SNPS


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

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

us-gaap:Revenues

us-gaap:CostOfRevenue
us-gaap:ProductOrService
us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostDepreciationAmortizationAndDepletion

us-gaap:GrossProfit

us-gaap:OperatingExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:SellingAndMarketingExpense

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

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

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

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

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensation

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

snps:AdjustmentsToAdditionalPaidInCapitalEquityForwardContract
us-gaap:StatementEquityComponents

snps:GainOrLossOnAssetsRelatedToDeferredCompensationPlan

snps:IncreaseDecreaseinOperatingLeaseLiabilities
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
snps:NumberOfMajorCustomers
us-gaap:ConsolidationItems
snps:OperatingMargin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

snps:Paymentsforcapitalizedsoftwaredevelopmentcosts

snps:ReductionofOperatingLeaseRightofUseAssets
us-gaap:AcceleratedShareRepurchasesDate
snps:StockRepurchaseProgramPrepaymentDuringPeriod
us-gaap:AcceleratedShareRepurchasesDate
snps:StockRepurchaseProgramPrepaymentDuringPriorPeriodDerivativeSettlement
us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:ConsolidationItems
us-gaap:IncomeStatementLocation

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:AmortizationOfIntangibleAssets
us-gaap:ConsolidationItems
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:StatementBusinessSegments
us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:CapitalizedContractCostAmortization

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:ProductOrService
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:ProductOrService

us-gaap:DeferredIncomeTaxesAndTaxCredits

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

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestIncomeOther

us-gaap:LeaseCost
us-gaap:Range, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityCommitmentFeePercentage

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherDepreciationAndAmortization
us-gaap:ConsolidationItems
us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentsForRepurchaseOfOtherEquity

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfTreasuryStock

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:RepaymentsOfDebt

us-gaap:RestructuringCharges
us-gaap:RestructuringCostAndReserve

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:StockIssuedDuringPeriodSharesTreasuryStockReissued
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued
us-gaap:StatementEquityComponents
us-gaap:AcceleratedShareRepurchasesDate
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType

us-gaap:TreasuryStockSharesAcquired
us-gaap:AcceleratedShareRepurchasesDate
us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod
us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities

us-gaap:VariableLeaseCost
us-gaap:AcceleratedShareRepurchasesDate
snps:AcceleratedShareRepurchaseInitialShareDeliveryAmount

snps:BusinessCombinationDesignServiceArrangement

snps:IncomeTaxReceivableAndPrepaidTax

us-gaap:AccruedIncomeTaxesNoncurrent

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AdditionalPaidInCapital
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByAssetClass, us-gaap:InvestmentType
us-gaap:AvailableForSaleSecurities
us-gaap:InvestmentType
us-gaap:FairValueByAssetClass, us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:StatementBusinessSegments
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:Range
us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsNetNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:DerivativeFairValueOfDerivativeNet

us-gaap:DerivativeNotionalAmount

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:DebtInstrument
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LinesOfCreditCurrent

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:PrepaidExpenseOtherNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:RestrictedCash
us-gaap:Range, us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringAndRelatedCostExpectedCost1
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringReserve

us-gaap:ShortTermBorrowings
us-gaap:AcceleratedShareRepurchasesDate
us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares

us-gaap:UnbilledContractsReceivable

Tables

  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄1111111111111111111111111111111111111NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock████▄▄▄▁▁▁█150150150150149149149148148148150NANANA151NANANA155NANANA155NANANA154NANANA150NANANANANANANANANA
us-gaap:CommonStockSharesOutstanding ▅▅▅▅▄▄▄▄▄▄▅▅▅▅▆▆▆▆███▇██▇▇▇▇▇▆▅▄▃▁▁▃▄150150150150149149149148148148150150150150151151152151155155155153155155154154154154153151150148146143143146149NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▄▄154154NA154153152NA152153149NA154154154NA153154155NA158157157NA157157156NA157156154NA150149147148152153151152150
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▄▄150150NA150149149NA148149149NA150150150NA151152152NA155154154NA155154154NA153153151NA147145143144148149148148146
us-gaap:EarningsPerShareBasic ▅▅▆▅▅▆█▅▅▃▁▅▄▅▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▅▄▅▄▄▄▅▄▄▄▆0.730.691.06999999999999980.670.791.031.70.530.69-0.02-0.79999999999999990.780.350.570.480.430.460.390.320.360.360.420.40.420.410.440.370.340.450.460.189999999999999950.510.140.390.360.550.320.270.270.9
us-gaap:EarningsPerShareDiluted ▅▅▆▅▅▆█▅▅▃▁▅▄▅▅▄▅▄▄▄▄▄▄▄▄▄▄▄▄▅▄▅▄▄▄▅▄▄▄▆0.710.671.03000000000000020.650.771.011.660.520.67-0.02-0.77999999999999990.750.340.560.470.420.450.390.310.350.350.410.390.420.40.430.360.330.440.450.179999999999999940.50.140.390.350.530.310.260.260.88
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █████▇▇▇▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁861834851852836820795779776769696695680652633615605568587555557542539521517478504482499475454443432425386393364336338330
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,snps:SemiconductorAndSystemDesign█▅▇█▆▄▂▁▁▁773748765769753737717708709705NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,snps:SoftwareIntegrity█▇▇▇▇▆▅▃▂▁88858583838277716764NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:License▅▆▇█▆▅▁▃▃▃12915016817714313066999991NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:LicenseAndMaintenance▆▃▂▁▃▃█▄▃▄590556548537558553605570556570NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:TechnologyService█▅▇▇▇▇▄▂▄▁141127134137134136122110120106NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:KR█▁10589NANA84102NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▇▇█▇▇▇▆▆▆▆▅▆▆▅▅▅▄▄▄▄▄▄▄▃▃▂▂▃▃▂▂▂▂▂▁▁404408444407416407381365376384329358350319316316297274304275286277275268243233233234238233213216206197176182NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical snps:AsiaPacificAndOther▆▆▁███▇▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄181169-10728926326324425123223022819219319617616817516815514814213114012614411413211412910811698959686898264NANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical srt:Europe▁█8994NA908383NA909785NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues █████▇▇▇▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁861834851852836820795779776769696695680652633615605568587555557542539521517478504482499475454443432425386393364336338330
us-gaap:CostOfRevenue ██▇█████▇▇▇▇▆▆▅▅▅▅▅▅▄▄▄▄▄▃▄▄▃▄▃▃▃▂▂▂▂▁▁▁1841921821861901921901851781811661691621551421391311291391291241241211151141051191151071111029910089848684666965
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:LicenseAndMaintenance▁█▄▅▇▇▅▆▁▃108117112113116116113115108111NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService us-gaap:TechnologyService█▇▅▆▆▆▃▁▂▂62615659595852495050NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostDepreciationAmortizationAndDepletion ▁▁▁▁▂▄█▅▅▅13131313141724202019NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit █▇██▇▇▇▇▇▆▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁677641668666645627604594598588529525518497491475473439447426432417417406403373385367391364351343332335302307280270269264
us-gaap:OperatingExpenses █████▇██▆▇▆▅▆▅▅▅▅▄▅▄▄▄▄▄▄▃▄▃▃▃▃▂▃▂▂▂▁▁▁▁551553538538530480542530471480438420464400408398386368389364356345360339339312334312312303312280314265243255233219224209
us-gaap:ResearchAndDevelopmentExpense ██▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▄▅▄▄▄▄▄▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁▁302314290284290271290277252264244228223212221221216196208197188181190182178167175166169157153143151132122123120105113101
us-gaap:GeneralAndAdministrativeExpense ▅▆▆▆▅▃▆█▅▅▁▃█▃▃▃▃▃▃▃▃▂▃▂▃▂▃▂▂▂▃▂▄▂▁▁▁▁▁▁62686367564263845856264683404242413943434036423740343934323741314933272929272825
us-gaap:SellingAndMarketingExpense ▆▇█▇▇▇█▇▆▇▇▅▆▅▅▅▄▄▅▄▄▃▄▄▄▃▄▃▃▃▄▃▃▂▂▃▁▁▁▁14615216115715815516715714715015413113712613112712012213011612010612011211410511410510310111110010895909979837979
us-gaap:OperatingIncomeLoss ▇▅▇▇▆█▃▃▇▆▅▆▃▅▄▄▅▄▃▃▄▄▃▄▃▃▃▃▄▃▂▃▁▄▃▃▃▃▂▃1258712912711514761631271079110553968276867157617571576763605154796039631770585146504455
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:OperatingSegments█▅▇█▇▆▁▄▅▆221186211216209200136167190195NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,snps:SemiconductorAndSystemDesign█▅▇█▇▇▁▄▇▇209178202207201195136169195199NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ▃▃▃▄▆███▆▄▃▄▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1112344432121111000000000000000000NANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▃▄▃▄▄▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄█▄▄▄▄▁▂▆▅▂▆▆▂█▄-10-101-1111100101122001100192001-5-263-255-382
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▃▆▅▄▄▅▃▂▃█▅▅▇▄▅▅▇▂▃▃▅▁▂▅▅▃▆▄▄▄▅▄▄▄▅-1061-2-35-10-18-11211313-42017-14-9-103-23-1412-138-6-7-64-2-5-23NANANANANA
us-gaap:NonoperatingIncomeExpense ▁▇▄▅█▄▂▆▃▇▆▆▆▇▄▆▆▃▄▅▆▅▅▅▅▇▆▅▆▆▅▄▅▅-151215180-97-712878110810-6-137543411837103-263NANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▄▄▄▅▅▄▁▄▅▆█▄▄▅▅▅▅▄▄▄▅▅▄▄▄▄▄▄▅▄▅▄▄▅▄▄▄▄▅▃0-4-293215-6-202-716123220-3821102027469281105432518113-142173-234814-75
us-gaap:ComprehensiveIncomeNetOfTax ▅▆▇▅▆▇█▄▅▄▁▆▅▅▅▄▅▄▄▄▅▄▄▅▅▄▅▄▄▅▄▅▄▄▄▅▄▄8911316499119168235477725-1181287392775895364048643041636949684056694466225349945031NANA
us-gaap:NetIncomeLoss ▅▅▆▅▅▆█▅▅▃▁▅▄▅▅▄▅▄▄▄▄1091041609911815325479102-3-120116538672646960495555NANANANANA56526869287520565281483939132
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:Parent▄▄▅▄▄▅█▃▄▁1091041609911815325479102-3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▂▂█▁▃▇10910416099118153NA79NA-3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:Assets ██▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▄▃▃▃▃▃▃▂▃▂▂▁▁▁▁7322720264056153619463446145579556995717539656785466526452405108496547475045495347564662477545444560419243584288409840204147386937443299336832093213NANANA
us-gaap:Liabilities ██▅▅▅▆▇▇▆▆▅▅▅▄▄▄▄▃▄▄▃▃▃▃▃▂▃▃▂▂▃▂▂▁▂▁▁3041304823162213227825592660263124382576211622552089193920451988181517571911181516911725171915481641136815701552139914181603147814541127124710621055NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▄▃▃▃▃▃▃▂▃▂▂▁▁▁▁7322720264056153619463446145579556995717539656785466526452405108496547475045495347564662477545444560419243584288409840204147386937443299336832093213NANANA
us-gaap:StockholdersEquity ██▇▇▇▆▅▄▅▄▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁4275414840833933390937783479315832563136327534233377332431953120315029903133313830642937305629962919282327882736269826022501239122892171212121472157NANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:AssetsCurrent ██▆▆▆▇▅▄▄▃▆█▆▅▆▅▄▂▅▆▅▄▅▃▃▃▄▃▂▁▂▃▂▃▄▃▂196019511738161716431797154314651370133216821894168214841716155214031200156316271544141615041314132813201447133011069991140129311731289136212061194NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▃▃▃▂▁▃▃▁▂▇█▆▄▆▆▄▁▄▆▅▄▆▅▄▅▆▅▃▁▃▆▄▄▅▃▃▅▂▂856700728686631592723741570605104811549918279769468275828369868687969859038218931022892681550700963796811889694700883669626
us-gaap:AccountsReceivableNetCurrent ▆█▅▄▅█▅▅▅▅▄▄▃▃▄▃▂▃▃▃▃▂▃▂▃▂▂▂▂▂▂▁▂▁▁▁▁634799553457526762554501568499451411373331438317299354385307338283326238322246256278251270292210236213175210169NANANA
us-gaap:InventoryNet █▅▄▆█▃▁166148141155166137122NANANA61NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ████▇▇▂▅▅▅▄▃▃▄▃▃▃▂▂▂▂▃▁▁▂▂▂▂▂▂▁▁▁▁▁284281290288259249671781841821341251211311049395917184869254556668596278815537505153NANANANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:PropertyPlantAndEquipmentNet ██▇▆▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁470457429372344317309290283284266262259256257258258261263260258256249216202197197194195193191165157157159150149NANANA
us-gaap:Goodwill ███▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▁▁▁▁3311323131713143314331453143313831473130270626602661265225182515250024722471233522512245225522602254196619751976198019711976163816301295125812561266NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▃▃▃▄▄▅▅▆▇▇▃▃▃▄▃▄▄▅▅▄▄▅▆▆▆▄▅▅▆▇█▅▅▁▂▂▂279282279283306332360394422434253248274301266295320337363318302332365367398307335364397430466350364181203220232NANANA
 us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass snps:DevelopedAndCoreTechnology▃▄▃▂▃▄▆▇██▂▁▂▃▄▅▆▇█▆▄▆▇▆▆▃▄▅▆▇█137146136130143157174190204205121111127143150169185197208187158174191179187138152166179194207NANANANANANANANANA
 us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationships▅▄▅▅▆▆▇▇██▄▅▅▅▄▄▄▄▅▄▄▄▅▅▅▄▄▄▅▅▆▃▃▁▁1171081161251351441541631721781111161231299610110811011610210611211812312910210711211712313191934650NANANANANA
us-gaap:OtherAssetsNoncurrent █████▇▄▅▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁392397380383380358246252243248222215206197185190182176186185184179175171163156150143140134123112113108107113106NANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:LiabilitiesCurrent ██▆▅▆███▇▇▅▆▅▅▆▆▅▄▅▅▄▄▄▃▄▂▃▃▂▂▃▃▃▁▂▁▁205420551752163017322025210220831881195016141764159314561714166314851433157814591325134313861227130410361222117110121022125211381073863982807785NANANA
us-gaap:DebtCurrent NA208171616541434349739644092982781772052772502272051901902653030230303030303030NANANANANANANANANA
us-gaap:AccountsPayableCurrent ▅▃▂▂▃▃█▅▄▄▂▂▃▂▁▃▃▂▁▂▃▃▃▂▁▁▁▂▂▂▃▁▁▁▁512619143126854943421919332313263020918262828141388162314291212911NANANANANA
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent ▆▄▇▆▄▃█▆▄▄▇▅▄▂▅▄▃▂▄▃▃▂▅▃▂▁▄▃▂▁▄▃▂▁▂▁▁447355506471365335578449373349499403351251401347285254385330301242397319275217358321277223383302258204284226216NANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇▃▄▄▃▄▆▃███▆▇▂▄▄▃▃▃▂▂▃▄▁▁▁▂▂▁▂▂▂▁▂▂8862696561677961959497858750666656626054545566454543474946495351444852NANANANANA
us-gaap:AccruedIncomeTaxesCurrent ▄▄▃▁▂▃▆▂▂██▄▃▂▅▆▅▄▄▅▂▃▆▄▄▃▂▄▃▃▁▂▂▂▁▁▁161815361327693839161192229231619256123120171171613104786322NANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
 us-gaap:LongTermDebt us-gaap:CreditFacility,us-gaap:DebtInstrument,us-gaap:LongtermDebtType snps:TermLoan,snps:TheCreditAgreement,us-gaap:UnsecuredDebt▁▃▄▆█111116119123127NA133NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▇▇▇▇▇▇▇▇▇▇████▁1141221201251261271251231271311341371391420NANANA02230374552606775829097105NANANANANANANANANA
 us-gaap:LongTermDebtNoncurrent us-gaap:CreditFacility,us-gaap:DebtInstrument,us-gaap:LongtermDebtType snps:TermLoan,snps:TheCreditAgreement,us-gaap:UnsecuredDebt▁▂▃▃▄▄▅▅▆▇▇▇██9097102106111116120123127131134137139142NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ████████▁▁▁55555555444NANANA0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▆▆███▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁261284323338324296265273271279252247236228210213204192202204197204158164161159164184176172126124123111107111105NANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:StockholdersEquity ██▇▇▇▆▅▄▅▄▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁4275414840833933390937783479315832563136327534233377332431953120315029903133313830642937305629962919282327882736269826022501239122892171212121472157NANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄1111111111111111111111111111111111111NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁3356326831643003291228202543229622232133214322772170213719471894183817841725168816431608155115011437138213241283123111671098107910091001931883816NANANA
us-gaap:TreasuryStockValue ███▇▇▇▇█▇▇▅▅▅▄▄▄▃▃▂▁▂▂▁▁▂▂▂▁▂▂▂▃▄▄▄▄▃63466462557256760059763658557442641937635529427022926898619416249609411610689105139168228272347351278190NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▂▃▃▃▃▃▂▃▅▆▄▄▄▃▂▂▂▁▂▃▃▃▅▆▆▅▆▆▆▇▇▆▇▇██▇-104-83-92-96-96-97-113-94-62-37-65-67-79-98-104-109-103-128-105-95-88-97-62-41-39-46-28-40-28-16-15-31-22-24-10-13NANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▃▆██▁▅3799221370352-144130NANANANANANANANANANANANANANANANANANA-73191263133-91102NANA-39NANA-39NANA-45
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▁▂▇██▇-103-133-117-51-36-29-37NANANANANANANANANANANANANANANANANANA-9-17-19-14-14-408NANA-1NANA-18NANA-13
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄█▅▁▁▇▄-11493-59-264-27538-104NANANANANANANANANANANANANANANANANANA-41-45-3115-3638NANA0NANA-13NANA-17
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▃▆██▁▅3799221370352-144130NANANANANANANANANANANANANANANANANANA-73191263133-91102NANA-39NANA-39NANA-45
us-gaap:NetIncomeLoss ▅▅▆▅▅▆█▅▅▃▁▅▄▅▅▄▅▄▄▄▄1091041609911815325479102-3-120116538672646960495555NANANANANA56526869287520565281483939132
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:Parent▄▄▅▄▄▅█▃▄▁1091041609911815325479102-3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▂▂█▁▃▇10910416099118153NA79NA-3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▆▆▄▄▅▅█▆▆▂▃▃▃▄▄▅▅▇█▆▅▅▆▄▃▂▃▃▃▃▁52524949515158535243454747494950505657525150524947434547474741NANA31NANA31NANA25
us-gaap:IncreaseDecreaseInInventories ▆▄▁▂█▆▆▄▇▆185-20-1034151872515NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▁▂▇██▇-103-133-117-51-36-29-37NANANANANANANANANANANANANANANANANANA-9-17-19-14-14-408NANA-1NANA-18NANA-13
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▆█▆▄▃▃▂▂▃▂▂▁▂▂▂▁▁▂▂▂▂▅▃▁▁▁▂▁▁▂26547553392928212028201913181819131519232419452815141718151321NANA11NANA10NANA8
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄█▅▁▁▇▄-11493-59-264-27538-104NANANANANANANANANANANANANANANANANANA-41-45-3115-3638NANA0NANA-13NANA-17
us-gaap:PaymentsForRepurchaseOfCommonStock ▅▄▆▅▄▂▂▆▃█▄▆▅▄▅▆▂▇▄▂▁▇▃▁▂▃▄▂10080120100802933132551808012010080100120201608036014440025547535NANA0NANA20100NA6475NA25
  2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31

