.0-102.0-95.0-70.0-133.0-83.0-75.0-58.0-512.0-60.0-44.0-37.0-102.0-37.0-8.06.0-74.0-39.0-254.0-70.0-54.028-25.0-30.0-70.0-35.0-30.0-27.0-78.0-36.0-20.0-63.0-93.0-36.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3.9-2.0-6.3-2.9-3.7-19.6-6.5-4.9-4.2-12.9-9.5-4.9-4.7-3.7-6.7-4.5-4.0-3.4-26.6-3.6-2.6-2.1-5.4-2.1-0.50.4-3.8-2.3-14.8-4.4-2.81.7-1.5-1.9-3.8-2.2-1.7-1.7-4.5-2.3-1.3-3.7-5.4-2.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-67.0-102.0-661.0-42.0477329-366.0-251.011469-267.0-135.0-274.0-223.0-99.0-67.0-166.0-152.0-70.0-89.0-66.0-118.0-86.0-506.0-102.0-89.0-107.0-40.0-168.0-17.0-90.0-37.0-29.0-13.0-12.0-5.0-3.0-8.0-17.0-41.0-10.0652-115.0-137.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3.0-4.5-24.0-1.823.514.5-15.2-11.35.23.3-12.1-6.5-13.6-11.9-5.0-3.6-8.9-8.8-3.6-5.3-3.9-6.7-4.5-28.1-5.8-5.7-5.6-2.3-9.8-1.1-4.6-2.3-1.7-0.8-0.7-0.3-0.2-0.5-1.0-2.6-0.638.7-6.6-8.2

Cash And Cash Equivalents Period Increase Decrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-59.0-105.0-232.0113603-47.0433.0-22.0-189.0172-330.0-130.0-173.0202-54.0-55.0-112.0-237.010559-101.0223-289.056-86.0221177-150.0-301.0148272-29.0-405.029197118-364.0379155156225
Percentage of CashAndCashEquivalentsPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-2.6-4.6-8.44.929.7-2.11.80.1-1.0-9.17.8-15.8-6.4-9.210.1-2.9-3.0-6.5-12.36.23.5-5.711.7-16.13.2-5.511.510.3-8.7-18.97.616.6-1.7-25.916.06.16.9-23.221.89.710.013.4

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
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
Value1.02.02.02.02.01.01.01.00.01.01.01.01.01.02.01.01.02.01.01.01.02.02.01.02.03.03.03.02.03.03.02.02.02.03.02.02.02.02.02.02.00.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


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
Value3510.0-94.0-3.07493-172.0-78.0189112-387.08.015169-12.0-13.017435024-64.012-204.03422189-106.0-72.0-124.016268-46.0-98.0294225.0-76.0243-70.0-118.03.0168-28.043
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value964360222220168566363-44.011648-93.0239120434961869834525416954411254166-3.0402256272-214.029228125-362.0373137151-329.0474232186-364.0208173
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.31.921.89.69.93.023.516.4-2.00.529.5-4.511.86.421.75.210.05.718.015.19.93.121.614.19.5-0.220.914.915.8-13.415.117.21.5-23.220.58.68.8-21.027.314.611.9-21.612.010.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value12914824922253172149154128118212229239156641491471191971071331365011115687529610090916957445013503367-248.040456342-11.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.86.59.09.62.67.66.26.95.95.79.611.011.88.33.28.07.96.910.26.47.87.72.66.28.95.52.75.65.85.64.74.23.42.82.70.82.92.13.9-15.62.62.73.62.5-0.7

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
Value12914824922253172149154128118212229239156641491471191971071331365011115687529610090916957445013503369-248.040-2.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0103.0100.0100.0-4.4
Percentage of Revenues5.86.59.09.62.67.66.26.95.95.79.611.011.88.33.28.07.96.910.26.47.87.72.66.28.95.52.75.65.85.64.74.23.42.82.70.82.92.14.0-15.62.6-0.1
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

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
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
Value3.09.07.03.06.07.0117.07.05.09.0128.07.07.07.0146.014116.05.0148.0174.012116.05.0169.010.09.0169.08.08.0209.09.04.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-88.0-46.0-173.0-67.0-75.0-444.0-157.0-109.0-92.0-269.0-209.0-102.0-95.0-70.0-133.0-83.0-75.0-58.0-512.0-60.0-44.0-37.0-102.0-37.0-8.06.0-74.0-39.0-254.0-70.0-54.028-25.0-30.0-70.0-35.0-30.0-27.0-78.0-36.0-20.0-63.0-93.0-36.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3.9-2.0-6.3-2.9-3.7-19.6-6.5-4.9-4.2-12.9-9.5-4.9-4.7-3.7-6.7-4.5-4.0-3.4-26.6-3.6-2.6-2.1-5.4-2.1-0.50.4-3.8-2.3-14.8-4.4-2.81.7-1.5-1.9-3.8-2.2-1.7-1.7-4.5-2.3-1.3-3.7-5.4-2.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value746013370797118111512411017011610275154917958140604837102372920744027245430253070353027783620639536
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-67.0-102.0-661.0-42.0477329-366.0-251.011469-267.0-135.0-274.0-223.0-99.0-67.0-166.0-152.0-70.0-89.0-66.0-118.0-86.0-506.0-102.0-89.0-107.0-40.0-168.0-17.0-90.0-37.0-29.0-13.0-12.0-5.0-3.0-8.0-17.0-41.0-10.0652-115.0-137.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3.0-4.5-24.0-1.823.514.5-15.2-11.35.23.3-12.1-6.5-13.6-11.9-5.0-3.6-8.9-8.8-3.6-5.3-3.9-6.7-4.5-28.1-5.8-5.7-5.6-2.3-9.8-1.1-4.6-2.3-1.7-0.8-0.7-0.3-0.2-0.5-1.0-2.6-0.638.7-6.6-8.2

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312020-09-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.00.00.00.00.00.01775
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.00.00.00.00.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value46464642424242353636373132323327272828222424231920191910.010.010.010.05.05.05.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends

us-gaap:Dividends


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value464642424235363631323227272822242419201910.010.010.05.05.05.0
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividendsus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value464642424235-36.03631323227272822242419201910.010.010.05.05.05.0
Percentage of Dividends100.0100.0100.0100.0100.0100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


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
Value21490.00.00.0846066528423010424216639401396842664244401026129268.09410.06628
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

hii:GulfOpportunityZoneIndustrialDevelopmentRevenueBondsDueDecember12028455Percent, us-gaap:Bonds


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4.550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.04550.0455
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations hii:GulfOpportunityZoneIndustrialDevelopmentRevenueBondsDueDecember12028455Percent us-gaap:Bonds0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

hii:MississippiEconcomicDevelopmentRevenueBondsDueMay12014781Percent, us-gaap:Bonds


