WAT


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

Table of contents



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

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService

us-gaap:CostsAndExpenses

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementClassOfStock
us-gaap:SubsequentEventType
us-gaap:OtherIncome

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss

us-gaap:ResearchAndDevelopmentExpense

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

us-gaap:SellingGeneralAndAdministrativeExpense

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:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent
us-gaap:StatementEquityComponents
us-gaap:AccruedLiabilitiesCurrent

us-gaap:DebtCurrent
us-gaap:DebtInstrument

us-gaap:LiabilitiesCurrent

us-gaap:NotesPayableCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:BalanceSheetLocation

us-gaap:OtherLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt

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

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:BalanceSheetLocation

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

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

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage

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:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet
us-gaap:ValuationAllowanceByDeferredTaxAsset

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:ValuationAllowanceByDeferredTaxAsset

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

us-gaap:AccountsReceivableChangeInMethodCreditLossExpenseReversal

us-gaap:AdjustmentForAmortization

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AmortizationOfAcquisitionCosts

us-gaap:AmortizationOfDeferredCharges

us-gaap:AssetImpairmentCharges
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

us-gaap:ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:DebtInstrument, us-gaap:VariableRate
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
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:StatementGeographical, us-gaap:TaxPeriod, wat:Agreement
us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

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

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:BusinessAcquisition
us-gaap:ImpairmentOfIntangibleAssetsFinitelived

us-gaap:IncomeTaxHolidayAggregateDollarAmount

us-gaap:IncomeTaxHolidayIncomeTaxBenefitsPerShare

us-gaap:IncomeTaxReconciliationDeductionsOther

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InvestmentIncomeInterest

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

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:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:ProductOrService, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions
us-gaap:LitigationStatus
us-gaap:ProceedsFromLegalSettlements

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringAndRelatedCostIncurredCost
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:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
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
us-gaap:LongtermDebtType
wat:DebtInstrumentInterestCoverageRatio

wat:EarningsPerShareDilutedAdjustment

wat:EffectiveTaxRateReconciliationDeductionsRestructuringCharges
us-gaap:IncomeStatementLocation
wat:GuaranteedPaymentsReceived

wat:IntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationAdjustments

wat:IntangibleAssetsGrossForeignCurrencyTranslationAdjustments

wat:PaymentsToAcquireUnaffiliatedCompanies
us-gaap:DebtInstrument, wat:PrepaymentPeriod
wat:PercentageOfPrepaymentOfAggregatePrincipalPortionOfDebt
us-gaap:AwardType
wat:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
us-gaap:DerivativeInstrumentRisk, us-gaap:OtherComprehensiveIncomeLocation

dei:EntityPublicFloat

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

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

us-gaap:AvailableForSaleSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument
us-gaap:InvestmentType

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

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers

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

us-gaap:ContractWithCustomerLiability
us-gaap:BalanceSheetLocation
us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:CreditFacility
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount
us-gaap:LongtermDebtType
us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsEquityMethodInvestments

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInventory
us-gaap:ValuationAllowanceByDeferredTaxAsset
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:Range
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation
wat:DefinedBenefitPlanType
wat:DefinedBenefitPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
wat:DefinedBenefitPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:InvestmentType, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:InvestmentType, us-gaap:RetirementPlanType
us-gaap:InvestmentType, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetNotionalAmount
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:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

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

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

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

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:StandardProductWarrantyAccrualCurrent
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
wat:StockRepurchaseProgram

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

wat:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughThreeYearsFairValue
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
wat:BusinessCombinationAccruedExpensesAndOtherLiabilities
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
wat:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsReceivableAndCurrentOtherAssets
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
wat:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseAssets
us-gaap:BusinessCombinationSeparatelyRecognizedTransactions
wat:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNetOfAccruedExpensesAndOtherLiabilities
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:InvestmentType, us-gaap:RetirementPlanType
wat:ComponentsOfPlanAssetCategories

wat:DeferredTaxAssetsNetOperatingLossCarryForwardsAndCredits

wat:DeferredTaxAssetsOperatingLeaseAssets
us-gaap:ValuationAllowanceByDeferredTaxAsset
wat:DeferredTaxAssetsOperatingLossCarryforwardsForeignNotSubjectToExpiration
us-gaap:ValuationAllowanceByDeferredTaxAsset
wat:DeferredTaxAssetsOperatingLossCarryforwardsForeignSubjectToExpiration

wat:DeferredTaxLiabilitiesOperatingLeaseAssets

wat:EmployeeStockPurchasePlanTotalNumberOfSharesPurchased
us-gaap:PropertyPlantAndEquipmentByType
wat:EstimatedPurchasePriceOfBuildingAndEquipment