Common Stock Value

us-gaap:CommonStockValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value111111111111111111111111111111111111111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Shares Outstanding

us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-31
Value150150150150149149149148148148150151155155154150143148146
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value150150150150149149149148148148150150150150151151152151155155155153155155154154154154153151150148146143143143146149148
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-312015-04-302015-01-312014-07-312014-04-302014-01-312013-07-312013-04-302013-01-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value154154154153152152153149154154154153154155158157157157157156157156154150149147148152153151152150
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-312015-04-302015-01-312014-07-312014-04-302014-01-312013-07-312013-04-302013-01-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value150150150149149148149149150150150151152152155154154155154154153153151147145143144148149148148146
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value0.730.691.06999999999999980.670.791.031.70.530.69-0.02-0.79999999999999990.780.350.570.480.430.460.390.320.360.360.420.40.420.410.440.370.340.450.460.189999999999999950.510.140.390.360.550.320.270.270.9
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value0.710.671.03000000000000020.650.771.011.660.520.67-0.02-0.77999999999999990.750.340.560.470.420.450.390.310.350.350.410.390.420.40.430.360.330.440.450.179999999999999940.50.140.390.350.530.310.260.260.88
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value861834851852836820795779776769696695680652633615605568587555557542539521517478504482499475454443432425386393364336338330
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, snps:SemiconductorAndSystemDesign



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value773748765769753737717708709705
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.889.790.090.290.189.990.390.991.391.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax89.889.790.090.290.189.990.390.991.391.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments snps:SemiconductorAndSystemDesign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, snps:SoftwareIntegrity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value88858583838277716764
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.210.310.09.89.910.19.79.18.78.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.210.310.09.89.910.19.79.18.78.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments snps:SoftwareIntegrity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:License



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value12915016817714313066999991
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.118.119.820.817.115.98.412.812.911.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.118.119.820.817.115.98.412.812.911.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:License100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LicenseAndMaintenance



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value590556548537558553605570556570
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.566.764.463.066.867.576.273.171.774.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.566.764.463.066.867.576.273.171.774.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:LicenseAndMaintenance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TechnologyService



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value141127134137134136122110120106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.415.215.816.216.116.615.514.115.513.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.415.215.816.216.116.615.514.115.513.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TechnologyService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:JP



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-30
Value80726965726572717068646457616563585353505360546158646364656969717177686771
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.48.78.17.78.77.99.19.29.18.99.39.28.49.510.310.29.79.49.29.29.611.210.111.811.313.412.613.413.214.715.216.016.618.10.017.618.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.48.78.17.78.77.99.19.29.18.99.39.28.49.510.310.29.79.49.29.29.611.210.111.811.313.412.613.413.214.715.216.016.618.10.017.618.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:JP100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:KR



Period End2020-04-302020-01-312019-04-302019-01-31
Value1058984102
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.210.710.112.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.210.710.112.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:KR100.0100.0100.0100.0

country:US



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-30
Value404408444407416407381365376384329358350319316316297274304275286277275268243233233234238233213216206197187176182
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.949.052.247.849.849.748.046.948.550.047.351.551.548.950.051.549.248.451.949.651.351.251.151.447.148.846.348.647.749.146.948.747.946.50.045.746.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.949.052.247.849.849.748.046.948.550.047.351.551.548.950.051.549.248.451.949.651.351.251.151.447.148.846.348.647.749.146.948.747.946.50.045.746.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

snps:AsiaPacificAndOther



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value181169-10728926326324425123223022819219319617616817516815514814213114012614411413211412910811698959686898264
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.120.3-12.634.031.532.130.832.330.030.032.827.728.530.027.927.429.129.626.526.825.624.326.024.227.923.926.223.825.922.925.722.122.122.622.422.722.519.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.120.3-12.634.031.532.130.832.330.030.032.827.728.530.027.927.429.129.626.526.825.624.326.024.227.923.926.223.825.922.925.722.122.122.622.422.722.519.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax snps:AsiaPacificAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Europe



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value8994908383909785
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.411.310.610.010.211.612.511.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.411.310.610.010.211.612.511.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Europe100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value861834851852836820795779776769696695680652633615605568587555557542539521517478504482499475454443432425386393364336338330
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value1841921821861901921901851781811661691621551421391311291391291241241211151141051191151071111029910089848684666965
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.423.121.521.922.823.524.023.823.023.524.024.423.823.922.422.721.822.823.823.322.423.022.522.122.022.123.623.921.623.422.622.523.221.121.921.923.119.820.419.9

Cost Of Goods And Services Sold

us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

us-gaap:LicenseAndMaintenance



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value108117112113116116113115108111
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.614.113.313.313.914.214.314.813.914.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:LicenseAndMaintenance18.321.220.621.120.821.118.720.319.419.5

us-gaap:TechnologyService



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value62615659595852495050
Percentage of CostOfGoodsAndServicesSold57.552.649.652.451.550.446.543.146.345.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.27.46.67.07.17.26.66.46.56.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TechnologyService44.048.741.743.244.443.242.945.241.747.5

Cost Depreciation Amortization And Depletion

us-gaap:CostDepreciationAmortizationAndDepletion



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value13131313141724202019
Percentage of CostDepreciationAmortizationAndDepletion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.61.61.61.82.13.12.62.62.5

Gross Profit

us-gaap:GrossProfit



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value677641668666645627604594598588529525518497491475473439447426432417417406403373385367391364351343332335302307280270269264
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.676.978.578.177.276.576.076.277.076.576.075.676.276.177.677.378.277.276.276.777.677.077.577.978.077.976.476.178.476.677.477.576.878.978.178.176.980.279.680.1

Operating Expenses

us-gaap:OperatingExpenses



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value551553538538530480542530471480438420464400408398386368389364356345360339339312334312312303312280314265243255233219224209
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.066.463.363.263.458.568.368.060.662.562.960.568.361.364.564.863.964.766.465.663.963.866.865.065.665.366.364.762.563.868.763.272.862.463.165.064.165.166.363.5

Operating Costs And Expenses

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value302314290284290271290277252264244228223212221221216196208197188181190182178167175166169157153143151132122123120105113101
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.137.734.133.434.733.136.635.632.534.435.132.932.832.635.036.135.734.635.535.633.833.535.335.034.435.034.734.534.033.233.832.435.031.231.731.333.131.433.430.7

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value62686367564263845856264683404242413943434036423740343934323741314933272929272825
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.38.27.57.96.75.17.910.87.67.33.86.712.36.36.76.96.97.07.57.97.46.78.07.27.87.17.77.16.58.09.27.211.58.07.07.58.28.18.57.8

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value14615216115715815516715714715015413113712613112712012213011612010612011211410511410510310111110010895909979837979
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.018.318.918.419.019.021.020.318.919.622.118.920.219.420.720.720.021.622.321.021.619.622.321.522.222.122.821.820.821.424.522.525.222.423.525.321.824.923.524.1

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value1258712912711514761631271079110553968276867157617571576763605154796039631770585146504455
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.610.515.215.013.818.07.78.216.414.013.215.27.914.813.112.514.312.59.811.113.613.210.712.912.312.610.111.415.912.88.714.34.016.515.013.112.815.113.316.7

us-gaap:ConsolidationItems

us-gaap:OperatingSegments



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value221186211216209200136167190195
Percentage of OperatingIncomeLoss175.9213.6163.0169.7181.7136.3222.3262.4149.7181.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.722.424.825.425.124.517.221.524.525.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.024.50.00.00.025.5

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, snps:SemiconductorAndSystemDesign



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value209178202207201195136169195199
Percentage of OperatingIncomeLoss166.6204.4155.8162.8174.4132.5222.1265.4154.1184.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.321.423.724.424.123.817.221.825.225.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments snps:SemiconductorAndSystemDesign27.123.926.427.026.726.519.024.027.628.2

us-gaap:OperatingSegments, snps:SoftwareIntegrity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value11898850-1-5-3
Percentage of OperatingIncomeLoss9.39.27.26.97.33.80.2-3.0-4.4-2.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.01.11.01.00.70.0-0.3-0.7-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments snps:SoftwareIntegrity13.39.410.910.510.16.80.2-2.7-8.3-4.9

Interest Expense

us-gaap:InterestExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-31
Value1112344432121111000000000000000000
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.30.50.60.50.60.50.40.30.30.30.20.20.20.10.10.10.10.10.10.00.10.10.10.10.10.10.10.10.20.20.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value-10-101-1111100101122001100192001-5-263-255-382
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.0-0.20.00.2-0.20.20.20.20.2-0.00.10.20.10.20.30.40.40.20.20.30.30.20.20.21.90.40.00.20.2-1.2-0.51.50.9-0.61.41.6-0.92.60.7

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value-1061-2-35-10-18-11211313-42017-14-9-103-23-1412-138-6-7-64-2-5-2-43
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.30.80.2-0.2-0.40.7-1.3-2.3-1.42.70.30.42.1-0.70.5-0.02.9-2.5-1.6-1.90.7-4.3-2.70.30.5-2.91.6-1.3-1.5-1.40.9-0.6-1.2-0.50.00.8

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-31
Value-151215180-97-712878110810-6-137543411837103-263
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.81.40.20.62.2-0.0-1.21.0-1.01.61.21.11.21.8-0.01.41.7-1.2-0.30.71.40.90.90.70.82.31.60.71.42.30.7-0.51.50.9

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value0-4-293215-6-202-716123220-3821102027469281105432518113-142173-234814-75
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.5-3.43.91.9-0.8-25.4-1.02.216.131.6-0.61.33.31.63.34.60.81.01.85.12.1-0.11.00.90.70.41.23.60.43.0-3.30.64.01.0-6.11.12.54.2-22.9

