WAT


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementClassOfStock
us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:MajorCustomers
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService
us-gaap:StatementGeographical
us-gaap:TimingOfTransferOfGoodOrService
us-gaap:ProductOrService
us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent
us-gaap:DebtInstrument

us-gaap:NotesPayableCurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebtNoncurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock
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:ProfitLoss

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:RepaymentsOfLongTermDebt

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:Range, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensation

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AdjustmentForAmortization

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AmortizationOfAcquisitionCosts

us-gaap:AmortizationOfDeferredCharges

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainOnDerivative

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:IncomeTaxHolidayAggregateDollarAmount

us-gaap:IncomeTaxHolidayIncomeTaxBenefitsPerShare

us-gaap:IncomeTaxReconciliationDeductionsOther

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InvestmentIncomeInterest

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
us-gaap:StatementClassOfStock

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementClassOfStock

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:PaymentsForProceedsFromDerivativeInstrumentFinancingActivities

us-gaap:PaymentsForProceedsFromProductiveAssets

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:Range, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:Range, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:Range, us-gaap:AwardType
us-gaap:Range, us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:StandardProductWarrantyAccrualPayments

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued
us-gaap:StatementClassOfStock
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementClassOfStock
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:AwardType
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementClassOfStock
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:ShareRepurchaseProgram
us-gaap:StatementClassOfStock

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:AwardType
wat:CorrelationCoefficient

wat:PercentagePointChangeInEffectiveTaxRateRelatingToInfrequentIncomeTaxItems
us-gaap:AwardType
wat:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies
us-gaap:StatementGeographical
wat:StatutoryTaxRate
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
us-gaap:DerivativeInstrumentRisk, us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccruedIncomeTaxesNoncurrent
us-gaap:StatementEquityComponents
us-gaap:AccruedLiabilitiesCurrent

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

us-gaap:CashCashEquivalentsAndShortTermInvestments
dei:LegalEntity
us-gaap:InvestmentType

us-gaap:ContractWithCustomerLiability
us-gaap:BalanceSheetLocation
us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DebtAndCapitalLeaseObligations
us-gaap:CreditFacility
us-gaap:DebtInstrumentCarryingAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount
us-gaap:LongtermDebtType
us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredFinanceCostsNet
us-gaap:Range
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetNotionalAmount
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityNotionalAmount

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisObligations
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtFairValue

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

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

us-gaap:StandardProductWarrantyAccrualCurrent

us-gaap:TreasuryStockShares
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
wat:RealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

Tables

  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:CommonStockValue ▄▄11NA1NA1NA11NA11111111NA1NA1NA111111111111111111111111111NANANA
 us-gaap:SharesIssued us-gaap:StatementClassOfStock us-gaap:CommonStock▄▄161161NA160NA160NA160160NA160160160160159NANANANANANA158NANANANANANANANANANANANANANANANANANANANANANANANANANANA148NANANA
us-gaap:CommonStockSharesIssued ▄▄161161NA160NA160NA160160NA160160160160159159159159NA159NA158NA158157157157157157156156156156155154154154153153153153152152152151151149149149148NANANA
us-gaap:CommonStockSharesOutstanding ▁█6162NA65NA67NA7073NA7577777879797979NA80NA80NA808081818282838383848484858586868788888991919191929294NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁▁▂▂▂▂▃▃▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇█████6264666669697272757777787879798080808080808081818182828383848485858686868787888990909293939393949596969697
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▁▂▂▂▂▃▃▃▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇███6263666668687171747676777778797979797980808080808181828283838384848585858686878888899091919191929394959697
us-gaap:EarningsPerShareBasic ▆█▇▇▇▇▆▆▇▇▇▇▇▆▁▇▇▇▇▆▆▇▇▇▆▇▆▆▆▇▆▆▆0.863.152.092.092.092.091.521.522.481.841.842.02.01.42-4.441.711.711.651.651.321.322.171.551.591.161.851.421.281.161.821.361.140.83NANANANANANANANANANANANANANANA0.81NANANA0.75
us-gaap:EarningsPerShareDiluted ▆█▇▇▇▇▇▇▇▇▇▇▇▆▁▇▇▇▇▆▆▇▇▇▆▇▆▆▆▇▆▆▆0.863.122.072.072.082.081.511.512.461.831.831.981.981.4-4.441.691.691.631.631.311.312.151.531.571.151.831.41.271.151.81.341.130.82NANANANANANANANANANANANANANANA0.79NANANA0.75
  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▃█▅▅▆▆▄▄█▅▅▆▆▅▇▅▅▅▅▄▄▆▅▅▄▆▄▄▃▆▄▄▃▅▃▃▃▄▃▃▃▄▃▃▃▄▂▂▂▃▂▂▁464716577577599599513513715578578596596530687565565558558497497628526536475586500494460583493481430565457451430521449451420521454447427483401391367428373362333
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers wat:GovernmentalAndAcademicCustomers▁█49107NA77NA72NA6498NA8074746397757564NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers wat:IndustrialCustomers▁█143216NA171NA176NA155219NA171183183162216168168174NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers wat:PharmaceuticalCustomers▁█272392NA328NA350NA294396NA325338338305373321321319NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Product▁█274488NA370NA387NA320498NA378388388339479375375372NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:Service▁█190227NA206NA211NA193216NA199207207191207190190185NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wat:ChemistryConsumables▁█97112NA100NA100NA99106NA95999998100929290NA87NA9084NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wat:WatersInstrumentSystems▁█142316NA223NA238NA184323NA238239239198313238238238NA197NA296226231188270219217188275213206176263196195184245202203176261212206197246185182158212172170NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wat:WatersService▁█174205NA188NA192NA176195NA180188188174187172172168NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:TimingOfTransferOfGoodOrService us-gaap:Service,us-gaap:TransferredAtPointInTime▁█6790NA75NA84NA7288NA7580807286727272NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:TimingOfTransferOfGoodOrService us-gaap:Service,us-gaap:TransferredOverTime▁█123137NA131NA127NA120127NA123126126119120117117112NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:TimingOfTransferOfGoodOrService wat:ChemistryConsumables,us-gaap:TransferredAtPointInTime▁█97112NA100NA100NA99106NA95999998100929290NA87NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:TimingOfTransferOfGoodOrService wat:InstrumentSystems,us-gaap:TransferredAtPointInTime▁█176376NA270NA286NA221392NA282289289240379282282282NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:CN▁█47125NA111NA112NA90130NA10910910993111969694NA85NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▁█143205NA164NA173NA149204NA170161161146194171171164NA139NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:Americas▁█172245NA196NA206NA181248NA206198198181235203203196NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:NetCashProvidedByUsedInInvestingActivities ▁█-130-56NA40NA351NA434425NA51310310895-131-110-110NANANANANANANANANANANANANANANA-119-135-131-107-902-108-127-62-161NANA-121-79NANA-116-114NANA-101
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁32-211NA-366NA-571NA-723-493NA-256-364-364-1006-24-17-17NANANANANANANANANANANANANANANA-40-2-8-18-34-13-16-24-11-22NANA-27-1NANA-18-50NANA-14
  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁█151191NA148NA127NA175181NA146100100175192154154NANANANANANANANANANANANANANANA115143104109127131101105111150NANA122134NANA103119NANA80
us-gaap:ProfitLoss ▁█53200NA138NA144NA108185NA141155155111-353136136NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA75NANANA73
us-gaap:IncreaseDecreaseInInventories █▁29-52NA21NA17NA44-22NA135528-2677NANA10NA-19NANA20-19NANA21-205724-199712-1471118-27NANA171NANA-16-25NANA-17
  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁█-130-56NA40NA351NA434425NA51310310895-131-110-110NANANANANANANANANANANANANANANA-119-135-131-107-902-108-127-62-161NANA-121-79NANA-116-114NANA-101
us-gaap:PaymentsToAcquireInvestments █▁31NA0NA8NA2697NA394343343170615790790NANA823NA472NANA685543NANA794465552571607NANANANANANANANANANANANANANANANANANANANA
  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁32-211NA-366NA-571NA-723-493NA-256-364-364-1006-24-17-17NANANANANANANANANANANANANANANA-40-2-8-18-34-13-16-24-11-22NANA-27-1NANA-18-50NANA-14
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁█315325NA599NA0NA00NA000013504545NANA40NA45NANA11040NANA1204526066103040895653050875040NANA2420NANA21315NANA94
us-gaap:RepaymentsOfLongTermDebt █▁1000NA390NA0NA00NA0100100750131000NANA0NA0NANA600NANA10010223510158601003101821NANA21726NANA-132-156NANA-46
us-gaap:PaymentsForRepurchaseOfCommonStock ▁█196559NA580NA576NA753498NA263270270282867979NANA89NA83NANA9579NANA917576929275556910160631036872NANA7351NANA-105-368NANA-63
  2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:RepaymentsOfLongTermDebt █▁1000NA390NA0NA00NA0100100750131000NANA0NA0NANA600NANA10010223510158601003101821NANA21726NANA-132-156NANA-46