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value7.810.07810.07810.07810.07810.07810.07810.07810.07810.07810.07810.07810.07810.07810.07810.0781
Percentage of DebtInstrumentInterestRateStatedPercentage171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6171.6
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations hii:MississippiEconcomicDevelopmentRevenueBondsDueMay12014781Percent us-gaap:Bonds0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

hii:SeniorNotesDueNovember1520255.000, us-gaap:SeniorNotes


Debt
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5.00.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.05
Percentage of DebtInstrumentInterestRateStatedPercentage0.0109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9109.9
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations hii:SeniorNotesDueNovember1520255.000 us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value19.914.52.31.80.1850.204-0.0210.2220.220.208-0.0310.2240.0880.20.0890.3230.3260.19-0.0260.3180.3320.2320.0020.3660.3610.3460.0010.3330.3420.3180.0150.3030.3450.323-0.0210.6490.3510.34-0.0150.350.344
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7176255564949098928866741120957
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-03-312010-12-312009-12-31
Value5250476036252.0271911196.04.01421
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value22151212111114122118
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Accruedrepurchasesofcommonstock

hii:Accruedrepurchasesofcommonstock


Accruedrepurchasesofcommonstock
Period End2021-03-312018-12-31
Value1.046
Percentage of Accruedrepurchasesofcommonstock100.0100.0

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResults hii:ContractName, us-gaap:ChangeInAccountingEstimateByType

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResults

hii:Ingallscontract, us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2021-06-302021-03-312020-06-302017-09-302017-06-302016-09-302016-06-302016-03-31
Value142525-30.0307.03822
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResults100.0100.0100.0100.0100.0100.0100.0100.0

hii:NNSBlockIVVirginiaClassSSN774, hii:COVID19Events


Change
Period End2020-12-312020-09-302020-06-30
Value0.0-32.016
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResults0.00.064.0

hii:NNSBlockIVVirginiaClassSSN774, us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2020-12-312020-09-302020-06-30
Value-14.0-14.0-111.0
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResults0.00.0-444.0

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResults us-gaap:ChangeInAccountingEstimateByType

hii:COVID19Events


Change
Period End2020-12-312020-09-302020-06-30
Value0.0-122.061
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResults0.00.0244.0

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3550464.0-111.032394419-6.01134372862566026572474695162715568466444462.0353023-9.0341435193.0
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResults250.0200.00.00.0-444.00.00.00.00.00.00.00.00.00.00.0-186.7200.00.00.0342.9194.7313.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted hii:ContractName, us-gaap:ChangeInAccountingEstimateByType

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted

hii:Ingallscontract, us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2021-06-302021-03-312020-06-302017-09-302017-06-302016-09-302016-06-302016-03-31
Value0.280.50.48-0.420.420.10.520.3
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0

hii:NNSBlockIVVirginiaClassSSN774, us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2020-12-312020-09-302020-06-30
Value-0.28-0.26-2.15
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted0.00.0-447.9

hii:ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted us-gaap:ChangeInAccountingEstimateByType

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.680.980.890.08-2.150.620.750.860.35-0.110.210.620.660.50.890.790.850.370.790.331.020.950.70.840.940.730.90.610.840.580.60.020.440.390.3-0.120.440.180.850.260.04
Percentage of ChangeInAccountingEstimateEffectOfChangeOnOperatingResultsPerShareDiluted242.9196.00.00.0-447.90.00.00.00.00.00.00.00.00.00.0-188.1202.40.00.0330.0196.2316.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

hii:Deferredgainonreceiptofproperty

hii:Deferredgainonreceiptofproperty


Deferredgainonreceiptofproperty
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
Value1.01.00.08.04.05.0232.033362814172.0
Percentage of Deferredgainonreceiptofproperty100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions us-gaap:AwardType

hii:EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions

hii:StockAwards


Employee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.00.01.02.06.00.00.05.09.00.00.07.04.00.01.023
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions100.00.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.0100.0100.0

hii:EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions us-gaap:Range, us-gaap:AwardType

srt:Maximum, hii:StockAwards


Employee
Period End2021-06-302021-03-312020-09-302020-03-312019-09-302019-06-302018-09-302018-06-302017-09-30
Value1.02.01.02.01.01.01.01.01.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromIssuanceOfInstrumentsOtherThanOptions0.00.00.0100.00.00.00.00.00.0

hii:FasCasAdjustment us-gaap:StatementBusinessSegments

hii:FasCasAdjustment

us-gaap:MaterialReconcilingItems


Fas
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
Value3740-62.0-60.0-63.0-63.0-30.0-23.0-37.0-34.0-72.0-73.0-73.0-72.0-45.0-46.0-49.0-49.0-38.0-37.0-35.0-35.0-22.0-27.0-28.0-27.0-8.0-21.0-21.0-22.07.0131823251919
Percentage of FasCasAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Grantproceedsforcapitalexpenditures

hii:Grantproceedsforcapitalexpenditures


Grantproceedsforcapitalexpenditures
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
Value1.01.00.08.04.05.0232.033362814172.0
Percentage of Grantproceedsforcapitalexpenditures100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:IncreaseDecreaseinNetContractAssets

hii:IncreaseDecreaseinNetContractAssets


Increase
Period End2021-06-302021-03-312020-12-31
Value-66.0124-66.0
Percentage of IncreaseDecreaseinNetContractAssets100.0100.0100.0

hii:NonoperatingretirementFASexpense

hii:NonoperatingretirementFASexpense


Nonoperatingretirement
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-44.0-46.0-30.0-29.0-30.0-30.0-4.0-3.0-2.0-3.0-18.0-19.0-19.0-18.04.04.04.04.0
Percentage of NonoperatingretirementFASexpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:Parentownershippercentageofsubsidiaryguarantors

hii:Parentownershippercentageofsubsidiaryguarantors


Parentownershippercentageofsubsidiaryguarantors
Period End2021-06-302021-03-312020-12-31
Value0100.00
Percentage of Parentownershippercentageofsubsidiaryguarantors0.0100.00.0

hii:Repaymentoflineofcreditborrowings

hii:Repaymentoflineofcreditborrowings


Repaymentoflineofcreditborrowings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.03805.033519121905967
Percentage of Repaymentoflineofcreditborrowings0.00.0100.0100.0100.0100.0100.0100.0

hii:Revenueperformanceobligationrecognitionpercentageyearfour

hii:Revenueperformanceobligationrecognitionpercentageyearfour


Revenueperformanceobligationrecognitionpercentageyearfour
Period End2021-06-302021-03-31
Value030.0
Percentage of Revenueperformanceobligationrecognitionpercentageyearfour0.0100.0

hii:Revenueperformanceobligationrecognitionpercentageyeartwo

hii:Revenueperformanceobligationrecognitionpercentageyeartwo


Revenueperformanceobligationrecognitionpercentageyeartwo
Period End2021-06-302021-03-31
Value030.0
Percentage of Revenueperformanceobligationrecognitionpercentageyeartwo0.0100.0

hii:SalesRevenueIntersegmentNet us-gaap:StatementBusinessSegments

hii:SalesRevenueIntersegmentNet

hii:Ingalls


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value5.03.02.00.01.01.01.01.01.00.02.0
Percentage of SalesRevenueIntersegmentNet100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0

hii:NewportNewsShipbuilding


Sales
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value4.02.05.03.02.02.03.02.02.02.02.03.0
Percentage of SalesRevenueIntersegmentNet80.066.7250.00.0200.0200.0300.0200.0200.00.0100.00.0