Profit Loss

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value8911316499119168235477725-1181287392775895364048643041636949684056694466225349945031
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.413.619.411.714.320.629.76.09.93.3-17.018.510.714.112.39.515.76.46.98.611.55.57.812.313.510.413.58.311.414.69.915.05.212.612.924.113.99.3

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value1091041609911815325479102-3-12011653867264696049555556526869287520565281483939132
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.732.010.213.2-0.5-17.216.87.813.311.510.511.510.68.510.010.011.310.813.814.76.317.04.813.313.520.613.211.711.740.2

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value1091041609911815325479102-3
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.732.010.213.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-07-312018-01-31
Value1091041609911815379-3
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.710.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value732272026405615361946344614557955699571753965678546652645240510849654747504549534756466247754544456041924358428840984020414738693744329933673368320932133286
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value304130482316221322782559266026312438257621162255208919392045198818151757191118151691172517191548164113681570155213991418160314781454112712661247106210551186
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.542.336.236.036.840.343.345.442.845.139.239.738.236.839.038.936.637.037.936.735.637.036.034.136.032.736.036.234.235.338.738.238.834.237.637.033.132.836.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value732272026405615361946344614557955699571753965678546652645240510849654747504549534756466247754544456041924358428840984020414738693744329933673368320932133286
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value427541484083393339093778347931583256313632753423337733243195312031502990313331383064293730562996291928232788273626982602250123912289217121012121214721572100
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets58.457.663.763.963.159.656.654.557.154.960.760.361.863.261.061.163.463.062.163.364.463.064.065.964.067.364.063.865.864.760.361.861.265.862.463.066.967.263.9

Assets Current

us-gaap:AssetsCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value19601951173816171643179715431465137013321682189416821484171615521403120015631627154414161504131413281320144713301106999114012931173128913381362120611941247
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.827.127.126.326.528.325.125.324.023.331.233.430.828.232.830.428.325.331.032.932.530.431.528.929.131.533.231.027.024.927.533.431.339.139.740.437.637.238.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-312010-07-312010-04-302010-01-312009-10-312008-10-31
Value856700728686631592723741570605104811549918279769468275828369868687969859038218931022892681550700963796811855889694700775883669626701577
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.79.711.411.210.29.311.812.810.010.619.420.318.115.718.618.516.712.316.619.918.317.120.619.918.021.323.520.816.613.716.924.921.324.625.426.421.621.823.60.00.00.00.00.0

Short Term Investments

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value634799553457526762554501568499451411373331438317299354385307338283326238322246256278251270292210236213203175210169181
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.711.18.67.48.512.09.08.710.08.78.47.26.86.38.46.26.07.57.66.27.16.16.85.37.15.95.96.56.16.77.15.56.36.56.05.26.55.35.5

Inventory Net

us-gaap:InventoryNet



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312017-10-31
Value16614814115516613712261
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.12.22.52.72.22.01.1

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value2842812902882592496717818418213412512113110493959171848692545566685962788155375051465336
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.93.94.54.74.23.91.13.13.23.22.52.22.22.52.01.81.91.91.41.71.82.01.11.21.51.61.41.51.92.01.31.01.41.61.41.61.1

Land

Machinery And Equipment Gross

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value470457429372344317309290283284266262259256257258258261263260258256249216202197197194195193191165157157159159150149148
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.46.46.76.15.65.05.05.05.05.04.94.64.74.94.95.15.25.55.25.35.45.55.24.84.44.74.54.54.84.84.64.34.24.84.74.74.74.74.5

Goodwill

us-gaap:Goodwill



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-312009-10-31
Value331132313171314331433145314331383147313027062660266126522518251525002472247123352251224522552260225419661975197619801971197616381630129512891258125612661265932
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.244.949.551.150.849.651.154.255.254.850.246.948.750.448.149.250.452.149.047.247.348.247.249.749.446.945.346.148.349.047.742.443.539.338.337.439.139.438.50.0

us-gaap:BusinessAcquisition

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions



Period End2020-04-302020-01-312018-10-312018-07-312018-04-302017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302015-10-312015-07-31
Value555647383817813213213239392723492
Percentage of Goodwill1.71.71.51.21.26.65.05.05.01.61.61.19.53.9
Percentage of Assets0.80.80.80.70.73.32.32.42.50.70.80.54.61.9
Percentage of Assets us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

snps:SemiconductorAndSystemDesign



Period End2020-04-302019-10-312018-10-31
Value8027582730
Percentage of Goodwill2.487.086.9
Percentage of Assets1.143.144.4
Percentage of Assets snps:SemiconductorAndSystemDesign0.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value279282279283306332360394422434253248274301266295320337363318302332365367398307335364397430466350364181196203220232249
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.94.44.65.05.25.96.87.47.64.74.45.05.75.15.86.47.17.26.46.47.17.68.18.77.37.78.59.710.711.29.19.75.55.86.06.97.27.6

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

snps:CapitalizedSoftwareDevelopmentCosts



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value44433333333444444444444444433333
Percentage of IntangibleAssetsNetExcludingGoodwill1.71.71.61.11.00.90.91.00.90.81.51.91.71.51.71.51.31.21.11.31.41.21.11.11.01.31.21.11.00.90.81.7
Percentage of Assets0.10.10.10.10.10.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets snps:CapitalizedSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

snps:DevelopedAndCoreTechnology



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value137146136130143157174190204205121111127143150169185197208187158174191179187138152166179194207122
Percentage of IntangibleAssetsNetExcludingGoodwill49.152.048.946.246.847.548.348.248.547.247.745.146.447.756.357.557.958.657.458.852.452.452.548.847.145.045.545.745.345.144.562.5
Percentage of Assets1.92.02.12.12.32.52.83.33.63.62.22.02.32.72.93.33.74.24.13.83.33.74.03.94.13.33.53.94.44.85.03.6
Percentage of Assets snps:DevelopedAndCoreTechnology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ContractualRights



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value34334567992258911141523152129374553546169788898808711131420
Percentage of IntangibleAssetsNetExcludingGoodwill1.21.51.11.41.61.71.92.02.22.31.00.81.92.83.44.04.44.76.64.87.18.810.212.313.417.618.419.019.720.521.223.024.16.46.97.38.4
Percentage of Assets0.00.10.00.10.10.10.10.10.20.20.00.00.10.20.20.20.30.30.50.30.40.60.81.01.21.31.41.61.92.22.42.12.30.40.40.40.6
Percentage of Assets us-gaap:ContractualRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value11710811612513514415416317217811111612312996101108110116102106112118123129102107112117123131919346485057
Percentage of IntangibleAssetsNetExcludingGoodwill41.938.541.744.444.043.542.841.441.041.144.146.944.843.036.034.533.832.832.132.235.233.732.333.732.533.232.030.829.728.728.226.125.725.625.024.723.2
Percentage of Assets1.61.51.82.02.22.32.52.83.03.12.12.12.32.51.82.02.22.32.32.12.22.42.52.72.82.42.52.62.93.13.22.42.51.41.51.51.8
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InProcessResearchAndDevelopment



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-31
Value111111178126444022331134617
Percentage of IntangibleAssetsNetExcludingGoodwill0.40.40.40.40.40.40.31.81.92.92.61.91.71.50.00.80.70.80.82.81.21.31.83.8
Percentage of Assets0.00.00.00.00.00.00.00.10.10.20.10.10.10.10.00.10.10.10.10.20.10.10.20.4
Percentage of Assets us-gaap:InProcessResearchAndDevelopment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TrademarksAndTradeNames



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-31
Value151617181819202223247891067891099101111125557
Percentage of IntangibleAssetsNetExcludingGoodwill5.75.96.26.46.26.05.85.65.55.63.13.53.43.42.62.62.62.72.82.93.23.13.03.23.11.71.61.61.5
Percentage of Assets0.20.20.30.30.30.30.30.40.40.40.10.20.20.20.10.20.20.20.20.20.20.20.20.30.30.10.10.10.2
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value392397380383380358246252243248222215206197185190182176186185184179175171163156150143140134123112113108103107113106105
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.55.96.26.15.74.04.44.34.34.13.83.83.83.53.73.73.73.73.83.93.83.73.83.63.73.53.43.43.43.02.93.03.33.13.23.53.33.2

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value2054205517521630173220252102208318811950161417641593145617141663148514331578145913251343138612271304103612221171101210221252113810738631008982807785921
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.128.527.426.528.031.934.236.033.034.129.931.129.127.732.732.629.930.231.329.527.928.829.027.028.624.728.127.324.725.430.229.428.726.230.029.225.224.428.0

Debt Current

us-gaap:DebtCurrent



Period End2020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-31
Value208171616541434349739644092982781772052772502272051901902653030230303030303030
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.90.30.32.76.55.68.67.07.70.25.25.13.43.95.45.04.84.13.84.05.70.60.75.00.70.70.70.70.70.7

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value512619143126854943421919332313263020918262828141388162314291212961116
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.40.30.20.50.41.40.90.80.70.40.30.60.50.30.50.60.40.20.40.60.60.60.30.30.20.20.40.60.40.70.30.30.30.20.30.5

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value447355506471365335578449373349499403351251401347285254385330301242397319275217358321277223383302258204302284226216312
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.14.97.97.75.95.39.47.76.66.19.37.16.44.87.76.85.75.47.66.76.35.28.37.06.05.28.27.56.85.69.27.86.96.29.08.47.16.79.5

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value88626965616779619594978587506666566260545455664545434749464953514448535273
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.20.91.11.11.01.11.31.11.71.71.81.51.61.01.31.31.11.31.21.11.21.21.41.01.01.01.11.21.11.21.31.31.21.51.61.52.2

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value16181536132769383916119222923161925612312017117161310478633228
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.20.10.10.20.40.10.20.70.70.30.20.20.40.60.50.30.40.50.10.30.70.50.40.30.20.40.30.30.10.20.20.20.10.10.10.10.3

Long Term Debt

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

us-gaap:LongTermDebt

snps:TermLoan, snps:TheCreditAgreement, us-gaap:UnsecuredDebt



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302018-10-31
Value111116119123127133
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.92.02.12.2
Percentage of Assets snps:TermLoan snps:TheCreditAgreement us-gaap:UnsecuredDebt0.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-31
Value114122120125126127125123127131134137139142002230374552606775829097105
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.71.92.02.02.02.02.12.22.32.52.42.62.70.00.00.50.60.80.91.21.31.61.71.92.22.42.5

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

snps:TermLoan, snps:TheCreditAgreement, us-gaap:UnsecuredDebt



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-31
Value9097102106111116120123127131134137139142
Percentage of LongTermDebtNoncurrent78.779.685.185.388.591.595.6100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.41.61.71.81.82.02.12.22.32.52.42.62.7
Percentage of Assets snps:TermLoan snps:TheCreditAgreement us-gaap:UnsecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-31
Value555555554440
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value261284323338324296265273271279252247236228210213204192202204197204158164161159164184176172126124123111108107111105101
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.95.15.55.24.74.34.74.84.94.74.34.34.34.04.24.14.14.04.14.24.43.33.63.53.83.84.34.34.33.03.23.33.43.23.23.53.33.1

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value427541484083393339093778347931583256313632753423337733243195312031502990313331383064293730562996291928232788273626982602250123912289217121012121214721572100
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets58.457.663.763.963.159.656.654.557.154.960.760.361.863.261.061.163.463.062.163.364.463.064.065.964.067.364.063.865.864.760.361.861.265.862.463.066.967.263.9

Common Stock Value

us-gaap:CommonStockValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value111111111111111111111111111111111111111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value3356326831643003291228202543229622232133214322772170213719471894183817841725168816431608155115011437138213241283123111671098107910091001957931883816770
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.845.449.448.847.044.541.439.639.037.339.740.139.740.637.237.137.037.634.234.134.534.532.533.031.533.030.429.930.029.026.527.927.030.428.427.627.525.423.4

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value63466462557256760059763658557442641937635529427022926898619416249609411610689105139168228272347358351278190197
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.79.29.89.39.29.59.711.010.310.07.97.46.96.75.65.34.65.71.91.22.03.51.01.32.12.82.42.12.63.54.15.97.310.510.610.48.75.96.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value-104-83-92-96-96-97-113-94-62-37-65-67-79-98-104-109-103-128-105-95-88-97-62-41-39-46-28-40-28-16-15-31-22-24-20-10-13-15
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.4-1.2-1.4-1.6-1.6-1.5-1.8-1.6-1.1-0.7-1.2-1.2-1.4-1.9-2.0-2.1-2.1-2.7-2.1-1.9-1.9-2.1-1.3-0.9-0.9-1.1-0.7-0.9-0.7-0.4-0.4-0.8-0.6-0.7-0.6-0.00.0-0.4-0.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value3799221370352-144130-73191263133-91102-39-39-45
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.11.226.043.442.2-17.616.5-15.437.954.526.8-19.222.7-9.2-10.9-13.8

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-103-133-117-51-36-29-37-9-17-19-14-14-408-1-18-13
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-12.0-16.0-13.8-6.1-4.4-3.6-4.7-2.0-3.6-4.0-2.8-3.1-89.9-0.4-5.1-4.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-11493-59-264-27538-104-41-45-3115-36380-13-17
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.311.2-7.0-31.0-33.04.6-13.1-8.6-9.1-6.53.1-7.78.50.0-3.6-5.4

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value3799221370352-144130-73191263133-91102-39-39-45
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.11.226.043.442.2-17.616.5-15.437.954.526.8-19.222.7-9.2-10.9-13.8

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value1091041609911815325479102-3-12011653867264696049555556526869287520565281483939132
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.732.010.213.2-0.5-17.216.87.813.311.510.511.510.68.510.010.011.310.813.814.76.317.04.813.313.520.613.211.711.740.2

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value1091041609911815325479102-3
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.732.010.213.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-07-312018-01-31
Value1091041609911815379-3
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.518.911.714.118.710.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Profit Loss

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value52524949515158535243454747494950505657525150524947434547474741313125
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value185-20-1034151872515
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-103-133-117-51-36-29-37-9-17-19-14-14-408-1-18-13
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-12.0-16.0-13.8-6.1-4.4-3.6-4.7-2.0-3.6-4.0-2.8-3.1-89.9-0.4-5.1-4.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value2654755339292821202820191318181913151923241945281514171815132111108
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-11493-59-264-27538-104-41-45-3115-36380-13-17
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.311.2-7.0-31.0-33.04.6-13.1-8.6-9.1-6.53.1-7.78.50.0-3.6-5.4

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-312012-01-312011-07-312011-01-312010-07-312010-01-31
Value10080120100802933132551808012010080100120201608036014440025547535020100647525
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-312015-04-302015-01-312014-07-312014-04-302014-01-312013-07-312013-04-302013-01-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value0.002-0.0450.2480.117-0.044-0.1050.1411.031-0.0350.1410.2010.2410.2860.0670.150.3370.1490.0720.070.0490.1010.2080.025-0.2390.1070.2320.069-0.4170.0780.176
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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

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

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value56514039363837373232282825252525232322222020212118181716151717161517
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-04-302020-01-312019-10-31
Value4624600
Percentage of OperatingLeaseRightOfUseAsset100.0100.00.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-31
Value8587027306886335947257435726071050980
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

snps:AdjustmentsToAdditionalPaidInCapitalEquityForwardContract



Period End2020-04-302020-01-312019-07-312019-04-302018-10-312018-07-312018-04-302018-01-31
Value0-200-2033-3340-20
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityForwardContract0.0100.00.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-07-312019-04-302018-10-312018-07-312018-04-302018-01-31
Value0-200-2033-3340-20
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityForwardContract0.0100.00.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-04-302020-01-312019-07-312019-04-302018-10-312018-07-312018-04-302018-01-31
Value0-200-2033-3340-20
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityForwardContract0.0100.00.0100.0100.0100.0100.0100.0

snps:GainOrLossOnAssetsRelatedToDeferredCompensationPlan



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-04-302011-01-31
Value-181224164-98-7137677-168-9-3150333152452-13253
Percentage of GainOrLossOnAssetsRelatedToDeferredCompensationPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

snps:IncreaseDecreaseinOperatingLeaseLiabilities



Period End2020-04-302020-01-312019-04-302019-01-31
Value112000
Percentage of IncreaseDecreaseinOperatingLeaseLiabilities100.0100.00.00.0

us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

snps:NumberOfMajorCustomers

us-gaap:SalesRevenueNet, us-gaap:CustomerConcentrationRisk



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-31
Value1.00.01.01.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of NumberOfMajorCustomers100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

snps:OperatingMargin

us-gaap:OperatingSegments



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value0.260.220.00.250.250.24-0.019999999999999990.220.240.25
Percentage of OperatingMargin100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, snps:SemiconductorAndSystemDesign



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value0.270.240.00.270.270.26-0.0200000000000000180.240.280.28
Percentage of OperatingMargin103.8109.10.0108.0108.0108.3100.0109.1116.7112.0

us-gaap:OperatingSegments, snps:SoftwareIntegrity



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value0.130.090.0100000000000000090.110.10.070.010000000000000002-0.03-0.08-0.05
Percentage of OperatingMargin50.040.90.044.040.029.2-50.0-13.6-33.3-20.0

snps:Paymentsforcapitalizedsoftwaredevelopmentcosts



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-31
Value11000000111
Percentage of Paymentsforcapitalizedsoftwaredevelopmentcosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

snps:ReductionofOperatingLeaseRightofUseAssets



Period End2020-04-302020-01-312019-04-302019-01-31
Value162300
Percentage of ReductionofOperatingLeaseRightofUseAssets100.0100.00.00.0

us-gaap:AcceleratedShareRepurchasesDate

snps:StockRepurchaseProgramPrepaymentDuringPeriod

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR



Period End2020-02-29
Value100
Percentage of StockRepurchaseProgramPrepaymentDuringPeriod100.0

us-gaap:AcceleratedShareRepurchasesDate

snps:StockRepurchaseProgramPrepaymentDuringPriorPeriodDerivativeSettlement

snps:AcceleratedShareRepurchaseProgramDecember2019ASR



Period End2020-02-29
Value20
Percentage of StockRepurchaseProgramPrepaymentDuringPriorPeriodDerivativeSettlement100.0

us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR, us-gaap:SubsequentEvent



Period End2020-05-22
Value20
Percentage of StockRepurchaseProgramPrepaymentDuringPriorPeriodDerivativeSettlement0.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value56514039363737363232
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value56514039363737363232
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value56514039363737363232
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value5651403936383737323228282525252523232123202021211818171615171717201613121514
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value56-51-40-39-3638-37-37-3232
Percentage of AllocatedShareBasedCompensationExpense100.0-100.0-100.0-100.0-100.0100.0-100.0-100.0-100.0100.0

us-gaap:IncomeStatementLocation

snps:CostOfMaintenanceAndServices



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value22111111111100000000000000000000
Percentage of AllocatedShareBasedCompensationExpense3.83.94.34.34.13.84.03.93.93.93.63.83.73.32.52.52.42.52.72.32.42.63.33.22.82.42.32.22.32.72.72.5

us-gaap:CostOfSales



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value65444433333322222222222211111111
Percentage of AllocatedShareBasedCompensationExpense10.810.811.211.411.010.710.610.310.510.511.811.911.011.611.311.411.111.311.510.310.310.310.310.210.210.39.79.59.510.310.210.4

us-gaap:GeneralAndAdministrativeExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value99666766654443333333333333323333
Percentage of AllocatedShareBasedCompensationExpense17.017.717.116.516.419.017.016.818.817.616.616.817.315.315.215.015.815.415.615.416.616.917.417.418.117.618.218.120.020.318.918.8

us-gaap:ResearchAndDevelopmentExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value28262019181818181515131312121313111110111010101088887888
Percentage of AllocatedShareBasedCompensationExpense51.250.549.949.149.147.649.149.446.047.648.548.149.249.951.151.050.550.350.850.050.749.648.447.347.849.249.349.247.546.048.547.5

us-gaap:SellingAndMarketingExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value98777777665545554445444433333333
Percentage of AllocatedShareBasedCompensationExpense17.217.117.518.719.418.919.419.620.920.519.519.418.819.920.020.120.220.419.322.020.020.620.721.921.120.620.520.920.620.819.720.8

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value46423332303230302626202018181818171716181515161614131312111313131512991011
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value252324242528363132292527283030323238393332333433322831333333292643333222
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value24-22-23-2528-30-3128
Percentage of AmortizationOfIntangibleAssets96.3-96.2-97.1-97.297.3-97.2-97.296.9

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

snps:CapitalizedSoftwareDevelopmentCosts



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-31
Value0000000000110000000000000000000000
Percentage of AmortizationOfIntangibleAssets3.73.82.72.92.82.72.52.82.83.14.03.63.53.23.12.92.82.42.32.72.82.72.72.72.73.02.62.52.42.42.62.815.221.1

snps:DevelopedAndCoreTechnology



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-31
Value12121212141623181818151516181921212222181718181817151617171715141611
Percentage of AmortizationOfIntangibleAssets50.852.652.952.554.256.464.159.059.261.361.856.657.860.066.066.866.558.055.555.754.054.254.954.454.653.954.152.752.151.652.052.6336.8323.1

us-gaap:ContractualRights



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value100001111003332228977777777999777222
Percentage of AmortizationOfIntangibleAssets6.73.73.23.33.33.83.64.34.33.03.911.711.511.19.18.48.921.424.623.423.723.623.223.523.324.625.227.427.728.327.026.5146.357.00.069.4

us-gaap:CustomerRelationships



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value889999999866665666655555555555444333
Percentage of AmortizationOfIntangibleAssets35.636.537.938.136.233.026.630.230.129.126.924.824.022.619.219.519.416.115.616.117.317.317.117.317.617.416.916.216.216.216.916.792.590.90.091.4

us-gaap:TrademarksAndTradeNames



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value00000111110000000000000000000000
Percentage of AmortizationOfIntangibleAssets3.13.33.23.23.54.03.33.73.73.53.43.33.13.12.62.42.42.12.02.12.12.12.12.11.81.11.11.11.51.51.31.2

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-312015-04-302015-01-312014-07-312014-04-302014-01-312013-07-312013-04-302013-01-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value0000110400022201221111233352312
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

us-gaap:BusinessCombinationConsiderationTransferred1

snps:SemiconductorAndSystemDesign



Period End2020-04-30
Value105
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:CapitalizedContractCostAmortization



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value1413171512000
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.00.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value156-28415538-130-18170-35-442
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:ConcentrationRiskPercentage1

snps:ElectronicDesignAutomation



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value0.60.590.570.580.610.640.620.63
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0100.0

snps:IPAndSystemsIntegration



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value0.30.310.330.310.290.270.290.28
Percentage of ConcentrationRiskPercentage150.052.557.953.447.542.246.844.4

snps:OtherProductAndService



Period End2020-04-302019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value0.00.00.010.00.00.00.01
Percentage of ConcentrationRiskPercentage10.00.01.70.00.00.01.6

snps:SoftwareIntegrityProductsAndServices



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-31
Value0.10.10.10.10.10.090.090.08
Percentage of ConcentrationRiskPercentage116.716.917.517.216.414.114.512.7

us-gaap:ContractWithCustomerLiabilityRevenueRecognized



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-31
Value291504-432470474487
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

snps:SalesBasedRoyalties



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-31
Value341715172818
Percentage of ContractWithCustomerLiabilityRevenueRecognized11.73.5-3.53.76.03.9

us-gaap:DeferredIncomeTaxesAndTaxCredits



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-19-17-7213-17-6-215-33-746134-14-912-1612-6-312-3270-24-135-7013-42143-51
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value00-2-3-4-4-115520-1-3-6-5-5-3-5-2-6-1-12031320-4-3-2-310-30
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, us-gaap:OperatingExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value00-3-3-4-4-115320-1-2-2-2-3-3-7-6-6-300000000-4-3-2-133
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet182.283.0113.4121.0105.0103.794.6118.5103.068.6118.5-800.075.454.532.544.072.5105.7156.0267.6100.4325.717.738.5-23.916.6-3.5-0.8-2.8274.696.398.698.953.40.0180.2

us-gaap:ForeignExchangeContract, us-gaap:Sales



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value0000000001000-1-4-2-10240201-121320000-1-2-1
Percentage of DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet-82.217.0-13.4-21.0-5.0-3.75.4-18.5-3.031.4-18.5900.024.645.567.556.027.5-5.7-56.0-167.6-0.4-225.782.361.5123.983.4103.5100.8102.8-174.63.71.41.146.60.0-80.2

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-621-14-7-9-511035-8108-6-1-20-18-12-11-52-1-4-73-2-31
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate



Period End2020-04-302020-01-312017-07-312017-04-302016-07-312016-04-302015-07-312015-04-302014-07-312014-04-302013-07-31
Value0.00.210.350.350.350.350.350.350.350.350.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value98766677668877666545444444443333433343
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value500020111-1000300001103000000140010002-1
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value-10015-1211-100100-21-3-1-10-2-200000030-120022-3
Percentage of GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-312010-04-302010-01-31
Value11099131132133147527111912099112621088285976455658376627068715958867142612373555752475357
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value53-1322511558-219105758-13910159105-129606637-145533663-125685451-134474954-15258-93-83-73
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value-16124697-65-23220954-637034403841-12212016-63-3073-3357-4089-8467-7-2931-18-206711-1014
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability



Period End2020-04-302020-01-312019-07-312019-04-302019-01-31
Value-10196-28-66149
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-31
Value-3526259-41-689-26-1838-72-144-29-4-246-13-149-3-4-10-120-1-10-5-16
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-31
Value112710234149-59-325691013-488-9025745767
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value14-81119810-45101730150-1124140-427-121-8420-5-913-2-12423-98146
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-31
Value34044304400443022203220222
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOther



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-31
Value011111110122111100000100000000
Percentage of InterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost



Period End2020-04-30
Value24
Percentage of LeaseCost100.0

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

us-gaap:LineOfCreditFacilityCommitmentFeePercentage

srt:Maximum, us-gaap:RevolvingCreditFacility, snps:TheCreditAgreement, us-gaap:UnsecuredDebt



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-31
Value0.00.0020.00.00.00.002
Percentage of LineOfCreditFacilityCommitmentFeePercentage0.0100.00.00.00.0100.0

srt:Minimum, us-gaap:RevolvingCreditFacility, snps:TheCreditAgreement, us-gaap:UnsecuredDebt



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-31
Value0.00.001250.00.00.00.00125
Percentage of LineOfCreditFacilityCommitmentFeePercentage0.062.50.00.00.062.5

us-gaap:OperatingLeaseCost



Period End2020-04-30
Value23
Percentage of OperatingLeaseCost100.0

us-gaap:OperatingLeasePayments



Period End2020-04-30
Value17
Percentage of OperatingLeasePayments100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-31
Value-20940115-18-32-25281111954-625-23-9-78-35-20-16-1711-12-11016-91-3
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-20940115-18-32-2528
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-20940115-18-32-2528
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value00-2-3-4-4-115520-1-3-6-5-5-3-5-2-6-1-12031320-4-3
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value00001100-1-100001111103010-100000-1-1
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-1010-105-9-12-813
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, us-gaap:OperatingExpense



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-11000-16-10-13-915
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax111.234.6578.47.1-336.0122.1112.9111.5107.8120.2

us-gaap:ForeignExchangeContract, us-gaap:Sales



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value11001-1110-2
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax-11.265.4-478.492.9436.0-22.1-12.9-11.5-7.8-20.2

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value-1010-105-9-12-8131846-4-113-12-50-1-12-70304-2-257-104-4-370-7
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value20000-1322-30-1-2011-230004-30010020-12000-101
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherDepreciationAndAmortization



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-31
Value10910101010101010977786776666666655555544333
Percentage of OtherDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:MaterialReconcilingItems



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-14-25-17-25-3213-2-351-27
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfOtherEquity



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312016-07-312016-04-302016-01-312015-07-312015-04-302015-01-312014-04-302014-01-31
Value020020033-2020-200205-2040-3603600
Percentage of PaymentsForRepurchaseOfOtherEquity0.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-31
Value2144392103301101271601905
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-07-312018-04-302018-01-312017-07-312017-04-302017-01-312014-10-312013-10-312012-10-312012-01-312011-01-312010-01-31
Value757500033560800187210385523
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.00.00.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312017-10-312016-10-312015-10-31
Value0230002000
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.00.00.00.0100.00.00.00.0

us-gaap:ProceedsFromLinesOfCredit



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-31
Value80196043185516504505020100150012530305016002500020000
Percentage of ProceedsFromLinesOfCredit100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.00.00.0100.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-31
Value0000000100-10-10-2-10-100000-400-4-3
Percentage of ProceedsFromPaymentsForOtherFinancingActivities0.00.00.00.00.0100.00.0100.00.00.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfTreasuryStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value8314492476651134612471655781740-3282431036-73121411559154741528
Percentage of ProceedsFromSaleOfTreasuryStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-01-312011-01-312010-01-31
Value5425210020000000000000000000-122000
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:OperatingExpense, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-31
Value00-3-3-4-4-115320-1-2-2-2-3-3-7-6-6-3
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Sales, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-31
Value0000000001000-1-4-2-102402
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-45.120.6-11.8-17.4-4.7-3.55.7-15.6-3.045.8-15.6-112.532.783.4207.3127.537.9-5.4-35.9-62.6-0.4-69.3

