CTAS


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ProductOrService
us-gaap:CostOfRevenue

us-gaap:IncomeLossFromContinuingOperations
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

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

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss

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

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet
ctas:OtherAssets
us-gaap:OtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
ctas:OtherAssets

us-gaap:OtherAssets
ctas:OtherAssets

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LiabilitiesNoncurrent

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

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

ctas:FiniteLivedIntangibleAssetsAmortization
us-gaap:StatementBusinessSegments

ctas:IncreaseDecreaseInUniformsAndOtherRentalItemsInService

ctas:NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities

ctas:OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsNetOfTax

ctas:ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAverageCost

ctas:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted

ctas:UnrecordedUnconditionalPurchaseObligationAdditions

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:CapitalizedContractCostAmortization
us-gaap:ConcentrationRiskByBenchmark
us-gaap:ConcentrationRiskPercentage1
us-gaap:ConcentrationRiskByBenchmark, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:Depreciation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:FinitelivedIntangibleAssetsAcquired1
us-gaap:StatementBusinessSegments

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GoodwillAcquiredDuringPeriod
us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfOtherProductiveAssets

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:RepaymentsOfSeniorDebt

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:ShareRepurchaseProgram
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:TreasuryStockSharesAcquired
us-gaap:ShareRepurchaseProgram
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents
us-gaap:SubsequentEventType

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation
us-gaap:ShareRepurchaseProgram
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents
us-gaap:SubsequentEventType

us-gaap:UnrecordedUnconditionalPurchaseObligationPurchases

ctas:AccumulatedAmortizationOfOtherAssets
ctas:OtherAssets

ctas:DeferredTaxAssetsOperatingLeaseLiabilities

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsuranceAndContingencies

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventoryObsolescence

ctas:DeferredTaxAssetsTreasuryLocks

ctas:DeferredTaxLiabilitiesDeferredExpenseCapitalizedContractCosts

ctas:DeferredTaxLiabilitiesInventory

ctas:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets

ctas:DeferredTaxLiabilitiesStateTaxesAndOther

ctas:EmployeeRelatedLiabilitiesCurrentDefinedContributionPlansAndProfitSharing

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssets

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseAfterYearFour

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseRemainderOfFiscalYear

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearFour

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearOne

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearThree

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearTwo

ctas:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
ctas:LongTermDebtCurrentMaturitiesGross

ctas:OtherAssetsGross
ctas:OtherAssets

ctas:ServiceContractsFiniteLivedIntangibleAssetsNet

ctas:UniformsAndOtherRentalItemsInService

dei:EntityPublicFloat

us-gaap:AccountsPayableAndAccruedLiabilitiesNoncurrent

us-gaap:AccruedInsuranceCurrent

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

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:CashSurrenderValueOfLifeInsurance

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

us-gaap:DebtInstrumentFairValue
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredFinanceCostsCurrentNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanName

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

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

us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquityMethodInvestments

us-gaap:EquitySecuritiesFvNiCost
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryValuationReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:Investments

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

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

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherInvestments

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:RestructuringReserve
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShortTermBorrowings
us-gaap:ShortTermDebtType

