IFF


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockParOrStatedValuePerShare

us-gaap:SharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical
us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByType

us-gaap:Revenues

us-gaap:CostOfGoodsAndServicesSold
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:GrossProfit

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:ReceivablesNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementGeographical
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:Restatement, us-gaap:BusinessAcquisition

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest
us-gaap:StatementEquityComponents

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:LongtermDebtType
us-gaap:TaxCreditCarryforward
us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensation

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
iff:DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
iff:DefinedBenefitPlanAmortizationAndDeferralsNet
us-gaap:RetirementPlanType
us-gaap:StatementBusinessSegments
iff:FDAMandatedProductRecall

iff:FinanceLeaseCost

iff:IncreaseInRedemptionValueRedeemableNoncontrollingInterest

iff:NetIncomeLossAvailableToCommonStockholdersAdjustment
us-gaap:StatementEquityComponents
iff:NoncontrollingInterestImpactOfForeignExchangeTranslation
us-gaap:StatementBusinessSegments
iff:OperationalImprovementInitiativeCosts
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
iff:ProceedsFromSaleOfAccountsReceivable

iff:ProceedsFromTerminationOfLifeInsuranceContracts
us-gaap:RestructuringPlan
iff:RestructuringAndRelatedCostNumberOfSitesClosed
us-gaap:StatementGeographical, us-gaap:RestructuringPlan

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:AmortizationOfIntangibleAssets
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationIntegrationRelatedCosts

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnSaleOfPropertyPlantEquipment
us-gaap:StatementBusinessSegments

us-gaap:GoodwillPeriodIncreaseDecrease
us-gaap:ReportingUnit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaidNet
us-gaap:StatementEquityComponents
us-gaap:MinorityInterestChangeInRedemptionValue

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:OtherRestructuringCosts

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentForContingentConsiderationLiabilityInvestingActivities

us-gaap:PaymentsForRepurchaseOfRedeemableNoncontrollingInterest

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PensionContributions
us-gaap:StatementBusinessSegments
us-gaap:PensionExpense
us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName
us-gaap:ProceedsFromIncomeTaxRefunds
us-gaap:StatementGeographical, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:StatementBusinessSegments

us-gaap:RestructuringReserveAccrualAdjustment1
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RestructuringReserveSettledWithoutCash2
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
iff:GainContingencyExpectedRelocationPayments

us-gaap:AccountsReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:Restatement, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:FairValueByMeasurementBasis
us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeAssets

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves
us-gaap:FairValueByMeasurementBasis
us-gaap:LoansPayableFairValueDisclosure
us-gaap:Range
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:OtherAssetsMiscellaneousNoncurrent
us-gaap:LongtermDebtType
us-gaap:OtherLongTermDebtNoncurrent

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:RestrictedCashCurrent

us-gaap:RestrictedCashNoncurrent

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:SeniorLongTermNotes
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementBasis
us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:ShortTermBorrowings