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

wat:RevenueRemainingPerformanceObligationCurrentAndNoncurrent

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Income Tax Holiday Income Tax Benefits Per Share
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
InventoryNet
Inventory Work In Process Net Of Reserves
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:CommonStockValue █▆▁1.621.6191.617NA1.614NA1.613NA1.6131.61NA1.609NA1.608NA1.6081.605NA1.6041.6031.6021.5981.5961.594NA1.592NA1.5861.5861.5811.5791.5771.5731.5721.571.5671.5621.5611.561.5521.5461.5431.5411.5371.5351.5341.5341.5281.5241.5231.5171.511NANANA1.488NANANA
 us-gaap:SharesIssued us-gaap:StatementClassOfStock us-gaap:CommonStock█▅▁162.017161.859161.666NA161.381NA161.273NA161.253161.03NA160.869NA160.841NA160.825160.472NA160.368160.298160.2159.845NANANANANA158.634NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇████62.15762.63262.50162.30362.30362.18462.18462.62662.62664.34866.76866.76869.49469.49472.41572.41575.34577.13677.13678.43879.71579.45480.52180.75680.75680.76980.76980.95481.38881.45581.97482.38282.78483.33283.75284.01584.40185.17785.87386.01786.36486.57687.21587.85188.45189.38190.26990.56692.0693.27193.31393.34493.28694.27895.22396.11196.51396.99697.927
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇███61.68562.2662.1762.00262.00261.94461.94462.23262.23263.79566.22666.22668.98968.98971.70471.70474.80276.57576.57577.83378.88379.45479.71279.97979.97980.07380.07380.36680.67780.80481.27581.6582.03682.56483.02583.21783.66384.46284.97785.00685.18585.48286.04986.71287.41188.31788.99289.32490.68891.66291.64991.58391.71492.61293.62994.51695.23596.14797.304
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NA0.1NANA0.4NA0.7NA0.2NANA0.1NA0.1NA0.1NANA0.30.10.3NA0.20.4NA1.1NANA0.50.81.2NA0.60.50.6NA0.50.60.6NA0.71.31.4NA1.31.31.3NA0.70.70.7NA1.81.8NANANANANA
us-gaap:EarningsPerShareBasic ▇▇█▇▇▇▇▆▆█▇▇▇▇▆▆▇▇▇▇▆▁▆▆▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆2.712.383.512.042.041.981.980.860.863.152.092.092.092.091.521.522.481.841.842.01.42-4.441.711.651.651.321.322.171.551.591.161.851.421.281.161.821.361.140.83NANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareDiluted ▇▇█▇▇▇▇▆▆█▇▇▇▇▆▆▇▇▇▇▆▁▆▆▆▆▆▇▆▆▆▇▆▆▆▇▆▆▆2.692.373.492.032.031.981.980.860.863.122.072.072.082.081.511.512.461.831.831.981.4-4.441.691.631.631.311.312.151.531.571.151.831.41.271.151.81.341.130.82NANANANANANANANANANANANANANANANANANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
 COGS Ratio us-gaap:ProductOrService us-gaap:Product▄▁█440.955382.022531.991NA376.239NA314.92NA274.183488.848NA370.573NA387.265NA320.503498.485NA378.522388.869339.117479.665375.55372.838NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:Service240.692NA254.667NA217.545NA205.064NA190.756227.446NA206.705NA211.897NA193.359216.534NA199.499207.35191.553207.61190.034185.412NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
 TTM Greenblatt ROC _ _▆▅█▄▄▄▄▁▁▇▅▅▅▅▃▃▇▅▅▅▄▇▄▄▄▃▃▆▄▄▃▅▃▃▃▅▄▃▂▅▃▃▂▄▃▃▃▄▃▃▃▄▂▂▂▃196.422171.27263.711158.384158.384155.114155.11468.2868.28236.417173.235173.235177.654177.654121.151121.151244.532171.674171.674179.193144.375230.17159.034153.785153.882118.869118.72208.335151.731151.611112.662181.308135.843130.318119.982172.039138.713118.39588.761176.177119.069112.692109.405159.405121.745120.123110.217164.874127.264120.567115.895148.176103.815105.58492.357126.304NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:AllocatedShareBasedCompensationExpense ▁▅█7.2918.3059.15NA9.593NA8.926NA9.1969.66NA9.662NA9.314NA9.9419.357NA9.2139.0799.8929.36812.2749.139NA8.655NA8.3948.3678.39615.8418.4118.3478.1558.4558.5388.1078.2248.1297.7238.6787.8767.4317.4967.3067.1147.2676.9346.8826.7487.0156.2946.2446.2836.031NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▂▁█167.319154.864227.044NA126.983NA134.456NA34.616200.779NA133.648NA137.958NA118.313192.974NA148.122111.407133.387-342.812163.452170.584NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold NA95.271320.569262.342NA213.134NA210.644NA299.068241.055NA249.546NA221.031NA286.869241.139NA243.135221.421270.453235.892229.627229.627211.095211.095251.579218.344220.379201.151237.915206.804208.707189.246233.119202.222201.853187.719228.991191.568188.329174.568208.363182.702179.259167.29204.243180.318176.103169.829189.253162.985155.133145.932170.131153.143144.154127.454
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:Product▃▁█176.745158.876217.062NA166.33NA134.802NA119.839203.548NA149.793NA156.975NA132.39200.005NA155.825159.979140.466186.414155.621148.023NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:Service103.509NA103.507NA96.012NA78.332NA90.80595.52NA91.262NA92.571NA88.64186.864NA85.31483.15680.95584.03980.27181.604NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▇▅█▅▅▂▂▃▃▆▃▃▄▄▃▃▆▄▄▄▃▅▄▃▃▂▂▄▂▃▂▃▂▂▁485.225437.275522.947435.4435.4364.87364.87396.659396.659479.877404.043404.043421.508421.508392.711392.711470.487406.347406.347417.026386.295457.105406.55404.465404.368379.1379.249420.452375.099384.949362.584405.302364.735364.422340.422NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▅█▄▄▄▄▁▁▇▅▅▅▅▃▃▆▅▅▅▄▇▄▄▄▃▃▆▄▄▃▅▄▃▃▅▄▃▂▅▃▃▃197.414173.784257.251150.437150.437145.363145.36357.86357.863224.388164.738164.738171.735171.735117.378117.378197.806169.23169.23174.561140.549225.738153.8148.072148.072113.487113.487202.579145.45145.455106.63175.238129.562123.772113.347164.473131.413112.12482.73169.325112.657104.716103.407NANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▂▂▂▂▂▂▂▁▁▂▂▂▂▂▁▁▁▂▂▁▂█▁▁▁▁▁▂▂▁▁▂▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▂▁▁▁30.12225.65738.9423.66823.66822.43422.4344.3014.30123.71926.60526.60527.32527.3258.3928.39212.65428.21628.21618.88428.598578.9117.69616.2516.257.937.9328.20120.59417.23812.57824.18413.28118.11517.28613.18117.91615.59512.42827.74314.60915.402-17.652-22.91216.71316.55215.82921.53420.46116.25318.03618.2555.80217.48914.55420.58618.09714.7349.922
us-gaap:InterestExpense ▆▆▆▆▆▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▇██▇▇▇▇▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁▁▁12.02710.94611.05810.91510.91513.01813.01814.07914.07914.22311.45611.45611.44811.44811.56311.56311.67611.43511.43511.69213.83815.28114.7514.08314.08312.72512.72512.10211.70710.98310.1199.2059.0179.0468.9759.6699.0627.9717.4897.9277.3587.587.1857.5977.1076.8786.4916.6776.1595.0524.0833.8793.813.6212.6142.3432.8642.6493.13
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▇▇█▇▇▇▇▆▆█▇▇▇▇▇▇█▇▇▇▇▁▇▇▇▇▇▇▇▇▆▇▇▇▇▇▇▇▆▇▇▆▇167.292148.127218.311126.769126.769122.929122.92953.56253.562200.669138.133138.133144.41144.41108.986108.986185.152141.014141.014155.677111.951-353.172136.104131.822131.822105.557105.557174.378124.856128.21794.052151.054116.281105.65796.061151.292113.49796.52970.302141.58298.04889.314121.059NANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▃▁█167.292148.127218.311NA126.769NA122.929NA53.562200.669NA138.133NA144.41NA108.986185.152NA141.014155.677111.951-353.172136.104131.822NA105.557NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense NANA0.374-1.039NA-0.736NA-0.374NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▆▅█▄▄▄▄▁▁▇▅▅▅▅▃▃▇▅▅▅▄▇▄▄▄▃▃▆▄▄▃▅▃▃▃▅▄▃▂▅▃▃▂▄▃▃▃▄▃▃▃▄▂▂▂▃▂▂▂196.422171.27263.711158.384158.384155.114155.11468.2868.28236.417173.235173.235177.654177.654121.151121.151244.532171.674171.674179.193144.375230.17159.034153.785153.882118.869118.72208.335151.731151.611112.662181.308135.843130.318119.982172.039138.713118.39588.761176.177119.069112.692109.405159.405121.745120.123110.217164.874127.264120.567115.895148.176103.815105.58492.357126.30496.11286.69585.491
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▁▆█0.0276.7378.733NA0.214NA11.527NA-18.9460.11NA-4.485NA-6.452NA9.3277.822NA7.108-44.2721.43610.3627.34838.762NA29.743NA-60.8761.525-28.98218.779-19.91-8.54320.103-59.671-68.629-49.1586.62526.57831.05328.421.077-28.2763.09724.097-30.653NANANANANANANANANANANANANA
 us-gaap:OtherIncome us-gaap:SubsequentEventType us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ██▁9.3219.3590.374NA-1.039NA-0.736NA-0.374-2.223-0.496-0.496-0.342-0.342-0.525-0.525-45.501-0.811-0.811-1.8280.346-0.4040.012-0.097-0.0970.1490.149NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▃▁█167.292148.127218.311NA126.769NA122.929NA53.562200.669NA138.133NA144.41NA108.986185.152NA141.014155.677111.951-353.172136.104NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense █▆▇▅▅▄▄▅▅▆▅▅▆▆▅▅▆▅▅▆▅▅▅▅▅▄▄▅▄▅▄▄▄▄▄▄▃▃▃▃▂▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁44.94938.09239.66234.97134.97131.15531.15534.98934.98937.07234.33334.33336.4936.4935.0635.0638.10635.17335.17335.64434.4835.12233.78232.93732.93730.75230.75232.75330.41832.57829.43828.33630.70330.55528.95128.72427.27926.97724.74626.97523.59924.6525.31224.95823.75623.94323.34723.70723.37223.01422.25422.86720.52420.80720.07619.7919.3119.72218.332
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆▅█▅▅▄▄▃▃▇▅▅▅▅▄▄▇▅▅▅▄▆▅▄▄▄▄▆▄▄▃▅▄▃▃▅▃▃▃▅▃▃▃▄▃▃▂▄▃▃▂▃▂▂▂▂▂▁▁681.647608.545786.658593.784593.784519.984519.984464.939464.939716.294577.278577.278599.162599.162513.862513.862715.019578.021578.021596.219530.67687.275565.584558.25558.25497.969497.969628.787526.83536.56475.246586.61500.578494.74460.404583.87493.165481.801430.508565.448457.317451.115430.338521.766449.952451.465420.458521.42454.534447.627427.603483.578401.038391.055367.7428.848373.963362.837333.052
us-gaap:SellingGeneralAndAdministrativeExpense █▆▇▅▅▃▃▇▇▆▄▄▅▅▅▅▆▄▄▅▅▇▅▅▅▅▅▅▄▅▅▄▄▄▃▅▄▅▄▅▄▄▃▄▃▄▃▄▄▄▃▄▂▂▂▂▁▂▁158.213143.196153.084135.43135.43117.449117.449147.735147.735141.208126.036126.036133.208133.208134.339134.339142.853126.997126.997136.645130.407148.795135.194130.19130.093130.524130.673130.238123.861129.581129.351128.681124.655122.66119.751131.916122.226131.93126.635130.68120.563123.062118.66122.147115.322122.682117.119126.237121.211125.439117.124120.518111.306106.939106.693109.986102.675109.58399.159
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:Assets ▆█▁3103.6473211.5632839.92NA2679.286NA2648.302NA2666.5182557.055NA2561.265NA2822.922NA3249.7283727.426NA4043.0584157.7444489.4575324.3545162.9854996.745NA4810.703NA4662.0594576.7824448.0734368.3954268.6774121.2444028.8443872.7263877.9343751.6763727.533649.7353582.6293425.3193285.5293207.3173168.152997.142883.5562839.4162723.2342639.6152571.8562447.1622327.67NANANA1907.931NANANA
us-gaap:Liabilities ▅█▁2835.3742980.6012607.776NA2720.867NA2840.044NA3004.5172773.336NA2445.765NA2266.677NA2281.9862160.168NA2166.6262182.652374.5633090.5662533.892478.106NA2415.889NA2360.112317.6422298.7292266.7092209.8262152.6882096.2462010.4861983.2681909.8561884.0451830.3631819.4561806.6851765.4171730.8171700.7931667.2611620.8731551.8851496.6561480.5321346.3221296.3681258.873NANANA1058.982NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▆█▁3103.6473211.5632839.92NA2679.286NA2648.302NA2666.5182557.055NA2561.265NA2822.922NA3249.7283727.426NA4043.0584157.7444489.4575324.3545162.9854996.745NA4810.703NA4662.0594576.7824448.0734368.3954268.6774121.2444028.8443872.7263877.9343751.6763727.533649.7353582.6293425.3193285.5293207.3173168.152997.142883.5562839.4162723.2342639.6152571.8562447.1622327.67NANANA1907.931NANANA
us-gaap:StockholdersEquity █▁▁268.273230.962232.144NA-41.581NA-191.742NA-337.999-216.281NA115.5NA556.245NA967.7421567.258NA1876.4321975.0942114.8942233.7882629.0952518.639NA2394.814NA2301.9492259.142149.3442101.6862058.8511968.5561932.5981862.241894.6661841.821843.4851819.3721763.1731618.6341520.1121476.51467.3571329.8791262.6831287.5311226.5781159.0831225.5341150.7941068.797NANANA848.949NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:AssetsCurrent ▆█▁1638.551767.9231401.033NA1291.673NA1269.427NA1327.7761312.491NA1343.906NA1620.401NA2077.7912663.163NA2970.7693124.03438.5784270.1344078.5253947.235NA3778.424NA3635.4453534.373405.9363310.6193213.5333093.8473006.9572875.9732853.7362699.412680.6062607.7092556.2552429.0822344.2782287.6812257.7262137.4982065.2922023.4791942.1041863.3591800.0081683.3341586.641NANANA1172.376NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▂█▁460.056683.783436.695NA374.934NA339.036NA390.061335.715NA404.649NA587.998NA684.97796.28NA689.373742.204716.522642.319603.807567.255NA584.444NA505.631430.209463.382416.387487.665459.518365.875440.798422.177356.968428.691395.382440.796431.001455.045472.048481.035356.293369.429427.186383.99423.926344.914296.86308.498262.792310.884297.012341.111NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▂█▁460.056683.783436.695NA374.934NA339.036NA390.061335.715NA404.649NA587.998NA684.97796.28NA689.373742.204716.522642.319603.807567.255NANANA505.631NANANA487.665NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShortTermInvestments █▅▁203.566125.9866.451NA22.136NA16.72NA3.811.429NANANA87.775NA482.293938.944NA1394.8871506.2891835.3512751.3822651.152558.691NA2382.019NA2307.4012282.8062136.4042088.7811911.5981851.2161843.0181668.2471633.2111589.3891488.8691457.8131362.8741268.1061194.6771117.8061057.991092.1481022.708926.367897.361770.291776.763742.189637.921NANANA289.146NANANA
us-gaap:AccountsReceivableNetCurrent ▁▃█543.072550.677573.316NA494.432NA496.276NA522.209587.734NA504.865NA518.52NA508.285568.316NA489.193492.826502.968533.825456.334462.811NA461.755NA489.34441.768445.953439.578468.315416.311406.583394.37433.616393.169401.919401.406430.985373.844365.222377.412404.556362.371355.144353.746367.085354.445365.331349.397358.237NANANA314.247NANANA
us-gaap:InventoryNet █▅▁348.77327.967304.281NA326.946NA344.009NA344.009320.551NA368.79NA351.552NA333.308291.569NA313.614299.595299.614270.294297.854287.139NA279.976NA262.682303.183286.447287.048263.415281.786272.932257.53246.43269.095272.764266.629242.8256.98242.641235.883229.565246.994236.763233.362212.864246.258243.18223.882204.3NANANA178.666NANANA
us-gaap:OtherAssetsCurrent █▁▃83.08679.5180.29NA73.225NA73.386NA67.68767.062NA65.602NA74.556NA68.93568.054NA83.70283.08684.12372.31469.3871.339NA70.23NA70.39176.40473.7578.82582.5485.016118.549115.028118.30290.78988.36386.47978.899.15186.69384.53284.5879.69281.24882.81880.80468.43969.8271.00677.685NANANA49.206NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:PropertyPlantAndEquipmentGross NANA1128.139NANANANANANA987.661NANANANANANA871.868NANANANA838.359NANANANANA768.549NANANA704.528NANANA684.613NANANA659.349NANANA587.323NANANA518.081NANANA466.425NANANA437.891NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA125.925NANANANANANA57.985NANANANANANA41.909NANANANA22.14NANANANANA20.204NANANA20.477NANANA20.606NANANA80.42NANANA37.75NANANA20.56NANANA13.578NANANA12.347NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandAndLandImprovementsNANA36.884NANANANANANA37.04NANANANANANA36.554NANANANA37.525NANANANANA35.72NANANA38.735NANANA39.688NANANA37.156NANANA35.734NANANA34.665NANANA20.679NANANA20.688NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:OtherMachineryAndEquipmentNANA588.625NANANANANANA537.211NANANANANANA494.302NANANANA484.475NANANANANA438.604NANANA380.016NANANA367.716NANANA336.135NANANA317.285NANANA288.274NANANA268.421NANANA245.785NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType wat:BuildingsAndLeaseholdImprovementsNANA376.705NANANANANANA355.425NANANANANANA299.103NANANANA294.219NANANANANA274.021NANANA265.3NANANA256.603NANANA205.638NANANA196.554NANANA174.582NANANA163.747NANANA159.071NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA634.136NANANANANANA570.319NANANANANANA528.785NANANANA489.081NANANANANA431.431NANANA371.173NANANA363.03NANANA334.417NANANA314.044NANANA280.986NANANA251.365NANANA226.965NANANA
us-gaap:PropertyPlantAndEquipmentNet █▅▁527.135513.719494.003NA469.721NA459.173NA439.42417.342NA381.496NA368.878NA355.965343.083NA338.472335.709349.319349.278342.832338.86NA334.382NA337.118329.721330.235336.798333.355325.554324.896316.814321.583322.924328.598329.88324.932313.667295.741282.716273.279261.115251.357238.955237.095221.059218.637216.989215.06NANANA210.926NANANA
us-gaap:Goodwill ▃▁█439.826438.139444.362NA431.078NA427.492NA423.787356.128NA353.938NA355.89NA356.632355.614NA357.869357.507362.331359.819359.376357.122NA353.796NA352.08356.446352.987356.88356.864352.151353.34350.021354.838358.464354.079353.469350.35340.393315.215315.145316.834316.269306.77309.088297.071298.297294.02293.517291.657NANANA293.077NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▃▁█246.836240.853258.645NA255.168NA248.993NA243.389240.203NA237.61NA244.094NA243.415246.902NA252.834218.175231.733228.395224.056219.092NA211.049NA207.055221.619217.393223.364218.022222.806223.16213.108232.371241.654237.064238.258239.112230.774219.453214.993220.145212.87199.013205.355191.992196.305195.074191.432181.316NANANA182.165NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA13.667NANANANANANA26.933NANANANANANA28.199NANANANA21.887NANANANANA62.12NANANA65.93NANANA79.518NANANA82.243NANANA120.438NANANA80.012NANANA67.722NANANA39.896NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▂▁█88.87188.28393.252NA86.757NA88.619NA90.66493.358NA85.112NA91.06NA94.68NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▁162.429162.646148.625NA144.889NA154.598NA141.482137.533NA159.203NA142.599NA121.245118.664NA123.114122.353107.496116.728158.196134.436NA133.052NA130.361134.626141.522140.734146.903126.886120.491116.81115.406129.224127.183120.419111.98111.403110.842106.782100.16669.38861.12462.53954.97260.59564.11761.8952.996NANANA49.387NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:AccountsPayableCurrent █▇▁83.24981.51172.212NA60.357NA50.325NA61.05949.001NA64.805NA67.397NA72.36768.168NA65.8171.1970.64564.53766.75471.055NA66.929NA67.7467.76566.11573.2970.57361.7165.00763.95465.70460.26965.08673.1864.96162.75456.36859.78954.72460.25862.79261.46855.31764.39367.96767.40464.406NANANA49.573NANANA
us-gaap:AccruedIncomeTaxesCurrent ▁█▇52.58382.64276.558NA60.444NA87.841NA46.87545.967NA49.576NA38.517NA19.85422.943NA59.30464.425100.25973.00824.3551.405NA2.892NA15.24413.617.29610.77314.8945.38822.4119.40515.14314.6883.9593.55319.7739.71621.20327.8260.88820.71113.65820.059.44925.9598.4423.13211.909NANANA13.267NANANA
 us-gaap:AccruedLiabilitiesCurrent us-gaap:StatementEquityComponents us-gaap:TreasuryStock▁█5.07.0NANANANA0.0NA0.020.0NA18.0NA10.0NA25.023.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DebtCurrent NA100.0150.0NA150.0NA150.0NA50.0100.366NA100.058NA100.295NA100.2630.178NA0.2840.4990.354100.273225.423225.233NA225.285NA125.297125.176125.26125.499175.309175.176175.297175.316225.243225.006233.403232.104133.346133.761132.909133.232132.781447.703401.354323.616290.832271.578136.176390.34666.055NANANA131.772NANANA
 us-gaap:DebtCurrent us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesENANA0.05NA50.0NA50.0NA50.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtCurrent us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesFNA100.00.1NA100.0NA100.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▁▇█681.018785.049804.983NA722.188NA697.32NA551.051591.334NA597.153NA611.696NA603.279448.931NA448.125474.917534.348606.157662.149653.289NA632.211NA520.321519.501522.604524.03564.076535.954546.694538.471581.595574.479594.59584.448487.532492.904474.953476.866504.242767.562721.657648.283601.863605.579467.297716.229385.85NANANA394.568NANANA
us-gaap:NotesPayableCurrent NA100.0150.0NA150.0NA150.0NA50.0100.366NA100.058NANANANA0.178NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ▇▁█27.58326.90827.764NA26.745NA26.862NA27.99927.125NA23.936NA25.106NA26.926NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▃▁█173.746167.331197.093NA157.018NA125.448NA113.244137.084NA98.844NA101.749NA93.373115.832NA84.18985.86103.694119.449105.21799.986NA92.256NA92.34783.24384.51780.08393.79382.77275.85270.63285.33580.22984.87574.23185.13279.94783.11673.65690.11670.96971.7567.0573.13662.29167.12560.96372.932NANANA58.117NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:LiabilitiesNoncurrent ▇█▁2154.3562195.5521802.793NA1998.679NA2142.724NA2453.4662182.002NA1848.612NA1654.981NA1678.7071711.237NA1718.5011707.7331840.2152484.4091871.7411824.817NA1783.678NA1839.7891798.1411776.1251742.6791645.751616.7341549.5521472.0151401.6731335.3771289.4551245.9151331.9241313.7811290.4641253.9511196.551899.699899.216903.602894.793874.953879.025580.139873.023NANANA664.414NANANA
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us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent █▁▁74.79472.75672.62NA65.003NA62.499NA55.07859.159NA55.386NA55.825NA56.37655.853NA63.69667.63467.53367.33469.66672.381NA72.565NA72.56866.49370.76170.97377.06377.35383.11984.23985.2357.93659.87576.75474.723102.151101.822101.725101.22596.20197.059102.12692.9771.95276.43175.74272.624NANANA69.044NANANA
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us-gaap:OperatingLeaseLiabilityNoncurrent ▁▁█61.40461.50368.197NA62.471NA63.828NA63.61266.881NA61.372NA66.713NA67.788NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA10.951NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA8.269NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA16.864NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:StockholdersEquity █▁▁268.273230.962232.144NA-41.581NA-191.742NA-337.999-216.281NA115.5NA556.245NA967.7421567.258NA1876.4321975.0942114.8942233.7882629.0952518.639NA2394.814NA2301.9492259.142149.3442101.6862058.8511968.5561932.5981862.241894.6661841.821843.4851819.3721763.1731618.6341520.1121476.51467.3571329.8791262.6831287.5311226.5781159.0831225.5341150.7941068.797NANANA848.949NANANA
us-gaap:CommonStockValue █▆▁1.621.6191.617NA1.614NA1.613NA1.6131.61NA1.609NA1.608NA1.6081.605NA1.6041.6031.6021.5981.5961.594NA1.592NA1.5861.5861.5811.5791.5771.5731.5721.571.5671.5621.5611.561.5521.5461.5431.5411.5371.5351.5341.5341.5281.5241.5231.5171.511NANANA1.488NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▄▁2090.0522054.0762029.465NA1982.731NA1959.498NA1947.6261926.753NA1897.771NA1883.958NA1872.2161834.741NA1815.4281798.7081779.1421745.0881710.7831683.873NA1653.973NA1607.2411594.0991541.1571515.8331490.3421451.6011439.2291414.71392.4941346.4421336.0491322.4911270.6081223.3281196.1581173.2271155.5041136.4731128.5211117.21089.9591051.4931041.759996.675970.068NANANA808.345NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▄▁7423.4087256.1167107.989NA6889.678NA6762.909NA6639.986587.403NA6386.734NA6248.601NA6104.1915995.205NA5810.0535669.0395513.3625405.385758.5525622.448NA5490.626NA5385.0695210.6915085.8354957.6184863.5664712.5124596.2314490.5744394.5134243.2214129.7244033.1953962.8933821.3113723.2633633.9493512.893336.9463237.8373140.1133051.4472914.32813.0432712.9682618.479NANANA2236.716NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ██▁-111.179-111.206-117.943NA-126.676NA-126.89NA-138.417-119.471NA-119.581NA-115.096NA-108.644-117.971NA-125.793-132.901-88.631-110.067-120.427-147.775NA-186.537NA-216.28-155.404-156.929-127.947-146.726-126.816-118.273-138.376-78.705-10.07639.08232.4575.879-25.174-53.594-54.671-26.395-29.492-53.589-22.936-36.055-0.78332.49522.279-11.795NANANA15.574NANANA
us-gaap:TreasuryStockValue █▅▁9135.6288969.6438788.984NA8788.928NA8788.872NA8788.8018612.576NA8051.033NA7462.826NA6901.6296146.322NA5624.865361.3555090.5814808.2114721.4094641.501NA4564.84NA4475.6674391.8324322.34245.3974149.9084070.3143986.1613906.2283815.2033739.3293662.9313570.3313477.7593402.3773347.2583277.5463176.1793115.5833051.622948.382880.3012807.4512663.2862582.6452509.466NANANA2213.174NANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▅█143.04218.404267.482NA172.579NA198.811NA151.635191.895NA148.389NA127.024NA175.779181.549NA146.34100.716175.841192.184154.196NANANANANANANANANANANANANANANA115.755143.291104.765109.022127.798131.653101.353105.076111.198150.062127.33397.218122.761134.087108.942111.672103.155NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▁█-122.102-159.004-37.533NA-34.226NA-62.16NA-130.175-56.639NA40.378NA351.024NA434.039425.584NA51.336310.543895.839-131.764-110.136NANANANANANANANANANANANANANANA-119.949-135.363-131.403-107.51-90.4532.457-108.17-127.727-62.954-161.262-20.6-53.007-121.107-79.078-156.765-59.485-116.187NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▂-236.966188.775-172.534NA-108.602NA-192.284NA32.918-211.137NA-366.807NA-571.6NA-723.134-493.079NA-256.212-364.166-1006.065-24.375-17.208NANANANANANANANANANANANANANANA-40.299-2.531-8.981-18.495-34.581-13.139-16.859-24.542-11.995-22.469-13.2262.523-27.25-1.363-18.732-21.678-18.479NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁█▅-223.727247.08861.761NA35.898NA-51.025NA54.346-68.934NA-183.349NA-96.972NA-111.31106.907NA-52.83125.68274.20338.51236.552NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:DeferredIncomeTaxExpenseBenefit █▇▁3.322.787-3.782NA1.866NA1.748NA-2.5257.803NA0.185NA0.19NA1.4422.127NA3.27-4.0631.07142.464-2.162-0.96NA6.168NA-3.724.287-3.1033.744.761.279-2.2862.82810.734-1.239-5.694-2.21811.35-7.009-3.181-0.991-42.837-2.235-2.317-4.831.248-3.38-2.213-1.479-10.368-0.655-2.064-1.95NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▁▁█-11.04-7.94559.488NA-9.977NA-32.952NA-54.02680.092NA-5.389NA6.823NA-59.33184.814NA-0.3023.997-40.58877.371-11.413-6.835NA-35.11NA71.192-7.1535.936-38.25456.0097.3811.301-24.80253.0235.2821.277-30.14757.8183.381-9.467-16.49945.3420.42310.083-16.01222.568-2.84910.539-17.7322.5737.8616.6226.23NANANANA
us-gaap:IncreaseDecreaseInInventories ▇█▁20.32930.544-27.079NA-18.95NA-2.31NA29.399-52.119NA21.773NA17.762NA44.438-22.43NA13.9495.77628.101-26.9487.0488.696NA10.473NA-19.84114.9854.51520.488-19.2049.2938.50921.369-20.8285.2547.39524.163-19.3939.967.98212.84-14.9037.23111.2718.057-27.39710.18418.69817.3531.26510.6029.03516.134NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▅█143.04218.404267.482NA172.579NA198.811NA151.635191.895NA148.389NA127.024NA175.779181.549NA146.34100.716175.841192.184154.196NANANANANANANANANANANANANANANA115.755143.291104.765109.022127.798131.653101.353105.076111.198150.062127.33397.218122.761134.087108.942111.672103.155NANANANA
us-gaap:ProfitLoss ▃▁█167.292148.127218.311NA126.769NA122.929NA53.562200.669NA138.133NA144.41NA108.986185.152NA141.014155.677111.951-353.172136.104NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▁▅█7.2918.3059.15NA9.593NA8.926NA9.1969.66NA9.662NA9.314NA9.9419.357NA9.2139.0799.8929.36812.2749.139NA8.655NA8.3948.3678.39615.8418.4118.3478.1558.4558.5388.1078.2248.1297.7238.6787.8767.4317.4967.3067.1147.2676.9346.8826.7487.0156.2946.2446.2836.031NANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▁█-122.102-159.004-37.533NA-34.226NA-62.16NA-130.175-56.639NA40.378NA351.024NA434.039425.584NA51.336310.543895.839-131.764-110.136NANANANANANANANANANANANANANANA-119.949-135.363-131.403-107.51-90.4532.457-108.17-127.727-62.954-161.262-20.6-53.007-121.107-79.078-156.765-59.485-116.187NANANANA
us-gaap:PaymentsToAcquireInvestments ▆█▁92.5122.643.426NA5.63NA13.308NA3.521.428NA0.0NA8.791NA26.73297.933NA394.805343.301170.041615.12790.49731.434NA823.335NA472.978718.019519.467685.568543.29138.786533.87794.422465.11552.312571.703607.028NANANANANANANANANANANANANANANANANANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▂-236.966188.775-172.534NA-108.602NA-192.284NA32.918-211.137NA-366.807NA-571.6NA-723.134-493.079NA-256.212-364.166-1006.065-24.375-17.208NANANANANANANANANANANANANANANA-40.299-2.531-8.981-18.495-34.581-13.139-16.859-24.542-11.995-22.469-13.2262.523-27.25-1.363-18.732-21.678-18.479NANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁█▁0.0500.00.0NA0.0NA0.0NA315.0325.308NA599.999NA0.197NA0.1660.264NA-0.2160.1450.0811350.045.1945.0NA40.0NA45.12140.0290.0110.17740.14690.075.0120.07345.243260.00666.37110.05330.18640.852895.53965.63230.2550.13787.84350.09440.329261.06855.005242.1260.52546.57855.265213.273NANANANA
us-gaap:RepaymentsOfLongTermDebt ▁▄█100.0150.0215.0NA125.0NA200.0NA100.3660.0NA390.237NA0.165NA0.080.435NA0.0100.0750.01310.150.00.052NA0.012NA0.015.084250.23960.00.020.1210.019100.010.006223.4035.0721.2950.60115.0860.86210.1810.1723.78810.10518.04221.075125.6669.175217.83526.71311.19310.789132.663NANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ██▁168.202173.3050.056NA0.056NA0.071NA196.226559.558NA580.065NA576.53NA753.105498.457NA263.505270.774282.3786.80279.90876.661NA89.173NA83.83569.53276.90395.48979.59484.15379.93391.02575.87476.39892.692.57275.38255.11969.712101.36760.59663.963103.2468.07972.85144.16580.64173.17951.39965.0774.804105.019NANANANA
  2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesBNANA5e-06NA5e-06NA5.0000000000000004e-08NA5.0000000000000004e-085.0000000000000004e-08NA5.0000000000000004e-08NA5.0000000000000004e-08NA5.0000000000000004e-085.0000000000000004e-08NA5.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-08NA5.0000000000000004e-08NA5.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-085.0000000000000004e-08NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesE▄▄▄3.97e-063.97e-063.97e-06NA3.97e-06NA3.97e-08NA3.97e-083.97e-08NA3.97e-08NA3.97e-08NA3.97e-083.97e-08NA3.97e-083.97e-083.97e-083.97e-083.97e-083.97e-08NA3.97e-08NA3.97e-083.97e-083.97e-083.97e-083.97e-083.97e-083.97e-083.97e-083.97e-083.97e-08NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesF▄▄▄3.4e-063.4e-063.4e-06NA3.4e-06NA3.4e-08NA3.4e-083.4e-08NA3.4e-08NA3.4e-08NA3.4e-083.4e-08NA3.4e-083.4e-083.4e-083.4e-083.4e-083.4e-08NA3.4e-08NA3.4e-083.4e-083.4e-083.4e-083.4e-083.4e-083.4e-083.4e-083.4e-083.4e-08NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesG▄▄▄3.92e-063.92e-063.92e-06NA3.92e-06NA3.92e-08NA3.92e-083.92e-08NA3.92e-08NA3.92e-08NA3.92e-083.92e-08NA3.92e-083.92e-083.92e-083.92e-083.92e-083.92e-08NA3.92e-08NA3.92e-083.92e-083.92e-083.92e-083.92e-083.92e-083.92e-083.92e-083.92e-083.92e-08NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesI▄▄▄3.13e-063.13e-063.13e-06NA3.13e-06NA3.13e-08NA3.13e-083.13e-08NA3.13e-08NA3.13e-08NA3.13e-083.13e-08NA3.13e-083.13e-083.13e-083.13e-083.13e-083.13e-08NA3.13e-08NA3.13e-083.13e-083.13e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesK▄▄▄3.44e-063.44e-063.44e-06NA3.44e-06NA3.44e-08NA3.44e-083.44e-08NA3.44e-08NA3.44e-08NA3.44e-083.44e-08NA3.44e-083.44e-083.44e-083.44e-083.44e-083.44e-08NA3.44e-08NA3.44e-083.44e-083.44e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesL▄▄▄3.31e-063.31e-063.31e-06NA3.31e-06NA3.31e-08NA3.31e-083.31e-08NANANANANANA3.31e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument wat:SeniorUnsecuredNotesSeriesM▄▄▄3.5299999999999997e-063.5299999999999997e-063.5299999999999997e-06NA3.5299999999999997e-06NA3.53e-08NA3.53e-083.53e-08NANANANANANA3.53e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value1620000.01619000.01617000.01614000.01613000.01613000.01610000.01609000.01608000.01608000.01605000.01604000.01603000.01602000.01598000.01596000.01594000.01592000.01586000.01586000.01581000.01579000.01577000.01573000.01572000.01570000.01567000.01562000.01561000.01560000.01552000.01546000.01543000.01541000.01537000.01535000.01534000.01534000.01528000.01524000.01523000.01517000.01511000.01488000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.1