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value111111111111111111111111111111111111111111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.1

Common Stock Par Or Stated Value Per Share

Shares Issued

us-gaap:StatementClassOfStock

us-gaap:SharesIssued

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-312009-12-312008-12-312007-12-312006-12-31
Value161161160160160160160160160159158148148147144
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value161161160160160160160160160159159159159158158157157157157157156156156156155154154154153153153153152152152151151149149149148148
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value616265677073757778797979808080808181828283838384848485858686878888899191919192929497
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value6264666669697272757777787879798080808080808081818182828383848485858686868787888990909293939393949596969697
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value6263666668687171747676777778797979797980808080808181828283838384848585858686878888899091919191929394959697
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292010-04-032009-04-04
Value0.863.152.092.092.092.091.521.522.481.841.842.02.01.42-4.441.711.711.651.651.321.322.171.551.591.161.851.421.281.161.821.361.140.830.810.75
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292010-04-032009-04-04
Value0.863.122.072.072.082.081.511.512.461.831.831.981.981.4-4.441.691.691.631.631.311.312.151.531.571.151.831.41.271.151.81.341.130.820.790.75
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value464716577577599599513513715578578596596530687565565558558497497628526536475586500494460583493481430565457451430521449451420521454447427483401391367428373362333
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MajorCustomers

wat:GovernmentalAndAcademicCustomers



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value491077772649880747463977564
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.515.013.512.212.513.814.012.411.914.113.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.50.013.512.212.50.014.012.412.411.914.113.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:GovernmentalAndAcademicCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:IndustrialCustomers



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value143216171176155219171183183162216168174
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.830.329.729.430.230.729.830.830.631.629.831.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.80.029.729.430.20.029.830.830.830.631.629.831.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:IndustrialCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PharmaceuticalCustomers



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value272392328350294396325338338305373321319
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.654.856.958.457.355.556.356.757.554.356.957.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.60.056.958.457.30.056.356.756.757.554.356.957.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:PharmaceuticalCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:Product



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value274488370387320498378388388339479375372
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.068.264.264.662.469.765.565.263.969.866.466.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.00.064.264.662.40.065.565.265.263.969.866.466.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value190227206211193216199207207191207190185
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.031.835.835.437.630.334.534.836.130.233.633.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.00.035.835.437.60.034.534.834.836.130.233.633.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:ChemistryConsumables



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-01
Value971121001009910695999998100929290879084
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.915.717.416.719.314.916.616.618.614.616.416.317.714.316.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.90.017.416.719.30.016.616.616.618.614.616.416.416.317.714.316.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:ChemistryConsumables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:TaInstrumentSystems



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-04
Value34604648366843494942654444433856394035593936365040383355403536493537344736353239313027352423
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.38.48.08.07.19.67.58.48.09.57.87.87.88.97.57.67.410.17.97.47.98.78.18.07.79.98.97.88.49.47.88.48.39.08.07.97.58.37.97.77.68.36.76.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.30.08.08.07.10.07.58.48.48.09.57.87.87.87.88.97.57.67.410.17.97.47.98.78.18.07.79.98.97.88.49.47.88.48.39.08.07.97.58.37.97.77.68.36.76.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:TaInstrumentSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:TaService



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value16211819172118191917191717
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.13.23.33.43.03.23.23.22.93.13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.03.23.33.40.03.23.23.23.22.93.13.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:TaService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:WatersInstrumentSystems



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-04
Value142316223238184323238239239198313238238238197296226231188270219217188275213206176263196195184245202203176261212206197246185182158212172170
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.744.238.839.935.945.341.340.237.345.742.242.739.747.243.043.239.746.143.844.040.947.243.242.841.046.643.143.342.947.045.045.242.050.246.846.146.250.946.346.743.149.646.247.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.70.038.839.935.90.041.340.240.237.345.742.242.242.739.747.243.043.239.746.143.844.040.947.243.242.841.046.643.143.342.947.045.045.242.050.246.846.146.250.946.346.743.149.646.247.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:WatersInstrumentSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:WatersService



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value174205188192176195180188188174187172168
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.528.732.632.134.327.331.331.632.927.330.530.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.50.032.632.134.30.031.331.631.632.927.330.530.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:WatersService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService

us-gaap:Service, us-gaap:TransferredAtPointInTime



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value67907584728875808072867272
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.612.613.014.214.212.413.113.513.712.612.813.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.60.013.014.214.20.013.113.513.513.712.612.813.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service, us-gaap:TransferredOverTime



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value123137131127120127123126126119120117112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.519.122.821.223.517.921.421.322.417.620.820.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.50.022.821.223.50.021.421.321.322.417.620.820.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service us-gaap:TransferredOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:ChemistryConsumables, us-gaap:TransferredAtPointInTime



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value971121001009910695999998100929087
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.915.717.416.719.314.916.616.618.614.616.416.317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.90.017.416.719.30.016.616.616.618.614.616.416.317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:ChemistryConsumables us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:InstrumentSystems, us-gaap:TransferredAtPointInTime



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value176376270286221392282289289240379282282
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.152.646.847.943.154.848.948.645.355.250.050.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.10.046.847.943.10.048.948.648.645.355.250.050.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:InstrumentSystems us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:CN



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value471251111129013010910910993111969485
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.217.519.318.817.518.219.018.417.716.317.016.917.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.20.019.318.817.50.019.018.418.417.716.317.016.917.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:JP



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value4544464543434343434242424141
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.76.28.17.78.56.17.57.28.16.17.57.48.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.70.08.17.78.50.07.57.27.28.16.17.57.48.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:JP100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value143205164173149204170161161146194171164139
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.928.628.429.029.028.629.527.127.728.330.229.428.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.90.028.429.029.00.029.527.127.127.728.330.229.428.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value172245196206181248206198198181235203196
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.034.234.034.535.434.835.833.234.234.335.935.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.00.034.034.535.40.035.833.233.234.234.335.935.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Americas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value159261237238200262222236236200242209215
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.236.641.239.939.036.838.439.737.735.337.038.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.20.041.239.939.00.038.439.739.737.735.337.038.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value133209143153131203149161161148209153145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.829.224.825.625.628.525.827.028.030.427.126.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.80.024.825.625.60.025.827.027.028.030.427.126.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:AmericasOther



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value2840323232443636363441313235
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.15.65.65.56.46.26.26.16.66.05.75.87.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.10.05.65.56.40.06.26.16.16.66.05.75.87.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:AmericasOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:AsiaOther