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Inventories
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock Cash
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
InventoryNet
Inventory Raw Materials Net Of Reserves
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:CommonStockValue 1417.343NANANA1102.689NANANA840.328NANANA618.464NANANA485.068NANANA409.682399.927394.728387.314329.248320.248309.915294.795251.753233.927225.372217.107186.332178.29173.127171.091148.255145.12144.842144.523135.401135.276135.254NA132.058NANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock███▇▆▆▆▅▄▄▄▄▂▂▂▂▁189.071188.914188.601188.156186.793186.632186.298185.953184.791184.559184.153184.056182.723182.558182.339182.044180.993NANANA179.598NANANA178.117NANANA176.378NANANA174.786NANANA0.173746NANANA173.346NANANA173.207NANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:TreasuryStock█▇▇▇▇▆▆▆▅▄▄▂▂▁▁▁▁85.0183.87583.61583.60883.37882.60582.59582.58881.50679.62779.02977.08676.39775.87775.86975.86475.592NANANA75.385NANANA66.414NANANA59.341NANANA52.505NANANA-0.047226NANANA-35.762NANANA-20.338NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding NA107.996107.981107.129NA107.588107.335107.083NA108.162109.874110.648NA110.175109.818108.537NA107.892107.647107.114NA109.463110.113112.229NA117.867118.655118.03NA121.28121.05122.892NA123.757124.609126.458NA129.945129.74131.338NA145.303145.511152.164NANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic NA105.264104.999104.11103.758104.245103.959103.543105.018105.08106.475106.835106.593106.558106.34105.74105.325105.093104.957104.483106.136107.843108.301110.597113.666116.178117.115116.659119.541119.913119.907122.13122.392123.12124.185126.11128.788129.735129.727131.309143.317145.303145.511152.164NANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NA0.10.20.2NA0.20.20.2NA0.70.40.3NA1.00.50.6NA0.30.70.7NA0.30.30.5NA0.40.50.6NA0.40.50.6NA0.60.40.8NA1.13.32.5NA3.53.55.0NANANA
us-gaap:EarningsPerShareBasic ▇▆▇▇▄▆▆▆▆▅▆▅▄▇▃▅▂▃▄▃▃▃█▂▂▂▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁2.52999999999999942.442.692.861.3799999999999992.232.352.42.131.912.251.961.712.791.262.020.78000000000000021.11.321.291.21999999999999981.073.110.890.91000000000000010.811.020.941.040.70.710.630.690.60.630.610.60.580.570.520.490.410.380.40.35999999999999990.320.37
us-gaap:EarningsPerShareDiluted ▆▆▇▇▄▆▆▆▅▅▆▅▄▇▃▅▂▃▃▃▃▃█▂▂▂▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁2.462.372.622.781.34999999999999962.162.272.322.06000000000000051.852.181.891.65999999999999932.711.231.960.75999999999999981.071.291.261.211.053.060.880.89999999999999990.81.00.931.030.690.70.630.690.60.630.60.60.580.570.520.490.410.380.40.35999999999999990.320.37
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▇▇▇█▃▆▆▇▆▅▆▅▄█▃▄▁▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁2.5299999999999995e-062.44e-062.69e-062.8599999999999997e-061.38e-062.23e-062.35e-062.4e-062.13e-061.89e-062.25e-061.96e-061.74e-062.73e-061.2700000000000001e-061.5e-067.6e-071.1100000000000002e-061.16e-061.29e-061.0900000000000002e-061.0700000000000001e-061.0500000000000001e-069.399999999999999e-078.8e-078.000000000000001e-078.7e-079.399999999999999e-071.0500000000000001e-067e-077e-076.3e-07NANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▇▇▇█▃▆▆▇▆▅▆▅▄█▃▄▁▂▃▃▂▂▂▂▂▂▂▂▂▁▁▁2.46e-062.37e-062.62e-062.7799999999999996e-061.35e-062.16e-062.27e-062.32e-062.06e-061.83e-062.1800000000000003e-061.89e-061.68e-062.66e-061.24e-061.4499999999999999e-067.5e-071.08e-061.13e-061.26e-061.08e-061.0500000000000001e-061.03e-069.300000000000001e-078.6e-077.900000000000001e-078.6e-079.300000000000001e-071.04e-066.9e-076.9e-076.3e-07NANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
 Cost Ratio us-gaap:ProductOrService ctas:OtherProductsAndServicesNA359.191346.56NANA362.627373.773NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ProductOrService ctas:OtherProductsandServicesNANANA352.164348.614362.627373.773356.612365.338324.008327.49323.037326.764304.622298.403299.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ProductOrService ctas:UniformRentalAndFacilityServicesNA1417.8651410.488NANA1448.0211469.976NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ProductOrService ctas:UniformRentalandFacilityServicesNANANA1394.4111270.971448.0211469.9761454.5271428.3921358.3221390.7781374.9381342.7861284.5161308.0381311.784NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ctas:FirstAidAndSafetyServicesNA198.474194.419NANA170.541169.668NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ctas:FirstAidandSafetyServicesNANANA204.481196.27170.541169.668172.09163.535149.17153.348153.417147.707137.327139.09140.582134.358124.239124.797124.839122.793119.064120.43899.48884.92779.47182.27179.924NANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ctas:UniformRentalAndFacilityServicesNA1417.8651410.488NANA1448.0211469.976NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,ctas:UniformRentalandFacilityServicesNANANA1394.4111270.971448.0211469.9761454.5271428.3921358.3221390.7781374.9381342.7861284.5161308.0381311.7841203.931993.3981005.565999.596965.124936.565937.704938.408891.269883.401891.475873.698NANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:AllOtherSegments▆▅▄▄▄▇█▆█▆▆▅▆▅▅▅▁▅▅▅▆▅▅▅▅▄▄▄181.876160.717152.141147.683152.344192.086204.105184.522201.803174.838174.142169.62179.057167.295159.313159.137112.904163.498166.561169.695183.488160.454160.938160.994166.387145.975149.633148.455NANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
 TTM Greenblatt ROC _ _█▇██▄▇▇▇▇▆▆▆▆▄▅▅▃▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁356.446326.468352.872349.706207.434314.652334.464306.146314.411278.255275.64265.228265.5200.024235.211249.099169.177194.695202.858206.961202.94192.952200.349185.507177.719173.617181.175163.488123.806150.162152.972140.07153.871133.023139.023139.294140.832137.536132.685128.574128.877108.876102.344100.246NANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:ComprehensiveIncomeNetOfTax ▇█▇█▂▄▆▅▄▄▅▅▄▇▃▆▂▃▄▃▃▂█▂▂▁▂▂▃▂▂▂▂▁▂▂▁▂▁▁▁▁▁▁311.578342.823303.4337.43586.019176.541269.936227.338186.555199.881237.017206.033179.997304.175125.543252.24393.147123.35159.503126.553139.698101.347347.42488.648101.00773.11111.104108.498120.179.86887.19777.58285.65266.98580.1884.08564.20187.8953.99769.40464.78874.57266.06464.239NANANA
 us-gaap:CostOfRevenue us-gaap:ProductOrService ctas:OtherProductsAndServicesNA205.69197.353NANA201.323206.421NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfRevenue us-gaap:ProductOrService ctas:OtherProductsandServicesNANANA204.962195.162201.323206.421193.321199.109178.206181.991176.81179.214170.537166.112165.287NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfRevenue us-gaap:ProductOrService ctas:UniformRentalAndFacilityServicesNA761.85739.811NANA784.93784.937NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfRevenue us-gaap:ProductOrService ctas:UniformRentalandFacilityServicesNANANA715.412716.602784.93784.937768.676771.056748.971761.119746.453737.998718.138723.96706.863NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperations ▃▁█267.722258.384284.857NA144.585234.52246.443250.812226.171200.923242.994212.547189.298295.789137.737161.10882.174118.647123.454138.091118.011117.279115.453106.198101.20493.636103.446109.791128.10584.32684.45677.398NANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▇██▄▇▇▇▇▆█▆▆▄▅▅▂▄▄▄▄▄▄▄▃▃▃▄▅▃▃▂▃▂▂▂▂▂▂▂▂▂▁▁▁▁▂331.993302.003328.533325.22181.678289.056308.57278.987288.9251.555320.524241.42241.042174.507206.373219.079123.918181.01189.622192.854187.495177.124184.289169.214159.828157.459165.265175.316213.884133.788136.571123.615137.404116.853122.878122.773123.289120.69115.36111.605116.90696.63690.57788.5589.69872.85894.124
us-gaap:IncomeTaxExpenseBenefit ▇▇▇▆▆▇▇▆▇▇█▆▇▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▆▇▇▆▆▆▆▆▆64.27143.61943.67625.21537.09354.53662.12728.17562.72950.63277.5328.87351.744-121.28268.63657.97146.82462.36366.16854.76369.48459.84568.83663.01656.84857.05261.81965.52586.6649.18651.70945.86151.42742.14844.85146.0444.67544.65541.0142.96746.1337.56634.71127.27334.2223.87636.948
us-gaap:InterestExpense ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅█▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁24.55124.55224.55724.5525.95225.94326.17727.32125.78226.7724.8824.30424.82825.90129.12930.31745.38913.69613.26714.17215.77616.16316.17116.41216.39516.25415.92916.58316.39616.41816.48516.52316.51816.30216.29416.59818.34417.21917.72817.33412.74912.5212.16112.27412.4211.57512.579
us-gaap:NetIncomeLoss ▆▆▇▇▃▅▆▆▅▅▆▅▄▇▃▅▂▃▃▃▃▂█▂▂▂▃▂▃▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁267.722258.384284.857300.005144.585234.52246.12250.812226.119203.334243.013212.515186.171302.095137.109217.21184.235118.005140.377138.091130.898117.341345.1100.181105.21594.883120.412110.108127.22484.60284.86277.75485.97774.70578.02776.73378.61476.03574.3568.63870.77659.0755.86661.277NANANA
us-gaap:OperatingIncomeLoss █▇██▄▇▇▇▇▆▆▆▆▄▅▅▃▄▄▄▄▄▄▄▃▃▃▃▂▃▃▂▃▂▂▂▂▂▂▂▂▂▁▁▁▁▂356.446326.468352.872349.706207.434314.652334.464306.146314.411278.255275.64265.228265.5200.024235.211249.099169.177194.695202.858206.961202.94192.952200.349185.507177.719173.617181.175163.488123.806150.162152.972140.07153.871133.023139.023139.294140.832137.536132.685128.574128.877108.876102.344100.246101.51884.011106.389
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▇▆████▇▇▇▇▆▆▆▆▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁1835.6621777.0561757.0481746.5751619.5841810.6481843.7491811.1391793.731682.331718.2681697.9751669.551589.1381606.4411611.5031530.2871281.1351296.9231294.131271.4051216.0831219.081198.891142.5831108.8471123.3791102.0771157.4791130.2371143.7531120.3431129.0861075.6741060.3861051.3251053.5821012.1121019.1261017.181012.087937.827936.566923.904909.449861.812884.509
us-gaap:Revenues ██▇▇▆████▇▇▇▇▆▆▆▆▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁1835.6621777.0561757.0481746.5751619.5841810.6481843.7491811.1391793.731682.331718.2681697.9751669.551589.1381606.4411611.5031530.2871281.1351296.9231294.131271.4051216.0831219.081198.891142.5831108.8471123.3791102.0771157.4791130.2371143.7531120.3431129.0861075.6741060.3861051.3251053.5821012.1121019.1261017.181012.087937.827936.566923.904909.449861.812884.509
us-gaap:SellingGeneralAndAdministrativeExpense ▇▇▆▆▇▇▇█▇▆▇▇▆▇▆▇▅▄▄▄▃▃▃▃▂▂▂▂▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁502.604483.048467.012476.495500.386509.743517.927542.996508.24476.099491.671504.634471.807490.618468.084486.283425.747362.385365.222374.026350.778331.656327.051338.637308.941301.69300.249314.458323.932328.963323.947325.91313.344308.918293.013306.581303.036288.367297.112310.466304.17283.045288.304293.425286.93275.596259.406
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:Assets ███▇▇▇▇▇▆▆▆▆▆▆▆▆▆▂▁▁▁▂▂▁▁▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▂▁▁▁▁8236.8238347.4978454.7538043.3817669.8857901.987887.3377661.97436.6627433.6737405.0837287.2046958.2146928.5936978.8016851.6066844.0574271.1644214.5794167.1454104.3934231.214450.7924122.9494192.464266.3464697.5714556.274462.4524400.4414365.3984311.1774345.6324221.2994217.8824152.2354160.9064253.1674215.3124127.8924351.943972.073928.2953890.9043969.736NANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▇▇▇▆▆▆▆▆▆▆▆▆▂▁▁▁▁▂▁▁▂▂▂▂▂▂▂▂▁▁▁▁▂▁▁▂▁▁8236.8238347.4978454.7538043.3817669.8857901.987887.3377661.97436.6627433.6737405.0837287.2046958.2146928.5936978.8016851.6066844.0574271.1644214.5794167.1454104.3934231.214450.7924122.9494192.464266.3464697.5714556.274462.4524400.4414365.3984311.1774345.6324221.2994217.8824152.2354160.9064253.1674215.3124127.8924351.943972.073928.295NA3969.736NANA
us-gaap:StockholdersEquity ██▇▇▆▆▅▅▅▆▅▆▅▅▄▄▃▂▂▂▁▁▁▁▁▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▃3687.8473816.513597.963604.8043235.2023324.3093104.973050.7063002.7213179.4923027.2443345.9683016.5262893.9972553.0332565.8812302.7932178.2582025.7051987.4021842.6591950.1061924.5281848.6691932.4552047.6662203.3342271.9742192.8582244.0332147.9722196.0112201.4922130.2462080.6442154.4152139.1352196.6272102.6192114.4852302.649NANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:AssetsCurrent ▇██▆▅▆▆▅▅▅▅▄▄▄▄▃▃▂▂▂▂▃▄▃▃▃▄▄▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁2843.3092978.5563102.7732666.1772309.6992497.7062490.2872289.8182236.282223.7562215.872104.3781977.9321979.5762043.4491924.5531954.4781629.9411600.6621594.7481590.0351758.8242043.281733.9521735.8071710.1252145.982012.9491805.6811664.9091618.7821572.2891624.8261509.4521519.6621523.8771541.5681625.5361591.8681482.6151700.7771322.9381354.846NA1524.944NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▅▇▄▂▂▂▁▁▁▁▁▂▂▂▂▂▂▂▁▂▃▆▂▄▄█▆▅▄▃▃▄▂▃▃▃▂▂▂▄▂▃▃▄▄▃493.64553.611703.175421.542145.402234.441226.535102.13196.64580.85988.479118.356138.724152.563236.002191.414169.266147.244143.57399.209139.357315.116606.785146.86417.073358.32826.724581.453513.288348.859309.334278.67352.273217.47242.487319.217339.825217.983207.772150.312438.106184.731260.953290.646411.281406.503342.014
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆▆█▅▂▃▃▁▁▁▁▁▂493.64553.611703.175421.542145.402234.441226.535102.13196.64580.85988.479118.356138.724NANANA169.266NANANA139.357NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▇██▇▇████▇▇▇▆▆▆▅▅▄▄▃▃▃▃▃▂▂▂▂▂▃▃▂▂▂▂▂▂▁▂▁▁▁▁901.71929.492910.266866.414870.369942.853949.122917.535910.12878.037904.062838.192804.583779.22763.555731.577736.008598.863607.452586.372563.178550.748549.19531.127496.13497.978510.153489.211508.427529.668520.523511.642496.049495.124479.106459.302450.861439.65447.35439.09429.131416.295402.369NA366.301NANA
us-gaap:InventoryNet ▇██▇▅▄▄▄▄▄▃▃▃▂▂▃▃▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▂▂▁481.797533.211534.128488.165408.898352.924348.304336.29334.589339.805321.874303.77280.347274.819272.83283.197278.218272.181263.301262.156249.362255.203251.477240.046226.211234.641235.86249.817251.239256.132249.486245.47240.44246.957236.195241.699251.205275.673287.95280.214249.658232.294208.38NA169.484NANA
 us-gaap:OtherAssetsCurrent ctas:OtherAssets ctas:CapitalizedContractCost██▇▇▆▄▅▂▁79.479.178.777.576.274.574.971.369.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent █▇▇█▇▇▇█▆▆▆▆▂▂▂▂▁▃▂▂▁▁▁▂▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁▁▁133.776126.949125.465133.692114.619125.517123.589137.675103.318108.969106.614112.47432.38335.19238.05842.4930.13251.36341.46440.32926.06526.65327.47131.1724.0322.48223.59127.5926.1926.76126.61431.93424.5324.77825.03530.1724.70429.31628.36829.41923.481NANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:PropertyPlantAndEquipmentGross 3373.659NANANA3313.86NANANA3192.364NANANA3046.44NANANA2839.878NANANA2413.572NANANA2194.278NANANA2143.663NANANA2342.247NANANA2163.285NANANA2042.396NANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 2055.221NANANA1910.795NANANA1761.679NANANA1663.71NANANA1516.377NANANA1419.335NANANA1322.857NANANA1287.961NANANA1355.544NANANA1218.98NANANA1096.178NANANANANANA
us-gaap:AmortizationOfIntangibleAssets ██████████▇▇▄▄▄▃▃▁▁▁35.935.635.435.135.235.735.334.634.133.733.333.015.715.715.614.112.23.63.63.5NA4.44.23.6NA3.43.53.5NA5.15.35.1NANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇▇▇████████▇▇▇▇▇▄▄▃▃▂▂▂▁▁▁▁▁▃▃▃▃▃▃▂▂▂▂▂▂▂▂1318.4381329.931344.3331378.3851403.0651434.8661425.5841422.3511430.6851424.0631410.531394.6341382.731367.581353.1591340.661323.5011090.2091067.2141033.16994.237964.68916.544896.786871.421853.391845.127838.493855.702981.197988.897991.331986.703976.844967.26953.761944.305944.034938.664946.466946.218941.773923.535NA894.522NANA
us-gaap:Goodwill ████████████████▇▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂2913.0692895.2512889.7542886.0482870.022873.9962852.8012849.6132842.4412847.7832845.2442850.0822846.8882819.8672811.7962810.5042782.3351303.0381301.3911298.3751291.5931284.4341273.5941272.5031195.6121194.3891189.361189.9681267.4111532.5681532.9611531.0061517.561519.9871522.4111489.1041485.3751486.4651483.6351488.1521487.8821491.1161435.352NA1356.925NANA
us-gaap:FiniteLivedIntangibleAssetsNet █▅▅▅█▅▅▅▅▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▂▁▁▁719.864418.318430.923441.641760.607464.852469.933482.977494.595508.402521.505535.865545.768557.477565.574581.631586.98883.7285.51784.79283.71586.3870.18375.30642.43444.82441.5944.18555.67583.97288.39493.11992.15393.57390.4872.29776.822NANANA102.312107.46104.751NA103.445NANA
us-gaap:OperatingLeaseRightOfUseAsset █▂▁▃▄▆█▅168.532156.85154.022159.12159.967165.169169.233163.089NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▇▇▇▇▇▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▄▄▄▄▃▃▃▃▃▃▃310.414304.011280.494271.579260.758252.593260.626245.065240.315237.851228.386221.98329.31525.56629.1630.62731.96716.08819.26515.19419.86118.28520.64420.90817.49418.07918.6518.77819.626137.795136.364123.432124.39121.443118.069113.196112.836115.466114.484116.228114.751NANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:AccountsPayableCurrent ▆▇█▇▆▇▇▇▆▆▆▆▆▄▄▅▄▂▂▂▂▃▃▃▂▂▄▃▃▂▁▂▂▂▂▂▁▂▂▁▂▁▁230.786237.857274.021252.513230.995243.248254.611237.242226.02214.567211.9214.011215.074172.181162.981189.571177.051127.94127.815129.65114.514151.833134.843131.956109.607111.952171.629141.795150.07117.336103.242124.952121.029109.064118.534110.90694.84115.566111.136100.745110.279101.93592.206NA71.747NANA
us-gaap:AccruedIncomeTaxesCurrent NANANA23.25127.099NANA9.2380.0NANANANANANA25.5520.0NANA38.8290.052.541236.53947.640.00.017.45954.5955.969.0184.23823.3670.0NANA7.930.0NANA14.261NANANANANANANA
us-gaap:AccruedLiabilitiesCurrent ▅▅█▃▄▄▇▃▄▄▆▃▄▃▅▃▄▂▄▂▃▂▄▂▂▂▅▂▂▂▃▁▂▁▂▁▂▁▂▁▁▁▂518.91514.159791.158406.787456.653430.643674.24395.416433.94425.47611.641380.775420.129412.826577.96402.97429.809321.324469.085313.888349.065319.438443.713294.845309.935281.872502.861292.548299.727259.31360.627235.237271.821238.462325.077213.44256.642224.355318.961225.377242.691220.674321.209NA244.402NANA
us-gaap:DividendsPayableCurrent 79.135NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▅▆▄▃▄▅▄▄▄▄▂▃▃▄▄▄▄▃▂▃▃▄▄▂▂▃▂▂▂▂▂▂▂▂▁▂▂▃▂▁▁▁1934.0851270.361508.4721093.35885.1951066.6461297.2511122.8821127.733994.3511114.686679.094775.857917.5731154.3711044.7951130.852943.968748.757710.859815.555858.8041130.981959.326621.058579.231851.764636.011630.131552.802614.561515.695556.256500.752555.179384.111670.891648.561720.201618.646434.139391.636468.795NA383.682NANA
us-gaap:LongTermDebtCurrent █▃▃▃▁▃▃▄▃▃▂899.07249.936249.872249.8080.0199.8199.788338.776312.264217.5173.5NA0.0187.5300.0307.45362.9NANANA250.0250.0250.0250.00.00.00.00.00.5030.6330.7148.28.1870.6740.6610.636225.636225.633225.732226.0331.3351.6311.817NA0.609NANA
us-gaap:OperatingLeaseLiabilityCurrent ▆▆▁▄▃▇█▂43.8543.76742.68243.41443.03144.04344.26343.01NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent 129.56NANANA131.842NANANA112.076NANANA111.017NANANA121.267NANANA112.254NANANA94.622NANANA94.942NANANA81.078NANANA79.851NANANA94.862NANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:LiabilitiesNoncurrent ▅▇▇▇████▇▇▇▇▇▇▇▇█▁▂▂▂▂▂▂▃▃▃▃▃▃▃▃▂▂▂▃▂▂▂▂▃▁▁2614.8913260.6273348.3213345.2273549.4883511.0253485.1163488.3123306.2083259.833263.1533262.1423165.8313117.0233271.3973240.933410.4121148.9381440.1171468.8841446.1791422.31395.2831314.9541638.9471639.4491642.4731648.2851639.4631603.6061602.8651599.4711587.8841590.3011582.0591613.7091350.881407.9791392.4921394.7611615.1521107.4921064.387NA1052.025NANA
us-gaap:LongTermDebt ▁▅▅▅▇▇▇▇▇▇▇▇▇▇▇▇█1642.8332291.4182290.9322290.4472539.7052539.1562538.6062538.0572537.5072536.9582536.4082535.8592535.3092534.762534.2222533.6722770.624NANANA1044.422NANANANANANANANANANANANANANANA1284.802NANANA1286.125NANANANANANA
us-gaap:LongTermDebtNoncurrent ▄▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇█▁▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▃▁▁1642.8332291.4182290.9322290.4472539.7052539.1562538.6062538.0572537.5072536.9582536.4082535.8592535.3092534.762534.2222533.6722770.624745.1891044.8341044.6281050.01050.01050.01050.01300.01300.01300.01300.01300.4771300.5231300.6151300.7991300.9791308.6561308.8291309.0121059.1661059.2761059.491059.6481284.79806.447785.222NA785.444NANA
us-gaap:DeferredFinanceCostsNoncurrentNet ▁▂▂▃▃▄▄▄▅▅▆▆▆▇▇██9.28310.89111.56912.24713.18213.92414.66615.40816.1516.89217.63418.37619.11919.86120.59121.33422.075NANANA5.578NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▂▂▂▂▂▄▄▄▄▄▄▄▁▂█386.647389.553376.414385.149388.579423.677443.857436.755438.179439.011435.461424.344352.581376.665539.043NA469.328NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent █▂▁▃▄▆█▅130.774119.071117.494121.727122.695126.994130.58125.684NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▅▂▁39.58536.18233.45932.079NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree █▅▂▁29.55326.01823.63422.423NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour █▄▂▁22.3118.97616.79815.766NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive 16.779NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive 30.01NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:StockholdersEquity ██▇▇▆▆▅▅▅▆▅▆▅▅▄▄▃▂▂▂▁▁▁▁▁▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▃3687.8473816.513597.963604.8043235.2023324.3093104.973050.7063002.7213179.4923027.2443345.9683016.5262893.9972553.0332565.8812302.7932178.2582025.7051987.4021842.6591950.1061924.5281848.6691932.4552047.6662203.3342271.9742192.8582244.0332147.9722196.0112201.4922130.2462080.6442154.4152139.1352196.6272102.6192114.4852302.649NANANANANANA
us-gaap:CommonStockValue 1417.343NANANA1102.689NANANA840.328NANANA618.464NANANA485.068NANANA409.682399.927394.728387.314329.248320.248309.915294.795251.753233.927225.372217.107186.332178.29173.127171.091148.255145.12144.842144.523135.401135.276135.254NA132.058NANA
us-gaap:AdditionalPaidInCapitalCommonStock ▃▂▂▁▆▅▄▄▇▆▅▅█▇▆▆▇▇▆▅▇▆▅▅▅▅▄▄▄▄▄▃▄▃▃▃▄▃▃▃▃▃▃98.85974.45151.60830.155171.521154.157134.041110.441227.928197.327166.837140.371245.211219.389192.191168.514223.924200.572178.668161.938205.26184.442165.653148.275157.183145.13133.173123.954134.939117.897110.003102.961109.822103.66698.31193.331107.019102.20196.67491.68195.73290.46287.219NA84.616NANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇█▇▇▇▇▆▆▆▆▅▅▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁7877.0157688.4257509.5447596.5147296.5097151.8386917.316939.246691.2366465.1216261.7566239.5355837.8275651.6565349.5395388.045170.835086.5844968.4374970.6474805.8674674.9754557.2454327.8074227.624122.3544027.4644109.0013998.8933871.6753787.0673795.5253717.7713631.7933557.0883558.8063482.0733403.4593327.1113323.8943255.2563184.483125.411NA3080.079NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▆▃▂▁▃▅▄▅▆▆▆▆▇▇▇▆▆▅▅▅▅▅▅▆▆▆▇▇▇▇▇▇▇▇▇▇█▇████30.888-12.968-97.407-115.95-153.38-94.814-36.835-60.651-39.1520.4123.8659.86116.34322.51720.43732.003-3.029-11.941-17.286-36.412-24.874-33.674-17.68-20.004-8.471-4.26317.5126.81828.42835.55240.28637.95138.12338.44846.16844.01536.66351.07639.22159.57358.80764.79549.293NA36.133NANA
us-gaap:TreasuryStockValue █▇▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁5736.2585336.6275253.5195251.1485182.1374978.9464976.364974.4494717.6194309.5434209.4483840.7873701.3193611.053609.6973609.043574.03573.333572.5063572.1463553.2763275.5643175.4182994.7232773.1252535.8032284.7282282.5942221.1552015.0182014.7561957.5331850.5561821.9511794.051712.8281634.8751505.2291505.2291505.1861242.5471002.0711002.064NA798.857NANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue NA25.81928.54729.055NA27.0329.00340.395NA30.76928.61246.172NA30.8426.57428.63NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNA25.81928.54729.055NA27.0329.00340.395NA30.76928.61246.172NA30.8426.57428.63NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▅▆▆▆▅▅▇▆▃▃▅▅▃▅▅▃▃▃▃▁▂▃▄455.925331.851260.672312.292356.934363.198294.45276.901397.145326.15181.582162.985303.296281.855124.643254.366280.129182.037144.133157.588168.69132.117121.954143.083202.63NANANANANANANANANANANANANANANA132.93198.726NANA136.465135.014NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▆▇▆▆▆▇▆▇▆▆▇▁▆▇▆▆▆█▆▇-48.551-37.422-11.3-39.942-48.918-104.807-53.534-78.139-72.624-76.374-15.855-70.785-45.715-83.765-78.8472.622-2144.874-73.438.561-100.606-73.397-111.49515.13-201.86288.063NANANANANANANANANANANANANANANA-109.638-127.975NANA-55.275-71.459NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂▂▁▂▂▂▁▂▂▂▂▂▂▁█▂▂▂▂▂▂▂▂-469.773-444.55632.2182.243-394.915-250.3-116.385-193.607-308.007-257.919-194.871-112.508-271.85-282.7691.912-311.4331886.136-104.562-106.044-97.028-272.409-210.096-174.5-209.719-230.61NANANANANANANANANANANANANANANA232.032-51.549NANA-74.6910.179NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▂▁██▂▄▅▄▄▃▃▃-59.971-149.564281.633276.14-89.0397.906124.4045.48615.786-7.62-29.877-20.368NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:IncreaseDecreaseInAccountsPayable ▅▃▇▇▅▄▆▆▆▅▅▅█▆▃▇▅▅▅▇▃▇▆▆▅▁▇▅█▆▄▆▆▅▆▇▄▆▆▅▆▆▆▆▅▆-7.717-37.11521.8720.358-11.642-13.78414.69813.35712.1972.034-1.626-0.32935.8558.126-26.3917.684-1.8120.087-2.02917.48-37.93418.0023.83715.5310.17-61.59729.307-1.32537.48312.178-22.132.91511.548-9.5446.74116.278-18.9294.52911.172-9.3292.2417.20911.3458.42-6.2288.253NA
us-gaap:IncreaseDecreaseInAccountsReceivable ▃▆▇▄▁▄▆▅▆▃█▅▆▅▆▄█▄▆▆▅▅▆▅▄▄▆▄▆▅▅▅▅▅▅▅▅▄▅▅▅▅▅▅▅▃-30.60223.28647.01-7.118-70.816-6.80531.3046.63633.816-24.64670.69715.05126.22115.24633.755-8.95564.911-16.27421.97422.94611.2392.10520.16319.255-1.725-9.57920.969-8.22222.20710.2698.85214.9031.30216.87417.47.12812.501-9.0910.70810.14216.1425.0714.02713.7475.563-23.628NA
us-gaap:IncreaseDecreaseInInventories ▁▄▆█▇▄▄▄▃▅▅▆▄▄▃▄▂▄▄▄▃▄▄▄▃▄▃▄▃▄▄▄▃▄▃▃▂▃▄▅▅▅▅▄▄▄-48.177-1.27147.00577.94456.9934.37811.6761.726-10.67717.48918.59834.6297.334-1.416-8.4225.827-22.6968.7481.59913.017-6.0924.16811.7328.109-8.415-0.523-13.47-1.377-5.0686.8983.9745.258-6.5611.023-5.571-9.889-24.628-12.318.49830.7717.20422.78224.03914.7991.6072.974NA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▆▅▆▆▆▅▅▇▆▃▃▅▅▃▅▅▃▃▃▃▁▂▃▄455.925331.851260.672312.292356.934363.198294.45276.901397.145326.15181.582162.985303.296281.855124.643254.366280.129182.037144.133157.588168.69132.117121.954143.083202.63NANANANANANANANANANANANANANANA132.93198.726NANA136.465135.014NA
us-gaap:NetIncomeLoss ▆▆▇▇▃▅▆▆▅▅▆▅▄▇▃▅▂▃▃▃▃▂█▂▂▂▃▂▃▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁267.722258.384284.857300.005144.585234.52246.12250.812226.119203.334243.013212.515186.171302.095137.109217.21184.235118.005140.377138.091130.898117.341345.1100.181105.21594.883120.412110.108127.22484.60284.86277.75485.97774.70578.02776.73378.61476.03574.3568.63870.77659.0755.86661.277NANANA
us-gaap:ShareBasedCompensation ▅▅▅▅▄▅▅▇▆▆▅█▅▆▅▅▅▄▄▄▄▃▃▄▂▂▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁28.61425.81928.54729.05519.00727.0329.00340.39533.65730.76928.61246.17226.79130.8426.57428.6325.2923.99618.80320.77922.12416.92816.32423.91710.98611.23112.50512.287.6277.6247.646.9846.655.5765.6365.4485.2895.2675.2344.5225.394.0142.7533.0464.0263.752NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▆▇▆▆▆▇▆▇▆▆▇▁▆▇▆▆▆█▆▇-48.551-37.422-11.3-39.942-48.918-104.807-53.534-78.139-72.624-76.374-15.855-70.785-45.715-83.765-78.8472.622-2144.874-73.438.561-100.606-73.397-111.49515.13-201.86288.063NANANANANANANANANANANANANANANA-109.638-127.975NANA-55.275-71.459NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▃▁▁▃▅▅▆▆▆▇▅▇▅▆▅▄▅▇▇▆█▅▅▄▄▃▆▂▂▂▂▃▄▄▃▃▂▂▃▃▄▃▄▂▁43.0642.75126.78330.87640.9163.21261.42464.74368.91470.19173.08664.52875.65963.57469.94962.51754.69663.44876.59378.5867.88385.68559.18662.63154.6850.01544.97568.0531.96536.8339.32337.46244.68752.73751.62447.43843.08637.88435.41144.42140.29454.16439.93448.232.1530.836NA
us-gaap:PaymentsToAcquireInvestments ▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▁▁▃▃▃▂▅▃▂▁▁▁▁▁▂▂▂▂▂▁█▃▃▂▁▁▁▁▁-3.5740.6682.2654.94-0.430.340.739.3910.2973.47314.0710.0-3.8257.65141.85558.02255.4317.364-1.459119.729109.35113.45575.321196.02115.52467.9694.9976.9812.5237.92222.47232.94143.06655.34443.08436.979.251382.87786.382107.14555.13310.7026.0566.41611.4516.759NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▂▂▁▂▂▂▁▂▂▂▂▂▂▁█▂▂▂▂▂▂▂▂-469.773-444.55632.2182.243-394.915-250.3-116.385-193.607-308.007-257.919-194.871-112.508-271.85-282.7691.912-311.4331886.136-104.562-106.044-97.028-272.409-210.096-174.5-209.719-230.61NANANANANANANANANANANANANANANA232.032-51.549NANA-74.6910.179NA
us-gaap:PaymentsOfDividendsCommonStock 79.509NANANA-0.086NANANA0.004NANANA0.0NANA175.589-0.011NANA142.4440.0NANANA-0.05NANANA0.006NANANA0.0NANANA0.0NANA0.00.0NANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock █▂▁▂▄▁▁▅█▃▇▃▃▁▁▂▁▁▁▁▆▃▄▅▅▅▁▂▅▁▂▃▁▁▂▂▃▁▁▆▅▁▂▃▁▁399.63183.1082.37169.011203.1912.5861.911256.83408.076100.095368.661139.46890.2691.3530.65735.040.670.8240.3618.87277.712100.146180.695221.598237.322251.0752.13461.439206.1370.26257.223106.97728.60527.90181.22277.953129.6460.00.043262.639240.4760.00771.871131.3360.0090.001NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value14171102840618485409399394387329320309294251233225217186178173171148145144144135135135132
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.214.411.38.97.110.09.58.99.47.97.56.66.55.65.35.25.04.34.24.14.13.63.43.43.53.13.43.43.3