hii:TechnicalSolutions


Sales
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
Value3032493634214536342643313226
Percentage of SalesRevenueIntersegmentNet600.01066.72450.00.03400.02100.04500.03600.03400.00.00.01550.00.00.0

us-gaap:IntersegmentElimination


Sales
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-39.0-37.0-56.0-39.0-37.0-24.0-49.0-39.0-37.0-26.0-45.0-35.0-35.0-26.0
Percentage of SalesRevenueIntersegmentNet-780.0-1233.3-2800.00.0-3700.0-2400.0-4900.0-3900.0-3700.00.00.0-1750.00.00.0

hii:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations

hii:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations


Sharebased
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value00100000.000100000.000100000.000200000.000300000.000300000.00300000.0300000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations0.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.0100.0100.0

hii:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations us-gaap:Range

srt:Maximum


Sharebased
Period End2021-06-302021-03-312020-06-302020-03-31
Value0100000.00100000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredFromEmployeesforMinimumTaxObligations0.00.00.0100.0

hii:TreasuryStockValueAcquiredNotYetSettledforCash

hii:TreasuryStockValueAcquiredNotYetSettledforCash


Treasury
Period End2021-03-312018-09-302018-06-302018-03-312017-06-302017-03-312016-03-312015-09-30
Value1000000.0-5000000.04000000.03000000.0-1000000.04000000.06000000.01000000.0
Percentage of TreasuryStockValueAcquiredNotYetSettledforCash100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value3.02.03.06.0-6.07.07.0-18.0128.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value3.02.03.06.0-6.07.07.0-18.0128.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-31
Value0.0
Percentage of AssetImpairmentCharges0.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value-7.012-1.03.0-5.010.010.03.0-25.034480.03.04.0300.0-2.05.0139.0-2.04.0140.00.03.05.01.01.02.010.0-1.01.02.0180.0-1.03.0452.0152.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAcquiredFromAcquisition us-gaap:BusinessAcquisition

us-gaap:CashAcquiredFromAcquisition

hii:HydroidInc


Cash
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.02.0
Percentage of CashAcquiredFromAcquisition0.00.00.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-10-312014-09-302014-06-302014-03-312013-12-312013-10-312013-09-302013-06-302013-03-312012-11-302012-12-31
Value1.141.141.141.031.031.031.030.860.860.860.860.720.720.720.720.60.60.60.60.50.50.50.50.40.40.40.40.40.20.20.20.20.20.10.10.10.10.1
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:Range, us-gaap:ConcentrationRiskByBenchmark

us-gaap:ConcentrationRiskPercentage1

srt:Maximum, us-gaap:OtherCurrentLiabilities


Concentration
Period End2021-03-31
Value5.0
Percentage of ConcentrationRiskPercentage1100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value563971.09.0-18.0274181727217-2.00.01.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit

us-gaap:MaterialReconcilingItems


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-30
Value4.04.0-1.00.01.04.0170.00.02.07.00.0-3.0-2.07.01.0-1.05.0-5.02.02.03.0-1.02.0-1.0-2.01.03.0-12.02.02.09.04.02.0
Percentage of DeferredStateAndLocalIncomeTaxExpenseBenefit100.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.01.02.02.01.02.03.03.02.03.01.01.00.01.01.01.01.01.02.01.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-27.0-27.0-27.0-28.0-27.0-27.0-28.0-29.0-28.0-28.0-20.0-20.0-21.0-20.0-24.0-25.0-24.0-24.0-21.0-21.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.0-2700.0-1350.0-1400.0-2700.0-1350.0-933.3-966.7-1400.0-933.3-2000.0-2000.00.0-2000.0-2400.0-2500.0-2400.0-2400.0-1050.0-2100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-1.0-1.0-6.0-5.0-6.0-5.0-6.0-5.0-6.0-5.0-6.0-5.0-6.0-5.0-5.0-6.0-4.0-5.0-5.0-5.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4.04.03.03.03.03.05.04.04.05.06.06.06.06.06.06.04.04.04.05.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-400.0-400.0-50.0-60.0-50.0-60.0-83.3-80.0-66.7-100.0-100.0-120.0-100.0-120.0-120.0-100.0-100.0-80.0-80.0-100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax

us-gaap:DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3029-257.0242323-241.0252425-293.020212066-52.02322-231.0201920-31.0212222-582.08.08.08.0913312105.0-673.0232124-589.01211
Percentage of DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value138138121122122121102102101102107107108107929391918687
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4.03.05.04.04.04.05.05.05.05.06.05.05.05.06.06.06.06.06.06.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value6060656465646969706964636364666766676665
Percentage of DefinedBenefitPlanInterestCost1500.02000.01300.01600.01625.01600.01380.01380.01400.01380.01066.71260.01260.01280.01100.01116.71100.01116.71100.01083.3

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value5.04.0-1.0-1.00.0-1.0-2.0-1.0-2.0-1.01.01.01.01.02.02.03.03.02.02.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2.03.0191818183636373622212222424239393838
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost40.075.0-1900.0-1800.00.0-1800.0-1800.0-3600.0-1850.0-3600.02200.02100.02200.02200.02100.02100.01300.01300.01900.01900.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2.03.02.02.03.02.02.02.01.02.02.02.02.02.02.03.02.03.03.02.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4950454545453636363639394039383736353334
Percentage of DefinedBenefitPlanServiceCost2450.01666.72250.02250.01500.02250.01800.01800.03600.01800.01950.01950.02000.01950.01900.01233.31800.01166.71100.01700.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5052554445475443424138444441424141414040424138393839303943547153394343404042414241403642
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
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
Value46464642424242353636373132323327272828222424231920191910.010.010.010.05.05.05.0
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationDispositionOfBusiness

us-gaap:EffectiveIncomeTaxRateReconciliationDispositionOfBusiness


Effective
Period End2021-03-31
Value5.5
Percentage of EffectiveIncomeTaxRateReconciliationDispositionOfBusiness100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.02.03.01.01.01.03.01.01.01.02.03.02.01.0-26.03.06.026-17.04.07.0206.03.07.01.05.04.02.02.06.04.04.03.06.03.03.04.07.03.03.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense us-gaap:Range

srt:Maximum


Employee
Period End2021-06-30
Value1.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense0.0

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfBusiness


Gain
Period End2021-03-31
Value3000000.0
Percentage of GainLossOnSaleOfBusiness100.0

us-gaap:GainLossOnSaleOfBusiness us-gaap:BusinessAcquisition

hii:Oilandgasservices


Gain
Period End2021-06-302021-03-31
Value2000000.0-3000000.0
Percentage of GainLossOnSaleOfBusiness0.0-100.0

us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:GoodwillPurchaseAccountingAdjustments