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-31
Value00-2-3-4-4-115520-1-3-6-5-5-3-5-2-6-1
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent54.9120.688.282.695.396.5105.784.497.0145.784.0-12.5132.7183.4307.2227.3137.694.763.937.399.530.4

us-gaap:RepaymentsOfDebt



Period End2020-01-312019-01-312018-01-312017-01-312016-01-312015-01-312014-01-312013-01-31
Value3112213572277
Percentage of RepaymentsOfDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-31
Value2981319140110205612126002000150000
Percentage of RestructuringCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.00.00.00.00.0

us-gaap:RestructuringCostAndReserve

snps:EmployeeSeveranceandBenefits



Period End2020-04-302020-01-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302017-10-312017-07-312017-04-302017-01-31
Value246191461101561212
Percentage of RestructuringCharges83.269.799.8101.8-19428.699.7434.882.7100.999.699.9100.0

snps:InvoluntaryEmployeeTerminationAndVRP



Period End2020-04-302020-01-31
Value298
Percentage of RestructuringCharges100.1100.6

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-04-30
Value25
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value77241437508211912181720226231971117131183316111214714111917412155
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesTreasuryStockReissued



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value10011001001110111001101011112121321331
Percentage of StockIssuedDuringPeriodSharesTreasuryStockReissued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value1001100100
Percentage of StockIssuedDuringPeriodSharesTreasuryStockReissued100.0100.0100.0100.0100.0100.0100.499.799.9100.0

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value80044-1574-448-17453
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-27-40-22-101-11-27-16-91-6-22
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued-34.0-5526.0-50.7666.1-15.8642.0-34.6531.3-13.7-597.4

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value14000.05000.07000.012000.015000.03000.010000.011000.09000.05000.0
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued0.00.70.0-0.10.0-0.10.0-0.10.00.1

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value80044-1574-448-17453
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-04-302019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-210-9-26-3-7-6-12-6
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued-26.80.061.2-35.377.4-15.035.7-28.2-171.0

us-gaap:TreasuryStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value1294166951122671806432
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued160.95625.3150.7-627.3151.1-619.3149.6-466.9141.9868.3

us-gaap:AcceleratedShareRepurchasesDate

us-gaap:TreasuryStockAcquiredAverageCostPerShare

snps:AcceleratedShareRepurchaseProgramDecember2019ASR



Period End2020-02-29
Value149.75
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0

us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR, us-gaap:SubsequentEvent



Period End2020-05-22
Value140.41
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

us-gaap:TreasuryStockSharesAcquired



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302012-10-312012-04-302012-01-312011-07-312011-04-302011-01-312010-07-31
Value000000010111111203100310012010013623
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AcceleratedShareRepurchasesDate

snps:AcceleratedShareRepurchaseProgramDecember2019ASR



Period End2020-02-29
Value700000.0
Percentage of TreasuryStockSharesAcquired0.0

us-gaap:AcceleratedShareRepurchasesDate, us-gaap:SubsequentEventType

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR, us-gaap:SubsequentEvent



Period End2020-05-222020-05-22
Value148953.0700000.0
Percentage of TreasuryStockSharesAcquired0.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value0040009-101
Percentage of TreasuryStockSharesAcquired100.0100.0557.5-100.0100.0100.03285.2-100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-31
Value10080120100802933132751808012010080801202018080360144
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value-7000.0-6000.0-46000.08000.0-8000.0-3000.0-91000.015000.0-9000.0-20000.0
Percentage of TreasuryStockValueAcquiredCostMethod-0.0-0.0-0.00.0-0.0-0.0-0.30.0-0.0-0.0

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value7000.06000.046000.0-8000.08000.03000.091000.0-15000.09000.020000.0
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.0-0.00.00.00.3-0.00.00.0

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value1008012010080293313275180
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-31
Value10080538-1008029807-13275180
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0448.6-100.0100.0100.02445.5-100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:IncomeTaxAuthority, us-gaap:IncomeTaxAuthorityName, us-gaap:TaxPeriod

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities

srt:Subsidiaries, us-gaap:ForeignCountry, snps:HungarianTaxAuthority, snps:TaxYear2014TaxYear2018



Period End2020-04-30
Value6
Percentage of UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities100.0

us-gaap:VariableLeaseCost



Period End2020-04-30
Value1
Percentage of VariableLeaseCost100.0

us-gaap:AcceleratedShareRepurchasesDate

snps:AcceleratedShareRepurchaseInitialShareDeliveryAmount

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR



Period End2020-02-29
Value80
Percentage of AcceleratedShareRepurchaseInitialShareDeliveryAmount100.0

snps:BusinessCombinationDesignServiceArrangement



Period End2020-04-30
Value10
Percentage of BusinessCombinationDesignServiceArrangement100.0

snps:IncomeTaxReceivableAndPrepaidTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302012-10-31
Value182124295955764446444855555456514848463633282618181918182017
Percentage of IncomeTaxReceivableAndPrepaidTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedIncomeTaxesNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value24292927344750363795332337373933343437393942503742505345575152447882929895128128
Percentage of AccruedIncomeTaxesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-312010-10-31
Value-12-2-4-7-9-13-23-15-11244-3-9-19-22-15-23-14-14-17-22-11-5-1-5-1-504-1-12-6
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-312010-10-31
Value-91-80-87-89-87-83-89-78-60-49-70-72-75-89-84-87-87-104-90-81-70-74-50-36-38-40-26-34-28-20-14-8-9
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value165516261635159716591654164415911678161216221631166116401644160516421602161016041603158616141594161416011597158115991589158515701574154015211542153915431541
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value412399415378451351377291298340758701576369666572470348392518552528554581571654679574445286340719594609633672570
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value3876854310221616816014714614414113214015015314996111312111820513133151157168
Percentage of AssetsFairValueDisclosure0.92.11.81.71.91.51.31.33.46.72.224.127.840.022.025.230.038.135.929.127.828.31.71.12.12.01.81.94.27.31.50.20.721.923.823.429.6

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value416407423385459356382295308363774869737517813716611481533669705678563587583667691585464307345720598743784830739
Percentage of AssetsFairValueDisclosure100.9102.1101.8101.7101.9101.5101.3101.3103.4106.7102.2124.1127.8140.0122.0125.2130.0138.1135.9129.1127.8128.3101.7101.1102.1102.0101.8101.9104.2107.3101.5100.2100.7121.9123.8123.4129.6

us-gaap:FairValueByAssetClass, us-gaap:InvestmentType

us-gaap:AvailableForSaleSecurities

us-gaap:MoneyMarketFunds, us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302015-10-31
Value1681331661302061221657085120560510392188499403308233
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-31
Value1681331661302061221657085120560513400190504405316207239359397388409
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.8102.0101.5101.1100.6102.90.0102.40.00.00.00.0

us-gaap:FairValueByAssetClass, us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesAmortizedCost

us-gaap:MoneyMarketFunds, us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302015-10-31
Value1681331661302061221657085120560510392188499403308233
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentType

us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-31
Value1681331661302061221657085120560513400190504405316207239359397388409
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.8102.0101.5101.1100.6102.90.0102.40.00.00.00.0

us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01000.00.00.00.00.0
Percentage of AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.00.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitions



Period End2020-04-302018-10-312018-07-312018-04-302014-07-31
Value2551505022
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

snps:SemiconductorAndSystemDesign



Period End2020-04-30
Value20
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles81.7

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302015-10-31
Value1681331661302061221657085120560510392188499403308233
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring, us-gaap:CashEquivalents



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302015-10-31
Value1681331661302061221657085120560510392188499403308233
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNet



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value193205210205168167126
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value1521150113021230125513251104
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value1396140412121138119412621152
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value1259690916063116
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

us-gaap:DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible

srt:Maximum



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value62524267217
Percentage of DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value243265249248244229212220212220197191184177163164157149158161157151145141137133126119115111100979893909383
Percentage of DeferredCompensationLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-04-302019-10-31
Value430390
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredTaxAssetsNetNoncurrent



Period End2020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value407390339352337404167138187243382367355281278282280178211210227208204203235243270270281239284280267281278262264268
Percentage of DeferredTaxAssetsNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherAssets, us-gaap:DesignatedAsHedgingInstrument



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312011-10-31
Value38768543102216171194352611121696111212101516512
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherAssets, us-gaap:Nondesignated



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-31
Value00000000000001000000110000003300
Percentage of DerivativeFairValueOfDerivativeAsset6.53.00.71.25.20.92.70.20.60.90.11.86.916.50.62.30.90.00.04.98.69.20.02.65.07.00.29.721.622.81.314.5

us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:AccruedLiabilities, us-gaap:DesignatedAsHedgingInstrument



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-31
Value11237913221253217101919131810121825113355
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilities, us-gaap:Nondesignated



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-31
Value000000000100000000000000000
Percentage of DerivativeFairValueOfDerivativeLiability0.84.04.61.61.72.70.60.910.129.82.46.81.80.60.53.46.92.41.40.30.70.10.83.01.20.62.6

us-gaap:DerivativeFairValueOfDerivativeNet



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312012-10-31
Value-7630-1-8-18-9318141540-15-17-9-16-30-5-623-8-7-70
Percentage of DerivativeFairValueOfDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNotionalAmount



Period End2020-04-302020-01-312019-10-31
Value896707817
Percentage of DerivativeNotionalAmount100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value307266417391272241413338234212382297230176321254198171315257219158302258216166302254207159299229186142238217216
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized



Period End2020-04-302020-01-312019-10-31
Value420467344
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeStock



Period End2020-04-302020-01-31
Value5229
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized12.56.3

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value11871162113911151090106410351005973941912887860831801771738705666627593560527494460427398367334301269239213185168151192
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

snps:CapitalizedSoftwareDevelopmentCosts



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value373635343433323130302928272625242322212019181716151514131211107
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization3.13.13.13.13.13.13.23.23.23.23.23.23.13.13.13.13.13.23.23.33.33.33.43.43.53.53.63.63.73.94.14.7

snps:DevelopedAndCoreTechnology



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value680667655642629615598581563544526511495479460440419397375353334316298279261243228211194176159104
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization57.357.457.557.657.757.857.957.957.857.857.757.657.657.657.557.156.856.456.356.456.456.556.656.656.857.057.257.558.058.659.462.1

us-gaap:ContractualRights



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value1831811811801791781771761741731721711681641621561531501411311241161091019385787061524336282119179
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization15.415.715.916.216.416.817.117.518.018.418.919.319.619.820.220.320.821.321.321.020.920.820.720.520.320.119.819.318.517.516.315.013.611.711.811.65.0

us-gaap:CustomerRelationships



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value25925024223222321420419418517516616015314613913412712111510810397928680746964595348433834312855
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization21.921.621.220.920.520.119.719.419.018.618.318.117.917.717.517.417.317.217.317.417.417.517.517.517.517.517.517.517.617.818.018.118.318.618.618.628.6

us-gaap:TrademarksAndTradeNames



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-31
Value272625242423212019181716151413131211109987765553
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.32.32.22.22.22.22.12.12.02.01.91.91.81.81.71.71.71.61.61.61.51.51.51.41.41.31.41.41.4

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value1466144514181398139713961395139913951376116611351134113310681066105810421030945896892893861859735734731731732735590577367364354441
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

snps:CapitalizedSoftwareDevelopmentCosts



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value4241403837363535343332323130292827262524232221212019181716151411
Percentage of FiniteLivedIntangibleAssetsGross2.92.82.82.72.72.62.62.52.52.42.82.92.82.72.82.72.62.52.52.62.62.52.42.42.32.62.52.42.22.12.03.1

snps:DevelopedAndCoreTechnology



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-31
Value817814791773773773773772767749647622622622610610604595584540493490490459449382380377373371367226
Percentage of FiniteLivedIntangibleAssetsGross55.756.355.855.355.355.455.455.255.054.455.654.954.955.057.257.257.157.156.757.255.055.054.953.352.352.051.851.651.150.750.062.3

us-gaap:ContractualRights



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value18618618418418318418318418418317417317317317116816716516514714514514614614614014014014014114211611633333230
Percentage of FiniteLivedIntangibleAssetsGross12.712.913.013.213.213.213.213.113.213.315.015.315.315.316.015.815.815.916.115.616.216.316.417.017.119.019.119.119.219.319.419.820.29.19.19.16.9

us-gaap:CustomerRelationships



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value376359358358358358358358358354278276276276235235235232231211209209210210210176177176176177179134132808078113
Percentage of FiniteLivedIntangibleAssetsGross25.724.925.325.625.725.725.725.625.725.723.924.424.424.422.122.122.322.222.522.423.423.523.524.424.524.124.124.124.224.224.422.823.022.022.022.125.6

us-gaap:InProcessResearchAndDevelopment



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-31
Value111111178126444022331134617
Percentage of FiniteLivedIntangibleAssetsGross0.10.10.10.10.10.10.10.50.60.90.60.40.40.40.00.30.30.30.41.30.50.60.92.4

us-gaap:TrademarksAndTradeNames



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312012-10-31
Value4242424242424242424225252525202020202019181818181810101010
Percentage of FiniteLivedIntangibleAssetsGross2.93.03.03.13.13.13.13.13.13.12.22.22.22.21.91.92.02.02.02.02.12.12.12.22.21.51.51.51.5

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

us-gaap:ForeignCurrencyContractAssetFairValueDisclosure

us-gaap:ForwardContracts, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312015-10-31
Value3876854310221617121046
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForwardContracts, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312015-10-31
Value3876854310221617121046
Percentage of ForeignCurrencyContractAssetFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:ForwardContracts, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302017-10-31
Value112371013231362
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:ForwardContracts, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302017-10-31
Value112371013231362
Percentage of ForeignCurrencyContractsLiabilityFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312013-10-31
Value243265249248244229212220212220197191184177163164157149158000000
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value112371013231364218102020141810121925113355521415101616613
Percentage of LiabilitiesFairValueDisclosure4.91.01.62.94.15.810.95.93.02.21.31.04.45.912.312.49.212.46.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value000000000000000000000000000000112448
Percentage of LiabilitiesFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312010-10-31
Value2552682532552542422352342192252001921921871831841711671681219251133655225161119211021
Percentage of LiabilitiesFairValueDisclosure104.9101.0101.6102.9104.1105.8110.9105.9103.0102.2101.3101.0104.4105.9112.3112.4109.2112.4106.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:RevolvingCreditFacility



Period End2020-01-312019-07-31
Value1900
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.00.0

us-gaap:DebtInstrument

snps:TheCreditAgreement



Period End2020-01-312019-07-31
Value2518
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity13.20.0

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

us-gaap:LinesOfCreditCurrent

us-gaap:RevolvingCreditFacility, snps:TheCreditAgreement, us-gaap:UnsecuredDebt



Period End2020-04-302019-10-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-31
Value10001504003304853854300290270170205255220190160
Percentage of LinesOfCreditCurrent100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiability



Period End2020-04-302020-01-31
Value534527
Percentage of OperatingLeaseLiability100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-04-302020-01-312019-10-31
Value72680
Percentage of OperatingLeaseLiabilityCurrent100.0100.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-04-302020-01-312019-10-31
Value4624590
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.00.0

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

us-gaap:OtherAssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, snps:DeferredCompensationPlanAssets



Period End2020-04-302020-01-312019-10-312018-10-31
Value243265249212
Percentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:FairValueMeasurementsRecurring, snps:DeferredCompensationPlanAssets



Period End2020-04-302020-01-312019-10-312018-10-31
Value243265249212
Percentage of OtherAssetsFairValueDisclosure100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherLiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312014-10-31
Value243265249248244229212220212220197191184177163164157149158145
Percentage of OtherLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueMeasurementsRecurring



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312014-10-31
Value243265249248244229212220212220197191184177163164157149158145
Percentage of OtherLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherSundryLiabilitiesNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312013-10-31
Value17187390796653525859545652504748474343433953132238
Percentage of OtherSundryLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseOtherNoncurrent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302011-10-31
Value1515151322541388694992015151513181719181334179977898922241
Percentage of PrepaidExpenseOtherNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:RestrictedCash

us-gaap:OtherNoncurrentAssets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value725000.0756000.0756000.0730000.0721000.0732000.0722000.0
Percentage of RestrictedCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value1111111
Percentage of RestrictedCash175.0154.8155.3160.4161.7159.7161.2

us-gaap:Range, us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringAndRelatedCostExpectedCost1

srt:Maximum, snps:EmployeeSeveranceandBenefits



Period End2020-01-312019-07-312019-04-302018-07-312018-04-30
Value6565651010
Percentage of RestructuringAndRelatedCostExpectedCost1100.0100.0100.0100.0100.0

srt:Minimum, snps:EmployeeSeveranceandBenefits



Period End2020-01-312019-07-312019-04-302018-07-312018-04-30
Value56433588
Percentage of RestructuringAndRelatedCostExpectedCost186.266.253.880.080.0

us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringReserve

snps:EmployeeSeveranceandBenefits



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-31
Value30252220618009171511125
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermBorrowings



Period End2020-04-302019-10-31
Value12117
Percentage of ShortTermBorrowings100.0100.0

us-gaap:AcceleratedShareRepurchasesDate

us-gaap:StockRepurchaseProgramAuthorizedAmount1

snps:AcceleratedShareRepurchaseProgramFebruary2020ASR



Period End2020-02-29
Value100
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312013-07-312013-04-302013-01-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value42804154408839393915378434853164326031403279319531333056278827362698260225432101210018441528
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value-104-83-92-96-96-97-113-94-62-37-65-104-105-62-28-15-20-15-3-35
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.4-2.0-2.3-2.5-2.5-2.6-3.2-3.0-1.9-1.2-2.0-3.3-3.4-2.0-1.0-0.6-1.0-0.8-0.2-2.3

us-gaap:AdditionalPaidInCapital



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value16551626163515971659165416441591167816121622164416101614159715851521154115001471
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest38.739.240.040.642.443.747.250.351.551.349.551.551.452.857.362.372.473.481.396.2

us-gaap:CommonStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value11111111111111111111
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.1

us-gaap:NoncontrollingInterest



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-31
Value555555554440000420
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.20.20.20.10.10.10.00.00.00.01.70.0

us-gaap:Parent



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-31
Value4275414840833933390937783479315832563136327531953133305627882501210121001844
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.999.999.999.999.999.899.899.899.999.999.9100.0100.0100.0100.098.3100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value3356326831643003291228202543229622232133214319471725155113241098957770574434
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest78.478.777.476.274.474.573.072.668.267.965.461.055.150.847.543.245.636.731.228.4

us-gaap:TreasuryStock



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312016-10-312015-10-312014-10-312013-10-312012-10-312011-10-312010-10-312009-10-312008-10-31
Value-634-664-625-572-567-600-597-636-585-574-426-294-98-49-106-168-358-197-228-342
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-14.8-16.0-15.3-14.5-14.5-15.9-17.2-20.1-17.9-18.3-13.0-9.2-3.1-1.6-3.8-6.6-17.0-9.4-12.4-22.4

us-gaap:TreasuryStockShares



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-312018-07-312018-04-302018-01-312017-10-312017-07-312017-04-302017-01-312016-10-312016-07-312016-04-302016-01-312015-10-312015-07-312015-04-302015-01-312014-10-312014-07-312014-04-302014-01-312013-10-312013-07-312013-04-302013-01-312012-10-312012-07-312012-04-302012-01-312011-10-312011-07-312011-04-302011-01-312010-10-31
Value67667778886766555521231123323568101313131088
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledContractsReceivable



Period End2020-04-302020-01-312019-10-312019-07-312019-04-302019-01-312018-10-31
Value40383838383636
Percentage of UnbilledContractsReceivable100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

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


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService


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


us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents


us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass


us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents