ALGN


Line plots across dimensions of each concept
Tables

Table of contents



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

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:CostOfRevenue

us-gaap:GrossProfit
us-gaap:StatementBusinessSegments

us-gaap:OperatingExpenses

us-gaap:ResearchAndDevelopmentExpense

us-gaap:SellingGeneralAndAdministrativeExpense

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementBusinessSegments
us-gaap:Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetIncludingGoodwill
us-gaap:Range, us-gaap:IncomeTaxAuthority, us-gaap:StatementScenario, us-gaap:SubsequentEventType
us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensation

us-gaap:UnrecognizedTaxBenefits

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

algn:ImpairmentsOfEquityInvestments

algn:InterestIncomeAndOtherIncomeExpenseNet

algn:LesseeOperatingLeasesNoncashOperatingCosts
us-gaap:Range, us-gaap:AwardType
algn:PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod
us-gaap:AwardType
algn:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndReleasedInPeriodWeightedAverageGrantDateFairValue

algn:TaxWithholdingRelatedToVestingOfRestrictedStockUnits
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AssetImpairmentCharges

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:BalanceSheetLocation
us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:FinanceLeasePrincipalPayments

us-gaap:GainContingencyPatentsFoundInfringedUponNumber
us-gaap:SubsequentEventType

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges
us-gaap:StatementBusinessSegments

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InterestIncomeOperating

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:ProceedsFromCollectionOfNotesReceivable

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StandardProductWarrantyAccrualPayments

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

algn:AccruedExpenses

algn:AccruedFixedAssetsCurrent

algn:AllowanceForDoubtfulAccountsReceivableAndSalesReturnsCurrent

algn:FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

algn:FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:SubsequentEventType
algn:NumberOfClaimsAsserted

algn:PrepaidSoftwareAndMaintenance

algn:PropertyPlantAndEquipmentAndROUAssets
us-gaap:StatementGeographical

algn:TaxRelatedReceivables

dei:EntityCommonStockSharesOutstanding

us-gaap:AccruedIncomeTaxes

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedProfessionalFeesCurrentAndNoncurrent

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

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType, us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType, us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents
algn:ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAward
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
us-gaap:AwardType, us-gaap:PlanName

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssetNotionalAmount
us-gaap:Currency, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeInstrumentRisk

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InventoryFinishedGoodsNetOfReserves

us-gaap:InventoryRawMaterialsNetOfReserves

us-gaap:InventoryWorkInProcessNetOfReserves

us-gaap:NotesAndLoansReceivableGrossCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:NotesReceivableFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:OtherReceivablesNetCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

us-gaap:StandardProductWarrantyAccrual
us-gaap:PlanName
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:TaxesPayableCurrentAndNoncurrent

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.0NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▁▄█▄▄██787878798079798080NANANANANANANA
us-gaap:CommonStockSharesIssued ▅▅▅▇█▇▇██▅▄▂▁78787879807979808078777675NANANA
us-gaap:CommonStockSharesOutstanding ▅▅▅▇█▇▇██▅▄▂▁78787879807979808078777675NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 79NA798080NA81818180797877776967
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 78NA797979NA80808078767675756966
us-gaap:EarningsPerShareBasic █▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁19.321.541.291.840.91.22000000000000021.261.321.20.250.210.220.430.2-0.720.07
us-gaap:EarningsPerShareDiluted █▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁19.211.53000000000000021.281.830.891.211.241.31.170.240.20.220.420.19-0.720.07
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▇█▇▇▇▇▆▆▅▂▁▁▁▁▁▁55064960760054853450549043612510495108907976
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments algn:ClearAligner481NA516496469NA427433385114104NANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments algn:ScannersAndServices69NA9110379NA785751NANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical algn:OtherInternational▇██▇▅▅▅▄▆▁▁▁▁7584836752534741604111NANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:CH184NANANA0NANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▇███▇▇▇▇▆▁▁2713002862962792692632542379379NANANANANA
us-gaap:Revenues ▇█▇▇▇▇▆▆▅▂▁▁▁▁▁▁55064960760054853450549043612510495108907976
us-gaap:CostOfRevenue ▇███▇▇▆▆▅▂▁▁▁▁▁▁15617716916814615013312410933222121202018
us-gaap:GrossProfit ▇█▇▇▇▇▆▆▆▂▁▁▂▁▁▁39447143743240238337136532792827487695957
 us-gaap:GrossProfit us-gaap:StatementBusinessSegments algn:ClearAligner▇█▇▇▇▆▆▆▆▁▁3514033793663513303213312968982NANANANANA
 us-gaap:GrossProfit us-gaap:StatementBusinessSegments algn:ScannersAndServices▃█▆█▅▅▅▂▁426858665052503330NANANANANANANA
us-gaap:OperatingExpenses ███▆█▆▆▆▆▂▁▁▁▁▃▁324320310255314262246242229666153414911951
us-gaap:ResearchAndDevelopmentExpense ███▇▇▇▆▆▆▂▂▁▁▁▁▁4141393837353230298966655
us-gaap:SellingGeneralAndAdministrativeExpense 282NA277267247NA213212199NANANANANANANA
us-gaap:OperatingIncomeLoss ▅▇▇█▅▆▆▆▆▄▃▃▄▃▁▃6915112717687120125122982621214520-606
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:OperatingSegments180NANANA186NANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments algn:ClearAligner▂▆▅█▁▃▃▄▁166221211244158178182190161NANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments algn:ScannersAndServices▁▇▆█▅▆▆▂▂143732392833311716NANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆█▆▆▆▁▃▆█▆01000-2-1010NANANANANANA
 us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▆█▆▆▆▁▃▆█01000-2-101NANANANANANANA
us-gaap:NonoperatingIncomeExpense -18NA-213-5NA0-700000000
us-gaap:IncomeTaxExpenseBenefit ▁███████████████-14643425438222472655125-102
us-gaap:ComprehensiveIncomeNetOfTax █▁▁▂▁▁▁▁▁▁▁▁▁15181221021477295991069619161732NANANA
us-gaap:NetIncomeLoss █▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁15181211021477197100106951915163214-494
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings1518NA102147719710010695NANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:Assets █▅▅▅▅▄▄▄▄▁▁▁▁396425002350234622342052192819161782585496445408NANANA
us-gaap:Liabilities ██▇▇▇▆▅▅▅▁▁▁▁111111541044972978799735697655129948574NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▅▅▅▅▄▄▄▄▁▁▁▁396425002350234622342052192819161782585496445408NANANA
us-gaap:StockholdersEquity █▄▄▄▄▄▃▃▃▁▁▁▁285213461305137312551252119212181127456402359333NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▇█▆▄▂▅▃▁▃895906892874855877865844858NANANANANANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:CommonStock▄▄▄▄▄▄▄▄▄8000.08000.08000.08000.08000.08000.08000.08000.08000.0NANANANANANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings█▂▂▂▂▁▁▁▁1958439415501402378328373267NANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:AssetsCurrent ██▇▇▇▆▆▆▆▁▁▁▁157616331505145714391302122412601168327417357331NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▅▅▄▆▆▄▅▅▂▃▂▂▂▁▁790550490423588636420547498202308264235190135122
us-gaap:AccountsReceivableNetCurrent ████▇▆▆▅▅▁▁▁▁53355053152047943942037436186736362NANANA
us-gaap:InventoryNet ██▆▆▅▄▄▄▃▁▁▁▁120112948168554847358222NANANA
us-gaap:OtherAssetsCurrent ▇▁█▇1942118NA23NANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▇▅▅▇▆▄█▇▆▁131102961351167214912610821NANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▇▆▆▆▅▁▁▁▁66363160659957552149144740046302827NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments algn:ClearAligner▁▁▁██████636363646464646464NANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▁▂▂▂▂▃▃▃█10111314161719212350NANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass algn:ExistingTechnology▁▁▁▁▁████222223333NANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationships▁▃▃▄▄▆▆██344556677NANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:Patents▁▁▁▄▄▄▄▄█333444445NANANANANANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▁▂▃▄▄▅▆▇█737577788081838587NANANANANANANA
 us-gaap:DeferredTaxAssetsLiabilitiesNet us-gaap:Range,us-gaap:IncomeTaxAuthority,us-gaap:StatementScenario,us-gaap:SubsequentEventType srt:Maximum,country:CH,us-gaap:ScenarioForecast,us-gaap:SubsequentEvent1600NANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▅▇▇█▅▅▄▄▃▁▁▁▁2939444826262519172242NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:LiabilitiesCurrent ██▇▇▇▆▅▅▄▁▁▁▁910970870789804692618566517120878073NANANA
us-gaap:AccountsPayableCurrent ▇█▆▆▆▆▄▅▄▂▁▁▁72876361626443484114655NANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇█▁▁▁▂▂▂▃▂546054481510178NANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:OtherLiabilitiesNoncurrent ██▆▆▅▆▅▄▄▂▂▂▁3837292521292115178650NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:StockholdersEquity █▄▄▄▄▄▃▃▃▁▁▁▁285213461305137312551252119212181127456402359333NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▇█▆▄▂▅▃▁▃895906892874855877865844858NANANANANANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:CommonStock▄▄▄▄▄▄▄▄▄8000.08000.08000.08000.08000.08000.08000.08000.08000.0NANANANANANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings█▂▂▂▂▁▁▁▁1958439415501402378328373267NANANANANANANA
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▃▃▃▃▃▃▃▃▁▁▁▁1958439415501402378328373267-131-162-188-204NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▆▃▃▁▁▆▆█▆▆▆▆00-1-1-2-20010000NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▇█▆▄█▄▅▃92182341771172419613977NA1735NA1810NA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▃▅▁▃▅▃▄▆276-6030-246-7430-78-55109NA-7-10NA00NA
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▁▅▅▇▃█▃-34-102-194-95-92-54-144-30-139NA33NA52NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▇█▆▄█▄▅▃92182341771172419613977NA1735NA1810NA
us-gaap:NetIncomeLoss █▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁15181211021477197100106951915163214-494
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings1518NA102147719710010695NANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▆▇▆█▇▄▃▂▁202119232216141211NANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:StatementBusinessSegments algn:ClearAligner▇█▅██▄▂▁▁1011911118766NANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:StatementBusinessSegments us-gaap:CorporateAndOther8NA899NA543NANANANANANANA
us-gaap:IncreaseDecreaseInInventories ▅█▇▆▆▃▁▅▂101714131361114NA00NA00NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities █▃▅▁▃▅▃▄▆276-6030-246-7430-78-55109NA-7-10NA00NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▁▁▅▃▇▇██462426453554535757NA23NA41NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▁▅▅▇▃█▃-34-102-194-95-92-54-144-30-139NA33NA52NA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▄█▃▃▃▆▁▄01002004950501500100NANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.07000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Shares Outstanding

us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value78787879807979808080797980808078767465
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value787878798079798080808080807979080797980808080808180817981808180797878787776767574
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value787878798079798080808080807979080797980808080808180817981808180797878787776767574
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value797980808181818181818181818181818282828182818182818080797877776967
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



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value787979798080808080797979797980808081817980818180797877767675756966
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value19.321.541.291.840.91.22000000000000021.261.321.20.130000000000000341.030.860.870.59999999999999990.640.630.510.61000000000000010.350.390.450.50.470.440.40.430.36-0.520.00.350.260.260.250.140.210.220.430.2-0.720.07
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value19.211.53000000000000021.281.830.891.211.241.31.170.12000000000000011.010.850.850.59000000000000010.630.620.50.60000000000000010.340.390.440.480.470.430.390.420.36-0.520.00.340.260.250.240.140.20.220.420.19-0.720.07
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value55064960760054853450549043612510495108907976
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

algn:ClearAligner



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value481516496469427433385341321282243243219198200187126133123114113104
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax87.485.082.785.584.588.488.20.00.00.00.00.00.00.00.00.00.00.00.090.80.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax87.485.082.785.584.588.488.20.00.00.00.00.00.00.00.00.00.00.00.090.80.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ClearAligner100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:ScannersAndServices



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value699110379785751433527342519981111
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.615.017.314.515.511.611.80.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.615.017.314.515.511.611.80.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ScannersAndServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

algn:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value75848367525347416012402521-2423302524262119241914131492222421111
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.713.013.811.29.610.09.48.413.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.50.01.10.01.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.713.013.811.29.610.09.48.413.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.50.01.10.01.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:OtherInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:CH



Period End2020-03-312019-03-31
Value1840
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CH100.00.0

country:CN



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1945634442385238252226
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.67.010.57.57.87.310.57.85.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.67.010.57.57.87.310.57.85.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CN100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:NL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value021917319217417214115613998127124105958756474837423838354338263231283229272724
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.033.828.632.031.832.328.031.931.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.021.90.023.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.033.828.632.031.832.328.031.931.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.021.90.023.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:NL0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value271300286296279269263254237228217207183175168182166156143145139135134133128123121119105110103938979
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.346.247.149.450.850.452.151.854.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.074.60.075.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.346.247.149.450.850.452.151.854.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.074.60.075.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value55064960760054853450549043612510495108907976
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value156177169168146150133124109103928574726964585750504647444743394040363634333328222121202018
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.427.428.028.026.828.326.425.425.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.026.60.021.621.919.622.625.624.0

Cost Of Goods Sold

Gross Profit

us-gaap:GrossProfit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value394471437432402383371365327317292270235220209205180172157158151150145145137125123112100108100959291827487695957
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.672.672.072.073.271.773.674.674.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.073.40.078.478.180.477.474.476.0

us-gaap:StatementBusinessSegments

algn:ClearAligner



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value3514033793663513303213312962822662502191941891911721661561571471461411411331221201099810597898982
Percentage of GrossProfit89.185.486.784.787.486.286.590.790.788.991.092.693.388.590.593.295.396.599.199.297.997.697.397.497.098.197.196.998.097.196.797.297.7100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.862.062.461.064.061.863.767.668.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.071.30.078.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ClearAligner73.00.073.573.774.90.075.376.577.00.077.978.177.90.077.778.678.30.078.878.379.10.00.00.00.00.00.00.077.679.079.078.678.478.4

algn:ScannersAndServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value426858665052503330352620152519138611333
Percentage of GrossProfit10.914.613.315.312.613.813.59.39.311.19.07.46.711.59.56.84.73.50.90.82.12.42.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.810.69.611.09.29.99.96.97.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ScannersAndServices61.80.064.163.663.60.063.959.659.20.060.056.756.10.057.153.645.00.014.715.028.30.033.5

Operating Expenses

us-gaap:OperatingExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value3243203102553142622462422292081931871731511471401271131191161029993969583851509572726966746153414911951
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.949.451.142.657.349.248.849.552.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.052.50.058.455.238.554.4150.467.8

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value4141393837353230292624242221201815131715131312131310101191010989966655
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.56.46.56.56.86.76.56.36.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.07.10.09.06.95.96.87.17.4

General And Administrative Expense

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2822772672472132121991691621511261211129910110088
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.345.744.645.042.343.345.70.00.00.00.00.00.00.00.00.00.0

Selling And Marketing Expense

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value6915112717687120125122981099883616862655359384248515148414137-384362826261621214520-606
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.723.320.929.416.022.624.825.022.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.020.90.020.022.841.923.0-75.98.2

us-gaap:ConsolidationItems

us-gaap:OperatingSegments



Period End2020-03-312019-03-31
Value180186
Percentage of OperatingIncomeLoss258.6213.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.834.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.0

us-gaap:StatementBusinessSegments

algn:ClearAligner



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value16622121124415817818219016116115413311410510210796
Percentage of OperatingIncomeLoss238.0146.4166.7138.3180.9147.8145.9155.1164.4147.2156.6160.2186.0153.6165.0165.4181.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.234.134.940.628.933.336.238.837.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ClearAligner34.50.041.149.133.80.042.843.941.90.045.341.740.60.042.044.244.0

algn:ScannersAndServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value143732392833311716211386171161
Percentage of OperatingIncomeLoss20.624.825.822.232.228.025.214.416.419.413.710.59.725.119.310.52.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.65.85.46.55.16.36.23.63.70.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:ScannersAndServices20.70.036.037.835.40.040.331.031.30.031.024.821.50.034.326.38.1

us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value-110-117-106-99-88-85-79-69-59-59-52-49-44
Percentage of OperatingIncomeLoss-158.6-92.5-60.5-113.1-71.0-69.5-80.8-70.2-70.8-95.8-84.3-75.8-84.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.1-19.4-17.8-18.1-17.6-17.4-18.20.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateNonSegment



Period End2020-03-312019-03-31
Value-110-99
Percentage of OperatingIncomeLoss-158.6-113.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-20.1-18.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.0

Interest Expense

Other Nonoperating Income Expense

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value01000-2-10100100000000000000000000
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.2-0.00.00.1-0.4-0.30.20.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.3

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value01000-2-101
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0-100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.2-0.00.00.1-0.4-0.3-0.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-18-213-50-70331100-10-1-10000000000000000
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.4-0.42.3-1.0-0.2-1.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.10.00.1-0.10.1-0.6-0.30.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value-146434254382224721031815-7121115121081111101113978248656555125-102
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-265.95.34.37.21.64.24.91.60.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.05.50.05.05.211.95.8-13.33.0

us-gaap:PropertyPlantAndEquipmentByType

algn:TransferredTangibleAndIntangibleAssets



Period End2020-03-31
Value-1493
Percentage of IncomeTaxExpenseBenefit102.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-271.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax algn:TransferredTangibleAndIntangibleAssets0.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value151812210214772959910696108370684650504147273136393735323429-4202721201911161732
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax275.618.916.924.613.217.919.621.822.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.015.30.015.618.129.8

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value1518121102147719710010695108269694751504048273136393835323429-410282020191115163214-494
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax275.518.716.924.513.118.220.021.621.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.015.30.015.117.530.116.6-63.06.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1518102147719710010695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax275.516.924.513.118.220.021.621.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value396425002350234622342052192819161782177716971551145913961358125112071158107910281028987948885885832759703726756768744670649585547496476445408355
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1111115410449729787997356976556275154724144003863413153102812582342352252091881981831831651741651571471581291179499857482
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.046.244.541.443.839.038.136.436.835.330.430.528.428.728.427.326.126.826.125.222.823.823.823.721.323.824.226.122.723.121.621.222.024.422.021.419.120.819.318.323.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value396425002350234622342052192819161782177716971551145913961358125112071158107910281028987948885885832759703726756768744670649585547496476445408355
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value2852134613051373125512521192121811271150118110781044995972909892847798769793752722675696633575520561581602586523490456429402377359333273218161
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets72.053.855.558.656.261.061.963.663.264.769.669.571.671.371.672.773.973.273.974.877.276.276.276.378.776.275.873.977.376.978.478.878.075.678.078.680.979.280.781.776.90.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value00-1-1-2-200100000000000
Percentage of StockholdersEquity-0.0-0.1-0.1-0.1-0.2-0.2-0.10.10.10.0-0.1-0.1-0.00.00.00.00.00.20.10.4
Percentage of Assets-0.0-0.0-0.1-0.1-0.1-0.1-0.00.00.10.0-0.1-0.1-0.00.00.00.00.00.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value895906892874855877865844858886864821783729670607555525439450
Percentage of StockholdersEquity31.467.468.363.668.270.072.569.376.277.186.996.9104.1115.1115.4123.7147.1192.3201.1279.3
Percentage of Assets22.636.338.037.338.342.844.944.148.249.961.970.979.387.788.793.5116.5147.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.07000.07000.07000.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value195843941550140237832837326726313127-30-95-89-116-178-252-221-289
Percentage of StockholdersEquity68.632.731.836.532.030.227.530.623.722.913.23.2-4.1-15.1-15.4-23.7-47.2-92.5-101.2-179.7
Percentage of Assets49.417.617.721.418.018.417.019.515.014.89.42.4-3.1-11.5-11.9-17.9-37.4-71.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value157616331505145714391302122412601168115711011003918952911825783732711657657657615554552544482442527485484435385384327286417388357331261
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.865.364.162.164.463.563.565.865.665.164.964.762.968.367.166.064.863.265.964.063.966.564.962.662.365.563.562.872.664.263.058.557.559.355.852.484.181.580.481.073.6

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302008-12-312007-12-31
Value7905504904235886364205474984493623582613894191671541671741611891991801671822421751643283063042622242402021683082942642351901661351228789
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.922.020.918.126.331.021.828.627.925.321.423.117.927.930.913.412.814.516.115.718.520.219.118.920.629.223.223.445.340.539.735.333.537.134.530.862.161.859.557.70.046.90.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value53355053152047943942037436132232129126724724419217815814814613812913013112611310911210898105102949186827365636254
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.422.022.622.221.421.421.819.520.318.218.918.818.317.718.015.414.713.713.714.213.413.113.714.814.213.614.416.015.013.113.813.714.114.114.815.014.913.714.315.415.4

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1201129481685548473531363535272622221918161415151315131415151515141398622222
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.14.54.03.53.12.72.52.52.01.82.22.32.41.91.91.81.91.71.81.61.41.61.71.51.81.71.92.22.12.02.02.02.01.41.41.10.60.50.50.60.6

Inventory Finished Goods

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value194211823
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0
Percentage of Assets0.50.20.90.81.1

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value131102961351167214912610880637470382737342629262919444443473435353533333331212217
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.34.14.15.85.23.57.86.66.14.63.84.84.82.72.03.02.82.32.72.62.92.04.75.14.95.74.65.05.04.74.44.55.04.93.74.23.6

Noncurrent Assets

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value663631606599575521491447400348295255231175172161148136120108999086817975767672797572625346373030282724
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.725.325.825.625.725.425.523.422.519.617.416.515.912.512.712.912.311.811.210.59.79.19.19.28.99.110.110.910.010.59.89.79.48.37.96.86.26.46.36.77.0

Goodwill

us-gaap:StatementBusinessSegments

us-gaap:Goodwill

algn:ClearAligner



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value6363636464646464646464646461616161616061616161616161616158585858585800
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.62.62.72.72.93.13.33.33.63.63.84.24.44.44.54.95.15.35.66.06.06.26.57.07.07.48.18.88.17.77.67.98.79.00.10.1
Percentage of Assets algn:ClearAligner0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.010.010.912.312.50.10.1

Intangible Assets Net Excluding Goodwill

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value101113141617192123242526272021221718181920202121222324242545464748505051
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.50.60.60.70.91.01.11.31.41.51.71.91.51.61.81.41.61.71.91.92.12.32.52.62.93.23.53.56.16.16.47.37.78.69.4

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

algn:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-06-30
Value2222233333333444444455555666610111111
Percentage of FiniteLivedIntangibleAssetsNet22.020.719.518.417.516.816.115.614.914.614.614.414.319.719.619.526.126.025.825.725.525.425.325.225.125.425.325.225.223.923.823.722.8
Percentage of Assets0.10.10.10.10.10.10.20.20.20.20.20.20.30.30.30.40.40.40.40.50.50.50.60.60.60.70.80.90.91.41.51.82.1
Percentage of Assets algn:ExistingTechnology0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-06-30
Value3445566778889910101111121213131414151516161728293129
Percentage of FiniteLivedIntangibleAssetsNet37.136.936.335.635.234.634.133.833.033.033.533.633.947.447.748.065.065.265.465.665.866.066.266.366.565.966.166.366.962.362.462.957.4
Percentage of Assets0.10.20.20.20.30.30.30.40.40.50.50.60.60.70.80.90.91.01.11.21.31.41.51.61.71.92.12.42.33.83.84.85.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DistributionRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0011233456677
Percentage of FiniteLivedIntangibleAssetsNet0.03.78.112.114.917.619.921.824.325.126.526.926.4
Percentage of Assets0.00.00.00.10.10.20.20.20.30.30.40.50.5
Percentage of Assets us-gaap:DistributionRights0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0000000000000555000000000000000
Percentage of FiniteLivedIntangibleAssetsNet0.30.30.30.30.30.40.50.70.80.91.01.11.526.726.626.50.91.01.01.01.01.01.01.01.01.01.01.10.40.30.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.40.40.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Patents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value33344444555555
Percentage of FiniteLivedIntangibleAssetsNet32.730.929.027.326.124.923.923.122.121.619.719.419.426.7
Percentage of Assets0.10.10.20.20.20.20.20.30.30.30.30.30.40.4
Percentage of Assets us-gaap:Patents0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Trademarks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-06-30
Value0000011111111111111111111111166610
Percentage of FiniteLivedIntangibleAssetsNet8.07.46.96.46.05.75.45.14.94.74.74.64.56.26.16.08.07.97.87.77.77.67.57.47.47.77.67.57.513.613.513.419.8
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.30.30.80.81.01.9
Percentage of Assets us-gaap:Trademarks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value7375777880818385878981798285
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.93.03.33.43.64.04.34.54.95.05.96.88.310.3

Deferred Tax Assets Liabilities Net

us-gaap:Range, us-gaap:IncomeTaxAuthority, us-gaap:StatementScenario, us-gaap:SubsequentEventType

us-gaap:DeferredTaxAssetsLiabilitiesNet

srt:Maximum, country:CH, us-gaap:ScenarioForecast, us-gaap:SubsequentEvent



Period End2020-03-31
Value1600
Percentage of DeferredTaxAssetsLiabilitiesNet100.0
Percentage of Assets40.4
Percentage of Assets srt:Maximum country:CH us-gaap:ScenarioForecast us-gaap:SubsequentEvent0.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value29394448262625191738252214131377877777888843322222223421
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 Assets0.71.61.92.11.21.31.31.01.02.21.51.51.01.01.00.60.60.70.70.80.70.80.80.90.91.01.10.70.40.50.40.40.40.40.50.50.50.70.90.50.6

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value9109708707898046926185665174974614243653543432982742712442222002011981871701751631601431551511431351481201098792807381
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.038.837.033.636.033.732.129.629.128.027.227.425.125.425.223.922.823.422.621.719.520.420.921.119.321.121.522.819.820.619.719.320.322.820.520.017.719.518.018.122.9

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value72876361626443484136454537283330363432292423242018171921191914151419141067556
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.83.52.72.62.83.12.22.52.32.12.73.02.52.02.42.53.03.03.02.92.42.42.62.42.12.12.53.12.72.61.92.02.23.02.41.91.31.61.31.31.7

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5460544815101722827241623101110118771067865455555885
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.42.40.30.20.20.40.80.61.01.30.51.81.71.21.70.81.00.91.10.80.70.71.10.80.81.00.80.80.70.70.80.80.90.81.41.61.3

Accrued Income Taxes Current

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value383729252129211517158321011112222722182220232119141411108766500
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.51.31.10.91.41.10.81.00.90.50.20.20.10.10.10.10.10.20.20.20.32.92.52.02.72.73.32.92.51.91.91.71.61.51.41.41.31.30.20.3

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value2852134613051373125512521192121811271150118110781044995972909892847798769793752722675696633575520561581602586523490456429402377359333273218161
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets72.053.855.558.656.261.061.963.663.264.769.669.571.671.371.672.773.973.273.974.877.276.276.276.378.776.275.873.977.376.978.478.878.075.678.078.680.979.280.781.776.90.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value00-1-1-2-200100000000000
Percentage of StockholdersEquity-0.0-0.1-0.1-0.1-0.2-0.2-0.10.10.10.0-0.1-0.1-0.00.00.00.00.00.20.10.4
Percentage of Assets-0.0-0.0-0.1-0.1-0.1-0.1-0.00.00.10.0-0.1-0.1-0.00.00.00.00.00.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value895906892874855877865844858886864821783729670607555525439450
Percentage of StockholdersEquity31.467.468.363.668.270.072.569.376.277.186.996.9104.1115.1115.4123.7147.1192.3201.1279.3
Percentage of Assets22.636.338.037.338.342.844.944.148.249.961.970.979.387.788.793.5116.5147.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.07000.07000.07000.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value195843941550140237832837326726313127-30-95-89-116-178-252-221-289
Percentage of StockholdersEquity68.632.731.836.532.030.227.530.623.722.913.23.2-4.1-15.1-15.4-23.7-47.2-92.5-101.2-179.7
Percentage of Assets49.417.617.721.418.018.417.019.515.014.89.42.4-3.1-11.5-11.9-17.9-37.4-71.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value8000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.08000.07000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1958439415501402378328373267263301232196131117876727-11-54-30-53-67-63-95-138-172-133-89-74-68-97-116-131-151-162-178-188-204-252
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.417.617.721.418.018.417.019.515.014.817.715.013.49.48.77.05.62.4-1.1-0.60.4-3.1-5.6-7.6-7.2-11.5-18.2-24.6-18.4-11.9-9.7-9.2-14.5-17.9-22.5-27.6-32.7-37.4-42.3-50.2-71.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value00-1-1-2-2001000-10000000000000000000000000000
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.0-0.0-0.1-0.1-0.1-0.1-0.00.00.10.00.0-0.0-0.1-0.1-0.00.00.0-0.10.0-0.0-0.0-0.00.00.10.00.00.0-0.00.00.0-0.0-0.00.00.00.10.10.10.00.1-0.10.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312012-03-302011-12-312011-03-312010-09-302010-03-312009-09-30
Value9218234177117241961397716211811047805976307960623571676917101574117351810
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.833.638.629.521.445.219.128.517.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.016.437.320.713.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value276-6030-246-7430-78-55109-19-12036-145-70194-16-35-73-32-23-36-30-53-18-99-3-37-12-7-1000
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.1-9.35.1-41.1-13.65.8-15.4-11.325.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-6.9-11.00.21.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312012-03-302011-12-312011-03-312010-09-302010-03-312009-09-30
Value-34-102-194-95-92-54-144-30-139-565-51-33-37-2-46-9-11-14-67-7-19-1-66211561483352
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.3-15.8-32.1-15.9-16.9-10.2-28.6-6.3-32.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.63.85.82.7

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312012-03-302011-12-312011-03-312010-09-302010-03-312009-09-30
Value9218234177117241961397716211811047805976307960623571676917101574117351810
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.833.638.629.521.445.219.128.517.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.016.437.320.713.6

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value1518121102147719710010695108269694751504048273136393835323429-410282020191115163214-494
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax275.518.716.924.513.118.220.021.621.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.015.30.015.117.530.116.6-63.06.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1518102147719710010695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax275.516.924.513.118.220.021.621.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value2021192322161412111198776544444444434
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

algn:ClearAligner



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value101191111876655543333
Percentage of DepreciationDepletionAndAmortization48.851.147.248.049.152.251.153.555.854.256.663.155.549.651.368.165.8

algn:ScannersAndServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value12122111111111011
Percentage of DepreciationDepletionAndAmortization8.69.610.110.49.28.88.89.39.710.311.312.213.214.111.020.521.9

us-gaap:CorporateAndOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value8899543322200
Percentage of DepreciationDepletionAndAmortization42.642.741.641.740.137.234.532.124.731.437.711.412.4

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value101714131361114-52070303021-102-210410000
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value276-6030-246-7430-78-55109-19-12036-145-70194-16-35-73-32-23-36-30-53-18-99-3-37-12-7-1000
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.1-9.35.1-41.1-13.65.8-15.4-11.325.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-6.9-11.00.21.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-01-152019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value46242645273554535757694818591417182016101015764451292341
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312012-03-302011-12-312011-03-312010-09-302010-03-312009-09-30
Value-34-102-194-95-92-54-144-30-139-565-51-33-37-2-46-9-11-14-67-7-19-1-66211561483352
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.3-15.8-32.1-15.9-16.9-10.2-28.6-6.3-32.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.63.85.82.7

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value01002004950501500100501535338233501139491202849022
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-27.4530.0090000000000000080.2020.2220.1040.0220000000000000060.1940.0660.0290.2520.1790.177-0.114-0.00500000000000000440.1840.2320.234-0.0219999999999999920.2430.2620.238-0.0099999999999999810.2280.2680.2350.1760.22-0.0750.4590.2210.228
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value156000.00.05000.00.0133000.00.00.098000.0110000.00.00.00.0201000.0-1000.01000.03000.0215000.00.00.0111000.0178000.01000.00.00.0243000.0220000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.00.0100.00.0100.00.00.0100.0100.00.00.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value251000.016000.07000.014000.0255000.010000.011000.021000.0193000.031000.034000.051000.0371000.031000.033000.092000.0558000.08000.029000.0185000.0621000.023000.015000.049000.0894000.0852000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod160.90.0140.00.0191.70.00.021.4175.50.00.00.0184.6-3100.03300.03066.7259.50.00.0166.7348.92300.00.00.0367.9387.3

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-09-302011-03-312010-09-302010-03-312009-09-30
Value22202422211819161514141414141313121314121110910964444433
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value5146464238332753504746454746434240393736332620151052
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value70565357560
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value791551491424588637421548498450363358393171
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:ImpairmentsOfEquityInvestments



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2003000
Percentage of ImpairmentsOfEquityInvestments100.00.00.0100.00.00.00.0

algn:InterestIncomeAndOtherIncomeExpenseNet



Period End2020-03-312019-03-31
Value-16-3
Percentage of InterestIncomeAndOtherIncomeExpenseNet100.0100.0

algn:LesseeOperatingLeasesNoncashOperatingCosts



Period End2020-03-312019-03-31
Value54
Percentage of LesseeOperatingLeasesNoncashOperatingCosts100.0100.0

us-gaap:Range, us-gaap:AwardType

algn:PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod

srt:Maximum, algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-31
Value3.0
Percentage of PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod100.0

srt:Minimum, algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-31
Value2.5
Percentage of PercentageOfMarketPerformanceBasedRestrictedStockUnitsDuringVestingPeriod83.3

us-gaap:AwardType

algn:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndReleasedInPeriodWeightedAverageGrantDateFairValue

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value120.390.04.4300000000000070.072.740.00.05.65999999999999756.750.00.03.600000000000001449.510.01.23999999999999490.035.49-29969.721000.00.029000.0-21977.59
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndReleasedInPeriodWeightedAverageGrantDateFairValue100.00.0100.00.0100.00.00.0100.0100.00.00.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value145.912.8199999999999932.55.32999999999999895.181.78000000000000111.5099999999999914.81000000000000267.120.63000000000000260.42999999999999971.589999999999996351.590.5600000000000023-0.130000000000002560.7544.2738.41-36000.00.036000.0-28969.78
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndReleasedInPeriodWeightedAverageGrantDateFairValue121.20.056.40.0130.80.00.085.0118.30.00.044.2104.20.0-10.50.0124.7-0.1-3600.00.0124.1131.8

algn:TaxWithholdingRelatedToVestingOfRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4513250423147
Percentage of TaxWithholdingRelatedToVestingOfRestrictedStockUnits100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4513250423147
Percentage of TaxWithholdingRelatedToVestingOfRestrictedStockUnits100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value222024222118191615
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value222024222118191615
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-06-30
Value2220242221181916151414141414131312131412111091097765544444
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value11111000000001000100000000000
Percentage of AllocatedShareBasedCompensationExpense5.96.95.65.75.35.05.05.35.65.45.65.46.27.67.36.87.77.36.77.58.49.28.79.19.28.78.89.08.3

us-gaap:ResearchAndDevelopmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value33333222222221111222111111100
Percentage of AllocatedShareBasedCompensationExpense15.017.514.214.014.514.214.716.415.015.415.115.914.714.114.014.013.815.214.416.316.315.616.816.717.213.514.613.915.1

us-gaap:SellingAndMarketingExpense



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value18191816151312111111111010910119832322211
Percentage of AllocatedShareBasedCompensationExpense79.180.280.380.380.278.279.579.478.879.178.478.779.278.577.578.976.275.328.928.630.229.229.227.715.827.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value11111111111111110000
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges



Period End2020-03-312019-06-302019-03-312018-06-302018-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312013-03-312012-09-302012-06-302012-03-31
Value002900000002626000
Percentage of AssetImpairmentCharges0.00.0100.00.00.00.00.00.00.00.0100.00.00.00.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2422013-93218-61127-50010
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2406066-164-48216-1274948864
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

algn:DeferredRevenue



Period End2020-03-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value95706813712510247997461
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value-1487-1-4-17-17-10423-11-171-8-2-6-153004341204-73040
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value-114-301-10-310112-30000-10-1-20000000000
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments



Period End2020-03-312019-03-312018-03-31
Value020
Percentage of FinanceLeasePrincipalPayments0.0100.00.0

us-gaap:GainContingencyPatentsFoundInfringedUponNumber



Period End2020-04-30
Value2.0
Percentage of GainContingencyPatentsFoundInfringedUponNumber100.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-04-30
Value7.0
Percentage of GainContingencyPatentsFoundInfringedUponNumber350.0

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value006-2900
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges0.00.0100.0100.00.00.0

us-gaap:StatementBusinessSegments

algn:ClearAligner



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value006-2900
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges0.00.0100.0100.00.00.0

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000280000
Percentage of ImpairmentOfLongLivedAssetsHeldForUse0.00.00.00.0100.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-312009-09-302009-06-30
Value531551281938412112611710011210286636063655259364247494948424137-394362726261621214520-606
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value000-3-3-2-1-3-11-1-2-1-100000
Percentage of IncomeLossFromEquityMethodInvestments0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value-122000120-55530-1500-50303103001-330000
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value-1325646421945836632272415417201341012237139257041
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value61344-18-20-35680-11
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-12-31
Value-6929296-56128-17-3553424-39-13418-1412-19-1101116-15-7-931-513
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value22514252424239262826231711141615141315665333-1152254
Percentage of IncreaseDecreaseInDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value3716-341335-3838-615260040401-2-51000110130005
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1233222122111
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-03-312019-03-312018-03-31
Value630
Percentage of OperatingLeasePayments100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value00000000000010000000000000
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value0000-1000100010000000000000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-194000.0-18000.041000.0192000.084000.0112000.0117000.0186000.0-129000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-194000.0-18000.041000.0192000.084000.0112000.0117000.0186000.0-129000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value-12-12-4-7-5-5-6-40-4-3-3-2-2-2-3-3-4-3-3-2-2-2-3-100
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-09-302010-03-312009-09-30
Value-1001220000002-2026000000000000100
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-12-31
Value4513250423147711363302232014110431010
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value5104234228125307178033144421691214297143140111811138611874157328
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromCollectionOfNotesReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4866000
Percentage of ProceedsFromCollectionOfNotesReceivable100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-09-302010-03-312009-09-30
Value100809080806070515041404011131055362
Percentage of ProceedsFromIssuanceOfCommonStock100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-03-312018-03-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value0-2000000
Percentage of ProceedsFromPaymentsForOtherFinancingActivities0.0100.00.00.00.00.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-12-31
Value427810426801155280126888786875911782128658961865232385342133
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-31
Value27818058009020111852300753922100
Percentage of ProceedsFromSaleOfAvailableForSaleSecurities100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability



Period End2020-03-312019-03-312018-03-31
Value0510
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability0.0100.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-03-312019-03-312018-03-31
Value21150
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value242.040.0-4.9600000000000080.0245.690.04.91999999999995940.68000000000001221.180.00.01.689999999999997787.110.00.0-0.0199999999999960255.79-61944.080.05000.057000.0-49949.54
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.0100.00.0100.00.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value272.24-0.9099999999999966-0.48000000000001822.969999999999999253.841.06000000000000234.6699999999999592.630000000000024254.228.369999999999994.2800000000000013.8800000000000097102.241.17999999999999261.06000000000000231.829999999999998363.7557.78-58000.01000.057000.0-53946.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue112.50.09.70.0103.30.094.96.5114.90.00.0229.6117.40.00.0-9150.0114.3-0.10.020.0100.0108.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value173000.00.012000.00.0179000.0300.00.0166000.0146000.0-452.00.00.0283000.0-653.019000.0-1000.0253000.0-498.06000.0-1000.0157000.0575.00.0-1000.053000.079000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.00.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value259000.021000.031000.035000.0356000.046000.025000.052000.0439000.066693.024000.072000.0689000.085410.059000.069000.0646000.0120232.076000.087000.0498000.088679.059000.0110000.0470000.0388000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod149.70.0258.30.0198.915333.30.031.3300.7-14755.10.00.0243.5-13079.6310.5-6900.0255.3-24143.01266.7-8700.0317.215422.40.0-11000.0886.8491.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-03-312012-09-302012-03-312011-09-30
Value0.4170.520.00.4860.3570.00.3570.2880.00.2610.2740.3370.3370.2790.3190.3190.3580.00.4230.3730.4670.480.5370.449
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-03-312012-09-302012-03-312011-09-30
Value0.0150.0180.00.0250.0250.00.0190.012-0.00029999999999999990.00930.00530.00770.00770.00410.00260.00260.0024-0.000300000000000000140.0020.0020.0020.0020.0020.003
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-03-312012-09-302012-03-312011-09-30
Value80.5480.420.090.36109.580.078.3847.020.026.0924.4419.9619.9617.115.9815.9816.440.017.9713.8411.1711.999.087.46
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualPayments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-12-31
Value323213421111110100000000010000
Percentage of StandardProductWarrantyAccrualPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrualWarrantiesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-12-312011-03-312010-12-31
Value323234532111111100000000010000
Percentage of StandardProductWarrantyAccrualWarrantiesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value326000.013000.076000.026000.0427000.030000.096000.0169000.0500000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1008090808
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1008090808
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value000011111111111111111002212221
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

algn:AccruedExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value505561524439363627
Percentage of AccruedExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:AccruedFixedAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1891099817121511
Percentage of AccruedFixedAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:AllowanceForDoubtfulAccountsReceivableAndSalesReturnsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value1165432222755543022111111111112110000
Percentage of AllowanceForDoubtfulAccountsReceivableAndSalesReturnsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-03-31
Value383735343230292725242221201918171616151414131212111099876-1
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

algn:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value5555555444444443333333222221111
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease15.615.716.016.316.617.017.518.018.719.319.920.521.021.521.721.922.122.222.222.222.222.322.322.322.421.321.421.421.521.822.1

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value181817171716161515141413131212111110101099887766554
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease49.249.650.451.452.353.554.856.358.660.262.063.765.166.466.967.468.067.967.767.667.467.267.066.766.467.867.567.066.666.365.7

us-gaap:DistributionRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7765543211000
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease19.519.018.016.815.614.012.310.47.45.63.31.30.6

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value590000.0583000.0580000.0575000.0568000.0544000.0513000.0480000.0427000.0390000.0352000.0323000.0136000.0516000.0320000.0121000.0113000.0104000.094000.085000.076000.068000.058000.049000.040000.030000.022000.014000.09000.04000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease1.51.61.61.71.71.81.71.71.71.61.51.50.72.81.80.70.70.70.60.60.60.50.50.40.40.30.20.20.10.1

us-gaap:Patents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value33222221111100
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease8.88.58.38.17.87.57.36.96.66.25.75.14.53.7

us-gaap:Trademarks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value2221111111111111111111111111100
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortizationPeriodIncreaseDecrease5.45.55.65.86.06.26.46.67.07.27.67.98.28.48.68.99.19.29.49.69.810.010.210.510.810.510.811.311.811.912.1

algn:FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1919191919191919191919191919191919191919191919191919191919-45
Percentage of FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

algn:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value44444444444444444444444444444-10
Percentage of FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss22.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.522.523.9

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1010101010101010101010101010101010101010101010101010101010-28
Percentage of FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss55.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.855.862.3

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-116000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.3

us-gaap:Trademarks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value44444444444444444444444444444-6
Percentage of FiniteLivedIntangibleAssetsAccumulatedImpairmentLoss21.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.721.713.6

us-gaap:SubsequentEventType

algn:NumberOfClaimsAsserted

us-gaap:SubsequentEvent



Period End2020-04-30
Value9.0
Percentage of NumberOfClaimsAsserted100.0

algn:PrepaidSoftwareAndMaintenance



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value29710165
Percentage of PrepaidSoftwareAndMaintenance100.0100.0100.0100.0100.0

algn:PropertyPlantAndEquipmentAndROUAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value733687660656631521
Percentage of PropertyPlantAndEquipmentAndROUAssets100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

algn:OtherInternational



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value15113481837325
Percentage of PropertyPlantAndEquipmentAndROUAssets20.619.512.412.711.74.9

country:CH



Period End2020-03-312019-12-31
Value2297
Percentage of PropertyPlantAndEquipmentAndROUAssets31.21.1

country:CN



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value847362575536
Percentage of PropertyPlantAndEquipmentAndROUAssets11.510.69.48.78.87.0

country:CR



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value858281828280
Percentage of PropertyPlantAndEquipmentAndROUAssets11.711.912.412.513.015.4

country:NL



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1226231226211206
Percentage of PropertyPlantAndEquipmentAndROUAssets0.232.935.134.433.539.6

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value182164164170175139
Percentage of PropertyPlantAndEquipmentAndROUAssets24.823.924.925.927.726.7

algn:TaxRelatedReceivables



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value5041355436
Percentage of TaxRelatedReceivables100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding



Period End2020-04-30
Value78
Percentage of EntityCommonStockSharesOutstanding100.0

us-gaap:AccruedIncomeTaxes



Period End2020-03-312019-12-31
Value1514
Percentage of AccruedIncomeTaxes100.0100.0

us-gaap:AccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value259319286245252234219196180194173158125134132107921079591818786817180737564747169667658564451444142
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedProfessionalFeesCurrentAndNoncurrent



Period End2020-03-312019-12-31
Value1210
Percentage of AccruedProfessionalFeesCurrentAndNoncurrent100.0100.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value895906892874855877865844858886880845850864854821824821810775789783775742759729713693694670676655619607588580563555547539525
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value36307278331415450329423283313260257209144150180167159137128127117104857615088532588611995648682164
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value325023023511610113114214926330830134525920044645746544041040239238034433923922821251524845349817
Percentage of AssetsFairValueDisclosure9.081.582.670.828.022.540.033.852.984.1118.3117.0164.9180.0133.1247.3272.2291.9320.5318.8314.9334.1363.4405.1445.6159.3258.0398.519.961.440.447.253.910.610.810.7

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value273204444222
Percentage of AssetsFairValueDisclosure76.110.50.01.71.41.61.61.01.41.3

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value67590508566532552461565438581573562557406353626625624578539530509485429415390317266310139168140999691182
Percentage of AssetsFairValueDisclosure185.1192.0182.6170.8128.0122.5140.0133.8154.6185.5219.9218.6265.9281.4234.4347.3372.2391.9420.5418.8414.9434.1463.4505.1545.6259.3358.0498.5119.9161.4140.4147.2153.9110.6110.8110.7

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value03182922971449818416416427231624328425019340439335931027625425424419818312714711337282320167868
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:CashAndCashEquivalentsFairValueDisclosure

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



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value362361811933694312563902552531771991418792926770
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType, us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalents

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



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value362361811933694312563902552531771991418792926770
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAward

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

algn:StockIncentivePlan2005



Period End2020-03-312014-09-302014-06-302014-03-312013-12-312012-12-312011-05-19
Value27232323231616
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

algn:EmployeeStockPurchasePlan2010, algn:ESPP



Period End2020-03-31
Value2
Percentage of CommonStockCapitalSharesReservedForFutureIssuance8.6

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-03-312019-12-31
Value155164
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredRevenueCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value578563520481433393356321296266241220202191177160145129115101939087858177706359616559545247433733302732
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value36352723191711764
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeAssetNotionalAmount

us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-03-312015-09-30
Value280333320291253200188164616471
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Currency, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

currency:AUD, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value53333
Percentage of DerivativeAssetNotionalAmount2.00.90.91.01.5

currency:BRL, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value150130898381
Percentage of DerivativeAssetNotionalAmount53.538.927.828.540.4

currency:CAD, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value4752443119
Percentage of DerivativeAssetNotionalAmount16.815.613.710.69.9

currency:CNY, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value517431545465375
Percentage of DerivativeAssetNotionalAmount184.4129.1170.3159.5187.1

currency:EUR, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value6797899262
Percentage of DerivativeAssetNotionalAmount24.129.127.831.630.9

currency:GBP, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value2328212116
Percentage of DerivativeAssetNotionalAmount8.38.46.67.28.3

currency:ILS, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-30
Value266311174
Percentage of DerivativeAssetNotionalAmount9.319.134.725.6

currency:JPY, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value26853000270018001700
Percentage of DerivativeAssetNotionalAmount957.8898.6843.6617.5848.4

currency:MXN, us-gaap:PrepaidExpensesAndOtherCurrentAssets, us-gaap:ForeignExchangeForward, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-30
Value160140140140
Percentage of DerivativeAssetNotionalAmount57.141.943.748.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForwardContracts



Period End2020-03-31
Value376
Percentage of DerivativeAssetNotionalAmount134.1

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value87162131111871271028769103847456796555445548483844394332433839313934353041302826
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

algn:EmployeeStockPurchasePlan



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value8137103124231112231121231
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value5236435158394448281214171911131518141619146111314567831
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized629.80.0326.1692.0563.10.01351.53037.51191.70.0367.5610.7497.40.01116.71418.21111.80.0578.6730.8422.90.0853.81015.4671.40.0377.8320.8258.80.0141.7

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value133881001141258090981057276828663717988657584853268788146444244258
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1588.10.0750.71522.71216.50.02730.36143.84383.30.01915.02946.42228.20.05933.37181.85217.60.02678.63261.52437.10.05261.56007.73890.50.02461.11783.31300.00.0691.7

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount



Period End2020-03-312019-12-312018-12-31
Value359
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueAmount100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-04-29
Value6868686868686868686867676759595953535353535353535353535353535353535252
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

algn:ExistingTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-04-29
Value121212121212121212121212121212121212121212121212121212121212121211
Percentage of FiniteLivedIntangibleAssetsGross18.518.518.518.518.518.518.518.518.518.518.618.618.621.221.221.223.623.623.623.623.623.623.623.623.623.623.623.623.623.623.623.722.8

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-04-29
Value333333333333333333333333333333333333333333333333333333333333333329
Percentage of FiniteLivedIntangibleAssetsGross49.249.249.249.249.249.249.249.249.249.249.549.549.656.356.356.362.662.662.662.662.662.662.662.662.662.662.662.662.862.862.863.057.4

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0000000000000666000000000000000
Percentage of FiniteLivedIntangibleAssetsGross0.90.90.90.90.90.90.90.90.90.90.90.90.810.610.610.60.50.50.50.50.50.50.50.50.50.50.50.50.20.20.2

us-gaap:Patents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value66666666666666
Percentage of FiniteLivedIntangibleAssetsGross10.010.010.010.010.010.010.010.010.010.09.39.39.310.6

us-gaap:Trademarks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-04-29
Value7777777777777777777777777777777710
Percentage of FiniteLivedIntangibleAssetsGross10.410.410.410.410.410.410.410.410.410.410.510.510.511.911.911.913.313.313.313.313.313.313.313.313.313.313.313.313.313.313.313.319.8

us-gaap:InventoryFinishedGoodsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value262621181915141111688661233223446664453
Percentage of InventoryFinishedGoodsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterialsNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value5954433729262322131215131491289997586355667
Percentage of InventoryRawMaterialsNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcessNetOfReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value35302925191311121112121314101109765423334333
Percentage of InventoryWorkInProcessNetOfReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesAndLoansReceivableGrossCurrent



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value272527260
Percentage of NotesAndLoansReceivableGrossCurrent100.0100.0100.0100.00.0

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

us-gaap:NotesReceivableFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:UnsecuredDebt, us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-03-312019-12-31
Value2725
Percentage of NotesReceivableFairValueDisclosure100.0100.0

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

us-gaap:FairValueMeasurementsRecurring, us-gaap:UnsecuredDebt, us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-03-312019-12-31
Value2725
Percentage of NotesReceivableFairValueDisclosure100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value20151316150
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value53434359590
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0

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

us-gaap:OtherAssetsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, algn:IsraeliSeveranceFunds, us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-03-312019-12-31
Value33
Percentage of OtherAssetsFairValueDisclosure100.0100.0

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

us-gaap:FairValueMeasurementsRecurring, algn:IsraeliSeveranceFunds, us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-03-312019-12-31
Value33
Percentage of OtherAssetsFairValueDisclosure100.0100.0

us-gaap:OtherReceivablesNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302018-12-31
Value4242186
Percentage of OtherReceivablesNetCurrent100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value227000.0244000.0259000.0273000.0273000.0324000.0324000.0324000.0392000.0428000.0428000.0428000.0428000.0520000.0520000.0538000.0548000.0611000.0611000.0631000.0519000.0498000.0498000.0498000.0497000.0307000.0352000.0369000.0375000.0266000.0320000.0128000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value00000000111111111222222222211111
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber298.2285.2279.5280.6296.7287.3301.2308.3269.4313.3324.5328.0339.3344.0359.2356.5352.2340.3363.0364.7427.2426.5445.6461.0486.7665.8569.0510.3508.3563.9490.3943.8

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value430.5331.35326.15322.53322.53215.07215.07211.91126.5878.5378.5378.5378.5360.4960.4960.2860.3551.4151410.045310.048080.042.042000.032000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-312011-12-31
Value237.27190.6188.86186.47183.06129.42126.52123.73119.3482.377.7275.3772.858.3957.4256.4455.2949.4550.048980.047590.042.0841930.031.8823.9518.71
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue55.157.557.957.856.860.258.858.494.3104.899.096.092.796.594.993.691.696.20.1108.199.0100.299.80.10.00.0

us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding

algn:MarketPerformanceBasedRestrictedStockUnits



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value394674771261109879644948433934392725
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value117131209230381341265258210166175154140125144119114
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding297.9280.1280.9297.0301.0308.2269.2324.6328.0339.3358.9356.4352.1362.9365.1426.9446.0

us-gaap:StandardProductWarrantyAccrual



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value1111101010887655543322222333333344443333322222
Percentage of StandardProductWarrantyAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PlanName

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

algn:ALGNMay2018Repurchase



Period End2020-03-31
Value100
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0

us-gaap:TaxesPayableCurrentAndNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1091021019893789511511911445444645424139373433313018
Percentage of TaxesPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments


us-gaap:GrossProfit us-gaap:StatementBusinessSegments


us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:DepreciationDepletionAndAmortization us-gaap:StatementBusinessSegments