Goodwill
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312017-09-302015-09-302015-06-302015-03-31
Value0-13000000.01000000.0-72000000.0-35000000.0-1000000.01000000.06000000.0-1000000.0001000000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:BusinessAcquisition

hii:HydroidInc


Goodwill
Period End2020-12-312020-09-30
Value01000000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

hii:SpatialIntegratedSystemsInc


Goodwill
Period End2021-06-302021-03-31
Value0-13000000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:StatementBusinessSegments

hii:TechnicalSolutions


Goodwill
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312017-06-30
Value0-13000000.01000000.0-72000000.0-35000000.0-1000000.01000000.06000000.0-16000000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf us-gaap:StatementBusinessSegments

us-gaap:ImpairmentOfLongLivedAssetsToBeDisposedOf

hii:TechnicalSolutions


Impairment
Period End2020-09-302019-12-31
Value5.06.0
Percentage of ImpairmentOfLongLivedAssetsToBeDisposedOf100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value128.0136.07.06.07.06.05.04.05.08.02.02.02.07.01.02.0-1.06.01.01.06.02.01.01.07.01.02.01.09.02.02.05.07.04.03.03.09.04.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


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-148.01162914312646-143.040-40.014722631225614333-18.0-56.01.088-18.0-112.0-11.083-14.039100-55.066-197.05715848-194.012024-33.0-125.01243.054-131.012696
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-112.0239-85.00.0-77.0140-229.0-41.09.0229-38.0-40.015305
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-06-302011-03-31
Value0.0-31.028-3.0-18.0-12.0-14.0-16.0-11.012-6.0-5.0-158.02.0-16.0-12.0-26.0-20.0-24.0-15.020-17.0111.033-15.012-8.09.047-14.0-14.0-35.0-15.0-12.0-17.0-14.033
Percentage of IncreaseDecreaseInDeferredIncomeTaxes0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInventoryForLongTermContractsOrPrograms

us-gaap:IncreaseDecreaseInInventoryForLongTermContractsOrPrograms


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-2.05.0-16.0-8.07.06.0-3.013-1.02.0-37.06.0-14.05.00.0-13.0-25.020-58.0-12.0-3.0-2.0-23.0-11.0-17.0-3.094-23.0-20.02.0-51.0778.017173-32.0-20.0-5.0-260.059
Percentage of IncreaseDecreaseInInventoryForLongTermContractsOrPrograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations


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-5.0-65.07.0-133.0-37.0-13.02410.0212514-412.0-36.0-20.035-171.0-13.0-14.03131-85.0-21.03332-63.0304425-60.0-13.04850-212.02850-1.0-17.0-75.033302831-46.09.0
Percentage of IncreaseDecreaseInPensionAndPostretirementObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value236.02.0563.01.031193310.045-22.055-38.064-13.012-11.0-34.0384.09.0-8.030-2.011-3.0-18.010.04.0-1.0-12.0-14.0-3.013-2.0-6.0-4.02.0381.0-17.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2020-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value100000.0100000.00100000.0100000.0100000.00300000.0500000.0400000.0100000.0400000.0300000.0300000.0100000.0300000.0300000.0600000.0100000.0700000.0500000.0500000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value361.0561.0311.0355.0301.0301.0351.0351.0350.0351.02823222317447.0458.0469.0469.0478.0479.0478.00.04.04.0
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:LossContingencyNumberOfDefendants

us-gaap:LossContingencyNumberOfDefendants


Loss
Period End2021-06-302021-03-312020-09-30
Value032.032.0
Percentage of LossContingencyNumberOfDefendants0.0100.0100.0

us-gaap:MarketableSecuritiesGainLoss

us-gaap:MarketableSecuritiesGainLoss


Marketable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.04.0148.011-16.05.02.0-3.07.0
Percentage of MarketableSecuritiesGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1313131612121211
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1214-12.0-16.080-12.0-11.0-11.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.03.0-3.0-2.0-3.0-2.0-1.0-1.0-2.00.01.00.01.00.00.0-1.00.0-1.0-1.0-2.0-2.0-2.0-2.0-2.00.02.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.03.0-3.0-2.0-3.0-2.0-1.0-1.0-2.00.01.00.01.00.00.0-1.00.0-1.0-1.0-2.0-2.0-2.0-2.0-2.00.02.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.02.01.01.0-2.0-263.01.0-312.00.0-2.046-73.03.04.0-251.01.0-51.0-7.02.0-2.0-2.01.01.09431.0108-29.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.02.01.01.0-2.01.00.00.0-2.04.03.03.04.0-2.01.02.0-7.02.0-2.0-2.01.01.02.01.0-1.02.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax0.0100.0100.0100.0100.0100.0-0.00.0100.08.7-4.1100.0100.00.8100.0-3.9100.0100.0100.0100.0100.0100.00.2100.0-0.9-6.9

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value2224191815191819151315-30.0161613121210.013133.06.06.0181282.0171315
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value2222181717181819151515-32.014131212121412145.05.05.0171281.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.091.794.794.4113.394.7100.0100.0100.0115.4100.0106.787.581.292.3100.0100.0140.092.3107.7166.783.383.394.4100.050.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302018-09-302018-06-302017-09-302017-06-302017-03-312016-09-302015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value0.02.01.01.0-2.01.00.0-2.02.02.03.01.0-4.01.0-1.0-2.01.01.01.00.01.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.08.35.35.6-13.35.30.0-15.4-6.712.518.87.7-40.07.7-7.7-66.716.716.75.60.050.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value2224191815191819151315-30.0161613121210.013133.06.06.0181282.0171315
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax


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
Value27262526262525262625191921192324232319201920222222222210.010.010.034333334
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


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
Value27262526262525262625191921192324232319201920222222222210.010.010.034333334
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value8.07.0-65.06.06.06.0-62.07.06.06.0-75.05.06.05.021-19.010.010.0-90.08.07.08.0-10.04.0117.0-226.03.03.03.035715815.0-264.06.08.09.0
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


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
Value8.07.0-66.06.06.06.0-62.07.06.06.0-75.05.06.05.019-20.09.09.0-90.08.07.08.0-12.07.010.08.0-226.03.03.03.035614824.0
Percentage of OtherComprehensiveIncomeLossTax100.0100.0101.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.090.5105.390.090.0100.0100.0100.0100.0120.0175.090.9114.3100.0100.0100.0100.099.793.3101.280.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.02.01.01.0-2.01.00.00.0-2.04.03.03.0-2.01.02.0-7.02.0-2.0-2.01.01.01.02.0-1.02.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax0.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-06-302011-03-31
Value-2.0-4.0-7.0-2.00.0-3.0-2.00.0-2.0-2.08.00.0-2.0-1.0-3.03.0-2.0-2.0-4.00.01.0-5.0-2.0-1.00.0-1.00.0-16.09.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:OtherPostretirementBenefitsPayments

us-gaap:OtherPostretirementBenefitsPayments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value10.010.08.08.09.08.08.07.09.07.07.07.09.07.07.010.08.09.06.09.09.08.08.09.08.08.09.08.08.08.012118.07.06.08.0125.05.08.0
Percentage of OtherPostretirementBenefitsPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForAdvanceToAffiliate

us-gaap:PaymentsForAdvanceToAffiliate


Payments
Period End2021-06-302021-03-31
Value10.012
Percentage of PaymentsForAdvanceToAffiliate100.0100.0

us-gaap:PaymentsForAdvanceToAffiliate us-gaap:BusinessAcquisition

hii:SanDiegoShipyard


Payments
Period End2021-06-302021-03-31
Value10.012
Percentage of PaymentsForAdvanceToAffiliate100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2020-12-312019-12-31
Value-12000000.07000000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2020-12-312020-09-302015-12-312012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.00.0120.00.00.04.050
Percentage of PaymentsOfDebtIssuanceCosts0.00.0100.00.00.00.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.07.00.00.00.0130.00.00.0230.00.00.0250.00.00.0560.01.00.0500.00.00.0540.00.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0100.00.0100.00.00.00.0100.00.00.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value40-1.00.03780.0-1.01.01950.00.00.06.00.0-1.022746
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.0100.00.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap:BusinessAcquisition

hii:HydroidInc


Payments
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.0-1.00.0378
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0100.00.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

hii:AlionScienceAndTechnology, us-gaap:SubsequentEvent


Payments
Period End2021-06-30
Value1650
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0

us-gaap:PensionAndOtherPostretirementBenefitContributions

us-gaap:PensionAndOtherPostretirementBenefitContributions


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value127210.0150563010.0251410.09.043460439.021556558.010.0125629.010.01061110.08.094471312278401256751277.08.0
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionContributions hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfCashContribution, hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan

us-gaap:PensionContributions

hii:DiscretionaryContribution, hii:NonQualified


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value2.02.02.02.02.02.02.02.01.02.02.03.01.02.02.02.02.01.02.01.02.01.01.01.01.01.01.00.01.01.01.01.00.01.01.01.02.00.0
Percentage of PensionContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0

hii:DiscretionaryContribution, hii:Qualified


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0600.014045200.0164.01.00.042450340.020346450.00.0114530.00.0972.00.00.084390.00.02693285242241
Percentage of PensionContributions0.03000.00.07000.02250.01000.00.0800.0400.050.00.014133.35000.01700.00.010150.02300.04500.00.00.05700.05300.00.00.09700.0200.00.00.00.00.00.00.026900.03200.00.02400.02200.04100.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.00.038571176221071179
Percentage of ProceedsFromRepaymentsOfLinesOfCredit0.00.00.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets


Proceeds
Period End2021-06-302021-03-31
Value-5.025
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0100.0

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets us-gaap:BusinessAcquisition

hii:Oilandgasservices


Proceeds
Period End2021-06-302021-03-31
Value0.025
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets-0.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312017-12-312017-09-302017-06-302017-03-31
Value1.0-8.0-1.0-3.00.00.0-12.0-7.029
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value14264.017174.04.013
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod


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
Value0100000.000100000.000300000.000200000.000400000.000800000.000800000.00600000.0900000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-08-272012-02-27
Value0200000.000100000.000100000.000100000.000100000.000200000.00100000.0100000.000200000.000400000.04000.0600000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted0.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.0100.0100.00.00.0100.00.00.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value178.09.04.0239.07.05.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value20500.00.00.084-370.0685236-1300.099247166-535.03713872-344.0683648381036429267.08025175-30.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value20500.00.00.084-370.0685236-1300.099247166-535.03713872-344.0683648381036429267.08025175-30.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease

us-gaap:UnrecognizedTaxBenefitsPeriodIncreaseDecrease


Unrecognized
Period End2021-06-302021-03-312020-09-302019-06-302018-12-312018-09-302018-06-30
Value2.03.020-1.011-1.015
Percentage of UnrecognizedTaxBenefitsPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1000000.01000000.01000000.01000000.002000000.02000000.01000000.0
Percentage of VariableLeaseCost100.0100.0100.0100.00.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-07-302021-04-302021-02-052020-10-302020-07-312020-05-01
Value404040404040
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0

dei:EntityNumberOfEmployees

dei:EntityNumberOfEmployees


Entity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value41000.042000.042000.042000.042000.042000.042000.041000.041000.040000.040000.040000.039000.039000.038000.037000.037000.037000.036000.0
Percentage of EntityNumberOfEmployees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityNumberOfEmployees us-gaap:StatementBusinessSegments

hii:TechnicalSolutions


Entity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value15.025.025.025.025.050.050.050.050.0
Percentage of EntityNumberOfEmployees0.00.10.10.10.10.10.10.10.1

hii:DeferredTaxAssetNetoperatinglossesandtaxcreditcarryforwards

hii:DeferredTaxAssetNetoperatinglossesandtaxcreditcarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value26171921221720
Percentage of DeferredTaxAssetNetoperatinglossesandtaxcreditcarryforwards100.0100.0100.0100.0100.0100.0100.0

hii:DeferredTaxAssetTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits

hii:DeferredTaxAssetTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value389348331263568571592366794618
Percentage of DeferredTaxAssetTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:DeferredTaxAssetsOperatingLeaseLiabilities

hii:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-31
Value5255
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.0

hii:DeferredTaxAssetsTaxDeferredExpenseWorkersCompensation

hii:DeferredTaxAssetsTaxDeferredExpenseWorkersCompensation


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value167154151167251263256248239219
Percentage of DeferredTaxAssetsTaxDeferredExpenseWorkersCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:DeferredTaxLiabilitiesContractAccountingDifferences

hii:DeferredTaxLiabilitiesContractAccountingDifferences


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value77624351108855345
Percentage of DeferredTaxLiabilitiesContractAccountingDifferences100.0100.0100.0100.0100.0100.0100.0100.0

hii:DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate us-gaap:RetirementPlanType

hii:DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value4.50.0450.0450.050.050.05
Percentage of DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostUltimateHealthCareCostTrendRate100.0100.0100.0100.0100.0100.0

hii:DefinedContributionPlanLiabilities

hii:DefinedContributionPlanLiabilities


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value38353032292726
Percentage of DefinedContributionPlanLiabilities100.0100.0100.0100.0100.0100.0100.0

hii:DisposalGroupIncludingDiscontinuedOperationLeaseLiability

hii:DisposalGroupIncludingDiscontinuedOperationLeaseLiability


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value2727282916
Percentage of DisposalGroupIncludingDiscontinuedOperationLeaseLiability100.0100.0100.0100.0100.0

hii:DisposalGroupsIncludingDiscontinuedOperationsValuationAllowance us-gaap:StatementBusinessSegments

hii:DisposalGroupsIncludingDiscontinuedOperationsValuationAllowance

hii:TechnicalSolutions


Disposal
Period End2020-09-302020-06-302020-03-312019-12-31
Value116.06.06.0
Percentage of DisposalGroupsIncludingDiscontinuedOperationsValuationAllowance100.0100.0100.0100.0

hii:InventoryWorkInProcessAndGeneralAndAdministrativeCostsIncludedInInventoryNetOfReserves

hii:InventoryWorkInProcessAndGeneralAndAdministrativeCostsIncludedInInventoryNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1220172537373037272934248221220248229222201256300417
Percentage of InventoryWorkInProcessAndGeneralAndAdministrativeCostsIncludedInInventoryNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPotentialVestingAsPercentageOfGrants us-gaap:Range, us-gaap:AwardType

hii:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPotentialVestingAsPercentageOfGrants

srt:Maximum, us-gaap:PerformanceShares


Share
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
Value200.0200.0200.0200.02.02.02.02.02.02.02.02.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPotentialVestingAsPercentageOfGrants100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsEBITDAPWeight us-gaap:AwardType

hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsEBITDAPWeight

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value40.00.40.50.50.50.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsEBITDAPWeight100.0100.0100.0100.0100.0100.0

hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsReturnonInvestedCapitalWeight us-gaap:AwardType

hii:ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsReturnonInvestedCapitalWeight

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value40.00.40.50.50.50.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentStockAwardsPerformanceGoalsReturnonInvestedCapitalWeight100.0100.0100.0100.0100.0100.0

hii:WorkersCompensationLiabilityUndiscounted

hii:WorkersCompensationLiabilityUndiscounted


Workers
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value752802845925835825846792719
Percentage of WorkersCompensationLiabilityUndiscounted100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableGross


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value39932126112031168107810451130909714
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value39731825211881164107410381123905711
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedEmployeeBenefitsCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value305302293320301265265299283264248267252244245258244208241211197186215216198183248226210194230205193199235194189189221190203
Percentage of AccruedEmployeeBenefitsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedPayrollTaxesCurrentAndNoncurrent

us-gaap:AccruedPayrollTaxesCurrentAndNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-31
Value132127125
Percentage of AccruedPayrollTaxesCurrentAndNoncurrent100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2.03.09.0154.04.07.07.04.03.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.02.02.01.0-1.0-3.03.0-4.0-7.0-7.09.0-9.0-13.0-13.0151528-33.0-4.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldInTrust

us-gaap:AssetsHeldInTrust


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value20319118216515313714713613012110911210493949087858280787674704746454343414033
Percentage of AssetsHeldInTrust100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldInTrust hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan

hii:NonQualified


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1421117861514743
Percentage of AssetsHeldInTrust78.075.571.664.962.263.595.6

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent


Assets
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value133154173178951.0
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0100.0

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent us-gaap:StatementBusinessSegments

hii:TechnicalSolutions


Assets
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value13315417317895
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0

us-gaap:BilledContractReceivables us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType

us-gaap:BilledContractReceivables

hii:OtherCustomers


Billed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.06.045167693964283316
Percentage of BilledContractReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Government


Billed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value396315216277249197180143158119
Percentage of BilledContractReceivables13200.05250.0480.0165.9360.9505.1281.2510.7478.8743.8

us-gaap:BillingsInExcessOfCostCurrent

us-gaap:BillingsInExcessOfCostCurrent


Billings
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value58537333114692948816699100721251411177874535878115139108114134112701181018583107
Percentage of BillingsInExcessOfCostCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BuildingsAndImprovementsGross

us-gaap:BuildingsAndImprovementsGross


Buildings
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value24422384204319231752157914981531148614311357
Percentage of BuildingsAndImprovementsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CapitalizedComputerSoftwareGross


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value234218211211199180172216208199185
Percentage of CapitalizedComputerSoftwareGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockValueOutstanding

us-gaap:CommonStockValueOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-03-312011-12-312010-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0000
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNet


Contract
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
Value1182128810491134113412119891218125912501003103910781064759
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value584517393380595556545587578566
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7396405685069209039006861141975
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsLiabilitiesNetNoncurrent

us-gaap:DeferredTaxAssetsLiabilitiesNetNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value869513397788510810212014016398921021142882672923142532823133361882042032122482533173296792128
Percentage of DeferredTaxAssetsLiabilitiesNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.0115.07.0129.0163729
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards us-gaap:TaxCreditCarryforward

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-31
Value15
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6.08.010.011161914201815
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9047524456219.0362763
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9297103106167161195205212219
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-31
Value5155
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value364303247223320310297337366347
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value85386996072888294197574976376576443683688792292610431080111686685696010018798669499394524375065291082106513161301762791833936420407381
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

hii:Qualified, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value80047123601762025530
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value82217315618363675672
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation102.7102.7102.8102.7102.6

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3.04288186.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-2010.0-1897.0-1780.0-1477.0-1589.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-67000.0-4516.7-2022.7-8205.6-26483.3

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-10.0-31.0-53.0-75.0-86.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value95819912268
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax-950.0-261.3-186.8-162.7-79.1

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.750.03350.04330.03850.0438
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.80.03390.04340.03820.0447
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate101.8101.2100.299.2102.1

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3.620.03610.03670.03710.0368
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value2.742.86
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

hii:Qualified, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value84787533633665965896
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value534510479553578566
Percentage of DefinedBenefitPlanBenefitObligation6.36.87.68.49.80.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value870677426519677860505635
Percentage of DefinedBenefitPlanBenefitObligation102.7102.8102.9102.8102.60.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value170173181201
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2127204519271830
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter1251.21182.11064.6910.4

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value33333335
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value295272254233
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths893.9824.2769.7665.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value38383841
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value376354326306
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive989.5931.6857.9746.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value38373740
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value356333306285
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour936.8900.0827.0712.5

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value36363738
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value336313285266
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree933.3869.4770.3700.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value35353536
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value317291266249
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo905.7831.4760.0691.7

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value33333335
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6020521508
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear181.8621.263.61451.4

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value771067335726583749114613
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets hii:DefinedBenefitPlansAndOtherPostretirementBenefitPlansTypeOfPlan, us-gaap:RetirementPlanType

hii:Qualified, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value77106733572658374911
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:Derivative


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1.08.04.01.02.01.01.04.01.02.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.00.10.10.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalents, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value781581111154439
Percentage of DefinedBenefitPlanFairValueOfPlanAssets1.02.31.92.00.90.8

us-gaap:CashAndCashEquivalents, hii:Planassetssubjecttoleveling


Defined
Period End2020-12-312019-12-312016-12-312015-12-31
Value3785165.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.51.30.30.1

us-gaap:CashAndCashEquivalents, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3725165.05.02.0182.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.50.40.30.10.00.00.00.0

us-gaap:CorporateDebtSecurities, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value240115193165119126
Percentage of DefinedBenefitPlanFairValueOfPlanAssets3.11.73.42.82.42.7

us-gaap:CorporateDebtSecurities, hii:Planassetssubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value193313671265128711261083
Percentage of DefinedBenefitPlanFairValueOfPlanAssets25.120.322.122.022.923.5

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value193313671265128711261083
Percentage of DefinedBenefitPlanFairValueOfPlanAssets25.120.322.122.022.923.5

us-gaap:EquitySecurities, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value188117011910201216531409
Percentage of DefinedBenefitPlanFairValueOfPlanAssets24.425.333.434.533.730.5

us-gaap:EquitySecurities, hii:Planassetssubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value22241735117412709881057
Percentage of DefinedBenefitPlanFairValueOfPlanAssets28.825.820.521.820.122.9

us-gaap:EquitySecurities, us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value22241735117412709881057
Percentage of DefinedBenefitPlanFairValueOfPlanAssets28.825.820.521.820.122.9

us-gaap:HedgeFunds, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value329307287281262312
Percentage of DefinedBenefitPlanFairValueOfPlanAssets4.34.65.04.85.36.8

us-gaap:Partnership, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value202884816
Percentage of DefinedBenefitPlanFairValueOfPlanAssets2.61.30.80.3

us-gaap:RealEstateInvestment, hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value317315302279309285
Percentage of DefinedBenefitPlanFairValueOfPlanAssets4.14.75.34.86.36.2

us-gaap:USTreasuryAndGovernment, hii:Planassetssubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value466859433409391294
Percentage of DefinedBenefitPlanFairValueOfPlanAssets6.012.87.67.08.06.4

us-gaap:USTreasuryAndGovernment, us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value466859433409391294
Percentage of DefinedBenefitPlanFairValueOfPlanAssets6.012.87.67.08.06.4

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:FairValueByFairValueHierarchyLevel

hii:Planassetsnotsubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value304726842851286823872171
Percentage of DefinedBenefitPlanFairValueOfPlanAssets39.539.949.849.148.647.1

hii:Planassetssubjecttoleveling


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value466340492875296925242442
Percentage of DefinedBenefitPlanFairValueOfPlanAssets60.560.150.250.951.452.9

us-gaap:FairValueInputsLevel1


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2261176011741270100410621071633516886
Percentage of DefinedBenefitPlanFairValueOfPlanAssets29.326.120.521.820.423.00.00.00.00.0

us-gaap:FairValueInputsLevel2


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2402228917011699152029543115323228862204
Percentage of DefinedBenefitPlanFairValueOfPlanAssets31.234.029.729.131.064.00.00.00.00.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value771067335726583749114613
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-534000000.0-510000000.0-479000000.0-553000000.0-578000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-996000000.0-1009000000.0-793000000.0-941000000.0-1139000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan186.5197.8165.6170.2197.1

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.50.0550.0550.060.065
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.50.0550.0550.060.065
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7710673357264440
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value8706774265195386
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value65907315618350015672
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value60726733572644404911
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0100.0100.0

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

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

srt:Maximum, hii:AlternativeInvestments


Defined
Period End2020-12-312019-12-31
Value25.00.25
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

srt:Maximum, hii:UnitedStatesEquitySecurities


Defined
Period End2020-12-312019-12-31
Value65.00.37
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage260.0148.0

srt:Maximum, us-gaap:FixedIncomeSecurities


Defined
Period End2020-12-312019-12-31
Value50.00.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage200.0200.0

srt:Minimum, hii:AlternativeInvestments


Defined
Period End2020-12-312019-12-31
Value10.00.1
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage40.040.0

srt:Minimum, hii:UnitedStatesEquitySecurities


Defined
Period End2020-12-312019-12-31
Value25.00.15
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.060.0

srt:Minimum, us-gaap:FixedIncomeSecurities


Defined
Period End2020-12-312019-12-31
Value25.00.25
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4.50.0450.0450.0450.05
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1 us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4.50.0450.0450.0450.05
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets us-gaap:StatementBusinessSegments

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets

hii:TechnicalSolutions


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value5374889474
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities us-gaap:StatementBusinessSegments

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities

hii:TechnicalSolutions


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value4260676562
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets us-gaap:StatementBusinessSegments

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets

hii:TechnicalSolutions


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value3436373723
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities us-gaap:StatementBusinessSegments

us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities

hii:TechnicalSolutions


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value2626262715
Percentage of DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment us-gaap:StatementBusinessSegments

us-gaap:DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment

hii:TechnicalSolutions


Disposal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value201817162.0
Percentage of DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:PerformanceShares


Employee
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
Value42502834424828333946253237432532384328313440253035382128333721354245232936
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:Partnership


Fair
Period End2020-12-31
Value518
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
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
Value681668655640625610599599587575564556-546.0-537.0528518508499488481476-470.0465458452446439431423417411407402397391387382377372367362352
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value5252515544
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value2828252516
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value2828253526
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value3737354537
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value4646455140
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0100.0100.0100.0100.0

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value29062906290629062906290629062877287728772877287728772877287728772877287728772877287728772877286128612802280227552755275527552755275527552755278027802780
Percentage of GoodwillImpairedAccumulatedImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss us-gaap:StatementBusinessSegments

hii:NewportNewsShipbuilding


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value11871187118711871187118711871187118711871187118711871187118711871187118711871187118711871187118711871187118711871187118711871187118711871187121212121212
Percentage of GoodwillImpairedAccumulatedImpairmentLoss40.840.840.840.840.840.840.841.341.341.341.341.341.341.341.341.341.341.341.341.341.341.341.341.541.542.442.443.143.143.143.143.143.143.143.143.643.643.6

hii:TechnicalSolutions


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value151151151151151151151122122122122122122122122122122122122122
Percentage of GoodwillImpairedAccumulatedImpairmentLoss5.25.25.25.25.25.25.24.24.24.24.24.24.24.24.24.24.24.24.24.2

us-gaap:GuaranteeObligationsCurrentCarryingValue us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:SuretyBond


Guarantee
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value276272272272273
Percentage of GuaranteeObligationsCurrentCarryingValue100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value14113317116310410814894
Percentage of IncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings

us-gaap:InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value139142137152160154136139126127128180174188183183204230210268280283285308319336339272294315311340321310288332357380
Percentage of InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1271221201271231171061029998941039995939597969498969492919395919596949193938988908781
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves


Inventory
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1730347775939088107134116170184189193217226241248176195219218246227220198250290402
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LandAndLandImprovements

us-gaap:LandAndLandImprovements


Land
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value309282321292252242233319314305
Percentage of LandAndLandImprovements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value48
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1224344511234641
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:RevolvingCreditFacility


Letters
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1515161616
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value6886939277
Percentage of LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent us-gaap:StatementBusinessSegments

hii:TechnicalSolutions


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value6886939277
Percentage of LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:RevolvingCreditFacility, us-gaap:SubsequentEvent


Line
Period End2021-06-30
Value1500
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility


Line
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value12351235123412341234
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtFairValue


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value18921874194325222492168713791642176515331292130013091331136113851385136913721387138913831343137417501804177918331878191018971943193519631974196519321864
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2021-03-312020-12-312020-09-302019-12-31
Value50050050084
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value500848484
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2021-06-30
Value84
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:NotesReceivableNet

us-gaap:NotesReceivableNet


Notes
Period End2021-06-302021-03-312020-12-312020-09-30
Value35343433
Percentage of NotesReceivableNet100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.14.10.0410.0414.20.0450.0450.045
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value41437728126924523124024122421720321316612912511711012212813512712512615612512712912713013111912311711677805249
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent


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
Value393397401374376378380345346348348413414414414430431431431424424423423513511509507486482480477656654807799594589586581579573567
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent

us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent


Pension
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
Value133133133130130130130131131131131139139139139147147147147143142143143143143143143139139139139148148166166172172172172145145146
Percentage of PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value133130131139147
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3634292523
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities27.126.222.118.015.6

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value229209183182154146142
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrescriptionDrugSubsidyReceiptsAfterYearFive us-gaap:RetirementPlanType

us-gaap:PrescriptionDrugSubsidyReceiptsAfterYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Prescription
Period End2020-12-31
Value2000000.0
Percentage of PrescriptionDrugSubsidyReceiptsAfterYearFive100.0

us-gaap:ReceivableWithImputedInterestDiscount

us-gaap:ReceivableWithImputedInterestDiscount


Receivable
Period End2021-06-302021-03-312020-12-312020-09-30
Value14151515
Percentage of ReceivableWithImputedInterestDiscount100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value47700488004600045300
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

hii:StockAwards


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-03-31
Value381000.0374000.0399000.0449000.0578000.0891000.01311000.01673000.01901000.02090000.01237000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value190.39190.95212.44213.03205.78201.91201.85201.82174.09174.45174.06146.83146.3142.84113.41113.06110.2475.7675.7375.7651.0249.9647.4541.3341.2541.0738.9238.92
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

hii:StockAwards


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-03-31
Value211.77201.92174.07147.13113.9575.7351.2340.9239.9239.6931.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312013-02-192012-08-272012-02-27
Value179.21178.41230.1231.16229.42210.24210.26210.24261.89260.69262.76218.36219.47219.47133.08131.77132.81142.02142.34142.4198.0998.0998.0945.5445.5445.5445.5440.0335.92
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue94.193.4108.3108.5111.5104.1104.2104.2150.4149.4151.0148.7150.0153.6117.3116.5120.5187.5188.0188.0192.3196.3206.7110.2110.4110.90.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, hii:A2012LongTermIncentiveStockPlan


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-08-27
Value229.06210.24261.88218.54134.53142.0298.2244.6734.7140.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStock, hii:A2012LongTermIncentiveStockPlan


Share
Period End2020-12-312018-12-312017-12-312015-12-312014-12-31
Value192.26225.68188.13115.5101.21
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue0.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber


Share
Period End2021-06-302021-03-312020-09-30
Value462000.0459000.0376000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber us-gaap:AwardType, us-gaap:PlanName

us-gaap:RestrictedStock, hii:A2012LongTermIncentiveStockPlan


Share
Period End2020-12-312015-12-312014-12-31
Value2400.010000.011000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber0.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

hii:A2012LongTermIncentiveStockPlan


Share
Period End2020-12-31
Value3400000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

hii:A2012LongTermIncentiveStockPlan


Share
Period End2020-12-31
Value3800000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0

us-gaap:ShortTermBorrowings us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ShortTermBorrowings

hii:A364DayTermLoan, us-gaap:SubsequentEvent


Short
Period End2021-06-30
Value400
Percentage of ShortTermBorrowings100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardAmount

us-gaap:StateAndLocalJurisdiction


Tax
Period End2020-12-31
Value20
Percentage of TaxCreditCarryforwardAmount100.0

us-gaap:TaxCreditCarryforwardValuationAllowance us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardValuationAllowance

us-gaap:StateAndLocalJurisdiction


Tax
Period End2020-12-31
Value11
Percentage of TaxCreditCarryforwardValuationAllowance100.0

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnamortizedDebtIssuanceExpense


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value1617192729181920212122232425262324252728-29.0-30.032303539424446480.0
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:CreditFacility

us-gaap:RevolvingCreditFacility


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.03.05.06.07.06.07.0
Percentage of UnamortizedDebtIssuanceExpense18.817.626.322.224.133.336.8

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility, hii:HiiCreditFacility


Unamortized
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value5.07.07.08.08.08.09.09.010.0116.07.07.08.08.09.09.010.010.0
Percentage of UnamortizedDebtIssuanceExpense26.336.835.038.138.136.439.137.540.042.326.129.228.029.628.6-31.0-30.031.233.3

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:LongtermDebtType

us-gaap:SeniorNotes


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value131414212212121313131414151515171718192020212220
Percentage of UnamortizedDebtIssuanceExpense81.282.473.777.875.966.763.265.061.961.963.660.962.560.057.773.970.872.070.471.4-69.0-70.068.866.7

us-gaap:UnbilledContractsReceivable

us-gaap:UnbilledContractsReceivable


Unbilled
Period End2020-12-312019-12-312018-12-312017-12-31
Value10499891003759
Percentage of UnbilledContractsReceivable100.0100.0100.0100.0

us-gaap:UnbilledContractsReceivable us-gaap:AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyType

hii:OtherCustomers


Unbilled
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value858310426205935151722
Percentage of UnbilledContractsReceivable8.18.410.43.40.00.00.00.00.00.0

us-gaap:Government


Unbilled
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value964906899733830783766944701557
Percentage of UnbilledContractsReceivable91.991.689.696.60.00.00.00.00.00.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2000000.02000000.01000000.01000000.03000000.03000000.03000000.02000000.03000000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3736344830251.02.017115.01.0
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value22151212111114122118
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WorkersCompensationLiabilityCurrent

us-gaap:WorkersCompensationLiabilityCurrent


Workers
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
Value229227225233230229225228227225225234253252250220218218217227228228227226224223221233233232230225223222216216201201201198197197
Percentage of WorkersCompensationLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WorkersCompensationLiabilityNoncurrent

us-gaap:WorkersCompensationLiabilityNoncurrent


Workers
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
Value519515511470464462457455459459454471506512509448443443441462462462460458454453449424424422419409406404403383364362361353351351
Percentage of WorkersCompensationLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


COGS Ratio
us-gaap:ProductOrService
(None,)
C O G S  Ratious-gaap: Product Or Service
Operating Margin
us-gaap:StatementBusinessSegments
(None,)
Operating  Marginus-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService
(None,)
Cost Of Goods And Services Soldus-gaap: Product Or Service
us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments
(None,)
Operating Income Lossus-gaap: Statement Business Segments
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
us-gaap:Revenues
us-gaap:StatementBusinessSegments
(None,)
Revenuesus-gaap: Statement Business Segments
us-gaap:Revenues
hii:Contracttype
(None,)
Revenueshii: Contracttype
us-gaap:Revenues
hii:Contracttype, us-gaap:StatementBusinessSegments
('hii:Intersegment', None)
Revenueshii: Contracttype, us-gaap: Statement Business Segments
us-gaap:Revenues
hii:Contracttype, us-gaap:StatementBusinessSegments
(None, 'hii:TechnicalSolutions')
Revenueshii: Contracttype, us-gaap: Statement Business Segments
us-gaap:Revenues
hii:MajorPrograms, us-gaap:StatementBusinessSegments
(None, 'hii:NewportNewsShipbuilding')
Revenueshii: Major Programs, us-gaap: Statement Business Segments
us-gaap:Revenues
hii:MajorPrograms, us-gaap:StatementBusinessSegments
(None, 'hii:TechnicalSolutions')
Revenueshii: Major Programs, us-gaap: Statement Business Segments
us-gaap:Revenues
hii:MajorPrograms, us-gaap:StatementBusinessSegments
(None, 'hii:Ingalls')
Revenueshii: Major Programs, us-gaap: Statement Business Segments
us-gaap:Revenues
us-gaap:MajorCustomers
(None,)
Revenuesus-gaap: Major Customers
us-gaap:Revenues
us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments
('hii:Intersegment', None)
Revenuesus-gaap: Major Customers, us-gaap: Statement Business Segments
us-gaap:Assets
us-gaap:StatementBusinessSegments
(None,)
Assetsus-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
(None,)
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrentus-gaap: Retirement Plan Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Accumulated Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:Bonds')
Debt Instrument Interest Rate Stated Percentageus-gaap: Debt Instrument, us-gaap: Longterm Debt Type