Shares Issued

us-gaap:SharesIssued us-gaap:StatementClassOfStock

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value162161161161161161161160160160160160160160159158
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value6262626262626262626466666969727275777778797980808080808081818182828383848485858686868787888990909293939393949596969697
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value6162626262616162626366666868717174767677787979797980808080808181828283838384848585858686878888899091919191929394959697
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-04-032020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-10-032015-07-042015-04-042014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-10-022010-07-03
Value100000.0400000.0700000.0200000.0100000.0100000.0100000.0300000.0100000.0300000.0200000.0400000.01100000.0500000.0800000.01200000.0600000.0500000.0600000.0500000.0600000.0600000.0700000.01300000.01400000.01300000.01300000.01300000.0700000.0700000.0700000.01800000.01800000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value2.712.383.512.042.041.981.980.860.863.152.092.092.092.091.521.522.481.841.842.01.42-4.441.711.651.651.321.322.171.551.591.161.851.421.281.161.821.361.140.83
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value2.692.373.492.032.031.981.980.860.863.122.072.072.082.081.511.512.461.831.831.981.4-4.441.691.631.631.311.312.151.531.571.151.831.41.271.151.81.341.130.82
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value7.2918.3059.159.5938.9269.1969.669.6629.3149.9419.3579.2139.0799.8929.368129.1398.6558.3948.3678.396158.4118.3478.1558.4558.5388.1078.2248.1297.7238.6787.8767.4317.4967.3067.1147.2676.9346.8826.7487.0156.2946.2446.2836.031
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.40.01.61.72.00.01.71.61.90.01.61.51.91.42.21.61.71.31.61.63.31.41.71.61.81.51.61.71.91.41.91.71.71.41.61.61.71.31.51.51.61.31.61.61.6

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value0.7270.6330.6350.6450.6350.570.5980.5310.5670.5750.5160.4880.6030.6050.7810.7260.7870.7380.680.7310.6560.6710.60.6680.6480.6740.6710.6330.6720.7560.5680.630.6570.6680.6840.716
Percentage of AllocatedShareBasedCompensationExpense10.07.66.96.77.16.26.25.56.15.85.55.36.66.18.35.98.68.58.18.77.84.27.18.07.98.07.97.88.29.37.47.38.39.09.19.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.10.10.10.00.10.10.10.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.10.10.10.20.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value1.291.2521.2761.2010.9391.2531.4481.3651.3451.2411.2531.9940.8370.8040.810.780.750.7290.7890.6921.1271.2011.0661.0531.0811.1471.0841.1190.9970.9380.9840.9381.0041.0071.0571.129
Percentage of AllocatedShareBasedCompensationExpense17.715.113.912.510.513.615.014.114.412.513.421.69.28.18.66.48.28.49.48.313.47.612.712.613.313.612.713.812.111.512.710.812.713.614.115.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.00.20.20.30.00.20.20.20.00.30.10.20.10.10.10.10.10.10.20.30.20.20.20.20.20.20.20.20.20.20.20.20.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Allocated
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-09-29
Value5.2746.427.2397.7477.3527.3737.6147.7667.4028.1257.5886.7317.6398.4837.777107.6027.1886.9256.9446.613136.7456.6266.4266.6346.7836.3556.5556.4356.1717.116.2155.7565.461
Percentage of AllocatedShareBasedCompensationExpense72.377.379.180.882.480.278.880.479.581.781.173.184.185.883.087.783.283.182.583.078.888.280.279.478.878.579.478.479.779.279.981.978.977.574.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.10.01.31.41.60.01.31.21.60.01.21.31.61.11.91.41.41.11.31.22.91.11.31.31.41.21.31.41.51.11.61.41.31.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingGeneralAndAdministrativeExpenses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value16715422712613434200133137118192148111133-342.812163170
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.525.40.021.425.97.40.023.223.023.00.025.618.725.1-49.928.930.6

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-04-032020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value95320262213210299241249221286241243221270235229229211211251218220201237206208189233202201187228191188174208182179167204180176169189162155145170153144127
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.740.844.241.045.341.841.841.643.040.141.740.841.739.441.741.141.142.442.440.041.441.142.340.641.342.241.139.941.041.943.640.541.941.740.639.940.639.739.839.239.739.339.739.140.639.739.739.741.039.738.3

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:Product


Cost
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value176158217166134119203149156132200155159140186155148
Percentage of CostOfGoodsAndServicesSold0.0166.867.70.00.00.068.10.00.00.069.70.065.863.468.966.064.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.926.10.028.025.925.80.025.926.225.80.027.026.826.527.127.526.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product40.141.60.044.242.843.70.040.440.541.30.041.241.141.40.041.439.7

us-gaap:Service


Cost
Period End2021-07-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value1031039678909591928886858380848081
Percentage of CostOfGoodsAndServicesSold0.032.30.00.00.031.90.00.00.030.30.034.236.631.134.035.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.20.016.215.119.50.015.815.517.20.014.813.915.312.214.214.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service43.00.044.138.247.60.044.243.745.80.042.840.142.30.042.244.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-04
Value485437522435435364364396396479404404421421392392470406406417386457406404404379379420375384362405364364340
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.271.966.573.373.370.270.285.385.367.070.070.070.370.376.476.465.870.370.369.972.866.571.972.572.476.176.266.971.271.776.369.172.973.773.9

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-30
Value197173257150150145145575722416416417117111711719716916917414022515314814811311320214514510617512912311316413111282169112104103
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.028.632.725.325.328.028.012.412.431.328.528.528.728.722.822.827.729.329.329.326.532.827.226.526.522.822.832.227.627.122.429.925.925.024.628.226.623.319.229.924.623.224.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value302538232322224.3014.30123262627278.3928.39212282818285781716167.937.93282017122413181713171512271415-17.652-22.91216161521201618185.80217142018149.922
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.44.25.04.04.04.34.30.90.93.34.64.64.64.61.61.61.84.94.93.25.484.23.12.92.91.61.64.53.93.22.64.12.73.73.82.33.63.22.94.93.23.4-4.1-4.43.73.73.84.14.53.64.23.81.44.54.04.84.84.13.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value121011101013131414141111111111111111111113151414141212121110109.2059.0179.0468.9759.6699.0627.9717.4897.9277.3587.587.1857.5977.1076.8786.4916.6776.1595.0524.0833.8793.813.6212.6142.3432.8642.6493.13
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.81.41.81.82.52.53.03.02.02.02.01.91.92.32.31.62.02.02.02.62.22.62.52.52.62.61.92.22.02.11.61.81.81.91.71.81.71.71.41.61.71.71.51.61.51.51.31.41.11.00.81.00.90.70.50.80.70.9

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-30
Value1671482181261261221225353200138138144144108108185141141155111-353.172136131131105105174124128941511161059615111396701419889121
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.524.327.821.321.323.623.611.511.528.023.923.924.124.121.221.225.924.424.426.121.1-51.424.123.623.621.221.227.723.723.919.825.823.221.420.925.923.020.016.325.021.419.828.1

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementClassOfStock

us-gaap:RetainedEarnings


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value16714821812612253200138144108185141155111
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.524.30.021.323.611.50.023.924.121.20.024.426.121.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value16714821812612253200138144108185141155111-353.172136131105
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.524.30.021.323.611.50.023.924.121.20.024.426.121.1-51.424.123.621.2

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2020-12-312020-09-302020-06-302020-03-31
Value374000.0-1039000.0-736000.0-374000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.2-0.1-0.1

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value19617126315815815515568682361731731771771211212441711711791442301591531531181182081511511121811351301191721381188817611911210915912112011016412712011514810310592126968685
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.828.133.526.726.729.829.814.714.733.030.030.029.729.723.623.634.229.729.730.127.233.528.127.527.623.923.833.128.828.323.730.927.126.326.129.528.124.620.631.226.025.025.430.627.126.626.231.628.026.927.130.625.927.025.129.525.723.925.7

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value0.0276.7378.7330.21411-18.9460.11-4.485-6.4529.3277.8227.108-44.272110273829-60.8761.525-28.98218-19.91-8.54320-59.671-68.629-49.1586.6252631281.077-28.2763.09724-30.653
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.10.00.02.2-4.10.0-0.8-1.11.80.01.2-7.44.01.54.86.96.0-9.70.3-5.44.0-3.4-1.74.1-13.0-11.8-10.01.46.25.56.20.2-6.60.65.4-6.8

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.0276.7378.7330.21411-18.9460.11-4.485-6.4529.3277.8227.108-44.2721
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.10.00.02.2-4.10.0-0.8-1.11.80.01.2-7.44.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome us-gaap:SubsequentEventType

us-gaap:OtherIncome

us-gaap:SubsequentEvent


Other
Period End2021-07-04
Value10000000.0
Percentage of OtherIncome100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SubsequentEvent0.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-31
Value9.3219.3590.374-1.039-0.736-0.374-2.223-0.496-0.496-0.342-0.342-0.525-0.525-45.501-0.811-0.811-1.8280.346-0.4040.012-0.097-0.0970.1490.149
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.50.0-0.2-0.1-0.1-0.3-0.1-0.1-0.1-0.1-0.1-0.1-6.4-0.1-0.1-0.30.1-0.10.0-0.0-0.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value16714821812612253200138144108185141155111-353.172136
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.524.30.021.323.611.50.023.924.121.20.024.426.121.1-51.424.1

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value4438393434313134343734343636353538353535343533323230303230322928303028282726242623242524232323232323222220202019191918
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.66.35.05.95.96.06.07.57.55.25.95.96.16.16.86.85.36.16.16.06.55.16.05.95.96.26.25.25.86.16.24.86.16.26.34.95.55.65.74.85.25.55.94.85.35.35.64.55.15.15.24.75.15.35.54.65.25.45.5

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value681608786593593519519464464716577577599599513513715578578596530687565558558497497628526536475586500494460583493481430565457451430521449451420521454447427483401391367428373362333
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers

wat:GovernmentalAndAcademicCustomers


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value62659371564910777726498807463977564
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.110.711.812.110.910.515.013.512.212.513.814.012.411.914.113.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.110.70.012.110.910.50.013.512.212.50.014.012.411.914.113.311.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:GovernmentalAndAcademicCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:IndustrialCustomers


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value202183233179152143216171176155219171183162216168174
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.730.129.630.229.330.830.329.729.430.230.729.830.830.631.629.831.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.730.10.030.229.330.80.029.729.430.20.029.830.830.631.629.831.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:IndustrialCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PharmaceuticalCustomers


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value416360460343311272392328350294396325338305373321319
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.159.258.557.859.858.654.856.958.457.355.556.356.757.554.356.957.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.159.20.057.859.858.60.056.958.457.30.056.356.757.554.356.957.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:PharmaceuticalCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:Product


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value440382531376314274488370387320498378388339479375372
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.762.867.663.460.659.068.264.264.662.469.765.565.263.969.866.466.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.762.80.063.460.659.00.064.264.662.40.065.565.263.969.866.466.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Product100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value240226254217205190227206211193216199207191207190185
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.337.232.436.639.441.031.835.835.437.630.334.534.836.130.233.633.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.337.20.036.639.441.00.035.835.437.60.034.534.836.130.233.633.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:ChemistryConsumables


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-01
Value1261181311089597112100100991069599981009290879084
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.619.616.718.218.320.915.717.416.719.314.916.616.618.614.616.416.317.714.316.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.619.60.018.218.320.90.017.416.719.30.016.616.618.614.616.416.317.714.316.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:ChemistryConsumables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:TaInstrumentSystems


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value53465942383460464836684349426544433856394035593936365040383355403536493537344736353239313027
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.87.77.67.17.47.38.48.08.07.19.67.58.48.09.57.87.87.88.97.57.67.410.17.97.47.98.78.18.07.79.98.97.88.49.47.88.48.39.08.07.97.58.37.97.77.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.87.70.07.17.47.30.08.08.07.10.07.58.48.09.57.87.87.88.97.57.67.410.17.97.47.98.78.18.07.79.98.97.88.49.47.88.48.39.08.07.97.58.37.97.77.6
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


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value2119231815162118191721181917191717151816171517151514171515131814131215121212141111101110109.65
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.23.03.03.03.63.13.23.33.43.03.23.23.22.93.13.03.22.93.13.23.33.13.13.23.23.03.23.23.23.33.13.03.03.02.82.92.92.72.62.62.52.42.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.20.03.03.03.60.03.23.33.40.03.23.23.22.93.13.03.22.93.13.23.33.13.13.23.23.03.23.23.23.33.13.03.03.02.82.92.92.72.62.62.52.42.52.72.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:TaService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:WatersInstrumentSystems


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value261216340225181142316223238184323238239198313238238197296226231188270219217188275213206176263196195184245202203176261212206197246185182158
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.335.543.338.034.930.744.238.839.935.945.341.340.237.345.742.242.739.747.243.043.239.746.143.844.040.947.243.242.841.046.643.143.342.947.045.045.242.050.246.846.146.250.946.346.743.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.335.50.038.034.930.70.038.839.935.90.041.340.237.345.742.242.739.747.243.043.239.746.143.844.040.947.243.242.841.046.643.143.342.947.045.045.242.050.246.846.146.250.946.346.743.1
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


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value219206231199189174205188192176195180188174187172168157167160159151155148146142156146145132145130132123136126124121126121119113116107104105
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.234.029.433.636.437.528.732.632.134.327.331.331.632.927.330.530.231.726.730.529.831.926.529.629.731.126.829.630.130.725.828.529.328.826.228.127.628.924.226.726.826.524.126.926.828.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.234.00.033.636.437.50.032.632.134.30.031.331.632.927.330.530.231.726.730.529.831.926.529.629.731.126.829.630.130.725.828.529.328.826.228.127.628.924.226.726.826.524.126.926.828.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:WatersService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:Service, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value88791279278679075847288758072867272
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.013.016.115.515.214.612.613.014.214.212.413.113.513.712.612.813.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.013.00.015.515.214.60.013.014.214.20.013.113.513.712.612.813.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service, us-gaap:TransferredOverTime


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value151147127125126123137131127120127123126119120117112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.324.216.221.124.326.519.122.821.223.517.921.421.322.417.620.820.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.324.20.021.124.326.50.022.821.223.50.021.421.322.417.620.820.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service us-gaap:TransferredOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:ChemistryConsumables, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value126118131108959711210010099106959998100929087
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.619.616.718.218.320.915.717.416.719.314.916.616.618.614.616.416.317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.619.60.018.218.320.90.017.416.719.30.016.616.618.614.616.416.317.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:ChemistryConsumables us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:InstrumentSystems, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value314263400268219176376270286221392282289240379282282
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.143.250.945.142.338.152.646.847.943.154.848.948.645.355.250.050.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.143.20.045.142.338.10.046.847.943.10.048.948.645.355.250.050.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:InstrumentSystems us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:CN


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value12710215111589471251111129013010910993111969485
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.716.919.319.517.310.217.519.318.817.518.219.018.417.716.317.016.917.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.716.90.019.517.310.20.019.318.817.50.019.018.417.716.317.016.917.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:JP


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value455048444145444645434343434242424141
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.68.36.27.57.99.76.28.17.78.56.17.57.28.16.17.57.48.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.68.30.07.57.99.70.08.17.78.50.07.57.28.16.17.57.48.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:JP100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value186162213172148143205164173149204170161146194171164139
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.426.727.129.028.630.928.628.429.029.028.629.527.127.728.330.229.428.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.426.70.029.028.630.90.028.429.029.00.029.527.127.728.330.229.428.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Americas


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value224197251199174172245196206181248206198181235203196
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.032.432.033.633.637.034.234.034.535.434.835.833.234.234.335.935.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.032.40.033.633.637.00.034.034.535.40.035.833.234.234.335.935.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Americas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:AsiaPacific


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value269229295236208159261237238200262222236200242209215
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.637.737.639.840.034.236.641.239.939.036.838.439.737.735.337.038.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.637.70.039.840.034.20.041.239.939.00.038.439.737.735.337.038.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AsiaPacific100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value186181239158136133209143153131203149161148209153145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.429.830.426.626.328.829.224.825.625.628.525.827.028.030.427.126.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.429.80.026.626.328.80.024.825.625.60.025.827.028.030.427.126.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:AmericasOther


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value373438272528403232324436363441313235
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.65.74.94.65.06.15.65.65.56.46.26.26.16.66.05.75.87.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.65.70.04.65.06.10.05.65.56.40.06.26.16.66.05.75.87.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:AmericasOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:AsiaOther


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value977695757766927980668868846388708068
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.312.512.112.814.814.412.913.713.413.012.411.914.112.012.912.614.313.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.312.50.012.814.814.40.013.713.413.00.011.914.112.012.912.614.313.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax wat:AsiaOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime


Revenue
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value529461659468393341579445472393587454469411566447445391
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.775.883.878.975.773.580.977.278.876.582.178.678.777.682.479.279.978.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.775.80.078.975.773.50.077.278.876.50.078.678.777.682.479.279.978.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TransferredAtPointInTime100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value15814315313513511711714714714112612613313313413414212612613613014813513013013013013012312912912812412211913112213112613012012311812211512211712612112511712011110610610910210999
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.223.519.522.822.822.622.631.831.819.721.821.822.222.226.126.120.022.022.022.924.621.623.923.323.326.226.220.723.524.227.221.924.924.826.022.624.827.429.423.126.427.327.623.425.627.227.924.226.728.027.424.927.827.329.025.627.530.229.8

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value31033211283926792648266625572561282232493727404341574489532451624996481046624576444843684268412140283872387737513727364935823425328532073168299728832839272326392571244723271907
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value28352980260727202840300427732445226622812160216621822374309025332478241523602317229822662209215220962010198319091884183018191806176517301700166716201551149614801346129612581058
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets91.492.891.8101.6107.2112.7108.595.580.370.258.053.652.552.958.049.149.650.250.650.651.751.951.852.252.051.951.150.950.550.250.852.753.754.053.755.656.254.755.056.152.353.054.155.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value31033211283926792648266625572561282232493727404341574489532451624996481046624576444843684268412140283872387737513727364935823425328532073168299728832839272326392571244723271907
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-312008-12-312007-12-31
Value268230232-41.581-191.742-337.999-216.281115556967156718761975211422332629251823942301225921492101205819681932186218941841184318191763161815201476146713291262128712261159122511501068848661586
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.67.28.2-1.6-7.2-12.7-8.54.519.729.842.046.447.547.142.050.950.449.849.449.448.348.148.247.848.048.148.949.149.549.849.247.346.346.046.344.443.845.345.043.947.747.045.944.50.00.0

us-gaap:StockholdersEquity us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-111.179-111.206-117.943-126.676-126.89-138.417-119.471-119.581-115.096-108.644-117.971-125.793-132.901-88.631-110.067-216.28
Percentage of StockholdersEquity-41.4-48.1-50.8304.666.241.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.2-4.9-9.4
Percentage of Assets-3.6-3.5-4.2-4.7-4.8-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-4.6
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value2090205420291982195919471926189718831872183418151798177917451607
Percentage of StockholdersEquity779.1889.4874.2-4768.4-1021.9-576.2-890.91643.1338.7193.5117.196.791.184.178.169.8
Percentage of Assets67.364.071.574.074.073.075.474.166.757.649.244.943.339.632.834.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value1.621.6191.6171.6141.6131.6131.611.6091.6081.6081.6051.6041.6031.6021.5981.586
Percentage of StockholdersEquity0.60.70.7-3.9-0.8-0.5-0.71.40.30.20.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value7423725671076889676266396587638662486104599558105669551354055385
Percentage of StockholdersEquity2767.13141.73061.9-16569.3-3527.1-1964.5-3045.85529.61123.4630.8382.5309.6287.0260.7242.0233.9
Percentage of Assets239.2225.9250.3257.1255.4249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5115.5
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-9135.628-8969.643-8788.984-8788.928-8788.872-8788.801-8612.576-8051.033-7462.826-6901.629-6146.322-5624.86-5361.355-5090.581-4808.211-4475.667
Percentage of StockholdersEquity-3405.3-3883.6-3786.021136.94583.72600.23982.1-6970.6-1341.6-713.2-392.2-299.8-271.4-240.7-215.2-194.4
Percentage of Assets-294.4-279.3-309.5-328.0-331.9-329.6-336.8-314.3-264.4-212.4-164.9-139.1-128.9-113.4-90.3-96.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-18.898-18.939-19.861-15.454-15.067-15.007-15.405-9.42-9.835-9.861-9.869-34.875-35.425-37.103
Percentage of StockholdersEquity-7.0-8.2-8.637.27.94.47.1-8.2-1.8-1.0-0.6-1.9-1.8-1.7
Percentage of Assets-0.6-0.6-0.7-0.6-0.6-0.6-0.6-0.4-0.3-0.3-0.3-0.9-0.9-0.7
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-07-032021-04-032019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-0.015-0.01-0.061-0.055-0.608-2.405-3.563-4.812-3.546
Percentage of StockholdersEquity-0.0-0.0-0.1-0.0-0.1-0.2-0.2-0.2-0.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-111.179-111.206-117.943-126.676-126.89-138.417-119.471-119.581-115.096-108.644-117.971-125.793-132.901-110.067-216.28-146.726-78.7055.879-26.395-36.055-11.79515-8.58166
Percentage of StockholdersEquity-41.4-48.1-50.8304.666.241.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.9-9.4-7.1-4.20.3-1.8-2.9-1.11.8-1.311.3
Percentage of Assets-3.6-3.5-4.2-4.7-4.8-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.1-4.6-3.4-2.00.2-0.8-1.3-0.50.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-92.266-92.257-98.082-111.222-111.822-123.41-104.066-110.1-105.206-98.175-105.697-87.355-92.664-69.418
Percentage of StockholdersEquity-34.4-39.9-42.3267.558.336.548.1-95.3-18.9-10.1-6.7-4.7-4.7-3.1
Percentage of Assets-3.0-2.9-3.5-4.2-4.2-4.6-4.1-4.3-3.7-3.0-2.8-2.2-2.2-1.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value16381767140112911269132713121343162020772663297031243438427040783947377836353534340533103213309330062875285326992680260725562429234422872257213720652023194218631800168315861172
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.855.049.348.247.949.851.352.557.463.971.473.575.176.680.279.079.078.578.077.276.675.875.375.174.674.373.672.071.971.471.470.971.471.371.371.371.671.371.370.670.068.868.261.4

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-312007-12-31
Value460683436374339390335404587684796689742716642603567584505430463416487459365440422356428395440431455472481356369427383423344296308262310297341428597
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.821.315.414.012.814.613.115.820.821.121.417.117.916.012.111.711.412.110.89.410.49.511.411.19.111.410.99.511.510.812.312.613.814.715.211.912.815.014.116.113.412.113.30.00.00.017.90.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012016-12-312015-12-31
Value460683436374339390335404587684796689742716642603567505487
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.821.315.414.012.814.613.115.820.821.121.417.117.916.012.111.711.410.811.4

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value2031256.45122163.811.4298748293813941506183527512651255823822307228221362088191118511843166816331589148814571362126811941117105710921022926897770776742637289
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.63.90.20.80.60.10.13.114.825.234.536.240.951.751.351.249.549.549.948.047.844.844.945.743.142.142.439.939.938.037.036.434.933.436.435.532.633.029.230.230.327.415.2

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value543550573494496522587504518508568489492502533456462461489441445439468416406394433393401401430373365377404362355353367354365349358314
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.517.120.218.518.719.623.019.718.415.615.212.111.911.210.08.89.39.610.59.710.010.111.010.110.110.211.210.510.811.012.010.911.111.812.812.112.312.513.513.414.214.315.416.5

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value348327304326344344320368351333291313299299270297287279262303286287263281272257246269272266242256242235229246236233212246243223204178
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.210.210.712.213.012.912.514.412.510.37.87.87.26.75.15.85.75.85.66.66.46.66.26.86.86.66.47.27.37.36.87.57.47.47.28.28.28.27.89.39.59.18.89.4

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value8379807373676765746868838384726971707076737882851181151189088867899868484798182806869717749
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.52.82.72.82.52.62.62.62.11.82.12.01.91.41.31.41.51.51.71.71.81.92.12.93.03.12.42.42.42.22.92.62.62.72.72.82.93.02.62.72.93.32.6

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1128987871838768704684659587518466437
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.738.623.415.716.516.517.718.418.519.020.023.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1255741222020208037201312
Percentage of PropertyPlantAndEquipmentGross11.25.94.82.62.62.93.012.26.44.02.92.8
Percentage of Assets4.42.31.10.40.40.50.52.21.20.80.60.6
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value363736373538393735342020
Percentage of PropertyPlantAndEquipmentGross3.33.84.24.54.65.55.85.66.16.74.44.7
Percentage of Assets1.31.41.00.70.80.91.01.01.11.30.91.1
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherMachineryAndEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value588537494484438380367336317288268245
Percentage of PropertyPlantAndEquipmentGross52.254.456.757.857.153.953.751.054.055.657.556.1
Percentage of Assets20.721.013.39.19.48.99.59.410.010.611.512.9
Percentage of Assets us-gaap:OtherMachineryAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.0

wat:BuildingsAndLeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value376355299294274265256205196174163159
Percentage of PropertyPlantAndEquipmentGross33.436.034.335.135.737.737.531.233.533.735.136.3
Percentage of Assets13.313.98.05.55.96.26.65.76.26.47.08.3
Percentage of Assets wat:BuildingsAndLeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value634570528489431371363334314280251226
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.322.314.29.29.38.79.49.39.910.310.811.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value527513494469459439417381368355343338335349349342338334337329330336333325324316321322328329324313295282273261251238237221218216215210
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.016.017.417.517.316.516.314.913.111.09.28.48.17.86.66.66.87.07.27.27.47.77.87.98.18.28.38.68.89.09.19.29.08.88.68.78.78.48.78.48.58.99.211.1

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8.03.02.03.03.03.03.03.0
Percentage of PropertyPlantAndEquipmentNet1.60.70.60.90.90.90.90.9
Percentage of Assets0.30.10.10.10.10.10.10.1
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value350276203186207
Percentage of PropertyPlantAndEquipmentNet71.066.359.453.461.4
Percentage of Assets12.310.85.53.54.4
Percentage of Assets country:US0.00.00.00.00.0

srt:Americas


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value351278205188207
Percentage of PropertyPlantAndEquipmentNet71.266.859.953.861.7
Percentage of Assets12.410.95.53.54.5
Percentage of Assets srt:Americas0.00.00.00.00.0

srt:AsiaPacific


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2221192414
Percentage of PropertyPlantAndEquipmentNet4.55.25.67.14.3
Percentage of Assets0.80.90.50.50.3
Percentage of Assets srt:AsiaPacific0.00.00.00.00.0

srt:Europe


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value119116118136114
Percentage of PropertyPlantAndEquipmentNet24.328.034.539.134.1
Percentage of Assets4.24.63.22.62.5
Percentage of Assets srt:Europe0.00.00.00.00.0

wat:AmericasOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.1791.9291.681.720.832
Percentage of PropertyPlantAndEquipmentNet0.20.50.50.50.2
Percentage of Assets0.00.10.00.00.0
Percentage of Assets wat:AmericasOther0.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282020-01-152019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-312008-12-31
Value43943844443142742372356353355356355357357362359359357353352356352356356352353350354358354353350340315315316316306309297298294293291293268
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.213.615.616.116.115.90.013.913.812.611.09.58.98.68.16.87.07.17.47.67.87.98.28.48.58.89.09.29.69.59.79.89.99.69.810.010.610.610.910.911.311.412.012.515.40.0

us-gaap:Goodwill us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

wat:Andrewalliance


Goodwillus-gaap:
Period End2020-12-31
Value71
Percentage of Goodwill16.1
Percentage of Assets2.5
Percentage of Assets wat:Andrewalliance0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value246240258255248243240237244243246252218231228224219211207221217223218222223213232241237238239230219214220212199205191196195191181182
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.07.59.19.59.49.19.49.38.67.56.66.35.25.24.34.34.44.44.44.84.95.15.15.45.55.56.06.46.46.56.76.76.76.76.97.16.97.27.17.47.67.87.89.5

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1326282162657982120806739
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.51.10.80.41.31.52.12.33.82.92.92.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302019-01-01
Value88889386889093859194100
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.92.73.33.23.33.43.73.33.22.90.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Equipment


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-30
Value931.9551.9622.1972.668
Percentage of OperatingLeaseRightOfUseAsset100.02.12.32.42.8
Percentage of Assets3.30.10.10.10.1
Percentage of Assets us-gaap:Equipment0.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-30
Value6264576164
Percentage of OperatingLeaseRightOfUseAsset66.968.867.067.768.1
Percentage of Assets2.22.52.22.22.0
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.0

wat:AutomobilesOne


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-30
Value2927262727
Percentage of OperatingLeaseRightOfUseAsset31.829.130.729.929.1
Percentage of Assets1.01.11.01.00.8
Percentage of Assets wat:AutomobilesOne0.00.00.00.00.0

wat:AutomobilesTwo


Operating
Period End2020-12-312019-12-31
Value1.1841.955
Percentage of OperatingLeaseRightOfUseAsset1.32.1
Percentage of Assets0.00.1
Percentage of Assets wat:AutomobilesTwo0.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value162162148144154141137159142121118123122107116158134133130134141140146126120116115129127120111111110106100696162546064615249
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.15.25.45.85.35.46.25.13.73.23.02.92.42.23.12.72.82.82.93.23.23.43.13.03.03.03.43.43.33.13.33.43.33.22.32.12.22.02.32.52.52.32.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value8381726050614964677268657170646671666767667370616563656065736462565954606261556467676449
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.52.52.31.92.31.92.52.42.21.81.61.71.61.21.31.41.41.51.51.51.71.71.51.61.71.71.61.72.01.81.81.71.91.72.02.22.22.02.42.62.82.82.6