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value6692798066886884846388708068
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.412.913.713.413.012.411.914.112.012.912.614.313.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.40.013.713.413.00.011.914.114.112.012.912.614.313.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:AsiaOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value341579445472393587454469469411566447445391
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.580.977.278.876.582.178.678.777.682.479.279.978.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.50.077.278.876.50.078.678.778.777.682.479.279.978.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Goods And Services Sold

us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

us-gaap:Product



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value119203149156132200155159159140186155148
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.80.025.926.225.80.027.026.826.826.527.127.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product43.741.640.440.541.340.141.241.141.141.438.941.439.7

us-gaap:Service



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value90959192888685838380848081
Percentage of CostOfGoodsAndServicesSold75.846.960.959.067.043.454.752.057.645.151.655.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.50.015.815.517.20.014.813.913.915.312.214.214.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service47.642.044.243.745.840.142.840.140.142.340.542.244.0

Cost Of Goods Sold

Cost Of Services

Gross Profit

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-04
Value396479404404421421392392470406406417417386457406406404404379379420375384362405364364340
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax85.367.070.070.070.370.376.476.465.870.370.369.969.972.866.571.971.972.572.476.176.266.971.271.776.369.172.973.773.9

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value3437343436363535383535353534353333323230303230322928303028282726242623242524232323232323222220202019191918
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.55.25.95.96.16.16.86.85.36.16.16.06.06.55.16.06.05.95.96.26.25.25.86.16.24.86.16.26.34.95.55.65.74.85.25.55.94.85.35.35.64.55.15.15.24.75.15.35.54.65.25.45.5

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value14714112612613313313413414212612613613613014813513513013013013013012312912912812412211913112213112613012012311812211512211712612112511712011110610610910210999
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.819.721.821.822.222.226.126.120.022.022.022.922.924.621.623.923.923.323.326.226.220.723.524.227.221.924.924.826.022.624.827.429.423.126.427.327.623.425.627.227.924.226.728.027.424.927.827.329.025.627.530.229.8

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value682361731731771771211212441711711791791442301591591531531181182081511511121811351301191721381188817611911210915912112011016412712011514810310592126968685
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.733.030.030.029.729.723.623.634.229.729.730.130.127.233.528.128.127.527.623.923.833.128.828.323.730.927.126.326.129.528.124.620.631.226.025.025.430.627.126.626.231.628.026.927.130.625.927.025.129.525.723.925.7

Interest Expense

us-gaap:InterestExpense



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value1414111111111111111111111113151414141412121211101099989977777777666654333-2222-3
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.02.02.02.01.91.92.32.31.62.02.02.02.02.62.22.62.62.52.52.62.61.92.22.02.11.61.81.81.91.71.81.71.71.41.61.71.71.51.61.51.51.31.41.11.00.81.00.9-0.70.50.80.7-0.9

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-31
Value0-2000000-4500-1-10000000
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.3-0.1-0.1-0.1-0.1-0.1-0.1-6.4-0.1-0.1-0.3-0.30.1-0.10.0-0.0-0.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-30
Value5722416416417117111711719716916917417414022515315314814811311320214514510617512912311316413111282169112104103
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.431.328.528.528.728.722.822.827.729.329.329.329.326.532.827.227.226.526.522.822.832.227.627.122.429.925.925.024.628.226.623.319.229.924.623.224.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

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 End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value42326262727881228281818285781717161677282017122413181713171512271415-17-221616152120161818517142018149
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.93.34.64.64.64.61.61.61.84.94.93.23.25.484.23.13.12.92.91.61.64.53.93.22.64.12.73.73.82.33.63.22.94.93.23.4-4.1-4.43.73.73.84.14.53.64.23.81.44.54.04.84.84.13.0

Income Taxes Paid Net

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302010-04-032009-04-04
Value53200138144108185141155111-3531367573
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.50.023.924.121.20.024.426.121.1-51.424.120.522.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value34200133137118192148111111133-342163170
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.40.023.223.023.00.025.618.718.725.1-49.928.930.6

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-30
Value53200138138144144108108185141141155155111-353136136131131105105174124128941511161059615111396701419889121
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.528.023.923.924.124.121.221.225.924.424.426.126.121.1-51.424.124.123.623.621.221.227.723.723.919.825.823.221.420.925.923.020.016.325.021.419.828.1

us-gaap:StatementClassOfStock

us-gaap:RetainedEarnings



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value53200138144108185141155111
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.50.023.924.121.20.024.426.121.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value53200138144108185141155155111-353136131105
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.50.023.924.121.20.024.426.126.121.1-51.424.123.621.2

Assets

us-gaap:Assets



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value266625572561282232493727404341574489532451624996481046624448436842684121402838723877375137273649358234253285320731682997288328392723263925712447232722052036198119071622
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value30042773244522662281216021662182237430902533247824152360229822662209215220962010198319091884183018191806176517301700166716201551149614801346129612581282122311681058961
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets112.7108.595.580.370.258.053.652.552.958.049.149.650.250.651.751.951.852.252.051.951.150.950.550.250.852.753.754.053.755.656.254.755.056.152.353.054.158.160.159.055.559.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value266625572561282232493727404341574489532451624996481046624448436842684121402838723877375137273649358234253285320731682997288328392723263925712447232722052036198119071622
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-312008-12-312007-12-31
Value-337-21611555696715671876197521142233262925182394230121492101205819681932186218941841184318191763161815201476146713291262128712261159122511501068923812848661586
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-12.7-8.54.519.729.842.046.447.547.142.050.950.449.849.448.348.148.247.848.048.148.949.149.549.849.247.346.346.046.344.443.845.345.043.947.747.045.941.939.944.540.70.0

us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-138-119-119-115-108-117-125-132-88-110-216
Percentage of StockholdersEquity41.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.2-4.9-9.4
Percentage of Assets-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-4.6
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value19471926189718831872183418151798177917451607
Percentage of StockholdersEquity-576.2-890.91643.1338.7193.5117.196.791.184.178.169.8
Percentage of Assets73.075.474.166.757.649.244.943.339.632.834.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value11111111111
Percentage of StockholdersEquity-0.5-0.71.40.30.20.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value66396587638662486104599558105669551354055385
Percentage of StockholdersEquity-1964.5-3045.85529.61123.4630.8382.5309.6287.0260.7242.0233.9
Percentage of Assets249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5115.5
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-8788-8612-8051-7462-6901-6146-5624-5361-5090-4808-4475
Percentage of StockholdersEquity2600.23982.1-6970.6-1341.6-713.2-392.2-299.8-271.4-240.7-215.2-194.4
Percentage of Assets-329.6-336.8-314.3-264.4-212.4-164.9-139.1-128.9-113.4-90.3-96.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-15-15-9-9-9-9-34-35-37
Percentage of StockholdersEquity4.47.1-8.2-1.8-1.0-0.6-1.9-1.8-1.7
Percentage of Assets-0.6-0.6-0.4-0.3-0.3-0.3-0.9-0.9-0.7
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-138-119-119-115-108-117-125-132-110-216-146-785-26-36-1115-866
Percentage of StockholdersEquity41.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.9-9.4-7.1-4.20.3-1.8-2.9-1.11.8-1.311.3
Percentage of Assets-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.1-4.6-3.4-2.00.2-0.8-1.3-0.50.8-0.50.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-123-104-110-105-98-105-87-92-69
Percentage of StockholdersEquity36.548.1-95.3-18.9-10.1-6.7-4.7-4.7-3.1
Percentage of Assets-4.6-4.1-4.3-3.7-3.0-2.8-2.2-2.2-1.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value13271312134316202077266329703124343842704078394737783635340533103213309330062875285326992680260725562429234422872257213720652023194218631800168315861438131112491172956
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.851.352.557.463.971.473.575.176.680.279.079.078.578.076.675.875.375.174.674.373.672.071.971.471.470.971.471.371.371.371.671.371.370.670.068.868.265.264.463.161.458.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-042008-12-312007-12-312006-12-31
Value390335404587684796689742716642603567584505430463416487459365440422356428395440431455472481356369427383423344296308262310297341390358388428597514
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.613.115.820.821.121.417.117.916.012.111.711.412.110.80.010.49.511.411.19.111.410.99.511.510.812.312.613.814.715.211.912.815.014.116.113.412.113.311.915.315.017.90.00.00.026.40.00.0

Short Term Investments

us-gaap:ShortTermInvestments



Period End2020-03-282019-12-312019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value318748293813941506183527512651255823822307213620881911185118431668163315891488145713621268119411171057109210229268977707767426375744433952890
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.13.114.825.234.536.240.951.751.351.249.549.548.047.844.844.945.743.142.142.439.939.938.037.036.434.933.436.435.532.633.029.230.230.327.426.021.819.915.20.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value522587504518508568489492502533456462461489445439468416406394433393401401430373365377404362355353367354365349358337314313314291
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.623.019.718.415.615.212.111.911.210.08.89.39.610.510.010.111.010.110.110.211.210.510.811.012.010.911.111.812.812.112.312.513.513.414.214.315.415.315.415.816.518.0

Inventory Net

us-gaap:InventoryNet



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value344320368351333291313299299270297287279262286287263281272257246269272266242256242235229246236233212246243223204208191189178173
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.912.514.412.510.37.87.87.26.75.15.85.75.85.66.46.66.26.86.86.66.47.27.37.36.87.57.47.47.28.28.28.27.89.39.59.18.89.49.49.69.410.7

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value676765746868838384726971707073788285118115118908886789986848479818280686971775551534962
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.62.62.62.11.82.12.01.91.41.31.41.51.51.71.81.92.12.93.03.12.42.42.42.22.92.62.62.72.72.82.93.02.62.72.93.32.52.52.72.63.9

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value439417381368355343338335349349342338334337330336333325324316321322328329324313295282273261251238237221218216215214210208210171
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.516.314.913.111.09.28.48.17.86.66.66.87.07.27.47.77.87.98.18.28.38.68.89.09.19.29.08.88.68.78.78.48.78.48.58.99.29.710.310.511.110.6

Long Term Investments

Goodwill

us-gaap:Goodwill



Period End2020-03-282020-01-152019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value42372356353355356355357357362359359357353352352356356352353350354358354353350340315315316316306309297298294293291292289291293268
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.90.013.913.812.611.09.58.98.68.16.87.07.17.47.67.98.28.48.58.89.09.29.69.59.79.89.99.69.810.010.610.610.910.911.311.412.012.513.314.214.715.416.5

us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

wat:AndrewAlliance



Period End2020-01-15
Value71
Percentage of Goodwill99.5
Percentage of Assets0.0
Percentage of Assets wat:AndrewAlliance0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value243240237244243246252218231228224219211207217223218222223213232241237238239230219214220212199205191196195191181183172179182149
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.19.49.38.67.56.66.35.25.24.34.34.44.44.44.95.15.15.45.55.56.06.46.46.56.76.76.76.76.97.16.97.27.17.47.67.87.88.38.59.19.59.2

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value14113715914212111812312210711615813413313014114014612612011611512912712011111111010610069616254606461527651514976
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.35.46.25.13.73.23.02.92.42.23.12.72.82.83.23.23.43.13.03.03.03.43.43.33.13.33.43.33.22.32.12.22.02.32.52.52.33.52.52.62.64.7

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value551591597611603448448474534606662653632520522524564535546538581574594584487492474476504767721648601605467716385417362305394289
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.723.123.321.718.612.011.111.411.911.412.813.113.111.211.712.013.213.013.613.915.015.316.016.013.614.414.514.915.925.625.022.822.122.918.229.316.618.917.815.420.717.8

Debt Current

us-gaap:DebtCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value5010010010010000001002252252251251251251751751751752252252332321331331321331324474013232902711363906692561213136
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.93.93.93.63.10.00.00.00.01.94.44.54.72.72.82.94.14.34.44.55.86.06.36.43.73.94.04.24.214.913.911.410.710.35.316.02.84.22.80.66.92.2

us-gaap:DebtInstrument

wat:SeniorUnsecuredNotesSeriesE



Period End2020-03-28
Value50
Percentage of DebtCurrent100.0
Percentage of Assets1.9
Percentage of Assets wat:SeniorUnsecuredNotesSeriesE0.0

Notes Payable Current

us-gaap:NotesPayableCurrent



Period End2020-03-282019-12-312019-09-282018-12-31
Value501001000
Percentage of NotesPayableCurrent100.0100.0100.0100.0
Percentage of Assets1.93.93.90.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value614964677268657170646671666766737061656365606573646256595460626155646767646359574947
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.31.92.52.42.21.81.61.71.61.21.31.41.41.51.51.71.71.51.61.71.71.61.72.01.81.81.71.91.72.02.22.22.02.42.62.82.82.92.92.92.62.9

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value4645493819225964100732412157101452219151433193921276020132092582311292618130
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.81.81.91.40.60.61.51.52.21.40.50.00.10.30.20.20.30.10.60.50.40.40.10.10.61.20.60.91.90.70.50.70.31.00.30.90.51.41.30.90.70.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value1131379810193115848510311910599929284809382757085808474857983739070716773626760726159555864
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.25.43.93.62.93.12.12.12.32.22.02.01.92.01.91.82.22.01.91.82.22.12.32.02.42.32.52.32.82.42.52.42.72.42.62.53.12.82.92.83.04.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value24532182184816541678171117181707184024841871182417831839177617421645161615491472140113351289124513311313129012531196899899903894874879580873864860862664672
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets92.085.372.258.651.745.942.541.141.046.736.336.537.139.539.939.938.639.238.538.036.135.634.634.137.238.439.339.137.830.031.231.832.933.134.223.737.539.242.343.634.841.4

Long Term Debt

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value18451580125510481048114811481147124718971732168716421701163115931493145513851310124012051160110011901160113511001045700700700700700700400700700700700500500
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.261.849.037.132.330.828.427.627.835.633.633.834.136.536.736.535.035.334.433.832.032.131.130.133.233.934.534.333.023.424.324.725.726.527.216.330.131.734.435.326.230.8

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wat:FixedInterestRate, us-gaap:UnsecuredDebt



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-31
Value91010001000510510510510510610
Percentage of LongTermDebtNoncurrent49.363.379.648.644.444.444.440.932.1
Percentage of Assets34.139.139.018.113.712.612.311.411.5
Percentage of Assets wat:FixedInterestRate us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.0

us-gaap:LongtermDebtType

us-gaap:UnsecuredDebt



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-04-012016-12-312016-04-022015-12-312014-12-31
Value96000011001100560560560560560600700700700450500600
Percentage of LongTermDebtNoncurrent52004.969.687.653.453.448.848.848.848.136.942.641.128.233.548.4
Percentage of Assets36002.043.042.919.817.215.013.913.513.413.114.615.010.311.715.5
Percentage of Assets us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value55595555565563676767697272727070777783848557597674102101101101969710292717675726767696977
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.32.22.01.71.51.61.61.51.31.31.41.51.61.61.61.81.92.12.22.21.51.62.12.13.03.13.23.23.23.43.63.42.73.03.13.13.13.33.53.64.7

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value948082907576777467626256595461656064615656504644413232292533312929252525222119212215
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.53.23.23.22.32.01.91.81.51.21.21.11.21.21.41.51.41.61.51.51.41.31.21.21.21.01.00.90.81.11.11.01.11.01.01.01.01.01.01.11.20.9

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-312008-12-312007-12-31
Value-337-21611555696715671876197521142233262925182394230121492101205819681932186218941841184318191763161815201476146713291262128712261159122511501068923812848661586
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-12.7-8.54.519.729.842.046.447.547.142.050.950.449.849.448.348.148.247.848.048.148.949.149.549.849.247.346.346.046.344.443.845.345.043.947.747.045.941.939.944.540.70.0

us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-138-119-119-115-108-117-125-132-88-110-216
Percentage of StockholdersEquity41.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.2-4.9-9.4
Percentage of Assets-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-4.6
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value19471926189718831872183418151798177917451607
Percentage of StockholdersEquity-576.2-890.91643.1338.7193.5117.196.791.184.178.169.8
Percentage of Assets73.075.474.166.757.649.244.943.339.632.834.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value11111111111
Percentage of StockholdersEquity-0.5-0.71.40.30.20.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value66396587638662486104599558105669551354055385
Percentage of StockholdersEquity-1964.5-3045.85529.61123.4630.8382.5309.6287.0260.7242.0233.9
Percentage of Assets249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5115.5
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-8788-8612-8051-7462-6901-6146-5624-5361-5090-4808-4475
Percentage of StockholdersEquity2600.23982.1-6970.6-1341.6-713.2-392.2-299.8-271.4-240.7-215.2-194.4
Percentage of Assets-329.6-336.8-314.3-264.4-212.4-164.9-139.1-128.9-113.4-90.3-96.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-15-15-9-9-9-9-34-35-37
Percentage of StockholdersEquity4.47.1-8.2-1.8-1.0-0.6-1.9-1.8-1.7
Percentage of Assets-0.6-0.6-0.4-0.3-0.3-0.3-0.9-0.9-0.7
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-138-119-119-115-108-117-125-132-110-216-146-785-26-36-1115-866
Percentage of StockholdersEquity41.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.9-9.4-7.1-4.20.3-1.8-2.9-1.11.8-1.311.3
Percentage of Assets-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.1-4.6-3.4-2.00.2-0.8-1.3-0.50.8-0.50.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-123-104-110-105-98-105-87-92-69
Percentage of StockholdersEquity36.548.1-95.3-18.9-10.1-6.7-4.7-4.7-3.1
Percentage of Assets-4.6-4.1-4.3-3.7-3.0-2.8-2.2-2.2-1.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value111111111111111111111111111111111111111111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value663965876386624861045995581056695513540557585622549053855085495748634712459644904394424341294033396238213723363335123336323731403051291428132712261824912397231222361913
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5111.5112.5114.1115.5114.3113.5113.9114.3114.1116.0113.3113.1110.8110.5110.6111.6113.3113.3110.9111.3112.3110.6112.1110.4109.4110.9112.5113.0117.7116.7117.2117.9

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value878886128051746269016146562453615090480847214641456444754322424541494070398639063815373936623570347734023347327731763115305129482880280726632582250924582392-2318-2213-2001
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets329.6336.8314.3264.4212.4164.9139.1128.9113.490.391.492.994.996.097.297.297.298.898.9100.998.499.798.397.897.199.3101.9102.2100.3104.0105.8103.8105.8106.4103.6105.5107.8111.4117.5-117.0-116.0-123.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value-138-119-119-115-108-117-125-132-88-110-120-147-186-216-156-127-146-126-118-138-78-1039325-25-53-54-26-29-53-22-3603222-113-36-715-8
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-2.3-3.0-3.9-4.6-3.5-2.9-3.4-3.1-2.9-3.6-2.0-0.31.00.90.2-0.7-1.6-1.7-0.8-1.0-1.9-0.8-1.3-0.01.30.9-0.50.2-1.8-0.40.8-0.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value15119114812717518114610017519215411514310410912713110110511115012213410311980
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.60.025.721.234.20.025.316.933.128.027.326.925.322.924.229.725.222.523.326.428.828.727.728.127.924.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-130-564035143442551310895-131-110-119-135-131-107-902-108-127-62-161-121-79-116-114-101
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.00.07.058.684.50.08.952.1168.8-19.2-19.5-27.9-23.9-28.7-23.8-21.00.5-24.0-28.3-15.0-30.9-28.3-16.4-31.6-26.8-30.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value32-211-366-571-723-493-256-364-1006-24-17-40-2-8-18-34-13-16-24-11-22-27-1-18-50-14
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.0-63.5-95.4-140.70.0-44.3-61.1-189.6-3.5-3.0-9.4-0.4-2.0-4.1-8.0-2.5-3.7-5.4-2.9-4.3-6.4-0.3-5.0-11.7-4.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value15119114812717518114610017519215411514310410912713110110511115012213410311980
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.60.025.721.234.20.025.316.933.128.027.326.925.322.924.229.725.222.523.326.428.828.727.728.127.924.2

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302010-04-032009-04-04
Value53200138144108185141155111-3531367573
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.50.023.924.121.20.024.426.121.1-51.424.120.522.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value29-52211744-2213528-26710-1920-1921-205724-199712-1471118-27171-16-25-17
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-130-564035143442551310895-131-110-119-135-131-107-902-108-127-62-161-121-79-116-114-101
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.00.07.058.684.50.08.952.1168.8-19.2-19.5-27.9-23.9-28.7-23.8-21.00.5-24.0-28.3-15.0-30.9-28.3-16.4-31.6-26.8-30.4

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-29
Value31082697394343170615790823472685543794465552571607
Percentage of PaymentsToAcquireInvestments100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value32-211-366-571-723-493-256-364-1006-24-17-40-2-8-18-34-13-16-24-11-22-27-1-18-50-14
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.10.0-63.5-95.4-140.70.0-44.3-61.1-189.6-3.5-3.0-9.4-0.4-2.0-4.1-8.0-2.5-3.7-5.4-2.9-4.3-6.4-0.3-5.0-11.7-4.2

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value315325599000000135045404511040120452606610304089565305087504024202131594
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value1000390000010075013100006001001022351015860100310182121726-132-156-46
Percentage of RepaymentsOfLongTermDebt100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value1965595805767534982632702828679898395799175769292755569101606310368727351-105-368-63
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value1000390000010075013100006001001022351015860100310182121726-132-156-46
Percentage of RepaymentsOfLongTermDebt100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-04
Value0.074-0.0100000000000000090.1610.1590.071-0.0259999999999999950.1670.1080.1080.2030.8670.1150.1150.110.070.00400000000000000360.1420.1190.1180.00100000000000000090.1030.1460.153-0.020999999999999990.1360.1390.150.0430000000000000030.130.147-0.171-0.0930.1440.1450.151-0.0060000000000000050.1680.140.16-0.00100000000000000090.0580.1710.1620.00100000000000000090.1920.174
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value111111112
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value168.25158.61154.44154.4154.42142.47135.94134.95124.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value215.62238.52238.52238.52238.52208.47208.47208.47194.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice128.2150.4154.4154.5154.5146.3153.4154.5156.1

srt:Minimum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value99.4761.6338.0961.6361.6338.0938.0938.0938.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice59.138.924.739.939.926.728.028.230.6

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value105000.02000.01000.05000.078000.00.03000.01000.087000.01000.00.0105000.0135000.00.0129000.00.00.00.0134000.0141000.03000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.00.00.00.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value58000.00.00.01000.012000.024000.00.01000.015000.020000.00.020000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod55.20.00.020.015.40.00.0100.017.22000.00.019.0

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value999999999912881588888878777777676667
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042008-12-312007-12-31
Value2727272626262465578991011131418192019212223242627336471717273737372716978777776757768
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value000002000
Percentage of UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302019-01-01
Value9093859194100
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012016-12-312015-12-31
Value390335404587684796689742716642603567505487
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Sale Of Short Term Investments

us-gaap:AdjustmentForAmortization



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-29
Value1313131212121212121111101111111111121211
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-04
Value9999999999912129888815888888887877777766676666677
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

us-gaap:CostOfSales



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value570000.0598000.0531000.0567000.0575000.0516000.0488000.0603000.0603000.0605000.0781000.0726000.0726000.0787000.0738000.0680000.0731000.0656000.0671000.0600000.0668000.0648000.0674000.0671000.0633000.0672000.0756000.0568000.0630000.0657000.0668000.0684000.0716000.0
Percentage of AllocatedShareBasedCompensationExpense6.26.25.56.15.85.55.36.66.18.35.98.68.58.18.77.84.27.18.07.98.07.97.88.29.37.47.38.39.09.19.8

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value111111100000000001111111100001111
Percentage of AllocatedShareBasedCompensationExpense13.615.014.114.412.513.421.69.28.18.66.48.28.49.48.313.47.612.712.613.313.612.713.812.111.512.710.812.713.614.115.5

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-09-29
Value77778767787101077666136666666667655
Percentage of AllocatedShareBasedCompensationExpense80.278.880.479.581.781.173.184.185.883.087.783.283.182.583.078.888.280.279.478.878.579.478.479.779.279.981.978.977.574.7

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value1-22122001100
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfAcquisitionCosts



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value222222222221111111111222222222222
Percentage of AmortizationOfAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfDeferredCharges



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value131313121312121212131211111210111211111112111112121212
Percentage of AmortizationOfDeferredCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-06-302018-03-312017-09-302017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-10-032015-07-042015-04-042014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-10-022010-07-03
Value00000000000100100000001111100011
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value54-68-183-96-111106-5225743836
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value46-22-19-257-20-17-445
Percentage of ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value138-19-2394134-8-638147
Percentage of ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value82219577119449311
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:VariableRate

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

wat:SeniorUnsecuredNotesSeriesH, us-gaap:LondonInterbankOfferedRateLIBOR



Period End2020-03-28
Value0.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-2700123-4142-26-334210-1-5-211-7-30-42-2-2-41-1-10-134-1
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value-385000.0-132000.0-132000.0-132000.0-135000.0-165000.0-167000.0-171000.0-171000.0-177000.0-245000.0-248000.0-235000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-30
Value-5000.0-4000.0-5000.0-5000.0-5000.0-5000.0-4000.0-2000.0-2000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value-40000.05000.0-38000.0-37000.0-37000.0-15000.0-30000.0-32000.0-32000.0-31000.0-28000.0-47000.0-47000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit800.0-125.0760.0740.0740.0300.0750.01600.00.00.00.00.0

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302017-12-312017-09-302017-07-01
Value219000.0175000.0177000.0177000.0177000.0176000.0177000.0175000.0175000.0147000.0146000.0147000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value456000.0538000.0535000.0538000.0543000.0532000.0486000.0481000.0481000.0493000.0438000.0434000.0414000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets208.2307.4302.3304.0306.8302.3274.6274.90.0298.0297.3281.6

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302017-12-312017-09-302017-07-01
Value176000.0194000.0194000.0230000.0159000.0159000.0159000.0162000.0162000.0154000.0155000.0159000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value345000.0444000.0426000.0430000.0434000.0457000.0406000.0416000.0416000.0428000.0406000.0386000.0368000.0
Percentage of DefinedBenefitPlanInterestCost196.0228.9219.6187.0273.0287.4255.3256.80.0263.6249.0231.4

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302017-12-312017-09-302017-07-01
Value103000.0140000.0136000.0156000.0119000.0119000.0120000.0136000.0136000.0143000.0146000.0182000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value1211111111111
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost1294.21922.9783.8680.8900.01192.41140.01039.00.01186.71002.7759.3

us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302017-12-312017-09-302017-07-01
Value151000.0125000.0124000.0108000.0142000.0141000.0142000.0151000.0151000.0136000.0137000.0170000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value1111111111111
Percentage of DefinedBenefitPlanServiceCost727.8880.8871.8995.4762.0953.2923.2886.80.0941.2956.9729.4

us-gaap:Depreciation



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value151113161213141416151412121212117171281099810997988888
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeGainOnDerivative

us-gaap:CrossCurrencyInterestRateContract, us-gaap:InterestIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value3322210
Percentage of DerivativeGainOnDerivative100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value06-5-32-75-21829
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignExchangeContract, us-gaap:CostOfSales



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-12-3-20-30-4001
Percentage of GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxHolidayAggregateDollarAmount



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-02
Value29654787677574
Percentage of IncomeTaxHolidayAggregateDollarAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxHolidayIncomeTaxBenefitsPerShare



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-02
Value0.040.139999999999999990.079999999999999990.070.060.099999999999999980.090.10.070.079999999999999990.090.060.089999999999999970.05
Percentage of IncomeTaxHolidayIncomeTaxBenefitsPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationDeductionsOther



Period End2020-03-282019-03-302018-12-312018-09-292018-06-302018-03-312017-07-012017-04-01
Value27321647
Percentage of IncomeTaxReconciliationDeductionsOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-1510923-332-15-43-242611-5036-4323-25-1795-11-3191-451902-210-261513-11-24
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-5480-56-598403-4077-11-3571-3856-245351-30573-9-1645010-1622-1722-6-45
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value-27-519-4-60-112111-33-1430371126-210-181-3-4-20
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value91-11-23-6-2318-2853-450512917-6-1730-7-21-11-520643-1-9-5
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value54-583-852133341-1201-32-18-1132042010-2-3-491
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest



Period End2020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value4433558810998891099887765443222211110111110000000000000
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification



Period End2020-03-282018-12-312018-09-292018-06-302018-03-31
Value0000-3
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification100.00.00.00.0100.0

us-gaap:StatementClassOfStock

us-gaap:RetainedEarnings



Period End2020-03-282018-12-312018-09-292018-06-302018-03-31
Value0000-3
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification100.00.00.00.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-04
Value-196-4-77-185-47-4723626263829-542-3116-17-1021-64-45-4852613270-28723-3117-22-31932-1239-28-23-6929
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value-180-4-6977-442110273829-601-2818-19-820-59-68-4962631281-28324-30
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value-180-4-6977-4421
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-07-01
Value-180-4-6977-44-4421102738
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0-5000250
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-2.1-5440.9-9.3-0.40.1319.77.7

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-180-4-6977
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-196-4-77-185
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent102.15485.5109.1109.080.6-234.574.7

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-03-302012-12-312012-09-292012-06-30
Value0900060000-900106001000-2330000800
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value07000-390-1-10-11000050-10000-332000-2800060-1
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value05000-250-1-10-600003000-100-222000-17000400
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value01000-140000-400001000100-110000-11000200
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-06-302018-03-312017-12-312017-09-302017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value0100046000010000000011001000000020
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromDerivativeInstrumentFinancingActivities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-29
Value-2-3-2-2-2404-10-2101230000
Percentage of PaymentsForProceedsFromDerivativeInstrumentFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromProductiveAssets



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-31
Value515345392531272015301917222427212026222125313030312631153416151013
Percentage of PaymentsForProceedsFromProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value1119422710710242414383823113025353316117724141414738100
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-29
Value10874044865555096741085513700750446512482759421451540512
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-312009-04-04
Value3-1212302-110000000120000000011020
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value11000.03000.08000.04000.06000.06000.06000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value3000.01000.01000.0-1000.00.02000.03000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod27.333.312.5-25.00.033.350.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value185.65-1.12999999999999551.62999999999999555.2899999999999928.3600000000000140.8099999999999881117.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value281.393.3899999999999864-11.7100000000000080.00.06.619999999999976181.83
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue151.6-300.0-718.40.00.0817.3155.1

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value235.060.00.00.0183.410.0-0.9600000000000080.0195.69-0.42000000000001594.090000000000003136.43130.350.0113.880.00.00.099.220.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.00.00.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.00.00.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value206.73-0.6399999999999864-0.3300000000000125-2.240000000000009238.520.0-0.4099999999999966-0.21000000000000796208.470.289999999999992040.0800000000000125154.08117.680.0118.750.00.00.0112.593.0300000000000010.1799999999999926
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue87.90.00.00.0130.00.042.70.0106.5-69.02.0112.990.30.0104.30.00.00.0113.50.00.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value190.450.00.0-18.529999999999973391.21-17.8100000000000020.0-14.199999999999989267.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue81.00.00.00.0213.30.0-0.00.0136.8

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-28
Value85000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-28
Value37000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod43.5

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-28
Value161.44
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-28
Value184.51
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue114.3

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-02
Value0.0140.00.00.00.0250.00.00.00.0270.00.00.0220.0040.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value0.0130.00.00.00.0240.0040.00.00.020.00100000000000000090.00.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate92.90.00.00.096.00.00.00.074.10.00.068.2

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-02
Value0.2650.00200000000000000180.00.00100000000000000090.2420.020999999999999990.00.00.232-0.0030000000000000027-0.00200000000000000180.232-0.038999999999999980.286
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value0.2510.00.00.00.235-0.0140000000000000120.00.054000000000000020.18-0.023000000000000020.00.232
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate94.70.00.00.097.1-66.70.00.077.6766.7-0.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282018-12-312018-09-29
Value170.120.56.030000000000001-0.199999999999988630.0899999999999892
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282018-12-312018-09-29
Value208.470.044.260000000000020.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice122.50.0734.0-0.00.0

srt:Minimum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282018-12-312018-09-29
Value128.930.00.00.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice75.80.00.0-0.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value227000.07000.00.03000.0136000.0174000.07000.07000.0133000.0172000.010000.0207000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-31
Value61.7-0.100000000000001420.0-0.1199999999999974461.971.8999999999999986-0.269999999999996-0.1200000000000045558.385.2399999999999950.1000000000000014240.392.809999999999995
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value125.761.95000000000000281.04000000000000631.5108.570.4800000000000041.3499999999999943
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value208.470.00.00.0208.470.00.0
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice165.80.00.00.0192.00.00.0

srt:Minimum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value61.630.00.00.038.090.00.0
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice49.00.00.00.035.10.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value216.08-0.93000000000000680.0-0.7800000000000011232.08-8.590000000000003-0.5999999999999943-0.6899999999999977206.6619.01.5149.74
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value235.060.00.00.0238.520.00.0
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice108.8-0.00.0-0.0102.8-0.0-0.0

srt:Minimum, us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value203.370.00.00.0183.410.0-4.360000000000014
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice94.1-0.00.0-0.079.0-0.0726.7

us-gaap:Range, us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

srt:Maximum, wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282018-12-312018-09-29
Value2.00.00.00.00.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage100.00.00.00.00.0

us-gaap:StandardProductWarrantyAccrualPayments



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-31
Value21112-121215-2-2-2-2-2-2-2-2-1-1-2-1-1-2-1-2-2-1-2-1-2-1-1
Percentage of StandardProductWarrantyAccrualPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-012016-12-312016-04-022015-12-312015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-04-022010-12-312010-04-032009-12-31
Value12121-1211221212122113112121132211
Percentage of StandardProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value9000.010000.08000.015000.010000.011000.010000.014000.010000.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value133000.01000.01000.01000.0104000.012000.08000.01000.0123000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockOption



Period End2020-03-282019-12-312019-09-282019-06-292019-03-30
Value81000.0150000.017000.00.0239000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.00.0100.0

us-gaap:StatementClassOfStock

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value81000.0150000.019000.00.0239000.081000.052000.083000.0222000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0111.80.0100.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value121212121
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value121212121
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value999999999
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value999999999
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value2000.00.01000.00.01000.00.00.00.02000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value1017202685822
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value1017202685822
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:CommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value1000.01000.01000.00.02000.01000.01000.01000.02000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.00.00.00.00.00.00.00.00.0

us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockSharesAcquired

wat:January2019Program



Period End2020-03-28
Value11
Percentage of TreasuryStockSharesAcquired100.0

wat:ProgramsAuthorizedByBoardOfDirectors



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-04-042014-09-272014-06-282014-03-29
Value022232111000000
Percentage of TreasuryStockSharesAcquired7.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312011-12-312011-04-02
Value1765615885617555212632702827867
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

wat:January2019Program



Period End2020-03-28
Value2500
Percentage of TreasuryStockValueAcquiredCostMethod1418.6

wat:ProgramsAuthorizedByBoardOfDirectors



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-04-042014-09-272014-06-282014-03-29
Value167600600553747491263271275857985779286
Percentage of TreasuryStockValueAcquiredCostMethod94.8106.8102.098.598.994.299.8100.197.40.00.00.00.00.00.0

wat:RelatedToVestingOfRestrictedStockUnits



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-04-042014-09-272014-06-282014-03-292013-09-28
Value9000811082160070
Percentage of TreasuryStockValueAcquiredCostMethod5.10.00.00.01.10.20.40.02.80.00.00.00.00.00.00.0

us-gaap:StatementClassOfStock

us-gaap:TreasuryStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value176561588561755521263270282
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value101000.088000.068000.062000.043000.0247000.0-2000.0108000.083000.0
Percentage of UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-06-302018-03-312017-09-302017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-10-032015-07-042015-04-042014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-10-02
Value0000000000000000000001111111111
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

wat:CorrelationCoefficient

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value0.3660.00.00.00.342-0.0130000000000000120.0-0.00200000000000000180.374-0.007000000000000006
Percentage of CorrelationCoefficient100.00.00.00.0100.0100.00.0100.0100.0100.0

wat:PercentagePointChangeInEffectiveTaxRateRelatingToInfrequentIncomeTaxItems



Period End2020-03-282019-03-302018-09-292018-06-302018-03-312017-04-01
Value-0.071-0.0290.0520.0564.7-6.3
Percentage of PercentagePointChangeInEffectiveTaxRateRelatingToInfrequentIncomeTaxItems100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

wat:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-04-01
Value0.2610.00.00.00.2620.00100000000000000090.00.00.258-0.00500000000000000440.00.261
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies100.00.00.00.0100.0100.00.00.0100.0100.00.0100.0

us-gaap:StatementGeographical

wat:StatutoryTaxRate

country:GB



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.190.00.00.00.190.00.00.00.19
Percentage of StatutoryTaxRate100.00.00.00.0100.00.00.00.0100.0

country:IE



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.1250.00.00.00.1250.00.00.00.125
Percentage of StatutoryTaxRate65.80.00.00.065.80.00.00.065.8

country:SG



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.170.00.00.00.170.00.00.00.17
Percentage of StatutoryTaxRate89.50.00.00.089.50.00.00.089.5

country:US



Period End2020-03-282019-12-312019-09-282019-06-292019-03-30
Value0.210.00.00.00.21
Percentage of StatutoryTaxRate110.50.00.00.0110.5

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignExchangeContract, us-gaap:CostOfSales



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value100-3000000-1
Percentage of UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:OtherComprehensiveIncomeLocation

us-gaap:CrossCurrencyInterestRateContract, us-gaap:OtherComprehensiveIncome



Period End2020-03-282019-03-302018-12-312018-09-29
Value5700
Percentage of UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet416.81353.632.9-15340.0

us-gaap:AccruedIncomeTaxesNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-312014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value3943943933934314304294174574561020222324251921222470717272777778777574727280
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccruedLiabilitiesCurrent

us-gaap:TreasuryStock



Period End2020-03-282019-12-312019-03-302018-12-31
Value0202523
Percentage of AccruedLiabilitiesCurrent0.0100.0100.0100.0

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-31
Value19471926189718831872183418151798177917451710168316531607154115151490145114391414139213461336132212701223119611731155113611281117108910511041996970884843808
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312015-12-31
Value1298877666665554
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012010-12-31
Value443650253563103415561714298120061949186317631694162515801494140613691311123012251171109210611000746
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312015-12-31
Value2930323333373635353332323035
Percentage of AssetsFairValueDisclosure66.383.165.613.23.22.42.10.01.20.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value146172191001151816772026294628422726260124322265223321051763
Percentage of AssetsFairValueDisclosure33.716.934.486.896.897.697.90.098.80.00.00.00.00.00.00.0100.0

us-gaap:AvailableForSaleSecuritiesAmortizedCost



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value3102185221002152116822033294928422725260224342221217420431700
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:BankTimeDeposits



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value3105752108179238371
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.026.510.010.811.814.212.6

us-gaap:InvestmentType

us-gaap:ShortTermInvestments



Period End2020-03-282019-12-312019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value31874829411398151118422755
Percentage of AvailableForSaleSecuritiesAmortizedCost100.087.040.292.494.091.989.890.693.4

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value31021143779710431002122617221574159114561388125112141137872
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value310218522999133814391724257424392428229522322058206819661635
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

wat:AndrewAlliance, us-gaap:SubsequentEvent



Period End2020-01-31
Value80
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0

us-gaap:CashCashEquivalentsAndShortTermInvestments



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012010-12-31
Value394337405676116717352084224825523394325531262966281326002505239923112209210920551946191818531804169916501590153914481392130712811130901
Percentage of CashCashEquivalentsAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:LegalEntity

wat:ForeignSubsidiary



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value221249303421411471942116516563326
Percentage of CashCashEquivalentsAndShortTermInvestments56.173.974.862.335.227.145.251.864.998.0

us-gaap:InvestmentType

wat:InvestmentsHeldInCurrenciesOtherThanUSDollars



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value156176235256263251341324304
Percentage of CashCashEquivalentsAndShortTermInvestments39.652.258.037.922.514.516.414.49.0

us-gaap:ContractWithCustomerLiability



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value269213235260261204224240247192210173170
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value5138384039393826
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndCapitalLeaseObligations



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312013-12-31
Value1895168113551148114811481148114812471997195719121867182717561718166816301560148514651323
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility

us-gaap:DebtInstrumentCarryingAmount

wat:CreditAgreement



Period End2020-03-282019-12-312018-12-31
Value940625590
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0

us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

us-gaap:NotesPayableToBanks



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value85812001500120812081208120812081148498338383428468538328428533
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongtermDebtType

us-gaap:DebtWeightedAverageInterestRate

wat:CreditAgreementsAndUnsecuredDebt



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value0.0290.03390.03620.03740.0380.03830.03640.03590.03510.02980.02820.02790.02680.02550.0240.02160.02110.0231
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value4441111222
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear

srt:Maximum



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-30
Value6666661010
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-30
Value33333354
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear50.050.050.050.050.050.050.040.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetNotionalAmount

us-gaap:OtherAssets, us-gaap:CrossCurrencyInterestRateContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-29
Value560560410410300150
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value69119243111237110
Percentage of DerivativeAssetNotionalAmount12.421.45.97.637.425.30.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CrossCurrencyInterestRateContract



Period End2020-03-282019-12-312019-09-282019-06-292019-04-302019-03-302018-12-312018-07-31
Value560560110110110300300150
Percentage of DerivativeAssetNotionalAmount100.0100.026.826.80.00.0100.00.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherAssets, us-gaap:CrossCurrencyInterestRateContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-29
Value10416110
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value1000000
Percentage of DerivativeFairValueOfDerivativeAsset10.30.40.414.946.015.10.0

us-gaap:DerivativeInstrumentRisk

us-gaap:CrossCurrencyInterestRateContract



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value104161710
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.00.0100.0100.0

us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value10000000
Percentage of DerivativeFairValueOfDerivativeAsset10.30.40.414.90.046.015.10.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CrossCurrencyInterestRateContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-29
Value10416110
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value1000000
Percentage of DerivativeFairValueOfDerivativeAsset10.30.40.414.946.015.10.0

us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:CrossCurrencyInterestRateContract, us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-10-416-1-7-10
Percentage of DerivativeFairValueOfDerivativeAsset-100.0-100.0100.0-100.00.0-100.0-100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value0100000
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value01000000
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForeignExchangeContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value0100000
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilityNotionalAmount

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeContract



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292017-12-31
Value24291211244010537
Percentage of DerivativeLiabilityNotionalAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value224333363164393631694234295735305439242847343026433026243126262749393228523831323743
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisObligations



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value222222333
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value222222333333334443
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisObligations100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-31
Value551544526527513505502486495472456435407390384381359357344328341340343333322310291279275263247250239241247236222219200205
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LicensingAgreements



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value555554444444433443
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.91.01.01.01.01.01.01.01.01.01.01.01.01.01.01.11.11.1

us-gaap:SoftwareDevelopment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value338333320323311307306294302285273257235223221219204196
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization61.461.260.861.260.660.861.060.561.160.459.959.057.857.257.557.756.857.5

wat:PatentsAndOtherIntangibles



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value555452515149484645434240373634333126
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization10.010.09.99.710.09.79.69.69.39.39.39.39.39.39.08.98.97.8

wat:PurchasedIntangibles



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value152151149148145144143140141138136133129127124123119112
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization27.727.828.328.228.428.528.528.928.629.429.930.631.932.532.532.433.232.9

us-gaap:IntangibleAssetsGrossExcludingGoodwill



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012016-12-312016-07-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282012-12-31
Value794784764771756752755704727701680654597601577579567541574581580571561540495
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LicensingAgreements



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value5555555565
Percentage of IntangibleAssetsGrossExcludingGoodwill0.70.70.70.70.80.70.80.80.80.8

us-gaap:SoftwareDevelopment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value487481464471456454455442460438
Percentage of IntangibleAssetsGrossExcludingGoodwill61.461.460.861.160.360.360.362.863.362.6

wat:PatentsAndOtherIntangibles



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value82838079797777757472
Percentage of IntangibleAssetsGrossExcludingGoodwill10.310.610.610.310.610.310.210.610.310.4

wat:PurchasedIntangibles



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value206200199201201201203167171169
Percentage of IntangibleAssetsGrossExcludingGoodwill25.925.526.126.126.626.826.923.823.624.2

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

wat:TrademarksAndInProcessResearchAndDevelopment



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value13131313131313131413
Percentage of IntangibleAssetsGrossExcludingGoodwill1.71.81.81.81.81.81.82.01.92.0

us-gaap:InventoryFinishedGoodsNetOfReserves



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-31
Value196178221213195164182175176155177175170150174172153165159152144160164156146154149144140152145140128145144130123120110106
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-31
Value12812612612011911111210710499999591959492889492858489888876817673737572717178767263676257
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032009-12-31
Value19152017181518161815201617161821202121191619202119201717161918211221222017191815
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012010-12-31
Value333232443444430000000011100
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value01000000000000000
Percentage of LiabilitiesFairValueDisclosure21.128.722.69.78.318.319.80.05.30.00.00.00.00.00.00.015.3

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-31
Value222222333333334443
Percentage of LiabilitiesFairValueDisclosure78.971.377.490.380.791.781.780.20.094.70.00.00.00.00.00.00.084.7

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312014-12-312012-12-312011-12-31
Value105105105106909090909291908281791011009788107109
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtFairValue

wat:FixedInterestRate, us-gaap:UnsecuredDebt



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-31
Value91010001000512502495499501608
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1



Period End2020-01-01
Value1000000.0
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-30
Value2727232526
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-30
Value6366616667
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0

us-gaap:OtherAssetsFairValueDisclosure



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value293032333333373635
Percentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-282019-12-312019-09-282019-06-292018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312015-12-31
Value2930323333373635353332323035
Percentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.0

us-gaap:RevenueRemainingPerformanceObligation



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value218176197220222164224240166
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292012-12-31
Value269000.0260000.0261000.0269000.0274000.0304000.0324000.0334000.0340000.0374000.0402000.0413000.0416000.0453000.0489000.0497000.0497000.0527000.0512000.0517000.0533000.0568000.0572000.0577000.0642000.0504000.0512000.0574000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value123000.0105000.0106000.0107000.0112000.0100000.075000.075000.076000.064000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber45.740.440.639.840.932.923.122.522.417.1

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292012-12-31
Value200.61184.7184.27183.77182.98153.31150.75149.63148.85124.81123.15123.06122.99110.34109.61109.63104.16103.85103.03102.9794.3894.5794.5394.4782.1677.6377.4467.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value226.44233.11233.03232.79231.5212.34209.0209.0210.94196.29
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue112.9126.2126.5126.7126.5138.5138.6139.7141.7157.3

us-gaap:StandardProductWarrantyAccrualCurrent



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value11111111111212121213121313
Percentage of StandardProductWarrantyAccrualCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockShares



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-31
Value999895939087848381808079797877767675747473727271706969686766656463626060595857565450
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

wat:RealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignExchangeContract, us-gaap:CostOfSales



Period End2020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-22-300-40-4102
Percentage of RealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:StockholdersEquity us-gaap:StatementClassOfStock


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:StockholdersEquity us-gaap:StatementClassOfStock