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-312009-05-312008-05-31
Value1891881881881861861861851841841841841821821821821801791781761740.173746173173173173
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Shares
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-312009-05-312008-05-31
Value858383838382828281797977767575757575665952-0.047226-35.762-20.338-20.296-19.392
Percentage of SharesIssued45.044.444.344.444.644.344.344.444.143.142.941.941.841.641.641.741.842.037.333.630.0-27.2-20.6-11.7-11.7-11.2

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-312015-02-282014-11-302014-08-312014-02-282013-11-302013-08-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-282010-11-302010-08-31
Value107107107107107107108109110110109108107107107109110112117118118121121122123124126129129131145145152
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value105104104103104103103105105106106106106106105105105104104106107108110113116117116119119119122122123124126128129129131143145145152
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-312015-02-282014-11-302014-08-312014-02-282013-11-302013-08-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-282010-11-302010-08-31
Value100000.0200000.0200000.0200000.0200000.0200000.0700000.0400000.0300000.01000000.0500000.0600000.0300000.0700000.0700000.0300000.0300000.0500000.0400000.0500000.0600000.0400000.0500000.0600000.0600000.0400000.0800000.01100000.03300000.02500000.03500000.03500000.05000000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value2.532.442.692.861.382.232.352.42.131.912.251.961.712.791.262.020.781.11.321.291.221.073.110.890.910.811.020.941.040.70.710.630.690.60.630.610.60.580.570.520.490.410.380.40.360.320.37
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value2.462.372.622.781.352.162.272.322.061.852.181.891.662.711.231.960.761.071.291.261.211.053.060.880.90.81.00.931.030.690.70.630.690.60.630.60.60.580.570.520.490.410.380.40.360.320.37
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value2.532.442.692.861.382.232.352.42.131.892.251.961.742.731.271.50.761.111.161.291.091.071.050.940.880.80.870.941.050.70.70.63
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value2.462.372.622.781.352.162.272.322.061.832.181.891.682.661.241.450.751.081.131.261.081.051.030.930.860.790.860.931.040.690.690.63
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value31134230333786176269227186199237206179304125252931231591261391013478810173111108120798777856680846487536964746664
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.019.317.319.35.39.814.612.610.411.913.812.110.819.17.815.76.19.612.39.811.08.328.57.48.86.69.99.810.47.17.66.97.66.27.68.06.18.75.36.86.48.07.17.0

Cost Of Revenue

us-gaap:CostOfRevenue us-gaap:ProductOrService

us-gaap:CostOfRevenue

ctas:OtherProductsAndServices


Cost
Period End2021-02-282020-11-302020-02-292019-11-30
Value205197201206
Percentage of CostOfRevenue100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.611.211.111.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:OtherProductsAndServices57.356.955.555.2

ctas:OtherProductsandServices


Cost
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value204195201206193199178181176179170166165
Percentage of CostOfRevenue0.00.0100.0100.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.111.111.210.711.110.610.610.410.710.710.310.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:OtherProductsandServices58.20.055.555.254.20.055.055.654.70.056.055.755.1

ctas:UniformRentalAndFacilityServices


Cost
Period End2021-02-282020-11-302020-02-292019-11-30
Value761739784784
Percentage of CostOfRevenue370.4374.9389.9380.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.942.143.442.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:UniformRentalAndFacilityServices53.752.554.253.4

ctas:UniformRentalandFacilityServices


Cost
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value715716784784768771748761746737718723706
Percentage of CostOfRevenue0.00.0389.9380.30.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.044.243.442.642.443.044.544.344.044.245.245.143.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:UniformRentalandFacilityServices51.30.054.253.452.80.055.154.754.30.055.955.353.9

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations

us-gaap:IncomeLossFromContinuingOperations


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value2672582841442342462502262002422121892951371618211812313811811711510610193103109128848477
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.014.516.28.913.013.413.812.611.914.112.511.318.68.610.05.49.39.510.79.39.69.58.98.98.49.210.011.17.57.46.9

us-gaap:IncomeLossFromContinuingOperations us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2020-08-312019-08-31
Value0.3580.295
Percentage of IncomeLossFromContinuingOperations0.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.0

us-gaap:IncomeLossFromContinuingOperations us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-30
Value0.3580.3580.3590.4220.3580.3580.2950.2950.2950.2940.2950.2950.2940.172
Percentage of IncomeLossFromContinuingOperations0.10.10.10.30.20.10.10.10.10.10.10.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value331302328325181289308278288251320241241174206219123181189192187177184169159157165175213133136123137116122122123120115111116969088897294
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.017.018.718.611.216.016.715.416.115.018.714.214.411.012.813.68.114.114.614.914.714.615.114.114.014.214.715.918.511.811.911.012.210.911.611.711.711.911.311.011.610.39.79.60.08.510.6

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-24.453-24.465-24.339-24.486-25.756-25.596-25.894-27.159-25.511-26.744-23.808-24.458-25.517-28.838-30.02-45.259-13.685-13.236-14.107-15.445-15.828-16.06-16.293-11.272-16.158-15.915.209
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-7.4-8.1-7.4-7.5-14.2-8.9-8.4-9.7-8.8-10.614.0-9.9-10.1-14.6-14.0-13.7-36.5-7.6-7.0-7.3-8.2-8.9-8.7-9.6-7.1-10.3-9.63.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-1.4-1.4-1.4-1.6-1.4-1.4-1.5-1.4-1.62.6-1.4-1.5-1.6-1.8-1.9-3.0-1.1-1.0-1.1-1.2-1.3-1.3-1.4-1.0-1.5-1.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ctas:FirstAidAndSafetyServices


Income
Period End2021-02-282020-11-302020-02-292019-11-30
Value25212424
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments8.56.58.58.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.21.41.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:FirstAidAndSafetyServices13.011.114.514.5

us-gaap:OperatingSegments, ctas:FirstAidandSafetyServices


Income
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value18322424242521212121161719141214111312148.5921211119.147
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments5.718.08.58.08.98.78.66.79.18.89.68.78.911.56.87.86.07.27.18.15.18.17.27.15.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.12.01.41.31.41.41.31.21.31.31.11.11.20.91.01.10.91.11.01.20.71.11.01.00.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:FirstAidandSafetyServices9.10.014.514.514.40.014.513.914.30.012.212.913.80.09.811.89.20.010.612.38.60.014.214.311.4

us-gaap:OperatingSegments, ctas:UniformRentalAndFacilityServices


Income
Period End2021-02-282020-11-302020-02-292019-11-30
Value283315271286
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments93.896.194.092.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.918.015.015.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:UniformRentalAndFacilityServices20.022.418.819.5

us-gaap:OperatingSegments, ctas:UniformRentalandFacilityServices


Income
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value315177271286269263239242231221173203218141172177185170167169165149152159144
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments96.997.794.092.896.491.195.175.895.991.999.398.899.9114.695.393.596.191.194.691.997.793.596.696.682.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.011.015.015.514.914.714.214.113.613.310.912.713.69.313.513.714.313.413.813.913.813.113.714.213.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:UniformRentalandFacilityServices22.60.018.819.518.50.017.617.516.80.013.515.616.70.017.417.618.50.017.918.117.60.017.217.916.6

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value29171516-2.9151823122617111122101310129.9171010181216111510109.525
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments8.85.74.85.0-1.66.37.64.49.07.03.64.99.45.76.54.910.45.55.75.310.07.28.86.89.66.46.25.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.00.90.9-0.21.01.30.71.51.00.70.71.40.60.80.70.80.80.80.81.51.11.31.01.30.90.90.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments0.010.710.410.90.09.511.56.70.010.06.66.90.06.08.46.80.06.16.46.00.08.010.17.20.07.06.86.4

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value64434325375462286250772851-121.282685746626654695968635657616586495145514244464444414246373427342336
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.02.52.51.42.33.03.41.63.53.04.51.73.1-7.64.33.63.14.95.14.25.54.95.65.35.05.15.55.97.54.44.54.14.63.94.24.44.24.44.04.24.64.03.73.00.02.84.2

us-gaap:IncomeTaxExpenseBenefit us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2020-08-312019-08-31
Value0.1160.179
Percentage of IncomeTaxExpenseBenefit0.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-30
Value0.1160.1160.1150.0520.1160.1160.1790.1790.1790.180.1790.1790.180.106
Percentage of IncomeTaxExpenseBenefit0.20.30.30.10.20.20.60.30.40.20.60.3-0.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value2424242425252627252624242425293045131314151616161616151616161616161616161817171712121212121112
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.01.41.41.41.61.41.41.51.41.61.41.41.51.61.81.93.01.11.01.11.21.31.31.41.41.51.41.51.41.51.41.51.51.51.51.61.71.71.71.71.31.31.31.30.01.31.4

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

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-30
Value0.4740.4740.4740.4740.4740.4740.4740.4740.4740.4740.4740.4740.4740.4740.278
Percentage of InterestExpense1.91.91.91.91.81.81.81.71.81.81.92.01.91.81.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value2672582843001442342462502262032432121863021372178411814013813011734510010594120110127848477857478767876746870595561
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.014.516.217.28.913.013.313.812.612.114.112.511.219.08.513.55.59.210.810.710.39.628.38.49.28.610.710.011.07.57.46.97.66.97.47.37.57.57.36.77.06.36.06.6

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value258284300234246250203243212302137217
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.516.217.213.013.313.812.114.112.519.08.513.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value35632635234920731433430631427827526526520023524916919420220620219220018517717318116312315015214015313313913914013713212812810810210010184106
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.018.420.120.012.817.418.116.917.516.516.015.615.912.614.615.511.115.215.616.016.015.916.415.515.615.716.114.810.713.313.412.513.612.413.113.213.413.613.012.612.711.610.910.90.09.712.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value18351777175717461619181018431811179316821718169716691589160616111530128112961294127112161219119811421108112311021157113011431120112910751060105110531012101910171012937936923909861884
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, ctas:FirstAidAndSafetyServices


Revenue
Period End2021-02-282020-11-302020-02-292019-11-30
Value198194170169
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.19.49.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.19.49.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:FirstAidAndSafetyServices100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:FirstAidandSafetyServices


Revenue
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value2041961701691721631491531531471371391401341241241241221191209984798279
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.19.49.29.59.18.98.99.08.88.68.78.78.89.79.69.69.79.89.98.37.47.27.37.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.19.49.29.59.18.98.99.08.88.68.78.78.89.79.69.69.79.89.98.37.47.27.37.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:FirstAidandSafetyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:UniformRentalAndFacilityServices


Revenue
Period End2021-02-282020-11-302020-02-292019-11-30
Value1417141014481469
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.880.380.079.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.880.380.079.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:UniformRentalAndFacilityServices100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:UniformRentalandFacilityServices


Revenue
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value139412701448146914541428135813901374134212841308131112039931005999965936937938891883891873
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.878.580.079.780.379.680.780.981.080.480.881.481.478.777.577.577.275.977.076.978.378.079.779.479.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.878.580.079.780.379.680.780.981.080.480.881.481.478.777.577.577.275.977.076.978.378.079.779.479.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments ctas:UniformRentalandFacilityServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value181160152147152192204184201174174169179167159159112163166169183160160160166145149148
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.99.08.78.59.410.611.110.211.310.410.110.010.710.59.99.97.412.812.813.114.413.213.213.414.613.213.313.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.99.08.78.59.410.611.110.211.310.410.110.010.710.59.99.97.412.812.813.114.413.213.213.414.613.213.313.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

ctas:FireProtectionServices


Revenue
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value1101041089810710611011199969894878086
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.26.06.26.15.95.86.16.25.95.65.85.75.55.05.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.26.06.26.15.95.86.16.25.95.65.85.75.55.05.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:FireProtectionServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:FirstAidAndSafetyServices


Revenue
Period End2021-02-282020-11-302020-02-292019-11-30
Value198194170169
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.19.49.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.211.19.49.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:FirstAidAndSafetyServices100.0100.0100.0100.0

ctas:FirstAidandSafetyServices


Revenue
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value204196170169172163149153153147137139140
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.19.49.29.59.18.98.99.08.88.68.78.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.19.49.29.59.18.98.99.08.88.68.78.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:FirstAidandSafetyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:OtherProductsAndServices


Revenue
Period End2021-02-282020-11-302020-02-292019-11-30
Value359346362373
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.219.720.020.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.219.720.020.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:OtherProductsAndServices100.0100.0100.0100.0

ctas:OtherProductsandServices


Revenue
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value352348362373356365324327323326304298299
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.221.520.020.319.720.419.319.119.019.619.218.618.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.221.520.020.319.720.419.319.119.019.619.218.618.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:OtherProductsandServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:UniformDirectSales


Revenue
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value504739538497749075777184797872
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.72.33.34.75.34.15.04.54.54.25.05.04.94.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.72.33.34.75.34.15.04.54.54.25.05.04.94.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:UniformDirectSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:UniformRentalAndFacilityServices


Revenue
Period End2021-02-282020-11-302020-02-292019-11-30
Value1417141014481469
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.880.380.079.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.880.380.079.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:UniformRentalAndFacilityServices100.0100.0100.0100.0

ctas:UniformRentalandFacilityServices


Revenue
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value1394127014481469145414281358139013741342128413081311
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.878.580.079.780.379.680.780.981.080.480.881.481.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.878.580.079.780.379.680.780.981.080.480.881.481.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax ctas:UniformRentalandFacilityServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value18351777175717461619181018431811179316821718169716691589160616111530128112961294127112161219119811421108112311021157113011431120112910751060105110531012101910171012937936923909861884
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value502483467476500509517542508476491504471490468486425362365374350331327338308301300314323328323325313308293306303288297310304283288293286275259
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.427.226.627.330.928.228.130.028.328.328.629.728.330.929.130.227.828.328.228.927.627.326.828.227.027.226.728.528.029.128.329.127.828.727.629.228.828.529.230.530.130.230.831.831.532.029.3

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-31
Value823683478454804376697901788776617436743374057287695869286978685168444271421441674104423144504122419242664697455644624400436543114345422142174152416042534215412743513972392838903969
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312013-05-31
Value493553703421145234226101968088118138186258213230147143163209386672511776752118910791023963
Percentage of Assets6.06.68.35.21.93.02.91.31.31.11.21.62.02.73.73.13.43.43.43.95.19.115.112.418.517.625.323.722.922.2
Percentage of Assets6.06.68.35.21.93.02.91.31.31.11.21.62.02.73.73.13.43.43.43.95.19.115.112.418.517.625.323.722.922.2
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, ctas:FirstAidAndSafetyServices


Assetsus-gaap:
Period End2021-02-282020-11-302020-02-292019-11-30
Value653657552537
Percentage of Assets7.87.87.06.8
Percentage of Assets7.87.87.06.8
Percentage of Assets us-gaap:OperatingSegments ctas:FirstAidAndSafetyServices100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:FirstAidandSafetyServices


Assetsus-gaap:
Period End2021-05-312020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value637620611552537536504508495486471472467456444452443436421436426398255264263260257
Percentage of Assets7.77.78.07.06.87.06.86.86.76.76.86.86.76.76.510.610.510.510.310.39.69.76.16.25.65.75.8
Percentage of Assets7.77.78.07.06.87.06.86.86.76.76.86.86.76.76.510.610.510.510.310.39.69.76.16.25.65.75.8
Percentage of Assets us-gaap:OperatingSegments ctas:FirstAidandSafetyServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:UniformRentalAndFacilityServices


Assetsus-gaap:
Period End2021-02-282020-11-302020-02-292019-11-30
Value6783673266956699
Percentage of Assets81.379.684.784.9
Percentage of Assets81.379.684.784.9
Percentage of Assets us-gaap:OperatingSegments ctas:UniformRentalAndFacilityServices100.0100.0100.0100.0

us-gaap:OperatingSegments, ctas:UniformRentalandFacilityServices


Assetsus-gaap:
Period End2021-05-312020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value674366286531669566996607644264516438629859775900589958445801328532663199311430502995287028452908290728612840
Percentage of Assets81.982.485.284.784.986.286.686.886.986.485.985.284.585.384.876.977.576.875.972.167.369.667.968.261.962.863.7
Percentage of Assets81.982.485.284.784.986.286.686.886.986.485.985.284.585.384.876.977.576.875.972.167.369.667.968.261.962.863.7
Percentage of Assets us-gaap:OperatingSegments ctas:UniformRentalandFacilityServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Assetsus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value362356361373381420423416392392383383371368353337367385361366358357355342345340336354340
Percentage of Assets4.44.34.34.65.05.35.45.45.35.35.25.35.35.35.14.95.49.08.68.88.78.58.08.38.28.07.27.87.6
Percentage of Assets4.44.34.34.65.05.35.45.45.35.35.25.35.35.35.14.95.49.08.68.88.78.58.08.38.28.07.27.87.6
Percentage of Assets us-gaap:OperatingSegments us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value82368347845480437669790178877661743674337405728769586928697868516844427142144167410442314450412241924266469745564462440043654311434542214217415241604253421541274351397239283969
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value36873816359736043235332431043050300231793027334530162893255325652302217820251987184219501924184819322047220322712192224421472196220121302080215421392196210221142302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.845.742.644.842.242.139.439.840.442.840.945.943.441.836.637.433.651.048.147.744.946.143.244.846.148.046.949.949.151.049.250.950.750.549.351.951.451.649.951.252.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ctas:AccumulatedOtherAdjustment


Stockholders
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-14.319-14.319-14.319-14.319-5.824-5.824-5.824-5.741-0.656-0.656-0.656-0.656-1.685-1.685-1.665-1.685-1.57-1.57-1.571-1.57
Percentage of StockholdersEquity-0.4-0.4-0.4-0.4-0.2-0.2-0.2-0.2-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets ctas:AccumulatedOtherAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ctas:AccumulatedOtherAdjustmentAttributabletoParent


Stockholders
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-31
Value-3.643-14.319-5.741-0.656-1.685-1.57-0.832-0.4821.15
Percentage of StockholdersEquity-0.1-0.4-0.2-0.0-0.1-0.1-0.0-0.00.1
Percentage of Assets-0.0-0.2-0.1-0.0-0.0-0.0-0.0-0.00.0
Percentage of Assets ctas:AccumulatedOtherAdjustmentAttributabletoParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value-7.308-11.159-86.651-102.234-112.718-78.066-24.126-46.529-18.3893.135116.9861010111111-20.83
Percentage of StockholdersEquity-0.2-0.3-2.4-2.8-3.5-2.3-0.8-1.5-0.60.10.40.20.30.40.40.40.5-1.1
Percentage of Assets-0.1-0.1-1.0-1.3-1.5-1.0-0.3-0.6-0.20.00.20.10.20.20.20.20.2-0.5
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value30-12.968-97.407-115.95-153.38-94.814-36.835-60.651-39.1520.4123.8659.86116222032-3.029-11.941-17.286-36.412-24.874-8.471283836
Percentage of StockholdersEquity0.8-0.3-2.7-3.2-4.7-2.9-1.2-2.0-1.30.00.10.30.50.80.81.2-0.1-0.5-0.9-1.8-1.3-0.41.31.71.7
Percentage of Assets0.4-0.2-1.2-1.4-2.0-1.2-0.5-0.8-0.50.00.10.10.20.30.30.5-0.0-0.3-0.4-0.9-0.6-0.20.60.90.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312015-05-312014-05-312013-05-31
Value41123.5630.603-26.343-10.924-6.885-8.298-15.022-2.067-7.0923.5316.55131122-12.726-7.609-10.009-2.359-2.4742.9874151
Percentage of StockholdersEquity1.10.30.10.0-0.8-0.3-0.2-0.3-0.5-0.1-0.20.10.20.50.40.9-0.6-0.3-0.5-0.1-0.10.21.92.3
Percentage of Assets0.50.10.00.0-0.3-0.1-0.1-0.1-0.2-0.0-0.10.00.10.20.20.3-0.2-0.2-0.2-0.1-0.10.10.91.2
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value98745130171154134110227197166140245219192168223205157134109107
Percentage of StockholdersEquity2.72.01.40.85.34.64.33.67.66.25.54.28.17.67.56.69.711.18.16.25.05.0
Percentage of Assets1.20.90.60.42.22.01.71.43.12.72.31.93.53.22.82.53.35.03.73.02.52.6
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value14171403138713451102109210661036840826804796618611600586485409329251186148
Percentage of StockholdersEquity38.436.838.637.334.132.934.434.028.026.026.623.820.521.123.522.921.122.217.011.58.56.9
Percentage of Assets17.216.816.416.714.413.813.513.511.311.110.910.98.98.88.68.67.110.07.95.64.33.6
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value7877768875097596729671516917693966916465626162395837565153495388517048054227399837173482
Percentage of StockholdersEquity213.6201.5208.7210.7225.5215.1222.8227.5222.8203.3206.8186.5193.5195.3209.5210.0224.5260.8218.8182.4168.9162.8
Percentage of Assets95.692.188.894.495.190.587.790.690.087.084.685.683.981.676.778.675.6117.1100.889.685.683.7
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value-5736.258-5336.627-5253.519-5251.148-5182.137-4978.946-4976.36-4974.449-4717.619-4309.543-4209.448-3840.787-3701.319-3611.05-3609.697-3609.04-3574.0-3553.276-2773.125-2221.155-1850.556-1634.875
Percentage of StockholdersEquity-155.5-139.8-146.0-145.7-160.2-149.8-160.3-163.1-157.1-135.5-139.1-114.8-122.7-124.8-141.4-140.7-155.2-192.8-143.5-101.3-84.1-76.4
Percentage of Assets-69.6-63.9-62.1-65.3-67.6-63.0-63.1-64.9-63.4-58.0-56.8-52.7-53.2-52.1-51.7-52.7-52.2-86.6-66.1-49.8-42.6-39.3
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value28432978310226662309249724902289223622232215210419771979204319241954162916001594159017582043173317351710214520121805166416181572162415091519152315411625159114821700132213541524
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.535.736.733.130.131.631.629.930.129.929.928.928.428.629.328.128.638.238.038.338.741.645.942.141.440.145.744.240.537.837.136.537.435.836.036.737.038.237.835.939.133.334.538.4

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-302009-05-312008-05-31
Value4935537034211452342261029680881181381522361911691471439913931560614641735882658151334830927835221724231933921720715043818426029041140634212966
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.68.35.21.93.02.91.31.31.11.21.62.02.23.42.82.53.43.42.43.47.413.63.69.98.417.612.811.57.97.16.58.15.25.77.78.25.14.93.610.14.76.67.510.40.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312017-05-312016-05-31
Value493553703421145234226102968088118138169139
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.68.35.21.93.02.91.31.31.11.21.62.02.53.4

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value901929910866870942949917910878904838804779763731736598607586563550549531496497510489508529520511496495479459450439447439429416402366
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.911.110.810.811.311.912.012.012.211.812.211.511.611.210.910.710.814.014.414.113.713.012.312.911.811.710.910.711.412.011.911.911.411.711.411.110.810.310.610.69.910.510.29.2

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value481533534488408352348336334339321303280274272283278272263262249255251240226234235249251256249245240246236241251275287280249232208169
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.86.46.36.15.34.54.44.44.54.64.34.24.04.03.94.14.16.46.26.36.16.05.75.85.45.55.05.55.65.85.75.75.55.95.65.86.06.56.86.85.75.85.34.3

Other Assets Current

us-gaap:OtherAssetsCurrent ctas:OtherAssets

us-gaap:OtherAssetsCurrent

ctas:CapitalizedContractCost


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value797978777674747169
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.90.91.01.00.90.90.90.9
Percentage of Assets ctas:CapitalizedContractCost0.00.00.00.00.00.00.00.00.0

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value1331261251331141251231371031081061123235384230514140262627312422232726262631242425302429282923
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.51.51.71.51.61.61.81.41.51.41.50.50.50.50.60.41.21.01.00.60.60.60.80.60.50.50.60.60.60.60.70.60.60.60.70.60.70.70.70.5

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value33733313319230462839241321942143234221632042
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.043.242.943.841.558.852.348.053.952.046.9

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value698682684644624509501521512492484
Percentage of PropertyPlantAndEquipmentGross20.720.621.421.122.021.122.924.321.922.823.7
Percentage of Assets8.58.99.29.39.112.412.011.711.811.811.1
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value3654671197917310442586297
Percentage of PropertyPlantAndEquipmentGross1.11.62.13.92.87.24.82.02.52.94.8
Percentage of Assets0.40.70.91.71.24.22.50.91.31.52.2
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Equipment


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value24092347220720701930158414461427163114781334
Percentage of PropertyPlantAndEquipmentGross71.470.869.167.968.065.665.966.669.668.365.4
Percentage of Assets29.330.629.729.728.238.634.532.037.535.530.7
Percentage of Assets us-gaap:Equipment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value190188189177173117116116112104103
Percentage of PropertyPlantAndEquipmentGross5.75.75.95.86.14.95.35.54.84.85.1
Percentage of Assets2.32.52.62.52.52.92.82.62.62.52.4
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value3840433432282635272521
Percentage of PropertyPlantAndEquipmentGross1.11.21.41.11.21.21.21.71.21.21.1
Percentage of Assets0.50.50.60.50.50.70.60.80.60.60.5
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value283273259253229
Percentage of PropertyPlantAndEquipmentGross8.48.28.18.38.1
Percentage of Assets3.43.63.53.63.3
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value20551910176116631516141913221287135512181096
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.024.923.723.922.234.631.628.931.229.325.2

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Accumulated
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value1541311108878
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment7.56.96.35.35.2
Percentage of Assets1.91.71.51.31.1
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-312015-02-282014-11-302014-08-312014-02-282013-11-302013-08-31
Value35353535353535343433333315151514123.63.63.54.44.23.63.43.53.55.15.35.1
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value13181329134413781403143414251422143014241410139413821367135313401323109010671033994964916896871853845838855981988991986976967953944944938946946941923894
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.015.915.917.118.318.218.118.619.219.219.019.119.919.719.419.619.325.525.324.824.222.820.621.820.820.018.018.419.222.322.723.022.723.122.923.022.722.222.322.921.723.723.522.5

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value29132895288928862870287328522849284228472845285028462819281128102782130313011298129112841273127211951194118911891267153215321531151715191522148914851486148314881487149114351356
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.434.734.235.937.436.436.237.238.238.338.439.140.940.740.341.040.730.530.931.231.530.428.630.928.528.025.326.128.434.835.135.534.936.036.135.935.734.935.236.134.237.536.534.2

us-gaap:Goodwill us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Goodwillus-gaap:
Period End2021-02-282020-11-302020-05-31
Value247246243
Percentage of Goodwill8.58.58.5
Percentage of Assets3.02.93.2
Percentage of Assets ctas:FirstAidAndSafetyServices0.00.00.0

ctas:FirstAidandSafetyServices


Goodwillus-gaap:
Period End2021-05-312020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value248244243243243243243243243244244244244244243242242242241235233232154
Percentage of Goodwill8.58.58.58.58.68.68.68.68.68.68.68.78.78.78.718.618.718.718.718.418.418.313.0
Percentage of Assets3.03.03.23.13.13.23.33.33.33.43.53.53.53.63.65.75.85.85.95.65.35.63.7
Percentage of Assets ctas:FirstAidandSafetyServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ctas:UniformRentalAndFacilityServices


Goodwillus-gaap:
Period End2021-02-282020-11-302020-05-31
Value253325282513
Percentage of Goodwill87.587.587.6
Percentage of Assets30.429.932.8
Percentage of Assets ctas:UniformRentalAndFacilityServices0.00.00.0

ctas:UniformRentalandFacilityServices


Goodwillus-gaap:
Period End2021-05-312020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value254725272513251625002500249625012499250325052478247624742448958958958953951942943943
Percentage of Goodwill87.587.687.687.687.787.787.887.887.887.988.087.988.188.088.073.673.673.973.874.174.074.178.9
Percentage of Assets30.931.432.831.931.732.633.633.733.834.436.035.835.536.135.822.422.723.023.222.521.222.922.5
Percentage of Assets ctas:UniformRentalandFacilityServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Goodwillus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value1161141141131131131081051021021021029797919191101100969696969696
Percentage of Goodwill4.04.04.03.94.03.93.83.73.63.63.63.63.43.43.33.23.37.87.77.57.57.57.67.68.1
Percentage of Assets1.41.41.41.41.51.41.41.41.41.41.41.41.41.41.31.31.32.42.42.32.42.32.22.32.3
Percentage of Assets us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312011-05-312011-02-282010-11-302010-05-31
Value7194184304417604644694824945085215355455575655815868385848386707542444144558388939293907276102107104103
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.75.05.15.59.95.96.06.36.76.87.07.47.88.08.18.58.62.02.02.02.02.01.61.81.01.10.91.01.21.92.02.22.12.22.11.71.82.42.72.72.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ServiceAgreements


Finite
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value4084184304414514644694824945085215355455575655815868385848386707542444144558388939293907276818694102
Percentage of FiniteLivedIntangibleAssetsNet56.7100.0100.0100.059.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0
Percentage of Assets5.05.05.15.55.95.96.06.36.76.87.07.47.88.08.18.58.62.02.02.02.02.01.61.81.01.10.91.01.21.92.02.22.12.22.11.71.81.92.12.32.4
Percentage of Assets us-gaap:ServiceAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments

us-gaap:ServiceAgreements, ctas:FirstAidandSafetyServices


Finite
Period End2021-05-312020-05-312019-05-312018-05-31
Value18192327
Percentage of FiniteLivedIntangibleAssetsNet2.52.64.75.0
Percentage of Assets0.20.30.30.4
Percentage of Assets us-gaap:ServiceAgreements ctas:FirstAidandSafetyServices0.00.00.00.0

us-gaap:ServiceAgreements, ctas:UniformRentalandFacilityServices


Finite
Period End2021-05-312020-05-312019-05-312018-05-31
Value369407445492
Percentage of FiniteLivedIntangibleAssetsNet51.353.690.090.2
Percentage of Assets4.55.36.07.1
Percentage of Assets us-gaap:ServiceAgreements ctas:UniformRentalandFacilityServices0.00.00.00.0

us-gaap:ServiceAgreements, us-gaap:AllOtherSegments


Finite
Period End2021-05-312020-05-312019-05-312018-05-31
Value21242626
Percentage of FiniteLivedIntangibleAssetsNet2.93.25.34.8
Percentage of Assets0.30.30.40.4
Percentage of Assets us-gaap:ServiceAgreements us-gaap:AllOtherSegments0.00.00.00.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Finite
Period End2021-02-282020-11-302020-05-31
Value191919
Percentage of FiniteLivedIntangibleAssetsNet4.64.62.6
Percentage of Assets0.20.20.3
Percentage of Assets ctas:FirstAidAndSafetyServices0.00.00.0

ctas:FirstAidandSafetyServices


Finite
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value1819202122232425262727282930313131323334361.576
Percentage of FiniteLivedIntangibleAssetsNet4.32.64.54.64.74.74.84.94.95.05.05.15.15.137.137.436.938.538.448.647.93.7
Percentage of Assets0.20.30.30.30.30.30.30.30.40.40.40.40.40.40.70.80.80.80.80.80.90.0
Percentage of Assets ctas:FirstAidandSafetyServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ctas:UniformRentalAndFacilityServices


Finite
Period End2021-02-282020-11-302020-05-31
Value378389407
Percentage of FiniteLivedIntangibleAssetsNet90.490.353.6
Percentage of Assets4.54.65.3
Percentage of Assets ctas:UniformRentalAndFacilityServices0.00.00.0

ctas:UniformRentalandFacilityServices


Finite
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value39940741842243444545646747949250251152652922232321214.5315.5896.677
Percentage of FiniteLivedIntangibleAssetsNet90.553.690.189.989.990.089.889.689.590.290.190.590.590.326.626.928.225.324.96.57.415.7
Percentage of Assets5.05.35.35.45.76.06.16.36.67.17.27.37.77.70.50.50.60.50.50.10.10.2
Percentage of Assets ctas:UniformRentalandFacilityServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Finite
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value202122242525252627282926272525273030293031313334
Percentage of FiniteLivedIntangibleAssetsNet5.05.15.23.25.45.45.45.35.45.55.54.85.04.54.44.636.435.734.936.236.745.044.680.6
Percentage of Assets0.30.30.30.30.30.30.30.40.40.40.40.40.40.40.40.40.70.70.70.70.70.70.80.8
Percentage of Assets us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value168156154159159165169163
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.91.82.02.12.12.12.1

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value3103042802712602522602452402372282212925293031161915191820201718181819137136123124121118113112115114116114
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.63.33.43.43.23.33.23.23.23.13.00.40.40.40.40.50.40.50.40.50.40.50.50.40.40.40.40.43.13.12.92.92.92.82.72.72.72.72.82.6

us-gaap:OtherAssetsNoncurrent ctas:OtherAssets

ctas:CapitalizedContractCost


Other
Period End2021-05-312020-05-312019-05-31
Value227227205
Percentage of OtherAssetsNoncurrent73.287.185.7
Percentage of Assets2.83.02.8
Percentage of Assets ctas:CapitalizedContractCost0.00.00.0

ctas:OtherMiscellaneousAssets


Other
Period End2021-05-312020-05-312019-05-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value8131322723272930141713121619191616171717171817171717161616171718
Percentage of OtherAssetsNoncurrent26.111.913.693.793.795.595.495.390.490.090.964.691.492.291.491.791.293.492.789.612.913.514.214.414.114.914.514.714.415.315.416.1
Percentage of Assets1.00.40.40.40.30.40.40.40.30.40.30.30.40.40.50.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.4
Percentage of Assets ctas:OtherMiscellaneousAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncompeteAgreements


Other
Period End2021-05-312020-05-312019-05-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-05-31
Value2.2752.5731.7841.8331.6181.3251.4021.4991.5441.9241.3771.451.5671.61.8071.4491.5821.2221.3792.0444.1534.6745.2254.8935.1935.4015.1026.0827.15512
Percentage of OtherAssetsNoncurrent0.71.00.76.36.34.54.64.79.610.09.17.38.67.88.68.38.86.67.310.43.03.44.23.94.34.64.55.46.210.6
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.20.3
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-31
Value30428027126025226024524023722828729
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.33.43.43.23.33.23.23.23.13.90.4

us-gaap:OtherAssets ctas:OtherAssets

ctas:CapitalizedContractCost


Other
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value229232229227221216212205203199259
Percentage of OtherAssets75.482.784.787.187.682.986.585.785.587.490.4
Percentage of Assets2.72.72.93.02.82.72.82.82.72.73.6
Percentage of Assets ctas:CapitalizedContractCost0.00.00.00.00.00.00.00.00.00.00.0

ctas:OtherMiscellaneousAssets


Other
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-31
Value724539312842313232262527
Percentage of OtherAssets23.816.414.411.911.416.412.813.613.811.78.993.7
Percentage of Assets0.90.50.50.40.40.50.40.40.40.40.40.4
Percentage of Assets ctas:OtherMiscellaneousAssets0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncompeteAgreements


Other
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-31
Value2.3542.5472.5532.5732.431.751.7541.7841.7811.9262.0141.833
Percentage of OtherAssets0.80.90.91.01.00.70.70.70.70.80.76.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.00.00.00.00.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value230237274252230243254237226214211214215172162189177127127129114151134131109111171141150117103124121109118110941151111001101019271
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.83.23.13.03.13.23.13.02.92.92.93.12.52.32.82.63.03.03.12.83.63.03.22.62.63.73.13.42.72.42.92.82.62.82.72.32.72.62.42.52.62.31.8

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2020-08-312020-05-312019-08-312019-05-312017-08-312017-05-312016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312012-08-312012-05-312011-08-31
Value23279.2380.0250.0380.052236470.00.017545.969.0184.238230.07.930.014
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0
Percentage of Assets0.30.40.10.00.40.00.90.01.25.31.20.00.00.41.20.10.20.10.50.00.20.00.3

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value518514791406456430674395433425611380420412577402429321469313349319443294309281502292299259360235271238325213256224318225242220321244
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.36.29.45.16.05.48.55.25.85.78.35.26.06.08.35.96.37.511.17.58.57.510.07.27.46.610.76.46.75.98.35.56.35.67.75.16.25.37.65.55.65.68.26.2

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-05-31
Value79
Percentage of DividendsPayableCurrent100.0
Percentage of Assets1.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value1934127015081093885106612971122112799411146797759171154104411309437487108158581130959621579851636630552614515556500555384670648720618434391468383
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.515.217.813.611.513.516.414.715.213.415.19.311.213.216.515.216.522.117.817.119.920.325.423.314.813.618.114.014.112.614.112.012.811.913.29.316.115.217.115.010.09.911.99.7

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value8992492492490.01991993383122171730.01873003073622502502502500.00.00.00.00.5030.6330.7148.28.1870.6740.6610.6362252252252261.3351.6311.8170.609
Percentage of LongTermDebtCurrent100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.93.03.03.10.02.52.54.44.22.92.30.02.74.34.55.36.15.95.66.10.00.00.00.00.00.00.00.20.20.00.00.05.45.35.45.50.00.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value4343424343444443
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.50.60.60.60.6

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value1291311121111211129494817994
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.71.51.61.82.72.32.11.91.92.2

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value26143260334833453549351134853488330632593263326231653117327132403410114814401468144614221395131416381639164216481639160316021599158715901582161313501407139213941615110710641052
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.739.139.641.646.344.444.245.544.543.944.144.845.545.046.947.349.826.934.235.235.233.631.331.939.138.435.036.236.736.436.737.136.537.737.538.932.533.133.033.837.127.927.126.5

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312012-05-312011-05-31
Value16422291229022902539253925382538253725362536253525352534253425332770104412841286
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.927.527.128.533.132.132.233.134.134.134.334.836.436.636.337.040.525.430.929.6

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

ctas:NotesDueThrough2037, us-gaap:UnsecuredDebt


Long
Period End2021-05-312020-05-312019-05-312018-05-31
Value2550255028662550
Percentage of LongTermDebt155.2100.4113.0100.6
Percentage of Assets31.033.238.536.6
Percentage of Assets ctas:NotesDueThrough2037 us-gaap:UnsecuredDebt0.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value1642229122902290253925392538253825372536253625352535253425342533277074510441044105010501050105013001300130013001300130013001300130013081308130910591059105910591284806785785
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.927.527.128.533.132.132.233.134.134.134.334.836.436.636.337.040.517.424.825.125.624.823.625.531.030.527.728.529.129.629.830.229.931.031.031.525.524.925.125.729.520.320.019.8

Deferred Finance Costs Noncurrent Net

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredFinanceCostsNoncurrentNet


Deferred
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value9.283101112131314151616171819192021225.578
Percentage of DeferredFinanceCostsNoncurrentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.20.20.20.20.20.20.20.20.30.30.30.30.30.30.1

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-05-31
Value386389376385388423443436438439435424352376539469
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.74.74.54.85.15.45.65.75.95.95.95.85.15.47.76.9

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value130119117121122126130125
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.41.41.51.61.61.71.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value39363332
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.50.40.40.4

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value29262322
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.40.30.30.3

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value22181615
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.30.20.20.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-05-31
Value16
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-05-31
Value30
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.4

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value174162160165165171174168
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.01.92.12.22.22.22.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value185173171177
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets2.32.12.02.2

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value11101111
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.10.10.10.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value36873816359736043235332431043050300231793027334530162893255325652302217820251987184219501924184819322047220322712192224421472196220121302080215421392196210221142302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.845.742.644.842.242.139.439.840.442.840.945.943.441.836.637.433.651.048.147.744.946.143.244.846.148.046.949.949.151.049.250.950.750.549.351.951.451.649.951.252.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ctas:AccumulatedOtherAdjustment


Stockholders
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-14.319-14.319-14.319-14.319-5.824-5.824-5.824-5.741-0.656-0.656-0.656-0.656-1.685-1.685-1.665-1.685-1.57-1.57-1.571-1.57
Percentage of StockholdersEquity-0.4-0.4-0.4-0.4-0.2-0.2-0.2-0.2-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets ctas:AccumulatedOtherAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ctas:AccumulatedOtherAdjustmentAttributabletoParent


Stockholders
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-31
Value-3.643-14.319-5.741-0.656-1.685-1.57-0.832-0.4821.15
Percentage of StockholdersEquity-0.1-0.4-0.2-0.0-0.1-0.1-0.0-0.00.1
Percentage of Assets-0.0-0.2-0.1-0.0-0.0-0.0-0.0-0.00.0
Percentage of Assets ctas:AccumulatedOtherAdjustmentAttributabletoParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value-7.308-11.159-86.651-102.234-112.718-78.066-24.126-46.529-18.3893.135116.9861010111111-20.83
Percentage of StockholdersEquity-0.2-0.3-2.4-2.8-3.5-2.3-0.8-1.5-0.60.10.40.20.30.40.40.40.5-1.1
Percentage of Assets-0.1-0.1-1.0-1.3-1.5-1.0-0.3-0.6-0.20.00.20.10.20.20.20.20.2-0.5
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value30-12.968-97.407-115.95-153.38-94.814-36.835-60.651-39.1520.4123.8659.86116222032-3.029-11.941-17.286-36.412-24.874-8.471283836
Percentage of StockholdersEquity0.8-0.3-2.7-3.2-4.7-2.9-1.2-2.0-1.30.00.10.30.50.80.81.2-0.1-0.5-0.9-1.8-1.3-0.41.31.71.7
Percentage of Assets0.4-0.2-1.2-1.4-2.0-1.2-0.5-0.8-0.50.00.10.10.20.30.30.5-0.0-0.3-0.4-0.9-0.6-0.20.60.90.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312015-05-312014-05-312013-05-31
Value41123.5630.603-26.343-10.924-6.885-8.298-15.022-2.067-7.0923.5316.55131122-12.726-7.609-10.009-2.359-2.4742.9874151
Percentage of StockholdersEquity1.10.30.10.0-0.8-0.3-0.2-0.3-0.5-0.1-0.20.10.20.50.40.9-0.6-0.3-0.5-0.1-0.10.21.92.3
Percentage of Assets0.50.10.00.0-0.3-0.1-0.1-0.1-0.2-0.0-0.10.00.10.20.20.3-0.2-0.2-0.2-0.1-0.10.10.91.2
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value98745130171154134110227197166140245219192168223205157134109107
Percentage of StockholdersEquity2.72.01.40.85.34.64.33.67.66.25.54.28.17.67.56.69.711.18.16.25.05.0
Percentage of Assets1.20.90.60.42.22.01.71.43.12.72.31.93.53.22.82.53.35.03.73.02.52.6
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value14171403138713451102109210661036840826804796618611600586485409329251186148
Percentage of StockholdersEquity38.436.838.637.334.132.934.434.028.026.026.623.820.521.123.522.921.122.217.011.58.56.9
Percentage of Assets17.216.816.416.714.413.813.513.511.311.110.910.98.98.88.68.67.110.07.95.64.33.6
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value7877768875097596729671516917693966916465626162395837565153495388517048054227399837173482
Percentage of StockholdersEquity213.6201.5208.7210.7225.5215.1222.8227.5222.8203.3206.8186.5193.5195.3209.5210.0224.5260.8218.8182.4168.9162.8
Percentage of Assets95.692.188.894.495.190.587.790.690.087.084.685.683.981.676.778.675.6117.1100.889.685.683.7
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value-5736.258-5336.627-5253.519-5251.148-5182.137-4978.946-4976.36-4974.449-4717.619-4309.543-4209.448-3840.787-3701.319-3611.05-3609.697-3609.04-3574.0-3553.276-2773.125-2221.155-1850.556-1634.875
Percentage of StockholdersEquity-155.5-139.8-146.0-145.7-160.2-149.8-160.3-163.1-157.1-135.5-139.1-114.8-122.7-124.8-141.4-140.7-155.2-192.8-143.5-101.3-84.1-76.4
Percentage of Assets-69.6-63.9-62.1-65.3-67.6-63.0-63.1-64.9-63.4-58.0-56.8-52.7-53.2-52.1-51.7-52.7-52.2-86.6-66.1-49.8-42.6-39.3
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value14171102840618485409399394387329320309294251233225217186178173171148145144144135135135132
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.214.411.38.97.110.09.58.99.47.97.56.66.55.65.35.25.04.34.24.14.13.63.43.43.53.13.43.43.3

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value987451301711541341102271971661402452191921682232001781612051841651481571451331231341171101021091039893107102969195908784
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.20.90.60.42.22.01.71.43.12.72.31.93.53.22.82.53.34.74.23.95.04.43.73.63.73.42.82.73.02.72.52.42.52.52.32.22.62.42.32.22.22.32.22.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value78777688750975967296715169176939669164656261623958375651534953885170508649684970480546744557432742274122402741093998387137873795371736313557355834823403332733233255318431253080
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets95.692.188.894.495.190.587.790.690.087.084.685.683.981.676.778.675.6119.1117.9119.3117.1110.5102.4105.0100.896.685.790.289.688.086.888.085.686.084.385.783.780.078.980.574.880.279.677.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value30-12.968-97.407-115.95-153.38-94.814-36.835-60.651-39.1520.4123.8659.86116222032-3.029-11.941-17.286-36.412-24.874-33.674-17.68-20.004-8.471-4.263172628354037383846443651395958644936
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.4-0.2-1.2-1.4-2.0-1.2-0.5-0.8-0.50.00.10.10.20.30.30.5-0.0-0.3-0.4-0.9-0.6-0.8-0.4-0.5-0.2-0.10.40.60.60.80.90.90.90.91.11.10.91.20.91.41.41.61.30.9

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value5736533652535251518249784976497447174309420938403701361136093609357435733572357235533275317529942773253522842282222120152014195718501821179417121634150515051505124210021002798
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.663.962.165.367.663.063.164.963.458.056.852.753.252.151.752.752.283.784.885.786.677.471.372.666.159.448.650.149.845.846.245.442.643.242.541.339.335.435.736.528.625.225.520.1

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value252829272940302846302628
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value252829272940302846302628
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value4553312603123563632942763973261811623032811242542801821441571683212114320213298136135
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.818.714.817.922.020.116.015.322.119.410.69.618.217.77.815.818.314.211.112.213.32.610.011.917.713.110.515.015.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value-48.551-37.422-11.3-39.942-48.918-104.807-53.534-78.139-72.624-76.374-15.855-70.785-45.715-83.765-78.8472-2144.874-73.438.561-100.606-73.397-111.49515-201.86288-109.638-127.975-55.275-71.459
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-2.1-0.6-2.3-3.0-5.8-2.9-4.3-4.0-4.5-0.9-4.2-2.7-5.3-4.94.5-140.2-5.70.7-7.8-5.8-9.242.3-16.87.7-10.8-13.6-6.1-8.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value-469.773-444.556322.243-394.915-250.3-116.385-193.607-308.007-257.919-194.871-112.508-271.85-282.7691.912-311.4331886-104.562-106.044-97.028-272.409-210.096-174.5-209.719-230.61232-51.549-74.6910.179
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.6-25.01.80.1-24.4-13.8-6.3-10.7-17.2-15.3-11.3-6.6-16.3-17.80.1-19.3123.3-8.2-8.2-7.5-21.4-17.3-14.3-17.5-20.222.9-5.5-8.20.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value-59.971-149.564281276-89.0397.9061245.48615-7.62-29.877-20.368
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-8.416.015.8-5.50.46.70.30.9-0.5-1.7-1.2

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-7.717-37.1152120-11.642-13.7841413122.034-1.626-0.329358.126-26.3917-1.8120.087-2.02917-37.934183.837150.17-61.59729-1.3253712-22.132.91511-9.5446.74116-18.9294.52911-9.3292.2417.209118.42-6.2288.253
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-30.6022347-7.118-70.816-6.805316.63633-24.6467015261533-8.95564-16.2742122112.1052019-1.725-9.57920-8.22222108.852141.30216177.12812-9.091010165.0714135.563-23.628
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-48.177-1.2714777564.378111.726-10.6771718347.334-1.416-8.4225.827-22.6968.7481.59913-6.0924.168118.109-8.415-0.523-13.47-1.377-5.0686.8983.9745.258-6.5611-5.571-9.889-24.628-12.318.49830172224141.6072.974
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value4553312603123563632942763973261811623032811242542801821441571683212114320213298136135
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.818.714.817.922.020.116.015.322.119.410.69.618.217.77.815.818.314.211.112.213.32.610.011.917.713.110.515.015.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value2672582843001442342462502262032432121863021372178411814013813011734510010594120110127848477857478767876746870595561
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.614.516.217.28.913.013.313.812.612.114.112.511.219.08.513.55.59.210.810.710.39.628.38.49.28.610.710.011.07.57.46.97.66.97.47.37.57.57.36.77.06.36.06.6

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value258284300234246250203243212302137217
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.516.217.213.013.313.812.114.112.519.08.513.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value282528291927294033302846263026282523182022161623101112127.6277.6247.646.9846.655.5765.6365.4485.2895.2675.2344.5225.394.0142.7533.0464.0263.752
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value-48.551-37.422-11.3-39.942-48.918-104.807-53.534-78.139-72.624-76.374-15.855-70.785-45.715-83.765-78.8472-2144.874-73.438.561-100.606-73.397-111.49515-201.86288-109.638-127.975-55.275-71.459
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-2.1-0.6-2.3-3.0-5.8-2.9-4.3-4.0-4.5-0.9-4.2-2.7-5.3-4.94.5-140.2-5.70.7-7.8-5.8-9.242.3-16.87.7-10.8-13.6-6.1-8.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value43422630406361646870736475636962546376786785596254504468313639374452514743373544405439483230
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-3.5740.6682.2654.94-0.430.340.739.3910.2973.473140.0-3.82574158557.364-1.45911910911375196115674.9976.9812.5237.9222232435543369.2513828610755106.0566.4161116
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312011-05-312011-02-282010-05-312010-02-28
Value-469.773-444.556322.243-394.915-250.3-116.385-193.607-308.007-257.919-194.871-112.508-271.85-282.7691.912-311.4331886-104.562-106.044-97.028-272.409-210.096-174.5-209.719-230.61232-51.549-74.6910.179
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.6-25.01.80.1-24.4-13.8-6.3-10.7-17.2-15.3-11.3-6.6-16.3-17.80.1-19.3123.3-8.2-8.2-7.5-21.4-17.3-14.3-17.5-20.222.9-5.5-8.20.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-05-312020-05-312019-05-312018-05-312017-08-312017-05-312016-08-312016-05-312015-05-312014-05-312013-05-312012-05-312011-08-312011-05-31
Value79-0.0860.0040.0175-0.0111420.0-0.050.0060.00.00.00.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.00.0100.0100.0100.00.0100.0100.00.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value399832.371692032.5861.911256408100368139901.3530.657350.670.8240.36182771001802212372512.134612060.26257106282781771290.00.0432622400.007711310.0090.001
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value14.413.37.80.1890.2010.1010.2010.2420.12-0.6950.3330.2650.3440.3490.282
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-312009-05-31
Value191.11145.54123.896.7174.7761.8351.5943.1237.636.0436.1237.6338.91
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value386388438352469259339439377287214
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value318308198137196130103104898063
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value4235373644343438483128283618181317161513134410395
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value2.0376.4117.3081118171413129.0540.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

ctas:FiniteLivedIntangibleAssetsAmortization

ctas:FiniteLivedIntangibleAssetsAmortization


Finite
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-31
Value1414141414141414141413141312103.2339.684-3.1993.174.0934.0913.0383.1154.32.1113.6954.6615.3075.5085.3195.2124.2645.1956.033
Percentage of FiniteLivedIntangibleAssetsAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsAmortization us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Finite
Period End2021-02-28
Value0.943
Percentage of FiniteLivedIntangibleAssetsAmortization6.6

ctas:FirstAidandSafetyServices


Finite
Period End2020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-31
Value0.9470.970.970.970.9770.950.9630.9630.9320.9830.9690.9580.9372.809-0.9360.990.9850.439
Percentage of FiniteLivedIntangibleAssetsAmortization6.66.86.96.96.96.86.96.96.87.07.07.729.029.029.324.224.114.5

ctas:UniformRentalAndFacilityServices


Finite
Period End2021-02-28
Value12
Percentage of FiniteLivedIntangibleAssetsAmortization85.0

ctas:UniformRentalandFacilityServices


Finite
Period End2020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-31
Value1211111111111111111111100.7892.445-0.7981.4771.0581.088
Percentage of FiniteLivedIntangibleAssetsAmortization84.383.983.383.483.483.683.683.684.283.884.482.924.425.224.936.125.935.8

us-gaap:AllOtherSegments


Finite
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-31
Value1.2081.2071.291.3131.3811.3781.3561.3581.3461.3341.2481.2941.1851.1791.5074.43-1.4651.6262.0481.511
Percentage of FiniteLivedIntangibleAssetsAmortization8.48.49.09.29.89.89.69.79.69.59.19.28.69.546.645.745.839.750.149.7

ctas:IncreaseDecreaseInUniformsAndOtherRentalItemsInService

ctas:IncreaseDecreaseInUniformsAndOtherRentalItemsInService


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value293.35519-16.552-46.5050.988211117143423201020138.679-4.2622.4431.872-0.599-3.9885.9544.9399.791-1.27167.1127.293-8.5528.5444.15150.698198.67219101811197.794151510-8.728
Percentage of IncreaseDecreaseInUniformsAndOtherRentalItemsInService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities

ctas:NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value26625628229714323224424822519823920918829013515776116121135116115113104999210210921883-8.399778574-1.7097677753.509687058-15.9461
Percentage of NetIncomeLossAvailableToCommonStockholdersBasicAfterAdjustmentOfUndistributedEarningsAllocatedToParticipatingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsNetOfTax

ctas:OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsNetOfTax


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-31
Value-400000.0-400000.0-400000.0-400000.0-400000.0-300000.0
Percentage of OtherComprehensiveIncomeLossAmortizationOfInterestRateLockAgreementsNetOfTax100.0100.0100.0100.0100.0100.0

ctas:ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAverageCost

ctas:ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAverageCost


Share
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-30
Value1.03332.73333.6-0.59278.21259.17
Percentage of ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAverageCost100.0100.0100.0100.0100.0100.0

ctas:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted

ctas:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted


Undistributed
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-31
Value1894000.02015000.02173000.02193000.02425000.02016000.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasicAndDiluted100.0100.0100.0100.0100.0100.0

ctas:UnrecordedUnconditionalPurchaseObligationAdditions

ctas:UnrecordedUnconditionalPurchaseObligationAdditions


Unrecorded
Period End2021-02-282020-11-302020-08-31
Value3.7159.8
Percentage of UnrecordedUnconditionalPurchaseObligationAdditions100.0100.0100.0

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentForAmortization


Adjustment
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value36363535353635353434343316161614133.7613.9713.4893.4524.3724.1613.6033.3683.3883.4964.2065.1185.85.95.8235.8295.95.96.18.8149.4169.87110101010101010
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-30
Value1.91.22.40.42.50.3
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value212020202019191818181717
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark

us-gaap:ConcentrationRiskPercentage1

us-gaap:SalesRevenueNet


Concentration
Period End2021-02-282020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value100.01.01.01.01.01.01.0
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:StatementBusinessSegments

us-gaap:SalesRevenueNet, ctas:UniformDirectSales


Concentration
Period End2020-08-312019-08-312018-08-31
Value5.00.050.05
Percentage of ConcentrationRiskPercentage10.05.05.0

us-gaap:SalesRevenueNet, ctas:UniformRentalandFacilityServicesFirstAidandSafetyServicesandFireProtectionServices


Concentration
Period End2020-08-312019-08-312018-08-31
Value95.00.950.95
Percentage of ConcentrationRiskPercentage10.095.095.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark

ctas:FireProtectionServices, us-gaap:SalesRevenueNet


Concentration
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value6.26.06.20.0590.0580.0610.0590.0560.058
Percentage of ConcentrationRiskPercentage16.20.00.05.95.86.15.95.65.8

ctas:FirstAidAndSafetyServices, us-gaap:SalesRevenueNet


Concentration
Period End2021-02-282020-11-302020-02-292019-11-30
Value11.211.09.49.2
Percentage of ConcentrationRiskPercentage111.20.0940.0920.0

ctas:FirstAidandSafetyServices, us-gaap:SalesRevenueNet


Concentration
Period End2020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value11.70.0940.0920.0950.0890.0890.09
Percentage of ConcentrationRiskPercentage10.09.49.29.58.98.99.0

ctas:UniformDirectSales, us-gaap:SalesRevenueNet


Concentration
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value2.82.72.30.0470.0530.0410.0450.0450.042
Percentage of ConcentrationRiskPercentage12.80.00.04.75.34.14.54.54.2

ctas:UniformRentalAndFacilityServices, us-gaap:SalesRevenueNet


Concentration
Period End2021-02-282020-11-302020-02-292019-11-30
Value79.880.380.079.7
Percentage of ConcentrationRiskPercentage179.80.08000.07970.0

ctas:UniformRentalandFacilityServices, us-gaap:SalesRevenueNet


Concentration
Period End2020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value79.80.80.7970.8030.8070.810.81
Percentage of ConcentrationRiskPercentage10.080.079.780.380.781.081.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses


Defined
Period End2021-05-312021-02-282020-11-302020-08-312018-05-312018-02-282017-11-30
Value-55000.0-56000.0-55000.0-56000.0000
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.00.00.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


Defined
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value731000.0731000.0731000.0731000.0740000.0740000.0741000.0740000.0721000.0720000.0720000.0721000.0684000.0716000.0716000.0716000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value513000.0512000.0513000.0512000.0720000.0720000.0721000.0720000.0781000.0781000.0781000.0781000.0686000.0711000.0711000.0711000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value-163000.0-163000.0-163000.0-163000.0-20000.0-20000.0-20000.0-20000.060000.061000.061000.060000.02000.0-5000.0-5000.0-5000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value61616060605958565957545258495453514039393937363635343535404242424241404040383838383737373837
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-02-282020-11-302020-02-292019-11-302019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value79371-0.008268-0.031220-0.001-0.0221750.001
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-02-282020-11-302020-02-292019-11-302019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value79371-0.008268-0.031220-0.001-0.0221750.001
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value2428000.0563000.043000.01547000.0-2140000.0-185000.0-127000.0331000.0-728000.0523000.0-733000.0-60000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss


Finite
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-31
Value1196000.0381000.03242000.0-521000.0159000.01055000.0-1775000.0620000.0-1382000.0-510000.0-943000.0527000.0-2812000.06659000.0-29000.035000.0-73000.0-2000.0
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Finite
Period End2021-02-28
Value45000.0
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss3.8

ctas:FirstAidandSafetyServices


Finite
Period End2020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value73000.0-11000.04000.025000.0-32000.04000.0-34000.0-13000.0-42000.032000.0-74000.0173000.024000.0-25000.0-2000.0
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss2.32.12.52.41.80.62.52.54.56.12.62.668.634.2100.0

ctas:UniformRentalAndFacilityServices


Finite
Period End2021-02-28
Value1151000.0
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss96.2

ctas:UniformRentalandFacilityServices


Finite
Period End2020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value3169000.0-510000.0155000.01030000.0-1743000.0616000.0-1348000.0-497000.0-901000.0495000.0-2738000.06486000.011000.0-48000.00
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss97.797.997.597.698.299.497.597.595.593.997.497.431.465.8-0.0

us-gaap:FinitelivedIntangibleAssetsAcquired1

us-gaap:FinitelivedIntangibleAssetsAcquired1


Finitelived
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value0.5753.2611.1389.6440.9161.4582.030.3221.0794.6333.0095.4080.5210.4555191.4014.0844.2780.49120-0.97350.7246.390.6312.3760.380.7530.4546.151
Percentage of FinitelivedIntangibleAssetsAcquired1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Finitelived
Period End2021-02-28
Value0.384
Percentage of FinitelivedIntangibleAssetsAcquired166.8

ctas:UniformRentalAndFacilityServices


Finitelived
Period End2021-02-28
Value0.0
Percentage of FinitelivedIntangibleAssetsAcquired10.0

ctas:UniformRentalandFacilityServices


Finitelived
Period End2020-08-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-31
Value1.1388.6190.00.01.8770.2480.7390.02.4631.6030.00.0320.0-0.0073.521180.00.0
Percentage of FinitelivedIntangibleAssetsAcquired1100.089.40.00.092.577.068.50.081.929.60.07.00.0-0.282.391.2-0.00.0

us-gaap:AllOtherSegments


Finitelived
Period End2021-02-282020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-31
Value0.1911.0250.9161.1330.1520.0750.3394.620.0013.7760.5210.0121.4012.4790.7571.790.00.94
Percentage of FinitelivedIntangibleAssetsAcquired133.210.6100.077.77.523.331.499.70.069.8100.02.6100.060.717.78.8-0.02.6

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GainLossOnSaleOfOtherAssets


Gain
Period End2021-02-28
Value3.898
Percentage of GainLossOnSaleOfOtherAssets100.0

us-gaap:GoodwillAcquiredDuringPeriod

us-gaap:GoodwillAcquiredDuringPeriod


Goodwill
Period End2020-08-312019-08-312018-08-312017-08-312016-08-312015-08-312014-08-312013-08-312012-08-312011-08-31
Value2.0013.1864.964246.823770.693132.2250.182
Percentage of GoodwillAcquiredDuringPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod us-gaap:StatementBusinessSegments

ctas:UniformRentalandFacilityServices


Goodwill
Period End2020-08-312019-08-312018-08-312017-08-312016-08-312015-08-31
Value2.0010.00.0245.7390.0
Percentage of GoodwillAcquiredDuringPeriod100.00.00.099.784.10.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-31
Value155.021.41214-7.193-2.1820.5863.986-6.6132.28-4.981-1.771.0240.213-1.4053.261.8940.405-0.963-0.041
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

ctas:FirstAidAndSafetyServices


Goodwill
Period End2021-02-28
Value0.373
Percentage of GoodwillForeignCurrencyTranslationGainLoss7.4

ctas:FirstAidandSafetyServices


Goodwill
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value1.041-0.534-0.1620.0430.296-0.4910.17-0.37-0.129-0.1950.101-0.6611.5520.195-0.484-0.027
Percentage of GoodwillForeignCurrencyTranslationGainLoss7.47.47.47.37.47.47.57.47.3-19.047.447.047.648.150.365.9

ctas:UniformRentalAndFacilityServices


Goodwill
Period End2021-02-28
Value4.623
Percentage of GoodwillForeignCurrencyTranslationGainLoss92.1

ctas:UniformRentalandFacilityServices


Goodwill
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value12-6.647-2.0140.5443.675-6.1032.109-4.602-1.6311.2220.105-0.7191.6460.204-0.467-0.015
Percentage of GoodwillForeignCurrencyTranslationGainLoss92.392.492.392.892.292.392.592.492.1119.349.351.250.550.448.536.6

us-gaap:AllOtherSegments


Goodwill
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-02-282016-11-302016-08-31
Value0.0490.024-0.0030.044-0.012-0.006-0.0010.015-0.0190.001-0.009-0.01-0.0030.007-0.0250.0620.006-0.0120.001
Percentage of GoodwillForeignCurrencyTranslationGainLoss0.30.5-0.20.30.20.3-0.20.40.30.00.20.6-0.33.31.81.91.51.2-2.4

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value000000000.0200-0.030.06-0.010.520.020.010.1700.1302.06-0.050.030.010.150-0.0100.010
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare0.00.00.00.00.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.00.0100.00.0

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-31
Value000000000.0200-0.020.05-0.010.510.010.010.1700.1302.03-0.050.040.010.140-0.0100.010
Percentage of IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare0.00.00.00.00.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.00.0100.00.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-5.378-22.92735-14.29746216.199-24.082271812-27.556311214-16.2185.578-1.21318-23.67641-19.34227-26.25331-22.939141049-6.36238-27.215670.782-9.064-27.4-29.698-16.97936-10.20138-30.59722-32.92636-13.739
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes

us-gaap:IncreaseDecreaseInDeferredIncomeTaxes


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-31
Value5.98313148.716212.6190.278-7.91-6.629-5.852-10.205-9.022-1.133162-17.224-24.938-7.374-0.3615.803-1.97-15.238-23.883104-5.632-5.438-5.082-8.238-2.108-38.3760.566-1.926-7.37315-8.554-45.529-9.716-57.722-10.7723.9597.808
Percentage of IncreaseDecreaseInDeferredIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value167333-10.067-21.6842429-58.718191735-56.186-7.18334-6.174-30.306191318-37.276171912-35.579101816-41.2628.7122115-34.777-12.4813613-50.7938.3741812-27.61112137.892-21.359.97910
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value35-1.038-79.975-3.674501.366-34.121635-6.66-29.885123.28914-61.38670-10.568-19.34-40.05840-54.235-184.016188485.734-20.174-40.40148-3.0574.784-19.172326.0895.34-29.1452914-24.239-27.86447-20.4681.521-24.17326
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value251915421526264115261146-2.399-0.6482.56216-35.5889.435-3.7035.655-0.615-0.789-3.6556.0241.593-1.013-3.2625.8840.2850.116-5.447.2163.29-0.211-5.195.392-4.4810.849-0.8555.983-2.778-2.108-6.39510-3.955-0.328
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-31
Value-81000.02732000.02982000.03019000.0-244000.03343000.03376000.03540000.0-21000.03082000.03399000.03813000.0173000.03617000.03478000.02797000.0153000.02799000.02690000.02631000.046000.01620000.01812000.01632000.082000.01689000.01540000.01371000.0107000.01367000.01143000.0762000.0157000.0637000.0424000.0348000.082000.0210000.013000.029000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value0.0980.0870.2180.0640.1960.3470.2830.1620.2710.070.3910.4960.370.3840.2910.2970.130.0110.0310.0650.3310.3350.1110.1190.1710.0960.0190.0530.0330.0440.0840.0680.0510.1320.1490.0770.8010.3730.4030.3650.7780.280.3940.5780.60.4220.314
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-31
Value171817181717
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent


Oci
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value841837-57.62124-23.179-3.158-5.702-6.1872.374-11.39435
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Oci
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value751510-53.58222-29.903-8.1834.921-3.1680.00.00.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent89.484.328.793.094.2129.0259.1-86.351.20.0-0.00.0

us-gaap:AccumulatedTranslationAdjustment


Oci
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value8.9472.9626-4.0391.4136.7245.025-10.623-3.0192.374-11.37435
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent10.615.771.37.05.8-29.0-159.1186.348.8100.099.899.9

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value1212121212131212
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302012-02-292011-11-302011-02-282010-11-30
Value8.9472.9626-4.0391.4136.7245.025-10.623-3.0192.374-11.37411-20.7641510
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-30
Value4.209751510-34.23-53.58222-29.903-21.229-8.1834.921-3.1680.00.00.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value1.411255.43.672-13.001-17.2947.346-9.844
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-30
Value358000.0358000.0359000.0358000.0422000.0358000.0358000.0295000.0295000.0295000.0294000.0295000.0295000.0294000.0172000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value-116000.0-116000.0-115000.0-116000.0874000.0-116000.0-116000.0-179000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value43841837-58.566-57.97923-23.474-39.564-3.453-5.996-6.482-6.1742.08-11.56635
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value751510-53.9422-30.198-8.4784.627-3.463-0.294-0.172-0.172
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent89.484.028.093.094.1128.6245.5-77.253.4-14.11.5-0.5

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-31
Value841837-57.97923-23.474-3.453-5.996-6.482
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value8.9472.9626-4.0391.4136.7245.025-10.623-3.0192.374-11.37435
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent10.616.072.07.05.9-28.6-145.5177.246.6114.198.3100.4

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-31
Value255.5153.788-17.1787.462-9.665
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value5.8122.4290.732.1422.568-0.0131.9940.1091.0035.0871.5150.2020.383-2.6160.5660.3040.2240.304-1.250.9180.296-2.446-1.066-0.9210.20.098-1.665-0.0164.351-0.0611.311-0.3820.677-0.0111.25-0.577-0.1583.9190.767-6.5392.353-4.0134.0962.7623.307-2.751
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value2.4680.6384.9481.9845.87412.6863.8962.410.823-1.0337.6137.048110.7970.30220821.8526.787104.84830-0.1971211.697100.6872.3280.4760.4510.298324.74511512.133.9826.331130.87136940479.06934
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-31
Value9.9081235728.97218253711215.1276.017.2811176.7565.8892.943165.9664.8165.6118.2749.4848.84913127.9757.226147.6514.7991.2381.1192.9850.2780.0780.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-0.541-2.149-0.818-0.869-0.7821.982-0.76-1.192-6.024-2.726-4.81-0.552-0.091-0.607-1.233-0.649-0.077-0.229-5.9570.385-0.6630.5070.5950.051-1.551.381-5.046.798-9.874.0162.1974.1261.5811.0911.015-3.491-0.835-0.0640.5280.926-5.539-0.769-0.4822.181-0.5830.323
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherProductiveAssets

us-gaap:ProceedsFromSaleOfOtherProductiveAssets


Proceeds
Period End2021-02-282020-02-29
Value9.0640.0
Percentage of ProceedsFromSaleOfOtherProductiveAssets100.00.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


Reclassification
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value358000.0359000.0358000.0358000.0358000.0295000.0295000.0294000.0295000.0294000.0172000.0172000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value358000.0359000.0358000.0358000.0358000.0295000.0295000.0294000.0295000.0294000.0172000.0172000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:RepaymentsOfSeniorDebt

ctas:SeniorNotes4.302022Maturity, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Repayments
Period End2021-06-01
Value250
Percentage of RepaymentsOfSeniorDebt100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-31
Value24126.4189.3177.3468.612176.828
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation


Shares
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-30
Value0100000.0100000.00100000.0100000.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation0.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value9000.021000.0568000.025000.021000.0605000.02000.011000.0739000.022000.018000.0656000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value304000.0424000.0795000.0309000.0324000.0557000.0404000.086000.0594000.0197000.0277000.0395000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value-2.976-7.094-170.421-6.914-5.403-157.882-0.279-2.146-151.012-3.642-2.897-84.04
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value2.9767.0941706.9145.4031570.2792.1461513.6422.89784
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value123572182537215.1277.281117
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value123572182537215.1277.281117
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:TreasuryStockAcquiredAverageCostPerShare

ctas:EmployeePayrollTaxesDueOnRestrictedStock


Treasury
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value300.01-0.59278.21259.17260.830.19195.14194.14204.390.780.710.2199.670.45-0.010.0985.540.26
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:ShareRepurchaseProgram

ctas:ShareBuybackProgramOctober2018


Treasury
Period End2021-02-28
Value319.88
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

ctas:ShareBuybackProgramOctober2019


Treasury
Period End2021-02-28
Value321.51
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

ctas:ShareBuybackPrograms


Treasury
Period End2021-02-282020-02-29
Value320.30
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

ctas:ShareBuybackPrograms, us-gaap:SubsequentEvent


Treasury
Period End2021-04-06
Value337.39
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Treasury
Period End2021-07-28
Value365.41
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0

us-gaap:TreasuryStockSharesAcquired us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

us-gaap:TreasuryStockSharesAcquired

ctas:EmployeePayrollTaxesDueOnRestrictedStock


Treasury
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292016-01-082015-11-302015-08-312015-05-31
Value0.20.00.10.10.20.00.10.10.30.00.00.00.00.00.20.00.00.00.00.20.0
Percentage of TreasuryStockSharesAcquired100.00.0100.0100.0100.00.0100.0100.0100.00.00.00.00.00.0100.00.00.00.00.0100.00.0

us-gaap:TreasuryStockSharesAcquired us-gaap:ShareRepurchaseProgram

ctas:ShareBuybackProgramOctober2018


Treasury
Period End2021-02-28
Value0.19
Percentage of TreasuryStockSharesAcquired0.0

ctas:ShareBuybackProgramOctober2019


Treasury
Period End2021-02-28
Value0.066
Percentage of TreasuryStockSharesAcquired0.0

ctas:ShareBuybackPrograms


Treasury
Period End2021-02-282020-02-29
Value0.2560.037
Percentage of TreasuryStockSharesAcquired0.037.0

us-gaap:TreasuryStockSharesAcquired us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

ctas:ShareBuybackPrograms, us-gaap:SubsequentEvent


Treasury
Period End2021-04-06
Value0.1
Percentage of TreasuryStockSharesAcquired0.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value0.260.0070.230.010.0071.0820.5981.9430.6890.0080.0050.272
Percentage of TreasuryStockSharesAcquired0.00.0115.010.07.0541.0598.01943.0229.70.00.00.0

us-gaap:TreasuryStockSharesAcquired us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Treasury
Period End2021-07-282020-01-092016-04-082015-10-09
Value1.60.00.52.1
Percentage of TreasuryStockSharesAcquired0.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312016-05-312016-02-292015-11-302015-08-042015-08-312015-05-312015-02-282012-07-30
Value832.371692.5861.9112561003681391.3530.657352979918012020225125023
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensation

ctas:EmployeePayrollTaxesDueOnRestrictedStock


Treasury
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-28
Value690.42.50.3631.30.10.4610.70.80.4151.40.10.3190.30.2
Percentage of TreasuryStockValueAcquiredCostMethod100.00.096.715.724.80.00.10.143.70.00.00.00.00.50.10.29.40.10.1

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:ShareRepurchaseProgram

ctas:ShareBuybackProgramOctober2018


Treasury
Period End2021-02-28
Value60
Percentage of TreasuryStockValueAcquiredCostMethod73.3

ctas:ShareBuybackProgramOctober2019


Treasury
Period End2021-02-28
Value21
Percentage of TreasuryStockValueAcquiredCostMethod25.4

ctas:ShareBuybackPrograms


Treasury
Period End2021-02-282020-02-29
Value810.009
Percentage of TreasuryStockValueAcquiredCostMethod98.60.3

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

ctas:ShareBuybackPrograms, us-gaap:SubsequentEvent


Treasury
Period End2021-04-06
Value8.0
Percentage of TreasuryStockValueAcquiredCostMethod0.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-02-282020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-31
Value832.371692.5861.9112561003681391.3530.65735
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Treasury
Period End2021-07-282016-04-082015-10-09
Value58147180
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.0

us-gaap:UnrecordedUnconditionalPurchaseObligationPurchases

us-gaap:UnrecordedUnconditionalPurchaseObligationPurchases


Unrecorded
Period End2021-02-282020-11-302020-08-31
Value-88.24462
Percentage of UnrecordedUnconditionalPurchaseObligationPurchases100.0100.0100.0

ctas:AccumulatedAmortizationOfOtherAssets

ctas:AccumulatedAmortizationOfOtherAssets


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value29827725523421319217114912910989705149474543444443504949484747474653807978777676747374727168
Percentage of AccumulatedAmortizationOfOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:AccumulatedAmortizationOfOtherAssets ctas:OtherAssets

ctas:CapitalizedContractCost


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value2312101891691481281098971523417
Percentage of AccumulatedAmortizationOfOtherAssets77.676.074.372.269.866.963.859.955.048.238.824.4

ctas:OtherMiscellaneousAssets


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value242423232322211917161412119.6147.8766.1944.4223.2012.9252.662.4429.0038.4857.9127.557.3316.9696.6066.2445.8725.4985.1194.7394.3593.9793.6523.2725.9055.5115.1084.69
Percentage of AccumulatedAmortizationOfOtherAssets8.28.99.310.010.811.712.312.913.714.816.318.522.119.516.613.610.17.26.66.14.818.117.316.315.815.414.814.211.77.36.96.56.15.75.24.94.57.97.67.26.8

us-gaap:NoncompeteAgreements


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-05-31
Value424241414141404040404040393939393941414140404040404040394774747372727271696963
Percentage of AccumulatedAmortizationOfOtherAssets14.215.216.417.819.421.423.927.231.336.944.957.177.980.583.486.489.992.893.493.981.181.982.783.784.284.685.285.888.392.793.193.593.994.394.895.195.592.193.2

ctas:DeferredTaxAssetsOperatingLeaseLiabilities

ctas:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2021-05-312020-05-312019-05-31
Value44420.0
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.00.0

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsuranceAndContingencies

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsuranceAndContingencies


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value4545453654423836332819
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInsuranceAndContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventoryObsolescence

ctas:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventoryObsolescence


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value30139.2578.66816131211121111
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventoryObsolescence100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:DeferredTaxAssetsTreasuryLocks

ctas:DeferredTaxAssetsTreasuryLocks


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value3.14395.8060.00.0125.8296.9248.029.032
Percentage of DeferredTaxAssetsTreasuryLocks100.0100.0100.00.00.0100.0100.0100.0100.0100.0

ctas:DeferredTaxLiabilitiesDeferredExpenseCapitalizedContractCosts

ctas:DeferredTaxLiabilitiesDeferredExpenseCapitalizedContractCosts


Deferred
Period End2021-05-312020-05-312019-05-312018-05-31
Value7977700.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedContractCosts100.0100.0100.00.0

ctas:DeferredTaxLiabilitiesInventory

ctas:DeferredTaxLiabilitiesInventory


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value2021891941432101721691501316410
Percentage of DeferredTaxLiabilitiesInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets

ctas:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets


Deferred
Period End2021-05-312020-05-312019-05-31
Value44420.0
Percentage of DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets100.0100.00.0

ctas:DeferredTaxLiabilitiesStateTaxesAndOther

ctas:DeferredTaxLiabilitiesStateTaxesAndOther


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value3.1142.0921.612443216242422117.682
Percentage of DeferredTaxLiabilitiesStateTaxesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:EmployeeRelatedLiabilitiesCurrentDefinedContributionPlansAndProfitSharing

ctas:EmployeeRelatedLiabilitiesCurrentDefinedContributionPlansAndProfitSharing


Employee
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value129134123112110756864595648
Percentage of EmployeeRelatedLiabilitiesCurrentDefinedContributionPlansAndProfitSharing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssets

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssets


Finite
Period End2021-02-282020-11-302020-08-31
Value731747754
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssets100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseAfterYearFour

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseAfterYearFour


Finite
Period End2021-02-282020-11-302020-08-31
Value257250240
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseAfterYearFour100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseRemainderOfFiscalYear

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-02-282020-11-302020-08-31
Value3569102
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearFour

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearFour


Finite
Period End2021-02-282020-11-302020-08-31
Value888682
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearFour100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearOne

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearOne


Finite
Period End2021-02-282020-11-302020-08-31
Value133130126
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearOne100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearThree

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearThree


Finite
Period End2021-02-282020-11-302020-08-31
Value1019995
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearThree100.0100.0100.0

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearTwo

ctas:FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearTwo


Finite
Period End2021-02-282020-11-302020-08-31
Value114111107
Percentage of FiniteLivedIntangibleAssetsNetAndOtherAssetsAmortizationExpenseYearTwo100.0100.0100.0

ctas:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

ctas:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour


Lessee
Period End2021-02-282020-11-302020-08-31
Value353029
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour100.0100.0100.0

ctas:LongTermDebtCurrentMaturitiesGross us-gaap:DebtInstrument, us-gaap:LongtermDebtType

ctas:LongTermDebtCurrentMaturitiesGross

ctas:SeniorNotes2.902022Maturity, us-gaap:SeniorNotes


Long
Period End2021-05-31
Value650
Percentage of LongTermDebtCurrentMaturitiesGross100.0

ctas:SeniorNotes4.302022Maturity, us-gaap:SeniorNotes


Long
Period End2021-05-31
Value250
Percentage of LongTermDebtCurrentMaturitiesGross38.5

ctas:OtherAssetsGross

ctas:OtherAssetsGross


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value6095815365054744454313953693473173578074767675606358706869696565656572218216202202198194188186190187187183
Percentage of OtherAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:OtherAssetsGross ctas:OtherAssets

ctas:CapitalizedContractCost


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-31
Value459440421399375349325301277255234276
Percentage of OtherAssetsGross75.475.778.778.979.378.675.376.474.973.773.877.5

ctas:OtherMiscellaneousAssets


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value10596696254516350504841383833353534172016152527272323242423232322222121201922232323
Percentage of OtherAssetsGross17.316.713.012.411.411.614.812.813.614.113.010.848.244.846.646.446.129.332.028.021.737.839.439.036.136.437.136.832.710.811.111.211.210.811.110.610.711.912.312.312.6

us-gaap:NoncompeteAgreements


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-05-31
Value444444444343424242424242414140404042434242424242414141414979797877777776767676
Percentage of OtherAssetsGross7.37.68.38.79.39.89.910.811.412.113.311.851.855.253.453.653.970.768.072.060.362.260.661.063.963.662.963.267.336.236.539.038.539.239.940.640.940.041.5

ctas:ServiceContractsFiniteLivedIntangibleAssetsNet

ctas:ServiceContractsFiniteLivedIntangibleAssetsNet


Service
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value4084184304414514644694824945085215355455575655815868385848386707542444144558388939293907276818694102
Percentage of ServiceContractsFiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ctas:UniformsAndOtherRentalItemsInService

ctas:UniformsAndOtherRentalItemsInService


Uniforms
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value810777772756770818817796784773758724702682674654635539543542539539542537534524528513506498508500496481482462452434422405393373364332
Percentage of UniformsAndOtherRentalItemsInService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-11-30
Value37301
Percentage of EntityPublicFloat100.0

us-gaap:AccountsPayableAndAccruedLiabilitiesNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesNoncurrent


Accounts
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value454460563547498421372387330283291301277205198185170136130168136131117116112107108105929392847672669787142138140134135134116
Percentage of AccountsPayableAndAccruedLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInsuranceCurrent

us-gaap:AccruedInsuranceCurrent


Accrued
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value156165165163153128113106968258
Percentage of AccruedInsuranceCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value126237332019151415171714
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value49355370342114523422610296808811813815223619116914714399139265556146417358826581513348309278352217242322339343329249499
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value40359.8346.4251.5460.0120.00.00.02.3070.00.0332221227.3463.26464701211155316440.00.00.04.844.1564.1895.71928337.5610.09.0198.0352726
Percentage of AssetsFairValueDisclosure8.26.51.41.51.10.05.40.00.00.02.60.00.022.19.611.313.15.02.365.150.545.920.836.33.912.50.00.00.01.41.31.51.613.014.02.30.02.62.411.25.2

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-05-31
Value534589713427146234238102968090118138186258213191154146163209386672200433403826513
Percentage of AssetsFairValueDisclosure108.2106.5101.4101.5101.1100.0105.4100.0100.0100.0102.6100.0100.0122.1109.6111.3113.1105.0102.3165.1150.5145.9120.8136.3103.9112.5100.0100.0

us-gaap:CapitalizedContractCostNetCurrent

us-gaap:CapitalizedContractCostNetCurrent


Capitalized
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value797978777674747169
Percentage of CapitalizedContractCostNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostNetNoncurrent

us-gaap:CapitalizedContractCostNetNoncurrent


Capitalized
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value227229232230227221216212206
Percentage of CapitalizedContractCostNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value49355370342114523422610296808811813815223619116914714399139265556146417358826581513348309278352217242319339217207150438
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-05-31
Value49355370342114523422610296808811813815223619116914714399139315606146417358826513
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0118.8109.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:CashSurrenderValueOfLifeInsurance


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value25223822721719219019618717017016516015415315114314412712012110810110810610196979286858372737067595758545451
Percentage of CashSurrenderValueOfLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockValueOutstanding

us-gaap:CommonStockValueOutstanding


Common
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value1403138713451102109210661036840826804796618611600586485476468463409
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DebtInstrumentCarryingAmount

ctas:SeniorNotes2.782023Maturity, us-gaap:SeniorNotes


Debt
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value505151515151515151515252525252520.0
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

ctas:SeniorNotes2.902022Maturity, us-gaap:SeniorNotes


Debt
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value6506506506506506506506506506506506506506506506500.0
Percentage of DebtInstrumentCarryingAmount1276.41273.71271.01268.31265.61262.91260.31257.61255.01252.41249.71247.11244.51242.01239.41236.80.0

ctas:SeniorNotes3.112025Maturity, us-gaap:SeniorNotes


Debt
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value515151515151515152525252525252520.0
Percentage of DebtInstrumentCarryingAmount100.9100.9100.8100.8100.7100.7100.6100.6100.5100.5100.4100.4100.3100.3100.2100.20.0

ctas:SeniorNotes3.252023Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value300300300300300300300300300300300300300300300300300250
Percentage of DebtInstrumentCarryingAmount0.0589.1587.9586.6585.4584.1582.9581.7580.5579.2578.0576.8575.6574.4573.2572.0570.80.0

ctas:SeniorNotes3.702027Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value100010001000100010001000100010001000100010001000100010001000100010000.0
Percentage of DebtInstrumentCarryingAmount0.01963.71959.61955.41951.21947.11943.01938.91934.81930.81926.71922.71918.71914.71910.71906.71902.80.0

ctas:SeniorNotes3732023Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312020-05-312019-05-31
Value505151
Percentage of DebtInstrumentCarryingAmount0.0100.0100.0

ctas:SeniorNotes3882025Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312020-05-312019-05-31
Value515151
Percentage of DebtInstrumentCarryingAmount0.0100.8100.6

us-gaap:DebtInstrumentFairValue

us-gaap:DebtInstrumentFairValue


Debt
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value28102829284028043028295431152998
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateEffectivePercentage

ctas:SeniorNotes3732023Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312020-05-31
Value2.780.0278
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0

ctas:SeniorNotes3882025Maturity, us-gaap:SeniorNotes


Debt
Period End2021-05-312020-05-31
Value3.110.0311
Percentage of DebtInstrumentInterestRateEffectivePercentage111.9111.9

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value25502550255025502750275028892866
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtWeightedAverageInterestRate

us-gaap:DebtWeightedAverageInterestRate


Debt
Period End2021-05-312020-05-312019-05-31
Value3.80.0380.037
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0

us-gaap:DeferredFinanceCostsCurrentNet

us-gaap:DeferredFinanceCostsCurrentNet


Deferred
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-31
Value930000.064000.0128000.0192000.00200000.0212000.0224000.0236000.000050000.0100000.00
Percentage of DeferredFinanceCostsCurrentNet100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.00.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-31
Value705697636490666390442439
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value3203142051482151471171181028963
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value3.8857.6579.109113717164.2665.3979.0540.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value7478775373452923171612
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value10149.4956.9557.7077.4164.8574.8355.3225.5775.63
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value107734831258.19.46130201815
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-31
Value207207210183290104848199
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value167177159115126937790123122118
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value2.830.02540.03540.03950.0379
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanBenefitObligation


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value991059186870.0
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanName

ctas:ImmaterialPensionPlan


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value8.99.47.97.47.57.7
Percentage of DefinedBenefitPlanBenefitObligation8.98.98.68.68.60.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2021-05-31
Value25
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2021-05-31
Value4100000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2021-05-31
Value4700000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2021-05-31
Value4500000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2021-05-31
Value4400000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2021-05-31
Value4200000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear


Defined
Period End2021-05-31
Value300000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value78686258590.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:CorporateDebtSecurities


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value2627211920
Percentage of DefinedBenefitPlanFairValueOfPlanAssets34.240.535.333.734.0

us-gaap:DefinedBenefitPlanCashAndCashEquivalents


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value0.5560.5851.3790.4870.629
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.70.92.20.81.1

us-gaap:DefinedBenefitPlanEquitySecuritiesNonUs


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value6.4514.5754.8474.6834.929
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.26.77.88.08.3

us-gaap:DefinedBenefitPlanEquitySecuritiesUs


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value3628272728
Percentage of DefinedBenefitPlanFairValueOfPlanAssets47.241.644.947.547.7

us-gaap:USGovernmentAgenciesDebtSecurities


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value7.5667.066.0875.8845.275
Percentage of DefinedBenefitPlanFairValueOfPlanAssets9.710.39.810.08.9

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

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value2627211920
Percentage of DefinedBenefitPlanFairValueOfPlanAssets34.240.535.333.734.0

us-gaap:DefinedBenefitPlanCashAndCashEquivalents, us-gaap:FairValueInputsLevel1


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value0.5560.5851.3790.4870.629
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.70.92.20.81.1

us-gaap:DefinedBenefitPlanEquitySecuritiesNonUs, us-gaap:FairValueInputsLevel1


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value6.4514.5754.8474.6834.929
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8.26.77.88.08.3

us-gaap:DefinedBenefitPlanEquitySecuritiesUs, us-gaap:FairValueInputsLevel1


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value3628272728
Percentage of DefinedBenefitPlanFairValueOfPlanAssets47.241.644.947.547.7

us-gaap:USGovernmentAgenciesDebtSecurities, us-gaap:FairValueInputsLevel1


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value3.0662.7332.1132.4261.874
Percentage of DefinedBenefitPlanFairValueOfPlanAssets3.94.03.44.13.2

us-gaap:USGovernmentAgenciesDebtSecurities, us-gaap:FairValueInputsLevel2


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value4.54.3273.9743.4583.401
Percentage of DefinedBenefitPlanFairValueOfPlanAssets5.86.36.45.95.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value4636363535
Percentage of DefinedBenefitPlanFairValueOfPlanAssets60.053.258.360.460.2

us-gaap:FairValueInputsLevel2


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value3131252323
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.046.841.739.639.8

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanName

ctas:ImmaterialPensionPlan


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value9.27.37.37.57.16.5
Percentage of DefinedBenefitPlanFairValueOfPlanAssets11.810.711.712.812.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanFundedStatusOfPlan


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value-21484000.0-37016000.0-29668000.0-27560000.0-27991000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

ctas:AbsoluteReturnStrategyFunds


Defined
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value11.30.1190.1330.1580.162
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanCashAndCashEquivalents


Defined
Period End2021-05-312020-05-312019-05-312018-05-31
Value0.50.0050.0220
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations4.44.216.50.0

us-gaap:DefinedBenefitPlanDebtSecurity


Defined
Period End2021-05-312020-05-312019-05-312018-05-31
Value44.10.5150.450.442
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations390.3432.8338.3279.7

us-gaap:DefinedBenefitPlanEquitySecuritiesLargeCap


Defined
Period End2021-05-312020-05-312019-05-312018-05-31
Value29.80.250.2640.265
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations263.7210.1198.5167.7

us-gaap:DefinedBenefitPlanEquitySecuritiesNonUs


Defined
Period End2021-05-312020-05-312019-05-312018-05-31
Value8.30.0670.0780.079
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations73.556.358.650.0

us-gaap:DefinedBenefitPlanEquitySecuritiesSmallCap


Defined
Period End2021-05-312020-05-312019-05-312018-05-31
Value6.00.0440.0530.056
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations53.137.039.835.4

us-gaap:DerivativeAssets us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssets

us-gaap:OtherAssets, ctas:InterestRateContract2020


Derivative
Period End2021-05-312020-05-31
Value401.546
Percentage of DerivativeAssets100.0100.0

us-gaap:DerivativeAssets us-gaap:DerivativeInstrumentRisk

ctas:TreasuryLockTranche2


Derivative
Period End2021-02-282020-11-302020-08-312020-05-31
Value359.86.41.5
Percentage of DerivativeAssets0.00.00.097.0

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

us-gaap:InterestRateLockCommitments, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-02-282020-11-302020-08-312020-05-312019-11-302018-11-30
Value359.8346.4251.546122.307
Percentage of DerivativeAssets0.00.00.0100.00.00.0

us-gaap:DerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:InterestRateLockCommitments, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-02-282020-11-302020-08-312020-05-312019-11-302018-11-30
Value359.8346.4251.546122.307
Percentage of DerivativeAssets0.00.00.0100.00.00.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-05-312020-05-31
Value401.546
Percentage of DerivativeAssets100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-05-312020-05-31
Value401.546
Percentage of DerivativeAssets100.0100.0

us-gaap:DerivativeLiabilities us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilities

ctas:AccruedLiabilitiesNoncurrent, ctas:InterestRateContract2019


Derivative
Period End2021-05-312020-05-31
Value61111
Percentage of DerivativeLiabilities100.0100.0

us-gaap:DerivativeLiabilities us-gaap:DerivativeInstrumentRisk

ctas:TreasuryLockTranche1


Derivative
Period End2021-02-282020-11-302020-08-312020-05-31
Value6299107111
Percentage of DerivativeLiabilities0.00.00.0100.0

ctas:TreasuryLockTranche2


Derivative
Period End2020-11-302020-08-312020-05-31
Value384853
Percentage of DerivativeLiabilities0.00.048.1

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

us-gaap:InterestRateLockCommitments, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-08-31
Value621381561651165876368.464.169
Percentage of DerivativeLiabilities0.00.00.0148.10.00.00.00.00.00.0

us-gaap:DerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:InterestRateLockCommitments, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-08-31
Value621381561651165876368.464.169
Percentage of DerivativeLiabilities0.00.00.0148.10.00.00.00.00.00.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-05-312020-05-312019-05-312018-08-31
Value61165364.169
Percentage of DerivativeLiabilities99.9148.10.00.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Derivative
Period End2021-05-312020-05-312019-05-312018-08-31
Value61165364.169
Percentage of DerivativeLiabilities99.9148.10.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-05-31
Value24122415011712714812499155136117841401451131191499585641018465538878604485805843789054409183645279675366
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-05-31
Value224
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value19232220191919181818161416201915151615141415151422515371292827272727313132303030
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiCost

us-gaap:EquitySecuritiesFvNiCost


Equity
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-31
Value3200000.03200000.03100000.03100000.03200000.03200000.03200000.03200000.03200000.01200000.05200000.05200000.0
Percentage of EquitySecuritiesFvNiCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialLiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FinancialLiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Financial
Period End2021-05-312020-05-312019-05-312016-08-312016-05-312016-02-29
Value6116536381922
Percentage of FinancialLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FinancialLiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Financial
Period End2021-05-312020-05-312019-05-312016-08-312016-05-312016-02-29
Value6116536381922
Percentage of FinancialLiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:ServiceAgreements


Finite
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value553536521506489476462448434420406393379365351338324321317314311307304300298295294291304342338333328323319313307301292285277
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2021-05-31
Value192
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-05-31
Value137
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2021-05-31
Value74
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-05-31
Value91
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-05-31
Value105
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-05-31
Value117
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:ServiceAgreements


Finite
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value961954951948941941932931928929928928924923917920911404403399395394374375340340335336360426426426420416409386384382379380379
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-05-312011-02-282010-11-302010-05-31
Value2257560.023240.07.47542366.8781921350.044201.2280.01.7120.00.00.00.9366.6330.00.00.00.09.10215200.022371233131315
Percentage of IncomeTaxesReceivable100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.00.0100.0100.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value2424242436262626262921
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryFinishedGoodsNetOfReserves


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value429485495442360311305294287288275254235230233246242241235231216218214203192205205219218225218212203210202210219243256239213
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value1515141818141516171814171718161617121113171818171614151617161517191920181918171916
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryValuationReserves

us-gaap:InventoryValuationReserves


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value111635248453433333232313137383738323030292930
Percentage of InventoryValuationReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value3732242629272725283232312725232017171617141718181714131314141415171613121313142118
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Investments

us-gaap:Investments


Investments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312013-05-31
Value274264252240214212218208192191183180175178175163164148140140124118126123329445456451458101
Percentage of Investments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value47444240
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-02-282020-11-302020-08-31
Value122436
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LettersOfCreditOutstandingAmount


Letters
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value120120120143110838285858582
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282012-02-292011-11-302011-08-312011-05-31
Value621381561651165876368.460.0310.5110.5480.869
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value621381561651165876368.46
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:LongTermDebtFairValue

ctas:NotesDueThrough2037, us-gaap:UnsecuredDebt


Long
Period End2021-05-312020-05-312019-05-312018-05-31
Value2788280429982582
Percentage of LongTermDebtFairValue100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2021-05-31
Value900
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2021-05-31
Value0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2021-05-31
Value50
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2021-05-31
Value0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree0.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2021-05-31
Value350
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value2.322.462.582.622.66
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0

us-gaap:OtherInvestments

us-gaap:OtherInvestments


Other
Period End2021-05-312020-05-312019-05-31
Value3100000.03100000.03200000.0
Percentage of OtherInvestments100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent


Pension
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value2137292728
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-31
Value313131303050433328
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:RestructuringReserve

us-gaap:EmployeeSeverance, ctas:RestructuringPlan2020


Restructuring
Period End2021-05-312020-05-31
Value0.010
Percentage of RestructuringReserve0.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value264.63199.73149.12122.1895.0975.9457.645.0435.9729.9328.2227.45
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-05-31
Value983
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-05-31
Value409
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1


Sharebased
Period End2021-05-312020-05-312019-05-312016-05-31
Value89.4266.5354.0734.32
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1100.0100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

ctas:Range1


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value75.9450.8745.7537.7434.0429.8728.4326.526.7126.97
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice184.976.584.60.00.087.00.00.00.00.0

ctas:Range2


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value137.5594.7284.7165.5551.6339.9138.5535.7236.2833.5
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1153.8142.4156.70.00.0116.30.00.00.00.0

ctas:Range3


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value230.79145.02128.42101.5771.1762.9650.3440.4539.6338.69
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1258.1218.0237.50.00.0183.40.00.00.00.0

ctas:Range4


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value277.3300137.390.68063.4544.9443.1142.65
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1310.10.00.00.00.00.00.00.00.00.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1


Sharebased
Period End2021-05-312020-05-312019-05-312016-05-31
Value191.11145.54123.861.83
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1100.0100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

ctas:Range1


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value83.2851.3949.339.2735.3831.2230.1627.1227.0126.22
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance143.635.339.80.00.050.50.00.00.00.0

ctas:Range2


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value143.398.7696.1876.0158.0942.3338.1934.8834.9433.99
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance175.067.977.70.00.068.50.00.00.00.0

ctas:Range3


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value228.36143.1141.26107.3385.5164.948.5738.5738.5937.49
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1119.598.3114.10.00.0105.00.00.00.00.0

ctas:Range4


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-31
Value327.37232.8213.39158.55116.2990.5474.555.3244.4342.51
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1171.3160.0172.40.00.0146.40.00.00.00.0

us-gaap:ShortTermBorrowings

us-gaap:ShortTermBorrowings


Short
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312018-05-312016-11-302016-08-312016-05-31
Value2490.01991993383120.066163250
Percentage of ShortTermBorrowings100.00.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ShortTermBorrowings us-gaap:ShortTermDebtType

us-gaap:SeniorNotes


Short
Period End2020-08-31
Value250
Percentage of ShortTermBorrowings100.1

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value4200000.03700000.02800000.01800000.0900000.01100000.0900000.0700000.01100000.02000000.09100000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-312014-05-312013-05-312012-05-312011-05-31
Value343537261212119.7109.018
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount


Unrecorded
Period End2021-02-282020-11-302020-08-312020-05-31
Value103564117
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312015-05-31
Value12623733201915
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:SharesIssued
us-gaap:StatementEquityComponents
(None,)
Shares Issuedus-gaap: Statement Equity Components
Cost Ratio
us-gaap:ProductOrService
(None,)
Cost  Ratious-gaap: Product Or Service
EBT Margin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
E B T  Margin us-gaap: Consolidation Items, us-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:CostOfRevenue
us-gaap:ProductOrService
(None,)
Cost Of Revenueus-gaap: Product Or Service
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Income Loss From Continuing Operations 
Before Income Taxes Minority Interest And Income Loss From Equity Method Investmentsus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:Assets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Assetsus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
('us-gaap:ServiceAgreements', None)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class, us-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:StatementBusinessSegments
(None,)
Finite Lived Intangible Assets Netus-gaap: Statement Business Segments
us-gaap:OtherAssetsNoncurrent
ctas:OtherAssets
(None,)
Other Assets Noncurrentctas: Other Assets
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components