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:BalanceSheetLocation
us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
us-gaap:Range, us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1616161616161614141414141414141414141414141414141414141414141414141414NANANA
us-gaap:CommonStockParOrStatedValuePerShare ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁▁▁▁0.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.12512.512.50.1250.1250.1250.125NANANA
us-gaap:SharesOutstanding ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁2121212121213636363636363636363636353535353534343434343434342023430234NANANANANANA
us-gaap:CommonStockSharesIssued ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁▁▁▁128128128128128128115115115115115115115115115115115115115115115115115115115115115115115115761115761115115115115NANANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁▁▁▁1061061061061061069179787878787879797979808080808081818181818181815588145981808080NANANA
us-gaap:CommonStockSharesAuthorized ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁▁▁▁500500500500500500500500500500500500500500500500500500500500500500500500500500500500500500000500000500500500500NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 113NA113112113NA817979NA797979NA798080NA808181NA818181828282NA818181818181808079
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 112NA111111111NA817979NA797979NA797979NA808080NA808081818181NA818180808080797978
us-gaap:EarningsPerShareBasic ▆▅▆▇▆▂▇▇█▁▇▇▇▆▆▇█▆▇▇█▆▇▇▇▇▇▆▅▃▆▆▆▆▆▆▅▅1.160.711.151.210.97-0.249999999999999561.181.251.63-0.51000000000000021.391.391.461.01.131.461.480.99000000000000021.321.31.581.10999999999999991.321.351.311.211.251.110.83000000000000010.21.091.01.010.941.040.960.840.8
us-gaap:EarningsPerShareDiluted ▆▅▆▇▆▂▆▇█▁▇▇▇▆▆▇▇▆▇▇█▆▇▇▇▇▇▆▅▃▆▆▆▆▆▆▅▅1.150.70000000000000021.131.20.96-0.251.171.251.63-0.499999999999999561.391.381.451.01.121.461.470.98000000000000041.311.291.571.10999999999999941.311.351.31.21.241.10.83000000000000010.21.080.991.00.931.030.950.830.8
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▇▇▇▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▁▁▁134712831267129112971219907920930854872842828762777793783715765767774756773788770742757727680708721710713715714673665653
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,iff:Flavors█▁▁▂█▁▂▂830429423434804401436450NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,iff:Fragrances█▃▄▃▅▁▃▂516478480475492457471469NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments iff:ConsumerFragrance,iff:Fragrances314NANANA283NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments iff:FlavorCompounds,iff:Flavors576NANANA567NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments iff:NaturalProductSolutions,iff:Flavors155NANANA136NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments iff:Flavors830NANANA804NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments iff:Fragrances516NANANA492NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:Asia309NANA293287NANA242NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:LatinAmerica191NANA176178NANA135NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:NorthAmerica303NANA293301NANA249NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical us-gaap:EMEA543NANA528529508285292309272276259257NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical,us-gaap:ConcentrationRiskByType country:US,us-gaap:GeographicConcentrationRisk270NANANA272NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical,us-gaap:ConcentrationRiskByType iff:AllForeignCountries,us-gaap:GeographicConcentrationRisk1076NANANA1024NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues █▇▇▇▇▇▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▁▁▁134712831267129112971219907920930854872842828762777793783715765767774756773788770742757727680708721710713715714673665653
us-gaap:CostOfGoodsAndServicesSold ██▇▇█▇▁▁781781734745766741506521NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit █▆▇▇▇▆▃▃▄▂▃▃▂▁▂▂▂▁▂▂▂▁▂▂▂565502533546531477400398405357382374364326346365360313347345346327340352341NANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense ▇▇▇▇█▇▅▅▆▅▄▄▄▃▃▃▃▂▃▃▃▃▃▄▃▃▃▂▃▂▂▂▁▂▂▁▂▁8585858490837574787570706963646363576262636263666165645962575657535657535552
us-gaap:SellingGeneralAndAdministrativeExpense ▇█▆▆▆█▄▄▃▃▃▃▃▄▄▃▂▂▂▃▂▃▂▃▂▂▂▂▂▂▂▁▁▁▁▂▂▂22924221021021324915715714213914113514015715213212312612713412013512313212311812411412510911210596106106108119108
us-gaap:OperatingIncomeLoss █▂▇█▆▁▅▅▆▃▅▅▄▂▃▆▆▃▅▅▅▃▅▅▅▄▄▄▁▄▃▃▃▂▄▃▂1961161841991639515915417412715715913711112416416712115614816113015215315614114213799134132120128117133120107NA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,iff:Flavors█▁▃▃▅▁▃▅▅1377897981087796109111NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,iff:Fragrances█▂▄▅▄▁▅▃▆1057283918568878093NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ▅▅▅▅▅▆▃█▂▂▃▂▁▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁323533323638235316151917121213151211111111121011111112111091010101211121212
 us-gaap:InterestExpense us-gaap:DerivativeInstrumentRisk,us-gaap:StatementEquityComponents us-gaap:InterestRateSwap,us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges█▁███████216000.0213000.0216000.0216000.0216000.0216000.0216000.0216000.0216000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▁▇▄▄▅▅▄█▃▄▄▃▆▄▄▄▃▂▃▃▄▃▃▄▃▄▆▄▃▃▃▃▂▃▂▃▃▃-101552794200320134220-6-105004-141110-200-5-1-6-2-2-2
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁█▄▆▆▆▆▅▆▆▆▆▆▅▆▆▆▅▅▆▅▅▆▆▆▆▆▆▆▆▅▆▅▆-452200-204-1442-1-27-8514241913-3-57-6-414-42-4817-50-42-257-95-1701526-5228-5810NANANANA
us-gaap:IncomeTaxExpenseBenefit ▂▂▂▂▂▃▁▂▂█▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▂▂▆▂▂▂▂▂▂▂▂26162730235042229155313222232335362336312827343636343836201053329302831292625
 us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementEquityComponents us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges█▇▇██▆▁▂▂295000.0269000.0276000.0331000.0339000.0167000.0-407000.0-333000.0-313000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▇▅██▆▁▆▆█12780129137109149599130NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▁█▄▇▇▅▆▅▇▅▇▇▆▅▆▇▇▆▆▇▆▄▆▇▆▆▆▆▅▆▆▆▅▆▆▇▆▆-322234-72125153257327146-201291151141186115125775112295-5192123102108889526424311331911131154354
us-gaap:NetIncomeLoss 124NA127138111159599129-4011010911579891161187910610512890107110106991029068168881827684776763
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▇▅▇█▆▁▆▆█12483127136108139599129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest █▁████▅▅▅2-32222000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents iff:RedeemableNoncontrollingInterest▇▁█▇▇1-4211NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:Assets ██████▅▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁12689132871298413348132111288996154673468145984520461842524016409741544162372139113653350734943476340033213324330832003249305930253013295330082946NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██████▅▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁12689132871298413348132111288996154673468145984520461842524016409741544162372139113653350734943476340033213324330832003249305930253013295330082946NANANA
us-gaap:StockholdersEquity ▇█████▅▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁58276217605561996143603240311749177316841757167416261626169316731630159015911623156715181639159815161435136913061248124712231197119511841098NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▃▃▃▃▃▃█▂▂▂▂▂▁▁▂▂▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁28182942289829902925294169462026197018961849199317111609185719291891145516381722175517101712164415691633163315341572138813641345138314391387NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▂▂▁▂▂█▁▁▁▁▂▁▁▂▂▂▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁4336064944264836345274322305368316491300323498539528181272377443478404326268343365300324971047610712311111411089
us-gaap:ReceivablesNetCurrent ▇▁▇██▇▆▆▆▅▅▅▅▄▅▅▅▄▅▅▄▄▅▅▅▄▄▄▄▄▄▄9436094210461003937701723734663691665637550587621609537569566525493562583574553541527499534516521NANANANANANA
us-gaap:InventoryNet ▇███▇▇▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁▁▁▁▁▁▂▂107511231126116311141078719695687649619623604592585584600589589561536568556554552520512515540547539555534568559NANANA
us-gaap:OtherAssetsCurrent █▇▇▇▇▅▅▆▄▃▄▃▂▁▃▂▁▁▃▃▄▁▂▁▁▂▂▁▁▂▁▁▂▁▁356319325325310277251285242215222213169142186183152146194201232141165148144155156138142153149137173147137NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross ████▇▇▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁26322690261626312581249221242098213920902073202219751913187618501839181217791778171317661796181418051579154515241532149514461463138313981372NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █████▇▇▇▇▇▇▇▆▅▅▅▅▅▅▄▄▄▅▅▅▂▂▂▂▂▁▁▁▁▁1293130313021315128712511250123012511210124412111183113711311113110510791070106310211046109511151109922894879877875842851819834821NANANA
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▇▇▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁133913861313131612941241874867887880828811791775745737733732708714692720700698696656651644654619604611563564551NANANA
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical country:CN█▁199188NANANA178NANANA135NANANA117NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ██████▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁52675497538155065434537811521148116611561153114511201000941940951941932752675675675675676665665665665665665665665665665NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▇█████▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁267728512829294429743039385391414415424426390365284288302306323156747678808332333536383941444547NANANA
us-gaap:OtherAssetsNoncurrent ██▇██▄▂▂▂▂▁▁▁▂▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂5866085615905832881671571551491069189127120119122119129132130129148150141175169164159189190184177178174NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesCurrent ▇█▇▅▅▅▃▂▃▃▂▄▄▄▃▂▃▃▂▁▁▁▁▁▁▁▂▁▂▂▁▁▂▂▂142615521412114911441128758699716768696861985898855688712742687523487518516468484509566540622652507520575628633NANANA
us-gaap:DebtCurrent ███▃▃▂▂▁▂▁▁▆▆▆▆▃▃▃▃▁▁▁▁▁▁▁▃▃▄▅▃▃▄▅▄385384384848448456366725725825825713313313213388893201001001502268792154216185NANANA
us-gaap:LongTermDebtCurrent ███▃▃▂▂▁▂▁▂▆█▆▆▃▃▃▃▁▁▁▁▁▁▁▃▃▄▅▃▃▄3853843848484484563664725736525825713313313213388893201001001502268792154NANANANANA
us-gaap:AccountsPayableCurrent ▇█▆▇▇▇▄▄▄▅▃▃▃▃▃▃▃▄▃▃▂▂▂▂▂▁▁▁▂▁▁▂▁▁▂456510416463476471312315324338271265277274259255276302254241215229207195208176176159199160169189180166185NANANA
us-gaap:OtherLiabilitiesCurrent ▅█▅▆▅▇▃▃▃▅▂▂▂▄▂▂▂▃▂▁▁▂▂▁▂▂▂▂▃▁▁▁▁▁▂418576419429414530257263250369248232248314228205217262199187183242194184193214203214270172176168161178198NANANA
us-gaap:DividendsPayableCurrent ██████▆▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▁▁▁8080807777776654545454505050504444444438373737313131NANA0272525292121NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesNoncurrent ▇▇▇███▆▃▃▂▂▂▂▁▂▂▂▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁53185406539058735798563548192217218521402061207716341487154317881814138416281503144714531316132913151375136713491374115612911291117911911209NANANA
us-gaap:LongTermDebtNoncurrent ▇▇▇████▃▃▃▃▃▂▂▂▂▂▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁394639974008442844214504433117171676163216251636118610661110135713699371057989935934933932931933932915881676777777757767786NANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▃▃▁▁▁▂▁▁▁▂▂▃▃▂▂▂▂▂████▁▂▂▅▅▅▇▆▆▆▁▁▁261265217222225227218226226228241251250243244244243242354353353354218238238297297297337315314315223223222NANANA
us-gaap:MinorityInterest ██▇▆▇▆▃▃▃▃▃▃▃▂▂▂▃▂▂▁▂▂▂▁▂▁▂▂▁▁▁▁▁▂▂12121110111066555554445443444343443333344NANANA
 us-gaap:MinorityInterest us-gaap:StatementEquityComponents iff:RedeemableNoncontrollingInterest▅▅███▁1029911411511481NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▇███▇▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂4945025305144922172352382452421561511581371471441571601711151131181161101051029492110118153151150150149NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▇█████▅▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁58276217605561996143603240311749177316841757167416261626169316731630159015911623156715181639159815161435136913061248124712231197119511841098NANANA
us-gaap:CommonStockValue ███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1616161616161614141414141414141414141414141414141414141414141414141414NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ████▇▇▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▄▄▄▄▃▃▂▂▂▂▂▁▁▁41624117411440694011395640213992394738703965390938503818378937503678360435693508344133503298322931503045297829042841280028122748269326362582NANANA
us-gaap:TreasuryStockValue ▁▁▁▁▁▁███████▇▇▇▇▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄10211022102310231029103017311732173517261721172117131679164416231598155515171476145014461410139313831346133813391330133313351352135713591377NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▄▃▅▅▄▄▅▅▅▅▅▅▅▅▅▅▅▅▆▅▆▇▇▇▇▇▇▇▇▇▇████▇-1164-716-867-668-657-702-715-692-620-637-656-676-681-680-611-608-606-613-611-556-573-540-399-383-397-403-412-398-403-361-388-342-280-230-245-265-303NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂█▅▄▂▆▄▃▁▅▄▂▂▆▅▄▂▄▄▄▂▆▅▄▂163151981374723514666-111911413621206174122311381281343120016311934NA99181807NA52NANA-34NANA32
us-gaap:NetCashProvidedByUsedInInvestingActivities █████▁███████████████████-42-68-11-55-90-4910-32-34-35-36-31-69-162-289-25-19-21-31-331-197-17-40-37-21-122NA-14-28-31-30NA-27NANA-19NANA-14
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁▁▁█▁▁▁▁▂▂▁▁▁▂▁▂▁▁▁▁▁▁-107-139-131-122-112494845-9-14-100-286229113-85-187-86339-198113-7-39-74-38-40-49NA-15-117711NA-38NANA34NANA-7
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂█▅▄▂▆▄▃▁▅▄▂▂▆▅▄▂▄▄▄▂▆▅▄▂163151981374723514666-111911413621206174122311381281343120016311934NA99181807NA52NANA-34NANA32
us-gaap:NetIncomeLoss 124NA127138111159599129-4011010911579891161187910610512890107110106991029068168881827684776763
us-gaap:ProfitLoss ▇▅██▆▁▆▆█12780129137109149599130NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▇█▇▇▇▇▂▂▂▂▂▂▂▂▂▁▂▂▂▁▁▁▁▂▁80878073817731313332292926272523262424211920192622NA20192019NA19NANA17NANA20
us-gaap:IncreaseDecreaseInInventories ▃▁▄█▆▆▆▇▆▆▂▄▃▂▃▄▃▄▅▆▂▅▆▃▃0-221246242424373025-1040-15-710-352123-131823-20NA3-18-8-1NA0NANA11NANA6
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █████▁███████████████████-42-68-11-55-90-4910-32-34-35-36-31-69-162-289-25-19-21-31-331-197-17-40-37-21-122NA-14-28-31-30NA-27NANA-19NANA-14
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅█▄▆▆▇▃▃▃▅▃▁▂▆▂▁▁▃▂▁▁▄▃▂▃48754161576735343351311926562620223428181945372633NA30294130NA28NANA19NANA12
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁▁▁█▁▁▁▁▂▂▁▁▁▂▁▂▁▁▁▁▁▁-107-139-131-122-112494845-9-14-100-286229113-85-187-86339-198113-7-39-74-38-40-49NA-15-117711NA-38NANA34NANA-7
us-gaap:RepaymentsOfLongTermDebt ▁▂▂▁▂▃█▁▁▁115453113687288000NANANA0NANANA-300NANA00NANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:RepaymentsOfLongTermDebt ▁▂▂▁▂▃█▁▁▁115453113687288000NANANA0NANANA-300NANA00NANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType iff:TermLoanCreditAgreement,us-gaap:LoansPayable████▁▁0.03650.03650.03650.03650.0364850.036485NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType iff:AmortizingNote█████▁0.06090.06090.06090.06090.06090.0581NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType iff:SeniorNotesDueTwoThousandandTwenty▁▁▁▁▁▁█0.03690.03690.03690.03690.03690.03690.0373NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne██████▁0.00820.00820.00820.00820.00820.00820.0078NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType iff:SeniorNotesEuroNotesDueTwoThousandTwentySix▄▄▄▄▄▄▄0.01930.01930.01930.01930.01930.01930.0193NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value161616161616161414141414141414141414141414141414141414141414141414141414141414
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.20.30.30.30.30.30.30.40.40.30.30.40.40.40.40.40.40.40.40.40.40.40.50.40.50.50.50.50.50.50.50.50.5

Common Stock Par Or Stated Value Per Share

us-gaap:CommonStockParOrStatedValuePerShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value0.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.1250.12512.512.50.1250.1250.1250.1250.1250.1250.125
Percentage of CommonStockParOrStatedValuePerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Shares Outstanding

us-gaap:SharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2121212121213636363636363636363636353535353534343434343434343420234302343435
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-21-2121-2121-2136-36363636353534-3434353637
Percentage of SharesOutstanding-100.0-100.0100.0-100.0100.0-100.0100.0-100.0100.0100.0100.0100.0100.0100.0-100.0100.0100.00.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value128128128128128128115115115115115115115115115115115115115115115115115115115115115115115115115761115761115115115115115115115
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value106106106106106106917978787878787979797980808080808181818181818181815588145981808080808079
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value500500500500500500500500500500500500500500500500500500500500500500500500500500500500500500500000500000500500500500500500500
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value113113112113817979797979798080808181818181828282818181818181808079
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value112111111111817979797979797979808080808081818181818180808080797978
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1.160.711.151.210.97-0.249999999999999561.181.251.63-0.51000000000000021.391.391.461.01.131.461.480.99000000000000021.321.31.581.10999999999999991.321.351.311.211.251.110.83000000000000010.21.091.01.010.941.040.960.840.8
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1.150.70000000000000021.131.20.96-0.251.171.251.63-0.499999999999999561.391.381.451.01.121.461.470.98000000000000041.311.291.571.10999999999999941.311.351.31.21.241.10.83000000000000010.21.080.991.00.931.030.950.830.8
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value134712831267129112971219907920930854872842828762777793783715765767774756773788770742757727680708721710713715714673665653
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, iff:Flavors