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value5282766087464549381922596410073241.4052.89215137.29610145.388221915143.9593.55319392127602013209.449258.44231113
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.72.62.72.33.31.81.81.91.40.60.61.51.52.21.40.50.00.10.30.30.20.20.30.10.60.50.40.40.10.10.61.20.60.91.90.70.50.70.31.00.30.90.50.7

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent us-gaap:StatementEquityComponents

us-gaap:AccruedLiabilitiesCurrent

us-gaap:TreasuryStock


Accrued
Period End2021-07-032021-04-032020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-31
Value5.07.00.00.0201810.02523
Percentage of AccruedLiabilitiesCurrent100.0100.00.00.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.00.00.80.70.40.80.6
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.0

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value100150150150501001001001000.1780.2840.4990.35410022522522512512512512517517517517522522523323213313313213313244740132329027113639066131
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.15.35.65.71.93.93.93.63.10.00.00.00.01.94.44.54.72.72.72.82.94.14.34.44.55.86.06.36.43.73.94.04.24.214.913.911.410.710.35.316.02.86.9

us-gaap:DebtCurrent us-gaap:DebtInstrument

wat:SeniorUnsecuredNotesSeriesE


Debt
Period End2020-12-312020-09-262020-06-272020-03-28
Value0.05505050
Percentage of DebtCurrent0.033.333.3100.0
Percentage of Assets0.01.91.91.9
Percentage of Assets wat:SeniorUnsecuredNotesSeriesE0.00.00.00.0

wat:SeniorUnsecuredNotesSeriesF


Debt
Period End2021-04-032020-12-312020-09-262020-06-27
Value1000.1100100
Percentage of DebtCurrent100.00.166.766.7
Percentage of Assets3.10.03.73.8
Percentage of Assets wat:SeniorUnsecuredNotesSeriesF0.00.00.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value681785804722697551591597611603448448474534606662653632520519522524564535546538581574594584487492474476504767721648601605467716385394
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.924.428.327.026.320.723.123.321.718.612.011.111.411.911.412.813.113.111.211.411.712.013.213.013.613.915.015.316.016.013.614.414.514.915.925.625.022.822.122.918.229.316.620.7

Notes Payable Current

us-gaap:NotesPayableCurrent

us-gaap:NotesPayableCurrent


Notes
Period End2021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-31
Value100150150150501001000.178
Percentage of NotesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.15.35.65.71.93.93.90.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-30
Value27262726262727232526
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.81.01.01.01.11.10.90.90.8

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

us-gaap:OtherCurrentLiabilities


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-30
Value2727232526
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0
Percentage of Assets1.01.10.90.90.8
Percentage of Assets us-gaap:OtherCurrentLiabilities0.00.00.00.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value1731671971571251131379810193115848510311910599929283848093827570858084748579837390707167736267607258
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.26.95.94.74.25.43.93.62.93.12.12.12.32.22.02.01.92.01.81.91.82.22.01.91.82.22.12.32.02.42.32.52.32.82.42.52.42.72.42.62.53.13.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value21542195180219982142245321821848165416781711171817071840248418711824178318391798177617421645161615491472140113351289124513311313129012531196899899903894874879580873664
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.468.463.574.680.992.085.372.258.651.745.942.541.141.046.736.336.537.139.539.339.939.938.639.238.538.036.135.634.634.137.238.439.339.137.830.031.231.832.933.134.223.737.534.8

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value136012551048104811481148114712471897
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.949.037.132.330.828.427.627.835.6

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value16031603120614211546184515801255104810481148114811471247189717321687164217011656163115931493145513851310124012051160110011901160113511001045700700700700700700400700500
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.749.942.553.058.469.261.849.037.132.330.828.427.627.835.633.633.834.136.536.236.736.535.035.334.433.832.032.131.130.133.233.934.534.333.023.424.324.725.726.527.216.330.126.2

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

wat:FixedInterestRate, us-gaap:UnsecuredDebt


Long
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value1300140091000091091091010001000510510510510510510610
Percentage of LongTermDebtNoncurrent81.187.375423.864.058.949.363.379.648.648.744.444.444.440.932.1
Percentage of Assets41.943.632043.234.034.434.139.139.018.115.713.712.612.311.411.5
Percentage of Assets wat:FixedInterestRate us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebtNoncurrent us-gaap:LongtermDebtType

us-gaap:UnsecuredDebt


Long
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-04-012016-12-312016-04-022015-12-312014-12-31
Value1300140096000096096096000011001100560560560560560600700700700450500600
Percentage of LongTermDebtNoncurrent81.187.379568.067.562.152004.969.687.653.453.448.848.848.848.136.942.641.128.233.548.4
Percentage of Assets41.943.633803.835.836.236002.043.042.919.817.215.013.913.513.413.114.615.010.311.715.5
Percentage of Assets us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312013-12-31
Value1603170313561571169618951681135511481148114811481148124719971957191218671827178217561718166816301560148514651323
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets51.753.047.858.664.071.165.752.940.735.330.828.427.627.837.537.938.338.839.238.939.539.339.139.638.738.437.836.9

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value747272656255595555565563676767697272726670707777838485575976741021011011019697102927176757269
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.32.62.42.42.12.32.22.01.71.51.61.61.51.31.31.41.51.61.51.61.61.81.92.12.22.21.51.62.12.13.03.13.23.23.23.43.63.42.73.03.13.13.6

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value8.7926.9656.2575.649
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent12.111.811.28.4
Percentage of Assets0.30.30.20.1
Percentage of Assets country:US us-gaap:DefinedBenefitPostretirementHealthCoverage0.00.00.00.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value24211522
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent34.036.927.633.6
Percentage of Assets0.90.90.40.4
Percentage of Assets us-gaap:ForeignPlan us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value951009792113948082907576777467626256595463616560646156565046444132322925333129292525252222
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.13.13.43.54.33.53.23.23.22.32.01.91.81.51.21.21.11.21.21.41.41.51.41.61.51.51.41.31.21.21.21.01.00.90.81.11.11.01.11.01.01.01.01.2

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-30
Value61616862636366616667
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.92.42.32.42.42.62.42.42.1

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentLiabilities


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-30
Value6866616667
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets2.42.62.42.42.1
Percentage of Assets us-gaap:OtherNoncurrentLiabilities0.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value23
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value14
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value10
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.4

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value8269000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value16
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.6

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-282019-06-292019-03-302019-01-01
Value9594859194100
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.73.33.32.90.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value103
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets3.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value7744000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-312008-12-312007-12-31
Value268230232-41.581-191.742-337.999-216.281115556967156718761975211422332629251823942301225921492101205819681932186218941841184318191763161815201476146713291262128712261159122511501068848661586
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.67.28.2-1.6-7.2-12.7-8.54.519.729.842.046.447.547.142.050.950.449.849.449.448.348.148.247.848.048.148.949.149.549.849.247.346.346.046.344.443.845.345.043.947.747.045.944.50.00.0

us-gaap:StockholdersEquity us-gaap:StatementClassOfStock

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-111.179-111.206-117.943-126.676-126.89-138.417-119.471-119.581-115.096-108.644-117.971-125.793-132.901-88.631-110.067-216.28
Percentage of StockholdersEquity-41.4-48.1-50.8304.666.241.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.2-4.9-9.4
Percentage of Assets-3.6-3.5-4.2-4.7-4.8-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-4.6
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value2090205420291982195919471926189718831872183418151798177917451607
Percentage of StockholdersEquity779.1889.4874.2-4768.4-1021.9-576.2-890.91643.1338.7193.5117.196.791.184.178.169.8
Percentage of Assets67.364.071.574.074.073.075.474.166.757.649.244.943.339.632.834.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value1.621.6191.6171.6141.6131.6131.611.6091.6081.6081.6051.6041.6031.6021.5981.586
Percentage of StockholdersEquity0.60.70.7-3.9-0.8-0.5-0.71.40.30.20.10.10.10.10.10.1
Percentage of Assets0.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value7423725671076889676266396587638662486104599558105669551354055385
Percentage of StockholdersEquity2767.13141.73061.9-16569.3-3527.1-1964.5-3045.85529.61123.4630.8382.5309.6287.0260.7242.0233.9
Percentage of Assets239.2225.9250.3257.1255.4249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5115.5
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-31
Value-9135.628-8969.643-8788.984-8788.928-8788.872-8788.801-8612.576-8051.033-7462.826-6901.629-6146.322-5624.86-5361.355-5090.581-4808.211-4475.667
Percentage of StockholdersEquity-3405.3-3883.6-3786.021136.94583.72600.23982.1-6970.6-1341.6-713.2-392.2-299.8-271.4-240.7-215.2-194.4
Percentage of Assets-294.4-279.3-309.5-328.0-331.9-329.6-336.8-314.3-264.4-212.4-164.9-139.1-128.9-113.4-90.3-96.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-18.898-18.939-19.861-15.454-15.067-15.007-15.405-9.42-9.835-9.861-9.869-34.875-35.425-37.103
Percentage of StockholdersEquity-7.0-8.2-8.637.27.94.47.1-8.2-1.8-1.0-0.6-1.9-1.8-1.7
Percentage of Assets-0.6-0.6-0.7-0.6-0.6-0.6-0.6-0.4-0.3-0.3-0.3-0.9-0.9-0.7
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-07-032021-04-032019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-0.015-0.01-0.061-0.055-0.608-2.405-3.563-4.812-3.546
Percentage of StockholdersEquity-0.0-0.0-0.1-0.0-0.1-0.2-0.2-0.2-0.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-111.179-111.206-117.943-126.676-126.89-138.417-119.471-119.581-115.096-108.644-117.971-125.793-132.901-110.067-216.28-146.726-78.7055.879-26.395-36.055-11.79515-8.58166
Percentage of StockholdersEquity-41.4-48.1-50.8304.666.241.055.2-103.5-20.7-11.2-7.5-6.7-6.7-4.9-9.4-7.1-4.20.3-1.8-2.9-1.11.8-1.311.3
Percentage of Assets-3.6-3.5-4.2-4.7-4.8-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.1-4.6-3.4-2.00.2-0.8-1.3-0.50.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value-92.266-92.257-98.082-111.222-111.822-123.41-104.066-110.1-105.206-98.175-105.697-87.355-92.664-69.418
Percentage of StockholdersEquity-34.4-39.9-42.3267.558.336.548.1-95.3-18.9-10.1-6.7-4.7-4.7-3.1
Percentage of Assets-3.0-2.9-3.5-4.2-4.2-4.6-4.1-4.3-3.7-3.0-2.8-2.2-2.2-1.3
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value1620000.01619000.01617000.01614000.01613000.01613000.01610000.01609000.01608000.01608000.01605000.01604000.01603000.01602000.01598000.01596000.01594000.01592000.01586000.01586000.01581000.01579000.01577000.01573000.01572000.01570000.01567000.01562000.01561000.01560000.01552000.01546000.01543000.01541000.01537000.01535000.01534000.01534000.01528000.01524000.01523000.01517000.01511000.01488000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value20902054202919821959194719261897188318721834181517981779174517101683165316071594154115151490145114391414139213461336132212701223119611731155113611281117108910511041996970808
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.364.071.574.074.073.075.474.166.757.649.244.943.339.632.833.133.734.434.534.834.634.734.935.235.736.535.935.935.836.235.535.736.436.636.537.939.139.340.039.840.540.741.742.4

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value74237256710768896762663965876386624861045995581056695513540557585622549053855210508549574863471245964490439442434129403339623821372336333512333632373140305129142813271226182236
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets239.2225.9250.3257.1255.4249.0257.6249.4221.4187.8160.8143.7136.3122.8101.5111.5112.5114.1115.5113.9114.3113.5113.9114.3114.1116.0113.3113.1110.8110.5110.6111.6113.3113.3110.9111.3112.3110.6112.1110.4109.4110.9112.5117.2

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value-111.179-111.206-117.943-126.676-126.89-138.417-119.471-119.581-115.096-108.644-117.971-125.793-132.901-88.631-110.067-120.427-147.775-186.537-216.28-155.404-156.929-127.947-146.726-126.816-118.273-138.376-78.705-10.07639325.879-25.174-53.594-54.671-26.395-29.492-53.589-22.936-36.055-0.7833222-11.79515
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.6-3.5-4.2-4.7-4.8-5.2-4.7-4.7-4.1-3.3-3.2-3.1-3.2-2.0-2.1-2.3-3.0-3.9-4.6-3.4-3.5-2.9-3.4-3.1-2.9-3.6-2.0-0.31.00.90.2-0.7-1.6-1.7-0.8-1.0-1.9-0.8-1.3-0.01.30.9-0.50.8

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value91358969878887888788878886128051746269016146562453615090480847214641456444754391432242454149407039863906381537393662357034773402334732773176311530512948288028072663258225092213
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets294.4279.3309.5328.0331.9329.6336.8314.3264.4212.4164.9139.1128.9113.490.391.492.994.996.096.097.297.297.298.898.9100.998.499.798.397.897.199.3101.9102.2100.3104.0105.8103.8105.8106.4103.6105.5107.8116.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value14321826717219815119114812717518114610017519215411514310410912713110110511115012797122134108111103
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.035.90.029.138.232.60.025.721.234.20.025.316.933.128.027.326.925.322.924.229.725.222.523.326.428.828.021.728.727.727.228.628.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-122.102-159.004-37.533-34.226-62.16-130.175-56.6394035143442551310895-131.764-110.136-119.949-135.363-131.403-107.51-90.4532.457-108.17-127.727-62.954-161.262-20.6-53.007-121.107-79.078-156.765-59.485-116.187
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.9-26.10.0-5.8-12.0-28.00.07.058.684.50.08.952.1168.8-19.2-19.5-27.9-23.9-28.7-23.8-21.00.5-24.0-28.3-15.0-30.9-4.5-11.8-28.3-16.4-39.1-15.2-31.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-236.966188-172.534-108.602-192.28432-211.137-366.807-571.6-723.134-493.079-256.212-364.166-1006.065-24.375-17.208-40.299-2.531-8.981-18.495-34.581-13.139-16.859-24.542-11.995-22.469-13.2262.523-27.25-1.363-18.732-21.678-18.479
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.831.00.0-18.3-37.07.10.0-63.5-95.4-140.70.0-44.3-61.1-189.6-3.5-3.0-9.4-0.4-2.0-4.1-8.0-2.5-3.7-5.4-2.9-4.3-2.90.6-6.4-0.3-4.7-5.5-5.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-223.7272476135-51.02554-68.934-183.349-96.972-111.31106-52.83125743836
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-32.840.60.06.0-9.811.70.0-31.8-16.2-21.70.0-9.14.314.05.66.5

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value3.322.787-3.7821.8661.748-2.5257.8030.1850.191.4422.1273.27-4.0631.07142-2.162-0.966.168-3.724.287-3.1033.744.761.279-2.2862.82810-1.239-5.694-2.21811-7.009-3.181-0.991-42.837-2.235-2.317-4.831.248-3.38-2.213-1.479-10.368-0.655-2.064-1.95
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-11.04-7.94559-9.977-32.952-54.02680-5.3896.823-59.33184-0.3023.997-40.58877-11.413-6.835-35.1171-7.1535.936-38.254567.3811-24.802535.2821.277-30.147573.381-9.467-16.499450.42310-16.01222-2.84910-17.73227.8616.6226.23
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value2030-27.079-18.95-2.3129-52.119211744-22.43135.77628-26.9487.0488.69610-19.841144.51520-19.2049.2938.50921-20.8285.2547.39524-19.3939.967.98212-14.9037.2311118-27.3971018171.265109.03516
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value14321826717219815119114812717518114610017519215411514310410912713110110511115012797122134108111103
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.035.90.029.138.232.60.025.721.234.20.025.316.933.128.027.326.925.322.924.229.725.222.523.326.428.828.021.728.727.727.228.628.1

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value16714821812612253200138144108185141155111-353.172136
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.524.30.021.323.611.50.023.924.121.20.024.426.121.1-51.424.1

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value7.2918.3059.159.5938.9269.1969.669.6629.3149.9419.3579.2139.0799.8929.368129.1398.6558.3948.3678.396158.4118.3478.1558.4558.5388.1078.2248.1297.7238.6787.8767.4317.4967.3067.1147.2676.9346.8826.7487.0156.2946.2446.2836.031
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-122.102-159.004-37.533-34.226-62.16-130.175-56.6394035143442551310895-131.764-110.136-119.949-135.363-131.403-107.51-90.4532.457-108.17-127.727-62.954-161.262-20.6-53.007-121.107-79.078-156.765-59.485-116.187
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.9-26.10.0-5.8-12.0-28.00.07.058.684.50.08.952.1168.8-19.2-19.5-27.9-23.9-28.7-23.8-21.00.5-24.0-28.3-15.0-30.9-4.5-11.8-28.3-16.4-39.1-15.2-31.6

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value921223.4265.63133.521.4280.08.7912697394343170615790731823472718519685543138533794465552571607
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-236.966188-172.534-108.602-192.28432-211.137-366.807-571.6-723.134-493.079-256.212-364.166-1006.065-24.375-17.208-40.299-2.531-8.981-18.495-34.581-13.139-16.859-24.542-11.995-22.469-13.2262.523-27.25-1.363-18.732-21.678-18.479
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-34.831.00.0-18.3-37.07.10.0-63.5-95.4-140.70.0-44.3-61.1-189.6-3.5-3.0-9.4-0.4-2.0-4.1-8.0-2.5-3.7-5.4-2.9-4.3-2.90.6-6.4-0.3-4.7-5.5-5.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value0.05000.00.00.03153255990.1970.1660.264-0.2160.1450.081135045454045402901104090751204526066103040895653050875040261552420.5254655213
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value1001502151252001000.03900.1650.080.4350.010075013100.00.0520.0120.015250600.0200.019100102235.0721.2950.60115860100.1723.7881018211259.175217261110132
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value1681730.0560.0560.07119655958057675349826327028286797689836976957984799175769292755569101606310368721448073516574105
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

wat:SeniorUnsecuredNotesSeriesB


Debt
Period End2020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272010-03-012010-02-01
Value5.05.00.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.050.05
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesE


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272011-03-15
Value3.973.973.973.970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.03970.0397
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.079.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.479.40.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesE0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesF


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-30
Value3.43.43.43.40.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.0340.034
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.068.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesF0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesG


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-30
Value3.923.923.923.920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.03920.0392
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.078.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.478.40.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesG0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesI


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value3.133.133.133.130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.03130.0313
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.062.662.662.662.662.662.662.662.662.662.662.662.662.662.662.662.662.662.662.6
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesI0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesK


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-02
Value3.443.443.443.440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.03440.0344
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.068.868.868.868.868.868.868.868.868.868.868.868.868.868.868.868.868.868.868.8
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesK0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesL


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312018-12-31
Value3.313.313.313.310.03310.03310.03310.0331
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.066.266.266.266.266.266.2
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesL0.00.00.00.00.00.00.00.0

wat:SeniorUnsecuredNotesSeriesM


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312018-12-31
Value3.533.533.533.530.03530.03530.03530.0353
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.070.670.670.670.670.670.6
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wat:SeniorUnsecuredNotesSeriesM0.00.00.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value15.314.80.315.70.1540.074-0.010.1610.1590.071-0.0260.1670.1080.2030.8670.1150.110.070.0040.1420.1190.1180.0010.1030.1460.153-0.0210.1360.1390.150.0430.130.147-0.171-0.0930.1440.1450.151-0.0060.1680.140.16-0.0010.0580.1710.162
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value768000.0986000.01067000.01388000.01447000.01546000.01455000.01599000.01634000.01687000.01790000.01692000.01737000.02039000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value199.21194.77179.59172.08168.15168.25158.61154.44154.4154.42142.47135.94134.95124.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value346.56266.05238.52238.52238.52215.62238.52238.52238.52238.52208.47208.47208.47194.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice174.0136.6132.8138.6141.8128.2150.4154.4154.5154.5146.3153.4154.5156.1

srt:Minimum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value75.9475.9475.9475.9475.9499.4761.6338.0961.6361.6338.0938.0938.0938.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice38.139.042.344.145.259.138.924.739.939.926.728.028.230.6

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value12000.076000.0014000.00105000.02000.01000.05000.078000.003000.01000.087000.01000.001000.0105000.02000.001000.0135000.0020000.01000.0129000.0000134000.0141000.03000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value041000.000058000.0001000.012000.024000.001000.015000.020000.00020000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.053.90.00.00.055.20.00.020.015.40.00.0100.017.22000.00.00.019.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value917253574040434037404140
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value10499817910210512212215812010879
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNet us-gaap:ValuationAllowanceByDeferredTaxAsset

wat:ForeignNetOperatingLosses


Deferred
Period End2020-12-312019-12-312018-12-31
Value7.08.012
Percentage of DeferredTaxAssetsNet6.78.014.7

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312008-12-312007-12-31
Value2828282828272727262626246.065.9375.8437.0118.0949.2479.964101113141819201921222324262733647171727373737271697877777768
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value605153626168829493101083
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsValuationAllowance us-gaap:ValuationAllowanceByDeferredTaxAsset

wat:ForeignNetOperatingLosses


Deferred
Period End2020-12-312019-12-312018-12-31
Value554851
Percentage of DeferredTaxAssetsValuationAllowance91.593.794.6

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions


Unrecognized
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value364000.0289000.01052000.0371000.0333000.0203000.0629000.0513000.0476000.0325000.02372000.0270000.0231000.0177000.0
Percentage of UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableChangeInMethodCreditLossExpenseReversal

us-gaap:AccountsReceivableChangeInMethodCreditLossExpenseReversal


Accounts
Period End2020-12-312020-09-262020-06-272020-03-28
Value000985000.0
Percentage of AccountsReceivableChangeInMethodCreditLossExpenseReversal0.00.00.0100.0

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentForAmortization


Adjustment
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value141514141313131312121212121211111110111110111111111111121211
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value1064000.01561000.0-569000.01883000.03901000.01749000.0-2657000.02035000.01102000.02324000.02604000.0397000.0745000.01033000.01198000.0358000.0585000.0643000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfAcquisitionCosts

us-gaap:AmortizationOfAcquisitionCosts


Amortization
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value1.8091.842.6872.6572.6572.6182.6182.6252.6252.5292.6192.6192.2642.2642.2812.2812.3372.1142.1141.6021.6591.6391.6821.6931.6931.7291.7292.3582.4762.4112.6442.5762.5732.52.4742.6162.7252.6462.647
Percentage of AmortizationOfAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfDeferredCharges

us-gaap:AmortizationOfDeferredCharges


Amortization
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value151515151413131312131212121312111210.0111211111112111112121212
Percentage of AmortizationOfDeferredCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-31
Value6945000.0
Percentage of AssetImpairmentCharges100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

wat:Medimass


Business
Period End2020-12-31
Value3000000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0

us-gaap:ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination

us-gaap:ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination


Contract
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value2.58389-20.98-5.505-8.90746-22.737-19.746-2.86757-20.364-17.049-4.96245
Percentage of ContractWithCustomerAssetIncreaseDecreaseForContractAcquiredInBusinessCombination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized

us-gaap:ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized


Contract
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value68182101857138-19.674-23.06994134-8.645-6.82138147
Percentage of ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value6594203658822.0521.989577119.083449311
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

wat:SeniorUnsecuredNotesSeriesH, us-gaap:LondonInterbankOfferedRateLIBOR


Debt
Period End2021-04-032020-03-28
Value1.250.0125
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value-261000.0-262000.0-407000.0-397000.0-382000.0-385000.0-132000.0-132000.0-132000.0-135000.0-165000.0-167000.0-171000.0-177000.0-245000.0-248000.0-235000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value-4000.0-5000.0-5000.0-4000.0-5000.0-5000.0-4000.0-5000.0-5000.0-5000.0-5000.0-4000.0-2000.0-8000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value-39000.0-41000.0-41000.0-41000.0-41000.0-40000.05000.0-38000.0-37000.0-37000.0-15000.0-30000.0-32000.0-31000.0-28000.0-47000.0-47000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit975.0820.0820.01025.0820.0800.0-125.0760.0740.0740.0300.0750.01600.0387.50.00.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value0.2550.2550.2180.2140.220.2190.1750.1770.1770.1770.1760.1770.1750.1780.1470.1460.147
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value0.4640.4660.4880.4760.4540.4560.5380.5350.5380.5430.5320.4860.4810.4930.4380.4340.414
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets182.0182.7223.9222.4206.4208.2307.4302.3304.0306.8302.3274.6274.9277.0298.0297.3281.6

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value139000.0139000.0178000.0180000.0177000.0176000.0194000.0194000.0230000.0159000.0159000.0159000.0162000.0156000.0154000.0155000.0159000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value312000.0315000.0377000.0353000.0338000.0345000.0444000.0426000.0430000.0434000.0457000.0406000.0416000.0428000.0406000.0386000.0368000.0
Percentage of DefinedBenefitPlanInterestCost224.5226.6211.8196.1191.0196.0228.9219.6187.0273.0287.4255.3256.8274.4263.6249.0231.4

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value0.1120.1120.1210.1590.1030.1030.140.1360.1560.1190.1190.120.1360.1020.1430.1460.182
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value1.2171.231.6751.3731.321.3332.6921.0661.0621.0711.4191.3681.4131.4551.6971.4641.382
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost1086.61098.21384.3863.51281.61294.21922.9783.8680.8900.01192.41140.01039.01426.51186.71002.7759.3

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value232000.0233000.0166000.0197000.0151000.0151000.0125000.0124000.0108000.0142000.0141000.0142000.0151000.0132000.0136000.0137000.0170000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value1147000.01160000.01185000.01140000.01095000.01099000.01101000.01081000.01075000.01082000.01344000.01311000.01339000.01374000.01280000.01311000.01240000.0
Percentage of DefinedBenefitPlanServiceCost494.4497.9713.9578.7725.2727.8880.8871.8995.4762.0953.2923.2886.81040.9941.2956.9729.4

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value18161916171511131612131414161514181212121312121011117.63917128.819109.7169.6048.487109.9339.4057.7639.2649.3289.2998.648.5248.7798.6778.441
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DerivativeGainOnDerivative

us-gaap:CrossCurrencyInterestRateContract, us-gaap:InterestIncome


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value3.3733.8274.0213.7773.7843.7143.8612.6982.9232.2271.7860.927
Percentage of DerivativeGainOnDerivative100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-7.699-1.0874.3466.1474.608-0.0326.947-5.309-3.422.006-7.1475.705-21.4118.5882.4679.7
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate us-gaap:StatementGeographical, us-gaap:TaxPeriod, wat:Agreement

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

country:SG, wat:AprilTwoThousandAndTwentyOneToMarchTwoThousandAndTwentySix, wat:NewContractualArrangement


Effective
Period End2021-07-032021-04-032020-03-31
Value05.05.0
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate0.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-07-032021-04-03
Value010000000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss0.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss


Equity
Period End2020-09-262020-06-27
Value01000000.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss0.0100.0

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

us-gaap:GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignExchangeContract, us-gaap:CostOfSales


Gain
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-782000.0914000.01697000.01921000.01145000.0-1656000.02054000.0-3973000.0-2908000.0-17000.0-3511000.0-28000.0-4201000.0952000.0828000.01613000.0
Percentage of GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:GainLossRelatedToLitigationSettlement


Gain
Period End2020-12-312020-09-262020-06-302020-06-272020-03-312020-03-282018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302016-12-312015-12-312012-12-312012-06-30
Value00-514000.0-514000.0-666000.0-666000.0-322000.0-924000.0-924000.001672000.0-1096000.00-10018000.0-10018000.0-3524000.0-3939000.0-4000000.0-3000000.0
Percentage of GainLossRelatedToLitigationSettlement0.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-07-032021-04-03
Value-2000000.06000000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0

us-gaap:ImpairmentOfIntangibleAssetsFinitelived us-gaap:BusinessAcquisition

us-gaap:ImpairmentOfIntangibleAssetsFinitelived

wat:Medimass


Impairment
Period End2020-12-31
Value10000000.0
Percentage of ImpairmentOfIntangibleAssetsFinitelived100.0

us-gaap:IncomeTaxHolidayAggregateDollarAmount

us-gaap:IncomeTaxHolidayAggregateDollarAmount


Income
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-02
Value5.04.09.05.05.02.09.06.05.04.07.08.07.06.07.07.06.05.07.06.06.04.0
Percentage of IncomeTaxHolidayAggregateDollarAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxHolidayIncomeTaxBenefitsPerShare

us-gaap:IncomeTaxHolidayIncomeTaxBenefitsPerShare


Income
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-02
Value0.080.060.130.090.070.040.140.080.070.060.10.090.10.070.080.090.080.060.090.080.070.05
Percentage of IncomeTaxHolidayIncomeTaxBenefitsPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationDeductionsOther

us-gaap:IncomeTaxReconciliationDeductionsOther


Income
Period End2020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-07-012017-04-01
Value3.7981.00.02.02.2110.00.07.03.0892.01.06.04.07.0
Percentage of IncomeTaxReconciliationDeductionsOther100.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-5.57-29.758931250-15.825109.94623-33.4852.54-15.789-43.59-24.824261115-50.07236112.532-43.63223263.231-25.518-17.5749.6145.764-11.491-3.441191.233-45.3419-0.2352.57-21.3060.09220-5.816-26.836153.9541813
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value5.0444.2193510-5.493-2.7457.168-5.75819-4.637-6.2820.394-1.5521.393211.2160.1141.04-3.5911.150.0963.421-1.982.2174.5064.8913.460.4043.3767.1691.8291.1852.2726.181-2.2841.6730.911-1.7738.0482.426-0.1581.755-3.728-6.5443.5784.222
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-43.41-1.5637.607-19.039-38.5319.2381.046-11.237-23.558-6.162-23.37418-28.1855.973.623-4.789-3.4895.7950.375-0.7633.8885.48612-14.2593.9389.36717-6.361-17.083.330.777-7.933-2.3051.777-11.355-5.8872.193-0.3046.4291.755-1.3834.413.9960.7140.353-1.168
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value7.523.08102.0779.6635.0364.659-5.3688.083.547-8.6455.8272.215133.3793.6915.1964.0571.95.718-1.775-1.03720-11.7797.821.776-3.5642.51-1.178.008-11.2043.4422.2230.5064.1772.46-0.8341.3330.223-0.469-1.785-2.278-3.727-1.863-1.4914.679
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-07-032021-04-032020-12-312020-09-302020-09-262020-06-302020-06-272020-03-312020-03-282019-12-312019-09-302019-09-282019-06-302019-06-292019-03-312019-03-302018-12-312018-09-302018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-06-302017-04-012017-03-312016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-032009-12-312009-10-032009-07-042009-04-04
Value3.6984.1014.2244.0074.0074.0034.0034.0364.0364.4173.4553.4555.8715.8718.3158.315109.8029.8028.8889.666109.5168.378.377.3437.3436.3465.4264.8274.0873.1352.7362.52.342.1031.7621.71.4581.0750.9461.1791.1871.2241.1841.0310.7690.4840.6130.8130.7130.5620.5160.4480.3290.7480.7850.5950.908
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value-0.0095.825130.60111-19.3446.034-4.894-7.0317.522-18.3425.309-47.159236.939263829-54.0422.48-31.48516-17.159-10.93121-64.348-45.657-48.6715.883261327-0.765-28.7137.46823-31.35217-22.956-31.7419.94732-12.21239-28.42-23.41
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax


Other
Period End2021-07-032021-04-032019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value-5000.0-10000.00-8000.0710000.02344000.0590000.01631000.01453000.0-2976000.0-3494000.0318000.0794000.0588000.0-3498000.0-1393000.01881000.03289000.0-4222000.01814000.0-2184000.02767000.0-623000.0-645000.0594000.0142000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-07-032021-04-032019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value-5000.0-10000.061000.0-6000.0553000.01797000.01158000.01249000.01617000.0-2883000.0-3318000.0309000.0717000.0566000.0-3279000.0-1332000.01805000.03196000.0-4094000.01746000.0-2097000.02651000.0-591000.0-603000.0561000.0144000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-01
Value0.0276.7378.7330.21411-18.9460.11-4.485-6.4529.3277.8227.108-44.2721102738
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0.0410.922-4.407-0.387-0.060.398-5.9850.4150.0260.008250.55
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent151.913.7-50.5-180.8-0.5-2.1-5440.9-9.3-0.40.1319.77.7

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-07-032021-04-032019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-0.005-0.010.061-0.0060.5531.7971.1581.249
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-18.5-0.155.50.1-8.619.314.817.6

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0.0276.7378.7330.21411-18.9460.11-4.485-6.4529.3277.8227.108
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-0.0095.825130.60111-19.3446.034-4.894-7.0317.522-18.3425.309
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-33.386.5150.5280.8100.5102.15485.5109.1109.080.6-234.574.7

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-03-302012-12-312012-09-292012-06-30
Value0.26-1.0545.9060.6540.522-0.2969.525-0.2670.0410.0616.8290.177-0.6690.385-9.8620.4991.0750.4566.1010.183-0.5011.00.8790.5110.555-2.136330.00.00.9310.08.8350.067-0.793
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value0.042-1.275.5450.3020.186-0.6367.817-0.355-0.049-0.032-39.243-0.727-1.578-0.522-11.158-0.3950.153-0.385.29-0.649-1.3110.19-0.244-0.967-0.366-3.05732-0.516-0.5160.415-28.84-0.991-0.973-0.7626.743-0.254-1.114
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value-0.041-0.9224.4070.3870.06-0.3985.985-0.415-0.026-0.008-25.006-0.55-1.272-0.406-6.739-0.2120.196-0.0363.555-0.377-0.6980.468-1.343-0.642-0.243-2.02622-0.116-0.1810.283-17.644-0.624-0.613-0.484.383-0.165-0.724
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-30
Value83000.0-348000.01138000.0-85000.0126000.0-238000.01832000.060000.0-23000.0-24000.0-14237000.0-177000.0-306000.0-116000.0-4419000.0-183000.0-43000.0-344000.01735000.0-272000.0-613000.0-278000.01099000.0-325000.0-123000.0-1031000.010147000.0-400000.0-335000.0132000.0-11196000.0-367000.0-360000.0-282000.02360000.0-89000.0-390000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax


Other
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-29
Value0.2180.2160.3610.3520.3360.341.7080.0880.090.093460.9040.9090.9071.2960.8940.9220.8360.8110.8320.810.811.1231.4780.9210.9211.3380.5160.5160.5160.9520.9910.9730.7622.0920.321
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromDerivativeInstrumentFinancingActivities

us-gaap:PaymentsForProceedsFromDerivativeInstrumentFinancingActivities


Payments
Period End2021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value0.578-4.91-2.772-4.791-2.767-3.709-2.246-2.4-2.2544.5030.0234.095-1.937-0.593-2.871-1.8681.4380.8761.9945.6361.8952.606-0.81-2.5433.348-0.540.266-0.2140.314
Percentage of PaymentsForProceedsFromDerivativeInstrumentFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromProductiveAssets

us-gaap:PaymentsForProceedsFromProductiveAssets


Payments
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value37394728455153453925312720153019171722222524272623212026222125313030312631153416181615261110
Percentage of PaymentsForProceedsFromProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-07-032021-04-032019-12-312016-12-312016-10-012015-12-312015-10-032014-12-312013-12-312012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value03637000.0000073000.0000497000.00003305000.049000.01169000.00025000.01473000.0
Percentage of PaymentsOfDebtIssuanceCosts0.0100.00.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2020-12-312020-09-262020-06-272020-03-282016-12-312015-12-312015-10-032014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-31
Value3.8810.00.076-0.045140.03.336200.03.61514260.00.00.0120.0180.1
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.00.0100.00.0100.0100.0

us-gaap:PaymentsToAcquireIntangibleAssets us-gaap:ProductOrService, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:PaymentsToAcquireIntangibleAssets

wat:SelectSeriesMrt, us-gaap:LicensingAgreements


Payments
Period End2021-06-30
Value7.0
Percentage of PaymentsToAcquireIntangibleAssets100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2020-12-312020-09-262019-12-312019-09-282018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value2000000.01000000.02000000.02250000.004000000.003215000.00007000000.0
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.00.0100.00.0100.00.00.00.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value281637132.99611194.1822.49827107.5321024241419383.61735158.191234.1711311302.6165.349353316117.4787.5852.5994.13114142.7132814737.667108.852
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLegalSettlements us-gaap:LitigationStatus

us-gaap:ProceedsFromLegalSettlements

us-gaap:SettledLitigation


Proceeds
Period End2021-07-03
Value3000000.0
Percentage of ProceedsFromLegalSettlements100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments


Proceeds
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-29
Value143.139190.2150.3971.1390.0874044865555096741085513700557750446571474512482130359759421451540512
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value2267000.0775000.0-16877000.01162000.06664000.03506000.0-1313000.02221000.01634000.02159000.03581000.0927000.02881000.0-1056000.01207000.0974000.02207000.0-636000.0525000.0-1575000.02182000.0159000.0-14000.0540000.0452000.01059000.02010000.0556000.0627000.0463000.0418000.0936000.0366000.0536000.0998000.0591000.0654000.01022000.01512000.0296000.0214000.0904000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostIncurredCost us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringAndRelatedCostIncurredCost

wat:SeveranceLeaseTerminationAndOtherRelatedCosts


Restructuring
Period End2021-07-032021-04-032020-09-262020-06-27
Value3.0186.018
Percentage of RestructuringAndRelatedCostIncurredCost100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value11000.03000.02000.03000.04000.011000.03000.08000.04000.06000.06000.06000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value6000.033000.07000.01000.021000.03000.01000.01000.0-1000.002000.03000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod54.51100.0350.033.3525.027.333.312.5-25.00.033.350.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value9.88210.35-7.01.990.26185.65-1.131.635.298.360.81117.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-292018-06-302018-03-31
Value1.54228.24-12.72-1.96-48.08281.393.39-11.71006.62181.83
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue15.6108.5181.7-98.5-18492.3151.6-300.0-718.40.00.0817.3155.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value0250.150-5.390235.06000183.410-0.960195.69-0.424.090136.43000130.35000113.8800099.2200
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.0100.00.0100.00.00.00.0100.00.0100.00.0100.0100.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-28
Value3.28279.6600.260206.73-0.64-0.33-2.24238.520-0.41-0.21208.470.290.080.15154.080.4100.07117.6800.630.08118.75000112.593.030.18
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0111.80.0-4.80.087.90.00.00.0130.00.042.70.0106.5-69.02.00.0112.90.00.00.090.30.00.00.0104.30.00.00.0113.50.00.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0315.98000190.4500-18.53391.21-17.810-14.2267.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0126.30.0-0.00.081.00.00.00.0213.30.0-0.00.0136.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-28
Value1000.080000.01000.01000.01000.085000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-28
Value05000.00-1000.0037000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod0.06.20.0-100.00.043.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-28
Value0.12182.140.310.280.4161.44
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-28
Value0242.94000184.51
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0133.40.00.00.0114.3

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-02
Value00.801.18600.0140000.0250000.0270000.0220.004000.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.00.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value00.201.28700.0130000.0240.004000.020.001000.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.025.00.0108.50.092.90.00.00.096.00.00.00.074.10.00.00.068.2

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-02
Value-0.633.1027.53500.2650.00200.0010.2420.021000.232-0.003-0.00200.232-0.039000.286
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate100.0100.00.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.00.00.0100.0

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value038.7024.84900.2510000.235-0.01400.0540.18-0.023000.232
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate-0.0116.90.090.20.094.70.00.00.097.1-66.70.00.077.6766.7-0.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-31
Value103000.0125000.049000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-29
Value10.61183.9815.813.362.79170.120.56.03-0.20.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-29
Value0224.370030.05208.47044.2600
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice0.0122.00.00.01077.1122.50.0734.0-0.00.0

srt:Minimum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282018-12-312018-09-29
Value0139.51000128.930000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice0.075.80.00.00.075.80.00.0-0.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value20000.0139000.0040000.00227000.07000.003000.0136000.0174000.07000.07000.0133000.0172000.010000.00207000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-01
Value-0.2191.630.211.23061.7-0.10-0.1261.971.9-0.27-0.1258.385.240.1040.392.810
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value9.29159.13.85-0.92-0.26125.761.951.041.5108.570.481.35
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0238.52000208.47000208.4700
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice0.0149.90.0-0.0-0.0165.80.00.00.0192.00.00.0

srt:Minimum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value099.2200061.6300038.0900
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice0.062.40.0-0.0-0.049.00.00.00.035.10.00.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value3.6277.320-0.960216.08-0.930-0.78232.08-8.59-0.6-0.69206.6619.01.50149.74
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value65.76280.8000235.06000238.5200
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice1826.7101.30.0-0.00.0108.8-0.00.0-0.0102.8-0.0-0.0

srt:Minimum, us-gaap:StockOption


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0250.150-14.740203.37000183.410-4.36
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice0.090.20.01535.40.094.1-0.00.0-0.079.0-0.0726.7

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:Range, us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

srt:Maximum, wat:PerformanceStockUnitsPsu


Sharebased
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value0200.00198.002.00002.000
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.0100.00.0100.00.00.00.0100.00.00.0

us-gaap:StandardProductWarrantyAccrualPayments

us-gaap:StandardProductWarrantyAccrualPayments


Standard
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value2277000.02582000.01778000.01717000.02809000.02619000.01782000.01806000.01950000.02338000.0-1142000.02786000.01948000.02167000.015934000.0-2454000.0-2161000.0-2208000.0-2798000.0-2196000.0-2521000.0-2198000.0-2314000.0-2022000.0-1814000.0-2157000.0-2071000.0-2056000.0-1798000.0-1919000.0-2084000.0-1818000.0-1854000.0-2101000.0-1964000.0-2340000.0-2037000.0-1776000.0-2352000.0-2029000.0-1867000.0-1941000.0-2264000.0-1355000.0-1360000.0-1476000.0
Percentage of StandardProductWarrantyAccrualPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued


Standard
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312010-10-022010-07-032010-04-03
Value2.3822.3372.4671.8651.9061.6712.2691.72.0711.5-1.0352.481.8211.7672.4592.4452.0271.8152.6542.8042.6161.6812.5562.091.9821.7622.8562.0621.4781.7523.0821.6741.3062.4041.4322.9721.4761.3323.1142.2262.2322.6032.7691.8481.5921.409
Percentage of StandardProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value22000.011000.012000.010000.012000.09000.010000.08000.015000.010000.011000.010000.014000.010000.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value1000.087000.01000.01000.02000.0133000.01000.01000.01000.0104000.012000.08000.01000.0123000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:AwardType

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockOption


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-30
Value135000.095000.0272000.097000.06000.081000.0150000.017000.00239000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementClassOfStock

us-gaap:CommonStock


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value135000.095000.0272000.097000.06000.081000.0150000.019000.00239000.081000.052000.083000.0222000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0111.80.0100.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value5156000.01855000.01938000.01641000.02216000.01736000.02025000.01803000.02498000.01670000.02034000.01789000.02486000.01565000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value5156000.01855000.01938000.01641000.02216000.01736000.02025000.01803000.02498000.01670000.02034000.01789000.02486000.01565000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value7.2367.6289.2439.5528.8779.0159.7179.6339.2449.7099.259.1889.0099.784
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value7.2367.6279.2439.5528.8779.0139.7179.6329.2449.7089.259.1889.0099.782
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.00.0010.00.00.00.0020.00.0010.00.0010.00.00.00.002
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value231535120.77910172.3780.0268.035.7448.07222
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value231535120.77910172.3780.0268.0295.7438.07122
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value0.0010.0010.0030.0010.00.0010.0010.0010.00.0020.0010.0010.0010.002
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockSharesAcquired us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockSharesAcquired

wat:January2019Program


Treasury
Period End2021-07-032021-04-032020-09-262020-06-272020-03-28
Value0.5110.00.011
Percentage of TreasuryStockSharesAcquired100.0100.00.00.0100.0

wat:ProgramsAuthorizedByBoardOfDirectors


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-10-032015-07-042015-04-042014-09-272014-06-282014-03-29
Value0.60.60.00.00.00.82.52.72.63.32.71.41.41.30.40.50.70.60.70.70.90.8
Percentage of TreasuryStockSharesAcquired120.05.10.00.00.07.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312011-12-312011-10-012011-07-022011-04-02
Value1651800.0560.0560.071176561588561755521263270282781448167
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:ShareRepurchaseProgram

wat:January2019Program


Treasury
Period End2021-07-032021-04-032020-09-262020-06-272020-03-28
Value20026000.00.02500
Percentage of TreasuryStockValueAcquiredCostMethod120.51439.20.00.01418.6

wat:ProgramsAuthorizedByBoardOfDirectors


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-10-032015-07-042015-04-042014-09-272014-06-282014-03-29
Value1661730.00.00.01676006005537474912632712758579848085779286
Percentage of TreasuryStockValueAcquiredCostMethod100.095.80.00.00.094.8106.8102.098.598.994.299.8100.197.40.00.00.00.00.00.00.00.0

wat:RelatedToVestingOfRestrictedStockUnits


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302015-10-032015-07-042015-04-042014-09-272014-06-282014-03-292013-09-28
Value0.08.0-1.01.00.09.00.00.00.08.01.01.00.08.02.01.00.00.06.00.00.07.00.0
Percentage of TreasuryStockValueAcquiredCostMethod0.04.4-1785.71785.70.05.10.00.00.01.10.20.40.02.80.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementClassOfStock

us-gaap:TreasuryStock


Treasury
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value1651800.0560.0560.071176561588561755521263270282
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations

us-gaap:UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations


Unrecognized
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-31
Value103000.095000.0257000.0175000.0151000.0101000.088000.068000.062000.043000.0247000.0-2000.0108000.083000.0
Percentage of UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-07-032021-04-032020-09-262020-06-272020-03-282019-09-282019-06-292019-03-302018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-10-012016-07-022016-04-022015-10-032015-07-042015-04-042014-09-272014-06-282014-03-292013-09-282013-06-292013-03-302012-09-292012-06-302012-03-312011-10-012011-07-022011-04-022010-10-02
Value472000.0372000.0301000.0240000.0394000.0542000.0505000.0711000.0561000.0605000.0832000.0809000.0777000.0696000.0711000.0651000.0699000.0748000.0768000.0727000.0738000.0715000.0896000.01179000.01094000.01166000.01040000.01064000.01277000.01372000.01609000.01664000.01572000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:CorrelationCoefficient us-gaap:AwardType

wat:CorrelationCoefficient

wat:PerformanceStockUnitsPsu


Correlation
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value045.8036.23400.3660000.342-0.0130-0.0020.374-0.007
Percentage of CorrelationCoefficient0.0100.00.0100.00.0100.00.00.00.0100.0100.00.0100.0100.0100.0

wat:DebtInstrumentInterestCoverageRatio us-gaap:LongtermDebtType

wat:DebtInstrumentInterestCoverageRatio

us-gaap:UnsecuredDebt


Debt
Period End2021-07-032021-04-03
Value03.5
Percentage of DebtInstrumentInterestCoverageRatio0.0100.0

wat:EarningsPerShareDilutedAdjustment

wat:EarningsPerShareDilutedAdjustment


Earnings
Period End2021-07-032021-04-032020-12-312020-09-262019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-28
Value-0.02-0.01-0.01-0.01-0.02-0.02-0.01-0.01-0.01-0.01-0.02-0.02-0.02-0.02-0.01-0.02-0.02-0.02-0.01-0.02-0.02-0.01-0.01-0.02-0.02-0.01
Percentage of EarningsPerShareDilutedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:EffectiveTaxRateReconciliationDeductionsRestructuringCharges

wat:EffectiveTaxRateReconciliationDeductionsRestructuringCharges


Effective
Period End2020-09-262020-06-272020-03-28
Value1000000.01000000.04000000.0
Percentage of EffectiveTaxRateReconciliationDeductionsRestructuringCharges100.0100.0100.0

wat:GuaranteedPaymentsReceived us-gaap:IncomeStatementLocation

wat:GuaranteedPaymentsReceived

us-gaap:OtherIncome


Guaranteed
Period End2021-07-03
Value10000000.0
Percentage of GuaranteedPaymentsReceived100.0

wat:IntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationAdjustments

wat:IntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationAdjustments


Intangible
Period End2021-07-032021-04-032020-12-31
Value4.0-19.0-59.0
Percentage of IntangibleAssetsAccumulatedAmortizationForeignCurrencyTranslationAdjustments100.0100.0100.0

wat:IntangibleAssetsGrossForeignCurrencyTranslationAdjustments

wat:IntangibleAssetsGrossForeignCurrencyTranslationAdjustments


Intangible
Period End2021-07-032021-04-032020-12-31
Value6.0-27.0-83.0
Percentage of IntangibleAssetsGrossForeignCurrencyTranslationAdjustments100.0100.0100.0

wat:PaymentsToAcquireUnaffiliatedCompanies

wat:PaymentsToAcquireUnaffiliatedCompanies


Payments
Period End2020-12-312020-09-262019-12-312019-09-282018-12-31
Value2293000.0500000.01593000.02500000.00
Percentage of PaymentsToAcquireUnaffiliatedCompanies100.0100.0100.0100.00.0

wat:PercentageOfPrepaymentOfAggregatePrincipalPortionOfDebt us-gaap:DebtInstrument, wat:PrepaymentPeriod

wat:PercentageOfPrepaymentOfAggregatePrincipalPortionOfDebt

wat:SeniorUnsecuredNotes, wat:PrepaymentNotLessThanTwentyDaysButNoMoreThanSixtyDays


Percentage
Period End2021-07-032021-04-03
Value010.0
Percentage of PercentageOfPrepaymentOfAggregatePrincipalPortionOfDebt0.0100.0

wat:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies us-gaap:AwardType

wat:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies

wat:PerformanceStockUnitsPsu


Share
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-01
Value034.7025.83900.2610000.2620.001000.258-0.005000.261
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRateOfPeerCompanies0.0100.00.0100.00.0100.00.00.00.0100.0100.00.00.0100.0100.00.00.0100.0

wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet

us-gaap:ForeignExchangeContract, us-gaap:CostOfSales


Unrealized
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-30
Value-0.569-0.7530.2080.808-0.6781.325-0.252-0.633-3.0440.5260.992-0.005-0.105-0.9850.235-1.258
Percentage of UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet us-gaap:DerivativeInstrumentRisk, us-gaap:OtherComprehensiveIncomeLocation

us-gaap:CrossCurrencyInterestRateContract, us-gaap:OtherComprehensiveIncome


Unrealized
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-4.22921-64.67119-5.6155.522-11.36715-6.0227.120.3260.767
Percentage of UnrealizedGainLossOnForeignCurrencyDerivativesRecordedInEarningsNet743.2-2821.2-31091.82423.5828.2416.84510.7-2503.5197.81353.632.9-15340.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-12-31
Value10820
Percentage of EntityPublicFloat100.0

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccruedIncomeTaxesNoncurrent


Accrued
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312016-12-312014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value31935735735635639439439339343143042941745745610202223242519212224707172727777787772
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312015-12-31
Value1413141213129.568.2168.037.4987.6636.6866.1566.1326.1096.0995.4835.1335.144.617
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012010-12-31
Value259230465754443650253563103415561714298120061949186317631694162515801494140613691311123012251171109210611000746
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312015-12-31
Value4039383433293032333333373635353332323035
Percentage of AssetsFairValueDisclosure15.817.284.360.060.966.383.165.613.26.03.22.42.10.01.20.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value2181907.2872221146.1431721952910011518167720262946284227262601243224012265223321051763
Percentage of AssetsFairValueDisclosure84.282.815.740.039.133.716.934.486.894.096.897.697.90.098.80.00.00.00.00.00.00.00.0100.0

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecurities


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-31
Value2181906.45122163.811.6420.213218522999151716772026294528422724260124322368222421752041
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value75586.45122163.811.6420.2135752108179238371
Percentage of AvailableForSaleSecurities34.830.8100.0100.0100.0100.0100.0100.026.510.110.911.814.212.6

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value13011994367723106311981975
Percentage of AvailableForSaleSecurities59.762.943.270.472.370.171.467.1

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value12126698164271237591
Percentage of AvailableForSaleSecurities5.56.330.318.916.417.914.220.1

us-gaap:AvailableForSaleSecurities us-gaap:FinancialInstrument

us-gaap:BankTimeDeposits


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value75586.45122163.811.6420.2135752108179238371
Percentage of AvailableForSaleSecurities34.830.8100.0100.0100.0100.0100.0100.026.510.110.911.814.212.6

us-gaap:CorporateDebtSecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value13011994367723106311981975
Percentage of AvailableForSaleSecurities59.762.943.270.472.370.171.467.1

us-gaap:USTreasurySecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value12126698164271237591
Percentage of AvailableForSaleSecurities5.56.330.318.916.417.914.220.1

us-gaap:AvailableForSaleSecurities us-gaap:InvestmentType

us-gaap:CashEquivalents


Available
Period End2021-07-032021-04-032019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value14640.2130.2131303960122171190194
Percentage of AvailableForSaleSecurities6.733.913.0100.059.87.66.18.110.29.46.6

us-gaap:ShortTermInvestments


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value2031256.45122163.811.429874829381394150618352751
Percentage of AvailableForSaleSecurities93.366.1100.0100.0100.0100.087.040.292.493.991.989.890.693.4

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value4000.07000.041000.0134000.058000.0424000.0457000.0399000.01049000.01635000.01638000.01082000.0819000.02145000.03322000.01752000.0245000.0441000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value3000.07000.037000.0121000.041000.0424000.0384000.0897000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax75.0100.090.290.370.7100.084.085.5

us-gaap:USTreasurySecurities


Available
Period End2021-07-032019-06-292019-03-302018-12-312018-06-302017-12-31
Value1000.04000.012000.016000.03000.082000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax25.09.89.027.60.77.8

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:CashEquivalents


Available
Period End2021-04-032019-06-292019-03-302018-12-312018-06-302018-03-31
Value1000.05000.01000.001000.01000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax14.312.20.70.00.20.3

us-gaap:ShortTermInvestments


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value4000.06000.036000.0133000.058000.0424000.0456000.0398000.01049000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.085.787.899.3100.0100.099.899.7100.0

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value18000.017000.033000.0836000.03104000.04060000.05724000.07119000.04793000.01885000.02206000.02444000.02769000.0597000.0381000.0692000.02474000.0845000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value18000.017000.033000.0663000.02760000.03130000.04291000.03066000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.079.388.977.175.064.0

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

us-gaap:CashEquivalents


Available
Period End2021-07-032021-04-032019-03-302018-12-312018-09-292018-03-312017-12-31
Value1000.04000.001000.03000.02000.01000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax5.623.50.00.00.10.00.0

us-gaap:ShortTermInvestments


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value17000.013000.033000.0836000.03103000.04057000.05724000.07117000.04792000.0
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax94.476.5100.0100.0100.099.9100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAmortizedCost

us-gaap:AvailableForSaleSecuritiesAmortizedCost


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value2181906.45122163.811.6420.21321852210021521168220332949284227252602243423662221217420431700
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAmortizedCost us-gaap:FinancialInstrument

us-gaap:BankTimeDeposits


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value75586.45122163.811.6420.2135752108179238371
Percentage of AvailableForSaleSecuritiesAmortizedCost34.830.8100.0100.0100.0100.0100.0100.026.510.010.811.814.212.6

us-gaap:CorporateDebtSecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value13011994368725106612021977
Percentage of AvailableForSaleSecuritiesAmortizedCost59.762.943.270.472.470.171.467.0

us-gaap:USTreasurySecurities


Available
Period End2021-07-032021-04-032019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value12126698164272239593
Percentage of AvailableForSaleSecuritiesAmortizedCost5.56.330.318.916.417.914.220.1

us-gaap:AvailableForSaleSecuritiesAmortizedCost us-gaap:InvestmentType

us-gaap:CashEquivalents


Available
Period End2021-07-032021-04-032019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value14640.2130.2131303960122171190194
Percentage of AvailableForSaleSecuritiesAmortizedCost6.733.913.0100.059.87.66.08.110.29.46.6

us-gaap:ShortTermInvestments


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value2031256.45122163.811.429874829411398151118422755
Percentage of AvailableForSaleSecuritiesAmortizedCost93.366.1100.0100.0100.0100.087.040.292.494.091.989.890.693.4

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value2031646.45122163.811.6420.213211437797104310021226172215741591145613881284125112141137872
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value2181906.45122163.811.6420.2132185229991338143917242574243924282295223221462058206819661635
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue

wat:Andrewalliance


Business
Period End2020-12-31
Value3525000.0
Percentage of BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue100.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationContingentConsiderationLiability

wat:IntegratedSoftwateSolutionsLimited


Business
Period End2020-12-31
Value1000000.0
Percentage of BusinessCombinationContingentConsiderationLiability100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

wat:Andrewalliance


Business
Period End2020-12-31
Value713000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

wat:Andrewalliance


Business
Period End2020-12-31
Value611000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

wat:Andrewalliance


Business
Period End2020-12-31
Value6.96
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory

wat:Andrewalliance


Business
Period End2020-12-31
Value669000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

wat:Andrewalliance


Business
Period End2020-12-31
Value757000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessCombinationSeparatelyRecognizedTransactions

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

wat:Andrewalliance


Business
Period End2020-12-31
Value82
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value175149147153132132138151138115103
Percentage of CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsAndShortTermInvestments


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012010-12-31
Value6648104433973563943374056761167173520842248255233943255312629662813271326002505239923112209210920551946191818531804169916501590153914481392130712811130901
Percentage of CashCashEquivalentsAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsAndShortTermInvestments dei:LegalEntity

wat:ForeignSubsidiary


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value353317364359288221249303421411471942116516563326
Percentage of CashCashEquivalentsAndShortTermInvestments53.239.182.290.480.956.173.974.862.335.227.145.251.864.998.0

us-gaap:CashCashEquivalentsAndShortTermInvestments us-gaap:InvestmentType

wat:InvestmentsHeldInCurrenciesOtherThanUSDollars


Cash
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value267256254262204156176235256263251341324304
Percentage of CashCashEquivalentsAndShortTermInvestments40.231.657.366.057.339.652.258.037.922.514.516.414.49.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value331328239249267269213235260261204224240247192210173170
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent us-gaap:BalanceSheetLocation

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities


Contract
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value47474239545138384039393826
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:CreditFacility

us-gaap:DebtInstrumentCarryingAmount

wat:CreditAgreement


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312018-12-31
Value300300400615740940625590
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wat:RevolvingFacilityAndTermLoan, us-gaap:NotesPayableToBanks


Debt
Period End2021-07-032021-04-032020-12-312020-09-262019-12-31
Value300300400615625
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

us-gaap:NotesPayableToBanks


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value15001.51.41200110085812001500120812081208120812081148498338383428468513538328428533
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtWeightedAverageInterestRate us-gaap:LongtermDebtType

us-gaap:DebtWeightedAverageInterestRate

wat:CreditAgreementsAndUnsecuredDebt


Debt
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value2.712.682.922.680.02620.0290.03390.03620.03740.0380.03830.03640.03590.03510.02980.02820.02790.02680.02550.02450.0240.02160.02110.0231
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-31
Value6633000.06910000.03485000.03663000.03841000.04019000.04203000.04399000.01606000.01717000.01828000.01939000.02049000.02370000.02499000.0
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-31
Value119.6964.654
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0

us-gaap:DeferredTaxAssetsEquityMethodInvestments

us-gaap:DeferredTaxAssetsEquityMethodInvestments


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4492000.03424000.03148000.03465000.04707000.05396000.05819000.03832000.03919000.04941000.05896000.06159000.0
Percentage of DeferredTaxAssetsEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value2377000.03738000.03633000.0
Percentage of DeferredTaxAssetsGoodwillAndIntangibleAssets100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value164151135141163174205217251131119163
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInventory

us-gaap:DeferredTaxAssetsInventory


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value5060000.04824000.04588000.04864000.05235000.04470000.04104000.03651000.03658000.03226000.03093000.02960000.0
Percentage of DeferredTaxAssetsInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign us-gaap:ValuationAllowanceByDeferredTaxAsset

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

wat:ForeignNetOperatingLosses


Deferred
Period End2020-12-31
Value249
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3.4833.8398.727111515181519118.7119.316
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value5.7014.7767.4955.9528.318.223117.163
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value272027212428342529272117
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value7.7739.799.9849.8151918182225222424
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value107.2157.2138.238.814109.3682336302311
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2321191915151618151310
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1414131319181818
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value17182021
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains

us-gaap:DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains


Deferred
Period End2020-12-31
Value10
Percentage of DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-2.349-0.6380.0290.588
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-23.78-20.094-13.321-18.327
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax1012.33149.5-45934.5-3116.8

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.4230.7310.083-0.588
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value24201318
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax996.22818.116851.8-3207.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-31
Value74000.093000.0112000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value358000.0506000.0666000.0530000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax483.8544.1594.60.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-9201000.0-7413000.0-6644000.0-5996000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-25700000.0-20355000.0-12135000.0-21388000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet279.3274.6182.6356.7

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.9711.4663.2841.245
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

country:US


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.250.03420.0440.0394
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.120.01380.01950.0179
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate49.840.444.345.4

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.690.02830.02660.0243
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate us-gaap:RetirementPlanSponsorLocation

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value0.850.790.81
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2521171714
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value119103939685
Percentage of DefinedBenefitPlanBenefitObligation471.4487.9528.8562.9571.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3128267773717369
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value23201918
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter75.473.673.023.7

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.797.427.14658
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter24.626.427.076.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6.4563.8462.63511119.388.9358.144
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.1772.7231.5512.396
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths80.270.858.920.3

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.2791.1231.0849.385
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths19.829.241.179.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value5.9854.3214.4041312111110
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.4362.8843.0382.963
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive74.166.769.021.6

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.5491.4371.36610
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive25.933.331.078.4

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4.7384.1254.128121110109.941
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.2042.7492.8212.089
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour67.666.668.316.2

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.5341.3761.30710
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour32.433.431.783.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4.5464.5194.0251210101010
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.0863.2382.7822.06
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree67.971.769.116.7

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.461.2811.24310
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree32.128.330.983.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4.8775.9553.7121110118.9658.367
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.5394.7462.5521.563
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo72.679.768.813.4

wat:USPensionPlansAndUSRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.3381.2091.1610
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo27.420.331.286.6

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear us-gaap:Range

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear

srt:Maximum


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-30
Value6000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.010000000.010000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum


Defined
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-30
Value3000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.05000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear50.050.050.050.050.050.050.050.050.050.050.050.040.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-9201000.0-7413000.0-6644000.0-5996000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0

us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-25700000.0-20355000.0-12135000.0-21388000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan279.3274.6182.6356.7

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation

country:US


Defined
Period End2020-12-312019-12-31
Value10388
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation wat:DefinedBenefitPlanType

wat:DefineBenefitPlanWithAccumulatedBenefitObligations


Defined
Period End2020-12-312019-12-31
Value8473
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation82.583.7

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets wat:DefinedBenefitPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

wat:DefineBenefitPlanWithAccumulatedBenefitObligations


Defined
Period End2020-12-312019-12-31
Value6860
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0

wat:DefineBenefitPlanWithProjectedBenefitObligations


Defined
Period End2020-12-312019-12-31
Value8042271163
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets117689.6116982.8

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation wat:DefinedBenefitPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

wat:DefineBenefitPlanWithProjectedBenefitObligations


Defined
Period End2020-12-312019-12-31
Value10709392984
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:InvestmentType, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:CashAndCashEquivalents, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value10.00.10.1
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0

us-gaap:DebtSecurities, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value20.00.20.2
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage200.0200.0200.0

us-gaap:DebtSecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value35.00.35
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage350.0350.0

us-gaap:EquitySecurities, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value5.00.050.05
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage50.050.050.0

us-gaap:EquitySecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value60.00.6
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage600.0600.0

wat:InsuranceContractsAndOther, us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-31
Value65.00.650.65
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage650.0650.0650.0

wat:InsuranceContractsAndOther, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value5.00.05
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage50.050.0

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

srt:Maximum, us-gaap:CashAndCashEquivalents, wat:UsRetireeHealthcarePlan


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

srt:Maximum, us-gaap:DebtSecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value50.00.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage500.0500.0

srt:Maximum, us-gaap:EquitySecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value90.00.9
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage900.0900.0

srt:Maximum, wat:InsuranceContractsAndOther, wat:UsRetireeHealthcarePlan


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

srt:Minimum, us-gaap:DebtSecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value20.00.2
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage200.0200.0

srt:Minimum, us-gaap:EquitySecurities, wat:UsRetireeHealthcarePlan


Defined
Period End2020-12-312019-12-31
Value30.00.3
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage300.0300.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:InvestmentType, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:CashAndCashEquivalents, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.00.010.050.08
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0

us-gaap:DebtSecurities, country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value33.00.360.390.35
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations3300.03600.0780.0437.5

us-gaap:DebtSecurities, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value20.00.210.180.16
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations2000.02100.0360.0200.0

us-gaap:EquitySecurities, country:US, us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value67.00.640.610.65
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations6700.06400.01220.0812.5

us-gaap:EquitySecurities, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.00.060.070.07
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations500.0600.0140.087.5

wat:InsuranceContractsAndOther, us-gaap:ForeignPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value74.00.720.70.69
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations7400.07200.01400.0862.5

us-gaap:DerivativeAssetNotionalAmount us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetNotionalAmount

us-gaap:CrossCurrencyInterestRateContract


Derivative
Period End2020-12-312020-06-272020-03-282019-12-312019-09-282019-06-292019-04-302019-03-302018-12-312018-07-31
Value560560560560110110110300300150
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherAssets, us-gaap:CrossCurrencyInterestRateContract


Derivative
Period End2021-07-032021-04-032020-12-312020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value-22.457-20.03-44.9964.392104.485161.0987.121.0930.767
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, us-gaap:ForeignExchangeContract


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.2230.2080.8360.8320.3661.0280.0160.0660.1640.3550.5030.1160.566
Percentage of DerivativeFairValueOfDerivativeAsset-1.0-1.0-1.90.08.310.30.40.414.95.046.015.10.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeContract


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.2230.2080.8360.8320.3661.0280.0160.0660.1640.3550.5030.1160.566
Percentage of DerivativeFairValueOfDerivativeAsset-1.0-1.0-1.90.08.310.30.40.414.95.046.015.10.0

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

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


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.2230.2080.8360.8320.3661.0280.0160.0660.1640.3550.5030.1160.566
Percentage of DerivativeFairValueOfDerivativeAsset-1.0-1.0-1.90.08.310.30.40.414.95.046.015.10.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:DerivativeInstrumentRisk, us-gaap:StatementEquityComponents

us-gaap:CrossCurrencyInterestRateContract, us-gaap:AccumulatedOtherComprehensiveIncome


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-29
Value27234415-4.392-10.007-4.48516-1.098-7.12-1.093-0.767
Percentage of DerivativeFairValueOfDerivativeAsset-124.6-118.6-100.00.0-100.0-100.0-100.0100.0-100.0-100.0-100.0-100.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:OtherCurrentLiabilities, us-gaap:ForeignExchangeContract


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.1420.2410.1850.390.7330.7151.0280.8260.2920.6190.2240.8280.182
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wat:OtherLiabilitiesAssets, us-gaap:CrossCurrencyInterestRateContract


Derivative
Period End2020-09-26
Value-15.19
Percentage of DerivativeFairValueOfDerivativeLiability-3894.9

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:DerivativeInstrumentRisk

us-gaap:CrossCurrencyInterestRateContract


Derivative
Period End2021-07-032021-04-032020-12-312020-09-26
Value22204415
Percentage of DerivativeFairValueOfDerivativeLiability15814.88311.224322.23894.9

us-gaap:ForeignExchangeContract


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.1420.2410.1850.390.7330.7151.0280.8260.2920.6190.2240.8280.182
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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


Derivative
Period End2021-07-032021-04-032020-12-312020-09-26
Value22204415
Percentage of DerivativeFairValueOfDerivativeLiability15814.88311.224322.23894.9

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


Derivative
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292017-12-31
Value0.1420.2410.1850.390.7330.7151.0280.8260.2920.6190.2240.8280.182
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312015-10-032015-07-042015-04-042014-12-312014-09-272014-06-282014-03-292013-12-312013-09-282013-06-292013-03-302012-12-312012-09-292012-06-302012-03-312011-12-312011-10-012011-07-022011-04-022010-12-312009-12-31
Value4835724633224333363164393631694234295741353054392428473430264330262431262627493932285237
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-312018-12-312017-12-312016-12-31
Value37323236
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0100.0

wat:PerformanceStockUnitsPsu


Employee
Period End2020-12-312018-12-31
Value9.014
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions24.343.8

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions


Employee
Period End2020-12-312015-12-312014-12-312013-12-31
Value20504340
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0100.0100.0100.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisObligations

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisObligations


Fair
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302017-12-31
Value1266000.01225000.01185000.02903000.02787000.02672000.02557000.02822000.02707000.02591000.02476000.03701000.03550000.03247000.0
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value1266000.01225000.01185000.02903000.02787000.02672000.02557000.02822000.02707000.02591000.02476000.03701000.03550000.03399000.03247000.03017000.03014000.03010000.03007000.04805000.04608000.04412000.04215000.03612000.0
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisObligations us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Fair
Period End2020-12-312019-12-312018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-012016-07-022016-04-022015-12-312014-12-31
Value3000000.03000000.03399000.03247000.03017000.03014000.03010000.03007000.04805000.04608000.04412000.04215000.03612000.0
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisObligations253.2117.30.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-07-032021-04-032020-12-312020-09-262020-06-272020-03-282019-12-312019-09-282019-06-292019-03-302018-12-312018-09-292018-06-302018-03-312017-12-312017-09-302017-07-012017-04-012016-12-312016-10-01