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value830429423434804401436450
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.633.533.433.662.032.948.149.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.633.533.433.662.032.948.149.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments iff:Flavors100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, iff:Fragrances



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value516478480475492457471469
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.437.337.936.838.037.651.951.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.437.337.936.838.037.651.951.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments iff:Fragrances100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

iff:ConsumerFragrance, iff:Fragrances



Period End2020-03-312019-03-31
Value314283
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.321.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.321.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:ConsumerFragrance iff:Fragrances100.0100.0

iff:FineFragrances, iff:Fragrances



Period End2020-03-312019-03-31
Value94106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.08.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.08.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:FineFragrances iff:Fragrances100.0100.0

iff:FlavorCompounds, iff:Flavors



Period End2020-03-312019-03-31
Value576567
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.843.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.843.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:FlavorCompounds iff:Flavors100.0100.0

iff:FlavorIngredients, iff:Flavors



Period End2020-03-312019-03-31
Value2428
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:FlavorIngredients iff:Flavors100.0100.0

iff:FragranceIngredients, iff:Fragrances



Period End2020-03-312019-03-31
Value108103
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.18.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.18.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:FragranceIngredients iff:Fragrances100.0100.0

iff:Inclusions, iff:Flavors



Period End2020-03-312019-03-31
Value3028
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:Inclusions iff:Flavors100.0100.0

iff:NaturalProductSolutions, iff:Flavors



Period End2020-03-312019-03-31
Value155136
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.610.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.610.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:NaturalProductSolutions iff:Flavors100.0100.0

iff:NutritionAndSpecialtyIngredients, iff:Flavors



Period End2020-03-312019-03-31
Value4344
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:NutritionAndSpecialtyIngredients iff:Flavors100.0100.0

us-gaap:StatementBusinessSegments

iff:Flavors



Period End2020-03-312019-03-31
Value830804
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.662.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.662.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:Flavors100.0100.0

iff:Fragrances



Period End2020-03-312019-03-31
Value516492
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.438.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.438.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:Fragrances100.0100.0

us-gaap:StatementGeographical

srt:Asia



Period End2020-03-312019-06-302019-03-312018-06-30
Value309293287242
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.022.722.226.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.022.722.226.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Asia100.0100.0100.0100.0

srt:LatinAmerica



Period End2020-03-312019-06-302019-03-312018-06-30
Value191176178135
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.213.613.814.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.213.613.814.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:LatinAmerica100.0100.0100.0100.0

srt:NorthAmerica



Period End2020-03-312019-06-302019-03-312018-06-30
Value303293301249
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.522.823.227.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.522.823.227.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:NorthAmerica100.0100.0100.0100.0

us-gaap:EMEA



Period End2020-03-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value543528529508285292309272276259257
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.340.940.841.731.531.833.231.831.730.831.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.340.940.841.731.531.833.231.831.730.831.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EMEA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByType

country:US, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value270272
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.121.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.121.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US us-gaap:GeographicConcentrationRisk100.0100.0

iff:AllForeignCountries, us-gaap:GeographicConcentrationRisk



Period End2020-03-312019-03-31
Value10761024
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.979.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.979.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:AllForeignCountries us-gaap:GeographicConcentrationRisk100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value134712831267129112971219907920930854872842828762777793783715765767774756773788770742757727680708721710713715714673665653
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Goods Net

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value781781734745766741506521
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.060.957.957.759.160.855.956.7

us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeContract, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value222221-3
Percentage of CostOfGoodsAndServicesSold0.30.30.30.40.40.2-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.20.20.20.1-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ForeignExchangeContract us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.0

Cost Of Goods Sold

Gross Profit

us-gaap:GrossProfit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value565502533546531477400398405357382374364326346365360313347345346327340352341
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.039.142.142.340.939.244.143.343.641.943.844.444.042.944.646.146.043.845.445.044.743.444.044.744.3

Costs And Expenses

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value8585858490837574787570706963646363576262636263666165645962575657535657535552
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.46.76.76.67.06.88.38.18.48.88.18.38.48.38.38.08.18.08.28.18.28.28.28.48.08.88.58.19.18.17.88.17.57.98.07.98.48.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value22924221021021324915715714213914113514015715213212312612713412013512313212311812411412510911210596106106108119108
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.018.916.616.316.420.517.417.115.316.316.216.116.920.719.616.715.817.716.717.515.617.915.916.916.115.916.515.818.515.515.614.813.614.814.916.218.016.5

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1961161841991639515915417412715715913711112416416712115614816113015215315614114213799134132120128117133120107
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.69.114.615.512.67.817.516.818.814.918.118.916.614.616.020.721.316.920.519.420.917.319.719.420.319.118.818.914.618.918.317.018.016.518.717.916.2

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-20-9-8-12-18-10-19-20-23
Percentage of OperatingIncomeLoss-10.4-8.5-4.5-6.4-11.4-11.3-12.3-13.3-13.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.5-0.8-0.7-1.0-1.4-0.9-2.2-2.2-2.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, iff:Flavors



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1377897981087796109111
Percentage of OperatingIncomeLoss70.067.252.849.166.281.460.670.963.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.26.17.77.68.46.410.611.912.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments iff:Flavors16.518.323.022.613.519.322.124.30.0

us-gaap:OperatingSegments, iff:Fragrances



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1057283918568878093
Percentage of OperatingIncomeLoss53.762.545.245.652.471.454.952.353.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.85.76.67.16.65.69.68.810.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments iff:Fragrances20.415.317.419.217.414.918.617.20.0

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value323533323638235316151917121213151211111111121011111112111091010101211121212
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.82.62.52.83.22.65.81.81.82.22.11.51.61.71.91.61.61.51.51.41.61.41.41.51.61.71.51.51.41.51.51.41.71.61.81.81.9

us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:InterestRateSwap, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value216000.0213000.0216000.0216000.0216000.0216000.0216000.0216000.0216000.0
Percentage of InterestExpense0.70.60.60.70.60.60.90.41.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateSwap us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value-101552794200320134220-6-105004-141110-200-5-1-6-2-2-2
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.81.20.40.20.60.80.52.20.10.40.30.11.70.60.30.30.0-0.9-0.3-0.10.7-0.10.10.6-0.20.51.50.1-0.0-0.30.10.0-0.8-0.1-0.8-0.3-0.3-0.4

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-452200-204-1442-1-27-8514241913-3-57-6-414-42-4817-50-42-257-95-1701526-5228-16-5810
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.615.6-16.2-1.13.3-0.1-3.0-9.31.62.92.31.6-0.4-7.6-0.8-0.61.8-6.0-6.32.3-6.5-5.6-3.21.0-1.20.8-2.30.02.33.7-7.34.00.0-8.21.4

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-452-204-1442-1-27-8514
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-33.6-16.2-1.13.3-0.1-3.0-9.31.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value26162730235042229155313222232335362336312827343636343836201053329302831292625
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.32.12.41.84.20.52.53.218.23.63.82.73.13.04.54.63.34.84.13.63.64.54.64.74.75.15.13.014.94.74.14.24.04.44.34.03.9

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1106-50000
Percentage of IncomeTaxExpenseBenefit3.99.01.721.0-24.01.515.52.82.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.5-0.40.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value295000.0269000.0276000.0331000.0339000.0167000.0-407000.0-333000.0-313000.0
Percentage of IncomeTaxExpenseBenefit1.11.71.01.11.50.3-8.2-1.5-1.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12780129137109149599130
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.46.310.210.68.51.210.510.814.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value-322234-72125153257327146-201291151141186115125775112295-5192123102108889526424311331911131154354
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.018.2-5.79.711.82.18.13.015.7-2.514.913.713.81.511.114.516.010.86.716.012.3-6.811.915.713.314.611.613.23.86.06.016.04.412.815.917.16.58.4

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value124127138111159599129-4011010911579891161187910610512890107110106991029068168881827684776763
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.210.010.88.61.310.510.813.9-4.712.613.014.010.511.614.715.111.113.913.716.611.913.914.013.913.313.512.510.02.312.311.411.510.611.811.410.19.8

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12483127136108139599129
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.26.510.010.68.41.110.510.813.9

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2-32222000
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.2-0.20.20.20.20.20.00.00.0

us-gaap:StatementEquityComponents

iff:RedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value1-4211
Percentage of NetIncomeLossAttributableToNoncontrollingInterest76.3149.575.573.464.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.1-0.40.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax iff:RedeemableNoncontrollingInterest0.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value126891328712984133481321112889961546734681459845204618425240164097415441623721391136533507349434763400332133313324330832003249305930253013296529533008294628722644
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value126891328712984133481321112889961546734681459845204618425240164097415441623721391136533507349434763400332133313324330832003249305930253013296529533008294628722644
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5827621760556199614360324031174917731684175716741626162616931673163015901591162315671518163915981516146314351369130612481247122311971104119511841098999769
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.946.846.646.446.546.841.937.437.936.638.936.338.240.541.340.339.242.740.744.444.743.547.247.045.743.943.241.440.838.440.840.439.737.240.539.437.334.829.1

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-342-345-307-309-329-335-325-379
Percentage of StockholdersEquity-5.9-5.6-5.0-5.1-19.6-20.6-20.5-25.0
Percentage of Assets-2.7-2.6-2.3-2.4-7.2-8.4-8.7-10.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3244-107912
Percentage of StockholdersEquity0.10.00.10.1-0.60.50.60.8
Percentage of Assets0.00.00.00.0-0.20.20.30.4
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-1164-716-657-702-637-680-613-540
Percentage of StockholdersEquity-20.0-11.5-10.7-11.6-37.9-41.8-38.6-35.6
Percentage of Assets-9.2-5.4-5.0-5.4-13.9-16.9-16.5-15.5
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-825-373-573-368-354-396-297-352-297-173
Percentage of StockholdersEquity-14.2-6.0-9.5-5.9-5.8-6.6-17.7-21.6-18.7-11.4
Percentage of Assets-6.5-2.8-4.4-2.8-2.7-3.1-6.5-8.8-8.0-5.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value281829422898299029252941694620261970189618491993171116091857192918911455163817221755171017121644156916521633163315341572138813641345131713831439138713251128
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.222.122.322.422.122.872.243.442.141.240.943.240.240.145.346.445.439.141.947.150.048.949.348.347.349.649.149.448.048.445.445.144.644.446.847.847.146.142.7

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value43360649442648363452743223053683164913003234985395281812723774434784043262684053433653003249710476881071231111311141108980178151
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.44.63.83.23.74.954.96.96.58.07.010.67.18.112.213.012.74.97.010.312.713.711.69.68.112.210.311.19.410.03.23.52.53.03.64.13.84.60.00.00.03.00.00.0

Receivables Net Current

us-gaap:ReceivablesNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value9436094210461003937701723734663691665637550587621609537569566525493562583574524553541527499534516521472
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.40.57.37.87.67.37.315.515.714.415.314.415.013.714.315.014.614.514.615.515.014.116.217.217.315.716.716.416.515.417.517.117.315.9

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value107511231126116311141078719695687649619623604592585584600589589561536568556554552533520512515540547539555544534568559531444
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.58.58.78.78.48.47.514.914.714.113.713.514.214.714.314.114.415.815.115.415.316.316.016.316.616.015.715.516.116.617.917.818.418.418.118.919.018.516.8

Inventory Finished Goods

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value356319325325310277251285242215222213169142186183152146194201232141165148144148155156138142153149137158173147137136103
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.42.52.42.32.12.66.15.24.74.94.64.03.54.54.43.73.95.05.56.64.04.84.44.34.54.74.74.34.45.04.94.65.35.94.94.74.73.9

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value26322690261626312581249221242098213920902073202219751913187618501839181217791778171317661796181418051757157915451524153214951446146314321383139813721344
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.720.320.119.719.519.322.144.945.745.545.943.846.547.645.844.544.248.745.548.748.950.651.753.454.452.847.546.747.647.248.947.848.648.346.846.546.646.8

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value12931303130213151287125112501230125112101244121111831137113111131105107910701063102110461095111511091070922894879877875842851824819834821806
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.29.810.09.99.79.713.026.326.726.327.526.227.828.327.626.826.629.027.429.129.129.931.532.833.432.127.827.027.527.028.627.828.327.827.827.727.928.1

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value133913861313131612941241874867887880828811791775745737733732708714692720700698696687656651644654619604611608563564551538501
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.610.410.19.99.89.69.118.619.019.118.317.618.619.318.217.717.619.718.119.619.720.620.220.621.020.619.819.720.120.120.320.020.320.519.118.818.718.719.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementGeographical

iff:GuangzhouFlavorsPlant, country:CN



Period End2020-03-31
Value59
Percentage of PropertyPlantAndEquipmentNet4.4
Percentage of Assets0.5
Percentage of Assets iff:GuangzhouFlavorsPlant country:CN0.0

iff:GuangzhouFragrancePlant, country:CN



Period End2020-03-31
Value9
Percentage of PropertyPlantAndEquipmentNet0.7
Percentage of Assets0.1
Percentage of Assets iff:GuangzhouFragrancePlant country:CN0.0

iff:ZhejiangIngredientsPlant, country:CN



Period End2020-03-31
Value10
Percentage of PropertyPlantAndEquipmentNet0.7
Percentage of Assets0.1
Percentage of Assets iff:ZhejiangIngredientsPlant country:CN0.0

us-gaap:StatementGeographical

country:CN



Period End2020-03-312019-12-312018-12-312017-12-312016-12-31
Value199188178135117
Percentage of PropertyPlantAndEquipmentNet14.913.614.415.415.2
Percentage of Assets1.61.41.43.02.9
Percentage of Assets country:CN0.00.00.00.00.0

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312014-01-152013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5267549753815506543453781152114811661156115311451120100094194095194193275267567567567567610665665665665665665665665665665665665665665
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.541.441.441.341.141.712.024.624.925.125.524.826.424.923.022.622.925.323.820.619.319.319.419.920.40.020.020.020.120.820.521.822.022.122.422.522.122.623.225.2

us-gaap:Restatement, us-gaap:BusinessAcquisition

srt:RestatementAdjustment, iff:A2019Acquisitions



Period End2020-03-31
Value15
Percentage of Goodwill0.3
Percentage of Assets0.1
Percentage of Assets srt:RestatementAdjustment iff:A2019Acquisitions0.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26772851282929442974303938539141441542442639036528428830230632315674767880833032333536383941424445474854
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.121.521.822.122.523.64.08.48.89.09.49.29.29.16.97.07.38.28.34.32.12.22.32.42.50.91.01.01.11.11.21.31.41.41.51.51.61.72.1

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5866085615905832881671571551491069189127120119122119129132130129148150141140175169164159189190184179177178174171165
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.64.64.34.44.42.21.73.43.33.32.42.02.13.22.92.92.93.23.33.63.73.74.34.44.24.25.35.15.14.96.26.36.16.16.05.95.96.06.2

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value142615521412114911441128758699716768696861985898855688712742687523487518516468484560509566540622652507520564575628633660484
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.211.710.98.68.78.87.915.015.316.715.418.623.222.420.916.617.119.917.614.313.914.814.913.814.616.815.317.116.919.221.316.817.319.019.520.921.523.018.3

Debt Current

us-gaap:DebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value385384384848448456366725725825825713313313213388893200100100150226879211615421618513376
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.93.00.60.60.40.50.10.80.20.25.66.16.46.33.23.23.63.40.20.20.20.30.10.10.00.03.03.14.67.42.93.13.95.27.26.34.72.9

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value38538438484844845636647257365258257133133132133888932001001001502268792116154133
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.93.00.60.60.40.50.10.80.21.15.68.66.46.33.23.23.63.40.20.20.20.30.10.10.00.03.03.14.67.42.93.13.95.24.7

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value456510416463476471312315324338271265277274259255276302254241215229207195208226176176159199160169189208180166185200161
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.83.23.53.63.73.26.86.97.46.05.86.56.86.36.16.78.16.56.66.26.66.05.76.36.85.35.35.06.15.35.66.37.06.15.56.37.06.1

Accrued Income Taxes Current

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value418576419429414530257263250369248232248314228205217262199187183242194184193299214203214270172176168203161178198301207
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.34.33.23.23.14.12.75.65.38.05.55.05.87.85.65.05.27.15.15.15.27.05.65.45.89.06.56.16.78.35.65.85.66.95.55.96.710.57.9

Dividends Payable Current

us-gaap:DividendsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8080807777776654545454505050504444444438373737313131310272525252921212119
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.60.71.21.21.21.21.11.21.31.21.11.11.21.21.01.11.11.10.91.01.01.00.00.90.80.80.81.00.70.70.80.7

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value531854065390587357985635481922172185214020612077163414871543178818141384162815031447145313161329131513041375136713491374115612911291129311791191120912081388
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.940.741.544.043.943.750.147.546.746.645.645.038.437.037.743.043.637.241.641.141.341.637.939.139.639.141.441.342.242.337.842.742.943.639.939.641.142.152.5

Long Term Debt

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value394639974008442844214504433117171676163216251636118610661110135713699371057989935934933932931932933932915881676777777778757767786787934
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.130.130.933.233.534.945.036.735.835.536.035.427.926.627.132.732.925.227.027.126.726.726.927.428.028.028.128.228.627.122.125.725.826.225.625.526.727.435.3

Long Term Notes And Loans

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value261265217222225227218226226228241251250243244244243242354353353354218238238238297297297337315314315315223223222221240
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.01.71.71.71.82.34.84.85.05.35.45.96.16.05.95.96.59.19.710.110.16.37.07.27.29.09.09.310.410.310.410.510.67.67.47.67.79.1

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value121211101110665555544454434443433443333234432
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

us-gaap:StatementEquityComponents

iff:RedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value10299114115114810
Percentage of MinorityInterest800.9808.91025.61089.21018.1784.90.0
Percentage of Assets0.80.70.90.90.90.60.0
Percentage of Assets iff:RedeemableNoncontrollingInterest0.00.00.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value494502530514492217235238245242156151158137147144157160171115113118116110105921029492110118153151151150150149147157
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.93.84.13.93.71.72.45.15.25.33.53.33.73.43.63.53.84.34.43.23.23.43.43.33.22.83.12.92.93.43.95.15.05.15.15.05.15.16.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5827621760556199614360324031174917731684175716741626162616931673163015901591162315671518163915981516146314351369130612481247122311971104119511841098999769
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.946.846.646.446.546.841.937.437.936.638.936.338.240.541.340.339.242.740.744.444.743.547.247.045.743.943.241.440.838.440.840.439.737.240.539.437.334.829.1

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-342-345-307-309-329-335-325-379
Percentage of StockholdersEquity-5.9-5.6-5.0-5.1-19.6-20.6-20.5-25.0
Percentage of Assets-2.7-2.6-2.3-2.4-7.2-8.4-8.7-10.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3244-107912
Percentage of StockholdersEquity0.10.00.10.1-0.60.50.60.8
Percentage of Assets0.00.00.00.0-0.20.20.30.4
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-1164-716-657-702-637-680-613-540
Percentage of StockholdersEquity-20.0-11.5-10.7-11.6-37.9-41.8-38.6-35.6
Percentage of Assets-9.2-5.4-5.0-5.4-13.9-16.9-16.5-15.5
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-825-373-573-368-354-396-297-352-297-173
Percentage of StockholdersEquity-14.2-6.0-9.5-5.9-5.8-6.6-17.7-21.6-18.7-11.4
Percentage of Assets-6.5-2.8-4.4-2.8-2.7-3.1-6.5-8.8-8.0-5.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value161616161616161414141414141414141414141414141414141414141414141414141414141414
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.20.30.30.30.30.30.30.40.40.30.30.40.40.40.40.40.40.40.40.40.40.40.50.40.50.50.50.50.50.50.50.50.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value416241174114406940113956402139923947387039653909385038183789375036783604356935083441335032983229315030753045297829042841280028122748269226932636258225192339
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.831.031.730.530.430.741.885.484.384.287.784.690.695.192.590.388.496.991.396.098.195.994.995.094.992.391.690.090.787.491.593.091.290.891.287.687.687.788.4

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value102110221023102310291030173117321735172617211721171316791644162315981555151714761450144614101393138313651346133813391330133313351352135613571359137713831424
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.17.77.97.77.88.018.037.137.137.538.137.340.341.840.139.138.441.838.840.441.441.440.641.041.641.040.540.541.840.943.644.144.945.746.045.246.748.253.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value-1164-716-867-668-657-702-715-692-620-637-656-676-681-680-611-608-606-613-611-556-573-540-399-383-397-392-403-412-398-403-361-388-342-375-280-230-245-275-265-303-270
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-9.2-5.4-6.7-5.0-5.0-5.4-7.4-14.8-13.3-13.9-14.5-14.6-16.0-16.9-14.9-14.6-14.6-16.5-15.6-15.2-16.3-15.5-11.5-11.3-12.0-11.8-12.1-12.5-12.4-12.4-11.8-12.8-11.4-12.7-9.5-7.7-8.3-9.60.00.0-10.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value163151981374723514666-1119114136212061741223113812813431200163119349918180752-3432
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.324.615.610.73.619.316.27.2-1.222.416.24.32.627.022.515.54.019.416.817.64.126.621.115.14.513.12.626.61.17.4-4.95.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-42-68-11-55-90-4910-32-34-35-36-31-69-162-289-25-19-21-31-331-197-17-40-37-21-122-14-28-31-30-27-19-14
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2-5.3-0.9-4.3-7.0-402.9-3.6-3.7-3.8-4.3-3.6-8.3-19.6-37.9-3.3-2.4-2.7-4.3-43.3-25.7-2.3-5.4-4.8-2.7-15.9-1.9-3.9-4.6-4.3-3.9-2.7-2.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-107-139-131-122-112494845-9-14-100-286229113-85-187-86339-198113-7-39-74-38-40-49-15-117711-3834-7
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.0-10.8-10.4-9.5-8.64.1533.9-1.1-1.6-11.7-32.827.313.7-11.2-24.1-10.943.3-27.714.9-1.0-5.1-9.8-5.0-5.1-6.4-2.0-1.611.41.7-5.54.8-1.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value163151981374723514666-1119114136212061741223113812813431200163119349918180752-3432
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.324.615.610.73.619.316.27.2-1.222.416.24.32.627.022.515.54.019.416.817.64.126.621.115.14.513.12.626.61.17.4-4.95.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value124127138111159599129-4011010911579891161187910610512890107110106991029068168881827684776763
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.210.010.88.61.310.510.813.9-4.712.613.014.010.511.614.715.111.113.913.716.611.913.914.013.913.313.512.510.02.312.311.411.510.611.811.410.19.8

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12780129137109149599130
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.46.310.210.68.51.210.510.814.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value8087807381773131333229292627252326242421192019262220192019191720
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value0-221246242424373025-1040-15-710-352123-131823-203-18-8-10116
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-42-68-11-55-90-4910-32-34-35-36-31-69-162-289-25-19-21-31-331-197-17-40-37-21-122-14-28-31-30-27-19-14
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2-5.3-0.9-4.3-7.0-402.9-3.6-3.7-3.8-4.3-3.6-8.3-19.6-37.9-3.3-2.4-2.7-4.3-43.3-25.7-2.3-5.4-4.8-2.7-15.9-1.9-3.9-4.6-4.3-3.9-2.7-2.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value4875416157673534335131192656262022342818194537263330294130281912
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-107-139-131-122-112494845-9-14-100-286229113-85-187-86339-198113-7-39-74-38-40-49-15-117711-3834-7
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.0-10.8-10.4-9.5-8.64.1533.9-1.1-1.6-11.7-32.827.313.7-11.2-24.1-10.943.3-27.714.9-1.0-5.1-9.8-5.0-5.1-6.4-2.0-1.611.41.7-5.54.8-1.1

Proceeds From Issuance Of Long Term Debt

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312015-09-302014-12-312014-09-30
Value1154531136872880000-30000
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments For Repurchase Of Common Stock

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312015-09-302014-12-312014-09-30
Value1154531136872880000-30000
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

iff:TermLoanCreditAgreement, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.03650.03650.03650.03650.0364850.036485
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations iff:TermLoanCreditAgreement us-gaap:LoansPayable0.00.00.00.00.00.0

us-gaap:LongtermDebtType

iff:AmortizingNote



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.06090.06090.06090.06090.06090.0581
Percentage of DebtInstrumentInterestRateStatedPercentage166.8166.8166.8166.8166.9159.2
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations iff:AmortizingNote0.00.00.00.00.00.0

iff:SeniorNotesDueTwoThousandandTwenty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.03690.03690.03690.03690.03690.03690.0373
Percentage of DebtInstrumentInterestRateStatedPercentage101.1101.1101.1101.1101.1101.10.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations iff:SeniorNotesDueTwoThousandandTwenty0.00.00.00.00.00.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-25
Value0.00820.00820.00820.00820.00820.00820.00780.005
Percentage of DebtInstrumentInterestRateStatedPercentage22.522.522.522.522.522.50.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne0.00.00.00.00.00.00.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentySix



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-25
Value0.01930.01930.01930.01930.01930.01930.01930.018
Percentage of DebtInstrumentInterestRateStatedPercentage52.952.952.952.952.952.90.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations iff:SeniorNotesEuroNotesDueTwoThousandTwentySix0.00.00.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:TaxCreditCarryforward

us-gaap:EffectiveIncomeTaxRateContinuingOperations

iff:SpanishIncomeTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.1710.1720.1810.1740.050.1870.1850.220.2270.1640.2080.2320.2340.2550.2310.180.2450.2460.2530.2610.2730.2890.8660.2770.265
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value8881077677677555754575359494442396555
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-12-29
Value2872872993083000308
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value4486235044544976485274322305368323181
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value0-10-22-113286230-25-759704-13-1241360000601-283013034-16515
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

iff:DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime

srt:Maximum, iff:SeniorUnsecuredTermLoanFacilities, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent



Period End2020-01-17
Value4.5
Percentage of DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime100.0

srt:Maximum, iff:ThreeHundredSixtyFourDaySeniorUnsecuredBridgeFacility, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent



Period End2020-01-17
Value4.5
Percentage of DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime100.0

srt:Minimum, iff:SeniorUnsecuredTermLoanFacilities, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent



Period End2020-01-17
Value3.5
Percentage of DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime77.8

srt:Minimum, iff:ThreeHundredSixtyFourDaySeniorUnsecuredBridgeFacility, us-gaap:UnsecuredDebt, us-gaap:SubsequentEvent



Period End2020-01-17
Value3.5
Percentage of DebtInstrumentCovenantComplianceRatioOfNetDebtToEBITDAWithStepDownsOverTime77.8

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

iff:DefinedBenefitPlanAmortizationAndDeferralsNet

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value111111
Percentage of DefinedBenefitPlanAmortizationAndDeferralsNet100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3222222221433333
Percentage of DefinedBenefitPlanAmortizationAndDeferralsNet206.4176.4229.00.0229.2148.2191.90.00.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1
Percentage of DefinedBenefitPlanAmortizationAndDeferralsNet-62.1-81.6-93.70.0-93.6-99.2-76.80.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

iff:FDAMandatedProductRecall

us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0-7-30-49057030000
Percentage of FDAMandatedProductRecall100.0100.0100.00.0100.0100.00.0100.0100.00.0100.00.00.00.00.0

iff:FinanceLeaseCost



Period End2020-03-312019-03-31
Value753000.00.0
Percentage of FinanceLeaseCost100.00.0

iff:IncreaseInRedemptionValueRedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-53-1002000
Percentage of IncreaseInRedemptionValueRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.00.00.00.0

iff:NetIncomeLossAvailableToCommonStockholdersAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13079128135109109599129
Percentage of NetIncomeLossAvailableToCommonStockholdersAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

iff:NoncontrollingInterestImpactOfForeignExchangeTranslation

iff:RedeemableNoncontrollingInterest



Period End2020-03-312019-03-31
Value-190
Percentage of NoncontrollingInterestImpactOfForeignExchangeTranslation100.0100.0

us-gaap:StatementBusinessSegments

iff:OperationalImprovementInitiativeCosts

us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.0615000.0712000.0534000.0406000.0218000.0958000.0993000.00.0329000.0407000.0445000.0621000.0501000.0802000.0831000.0268000.0274000.0279000.0
Percentage of OperationalImprovementInitiativeCosts0.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

iff:ProceedsFromSaleOfAccountsReceivable

iff:TradeAccountsReceivableWithFactoringAgreements



Period End2020-03-312019-03-31
Value-55
Percentage of ProceedsFromSaleOfAccountsReceivable100.0100.0

iff:ProceedsFromTerminationOfLifeInsuranceContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value100010100100000000051200
Percentage of ProceedsFromTerminationOfLifeInsuranceContracts100.00.00.00.0100.00.0100.00.00.0100.00.00.0100.00.0100.0100.00.00.00.0100.0100.00.0100.0

us-gaap:RestructuringPlan

iff:RestructuringAndRelatedCostNumberOfSitesClosed

iff:FrutaromIntegrationInitiative



Period End2020-03-31
Value4.0
Percentage of RestructuringAndRelatedCostNumberOfSitesClosed100.0

us-gaap:StatementGeographical, us-gaap:RestructuringPlan

srt:LatinAmerica, iff:FrutaromIntegrationInitiative



Period End2020-03-31
Value1.0
Percentage of RestructuringAndRelatedCostNumberOfSitesClosed25.0

srt:NorthAmerica, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-312019-09-30
Value1.00.00.0
Percentage of RestructuringAndRelatedCostNumberOfSitesClosed25.00.00.0

us-gaap:EMEA, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-312019-09-30
Value2.0-2.04.0
Percentage of RestructuringAndRelatedCostNumberOfSitesClosed50.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value79812878777887479666874610551055483396
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

iff:EquityBasedAwards



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value888107767767755575457535944944
Percentage of AllocatedShareBasedCompensationExpense108.086.199.583.891.292.881.696.998.080.483.984.576.8105.975.681.990.977.187.591.873.972.692.586.079.083.094.175.784.0

iff:LiabilityBasedAwards



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value01020010011110110100110110010
Percentage of AllocatedShareBasedCompensationExpense-8.013.90.516.28.87.218.43.12.019.616.115.523.2-5.924.418.19.122.912.58.226.127.47.514.021.017.05.924.316.0

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value667106566696654564445534744743362264
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value484948474748999108877556453111211111111111
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationAcquisitionRelatedCosts

iff:NutritionBiosciencesInc, us-gaap:CorporateAndOther



Period End2020-03-312019-03-31
Value50
Percentage of BusinessCombinationAcquisitionRelatedCosts100.00.0

us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationIntegrationRelatedCosts

iff:FrutaromIndustriesLtd., us-gaap:CorporateAndOther



Period End2020-03-312019-03-31
Value314
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0

iff:NutritionBiosciencesInc, us-gaap:CorporateAndOther



Period End2020-03-312019-03-31
Value100
Percentage of BusinessCombinationIntegrationRelatedCosts277.90.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1923-241415001824085
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-17511949-42-151-46254952
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value0.750.750.750.730.730.730.730.690.690.69000000000000020.690.640.640.63999999999999990.640.560.560.560.560.470.470.470.470.390.390.390.340.340.34000000000000010.340.310.310.310.270.270.270.250.25
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:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value2-24-7-14-12-16-41862-45-36-81240-431315-218-712-20-1617-5
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value37452544334
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value10001
Percentage of DefinedBenefitPlanContributionsByEmployer25.67.18.512.540.7

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value766677
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value11101010101412121212121212101111
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets164.0154.3156.20.0156.2185.9155.50.00.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value455554
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3444444444433566
Percentage of DefinedBenefitPlanInterestCost76.179.981.30.081.393.490.60.00.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value474000.0531000.0578000.0578000.0578000.0498000.0654000.0654000.0654000.0946000.0588000.0588000.0966000.0787000.0787000.0
Percentage of DefinedBenefitPlanInterestCost11.19.510.60.010.69.913.70.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value-562000.0210000.0220000.0219000.0-624000.0-805000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value11111-1000-1111211
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-250.0704.3602.70.0605.5248.431.30.00.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value00000-1000000000
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost95.4-323.8-213.20.0-213.7202.642.10.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value400000.0-44000.0474000.0474000.0183000.0596000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5444454440555333
Percentage of DefinedBenefitPlanServiceCost1485.0-10681.81028.10.01028.12911.5750.00.00.00.00.00.00.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value143000.0124000.0148000.0148000.0148000.0168000.0196000.0196000.0195000.055000.0221000.0221000.0208000.0214000.0214000.0
Percentage of DefinedBenefitPlanServiceCost35.8-281.831.20.031.291.832.90.00.00.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:ForeignExchangeContract, us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-77-4-30-784-3
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value111220-3-2-2011000224630-1-100-1010100-1-2-100
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:ForwardContracts, us-gaap:CashFlowHedging, us-gaap:CostOfSales



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value21221-2-2
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet111.7112.6110.3110.0-59.291.591.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:InterestExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value216000.0-212000.0-648000.0216000.0-216000.0-216000.0-216000.0-216000.0-216000.0-216000.0-186000.0-188000.0-167000.0-171000.0-171000.0-86000.0-67000.0-69000.0-69000.0-69000.0-67000.0-69000.0-68000.0-69000.0-69000.0-68000.00.00.0
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet11.7-12.4-30.810.0-22.77.08.59.064.5-13.5-11.6-69.667.123.9-6.7-3.4-1.4-1.0-2.0-7.26.45.38.68.45.620.20.00.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value808080777777665454
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value808080777777665454
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-4211-5-130-7-5-1-20-42-6-2-6-20-163-8-12-900-3-203100
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value121212111-1222022121221131131112112222
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-100-8-100-5-300-8-3003100380050401010
Percentage of ExcessTaxBenefitFromShareBasedCompensationFinancingActivities100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability



Period End2020-03-312019-03-31
Value33000.00.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.00.0

us-gaap:FinanceLeasePrincipalPayments



Period End2020-03-312019-03-31
Value721000.00.0
Percentage of FinanceLeasePrincipalPayments100.00.0

us-gaap:GainLossOnDispositionOfAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value0-100001-10000070020000100016120000
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0-100001-1000007002
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0-1000100000004002
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0158.60.0-0.00.0100.0100.0100.0100.061.5100.0100.0100.0

us-gaap:GoodwillPeriodIncreaseDecrease



Period End2020-03-31
Value-15
Percentage of GoodwillPeriodIncreaseDecrease100.0

us-gaap:ReportingUnit

iff:CosmeticActivesIngredients



Period End2020-03-31
Value110
Percentage of GoodwillPeriodIncreaseDecrease-724.9

iff:FF



Period End2020-03-31
Value-29
Percentage of GoodwillPeriodIncreaseDecrease191.2

iff:NPS



Period End2020-03-31
Value-78
Percentage of GoodwillPeriodIncreaseDecrease516.6

iff:Taste



Period End2020-03-31
Value-2
Percentage of GoodwillPeriodIncreaseDecrease17.2

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1539615616913466100121158115141142138103113152154102142136156117142146142133140127881211221101121041151069389
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value3227244033292832243026302027272823312525202917261850212013472012
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-3194-31-16872-101-8492-21-12100-29342631-31523-18-1119-29322-22-93-13
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value133-82-643155-43-63861-26171660-14-34960-16162962-45-28412634-338415529
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-09-302011-03-31
Value-19-187-3681411-36161511-23959-11-376-271497-6220-431912-62-55
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-09-302011-03-31
Value-651700-11-5-1029-1813124-71811810-514020-2316-13120-60-1223-10-18
Percentage of IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value-42828209-42-4392671411-29-783-2-7617-7081-425-3-10-1-8-94
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value10-36-743-64-110-160-4-14-201018-7-19-759131444-13-15-1235-82
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

iff:EmployeeStockOptionAndRestrictedStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value349000.0-16000.0332000.0424000.0362000.010000.0267000.0238000.0375000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0

iff:StockPurchaseContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value101010000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements333.2-1106.2350.3106.6321.32280.043.80.00.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value41115121482517
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:MinorityInterestChangeInRedemptionValue

iff:RedeemableNoncontrollingInterest



Period End2020-03-312019-03-31
Value-50
Percentage of MinorityInterestChangeInRedemptionValue100.0100.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders



Period End2020-03-312019-12-312019-09-302019-06-30
Value0001
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-30
Value0001
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders94.9100.467.169.2

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-30
Value2000.0-2000.047000.0588000.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders5.1-0.432.930.8

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-53-100
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-53-100
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value125851271091495
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value010010
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest0.51.80.50.89.5-0.2

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value124831271081395
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest99.598.299.599.290.5100.2

us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-450009000
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0100.0100.00.00.0100.0100.0100.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3-4422307-2
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.09.32598.30.00.038.664300.04252.20.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-448150-200-114411-28-7711
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-328.5-111744.70.00.0122.62823100.0-41488.70.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-452200-204-1442-1-27-8514
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-437.9-114443.00.00.0-16.12758700.0-45840.90.0

us-gaap:OperatingLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value12121312
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-03-312019-03-31
Value1211
Percentage of OperatingLeasePayments100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1200221000-4-11-1700-103-12-5128510-1-20-2-330450
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value120022100
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000000010
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value-447-199-1144-22-7116195-1-3-16-5517-32-1513-48-14526-4532-5015
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value32222333222555344555
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.85.8-11.3-4.015.619.770.0-264.7-77.5-196.639.7-9.932.1-16.9-25.732.4-95.557.1-36.098.1

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value102100-4-11-100-10-12-512510-1-20
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.3-0.2-10.7-14.5-3.1-20.5-223.4127.5-8.0-61.0-158.322.6-35.0-36.7-37.511.8-10.1-20.715.4-2.4

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-03-31
Value-44744
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value-45242-27-85141913-3-6-414-4817-50-257-95-170
Percentage of OtherComprehensiveIncomeLossNetOfTax101.194.4122.0118.687.6100.9253.4237.2185.5357.6218.687.3102.9153.6163.255.8205.663.6120.64.3

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-343-2-2-2-11-2-2-25-3-3-318-2-2-2-37-5-5-5107-3-4-4-5-5-554-4-4-482-2-5
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-343-2-2-2-11-2-2-2
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1-10110-4041
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value53-6073-212447-339
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

iff:CrossCurrencySwaps, us-gaap:NetInvestmentHedging



Period End2020-03-312019-03-31
Value2110
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax40.044.4

iff:ForeignCurrencyContracts, us-gaap:CashFlowHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value12-20210
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax2.33.311.7-1.3-55.526.0

iff:SeniorNotesEuroNoteDueTwoThousandTwentyFour, us-gaap:NetInvestmentHedging



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value916-44-728
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax17.922.522.317.5178.673.0

iff:SeniorNotesMaturing2021through2026, us-gaap:NetInvestmentHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value21-2236-1092900
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax39.437.649.549.038.562.7-17.70.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value216000.0213000.0216000.0216000.0216000.0216000.0216000.0216000.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax0.4-0.40.3-1.00.90.5-5.40.5

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:OtherRestructuringCosts

us-gaap:EmployeeSeverance, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value605
Percentage of OtherRestructuringCosts100.0100.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value200000.0200000.0200000.0100000.0100000.0200000.0300000.0200000.0200000.0300000.0200000.0300000.0600000.0500000.0500000.0600000.0600000.0700000.0700000.0
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0201740000
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities100.0100.00.0100.0100.00.00.00.00.0

us-gaap:PaymentForContingentConsiderationLiabilityInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0000400
Percentage of PaymentForContingentConsiderationLiabilityInvestingActivities0.00.00.00.0100.00.00.0

us-gaap:PaymentsForRepurchaseOfRedeemableNoncontrollingInterest



Period End2020-03-312019-03-31
Value140
Percentage of PaymentsForRepurchaseOfRedeemableNoncontrollingInterest100.00.0

us-gaap:PaymentsForRestructuring



Period End2020-03-312019-12-31
Value22
Percentage of PaymentsForRestructuring100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, iff:A2017ProductivityProgram



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-31
Value000000141442
Percentage of PaymentsForRestructuring6.910.10.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeSeverance, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value12220
Percentage of PaymentsForRestructuring49.474.70.00.00.0

us-gaap:EmployeeSeverance, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value928000.0-213000.0
Percentage of PaymentsForRestructuring43.8-7.8

us-gaap:OtherRestructuring, iff:A2017ProductivityProgram



Period End2020-03-312019-12-31
Value0.0987000.0
Percentage of PaymentsForRestructuring0.036.0

us-gaap:OtherRestructuring, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-31
Value0.0-365000.0
Percentage of PaymentsForRestructuring0.0-13.3

us-gaap:OtherRestructuring, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value-1000.08000.0
Percentage of PaymentsForRestructuring-0.00.3

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value808077777766545454545050505044444444373737383131312705525252119
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value000153348570001053138236000030418800001020000
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.00.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.00.00.00.0100.0100.00.00.00.00.0

us-gaap:PensionContributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value57563665425625143276335492445
Percentage of PensionContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

us-gaap:PensionExpense

us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00-2-196214120
Percentage of PensionExpense100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

us-gaap:ProceedsFromIncomeTaxRefunds

us-gaap:ForeignCountry, country:BR



Period End2020-03-312019-12-31
Value38
Percentage of ProceedsFromIncomeTaxRefunds100.0100.0

us-gaap:StatementGeographical, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName

country:BR, us-gaap:ForeignCountry, country:BR



Period End2020-03-31
Value2
Percentage of ProceedsFromIncomeTaxRefunds62.9

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value00000000000000000000000001112137
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions0.0100.00.00.0100.00.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-312010-03-31
Value37920370001400030210101000216010000
Percentage of ProceedsFromSaleOfProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-03-31
Value4
Percentage of ProvisionForDoubtfulAccounts100.0

us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent

iff:Pandemic



Period End2020-03-31
Value3
Percentage of ProvisionForDoubtfulAccounts63.1

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-411022111
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-5-4-90-5-5-5-5
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax4.4-304.2-280.7-1931.55.9-219.0-288.0-288.1-288.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3-1-2-2-2-2-2-2-2
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111220-3-2-2
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-52.7-86.7-67.3-81.2-83.1-44.3119.794.291.6

us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3-1-2-2-2-2-2-2-2
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value111220-3-2-2
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-52.7-86.7-67.3-81.2-83.1-44.3119.794.291.6

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-10000-1-5-5-5
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent47.313.332.718.816.955.7219.7194.2191.6

us-gaap:RestructuringCharges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value473216201053010-100070005000020001030214
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-312019-09-30
Value1526
Percentage of RestructuringCharges311.138.1164.2

us-gaap:StatementBusinessSegments

iff:Scent



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value0001020
Percentage of RestructuringCharges0.00.921.667.4100.0100.0

iff:SharedITCorporateCosts



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value040200
Percentage of RestructuringCharges0.061.710.016.80.00.0

iff:Taste



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value400200
Percentage of RestructuringCharges100.00.02.415.80.00.0

us-gaap:CorporateAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value473216200153010000070
Percentage of RestructuringCharges100.0100.0100.0100.0100.0102.837.134.0143.1100.0100.0100.0100.014.50.00.00.0100.00.0

us-gaap:RestructuringReserveAccrualAdjustment1



Period End2020-03-312019-12-31
Value47
Percentage of RestructuringReserveAccrualAdjustment1100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

iff:FixedAssetWriteDown, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value30
Percentage of RestructuringReserveAccrualAdjustment168.4-8.8

us-gaap:EmployeeSeverance, iff:A2017ProductivityProgram



Period End2020-03-312019-12-31
Value0-1
Percentage of RestructuringReserveAccrualAdjustment10.0-26.5

us-gaap:EmployeeSeverance, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-31
Value06
Percentage of RestructuringReserveAccrualAdjustment10.087.6

us-gaap:EmployeeSeverance, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value12
Percentage of RestructuringReserveAccrualAdjustment138.031.8

us-gaap:OtherRestructuring, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-31
Value0.0106000.0
Percentage of RestructuringReserveAccrualAdjustment10.01.4

us-gaap:OtherRestructuring, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value01
Percentage of RestructuringReserveAccrualAdjustment1-6.414.4

us-gaap:RestructuringReserveSettledWithoutCash2



Period End2020-03-312019-12-31
Value30
Percentage of RestructuringReserveSettledWithoutCash2100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

iff:FixedAssetWriteDown, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value30
Percentage of RestructuringReserveSettledWithoutCash2100.0128.8

us-gaap:OtherRestructuring, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-31
Value0.0145000.0
Percentage of RestructuringReserveSettledWithoutCash20.0-28.8

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability



Period End2020-03-312019-03-31
Value10
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-03-312019-03-31
Value109
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11195.011245.01410.0127695.013401.0-76.03213.0130633.030294.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13763.0132.0212.024.013978.0456.00.030340.015678.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-110-2-1000-2
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-110-8-200-6-3
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures141.168.729.5334.9135.4100.4384.9801.4162.6

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000600061
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-41.131.370.5-234.9-35.4-0.4-284.9-701.4-62.6

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8881077677
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8881077677
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value010140110
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value010130100
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised-269.299.598.599.983.897.999.919.6-44.3

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000000010
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised369.20.51.50.116.22.10.180.4144.3

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

iff:GainContingencyExpectedRelocationPayments

iff:ZhejiangIngredientsPlant



Period End2020-03-312017-12-31
Value1550
Percentage of GainContingencyExpectedRelocationPayments100.0100.0

us-gaap:AccountsReceivableNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-31
Value96188495110551012946737747677
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

iff:TradeAccountsReceivableWithFactoringAgreements



Period End2020-03-312019-12-312018-12-312017-12-31
Value200205168160
Percentage of AccountsReceivableNet20.823.317.823.6

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3835382338163805380237932441167166162155148155152146140143140136133135140136131131131126127125127126119129128125123125123110
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable



Period End2020-03-312019-12-31
Value1816
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0

us-gaap:Restatement, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

srt:RestatementAdjustment, iff:A2019Acquisitions



Period End2020-03-31
Value-5
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value433606494426483634368316491300323498539528181272377443478404326268405343324
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value433606494426483634368316491300323498539528181272377443478404326268405343324
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValueOfLifeInsurance



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4347464645434543414256515654
Percentage of CashSurrenderValueOfLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1231201134
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCurrent



Period End2020-03-312019-12-312018-12-31
Value11111
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value43324382439245124505455316391325
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value61664163470765865551
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value961257697828999
Percentage of DeferredIncomeTaxesAndOtherTaxReceivableCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value8985858379757044114336766
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

country:US, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-30
Value44
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-31
Value20191919
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear475.0459.50.00.0

us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeAssets

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value32300000
Percentage of DerivativeAssets100.0100.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value32311142175
Percentage of DerivativeAssets100.0100.00.00.00.00.00.0

us-gaap:DerivativeFairValueOfDerivativeAsset



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value3211142171586218208111317522132105783495154
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CurrencySwap



Period End2020-03-312019-09-302019-06-302019-03-312018-12-31
Value27512161
Percentage of DerivativeFairValueOfDerivativeAsset84.149.685.176.915.0

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5352465211021
Percentage of DerivativeFairValueOfDerivativeAsset15.90.050.414.923.185.00.098.589.596.9

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value214134113616
Percentage of DerivativeFairValueOfDerivativeAsset8.50.037.412.218.457.00.063.057.276.6

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2210123734
Percentage of DerivativeFairValueOfDerivativeAsset7.40.013.02.74.727.90.035.432.320.3

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312018-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2710024314220100100000000
Percentage of DerivativeFairValueOfDerivativeAsset84.215.24.41.526.021.141.310.533.312.55.13.157.29.76.621.60.32.09.39.74.17.91.92.4

us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value30101320510614485711143417211134127393
Percentage of DerivativeFairValueOfDerivativeAsset92.687.097.395.372.17.610.391.264.652.940.862.767.783.884.566.279.798.234.812.330.848.759.328.456.172.257.263.767.5

us-gaap:Nondesignated



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value21012148074123322174018333222251
Percentage of DerivativeFairValueOfDerivativeAsset7.413.02.74.727.992.489.78.835.447.159.237.332.316.215.533.820.31.865.287.769.251.340.771.643.927.842.836.332.5

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value53163612251
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:DesignatedAsHedgingInstrument



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0000007020
Percentage of DerivativeFairValueOfDerivativeLiability0.024.710.48.02.83.064.42.041.10.6

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5215364231
Percentage of DerivativeFairValueOfDerivativeLiability100.075.389.692.097.297.035.698.058.999.4

us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeLiabilities

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value5700000
Percentage of DerivativeLiabilities100.0100.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value57163613
Percentage of DerivativeLiabilities100.0100.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

us-gaap:ForwardContracts



Period End2020-03-312019-12-312018-12-31
Value242473585
Percentage of DerivativeNotionalAmount100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value87102111939112175595188745343645949394855474171665246105845537806143364247444095
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value535489426380339291244234227217206197187180173168163157152146143142140138135134133131130128127125124122121119116
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value348302265229193156122116111104999387827774706656
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization65.061.862.260.256.953.849.949.649.148.248.147.346.645.844.844.043.042.239.6

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value19241011182221191920191817171616161514
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization3.75.02.53.05.47.78.78.48.79.49.59.69.59.59.79.710.09.710.2

us-gaap:TechnologyBasedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1371351251151069383817976737169686766656562
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization25.627.729.330.531.331.934.234.735.135.335.536.237.137.938.739.640.441.544.1

us-gaap:TrademarksAndTradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value3027252321191716161514131212111110108
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization5.75.65.96.36.46.77.27.27.17.07.06.96.86.86.86.76.76.56.1

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value321333413256332533133331630626641633630623577545458457465463475303218218218218219165165165165165165165165165165165165
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value25612653258426502638265840540241440741440739637129028928829382
Percentage of FiniteLivedIntangibleAssetsGross79.779.479.479.779.679.864.364.264.664.465.665.468.568.063.463.462.163.437.6

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value22403626334324242424242424242424252217
Percentage of FiniteLivedIntangibleAssetsGross0.71.21.10.81.01.33.93.93.93.93.94.04.24.55.35.35.54.97.9

us-gaap:TechnologyBasedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value455468462470463451161161162161153153125119111111111112107
Percentage of FiniteLivedIntangibleAssetsGross14.214.014.214.114.013.525.725.825.325.624.324.621.621.924.424.524.024.349.2

us-gaap:TrademarksAndTradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value17417817317717717738383938383732303131383411
Percentage of FiniteLivedIntangibleAssetsGross5.45.45.35.35.45.36.16.16.26.16.16.15.65.66.96.98.47.45.2

us-gaap:InventoryFinishedGoodsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-09-302011-06-302011-03-312010-12-31
Value474513503493476460320318318306300296279289289291291289285274257275274279285274271276275274263255
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-09-302011-06-302011-03-312010-12-31
Value553565570615586568372353346326303309306288279273292282284268258275264257250252239256250284286270
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-09-302011-06-302011-03-312010-12-31
Value484452545248262322161517181316191517191919171717166979896
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:LoansPayableFairValueDisclosure

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value23448411111530793811513131514142262681412124200297
Percentage of LoansPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value23448411111530793811513131514142262681412124200297
Percentage of LoansPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

us-gaap:LossContingencyEstimateOfPossibleLoss

srt:Maximum



Period End2020-03-312019-12-312019-09-302019-06-30
Value10102510
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value69565254484933
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongtermDebtType

us-gaap:OtherLongTermDebtNoncurrent

iff:DeferredRealizedGainsOnInterestRateSwaps



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value000000000000011223344556677889991010111112
Percentage of OtherLongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value10299114115114810
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.00.0

us-gaap:RestrictedCashCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value91792813130
Percentage of RestrictedCashCurrent100.0100.0100.0100.0100.0100.00.0

us-gaap:RestrictedCashNoncurrent



Period End2020-03-312019-12-312019-03-312018-12-31
Value5000
Percentage of RestrictedCashNoncurrent100.00.00.00.0

us-gaap:RestructuringReserve



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value20211557370222313469101131814
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:EmployeeSeverance, iff:A2017ProductivityProgram



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-31
Value013470
Percentage of RestructuringReserve4.75.220.879.394.70.0

us-gaap:EmployeeSeverance, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value111280
Percentage of RestructuringReserve57.861.253.20.0

us-gaap:EmployeeSeverance, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-312019-09-302018-12-31
Value4410
Percentage of RestructuringReserve24.319.29.30.0

us-gaap:OtherRestructuring, iff:A2017ProductivityProgram



Period End2020-03-312019-12-312019-09-302018-12-312017-12-312016-12-31
Value001100
Percentage of RestructuringReserve0.40.46.720.75.30.0

us-gaap:OtherRestructuring, iff:A2019SeveranceInitiatives



Period End2020-03-312019-12-312019-09-302018-12-31
Value471000.0471000.00.00.0
Percentage of RestructuringReserve2.32.20.00.0

us-gaap:OtherRestructuring, iff:FrutaromIntegrationInitiative



Period End2020-03-312019-12-312019-09-302018-12-31
Value2210
Percentage of RestructuringReserve10.611.89.90.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:SeniorLongTermNotes

iff:TermLoanCreditAgreement, us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2392392823243243490
Percentage of SeniorLongTermNotes100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementBasis

iff:AmortizingNote, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7082931031141250
Percentage of SeniorLongTermNotes29.634.333.032.135.435.80.0

iff:AmortizingNote, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7184951061171270
Percentage of SeniorLongTermNotes30.035.234.032.936.336.60.0

iff:SeniorNotesDueTwoThousandFortyEight, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-262017-12-31
Value7867857857857857858008000
Percentage of SeniorLongTermNotes328.0328.0278.2242.3242.3225.00.00.00.0

iff:SeniorNotesDueTwoThousandFortyEight, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8239199078878287837990
Percentage of SeniorLongTermNotes343.6383.5321.1273.6255.5224.50.00.0

iff:SeniorNotesDueTwoThousandFortySeven, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value493493493493493493492
Percentage of SeniorLongTermNotes206.0206.0174.7152.1152.1141.20.0

iff:SeniorNotesDueTwoThousandFortySeven, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value446526515505472446525
Percentage of SeniorLongTermNotes186.3219.6182.6156.0145.8127.90.0

iff:SeniorNotesDueTwoThousandTwentyEight, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-262017-12-31
Value3963963963963963964004000
Percentage of SeniorLongTermNotes165.6165.5140.4122.2122.3113.50.00.00.0

iff:SeniorNotesDueTwoThousandTwentyEight, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4184414424354144014010
Percentage of SeniorLongTermNotes174.5184.2156.5134.2127.9114.90.00.0

iff:SeniorNotesDueTwoThousandTwentyThree, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value299299298298298298298
Percentage of SeniorLongTermNotes124.8124.8105.892.192.185.50.0

iff:SeniorNotesDueTwoThousandTwentyThree, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value303305305304298293304
Percentage of SeniorLongTermNotes126.6127.5108.193.992.183.90.0

iff:SeniorNotesDueTwoThousandandTwenty, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2992992992982982980
Percentage of SeniorLongTermNotes125.0124.9105.992.292.185.50.0

iff:SeniorNotesDueTwoThousandandTwenty, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3013023033032993003010
Percentage of SeniorLongTermNotes125.7126.3107.493.592.386.00.00.0

iff:SeniorNotesEuroNoteDueTwoThousandTwentyFour, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value546558544565558564589
Percentage of SeniorLongTermNotes227.8232.9192.7174.3172.3161.50.0

iff:SeniorNotesEuroNoteDueTwoThousandTwentyFour, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value549586579605596584627
Percentage of SeniorLongTermNotes229.1244.9205.0186.8183.8167.30.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3273343253383343373520
Percentage of SeniorLongTermNotes136.6139.6115.4104.4103.196.70.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3273383313443403413520
Percentage of SeniorLongTermNotes136.7141.2117.3106.3104.997.70.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentySix, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8708908689028918999390
Percentage of SeniorLongTermNotes363.3371.5307.4278.1275.0257.70.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentySix, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8229459299679349099400
Percentage of SeniorLongTermNotes343.3394.5328.9298.3288.1260.50.00.0

iff:TermLoanCreditAgreement, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2392392823243243490
Percentage of SeniorLongTermNotes100.0100.0100.0100.0100.0100.00.0

iff:TermLoanCreditAgreement, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value240240283325325350
Percentage of SeniorLongTermNotes100.1100.2100.2100.2100.2100.2

us-gaap:LongtermDebtType

iff:AmortizingNote



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7082931031141250
Percentage of SeniorLongTermNotes29.634.333.032.135.435.80.0

iff:SeniorNotesDueTwoThousandFortyEight



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value7867857857857857857850
Percentage of SeniorLongTermNotes328.0328.0278.2242.3242.3225.00.00.0

iff:SeniorNotesDueTwoThousandFortySeven



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value493493493493493493492
Percentage of SeniorLongTermNotes206.0206.0174.7152.1152.1141.20.0

iff:SeniorNotesDueTwoThousandTwentyEight



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3963963963963963963950
Percentage of SeniorLongTermNotes165.6165.5140.4122.2122.3113.50.00.0

iff:SeniorNotesDueTwoThousandTwentyThree



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value299299298298298298298
Percentage of SeniorLongTermNotes124.8124.8105.892.192.185.50.0

iff:SeniorNotesDueTwoThousandandTwenty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2992992992982982982970
Percentage of SeniorLongTermNotes125.0124.9105.992.292.185.50.00.0

iff:SeniorNotesEuroNoteDueTwoThousandTwentyFour



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value546558544565558564589
Percentage of SeniorLongTermNotes227.8232.9192.7174.3172.3161.50.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentyOne



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-252017-12-31
Value3273343253383343373003000
Percentage of SeniorLongTermNotes136.6139.6115.4104.4103.196.70.00.00.0

iff:SeniorNotesEuroNotesDueTwoThousandTwentySix



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-09-252017-12-31
Value8708908689028918998008000
Percentage of SeniorLongTermNotes363.3371.5307.4278.1275.0257.70.00.00.0

us-gaap:LongtermDebtType

us-gaap:ShortTermBorrowings

iff:BankBorrowingsAndOverdrafts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value23448454579101313131514101413141212420100040011519311
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value58406229606662096154604340371756177816891762168016311631169816771635159415961626157215221643160115201467143913741310125212501226120111071198118811021003771
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1164-716-867-668-657-702-715-692-620-637-680-613-540-392-403-375-275-270-325-144
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-19.9-11.5-14.3-10.8-10.7-11.6-17.7-39.4-34.9-37.7-41.7-38.5-35.5-26.8-32.2-33.9-27.4-35.10.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value383538233816380538023793244116716616215214014013112712812311010654
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest65.761.462.961.361.862.860.59.59.49.69.38.89.29.010.211.612.314.30.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1616161616161614141414141414141414141414
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.30.30.30.30.30.30.40.80.80.90.90.91.01.01.21.31.41.90.00.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value12121110111066554443323279
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.20.20.20.20.20.20.20.40.30.30.30.30.30.30.30.30.40.40.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value41624117411440694011395640213992394738703818360433503075284126922519233922222078
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest71.366.167.865.565.265.599.6227.3221.9229.1234.1226.0220.1209.6226.8243.2251.2303.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1021-1022-1023-1023-1029-1030-1731-1732-1735-1726-1679-1555-1446-1365-1330-1356-1383-1424-1444-1386
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-17.5-16.4-16.9-16.5-16.7-17.1-42.9-98.6-97.5-102.2-102.9-97.5-95.0-93.1-106.2-122.5-137.9-184.50.00.0

us-gaap:BalanceSheetLocation

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:OtherLiabilities



Period End2020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-03-312014-12-31
Value141111222111100000
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:BalanceSheetLocation

srt:Maximum, us-gaap:OtherCurrentLiabilities



Period End2020-03-31
Value100000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued0.7

us-gaap:BalanceSheetLocation

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:OtherCurrentLiabilities



Period End2020-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302015-03-31
Value011565440
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLiabilities



Period End2020-03-312019-09-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302015-03-31
Value71613230281817221914
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate10200.00.03220.03060.0570.0273.9298.3482.6400.02114.3

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:ConcentrationRiskByType


us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementEquityComponents


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:PropertyPlantAndEquipmentNet us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:StatementGeographical


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType