LAZ


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

Table of contents



us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostsAndExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense

us-gaap:InterestIncomeOperating

us-gaap:MarketingAndAdvertisingExpense

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherIncome

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementBusinessSegments

us-gaap:Revenues

us-gaap:RevenuesNetOfInterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities
us-gaap:FairValueByMeasurementBasis

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:MinorityInterest
dei:LegalEntity
us-gaap:AwardType
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:MinorityInterest
dei:LegalEntity
us-gaap:AwardType
us-gaap:ConsolidatedEntities

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

laz:AllowanceForDoubtfulAccountsReceivableChargeOffsForeignCurrencyTranslationAndOtherAdjustments

laz:AmortizationAndOtherAcquisitionRelatedBenefitsCosts

laz:AmortizationOfAwardedGrantsNetOfForfeitures

laz:AmortizationOfDeferredExpensesAndSharebasedIncentiveCompensation

laz:AveragePricePerCommonShare
us-gaap:AwardType
laz:ChargeToRetainedEarningsPertainingToIssuanceOfRestrictedStockUnitsInConnectionWithParticipationRights

laz:CompensationExpenseRelatedToChangeInFairValueOfUnderlyingInvestments

laz:ConsolidatedVariableInterestEntities
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
laz:ContributionFromRedeemableNoncontrollingInterestsNet
us-gaap:SubsequentEventType
laz:DeferredIncentiveCompensationAwardsGranted
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilityAdjustmentToForfeiture
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilityChangeInFairValue
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilityForeignCurrencyTranslationAndOtherAdjustments
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilityForfeited
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilityGranted
us-gaap:DerivativeInstrumentRisk
laz:DerivativeLiabilitySettled
us-gaap:StatementEquityComponents
laz:DividendEquivalentsBusinessAcquisitions
laz:InvestmentRedemptionFrequency, us-gaap:InvestmentType
laz:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage

laz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments
us-gaap:InvestmentType

laz:FundAdministrationAndOutsourcedServicesExpense

laz:NonCashLeaseExpense

laz:PaymentsForOtherFinancingActivities

laz:PaymentsForTaxReceivableAgreementObligation
us-gaap:RelatedPartyTransaction
us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity
laz:PaymentsForUnderwritingFees

laz:PaymentsOrSettlementsForRestructuring
us-gaap:BalanceSheetLocation

laz:PaymentsRelatingToCustomerDeposits
us-gaap:DerivativeInstrumentRisk
laz:PrepaidCompensationAssetAmortization
us-gaap:DerivativeInstrumentRisk
laz:PrepaidCompensationAssetForeignCurrencyTranslationAndOtherAdjustments
us-gaap:DerivativeInstrumentRisk
laz:PrepaidCompensationAssetForfeited
us-gaap:DerivativeInstrumentRisk
laz:PrepaidCompensationAssetGranted

laz:SettlementOfShareBasedIncentiveCompensation

laz:StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization
us-gaap:StatementEquityComponents

laz:TaxExpenseBenefitFromStockIssuedInConnectionWithSharebasedIncentiveCompensation

laz:WeightedAverageNumberOfBasicSharesOutstandingAdjustment

laz:WeightedAverageNumberOfSharesOutstandingBasicBeforeAdjustments
us-gaap:SubsequentEventType
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommunicationsAndInformationTechnology

us-gaap:DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:DerivativeInstrumentRisk

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:DividendsSharebasedCompensationStock
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales
us-gaap:InvestmentType

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:LaborAndRelatedExpense

us-gaap:MinorityInterestChangeInRedemptionValue
us-gaap:StatementEquityComponents

us-gaap:OccupancyNet

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherExpenses

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:PaymentsToMinorityShareholders
dei:LegalEntity
us-gaap:ProceedsFromIssuanceInitialPublicOffering
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProfessionalFees

us-gaap:ProvisionForDoubtfulAccounts
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueAcquisitions

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents

us-gaap:TradingSecuritiesUnrealizedHoldingGainLoss

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

dei:EntityCommonStockSharesOutstanding
us-gaap:ConsolidatedEntities

laz:AccruedEmployeeBenefits

laz:AdvancesAndPrepayments

laz:AggregateCarryingAmountNoninterestBearingTradeReceivables

laz:AggregateCarryingAmountOtherReceivables

laz:AmountOfCarryForwardsWithAnExpirationDate
laz:SpecialPurposeEntity
laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity
laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition
laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeEntity

laz:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards

laz:DeferredTaxLiabilitiesPertainingToCompensationAndBenefits

laz:DepositsAndOtherCustomerPayables
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

laz:DepositsWithBanksAndShortTermInvestments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument
laz:DerivativeCashCollateralForReturnSwaps

laz:EquityFundsThatInvestedInFundsManagedByCompany

laz:FinancingFeeReceivable

laz:GrossDeferredTaxAssetsPertainingToBasisAdjustments

laz:GrossDeferredTaxAssetsPertainingToNetOperatingLossAndTaxCreditCarryforwards

laz:IncomeAndOtherTaxReceivablesCurrent

laz:IndefiniteLivedCarryforwards

laz:InterestBearingFinancingFeeReceivables
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
laz:SpecialPurposeEntity
laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity
laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition
laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeEntity
us-gaap:RelatedPartyTransaction
laz:PayablePursuantToTaxReceivableAgreement
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RetirementPlanType
laz:PensionAndOtherPostretirementAndPostemploymentBenefitPlansAssets

laz:PrepaidCompensationAsset
us-gaap:DerivativeInstrumentRisk

laz:ReceivablesFromCustomersAndOther
us-gaap:ConsolidatedEntities
us-gaap:FinancialInstrument

laz:StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests
us-gaap:ConsolidatedEntities
laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition
laz:TransactionCostsAssociatedWithIPOOfSpecialPurposeEntity

laz:UnclaimedFundsOfSubsidiaries
laz:SpecialPurposeEntity
laz:UnderwritingCostsAssociatedWithTheIPOOfSpecialPurposeAcquisitionEntity

laz:UnrecognizedTaxBenefitsReversalOfInterestAndPenalties

us-gaap:AccountsReceivableNet

us-gaap:AccruedFeesAndOtherRevenueReceivable
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AlternativeInvestment
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
dei:LegalEntity
us-gaap:Capital
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CommonStockHeldBySubsidiary
us-gaap:ConsolidatedEntities

us-gaap:ContractWithCustomerLiability
us-gaap:InvestmentType
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:DeferredFinanceCostsNet
us-gaap:DebtInstrument

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanSponsorLocation
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:ValuationTechnique
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:RetirementPlanSponsorLocation
us-gaap:RetirementPlanType
us-gaap:ValuationTechnique
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialInstrument
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:FinancialInstrument
us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancialInstrument
us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset
us-gaap:ConsolidatedEntities
us-gaap:DueFromAffiliates
us-gaap:ConsolidatedEntities
us-gaap:DueToAffiliateCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrentAndNoncurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:ConsolidatedEntities
us-gaap:EquityMethodInvestments
dei:LegalEntity
us-gaap:ExcessCapital

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments
dei:LegalEntity
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
us-gaap:InvestmentType

us-gaap:FinancialInstrumentsSoldNotYetPurchasedAtFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:BalanceSheetLocation
us-gaap:NatureOfExpense

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:Investments
dei:LegalEntity, us-gaap:InvestmentType
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:InvestmentType
us-gaap:InvestmentType

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

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CreditFacility, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:LongTermDebtFairValue
us-gaap:InvestmentType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:InvestmentType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:OtherAssetsMiscellaneous

us-gaap:OtherFiniteLivedIntangibleAssetsGross
us-gaap:BalanceSheetLocation
us-gaap:NatureOfExpense

us-gaap:OtherIntangibleAssetsNet
us-gaap:BalanceSheetLocation
us-gaap:NatureOfExpense

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:OtherSundryLiabilities
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent
dei:LegalEntity
us-gaap:RatioOfIndebtednessToNetCapital1
us-gaap:BusinessAcquisition
us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:BusinessAcquisition
us-gaap:RedeemableNoncontrollingInterestEquityOtherCarryingAmount

us-gaap:RestrictedCash

us-gaap:RestructuringReserve
us-gaap:BalanceSheetLocation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents
us-gaap:TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Interest Expense
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Derivative Assets
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Finite Lived Intangible Assets Net
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▁▁▁▁▁▁▁█████████████1.1281.1281.1281.1281.1281.1281.1281.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.298NANA1.298NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█113.603478115.822294NA113.181564111.487749114.120179NA113.88169116.175349120.820084NA129.859728130.249054132.142394NA132.393664132.139616132.689375NA132.320855132.341522132.891284NA133.115419132.806045133.735946NA133.566684133.575652134.025991NA134.242144132.464296132.81556NA135.380036134636.935136.594178NA136.857956139.347933138.590593NA138.094101139.9443189.736137
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█106.746654107.29156NA107.168615106.662064106.303962NA109.285727111.981204111.944255NA119.456516120.306257119.930106NA121.243598122.36815122.815163NA124.408884125.461948126.040441NA125.925006126.212645123.655689NA122.206914123.116776121.776207NA122.199954121.759982117.708204NA115.603351118235.32119.229541NA118.315944119.107386115.334754NA111.059071103.52701489.736137
us-gaap:EarningsPerShareBasic ▄▄▅▄▄▃▄▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▄▃▃▃▃▃▂▃▃▃▂▃▃▃▄▃▃▂1.140.81.730.690.680.590.70.420.570.870.970.91.221.33-0.70.90.980.881.040.90.640.531.263.162.960.451.410.730.690.660.440.490.260.13-0.050.290.260.21-0.040.530.520.480.880.580.43-0.38
us-gaap:EarningsPerShareDiluted ▄▄▅▄▄▃▄▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▄▃▃▃▃▃▂▃▃▃▂▃▃▃▄▃▃▂1.080.751.66000000000000010.660.660.560.670.40.550.80.890.821.131.21-0.70.820.910.810.960.850.610.51.182.992.820.421.290.670.640.610.40.450.240.12-0.050.260.240.2-0.040.490.480.430.770.510.39-0.38
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,laz:AssetManagementSegment█▇▇▃▂▃▅▄▅▄▄▆▇▇▇▅▅▃▃▂▁▁▂▂▅▃365.255347.49352.853277.243254.849282.521319.951300.015315.591301.833299.69325.24352.588354.283342.092320.487309.878283.363283.706267.725254.126245.759260.879264.581305.838279.807NANA288.164268.564NANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,laz:FinancialAdvisorySegment▆▂█▂▂▂▅▂▃▃▅▂▅▅▃▂▅▃▅▃▂▁▃▃▂▂451.94318.412511.256305.473304.806298.966400.072305.982329.612338.37413.898310.418422.089409.121335.098305.89410.882335.812404.577343.488286.965266.014330.893330.832316.384301.519NANA280.769275.496NANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▇▆█▆█▁▆▄▅▇▃▅▄▅▆▆▆▇▇▆▆▅▆▄▅▆▅▄▆▅5.942-5.79514.045-5.03812.637-43.4731.318-14.929-14.5133.471-26.353-9.177-16.739-8.7061.618-1.518-3.584.2893.282-2.305-6.411-13.5551.477-21.895-13.13-3.577-11.34-16.845-2.037-10.66NANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,laz:AssetManagementSegment█▇▇▃▂▃▅▄▅▄▄▆▇▇▇▅▅▃▃▂▁▁▂▂▅▃▃▄▃▂365.255347.49352.853277.243254.849282.521319.951300.015315.591301.833299.69325.24352.588354.283342.092320.487309.878283.363283.706267.725254.126245.759260.879264.581305.838279.807285.9291.967288.164268.564NANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,laz:FinancialAdvisorySegment▆▂█▂▂▂▅▂▃▃▅▂▅▅▃▂▅▃▅▃▂▁▃▃▂▂▄▂▁▁451.94318.412511.256305.473304.806298.966400.072305.982329.612338.37413.898310.418422.089409.121335.098305.89410.882335.812404.577343.488286.965266.014330.893330.832316.384301.519359.38291.089280.769275.496NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▆▅▂▂▅▆▁▅▆▇▃▃▇▇▄▄▇▆▃▄▄█▄▄▃▆▃▃▄75.69668.19138.07339.67168.54472.16127.01265.18976.40284.68149.38648.35787.0182.8252.31757.64785.47477.52748.31857.81960.68794.63851.952.0344.8777.92347.146.78751.511NANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▃▆▄▃▂▃▂▃▄▃▃▄▅▁▄▄▄▃▄▃▃▅██▂▄▃▃▃▄▂▂▂▁▂▂▃▁▁▃▃152.24169.957231.306104.22897.94924.25871.9530.06762.651102.00299.943100.208112.588173.086-54.403125.322139.292125.07649.848113.47864.89979.607175.955381.345372.25823.225123.80164.15584.65487.463155.25113.694-16.155-14.374-26.79813.488.61542.065-32.39-42.25770.94474.603NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▄▅▆▄▃▁▅▄▇▃▄▄▄▄▄▅▄▅▄▄▄▅▂▄▄▇▄▄▄▆▃▅▄▅▄▄▄▆▁▄█▆1.7373.5274.8821.424-0.383-5.692.5541.4937.734-0.5650.2861.6531.4151.9690.6032.2620.5232.8771.0040.0821.0073.9-2.4451.2691.0426.6930.421.0610.6934.611-0.4322.5230.5462.1320.5311.0862.0964.602-5.1052.0239.9426.245NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▄▃▆▄▃▂▃▂▃▄▄▄▄▅▁▄▄▄▃▄▃▃▅██▂▄▃▃▃▃▃▂▂▁▃▂▃▁▂▃▃▄▄▂▁153.97873.484236.188105.65297.56618.56874.50431.5670.385101.437100.229101.861114.003175.055-53.8127.584139.815127.95350.852113.5665.90683.507173.51382.614373.329.918124.22165.21685.34792.07447.70276.44215.7663.275-30.90447.15310.71146.667-40.51324.87680.88680.848138.988125.25213.438-59.435
us-gaap:CostsAndExpenses ▄▄▄▃▃▃▄▄▄▄▄▃▄▄▃▃▄▃▄▃▃▃▃▁█▃▃▃▃▃▄▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃656.876525.817660.655472.998476.427453.917602.364538.695529.005524.011530.918487.8557.998568.87320.272480.647544.679473.267534.709459.916421.444399.841453.92.7741410.468503.086434.347452.499467.916426.22539.536399.236449.467380.306565.89382.08392.377448.216466.665374.681388.09364.577463.272373.77351.984472.692
us-gaap:IncomeTaxExpenseBenefit ▆▆▆▆▆▆▆▆▆▆▆▆▆▆█▆▆▆▆▆▆▆▆▇▁▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆41.34543.46422.72928.16522.78925.76639.4464.17728.17223.18742.63329.95651.56124.167441.4932.74251.639.76727.86936.37431.87227.654-15.992170.954-1176.53112.01726.78823.79213.07121.75120.35818.379.0173.948-1.09113.05310.3718.767-6.76420.60517.63613.46320.1789.11313.5236.413
us-gaap:InterestExpense ▆▆▆▆▆▆▇▆▆▅▄▃▂▂▂▂▂▂▃▁▁▁▁▁▁▄▃▃▃▄▅▆▆▆▆▆▆▆▇▇█20.12719.79720.17220.34419.97220.14322.06520.00520.11118.00417.06514.31913.5913.50713.52413.27212.76613.95614.23812.19411.96211.89811.72811.79811.49716.13615.39615.51215.70915.95318.74620.16920.31120.15520.16420.65820.32120.42221.33122.16423.313NANANANANA
us-gaap:InterestIncomeOperating ▂▂▁▁▂▃▆▆▆▆█▄▃▄▃▂▂▂▂▂▂▂▃▂▂▁▂▂▂▂▁▂▂▂▂▁▂▃▅▅▆▅▇██▇1.281.3540.8551.0591.342.4124.0123.9624.0133.85.253.0292.1382.712.2511.631.6091.6541.5651.1281.1681.3721.8931.1021.3620.9291.5451.2431.1531.4190.8821.3471.3451.1311.410.7331.7152.153.3363.4184.3633.4924.935.435.55.107
us-gaap:MarketingAndAdvertisingExpense ▂▁▁▁▁▅▇▇▇▇█▅▇▆9.3326.6518.1617.5626.51720.18630.94727.31828.78427.98432.88921.86828.22825.659NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▃▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▃▃▃▃▃▂▂▃▃▃▂▃▃▃▄▃▃▂123.17887.3189.88975.09273.45864.02276.97746.70465.77797.042113.396107.074146.963159.692-83.558109.21120.378107.553127.982112.53680.35766.823157.786398.521374.11355.953172.38488.85985.19280.84253.21760.28231.35315.36-5.36533.30130.82125.552-4.79362.69962.00455.00799.8564.09144.572-33.534
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▄▅▆▄▄▂▅▄▇▄▄▄▄▄▄▅▄▅▄▄▄▅▃▄▄▆▄▄▄▅▄▅▄▅▄▄▅▅▂▅▇▆█▆▇▁1.7383.5264.8811.423-0.382-5.6912.5541.4927.736-0.5660.2881.6511.4161.9690.6042.260.5232.8771.0050.0821.0073.9-2.4451.2691.0426.6930.4211.0610.7174.587-0.4212.4660.5682.2891.2590.3723.3413.504-3.334.4349.5624.97611.5856.2638.956-7.36
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▄▃▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▃▃▃▃▃▂▂▃▃▃▂▃▃▃▄▃▃121.62986.008186.08973.58772.10963.00975.81646.07964.17397.042113.396107.074146.963159.692-83.558109.21120.378107.553127.982112.53680.35766.823157.786398.521374.11355.953172.38488.85985.19280.84253.21760.28231.35315.36-5.36433.30430.82325.552-4.79462.78562.10755.104100.00664.20744.764NA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▄▃▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▃▃▃▃▃▂▂▃123.17887.3189.13274.7973.27964.02275.83646.07964.17897.042113.396107.074146.963159.692-83.558109.21120.378107.553127.982112.53680.35766.823157.786398.521374.11355.953172.36188.85685.36681.27553.49560.59831.64215.542-9.67335.108NA26.742-4.97466.40366.75659.528109.70770.19954.022NA
us-gaap:OperatingIncomeLoss ▆▆▆▆▆▆▆▅▆▆▆▆▆▆▇▆▆▆▆▆▆▆▆█▁▅▆▆▆▆▅▆▅▅▅▅▅▅▅▆▆▅▆▅▅▅166.261134.29217.499104.6895.86584.097118.97752.373101.685119.663156.317138.681199.94185.828358.536144.212172.501150.197156.856148.992113.23698.377139.349570.744-801.37674.663199.593113.71298.98107.1873.15481.11840.93821.597-5.19746.72644.53337.823-14.88787.73889.20273.446131.61379.46767.051-34.481
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax NA-19.74346.89834.32622.384-50.74639.584-26.76-7.0533.78-11.819-8.676-43.45317.3468.82219.74826.16716.932-53.396-0.159-16.10411.739-9.806-19.03411.791-34.133-31.331-29.14.5475.9133.07412.157-18.334-12.4333.33414.306-21.08319.129-3.152-38.4968.436NANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▇▅█▇▇▃▅▅▅▆▅▅▄▆▇▇▇▇▁▆▅▆▇▅▅▄▃▄▆▆▅▆▅▅29.062-17.34241.41829.13724.49-39.763-5.027-16.636-3.1284.961-13.455-6.864-34.37613.39429.15416.11418.91417.523-78.1350.942-15.45812.78418.169-17.176-1.855-32.728-48.584-24.704-0.5626.645-4.61813.694-16.155-14.374NANANANANANANANANANANANA
us-gaap:OtherIncome ▅▆█▅▇▁▆▄20.35833.76949.026.40241.374-11.14233.35714.668NANANANANA18.67328.23829.25224.18327.92631.57222.26917.4689.8720.6850.05436.19629.62914.55912.93625.66822.22831.20125.69214.20921.68634.60415.60213.56826.20910.26519.53122.2422.8316.44823.92411.47212.389
us-gaap:ProfitLoss ▄▄▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▄██▃▅▄▃▃▃▃▃▂▂▃▃▃▂▃▃▃▄▃▃▂124.91690.826194.7776.51573.07658.33179.53148.19673.51396.476113.684108.725148.379161.661-82.954111.47120.901110.43128.987112.61881.36470.723155.341399.79375.15562.646172.80589.9285.90985.42952.79662.74831.92117.649-4.10633.67334.16229.056-8.12367.13371.56659.983111.43570.35453.528-40.894
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService laz:FinancialAdvisoryFees▇▂█▁▁▁▄▁▂▂▅▁▅▅▂▁▅475.161317.831511.123304.999304.259297.669401.339305.303328.974335.804414.254309.69421.444408.726334.815305.53410.275NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:AssetManagement1█▇▇▂▁▃▅▄▅▄▄▆▇▇▇▅▄346.465326.95337.348265.562245.291269.218304.698287.14296.581292.438281.622312.79335.891338.096327.028301.719293.879NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments laz:IncentiveFees,laz:AssetManagementSegment▆▅█▁▁▁▃▁▂▁▁▁▃▂34.28632.97752.4853.2790.7491.51414.1571.2635.2750.580.5311.95712.4285.599NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments laz:ManagementFeesAndOther,laz:AssetManagementSegment▇▅▄▂▁▃▅▄▅▄▄▆▇█330.969314.513300.368273.964254.1281.007305.794298.752310.316301.253299.159323.283340.16348.684NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RelatedPartyTransactionsByRelatedParty laz:AffiliatedFunds█▇▇▂▁▃▄▃▅▄▄▅▆▇186.446173.678178.273131.885118.573135.955148.932141.365153.198144.17144.147158.425170.68181.309NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments laz:AssetManagementSegment█▇▇▂▁▃▅▄▅▄▄▅▇▇365.255347.49352.853277.243254.849282.521319.951300.015315.591301.833299.69325.24352.588354.283NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments laz:FinancialAdvisorySegment▆▂█▁▁▁▄▁▂▂▅▁▅▅451.94318.412511.256305.473304.806298.966400.072305.982329.612338.37413.898310.418422.089409.121NANANANANANANANANANANANANA291.089NANANA233.842NANANANANANANANANANANANANANA
us-gaap:Revenues ▇▅█▄▄▃▆▄▄▅▅▄▆▆▅▄▆▄▅▄▃▂▄▃▄▄▄▃▃▃▄▂▂▁▃▁▂▂▂▂▂▂▄▂▁▂843.264679.904898.326598.022592.264558.157743.406611.073650.801661.678704.3640.8771.528768.205692.332638.131729.946637.42705.803621.102546.642510.116604.977585.316620.589593.885649.336581.723582.605549.353631.436500.523510.716422.058580.857449.464457.231506.461473.109484.583500.605461.341618.806477.31443.153463.808
us-gaap:RevenuesNetOfInterestExpense ▇▅█▄▄▃▆▄▄▅▅▄▆▆▅▄▆▄▅▄▃▂▄▄▄▄▄▃▃▃▄▂▂▁823.137660.107878.154577.678572.292538.014721.341591.068630.69643.674687.235626.481757.938754.698678.808624.859717.18623.464691.565608.908534.68498.218593.249573.518609.092577.749633.94566.211566.896533.4612.69480.354490.405401.903NANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ██▇▆▆▆▇▆▆▆▅▅▅▄▅▅▅▄▄▄▄▃▄▄▄▁▂▂▂▁▂▁▁▁▁▂▁▁▂▂▂▂▂6406.86209.5595971.8615466.9975312.1185095.1235639.5815551.8795507.4735499.4774997.2414944.7784627.9924485.0954928.6774836.3884769.7624385.2584556.5084302.3034215.6214011.5914486.7664148.0374151.9412827.7313332.2363042.893079.4762898.2033011.1372956.4562921.2292728.1672986.8932994.9462977.8542907.9983081.9363136.4693081.0143159.363422.532NANANA
us-gaap:Liabilities ███▇▇▇███▇▆▅▅▄▅▄▄▄▄▃▃▃▄▃▄▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁▂▂4899.9454767.864972.4284688.2994628.154535.5064958.0074865.6584789.5954728.1054027.1483823.1933514.8883428.9143669.7723467.9133467.0493172.0713262.6953001.1613011.2772788.8433119.462936.1643282.5722290.4262562.1792405.232512.7752342.5622381.1392299.3952329.0182151.0662335.3532161.122151.4462047.222215.082218.4872223.2222318.8992626.415NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇▆▆▆▇▆▆▆▅▅▅▄▅▅▅▄▄▄▄▃▄▄▄▁▂▂▂▁▂▁▁▁▁▂▁▁▂▂▂▂▂6406.86209.5595971.8615466.9975312.1185095.1235639.5815551.8795507.4735499.4774997.2414944.7784627.9924485.0954928.6774836.3884769.7624385.2584556.5084302.3034215.6214011.5914486.7664148.0374151.9412827.7313332.2363042.893079.4762898.2033011.1372956.4562921.2292728.1672986.8932994.9462977.8542907.9983081.9363136.4693081.0143159.363422.532NANANA
us-gaap:StockholdersEquity ▄▃▅▃▂▁▂▂▂▃▅▆▆▅▇█▇▇▇▇▇▇█▇▄▁▃▂▁▁▂▂▁▁▂▃▃▃▃▄▃▃▂826.883765.005911.772693.813600.597486.433609.991613.442618.802701.221916.8511067.1251055.162996.5611199.8031307.8421243.0261153.0771235.9871243.1751146.2011165.3281313.4551154.655810.204473.083706.744572.57500.062485.844560.209582.774518.084496.6569.656713.827704.425738.334726.143773.299710.516693.726652.398NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▄▇▅▃▃▆▄▄▄▆▅▃▄█▆▄▃▅▃▁▂▅▃▂▁▅▃▂▂▃▂▁▁▃▃▂▂▄▄▄▄▆▃▃▂979.899974.6961389.8761109.745896.843793.4771231.593959.001919.2211011.3531246.5371132.395845.167962.281483.8361254.01955.639891.4551158.785853.887646.454701.3241132.083859.984701.172606.3361066.58820.584684.491666.589841.482688.367601.485586.111850.19832.94751.238765.6861003.791989.894984.0121015.9341209.695847.431797.432704.107
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross ███▇▆▆▆▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▁▂▂▃▃▃▂▂▂▁▂▁660.937649.506660.058631.817610.161590.566587.387569.072557.575552.484552.716546.216541.195543.017523.128515.517507.381502.423495.022493.717484.661486.288472.671471.67469.208455.053478.855484.871507.26505.905502.726494.414474.436466.146450.894489.152459.979NA435.102NANANA401.422NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ████▇▇▆▆▆▅▅▅▅▅▅▄▄▄▃▃▃▃▃▂▂▂▂▂▃▂▂▂▁▁▁▃▂▃▃▃▃▂▂408.935398.968402.471398.336381.54370.248367.545352.104351.119342.868339.77331.937325.012329.094317.827314.717307.08296.28286.001289.417282.732279.432265.506261.856255.463245.842256.286257.512270.972262.928253.93244.634232.487226.57225.861272.74261.69265.223266.673268.374272.369264.238250.898NANANA
us-gaap:AmortizationOfIntangibleAssets ▁▁▁▁▁▁▁▂▁▁▁▂▂▂▁▂▂▂▂▂▁▂▃▁▃▂▁▅▂▂█▂▂▂▃▃▃▂█▃▃▂▃▃▃▃0.0150.0150.4360.4580.4550.4460.2831.0950.4310.4310.4830.8560.8630.8330.4970.7840.8220.8290.7130.8350.330.6442.420.5111.8571.0330.4414.020.7061.227.3560.8771.0040.8772.1872.4942.561.1187.0191.7161.7061.4742.6091.7191.7691.77
us-gaap:PropertyPlantAndEquipmentNet ███▆▆▆▆▅▅▅▅▅▅▅▅▄▄▅▅▅▄▅▅▅▅▅▆▆▇▇▇▇▇▇▆▅▄▄▂▁▁▁▁252.002250.538257.587233.481228.621220.318219.842216.968206.456209.616212.946214.279216.183213.923205.301200.8200.301206.143209.021204.3201.929206.856207.165209.814213.745209.211222.569227.359236.288242.977248.796249.78241.949239.576225.033216.412198.289190.08168.429150.708153.006153.572150.524NANANA
us-gaap:Goodwill ███▇▇▆▇▇▇▇▇▇██████▇▆▅▅▅▄▅▅▅▆▆▆▆▆▆▇▇▇▇▇▆▆▅▄▄▂▁380.687381.752383.861373.195368.069355.72371.773366.892371.536372.353371.561374.994377.264383.107385.292385.486381.902379.808373.117346.044322.939327.05320.761316.989326.822324.963335.402343.776352.043349.716345.453350.619348.549365.649364.328364.761360.993360.638356.657350.921320.411316.101313.229267.722254.295NA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▁▁█0.180.1950.210.646NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▇▇▇▆▆▄▆▆▆▆▆▇▇█████▇▄▁▂▁▁▂▂▃▄▆▅▅▆▆380.867381.947384.071373.841369.159357.245373.594368.996374.436375.682375.318379.241382.36388.328391.364392.068389.216387.908382.024353.85328.181332.621326.976325.624335.969335.966347.438356.254368.542366.921363.877376.401375.207NA392.822NANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA537.407NANANA583.239NANANA592.205NANANA640.853NANANA1066.609NANANA1119.491NANANA29.112NANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▄▄▅▆▇█▁▂479.238492.089513.923517.583525.193533.252551.504558.723477.432489.099NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:TaxesPayableCurrent NANA139.705NANANA138.363NANANA130.261NANANA123.548NANANA99.278NANANA109.438NANANA101.351NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt ▇▇▇▇▇▇▇▇▇█▅▅▃▃▃▃▃▃▃▁▁▁▁1683.9841683.3621682.7411681.4871680.8451680.2041679.5621678.9211678.1311759.2971434.261433.7021191.2771190.831190.3831189.9361189.4891189.0431188.6990.488990.111989.735989.358NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▂▁▂▂▁▃▂▂▁▄▅▅▇▇▃▇▆▇▇▇██1.3352.2021.0412.5822.9210.9633.5111.9982.7170.9525.5716.4817.1849.529.4074.2818.9668.8019.1689.37710.04610.79411.104NANANA29.929NANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▅▅▄▃▃▂▂▂▄▂▁▁▁▁▁▂▁▂▁▁▁▁▁▁▁▂▂▂▂▂▂▃▃▃▃▆▆▆█████104.972101.69487.66184.88583.37173.18471.58372.77999.07670.15153.24254.4657.94259.6259.10260.63359.68760.1157.82657.96758.14357.4253.85157.21859.16564.22263.31365.0966.63969.79769.78974.28774.12780.50181.884119.999121.983122.444140.713144.683147.276146.735143.719NANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA74.048NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA68.057NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA65.205NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA59.387NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA377.85NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▄▃▅▃▂▁▂▂▂▃▅▆▆▅▇█▇▇▇▇▇▇█▇▄▁▃▂▁▁▂▂▁▁▂▃▃▃▃▄▃▃▂826.883765.005911.772693.813600.597486.433609.991613.442618.802701.221916.8511067.1251055.162996.5611199.8031307.8421243.0261153.0771235.9871243.1751146.2011165.3281313.4551154.655810.204473.083706.744572.57500.062485.844560.209582.774518.084496.6569.656713.827704.425738.334726.143773.299710.516693.726652.398NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▄▄▅▃▂▁▂▂▃▃▅▆▆▅▇█▇▇▇▇▇▇█▇▄▁▃▂▁▁▂▂▁▁▂▃▃▄▄▄▄▄▃▂▁▁931.855866.699999.433778.698683.968559.617681.574686.221717.878771.372970.0931121.5851113.1041056.1811258.9051368.4751302.7131213.1871293.8131301.1421204.3441222.7481367.3061211.873869.369537.305770.057637.66566.701555.641629.998657.061592.211577.101651.54833.826826.408860.778866.856917.982857.792840.461796.117635.994584.938568.923
us-gaap:CommonStockValue ▁▁▁▁▁▁▁█████████████1.1281.1281.1281.1281.1281.1281.1281.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.298NANA1.298NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock 58.0NA135.43995.14352.274NA41.02682.003582.342535.926750.692701.849652.013619.43788.14732.981673.242608.073688.231623.512569.154526.298600.034569.535527.454509.383702.8NANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▇▇▇▇▇▇▆▆▆▇▇▇▇▆▆▆▇▆▄▂▃▂▂▁▁▁▁▁▁▂▂▂▂▂▁▁▁1348.1211278.9071295.3861160.311140.0151119.1761193.571168.3821179.9011171.7541195.5631140.611092.3811005.5481080.4131219.3031166.0261101.9881134.1861058.189998.132970.8081123.7281014.145664.001338.165464.655333.294285.476242.818203.236219.319193.958197.297182.647270.245264.682262.1258.646285.575244.633204.666166.468NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▃▃▂▂▁▂▂▂▂▂▃▃▄▃▃▂▂▁▃▃▃▃▃▃▃▄▅▆▆▅▆▅▆▆▇▆▇▆▇██▇-226.648-255.711-238.368-279.785-308.921-333.412-293.648-288.621-271.984-268.858-273.818-260.365-253.499-219.124-232.518-261.673-277.785-296.699-314.222-236.088-237.03-221.572-234.356-252.525-235.349-233.494-200.766-152.184-127.48-126.383-133.004-127.852-141.489-124.758-110.541-81.408-94.171-71.903-88.364-57.712-17.827-26.567-46.158NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA-238.368NANANA-293.648NANANA-273.818NANANA-232.518NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▅▅▄▃▃▂▂▂▄▂▁▁▁▁▁▂▁▂▁▁▁▁▁▁▁▂▂▂▂▂▂▃▃▃▃▆▆▆█████104.972101.69487.66184.88583.37173.18471.58372.77999.07670.15153.24254.4657.94259.6259.10260.63359.68760.1157.82657.96758.14357.4253.85157.21859.16564.22263.31365.0966.63969.79769.78974.28774.12780.50181.884119.999121.983122.444140.713144.683147.276146.735143.719NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▄▃▂▂▃▄▁▃▄▄▂▂▄▄▂▃▄▄▂▃▃▅▂▂▂▄▂▂▂▃▂▃▃▃▅▃▃▄▃▃▃▅▃▂▂█75.69668.19138.07339.67168.54472.16127.01265.18976.40284.68149.38748.35687.0182.8252.31757.64785.47477.52748.31857.81960.68794.63851.952.0344.8777.92347.146.78751.51160.79752.55755.2657.36970.71290.17367.68966.3586.13663.67658.93358.97693.55755.4547.35551.729150.769
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▂▂▂▁▁▂▅▂█1.4011.020.6080.0360.4081.3863.7751.1026.999NA1.5045.1353.0931.4512.1341.3160.7421.0011.1450.2580.2840.3310.9223.2166.0995.7843.8462.611.5423.928NANA4.6642.61710.1713.177-10.57923.2573.70710.5565.0522.00215.6539.8194.4173.074
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▁▇▆▅▁▇▆▆▁█▆▄▃▇▇138.417-123.34320.525255.71155.672-155.976359.544235.844243.816-161.251407.578226.684103.485-38.709323.687332.858NANANANANANANANANANANANANANA358.83154.30986.643-73.085242.082205.337116.696-82.207116.182266.75384.553-69.686122.16138.048139.437-230.847
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▁▆▅▅█▃▅▇▆▇▄▅▅▇-9.898-6.87-28.88-9.297-12.82-11.942-1.677-22.592-12.178-5.801-8.231-7.262-15.789-14.927-11.74-5.965NANANANANANANANANANANANANANA-6.052-12.893-9.041-26.567-15.369-22.676-21.649-25.239-28.353-11.447-3.567-1.91298.48114.23221.97777.035
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆█▅▅▆▃▄▅▄▇▄▇▆▁▇▅-43.704244.519-162.933-70.461-3.779-310.178-255.383-101.399-180.8493.572-270.423103.50527.602-586.788165.451-168.693NANANANANANANANANANANANANANA-213.192-66.598-58.75-148.532-215.804-108.508-100.254-138.654-67.625-230.252-122.546-131.936-52.111-122.042-56.033-47.7
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▅▆▆▆▁▆▅▅▄▅▇▅▁█▆101.60635.104224.105252.057177.053-539.947166.9928.06771.837-103.22105.633303.33419.13-591.018512.943195.237NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▆▆▆▆▆▆▅▆▆▆▆▆▆█▆▆▆▆▆▆▆▅▆▁▅▆▆13.96829.67316.4687.2711.88811.52231.285-13.8362.9614.46218.0996.48814.4016.398450.46410.76322.41617.5214.47624.02513.57311.586-44.126138.66-821.0-9.1125.7857.569NANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▆▅▅▄▄▅█▄▃▃▄▄▄▃▃▃▂▂▄▃▃▄▄▄▃▃▃▄▄▅▅▅▄▃▄▂▃▁9.5779.3619.3798.4028.3288.98610.7158.618.0618.1868.88.6278.4428.2348.2897.8387.7097.6628.6787.9568.2418.3898.5348.3518.0247.8768.1328.6768.7978.8599.2858.8728.5348.0598.3837.6727.8256.975NANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▁▇▆▅▁▇▆▆▁█▆▄▃▇▇138.417-123.34320.525255.71155.672-155.976359.544235.844243.816-161.251407.578226.684103.485-38.709323.687332.858NANANANANANANANANANANANANANA358.83154.30986.643-73.085242.082205.337116.696-82.207116.182266.75384.553-69.686122.16138.048139.437-230.847
us-gaap:NetIncomeLoss ▄▃▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▅██▃▅▄▃▃▃▃▃▂▂▃▃▃▂▃▃▃▄▃▃▂123.17887.3189.88975.09273.45864.02276.97746.70465.77797.042113.396107.074146.963159.692-83.558109.21120.378107.553127.982112.53680.35766.823157.786398.521374.11355.953172.38488.85985.19280.84253.21760.28231.35315.36-5.36533.30130.82125.552-4.79362.69962.00455.00799.8564.09144.572-33.534
us-gaap:ProfitLoss ▄▄▅▃▃▃▃▃▃▄▄▄▄▅▁▄▄▄▄▄▃▃▄██▃▅▄▃▃▃▃▃▂▂▃▃▃▂▃▃▃▄▃▃▂124.91690.826194.7776.51573.07658.33179.53148.19673.51396.476113.684108.725148.379161.661-82.954111.47120.901110.43128.987112.61881.36470.723155.341399.79375.15562.646172.80589.9285.90985.42952.79662.74831.92117.649-4.10633.67334.16229.056-8.12367.13371.56659.983111.43570.35453.528-40.894
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▁▆▅▅█▃▅▇▆▇▄▅▅▇-9.898-6.87-28.88-9.297-12.82-11.942-1.677-22.592-12.178-5.801-8.231-7.262-15.789-14.927-11.74-5.965NANANANANANANANANANANANANANA-6.052-12.893-9.041-26.567-15.369-22.676-21.649-25.239-28.353-11.447-3.567-1.91298.48114.23221.97777.035
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▂█▃▄▄▁▆▄▂▃▂▄▅▄▂▂▁▅▃▂▂▃▂▃▂▃▃▁▁▂▄▄█▅▆▆▇█▃▁▁▁▂▁▁9.8727.49830.0769.31312.88612.0112.08822.60512.1935.87110.257.315.88516.15812.2076.0555.5613.84716.67910.9525.6645.4548.155.0419.3834.0558.0238.3312.6773.1536.6212.99712.14929.19817.57922.78122.09326.84829.16111.6013.7221.9543.3094.6083.0212.444
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆█▅▅▆▃▄▅▄▇▄▇▆▁▇▅-43.704244.519-162.933-70.461-3.779-310.178-255.383-101.399-180.8493.572-270.423103.50527.602-586.788165.451-168.693NANANANANANANANANANANANANANA-213.192-66.598-58.75-148.532-215.804-108.508-100.254-138.654-67.625-230.252-122.546-131.936-52.111-122.042-56.033-47.7
us-gaap:PaymentsOfDividendsCommonStock ▂▂▂▂▂▂▂▂▂▄▂▂▂█▂▂▂█▂▂▂█▂▂▂▆▁▁▁▁▂▁49.52349.44149.36549.34149.13348.75949.36550.23551.922103.40251.78952.62252.844202.38449.15749.86650.163192.26446.81247.24147.703194.38243.92544.12444.245158.3936.64936.61137.06435.91760.68930.593NANA68.88923.20823.84719.16419.16318.55418.7414.11513.86713.69212.23110.791
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▄▁▁▁▄▃▃▆▆█▃▃▅▃▃▃▄▃▂▄▃▁▂▂▃▁▂▂▄▃▂▂▂▅▃▃▃▂▂▄▂▂▃▂▁111.093122.6520.00.00.095.22764.40678.569159.615192.097246.28182.79677.846145.94954.20367.64678.844106.04871.35234.136111.58983.1413.30141.73834.7782.9630.050.3435.382106.93554.54327.48720.27930.168131.78570.26681.87370.5446.21832.3893.54832.68943.66583.58321.7530.98
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1128000.01128000.01128000.01128000.01128000.01128000.01128000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value1128000.01128000.01298000.01298000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.10.20.10.1

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value11311511311111411311612012913013213213213213213213213313213313313313413413213213513463613613613913813813989
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value10610710710610610911111111912011912112212212412512612512612312212312112212111711511823511911811911511110389
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.140.81.730.690.680.590.70.420.570.870.970.91.221.33-0.70.90.980.881.040.90.640.531.263.162.960.451.410.730.690.660.440.490.260.13-0.050.290.260.21-0.040.530.520.480.880.580.43-0.38
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.080.751.660.660.660.560.670.40.550.80.890.821.131.21-0.70.820.910.810.960.850.610.51.182.992.820.421.290.670.640.610.40.450.240.12-0.050.260.240.2-0.040.490.480.430.770.510.39-0.38
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value7568383968722765768449488782525785774857609451524477474651
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating5913.85036.30.03746.15115.22991.70.01645.41903.92228.40.01596.54069.73056.10.03536.65312.24687.20.05125.85195.86897.80.04721.43294.48387.80.03764.04467.6

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

laz:DeferredStockUnit


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.6310.1870.1870.1961.7910.1860.1860.1941.7820.1830.1780.1791.7240.1930.1550.1561.5420.1550.1040.1051.4460.0650.0310.0321.3630.0310.1030.1021.434
Percentage of AllocatedShareBasedCompensationExpense2.20.30.50.52.60.30.70.32.30.20.40.42.00.20.30.31.80.20.20.22.40.10.10.13.00.00.20.22.8
Percentage of InterestIncomeOperating127.413.80.018.5133.77.70.04.944.44.80.05.980.67.10.09.695.89.40.09.3123.84.70.02.9100.13.30.08.2124.4
Percentage of InterestIncomeOperating laz:DeferredStockUnit0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:PerformanceBasedRestrictedStockUnit


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.1555.5590.6370.6360.634.361-7.798140.9281.3212.9893.10717102.6729.89616114.74211101611108.4146.198
Percentage of AllocatedShareBasedCompensationExpense0.28.21.71.60.96.0-28.921.91.21.66.16.419.613.25.117.219.215.29.819.517.017.622.619.618.88.0
Percentage of InterestIncomeOperating12.1410.60.060.147.0180.80.0360.723.134.80.0102.6797.5404.70.0607.11020.3712.30.0997.5884.81216.40.0926.2617.8667.2
Percentage of InterestIncomeOperating laz:PerformanceBasedRestrictedStockUnit0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:ProfitsInterestParticipationRights


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value32214.1214.12116162.4326.2241718
Percentage of AllocatedShareBasedCompensationExpense42.431.610.810.424.622.49.09.522.821.8
Percentage of InterestIncomeOperating2508.51593.30.0389.11260.1670.20.0157.1433.9486.0
Percentage of InterestIncomeOperating laz:ProfitsInterestParticipationRights0.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStock


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5.6996.0675.0075.4239.0158.5314.4517.2748.0859.5126.9386.9512108.8627.697139.6496.7037.0158.342233.2543.6352.83122.6172.6374.244
Percentage of AllocatedShareBasedCompensationExpense7.58.913.213.713.211.816.511.210.611.214.014.414.513.016.913.415.412.413.912.113.724.86.37.06.316.25.65.68.2
Percentage of InterestIncomeOperating445.2448.10.0512.1672.8353.70.0183.6201.5250.30.0229.4589.3397.50.0472.2818.0583.40.0621.9714.21711.10.0329.9207.81358.80.0212.1368.1
Percentage of InterestIncomeOperating us-gaap:RestrictedStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value3634282940422737485539385560403954553639405436383259373940
Percentage of AllocatedShareBasedCompensationExpense47.751.073.973.858.759.5102.757.163.165.279.578.863.973.577.769.263.672.276.168.266.857.571.173.371.975.879.883.679.5
Percentage of InterestIncomeOperating2820.52570.50.02766.33001.71779.30.0939.11200.91452.60.01258.52602.22246.80.02447.73378.13382.20.03497.13472.93965.60.03462.42368.86358.60.03144.93550.0
Percentage of InterestIncomeOperating us-gaap:RestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value15269231104972471306210299100112173-54.4031251391254911364791753813722312364848715513-16.155-14.374-26.798138.61542-32.39-42.2577074
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating11893.85166.70.09842.17309.61005.70.0758.91561.22684.30.03308.35266.06386.90.07688.58657.17562.00.010060.15556.45802.30.034604.827331.72500.00.05161.37342.16163.70.01016.6-1201.1-1270.90.01839.0502.31956.50.0-1236.31626.02136.4

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.7373.5274.8821.424-0.383-5.692.5541.4937.734-0.5650.2861.6531.4151.9690.6032.2620.5232.8771.0040.0821.0073.9-2.4451.2691.0426.6930.421.0610.6934.611-0.4322.5230.5462.1320.5311.0862.0964.602-5.1052.0239.9426.245
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating135.7260.50.0134.5-28.6-235.90.037.7192.7-14.90.054.666.272.70.0138.832.5173.90.07.386.2284.30.0115.276.5720.50.085.460.1324.90.0187.340.6188.50.0148.2122.2214.00.059.2227.9178.8

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value153732361059718743170101100101114175-53.8127139127501136583173382373291246585924776153.275-30.904471046-40.51324808013812513-59.435
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating12029.55427.20.09976.67281.0769.80.0796.61753.92669.40.03362.95332.26459.60.07827.28689.67736.00.010067.45642.66086.50.034720.027408.23220.50.05246.77402.26488.70.05675.01172.2289.60.06432.9624.52170.60.0727.81853.92315.20.02306.7244.3-1163.8

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6565256604724764536025385295245304875575683204805444735344594213994532.7741410503434452467426539399449380565382392448466374388364463373351472
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating51318.438834.30.044664.635554.318819.10.013596.513182.313789.80.016104.326099.120991.50.029487.533852.028613.50.040772.736082.529142.90.0251.7103558.654153.50.036403.840582.530036.60.029638.933417.633625.60.052125.522879.120847.30.010962.08895.010440.30.06883.46399.79255.8

us-gaap:CostsAndExpenses us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-31
Value1835326.654302.3014.8815.7293336-15.681251014-190.36417152111155.015-2.39824-438.33396378285.044
Percentage of CostsAndExpenses2.86.85.01.46.40.50.81.16.46.9-3.05.21.82.5-59.43.72.84.62.13.31.2-0.65.3-15801.568.315.66.21.2
Percentage of InterestIncomeOperating1443.72634.20.0628.32265.995.40.0144.6840.9957.90.0844.7479.9535.20.01101.2935.91315.90.01356.2429.4-174.80.0-39776.170738.38434.82504.3355.5
Percentage of InterestIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostsAndExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, laz:AssetManagementSegment


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-31
Value269232261200195204235225219207241211229229188217215188226185182175182179193181185175
Percentage of CostsAndExpenses41.044.139.542.340.945.139.141.941.439.645.543.441.140.459.045.239.639.942.340.443.443.840.16458.413.736.139.641.2
Percentage of InterestIncomeOperating21040.217142.00.018904.114555.98489.60.05699.65457.85456.50.06984.610737.28474.90.013327.213418.311411.80.016467.515642.312766.80.016257.314228.419568.616065.712386.3
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, laz:FinancialAdvisorySegment


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-31
Value369258366266251246362307276280305250318324321245313262297258233227247261253242253245
Percentage of CostsAndExpenses56.249.155.556.352.754.460.157.052.253.557.551.457.057.1100.451.157.655.555.656.355.556.854.69443.118.048.354.257.6
Percentage of InterestIncomeOperating28834.619058.10.025132.218732.510234.10.07752.36883.67375.30.08275.014882.011981.40.015059.219497.815885.80.022949.020010.916550.90.023770.618591.926150.222012.517294.9
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:FinancialAdvisorySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value414322282225394.17728234229512444132513927363127-15.992170-1176.531122623132120189.0173.948-1.09113108.767-6.764201713209.113136.413
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating3230.13210.00.02659.61700.71068.20.0105.4702.0610.20.0989.02411.6891.80.02008.73207.02404.30.03224.62728.82015.60.015513.1-86382.61293.50.01914.11133.71532.80.01363.8670.4349.10.01780.8604.7407.80.0602.8404.2385.50.0167.8245.9125.6

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2019202019202220201817141313131312131412111111111116151515151820202020202020212223
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1572.41462.10.01921.11490.4835.10.0504.9501.1473.80.0472.7635.6498.40.0814.2793.4843.80.01081.01024.1867.20.01070.6844.11736.90.01247.91362.41124.20.01497.31510.11782.10.02818.31184.9949.90.0648.4534.3

Interest Income Operating

us-gaap:InterestIncomeOperating

us-gaap:InterestIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.281.3540.8551.0591.342.4124.0123.9624.0133.85.253.0292.1382.712.2511.631.6091.6541.5651.1281.1681.3721.8931.1021.3620.9291.5451.2431.1531.4190.8821.3471.3451.1311.410.7331.7152.153.3363.4184.3633.4924.935.435.55.107
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Marketing And Advertising Expense

us-gaap:MarketingAndAdvertisingExpense

us-gaap:MarketingAndAdvertisingExpense


Marketing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.3326.6518.1617.5626.517203027282732212825
Percentage of MarketingAndAdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating729.1491.2954.5714.1486.3836.9771.4689.5717.3736.4626.5722.01320.3946.8

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.7383.5264.8811.423-0.382-5.6912.5541.4927.736-0.5660.2881.6511.4161.9690.6042.260.5232.8771.0050.0821.0073.9-2.4451.2691.0426.6930.4211.0610.7174.587-0.4212.4660.5682.2891.2590.3723.3413.504-3.334.4349.5624.976116.2638.956-7.36
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating135.8260.4570.9134.4-28.5-235.963.737.7192.8-14.95.554.566.272.726.8138.732.5173.964.27.386.2284.3-129.2115.276.5720.527.285.462.2323.3-47.7183.142.2202.489.350.8194.8163.0-99.8129.7219.2142.5235.0115.3162.8-144.1

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity

laz:Edgewater


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.8741.4561.830.168-2.944-1.4031.6131.3027.501-0.5660.2861.6511.4151.9680.6022.260.522.8771.0040.0811.0073.9-2.4451.2681.0416.6930.4211.060.5524.12-0.7582.0180.2872.3661.323-1.7041.6982.174-3.3620.5875.8821.0233.179-0.3661.27
Percentage of NetIncomeLossAttributableToNoncontrollingInterest107.841.337.511.8770.724.763.287.397.0100.099.3100.099.999.999.7100.099.4100.099.998.8100.0100.0100.099.999.9100.0100.099.977.089.8180.081.850.5103.4105.1-458.150.862.0101.013.261.520.627.4-5.814.2
Percentage of InterestIncomeOperating146.4107.5214.015.9-219.7-58.240.232.9186.9-14.95.454.566.272.626.7138.732.3173.964.27.286.2284.3-129.2115.176.4720.527.285.347.9290.3-85.9149.821.3209.293.8-232.599.0101.1-100.817.2134.829.364.5-6.723.1
Percentage of InterestIncomeOperating laz:Edgewater0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:LGAC


Net
Period End2021-06-302021-03-31
Value-2.558-0.2
Percentage of NetIncomeLossAttributableToNoncontrollingInterest-147.2-5.7
Percentage of InterestIncomeOperating-199.8-14.8
Percentage of InterestIncomeOperating laz:LGAC0.00.0

laz:OtherEntity


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value0.0020.0020.00.0020.0010.0010.0010.0010.0020.00.0010.0010.0020.00.0030.0010.0010.00.0010.0010.00.0010.001
Percentage of NetIncomeLossAttributableToNoncontrollingInterest0.10.10.00.1-0.30.00.10.00.70.00.10.10.30.00.60.11.2-0.00.10.10.00.10.1
Percentage of InterestIncomeOperating0.20.10.00.20.10.00.00.00.00.00.00.00.10.00.20.10.10.00.10.10.00.10.1
Percentage of InterestIncomeOperating laz:OtherEntity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.422.2683.0511.2532.561-4.2880.940.1890.234
Percentage of NetIncomeLossAttributableToNoncontrollingInterest139.264.362.588.1-670.475.336.812.73.0
Percentage of InterestIncomeOperating189.1167.5356.8118.3191.1-177.823.44.85.8
Percentage of InterestIncomeOperating us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1218618673726375466497113107146159-83.55810912010712711280661573983745517288858053603115-5.364333025-4.7946262551006444
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9502.36352.121764.86948.75381.32612.31889.71163.01599.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.44543.51797.31188.5-143.71836.91423.51578.02028.51182.4813.9

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1238718974736475466497113107146159-83.55810912010712711280661573983745517288858153603115-9.6733526-4.9746666591097054
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9623.36447.622120.77062.35468.62654.31890.21163.01599.32553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911156.17148.57403.85727.66065.24498.72352.61374.2-686.04789.61243.8-149.11942.71530.01704.72225.31292.8982.2

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value16613421710495841185210111915613819918535814417215015614811398139570-801.376741991139810773814021-5.197464437-14.8878789731317967-34.481
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating12989.19918.025438.59884.87154.13486.62965.51321.92533.93149.02977.54578.49351.76857.115927.98847.410721.09080.810022.713208.59694.97170.37361.351791.7-58838.28036.912918.69148.28584.67553.28294.16022.13043.71909.5-368.66374.62596.71759.2-446.32566.92044.52103.32669.61463.51219.1-675.2

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-12.537-41.462-18.753-11.692-17.726-45.774-3.563-20.658-48.259-32.931-10.672-34.762-26.999-23.211191-19.467-18.639-17.476-7.921-17.603-11.426-11.157-22.634416-976.586-81.936-25.609-22.613-30.912-15.704
Percentage of OperatingIncomeLoss-7.5-30.9-8.6-11.2-18.5-54.4-3.0-39.4-47.5-27.5-6.8-25.1-13.5-12.553.5-13.5-10.8-11.6-5.0-11.8-10.1-11.3-16.273.0121.9-109.7-12.8-19.9-31.2-14.7
Percentage of InterestIncomeOperating-979.5-3062.2-2193.3-1104.1-1322.8-1897.8-88.8-521.4-1202.6-866.6-203.3-1147.6-1262.8-856.58528.7-1194.3-1158.4-1056.6-506.1-1560.5-978.3-813.2-1195.737789.3-71702.3-8819.8-1657.5-1819.2-2681.0-1106.7
Percentage of InterestIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, laz:AssetManagementSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value951159177597784749694581131231241531039394578171707885112988910010292
Percentage of OperatingIncomeLoss57.785.942.273.662.492.571.1141.795.079.037.382.061.567.142.771.654.563.036.755.063.171.856.615.0-14.0131.344.688.4104.086.6
Percentage of InterestIncomeOperating7495.48521.910740.87275.64462.73223.52109.11872.72406.42486.41111.93752.95754.34598.36801.76334.65840.75720.23679.67267.06115.15145.64163.77751.98226.710550.65764.08082.58926.96540.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, laz:FinancialAdvisorySegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value826014439535237-1.165535810859103841360977310784533883686358136352630
Percentage of OperatingIncomeLoss49.845.066.437.656.162.031.9-2.252.548.669.543.152.045.43.841.956.348.668.356.847.039.659.712.1-7.978.568.231.527.228.1
Percentage of InterestIncomeOperating6473.24458.316891.03713.24014.32160.8945.2-29.41330.01529.22068.91973.24860.23115.3597.43707.16038.74417.26849.37502.04558.02837.94393.26250.54637.56306.18812.22884.92338.72119.9
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:FinancialAdvisorySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-19.743463422-50.74639-26.76-7.0533.78-11.819-8.676-43.453178.822192616-53.396-0.159-16.10411-9.806-19.03411-34.133-31.331-29.14.5475.9133.07412-18.334-12.4333.33414-21.08319-3.152-38.4968.436
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-1458.15485.13241.41670.4-2103.9986.6-675.4-175.899.5-225.1-286.4-2032.4640.1391.91211.51626.31023.7-3411.9-14.1-1378.8855.6-518.0-1727.2865.7-3674.2-2027.9-2341.1394.4416.7348.5902.5-1363.1-1099.3236.51951.7-1229.3889.7-94.5-1126.3193.4

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value29-17.342412924-39.763-5.027-16.636-3.1284.961-13.455-6.864-34.3761329161817-78.1350.942-15.4581218-17.176-1.855-32.728-48.584-24.704-0.5626.645-4.61813-16.155-14.374
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating2270.5-1280.84844.22751.41827.6-1648.5-125.3-419.9-77.9130.6-256.3-226.6-1607.9494.21295.2988.61175.51059.4-4992.783.5-1323.5931.8959.8-1558.6-136.2-3522.9-3144.6-1987.4-48.7468.3-523.61016.6-1201.1-1270.9

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-0.0192.401-5.48-5.1892.10610-44.611103.9251.181-1.6361.8129.077-3.95220-3.634-7.2530.591-24.7391.1010.6461.045271.858-13.6461.405-17.253
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.1-13.8-13.2-17.88.6-27.6887.4-60.9-125.523.812.2-26.4-26.4-29.569.7-22.6-38.33.431.7116.9-4.28.2154.0-10.8735.6-4.335.5
Percentage of InterestIncomeOperating-1.5177.3-640.9-490.0157.2455.3-1111.9255.597.831.1-31.259.8424.6-145.8903.2-222.9-450.835.7-1580.897.655.376.21477.8168.6-1001.9151.2-1116.7
Percentage of InterestIncomeOperating us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value29-19.743463422-50.74639-26.76-7.0533.78-11.819-8.676-43.453178.822192616-53.396-0.159-16.10411-9.806-19.03411-34.133-31.331
Percentage of OtherComprehensiveIncomeLossNetOfTax100.1113.8113.2117.891.4127.6-787.4160.9225.576.287.8126.4126.4129.530.3122.6138.396.668.3-16.9104.291.8-54.0110.8-635.6104.364.5
Percentage of InterestIncomeOperating2272.0-1458.15485.13241.41670.4-2103.9986.6-675.4-175.899.5-225.1-286.4-2032.4640.1391.91211.51626.31023.7-3411.9-14.1-1378.8855.6-518.0-1727.2865.7-3674.2-2027.9
Percentage of InterestIncomeOperating us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value29-17.343412924-39.764-5.027-16.637-3.1264.96-13.453-6.866-34.3751329161817-78.1340.942-15.4581218-17.176-1.855-32.728-48.583-24.704-0.5386.621-4.96113-16.312-14.217
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.095.799.6107.4100.0101.098.9
Percentage of InterestIncomeOperating2270.5-1280.94844.12751.31827.7-1648.6-125.3-419.9-77.9130.5-256.2-226.7-1607.8494.21295.2988.51175.51059.4-4992.683.5-1323.5931.8959.8-1558.6-136.2-3522.9-3144.5-1987.4-46.7466.6-562.51016.6-1212.8-1257.0
Percentage of InterestIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-12-31
Value-0.0010.0010.0010.001-0.0010.0010.001-0.0020.001-0.0020.002-0.0010.0-0.0010.002-0.002
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.0-0.00.00.0-0.0-0.0-0.00.10.00.0-0.00.00.0-0.00.00.0
Percentage of InterestIncomeOperating-0.10.10.10.1-0.10.00.0-0.00.0-0.00.1-0.00.0-0.00.1-0.1
Percentage of InterestIncomeOperating us-gaap:AociAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.0010.0010.0010.001-0.0010.0010.001-0.0020.001-0.0020.002-0.001-0.0010.024-0.6090.0570.576-0.157
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.0-0.00.00.0-0.0-0.0-0.00.10.00.0-0.00.0-0.00.413.20.4-3.61.1
Percentage of InterestIncomeOperating-0.10.10.10.1-0.10.00.0-0.00.0-0.00.1-0.0-0.01.7-69.04.242.8-13.9
Percentage of InterestIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value29-17.343412924-39.764-5.027-16.637-3.1264.96-13.453-6.866-34.3751329161817-78.1340.942-15.4581218-17.176-1.855-32.728-48.583-24.704-0.5386.621-5.08313-16.133-14.217
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.095.799.6110.199.699.998.9
Percentage of InterestIncomeOperating2270.5-1280.94844.12751.31827.7-1648.6-125.3-419.9-77.9130.5-256.2-226.7-1607.8494.21295.2988.51175.51059.4-4992.683.5-1323.5931.8959.8-1558.6-136.2-3522.9-3144.5-1987.4-46.7466.6-576.31012.4-1199.5-1257.0
Percentage of InterestIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2033492641-11.142331418282924273122179.87200.05436291412252231251421341513261019222216231112
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating1590.52494.05731.02493.13087.6-461.9831.4370.2689.01254.51794.61503.01688.42017.41974.21495.5719.41092.74.92657.63189.3942.31040.72226.21566.53537.51907.31056.41917.42454.22128.5791.11219.0307.7571.4509.7653.8333.6440.6208.6242.6

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1249019476735879487396113108148161-82.95411112011012811281701553993756217289858552623117-4.106333429-8.1236771591117053-40.894
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9759.16708.022780.17225.25453.42418.41982.31216.51831.92538.82165.43589.56940.15965.4-3685.26838.77514.06676.58242.09983.96966.15154.78206.136278.627544.46743.411184.87234.17450.96020.45985.94658.42373.31560.5-291.24593.91992.01351.4-243.51964.11640.31717.72260.31295.7973.2-800.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.7383.5264.8811.423-0.382-5.6912.5541.4927.736-0.5660.2881.6511.4161.9690.6042.260.5232.8771.0050.0821.0073.9-2.4451.2691.0426.6930.4211.0610.7174.587-0.4212.4660.5682.2891.2590.3723.3413.504-3.334.4349.5624.976116.2638.956-7.36
Percentage of ProfitLoss1.43.92.51.9-0.5-9.83.23.110.5-0.60.31.51.01.2-0.72.00.42.60.80.11.25.5-1.60.30.310.70.21.20.85.4-0.83.91.813.0-30.71.19.812.141.06.613.48.310.48.916.718.0
Percentage of InterestIncomeOperating135.8260.4570.9134.4-28.5-235.963.737.7192.8-14.95.554.566.272.726.8138.732.5173.964.27.386.2284.3-129.2115.276.5720.527.285.462.2323.3-47.7183.142.2202.489.350.8194.8163.0-99.8129.7219.2142.5235.0115.3162.8-144.1
Percentage of InterestIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of ProfitLoss98.696.197.598.1100.5109.896.896.989.5100.699.798.599.098.8100.798.099.697.499.299.998.894.5101.699.799.789.399.898.899.294.6100.896.198.287.0130.798.990.287.959.093.486.691.789.691.183.382.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6
Percentage of InterestIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of ProfitLoss98.696.197.598.1100.5109.896.896.989.5100.699.798.599.098.8100.798.099.697.499.299.998.894.5101.699.799.789.399.898.899.294.6100.896.198.287.0130.798.990.287.959.093.486.691.789.691.183.382.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

laz:FinancialAdvisoryFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value475317511304304297401305328335414309421408334305410
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating37122.023473.559780.528800.722705.912341.210003.57705.88197.78836.97890.610224.219712.115082.114874.118744.225498.8
Percentage of InterestIncomeOperating laz:FinancialAdvisoryFees0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetManagement1


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value346326337265245269304287296292281312335338327301293
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.9102.966.087.180.690.475.994.190.287.168.0101.079.782.797.798.871.6
Percentage of InterestIncomeOperating27067.624147.039455.925076.718305.311161.67594.77247.37390.57695.75364.210326.515710.512475.914528.118510.418264.7
Percentage of InterestIncomeOperating us-gaap:AssetManagement10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

laz:IncentiveFees, laz:AssetManagementSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3432523.2790.7491.514141.2635.2750.580.5311.957125.599
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.210.410.31.10.20.53.50.41.60.20.10.62.91.4
Percentage of InterestIncomeOperating2678.62435.56138.6309.655.962.8352.931.9131.415.310.164.6581.3206.6
Percentage of InterestIncomeOperating laz:IncentiveFees laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:ManagementFeesAndOther, laz:AssetManagementSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value330314300273254281305298310301299323340348
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.799.058.889.883.594.476.297.994.389.772.2104.480.785.3
Percentage of InterestIncomeOperating25857.023228.435130.825870.118962.711650.47622.07540.47732.87927.75698.310672.915910.212866.6
Percentage of InterestIncomeOperating laz:ManagementFeesAndOther laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RelatedPartyTransactionsByRelatedParty

laz:AffiliatedFunds


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value186173178131118135148141153144144158170181
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.254.634.943.239.045.737.146.346.642.934.851.240.544.4
Percentage of InterestIncomeOperating14566.112827.020850.612453.78848.75636.63712.23568.03817.53793.92745.75230.37983.26690.4
Percentage of InterestIncomeOperating laz:AffiliatedFunds0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

laz:AssetManagementSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value365347352277254282319300315301299325352354
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.9109.369.090.983.894.979.798.395.989.972.3105.083.786.7
Percentage of InterestIncomeOperating28535.525664.041269.426179.719018.611713.17974.97572.37864.27943.05708.410737.516491.513073.2
Percentage of InterestIncomeOperating laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:FinancialAdvisorySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-09-302013-09-30
Value451318511305304298400305329338413310422409291233
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax95.1100.2100.0100.2100.2100.499.7100.2100.2100.899.9100.2100.2100.10.00.0
Percentage of InterestIncomeOperating35307.823516.459796.028845.422746.712394.99971.97722.98213.68904.57883.810248.219742.215096.723418.317360.2
Percentage of InterestIncomeOperating laz:FinancialAdvisorySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value843679898598592558743611650661704640771768692638729637705621546510604585620593649581582549631500510422580449457506473484500461618477443463
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating65880.050214.5105067.456470.444198.823140.818529.615423.316217.317412.613415.221155.536086.428347.030756.639149.145366.438538.145099.255062.246801.537180.531958.653114.045564.563927.342028.246799.950529.538714.171591.437158.437971.437317.241195.561318.426660.723556.314181.914177.411473.913211.412551.88790.28057.39081.8

Revenues Net Of Interest Expense

us-gaap:RevenuesNetOfInterestExpense

us-gaap:RevenuesNetOfInterestExpense


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value823660878577572538721591630643687626757754678624717623691608534498593573609577633566566533612480490401
Percentage of RevenuesNetOfInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating64307.648752.4102708.154549.442708.422305.717979.614918.415716.216938.813090.220682.835450.827848.630155.838334.944573.037694.344189.553981.245777.436313.331339.152043.444720.462190.441031.745552.049167.037589.969466.035661.036461.335535.2

us-gaap:RevenuesNetOfInterestExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value5.942-5.79514-5.03812-43.4731.318-14.929-14.5133.471-26.353-9.177-16.739-8.7061.618-1.518-3.584.2893.282-2.305-6.411-13.5551.477-21.895-13.13-3.577-11.34-16.845-2.037-10.66
Percentage of RevenuesNetOfInterestExpense0.7-0.91.6-0.92.2-8.10.2-2.5-2.30.5-3.8-1.5-2.2-1.20.2-0.2-0.50.70.5-0.4-1.2-2.70.2-3.8-2.2-0.6-1.8-3.0-0.4-2.0
Percentage of InterestIncomeOperating464.2-428.01642.7-475.7943.1-1802.432.9-376.8-361.691.3-502.0-303.0-782.9-321.371.9-93.1-222.5259.3209.7-204.3-548.9-988.078.0-1986.8-964.0-385.0-734.0-1355.2-176.7-751.2
Percentage of InterestIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenuesNetOfInterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, laz:AssetManagementSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value365347352277254282319300315301299325352354342320309283283267254245260264305279285291288268
Percentage of RevenuesNetOfInterestExpense44.452.640.248.044.552.544.450.850.046.943.651.946.546.950.451.343.245.441.044.047.549.344.046.150.248.445.151.650.850.3
Percentage of InterestIncomeOperating28535.525664.041269.426179.719018.611713.17974.97572.37864.27943.05708.410737.516491.513073.215197.319661.819259.017132.018128.223734.521757.417912.513781.224009.222455.130119.218504.923488.924992.518926.3
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, laz:FinancialAdvisorySegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value451318511305304298400305329338413310422409335305410335404343286266330330316301359291280275
Percentage of RevenuesNetOfInterestExpense54.948.258.252.953.355.655.551.852.352.660.249.555.754.249.449.057.353.958.556.453.753.455.857.751.952.256.751.449.551.6
Percentage of InterestIncomeOperating35307.823516.459796.028845.422746.712394.99971.97722.98213.68904.57883.810248.219742.215096.714886.618766.325536.520303.025851.630451.124568.919388.817479.830021.123229.432456.323260.823418.324351.219414.8
Percentage of InterestIncomeOperating us-gaap:OperatingSegments laz:FinancialAdvisorySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value64066209597154665312509556395551550754994997494446274485492848364769438545564302421540114486414841512827333230423079289830112956292127282986299429772907308131363081315934223147
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value9196169201201
Percentage of Assets15.410.918.424.4
Percentage of Assets15.410.918.424.4
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value235221162159157150101
Percentage of Assets3.73.62.72.93.03.01.8
Percentage of Assets3.73.62.72.93.03.01.8
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value42514153383135773388324436733772382337123409337230402931332933393159298330032923289926983083289028911497195816841627
Percentage of Assets66.466.964.265.463.863.765.167.969.467.568.268.265.765.467.569.066.268.065.968.068.867.368.769.769.652.958.855.954.5
Percentage of Assets66.466.964.265.463.863.765.167.969.467.568.268.265.765.467.569.066.268.065.968.068.867.368.769.769.652.958.855.954.5
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, laz:AssetManagementSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value958893958800781736821703702698728696709686756668624572645620583598640515486579588612
Percentage of Assets15.014.416.114.614.714.514.612.712.812.714.614.115.315.315.313.813.113.114.214.413.814.914.312.411.720.517.720.3
Percentage of Assets15.014.416.114.614.714.514.612.712.812.714.614.115.315.315.313.813.113.114.214.413.814.914.312.411.720.517.720.3
Percentage of Assets us-gaap:OperatingSegments laz:AssetManagementSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, laz:FinancialAdvisorySegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value119611621181108911411114114410759811087859876877866843828985828907757732714763742773751785714
Percentage of Assets18.718.719.819.921.521.920.319.417.819.817.217.719.019.317.117.120.718.919.917.617.417.817.017.918.626.623.623.7
Percentage of Assets18.718.719.819.921.521.920.319.417.819.817.217.719.019.317.117.120.718.919.917.617.417.817.017.918.626.623.623.7
Percentage of Assets us-gaap:OperatingSegments laz:FinancialAdvisorySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementGeographical

srt:Americas


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value31242908255726003015
Percentage of Assets52.351.651.252.866.2
Percentage of Assets52.351.651.252.866.2
Percentage of Assets srt:Americas100.0100.0100.0100.0100.0

srt:AsiaPacific


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value313292288288255
Percentage of Assets5.35.25.85.95.6
Percentage of Assets5.35.25.85.95.6
Percentage of Assets srt:AsiaPacific100.0100.0100.0100.0100.0

us-gaap:EMEA


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value253424372150203912861405
Percentage of Assets42.443.243.041.428.231.3
Percentage of Assets42.443.243.041.428.231.3
Percentage of Assets us-gaap:EMEA100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value48994767497246884628453549584865478947284027382335143428366934673467317232623001301127883119293632822290256224052512234223812299232921512335216121512047221522182223231826262624
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets76.576.883.385.887.189.087.987.687.086.080.677.375.976.574.571.772.772.371.669.871.469.569.570.879.181.076.979.081.680.879.177.879.778.878.272.272.270.471.970.772.273.476.783.4

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.9836.0233.8621.971
Percentage of Liabilities0.20.10.10.1
Percentage of Assets0.10.10.10.0
Percentage of Assets srt:ParentCompany0.91.00.40.2

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value100.5360.5951.20.9150.9540.575
Percentage of Liabilities0.20.00.00.00.00.00.0
Percentage of Assets0.20.00.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary4.50.20.40.80.60.60.6

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value64066209597154665312509556395551550754994997494446274485492848364769438545564302421540114486414841512827333230423079289830112956292127282986299429772907308131363081315934223147
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value9196169201201
Percentage of LiabilitiesAndStockholdersEquity15.410.918.424.4
Percentage of Assets15.410.918.424.4
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value826765911693600486609613618701916106710559961199130712431153123512431146116513131154810473706572500485560582518496569713704738726773710693652355
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.912.315.312.711.39.510.811.011.212.818.321.622.822.224.327.026.126.327.128.927.229.029.327.819.516.721.218.816.216.818.619.717.718.219.123.823.725.423.624.723.122.019.111.3

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value9116099161199
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets15.310.818.324.3
Percentage of Assets srt:ParentCompany99.199.099.699.8

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value979974138911098967931231959919101112461132845962148312549558911158853646701113285970160610668206846668416886015868508327517651003989984101512098477977049179091055
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.315.723.320.316.915.621.817.316.718.424.922.918.321.530.125.920.020.325.419.815.317.525.220.716.921.432.027.022.223.027.923.320.621.528.527.825.226.332.631.631.932.235.30.00.00.029.10.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.4532.7344.1363.9213.9165.904
Percentage of CashAndCashEquivalentsAtCarryingValue0.00.20.30.30.30.5
Percentage of Assets0.00.00.10.10.10.1
Percentage of Assets srt:ParentCompany0.00.40.40.30.00.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4.5152.4253.5583.8483.8764.6373.826
Percentage of CashAndCashEquivalentsAtCarryingValue0.50.20.30.30.40.60.3
Percentage of Assets0.10.00.10.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary1.91.12.22.42.53.13.8

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1389123112461483115811321066841850
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.321.824.930.125.425.232.027.928.5
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value660649660631610590587569557552552546541543523515507502495493484486472471469455478484507505502494474466450489459435401
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.310.511.111.611.511.610.410.310.110.011.111.011.712.110.610.710.611.510.911.511.512.110.511.411.316.114.415.916.517.516.716.716.217.115.116.315.414.111.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

laz:FurnitureAndEquipment


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value24323924023121821321520520520320419919318818317918218017216716316316015615315015015115215114914613513112211885
Percentage of PropertyPlantAndEquipmentGross36.836.836.536.735.936.236.636.236.936.937.036.535.734.735.134.936.035.934.834.033.833.734.033.232.633.131.431.230.029.929.829.628.628.327.124.119.6
Percentage of Assets3.83.94.04.24.14.23.83.73.73.74.14.04.24.23.73.73.84.13.83.93.94.13.63.83.75.34.55.04.95.25.05.04.64.84.13.92.8
Percentage of Assets laz:FurnitureAndEquipment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Building


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value150148155148141138142137144142145146147156151149144134132140139143137141140135152158172173173170165161166163158164168
Percentage of PropertyPlantAndEquipmentGross22.822.923.523.523.223.524.224.225.925.826.226.827.328.729.029.028.526.826.828.528.929.529.029.930.029.831.932.733.934.334.634.534.834.736.933.434.637.742.0
Percentage of Assets2.32.42.62.72.72.72.52.52.62.62.93.03.23.53.13.13.03.12.93.33.33.63.13.43.44.84.65.25.66.05.85.85.75.95.65.55.35.34.9
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value464142235241323119181411132014117.527101418139.5887.0996.4566.9235.9947.5785.2365.6964.493.7564.1281619182525261.58
Percentage of PropertyPlantAndEquipmentGross7.06.46.53.78.57.05.55.63.43.42.62.12.53.72.82.31.52.12.83.72.82.01.51.41.51.31.61.11.10.90.70.83.54.14.25.35.46.10.4
Percentage of Assets0.70.70.70.41.00.80.60.60.30.30.30.20.30.50.30.20.20.20.30.40.30.20.20.20.20.20.20.20.20.20.10.10.60.70.60.90.80.90.0
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value221220220227197196197193188187188188186178173174172177175167167169167167168162167169177176175173156153143182159156
Percentage of PropertyPlantAndEquipmentGross33.433.933.536.132.333.333.634.033.834.034.234.634.532.933.133.834.135.335.533.934.634.835.535.535.835.835.035.035.034.934.935.133.132.931.837.236.638.9
Percentage of Assets3.53.53.74.23.73.93.53.53.43.43.83.84.04.03.53.63.64.03.93.94.04.23.74.04.15.85.05.65.86.15.85.95.45.64.86.15.24.6
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value408398402398381370367352351342339331325329317314307296286289282279265261255245256257270262253244232226225272261265266268272264250239
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.46.46.77.37.27.36.56.36.46.26.86.77.07.36.46.56.46.86.36.76.77.05.96.36.28.77.78.58.89.18.48.38.08.37.69.18.89.18.78.68.88.47.37.6

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0150.0150.4360.4580.4550.4460.2831.0950.4310.4310.4830.8560.8630.8330.4970.7840.8220.8290.7130.8350.330.6442.420.5111.8571.0330.4414.020.7061.227.3560.8771.0040.8772.1872.4942.561.1187.0191.7161.7061.4742.6091.7191.7691.77
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value252250257233228220219216206209212214216213205200200206209204201206207209213209222227236242248249241239225216198190168150153153150166
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.94.04.34.34.34.33.93.93.73.84.34.34.74.84.24.24.24.74.64.74.85.24.65.15.17.46.77.57.78.48.38.48.38.87.57.26.76.55.54.85.04.94.45.3

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value380381383373368355371366371372371374377383385385381379373346322327320316326324335343352349345350348365364364360360356350320316313267254261170
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.96.16.46.86.97.06.66.66.76.87.47.68.28.57.88.08.08.78.28.07.78.27.17.67.911.510.111.311.412.111.511.911.913.412.212.212.112.411.611.210.410.09.20.00.08.30.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

laz:AssetManagementSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value646464646464646464646464646464646464646464646464646464646464646464646461
Percentage of Goodwill17.016.916.817.317.518.117.417.617.417.317.417.217.116.816.816.716.917.017.318.720.020.118.818.318.518.718.418.517.717.717.717.917.918.118.419.7
Percentage of Assets1.01.01.11.21.21.31.11.21.21.21.31.31.41.41.31.31.41.51.41.51.51.42.12.12.22.12.22.22.42.22.22.22.22.12.11.8
Percentage of Assets laz:AssetManagementSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:FinancialAdvisorySegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value316317319308303291307302306307307310312318320320317315308281258256279287285280286284301299300296296292286251
Percentage of Goodwill83.083.183.282.782.581.982.682.482.682.782.682.882.983.283.283.383.183.082.781.380.079.981.281.781.581.381.681.582.382.382.382.182.181.981.680.3
Percentage of Assets4.95.15.35.65.75.75.45.45.65.66.16.36.87.16.56.66.77.26.86.56.15.79.29.39.89.39.79.711.010.010.010.010.29.59.17.4
Percentage of Assets laz:FinancialAdvisorySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.039.50.00.039.30.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value180000.0195000.0210000.0646000.0
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value380381384373369357373368374375375379382388391392389387382353328332326325335335347356368366363376375392
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.96.26.46.86.97.06.66.66.86.87.57.78.38.77.98.18.28.88.48.27.88.37.37.98.111.910.411.712.012.712.112.712.813.2

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5375835926401066111929
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.010.311.913.023.425.00.9

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value479492513517525533551558477489500
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.57.98.69.59.910.59.810.18.78.90.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value410452307329357404257313319333258304308351228222243248184212228248226250264331266295316342259303322328268297307323272325262282265248
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.47.35.16.06.77.94.65.65.86.15.26.26.77.84.64.65.15.74.04.95.46.25.06.06.411.78.09.710.311.88.610.311.012.09.09.910.311.18.810.48.58.97.87.9

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value0.0290.0080.019
Percentage of OtherAssets0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.8360.7670.40.3970.4720.4620.245
Percentage of OtherAssets0.20.20.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.40.30.20.20.30.30.2

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value13913813012399109101
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.32.52.62.52.22.43.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1683168316821681168016801679167816781759143414331191119011901189118911891188990990989989
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.327.128.230.831.633.029.830.230.532.028.729.025.726.624.224.624.927.126.123.023.524.722.1

us-gaap:LongTermDebt us-gaap:DebtInstrument

laz:LazardGroupFourPointFiveZeroPercentSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value493493493492492492492491491491491491
Percentage of LongTermDebt29.329.329.329.329.329.329.329.329.327.934.234.2
Percentage of Assets7.77.98.39.09.39.78.78.98.98.99.89.9
Percentage of Assets laz:LazardGroupFourPointFiveZeroPercentSeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.0

laz:LazardGroupFourPointThreeSevenFivePercentSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value494493493493493492492492492491
Percentage of LongTermDebt29.329.329.329.329.329.329.329.329.328.0
Percentage of Assets7.78.08.39.09.39.78.78.98.98.9
Percentage of Assets laz:LazardGroupFourPointThreeSevenFivePercentSeniorNotes0.00.00.00.00.00.00.00.00.00.0

laz:LazardGroupThreePointSevenFivePercentSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value398398398397397397397397397397397396396396396396396396396396395395395
Percentage of LongTermDebt23.723.723.723.723.723.723.723.723.722.627.727.733.333.333.333.333.333.333.340.040.040.040.0
Percentage of Assets6.26.46.77.37.57.87.07.27.27.27.98.08.68.88.08.28.39.08.79.29.49.98.8
Percentage of Assets laz:LazardGroupThreePointSevenFivePercentSeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:LazardGroupThreePointSixTwoFivePercentSeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value297297297297297297297297296296296296296296296296296296296
Percentage of LongTermDebt17.717.717.717.717.717.717.717.717.716.920.720.724.924.924.924.924.924.924.9
Percentage of Assets4.64.85.05.45.65.85.35.45.45.45.96.06.46.66.06.16.26.86.5
Percentage of Assets laz:LazardGroupThreePointSixTwoFivePercentSeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value19541838142912301204993
Percentage of LongTermDebt116.1109.599.7103.3101.3100.5
Percentage of Assets32.732.628.625.026.422.2
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value16821679143411901188989
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets28.229.828.724.226.122.1
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value19541838142912301204993
Percentage of LongTermDebt116.1109.599.7103.3101.3100.5
Percentage of Assets32.732.628.625.026.422.2
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FinancialInstrument

us-gaap:SeniorDebtObligations


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value168316821681168016801679167816781759143414331191119011901189118911891188990989
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.128.230.831.633.029.830.230.532.028.729.025.726.624.224.624.927.126.123.022.1
Percentage of Assets us-gaap:SeniorDebtObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1.3352.2021.0412.5822.9210.9633.5111.9982.7170.9525.5716.4817.1849.529.4074.2818.9668.8019.1689.37710101129
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.10.00.10.00.00.00.10.10.20.20.20.10.20.20.20.20.20.30.20.9

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value104101878483737172997053545759596059605757585753575964636566696974748081119121122140144147146143167
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.61.51.61.61.41.31.31.81.31.11.11.31.31.21.31.31.41.31.31.41.41.21.41.42.31.92.12.22.42.32.52.53.02.74.04.14.24.64.64.84.64.25.3

us-gaap:MinorityInterest dei:LegalEntity

laz:Edgewater


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value464545444347505252515253575958605959575757565356586362646566667171757582868791105115111
Percentage of MinorityInterest44.145.051.752.052.864.770.171.952.673.699.099.099.099.199.199.099.099.099.098.898.898.798.798.798.898.998.898.998.895.895.595.795.893.291.968.970.771.165.272.978.677.4
Percentage of Assets0.70.70.80.80.80.90.90.90.90.91.11.11.21.31.21.21.21.41.31.31.41.41.21.41.42.21.92.12.12.32.22.42.42.72.52.82.93.03.03.43.83.3
Percentage of Assets laz:Edgewater0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:LGAC


Minority
Period End2021-06-302021-03-31
Value1.7582.997
Percentage of MinorityInterest1.72.9
Percentage of Assets0.00.0
Percentage of Assets laz:LGAC0.00.0

laz:OtherEntity


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.020.0180.0160.0150.0130.0130.0140.0150.0130.0130.5470.5580.5560.5580.5340.5830.5820.5770.5880.7180.7180.7180.7190.720.7190.7180.7290.582
Percentage of MinorityInterest0.00.00.00.00.00.00.00.00.00.01.01.01.00.90.91.01.01.01.01.21.21.31.31.31.21.11.20.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets laz:OtherEntity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:AwardType

laz:ProfitsInterestParticipationRights


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.1972.3111.7762.5933.43.4283.1777.34335180.535
Percentage of MinorityInterest4.02.32.03.14.14.74.410.135.626.41.0
Percentage of Assets0.10.00.00.00.10.10.10.10.60.30.0
Percentage of Assets laz:ProfitsInterestParticipationRights0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value52504038352218
Percentage of MinorityInterest50.249.746.245.043.130.625.5
Percentage of Assets0.80.80.70.70.70.40.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary22.422.924.923.922.914.917.9

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value74
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets1.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value68
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets1.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value65
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets1.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value59
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets1.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value377
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets6.3

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value567582606609618623644652555568580
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.99.410.211.211.612.211.411.810.110.30.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value736
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets12.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value129
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets2.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value826765911693600486609613618701916106710559961199130712431153123512431146116513131154810473706572500485560582518496569713704738726773710693652355
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.912.315.312.711.39.510.811.011.212.818.321.622.822.224.327.026.126.327.128.927.229.029.327.819.516.721.218.816.216.818.619.717.718.219.123.823.725.423.624.723.122.019.111.3

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value9116099161199
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets15.310.818.324.3
Percentage of Assets srt:ParentCompany99.199.099.699.8

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value9318669997786835596816867177719701121111310561258136813021213129313011204122213671211869537770637566555629657592577651833826860866917857840796635584568523311123
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.514.016.714.212.911.012.112.413.014.019.422.724.123.525.528.327.327.728.430.228.630.530.529.220.919.023.121.018.419.220.922.220.321.221.827.827.829.628.129.327.826.623.30.00.00.016.60.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

laz:CommonStockHeldBySubsidiary


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-353.718-259.319-281.813-282.983-283.899-300.459-332.079-949.62-872.755-738.899-756.884-516.267-437.031-410.591-437.53-384.067-319.755-261.583-273.506-203.736-185.353-111.504-177.249-177.798-147.2-142.269-261.243-267.117-272.184-188.593-249.213-203.724-195.04-182.387-349.782-226.889-167.382-91.962-104.382-141.593-159.763-97.671-227.95-192.129-132.157-140.581-191.14-321.852-69.296
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-38.0-29.9-28.2-36.3-41.5-53.7-48.7-138.4-121.6-95.8-78.0-46.0-39.3-38.9-34.8-28.1-24.5-21.6-21.1-15.7-15.4-9.1-13.0-14.7-16.9-26.5-33.9-41.9-48.0-33.9-39.6-31.0-32.9-31.6-53.7-27.2-20.3-10.7-12.0-15.4-18.6-11.6-28.6-30.2-22.6-24.7-36.5-103.2-56.3
Percentage of Assets-5.5-4.2-4.7-5.2-5.3-5.9-5.9-17.1-15.8-13.4-15.1-10.4-9.4-9.2-8.9-7.9-6.7-6.0-6.0-4.7-4.4-2.8-4.0-4.3-3.5-5.0-7.8-8.8-8.8-6.5-8.3-6.9-6.7-6.7-11.7-7.6-5.6-3.2-3.4-4.5-5.2-3.1-6.70.00.00.0-6.10.00.0
Percentage of Assets laz:CommonStockHeldBySubsidiary0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value-168.262-168.243-170.644-165.164-159.975-162.081-173.064-128.453-138.577-142.502-143.683-142.047-143.859-152.936-148.984-169.316-165.682-158.429-159.02-134.281-135.382-136.028-137.073-154.665
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-18.1-19.4-17.1-21.2-23.4-29.0-25.4-18.7-19.3-18.5-14.8-12.7-12.9-14.5-11.8-12.4-12.7-13.1-12.3-10.3-11.2-11.1-10.0-20.1
Percentage of Assets-2.6-2.7-2.9-3.0-3.0-3.2-3.1-2.3-2.5-2.6-2.9-2.9-3.1-3.4-3.0-3.5-3.5-3.6-3.5-3.1-3.2-3.4-3.1-4.6
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value-58.386-87.467-67.724-114.622-148.948-171.332-120.586-160.17-133.41-126.357-130.137-118.318-109.642-66.189-83.535-92.357-112.105-138.272-155.204-101.808-101.649-85.545-97.284-46.102
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-6.3-10.1-6.8-14.7-21.8-30.6-17.7-23.3-18.6-16.4-13.4-10.5-9.9-6.3-6.6-6.7-8.6-11.4-12.0-7.8-8.4-7.0-7.1-6.0
Percentage of Assets-0.9-1.4-1.1-2.1-2.8-3.4-2.1-2.9-2.4-2.3-2.6-2.4-2.4-1.5-1.7-1.9-2.4-3.2-3.4-2.4-2.4-2.1-2.2-1.4
Percentage of Assets us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-226.648-255.711-238.368-279.785-308.921-333.412-293.648-288.621-271.984-268.858-273.818-260.365-253.499-219.124-232.518-261.673-277.785-296.699-314.222-236.088-237.03-221.572-234.356-252.525-235.349-233.494-200.766-152.184-127.48-126.383-133.004-127.852-141.489-124.758-110.541-81.408-94.171-71.903-88.364-57.712-17.827-26.567-46.158-70.519-117.794-75.173-57.048-79.43523
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-24.3-29.5-23.9-35.9-45.2-59.6-43.1-42.1-37.9-34.9-28.2-23.2-22.8-20.7-18.5-19.1-21.3-24.5-24.3-18.1-19.7-18.1-17.1-20.8-27.1-43.5-26.1-23.9-22.5-22.7-21.1-19.5-23.9-21.6-17.0-9.8-11.4-8.4-10.2-6.3-2.1-3.2-5.8-11.1-20.1-13.2-10.9-25.519.3
Percentage of Assets-3.5-4.1-4.0-5.1-5.8-6.5-5.2-5.2-4.9-4.9-5.5-5.3-5.5-4.9-4.7-5.4-5.8-6.8-6.9-5.5-5.6-5.5-5.2-6.1-5.7-8.3-6.0-5.0-4.1-4.4-4.4-4.3-4.8-4.6-3.7-2.7-3.2-2.5-2.9-1.8-0.6-0.8-1.30.00.00.0-1.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value58135955241682582535750701652619788732673608688623569526600569527509702657612556737693659605846750700638659685642612758666643606549429-119.038
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest6.213.612.27.66.099.481.169.577.462.658.658.662.653.651.750.153.247.947.343.043.947.060.794.891.3103.1108.2100.2117.1105.6111.3104.9129.990.084.774.276.074.774.972.895.3104.8110.1106.6105.1137.8-96.7
Percentage of Assets0.92.31.71.00.712.310.69.715.014.214.113.816.015.214.113.915.114.513.513.113.413.712.718.021.121.619.919.224.523.522.622.228.325.123.522.021.421.920.819.422.20.00.00.017.50.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociAttributableToNoncontrollingInterest


Stockholders
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value0.001-0.001-0.002-0.001-0.002-0.002-0.003-0.001-0.002-0.002-0.001-0.001-0.002-0.002-0.002-0.001-0.001-0.001-0.001-0.001
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AociAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value-226.648-255.71-238.368-279.786-308.923-333.413-293.65-288.623-271.987-268.859-273.82-260.365-253.501-219.125-232.519-261.673-277.787-296.701-314.224-236.089-237.031-221.573-234.357-200.767
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-24.3-29.5-23.9-35.9-45.2-59.6-43.1-42.1-37.9-34.9-28.2-23.2-22.8-20.7-18.5-19.1-21.3-24.5-24.3-18.1-19.7-18.1-17.1-26.1
Percentage of Assets-3.5-4.1-4.0-5.1-5.8-6.5-5.2-5.2-4.9-4.9-5.5-5.3-5.5-4.9-4.7-5.4-5.8-6.8-6.9-5.5-5.6-5.5-5.2-6.0
Percentage of Assets us-gaap:AociIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1.1281.1281.1281.1281.1281.1281.1281.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2981.2911.2911.291.291.2821.2821.2321.2321.2311.231.2291.2041.1971.1971.1661.1281.0140.9220.7630.517
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.20.20.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.10.20.20.20.20.20.20.4
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1041018784837371729970535457595960596057575857535759646365666969747480811191211221401441471461431471541711676138
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest11.311.78.810.912.213.110.510.613.89.15.54.95.25.64.74.44.65.04.54.54.84.73.94.76.812.08.210.211.812.611.111.312.513.912.614.414.814.216.215.817.217.518.123.226.430.132.119.631.4
Percentage of Assets1.61.61.51.61.61.41.31.31.81.31.11.11.31.31.21.31.31.41.31.31.41.41.21.41.42.31.92.12.22.42.32.52.53.02.74.04.14.24.64.64.84.64.20.00.00.05.30.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value82676591169360048660961361870191610671055996119913071243115312351243114611651313115481047370657250048556058251849656971370473872677371069365248843039735525084
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest88.788.391.289.187.886.989.589.486.290.994.595.194.894.495.395.695.495.095.595.595.295.396.195.393.288.091.889.888.287.488.988.787.586.187.485.685.285.883.884.282.882.581.976.873.669.967.980.468.6
Percentage of Assets12.912.315.312.711.39.510.811.011.212.818.321.622.822.224.327.026.126.327.128.927.229.029.327.819.516.721.218.816.216.818.619.717.718.219.123.823.725.423.624.723.122.019.10.00.00.011.30.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value134812781295116011401119119311681179117111951140109210051080121911661101113410589989701123101466433846433328524220321919319718227026426225828524420416683356.1652221248
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest144.7147.6129.6149.0166.7200.0175.1170.3164.4151.9123.2101.798.195.285.889.189.590.887.781.382.979.482.283.776.462.960.352.350.443.732.333.432.834.228.032.432.030.429.831.128.524.420.913.16.11.110.171.0201.9
Percentage of Assets21.020.621.721.221.522.021.221.021.421.323.923.123.622.421.925.224.425.124.924.623.724.225.024.416.012.013.911.09.38.46.77.46.67.26.19.08.99.08.49.17.96.54.90.00.00.01.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1128000.01128000.01128000.01128000.01128000.01128000.01128000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.01298000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value1128000.01128000.01298000.01298000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.10.20.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value58135955241682582535750701652619788732673608688623569526600569527509702
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.92.31.71.00.712.310.69.715.014.214.113.816.015.214.113.915.114.513.513.113.413.712.718.021.1

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value13541750788
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0
Percentage of Assets2.30.715.016.0
Percentage of Assets srt:ParentCompany14.76.781.565.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value134812781295116011401119119311681179117111951140109210051080121911661101113410589989701123101466433846433328524220321919319718227026426225828524420416652
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.020.621.721.221.522.021.221.021.421.323.923.123.622.421.925.224.425.124.924.623.724.225.024.416.012.013.911.09.38.46.77.46.67.26.19.08.99.08.49.17.96.54.91.7

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value1295119311951080
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets21.721.223.921.9
Percentage of Assets srt:ParentCompany140.8193.8129.989.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-226.648-255.711-238.368-279.785-308.921-333.412-293.648-288.621-271.984-268.858-273.818-260.365-253.499-219.124-232.518-261.673-277.785-296.699-314.222-236.088-237.03-221.572-234.356-252.525-235.349-233.494-200.766-152.184-127.48-126.383-133.004-127.852-141.489-124.758-110.541-81.408-94.171-71.903-88.364-57.712-17.827-26.567-46.158-57.048
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.5-4.1-4.0-5.1-5.8-6.5-5.2-5.2-4.9-4.9-5.5-5.3-5.5-4.9-4.7-5.4-5.8-6.8-6.9-5.5-5.6-5.5-5.2-6.1-5.7-8.3-6.0-5.0-4.1-4.4-4.4-4.3-4.8-4.6-3.7-2.7-3.2-2.5-2.9-1.8-0.6-0.8-1.3-1.8

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value-238.368-293.648-273.818-232.518
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-4.0-5.2-5.5-4.7
Percentage of Assets srt:ParentCompany-25.9-47.7-29.7-19.3

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value104101878483737172997053545759596059605757585753575964636566696974748081119121122140144147146143167
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.61.51.61.61.41.31.31.81.31.11.11.31.31.21.31.31.41.31.31.41.41.21.41.42.31.92.12.22.42.32.52.53.02.74.04.14.24.64.64.84.64.25.3

us-gaap:MinorityInterest dei:LegalEntity

laz:Edgewater


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value464545444347505252515253575958605959575757565356586362646566667171757582868791105115111
Percentage of MinorityInterest44.145.051.752.052.864.770.171.952.673.699.099.099.099.199.199.099.099.099.098.898.898.798.798.798.898.998.898.998.895.895.595.795.893.291.968.970.771.165.272.978.677.4
Percentage of Assets0.70.70.80.80.80.90.90.90.90.91.11.11.21.31.21.21.21.41.31.31.41.41.21.41.42.21.92.12.12.32.22.42.42.72.52.82.93.03.03.43.83.3
Percentage of Assets laz:Edgewater0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:LGAC


Minority
Period End2021-06-302021-03-31
Value1.7582.997
Percentage of MinorityInterest1.72.9
Percentage of Assets0.00.0
Percentage of Assets laz:LGAC0.00.0

laz:OtherEntity


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value0.020.0180.0160.0150.0130.0130.0140.0150.0130.0130.5470.5580.5560.5580.5340.5830.5820.5770.5880.7180.7180.7180.7190.720.7190.7180.7290.582
Percentage of MinorityInterest0.00.00.00.00.00.00.00.00.00.01.01.01.00.90.91.01.01.01.01.21.21.31.31.31.21.11.20.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets laz:OtherEntity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:AwardType

laz:ProfitsInterestParticipationRights


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.1972.3111.7762.5933.43.4283.1777.34335180.535
Percentage of MinorityInterest4.02.32.03.14.14.74.410.135.626.41.0
Percentage of Assets0.10.00.00.00.10.10.10.10.60.30.0
Percentage of Assets laz:ProfitsInterestParticipationRights0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value52504038352218
Percentage of MinorityInterest50.249.746.245.043.130.625.5
Percentage of Assets0.80.80.70.70.70.40.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary22.422.924.923.922.914.917.9

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value756838396872276576844948878252578577485760945152447747465160525557709067668663585893554751150
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value726537396770279558664948878252578577485760945152447747465160525457699764638160555687584859120
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue95.296.699.099.098.398.0102.7146.077.278.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.699.599.599.5100.398.8108.294.995.094.995.195.095.594.0105.1101.8115.580.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.6182.2850.3790.3791.1581.411-0.728-29.97317180.3330.2870.303-0.1440.844-7.4333.4193.2924.4283.092.9642.6635.609-2.839-0.87-8.04230
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue4.83.41.01.01.72.0-2.7-46.022.821.80.50.50.5-0.31.2-8.25.15.05.14.95.04.56.0-5.1-1.8-15.520.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value726537396770279558664948878252578577485760945152447747465160525457699764638160555687584859120
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue95.296.699.099.098.398.0102.7146.077.278.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.699.599.599.5100.398.8108.294.995.094.995.195.095.594.0105.1101.8115.580.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.4011.020.6080.0360.4081.3863.7751.1026.9991.5045.1353.0931.4512.1341.3160.7421.0011.1450.2580.2840.3310.9223.2166.0995.7843.8462.611.5423.9284.6642.617103.177-10.579233.707105.0522.002159.8194.4173.074
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.4011.020.6080.0360.4081.3863.7751.1026.9991.5045.1353.0931.4512.1341.3160.7421.0011.1450.2580.2840.3310.9223.2166.0995.7843.8462.611.5423.9284.6642.617103.177-10.579233.707105.0522.002159.8194.4173.074
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value138-123.34320255155-155.976359235243-161.251407226103-38.70932333235815486-73.085242205116-82.20711626684-69.686122138139-230.847
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating10813.8-9109.337488.324146.411617.3-6466.78961.75952.76075.7-4243.47763.47483.84840.3-1428.414379.720420.740683.711455.86441.9-6462.017168.928013.26804.4-3823.63482.77804.41938.0-1995.62477.92542.32535.2-4520.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-9.898-6.87-28.88-9.297-12.82-11.942-1.677-22.592-12.178-5.801-8.231-7.262-15.789-14.927-11.74-5.965-6.052-12.893-9.041-26.567-15.369-22.676-21.649-25.239-28.353-11.447-3.567-1.91298142177
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 InterestIncomeOperating-773.3-507.4-3377.8-877.9-956.7-495.1-41.8-570.2-303.5-152.7-156.8-239.7-738.5-550.8-521.5-366.0-686.2-957.2-672.2-2349.0-1090.0-3093.6-1262.3-1173.9-849.9-334.9-81.8-54.76054.4262.1399.61508.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-43.704244-162.933-70.461-3.779-310.178-255.383-101.399-180.8493-270.42310327-586.788165-168.693-213.192-66.598-58.75-148.532-215.804-108.508-100.254-138.654-67.625-230.252-122.546-131.936-52.111-122.042-56.033-47.7
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-3414.418059.0-19056.5-6653.5-282.0-12859.8-6365.5-2559.3-4506.42462.4-5150.93417.11291.0-21652.77350.1-10349.3-24171.4-4944.2-4368.0-13132.8-15305.2-14803.3-5845.7-6449.0-2027.1-6736.5-2808.8-3778.2-1057.0-2247.6-1018.8-934.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value10135224252177-539.9471662871-103.2210530319-591.018512195
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating7938.02592.626211.123801.413212.9-22385.94162.3708.41790.1-2716.32012.110014.3894.8-21808.822787.311977.7

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1329167.27111131-13.8362.9614.462186.488146.39845010221714241311-44.126138-821.0-9.1125.7857.569
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value9.5779.3619.3798.4028.3288.986108.618.0618.1868.88.6278.4428.2348.2897.8387.7097.6628.6787.9568.2418.3898.5348.3518.0247.8768.1328.6768.7978.8599.2858.8728.5348.0598.3837.6727.8256.975
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value138-123.34320255155-155.976359235243-161.251407226103-38.70932333235815486-73.085242205116-82.20711626684-69.686122138139-230.847
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating10813.8-9109.337488.324146.411617.3-6466.78961.75952.76075.7-4243.47763.47483.84840.3-1428.414379.720420.740683.711455.86441.9-6462.017168.928013.26804.4-3823.63482.77804.41938.0-1995.62477.92542.32535.2-4520.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1249019476735879487396113108148161-82.95411112011012811281701553993756217289858552623117-4.106333429-8.1236771591117053-40.894
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating9759.16708.022780.17225.25453.42418.41982.31216.51831.92538.82165.43589.56940.15965.4-3685.26838.77514.06676.58242.09983.96966.15154.78206.136278.627544.46743.411184.87234.17450.96020.45985.94658.42373.31560.5-291.24593.91992.01351.4-243.51964.11640.31717.72260.31295.7973.2-800.7

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.7383.5264.8811.423-0.382-5.6912.5541.4927.736-0.5660.2881.6511.4161.9690.6042.260.5232.8771.0050.0821.0073.9-2.4451.2691.0426.6930.4211.0610.7174.587-0.4212.4660.5682.2891.2590.3723.3413.504-3.334.4349.5624.976116.2638.956-7.36
Percentage of ProfitLoss1.43.92.51.9-0.5-9.83.23.110.5-0.60.31.51.01.2-0.72.00.42.60.80.11.25.5-1.60.30.310.70.21.20.85.4-0.83.91.813.0-30.71.19.812.141.06.613.48.310.48.916.718.0
Percentage of InterestIncomeOperating135.8260.4570.9134.4-28.5-235.963.737.7192.8-14.95.554.566.272.726.8138.732.5173.964.27.386.2284.3-129.2115.276.5720.527.285.462.2323.3-47.7183.142.2202.489.350.8194.8163.0-99.8129.7219.2142.5235.0115.3162.8-144.1
Percentage of InterestIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of ProfitLoss98.696.197.598.1100.5109.896.896.989.5100.699.798.599.098.8100.798.099.697.499.299.998.894.5101.699.799.789.399.898.899.294.6100.896.198.287.0130.798.990.287.959.093.486.691.789.691.183.382.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6
Percentage of InterestIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1238718975736476466597113107146159-83.55810912010712711280661573983745517288858053603115-5.365333025-4.793626255996444-33.534
Percentage of ProfitLoss98.696.197.598.1100.5109.896.896.989.5100.699.798.599.098.8100.798.099.697.499.299.998.894.5101.699.799.789.399.898.899.294.6100.896.198.287.0130.798.990.287.959.093.486.691.789.691.183.382.0
Percentage of InterestIncomeOperating9623.36447.622209.27090.85481.92654.31918.71178.81639.12553.72159.93535.06873.95892.7-3712.06700.07481.56502.68177.89976.66879.94870.58335.236163.427467.96022.911157.57148.87388.75697.16033.74475.32331.11358.1-380.54543.11797.11188.5-143.71834.41421.11575.22025.41180.3810.4-656.6
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-9.898-6.87-28.88-9.297-12.82-11.942-1.677-22.592-12.178-5.801-8.231-7.262-15.789-14.927-11.74-5.965-6.052-12.893-9.041-26.567-15.369-22.676-21.649-25.239-28.353-11.447-3.567-1.91298142177
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 InterestIncomeOperating-773.3-507.4-3377.8-877.9-956.7-495.1-41.8-570.2-303.5-152.7-156.8-239.7-738.5-550.8-521.5-366.0-686.2-957.2-672.2-2349.0-1090.0-3093.6-1262.3-1173.9-849.9-334.9-81.8-54.76054.4262.1399.61508.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.8727.498309.31312122.08822125.871107.31516126.0555.5613.84716105.6645.4548.155.0419.3834.0558.0238.3312.6773.1536.621212291722222629113.7221.9543.3094.6083.0212.444
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-43.704244-162.933-70.461-3.779-310.178-255.383-101.399-180.8493-270.42310327-586.788165-168.693-213.192-66.598-58.75-148.532-215.804-108.508-100.254-138.654-67.625-230.252-122.546-131.936-52.111-122.042-56.033-47.7
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-3414.418059.0-19056.5-6653.5-282.0-12859.8-6365.5-2559.3-4506.42462.4-5150.93417.11291.0-21652.77350.1-10349.3-24171.4-4944.2-4368.0-13132.8-15305.2-14803.3-5845.7-6449.0-2027.1-6736.5-2808.8-3778.2-1057.0-2247.6-1018.8-934.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-04-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value49494949494849505110351525220249495019246474719443444415836363735603068232324191918181413131210
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1111220.00.00.09564781591922468277145546778106713411183134134820.0503510654272030131708170463293324383210.98
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value24.932.4-7.226.90.2380.3060.0390.080.2770.1940.0160.2160.2580.130.4190.2270.2990.265-0.0270.2440.2810.28154.3730.31.4680.161-0.0190.2090.1320.2030.020.2260.220.1830.0020.2790.2330.232-0.0150.2350.1980.183-0.0570.1150.202
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9777708894701041351048382
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value63566066272911611190134179167133129
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value80867778787768625562586046
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value82767361698910441225123811451165
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AllowanceForDoubtfulAccountsReceivableChargeOffsForeignCurrencyTranslationAndOtherAdjustments

laz:AllowanceForDoubtfulAccountsReceivableChargeOffsForeignCurrencyTranslationAndOtherAdjustments


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.9272.0220.484-1.099-0.2282.8915.1751.7010.3430.7353.4181.924.2671.1410.5532.3834.7480.3752.5122.147-0.2742.1667.5330.4880.551-6.313-8.998-2.1480.252-6.589-0.1341.7650.094-0.36
Percentage of AllowanceForDoubtfulAccountsReceivableChargeOffsForeignCurrencyTranslationAndOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AmortizationAndOtherAcquisitionRelatedBenefitsCosts

laz:AmortizationAndOtherAcquisitionRelatedBenefitsCosts


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.4360.4580.4550.4469.8761.0225.0423.47-2.429-5.851-8.483
Percentage of AmortizationAndOtherAcquisitionRelatedBenefitsCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AmortizationOfAwardedGrantsNetOfForfeitures

laz:AmortizationOfAwardedGrantsNetOfForfeitures


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5130242543261923441718193615161528121618192019211826
Percentage of AmortizationOfAwardedGrantsNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AmortizationOfDeferredExpensesAndSharebasedIncentiveCompensation

laz:AmortizationOfDeferredExpensesAndSharebasedIncentiveCompensation


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value129100636711410148901211047768124100747611692657782117747465106
Percentage of AmortizationOfDeferredExpensesAndSharebasedIncentiveCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AveragePricePerCommonShare

laz:AveragePricePerCommonShare


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.5642.300032.70.17-0.19-0.937.1-7.59-1.08-0.8654.820.85-0.070.343.020.73-0.110.234.29-0.52-0.281.5849.460
Percentage of AveragePricePerCommonShare100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

laz:ChargeToRetainedEarningsPertainingToIssuanceOfRestrictedStockUnitsInConnectionWithParticipationRights us-gaap:AwardType

laz:ChargeToRetainedEarningsPertainingToIssuanceOfRestrictedStockUnitsInConnectionWithParticipationRights

us-gaap:RestrictedStock


Charge
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.4010.430.2340.239
Percentage of ChargeToRetainedEarningsPertainingToIssuanceOfRestrictedStockUnitsInConnectionWithParticipationRights100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Charge
Period End2021-06-302021-03-312020-12-312020-09-30
Value3.7035.4294.1644.206
Percentage of ChargeToRetainedEarningsPertainingToIssuanceOfRestrictedStockUnitsInConnectionWithParticipationRights923.41262.61779.51759.8

laz:CompensationExpenseRelatedToChangeInFairValueOfUnderlyingInvestments

laz:CompensationExpenseRelatedToChangeInFairValueOfUnderlyingInvestments


Compensation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value167.487251123-19.6379.5391.7646.48413-15.7983.647-0.499-1.4365.5454.8755.7537.353-1.3896.9090.312-2.5146.076-12.145-1.8944.1361.322-5.5288.9062.626
Percentage of CompensationExpenseRelatedToChangeInFairValueOfUnderlyingInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:ConsolidatedVariableInterestEntities

laz:ConsolidatedVariableInterestEntities


Consolidated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-0.2647.775-0.6920.933118.4524.1911.22311
Percentage of ConsolidatedVariableInterestEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:ConsolidatedVariableInterestEntities us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Consolidated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-0.2647.775-0.6920.933118.4524.1911.22311
Percentage of ConsolidatedVariableInterestEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:ContributionFromRedeemableNoncontrollingInterestsNet us-gaap:StatementEquityComponents

laz:ContributionFromRedeemableNoncontrollingInterestsNet

laz:RedeemableNoncontrollingInterest


Contribution
Period End2021-06-302021-03-31
Value0.671534
Percentage of ContributionFromRedeemableNoncontrollingInterestsNet100.0100.0

laz:DeferredIncentiveCompensationAwardsGranted us-gaap:SubsequentEventType

laz:DeferredIncentiveCompensationAwardsGranted

us-gaap:SubsequentEvent


Deferred
Period End2021-02-28
Value364
Percentage of DeferredIncentiveCompensationAwardsGranted100.0

laz:DerivativeLiabilityAdjustmentToForfeiture us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilityAdjustmentToForfeiture

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.372.1923.0411.6582.1121.41.8130.5171.3013.195
Percentage of DerivativeLiabilityAdjustmentToForfeiture100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DerivativeLiabilityChangeInFairValue us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilityChangeInFairValue

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value167.4872513-15.7983.647-0.499-1.4365.5454.875
Percentage of DerivativeLiabilityChangeInFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DerivativeLiabilityForeignCurrencyTranslationAndOtherAdjustments us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilityForeignCurrencyTranslationAndOtherAdjustments

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value50000.0-1273000.01890000.0715000.0-372000.0-298000.0-1309000.0204000.0184000.0521000.0
Percentage of DerivativeLiabilityForeignCurrencyTranslationAndOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DerivativeLiabilityForfeited us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilityForfeited

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2828000.02928000.02494000.0314000.0915000.0891000.0738000.0138000.0172000.0714000.0
Percentage of DerivativeLiabilityForfeited100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DerivativeLiabilityGranted us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilityGranted

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.01610.01010.00.1890.6041030.00.0
Percentage of DerivativeLiabilityGranted0.0100.00.0100.00.0100.0100.0100.00.00.0

laz:DerivativeLiabilitySettled us-gaap:DerivativeInstrumentRisk

laz:DerivativeLiabilitySettled

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4.888951.828620.9830.91311720.3070.085
Percentage of DerivativeLiabilitySettled100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DividendEquivalentsBusinessAcquisitions us-gaap:StatementEquityComponents

laz:DividendEquivalentsBusinessAcquisitions

us-gaap:AdditionalPaidInCapital


Dividend
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-3000.0-55000.0-472000.0-465000.0-457000.0-460000.0-138000.0-136000.0-134000.0-262000.0-503000.0-99000.0-1151000.0
Percentage of DividendEquivalentsBusinessAcquisitions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Dividend
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3000.055000.0472000.0465000.0457000.0460000.0138000.0136000.0134000.0262000.0503000.099000.01151000.0
Percentage of DividendEquivalentsBusinessAcquisitions-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

laz:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage laz:InvestmentRedemptionFrequency, us-gaap:InvestmentType

laz:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage

laz:Annually, us-gaap:EquityFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.061.0-3.063.36-0.050.690.6100.010.040.01
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

laz:Daily, laz:OtherAlternativeInvestments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value08.007.9400.060000.060000.060000.060.04
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage0.013.1-0.012.5-0.08.70.00.00.0150.00.00.00.00.00.00.00.00.00.0

laz:Daily, us-gaap:FixedIncomeFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0100.0099.001.00001.00001.00001.00
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage0.0163.9-0.0156.2-0.0144.90.00.00.02500.00.00.00.00.00.00.00.00.00.0

laz:Monthly, laz:OtherAlternativeInvestments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value092.0091.0600.940000.940000.940000.94-0.04
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage0.0150.8-0.0143.7-0.0136.20.00.00.02350.00.00.00.00.00.00.00.00.00.0

laz:Monthly, us-gaap:EquityFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-1.039.03.035.640.050.31-0.37-0.0100.720.23-0.0200.490-0.0100.51-0.04
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage-100.063.9-100.056.2-100.044.9-60.70.00.01800.02300.00.00.00.00.00.00.00.00.0

laz:Monthly, us-gaap:HedgeFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value079.0098.0100.99-0.47-0.0101.0000.10.90.030.01-0.010.020.01
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage0.0129.5-0.0154.7-0.0143.5-77.00.00.02500.00.00.00.00.00.00.00.00.00.0

laz:Quarterly, us-gaap:HedgeFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value021.000.9900.010.470.450.01-0.040.50.06
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareInvestmentRedemptionFrequencyPercentage0.034.4-0.01.6-0.01.477.00.00.00.00.00.0

laz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments

laz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9000.0-45000.050000.031000.0-1000.0-76000.031000.0-30000.00-2000.0-6000.0-1000.0-32000.07000.035000.06000.02000.035000.0-49000.021000.0-10000.022000.0-2000.0-25000.02000.0-28000.0-1872000.0-4056000.0-323000.079000.0-821000.0-1536000.0-636000.0-1380000.0910000.01133000.0-2552000.01463000.0-1773000.0-3072000.0805000.02689000.0-953000.04182000.0-3754000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments us-gaap:InvestmentType

us-gaap:EquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5000.0-31000.045000.030000.0-1000.0-76000.031000.0-30000.00-2000.0-6000.0-1000.0-32000.07000.035000.06000.02000.035000.0-49000.021000.0-10000.022000.0-2000.0-25000.02000.0-28000.0-11000.06000.0-9000.0-9000.03000.08000.0-3000.0-6000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments55.668.990.096.8100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.40.40.50.30.40.30.3-0.1

us-gaap:PrivateEquityFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4000.0-14000.05000.01000.000000-1849000.0-4020000.0-344000.084000.0-807000.0-1502000.0-634000.0-1374000.0906000.01128000.0-2541000.01457000.0-1764000.0-3063000.0802000.02681000.0-950000.04188000.0-3754000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetForeignCurrencyTranslationAdjustments44.431.110.03.2-0.0-0.00.0-0.00.098.899.1106.5106.398.397.899.799.699.699.699.699.699.599.799.699.799.7100.1100.0

laz:FundAdministrationAndOutsourcedServicesExpense

laz:FundAdministrationAndOutsourcedServicesExpense


Fund
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3129262624262828282829343335
Percentage of FundAdministrationAndOutsourcedServicesExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:NonCashLeaseExpense

laz:NonCashLeaseExpense


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value19171714161519131511
Percentage of NonCashLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PaymentsForOtherFinancingActivities

laz:PaymentsForOtherFinancingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.133146.6361.7361.7111.8691.4231.4471.643.0570.820.8280.9143.7670.9111.1031.0237.9471.5870.7530.7131.6140.3630.3740.4691.1550.3270.3281.0940.3320.455-0.0620.1210.040.0310.0280.028330.0270.0190.0210.0190.0170.017
Percentage of PaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PaymentsForTaxReceivableAgreementObligation

laz:PaymentsForTaxReceivableAgreementObligation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.0100.00.0-0.103250.0140.00.013231.2430.00.00.0130.040.7360.00.00.0100.0
Percentage of PaymentsForTaxReceivableAgreementObligation0.0100.00.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.00.00.0100.00.0

laz:PaymentsForTaxReceivableAgreementObligation us-gaap:RelatedPartyTransaction

laz:LtbpTrust


Payments
Period End2021-06-302021-03-31
Value0.010
Percentage of PaymentsForTaxReceivableAgreementObligation0.0100.0

laz:PaymentsForTaxReceivableAgreementObligation us-gaap:RelatedPartyTransactionsByRelatedParty

laz:LtbpTrust


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302017-12-312017-09-302017-06-302017-03-312016-03-31
Value0.00.0-0.103250.0140.00.00.0130.040.73610
Percentage of PaymentsForTaxReceivableAgreementObligation0.00.0100.0100.0100.00.00.0100.0100.0100.0100.0

laz:PaymentsForUnderwritingFees dei:LegalEntity

laz:PaymentsForUnderwritingFees

laz:LGAC


Payments
Period End2021-06-302021-03-31
Value44000.09308000.0
Percentage of PaymentsForUnderwritingFees100.0100.0

laz:PaymentsOrSettlementsForRestructuring

laz:PaymentsOrSettlementsForRestructuring


Payments
Period End2020-12-312020-09-30
Value-0.48-46.115
Percentage of PaymentsOrSettlementsForRestructuring100.0100.0

laz:PaymentsOrSettlementsForRestructuring us-gaap:BalanceSheetLocation

laz:AccruedCompensationAndBenefits


Payments
Period End2020-12-312020-09-30
Value-0.48-35.979
Percentage of PaymentsOrSettlementsForRestructuring100.078.0

us-gaap:OtherLiabilities


Payments
Period End2020-12-312020-09-30
Value0.0-10.136
Percentage of PaymentsOrSettlementsForRestructuring-0.022.0

laz:PaymentsRelatingToCustomerDeposits

laz:PaymentsRelatingToCustomerDeposits


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value5810518-51.69470
Percentage of PaymentsRelatingToCustomerDeposits100.0100.0100.0100.0100.0

laz:PrepaidCompensationAssetAmortization us-gaap:DerivativeInstrumentRisk

laz:PrepaidCompensationAssetAmortization

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Prepaid
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value50302116171834151413
Percentage of PrepaidCompensationAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PrepaidCompensationAssetForeignCurrencyTranslationAndOtherAdjustments us-gaap:DerivativeInstrumentRisk

laz:PrepaidCompensationAssetForeignCurrencyTranslationAndOtherAdjustments

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Prepaid
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1000.02000.0-98000.01118000.0-174000.0-65000.0-1675000.0251000.0177000.0573000.0
Percentage of PrepaidCompensationAssetForeignCurrencyTranslationAndOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PrepaidCompensationAssetForfeited us-gaap:DerivativeInstrumentRisk

laz:PrepaidCompensationAssetForfeited

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Prepaid
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value754000.0346000.01767000.0210000.0225000.0548000.0534000.084000.0126000.0281000.0
Percentage of PrepaidCompensationAssetForfeited100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PrepaidCompensationAssetGranted us-gaap:DerivativeInstrumentRisk

laz:PrepaidCompensationAssetGranted

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Prepaid
Period End2021-06-302021-03-312020-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.01610.01010.00.1890.6041030.00.0
Percentage of PrepaidCompensationAssetGranted0.0100.00.0100.00.0100.0100.0100.00.00.0

laz:SettlementOfShareBasedIncentiveCompensation

laz:SettlementOfShareBasedIncentiveCompensation


Settlement
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.788641.1280.4564.324663.0030.8675.432900.8760.2678.1751010.5151.2994.607610.5161.3983.70950150.505826.9875.7642.8281164.197114.496241.4131.7027.619832.629101232
Percentage of SettlementOfShareBasedIncentiveCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization

laz:StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.0430.0520.052112.523130.1050.1270.1450.1440.1450.1450.1450.1440.074310.2260.0890.1830.1290.1290.129-0.0440.1960.1870.4510.530.5310.053401.852.57431.0411.5321.613
Percentage of StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.0430.0520.052112.523130.1050.1270.1450.1440.1450.1450.1450.1440.074310.2260.0890.1830.1290.130.128-0.0430.1940.1890.4460.6610.5040.112371.7642.41644-0.7361.5091.291
Percentage of StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.899.297.799.0101.198.9124.794.9211.392.995.494.0101.1-70.798.580.0

us-gaap:Parent


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.0430.0520.052112.523130.1050.1270.1450.1440.1450.1450.1450.1440.074310.2260.0890.1830.1290.130.128-0.0430.1940.1890.4460.6610.5040.112371.7642.41644-0.7331.5091.291
Percentage of StockIssuedIssuableDuringPeriodValueBusinessAcquisitionsMergersAndAmortization0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.899.297.799.0101.198.9124.794.9211.392.995.494.0101.1-70.498.580.0

laz:TaxExpenseBenefitFromStockIssuedInConnectionWithSharebasedIncentiveCompensation

laz:TaxExpenseBenefitFromStockIssuedInConnectionWithSharebasedIncentiveCompensation


Tax
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value55000.0-1089000.0-32000.05000.0-636000.0-347000.0-18000.0-61000.0-477000.0-3881000.0-34000.0233000.01362000.06150000.0452000.04000.0528000.04287000.06452000.0190000.0129000.0-7219000.0-3643000.00
Percentage of TaxExpenseBenefitFromStockIssuedInConnectionWithSharebasedIncentiveCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

laz:WeightedAverageNumberOfBasicSharesOutstandingAdjustment

laz:WeightedAverageNumberOfBasicSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1642300.01746300.075584.02178700.01929400.01841800.0278180.02555100.01904600.0326610.02902.0258570.0
Percentage of WeightedAverageNumberOfBasicSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:WeightedAverageNumberOfSharesOutstandingBasicBeforeAdjustments

laz:WeightedAverageNumberOfSharesOutstandingBasicBeforeAdjustments


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1051050.075608104104104-1.158709106110111-0.893997119120119-0.559049120
Percentage of WeightedAverageNumberOfSharesOutstandingBasicBeforeAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:SubsequentEventType

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:SubsequentEvent


Common
Period End2020-07-292020-04-292019-02-042018-10-242018-07-252018-04-242018-01-312017-10-252017-07-262017-04-262017-02-012016-10-262012-10-24
Value0.470.470.940.440.440.441.710.410.410.410.380.380.2
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommunicationsAndInformationTechnology

us-gaap:CommunicationsAndInformationTechnology


Communications
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3533363332313834
Percentage of CommunicationsAndInformationTechnology100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense

us-gaap:DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value68374937666.611292550313.1582235142120342015252018259.023163020153022
Percentage of DeferredCompensationArrangementWithIndividualAllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1911000.0-1687000.0-1550000.0-1729000.0-1926000.0-2206000.0-1264000.0-1220000.0-1260000.0-1281000.0-8104000.0-1213000.0-1245000.0-1278000.0-5972000.0-1285000.0-1552000.0-1332000.0-930000.0-957000.0-1012000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-12-312017-09-302016-12-312016-09-302016-06-30
Value30000.030000.029000.028000.027000.027000.028000.026000.027000.029000.000576000.0599000.0604000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value6.5976.5346.8986.756.4356.6286.8746.6976.8737.0266.9417.3157.5837.7836.4456.2956.4556.1056.296.6487.233
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.1412.1153.0063.0132.912.9833.8743.7163.8583.9023.7083.8223.9774.0623.9824.1914.0863.9814.5794.8335.246
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1900000.0-2096000.0-2867000.0-1134000.0-749000.0-355000.0-6581000.0768000.0216000.0176000.06315000.0-2063000.0-2138000.0-2213000.04681000.0-446000.0-482000.0-422000.096000.054000.0-57000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1 us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-384000.0-380000.0803000.0-622000.0-588000.0-922000.05053000.0-2280000.0-1739000.0-1783000.0
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value231000.0226000.0249000.0224000.0235000.0135000.0180000.0223000.0205000.0207000.0214000.0217000.0223000.0230000.0365000.0373000.0335000.0340000.0301000.0313000.0314000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-26.63-4.948-39.1640-13.6013.529-11.884-17.00726-4.0637.5250.609-9.377-11.756-15.98-11.2668.439-12.532-0.629
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet


Derivative
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-19.502-39.16403.529-11.884-17.007-11.2668.439-12.532-0.629-5.485-6.6924-2.1458.0967.48223-15.053-5.725-11.848-19.3495.607-2.602-7.745-15.57610-14.9441.18214-3.571-8.547-2.071-18.78212
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:DerivativeInstrumentRisk

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-16.491-7.487-25.207-11.261-23.80319-9.539-1.764-6.484-13.8715-3.6470.4991.436-5.545-4.875-5.753-7.3531.389-6.909-0.3122.514-6.076121.894-4.136-1.3225.528-8.906-2.626-6.332-7.5193.477-3.725-2.918-4.7282.856-2.767-0.9373.961
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.00.00.057.760.848.80.0-50.054.681.60.00.00.00.00.00.00.065.316.555.149.6-45.890.850.2-88.3-51.1-17.723.359.245.953.438.962.0143.237.730.427.118.5-79.327.1

laz:LazardGrowthAcquisitionCorpIWarrants


Derivative
Period End2021-06-30
Value-1.725
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.0

laz:ReturnSwapsAndOther


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-6.695-4.279-11.071-5.202-11.80818-5.9851.324-1.976-7.6578.214-1.8470.791.656-5.3850.858-4.032-0.763-0.699-3.90110-0.016-3.1680.2252.835-6.325-1.946
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.00.00.026.730.246.80.037.516.645.00.00.00.00.047.810.232.2121.312.758.345.20.7-39.13.012.042.034.0

us-gaap:ForeignExchangeForward


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1.7196.818-3.54-3.039-3.5491.7721.9233.969-3.4244.522.41.4316.236-2.483-0.995-2.991-6.631.4726.192-1.5910.446-7.33.2871.109-4.023158.579150.178-1.153-1.457-5.31-1.6265.231-0.596-3.3774.051-1.9225.2786.541-3.139-6.2581.824-11.884
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.00.00.015.69.14.40.0112.528.8-26.60.00.00.00.00.00.00.0-13.173.412.7-70.9133.1-49.14.6187.6190.2114.764.7-1.220.112.327.4-29.0-201.07.721.738.412.9446.544.887.973.2-88.163.3

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value494949494948495051103515252202494950192464747194434444158363637356030682323191918181413131210
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value494949494948495051103515252202494950192464747194434444158363637356030682323191918181413131210
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value494949494948495051103515252202494950192464747194434444158363637356030682323191918181413131210
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsSharebasedCompensationStock

us-gaap:DividendsSharebasedCompensationStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2.0652.2531.7161.731.7041.8631.4151.441.6313.050.8190.8280.9143.7670.9110.921.0233.0540.7380.7530.7591.5680.3630.3740.4691.1550.3270.3281.0940.3320.125
Percentage of DividendsSharebasedCompensationStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsSharebasedCompensationStock us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-4.104-5.859-4.396-4.446-4.628-6.717-4.309-4.35-4.63-15.512-5.332-5.296-5.221-28.406-5.264-5.147-5.358-25.977-4.435-4.485-4.571-23.793-3.915-3.879-3.563-22.898-4.047-4.102-4.374-5.013-8.487
Percentage of DividendsSharebasedCompensationStock-198.7-260.1-256.2-257.0-271.6-360.5-304.5-302.1-283.9-508.6-651.0-639.6-571.2-754.1-577.8-559.5-523.8-850.6-600.9-595.6-602.2-1517.4-1078.5-1037.2-759.7-1982.5-1237.6-1250.6-399.8-1509.9-6789.6

us-gaap:NoncontrollingInterest


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312014-03-312013-12-31
Value1.7311.7311.1851.1861.1861.186-2.0620.6871.3750.0020.001
Percentage of DividendsSharebasedCompensationStock83.876.869.168.669.663.7-143.242.145.10.60.8

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.3340.5220.5310.5440.5180.677-2.0233.5020.9441.6750.8190.8280.9143.7670.9110.921.0233.0540.7380.7530.7591.5680.3630.3740.4691.1550.3270.3281.0960.330.124
Percentage of DividendsSharebasedCompensationStock16.223.230.931.430.436.3-143.0243.257.954.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.299.499.2

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.4386.3814.9274.995.1467.3942.2867.8525.574176.1516.1246.135326.1756.0676.381295.1735.2385.33254.2784.2534.032244.3744.435.475.3438.611
Percentage of DividendsSharebasedCompensationStock214.9283.2287.1288.4302.0396.9161.6545.3341.8563.5751.0739.6671.2854.1677.8659.5623.8950.6700.9695.6702.21617.41178.51137.2859.72082.51337.61350.6500.01609.36888.8

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16-79.205957637-61.85164-83.78621-29.74-23.291-19.593-96.168493537
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:FairValueInputsLevel3


Fair
Period End2021-03-312020-03-31
Value1000.0-123000.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss us-gaap:InvestmentType

us-gaap:EquitySecurities


Fair
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value153000.0-179000.0-123000.0-930000.0163000.0-12000.0-2000.00062000.0-1000.010000.0130000.0-128000.00236000.02000.02000.03000.0-3402000.0635000.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss0.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.1520.0010.0320.153-0.179-0.123-0.930.163-0.012-0.0020.00.00.062-0.0010.010.13-0.1280.0020.2360.0020.0070.003-3.4020.6350.0627.85-0.9192.51.266-5.5844.3365.165-3.096-0.776-28.058-0.5044.753-7.6910.552-0.9633.548
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302020-06-30
Value1.152-0.179
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:InvestmentType

us-gaap:EquitySecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-06-302011-06-30
Value0.00.0010.0150.0010.156-0.099-0.1550.148-0.012-0.0020.00.00.062-0.0010.010.13-0.1280.0020.2360.0020.0070.0030.0020.0020.0080.0020.0050.00.0120.0020.0050.003
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0100.046.90.7-87.280.516.790.8100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-0.10.312.90.0-0.50.00.9-0.00.10.1

us-gaap:PrivateEquityFunds


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.1520.0170.152-0.335-0.024-0.7750.0150.00.6330.0547.848-0.9242.51.254-5.5824.3335.174-3.056-0.682-27.811-0.5224.786-7.5640.458-0.9633.545
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.053.199.3187.219.583.39.2-0.099.787.1100.0100.5100.099.1100.099.9100.298.787.999.1103.6100.798.383.0100.099.9

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases


Fair
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0110.00.00.00.00.00.00.00.00.00.00.00.02.9517
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases0.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases us-gaap:InvestmentType

us-gaap:Derivative


Fair
Period End2021-06-302021-03-31
Value0.011
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases0.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales


Fair
Period End2021-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value11112.418130.00.00.00.00.00.00.00.00.249300.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales us-gaap:InvestmentType

us-gaap:Derivative


Fair
Period End2021-06-30
Value11
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-1.065-2.109105.12612-16.0534.881-4.644-0.8170.792-3.433-2.27-5.843-2.185-0.1943.5842.0946.691-7.1812.728-4.1116.2893.772-9.833
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-11.368-144.542212-3.6921.576-263.01212345-3.38-256.0482087822-157.941
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities

us-gaap:IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value882021977.58216-23.325-11.269-36.331-47.38840-33.703104154-74.124-0.9952.52736-66.9798.146-28.35634-86.169-29.9611866-118.6778018121-61.096.9821742-4.954-25.039-3.18261-2.68739-84.29126-13.3631121124.597
Percentage of IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.39316-161.419-7.919-4.1361723.138202384-5.7513-6.3211379.497-17.1251573-6.1679.1925.99446-15.7648.281-4.141017.819.395-8.135102-21.167-9.48813778.234-5.2077.13352-2.61976-23.95911-23.64314.245-0.656
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value767.486158-84.14758-59.961-28.826-26.3865.5311349-72.269599516-110.272112-115.04311243-11.877111.2464.632-103.3446463-16.501209.149-25.390.64466-11.333-8.042-5.698-28.87111-89.83481-5.352-47.125-35.419133-88.68242
Percentage of IncreaseDecreaseInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value514401524354351319427391372372349343416405374361414361381353308297334319336328307338345321367301331277445283283338338273286269348282263300
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestChangeInRedemptionValue

us-gaap:MinorityInterestChangeInRedemptionValue


Minority
Period End2021-06-302021-03-31
Value0.671-40.925
Percentage of MinorityInterestChangeInRedemptionValue100.0100.0

us-gaap:MinorityInterestChangeInRedemptionValue us-gaap:StatementEquityComponents

laz:RedeemableNoncontrollingInterest


Minority
Period End2021-06-302021-03-31
Value-0.67140
Percentage of MinorityInterestChangeInRedemptionValue-100.0-100.0

us-gaap:AdditionalPaidInCapital


Minority
Period End2021-06-302021-03-31
Value-0.648-44.122
Percentage of MinorityInterestChangeInRedemptionValue-96.6107.8

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-31
Value1.3193.197
Percentage of MinorityInterestChangeInRedemptionValue196.6-7.8

us-gaap:Parent


Minority
Period End2021-06-302021-03-31
Value-0.648-44.122
Percentage of MinorityInterestChangeInRedemptionValue-96.6107.8

us-gaap:OccupancyNet

us-gaap:OccupancyNet


Occupancy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2934333130323429303729302728262727282627272529282826273929322528263024222223222121
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax


Other
Period End2020-12-312020-09-302020-06-30
Value157000.0110000.0-9000.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1.4771.065-6.514-6.4240.4828.913-45.9259.052.8120.049-6.930.8638.3-5.01415-4.715-8.609-0.495-23.824-0.033-0.475-0.141250.477-14.8360.219-18.2883.251-6.389-0.557-10.8310.050.704-3.423-32.351-1.893-3.457-2.597-30.033-4.5850.055-3.68524-3.684
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-373000.0762000.0-1389000.0-1644000.0-171000.01790000.0-10332000.0-1607000.02420000.0300000.0-487000.0214000.01746000.0-1342000.0166000.0-1197000.0-2215000.0-261000.0-4890000.0-17000.0-228000.0-70000.013397000.0253000.0-8121000.0115000.0-10964000.0-1731000.03600000.0-50000.0-8074000.0-25000.0-84000.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302020-06-30
Value5.50222
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.025-18.678402722-41.658-6.425-17.71-4.2413.829-21.402-7.813-35.1531224151716-77.219-0.192-16.5791115-18.557-3.045-33.914-49.617-25.849-2.3845.339-7.80112-18.208-15.681
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-1.4771.065-6.671-6.5340.4919.088-46.0099.052.8120.049-9.5830.8638.3-5.01415-4.715-8.609-0.495-23.824-0.033-0.475-0.141250.477-14.8360.219-18.288
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-36.7-5.7-16.6-23.52.1-21.8716.1-51.1-66.31.344.8-11.0-23.6-40.764.3-31.4-49.0-3.030.917.22.9-1.2162.8-2.6487.2-0.636.9

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value5.502-19.743463422-50.74639-26.76-7.0533.78-11.819-8.676-43.453178.822192616-53.396-0.159-16.10411-9.806-19.03411-34.133-31.331
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax136.7105.7116.6123.597.9121.8-616.1151.1166.398.755.2111.0123.6140.735.7131.4149.0103.069.182.897.1101.2-62.8102.6-387.2100.663.1

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.026-18.679402722-41.659-6.425-17.711-4.2393.828-21.4-7.815-35.1521224151716-77.219-0.192-16.5791115-18.557-3.045-33.914-49.619-25.849-1.8425.356-7.75712-17.63-15.856
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.077.3100.399.4100.496.8101.1

us-gaap:AociAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-12-31
Value-0.0010.0010.0010.001-0.0010.0010.001-0.0020.001-0.0020.002-0.0010.0-0.0010.002-0.002
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-0.0-0.00.00.0-0.0-0.0-0.00.00.00.0-0.00.00.0-0.00.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax


Other
Period End2021-06-30
Value-23579000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect


Other
Period End2020-12-312020-09-302020-06-30
Value33000.022000.0-2000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.4581.3361.1911.3451.6151.8951.3981.0741.1131.1327.9470.9490.7771.0624.4281.0811.3561.086-0.9151.1341.1211.1862.5521.3811.191.186
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-483000.0-381000.0-388000.0-412000.0-338000.0-338000.01691000.0-172000.0-174000.0-178000.0-1387000.0-264000.0-468000.0-216000.0-1544000.0-204000.0-196000.0-276000.0586000.0375000.0403000.0393000.0-38000.0-368000.0538000.0563000.0-532000.0-528000.0331000.0532000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherExpenses

us-gaap:OtherExpenses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value154.96114.681139.03910115.2941638141026139.031129.257129.251109.1648.297109.938699.64310109.358632.4845.9899.136107.8258.53711119.3748.8399.626137.9348.8169.367
Percentage of OtherExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic


Participating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-30
Value1549000.01292000.03800000.01505000.01349000.01013000.01161000.0625000.01604000.000
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted

us-gaap:ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted


Participating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-30
Value-1549000.0-1292000.0-3043000.0-1203000.0-1170000.0-1013000.0-20000.00-5000.000
Percentage of ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.7171.020.940.1020.4081.4114.3471.1027.1960.6152.6575.1723.6091.4512.1341.3160.7421.0011.1450.2580.2840.4240.9293.4276.0995.8414.2763.2751.5954.3124.1392.6234.9882.617103.937-10.49923
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceInitialPublicOffering dei:LegalEntity

us-gaap:ProceedsFromIssuanceInitialPublicOffering

laz:LGAC


Proceeds
Period End2021-06-302021-03-31
Value0.0575
Percentage of ProceedsFromIssuanceInitialPublicOffering0.0100.0

us-gaap:ProceedsFromIssuanceInitialPublicOffering us-gaap:BusinessAcquisition

laz:LazardGrowthAcquisitionCorpI


Proceeds
Period End2021-03-31
Value575
Percentage of ProceedsFromIssuanceInitialPublicOffering100.0

us-gaap:ProceedsFromIssuanceInitialPublicOffering us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

laz:LazardGrowthAcquisitionCorpI, us-gaap:SubsequentEvent


Proceeds
Period End2021-02-28
Value575
Percentage of ProceedsFromIssuanceInitialPublicOffering0.0

us-gaap:ProceedsFromIssuanceInitialPublicOffering us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock

laz:LazardGrowthAcquisitionCorpI, us-gaap:SubsequentEvent, us-gaap:OverAllotmentOption


Proceeds
Period End2021-02-28
Value75
Percentage of ProceedsFromIssuanceInitialPublicOffering0.0

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromMinorityShareholders


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.3320.0660.00.0250.5720.00.1970.9961.1530.0370.00.00.00.0930.0070.2110.00.0570.430.6650.0530.3840.0270.4810.1970.760.080.704132.8410.0960.8841.6191.0050.02.0
Percentage of ProceedsFromMinorityShareholders100.0100.00.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-26000.0628000.01196000.016000.066000.069000.0411000.013000.015000.070000.02019000.038000.096000.01231000.0467000.090000.058000.0135000.0230000.0707000.055000.0104000.0206000.0135000.0292000.044000.01062000.0673000.0100000.0250000.0568000.0104000.03108000.02631000.02210000.0105000.0444000.01609000.0808000.0154000.0155000.044000.0131000.047000.0115000.0139000.0
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfessionalFees

us-gaap:ProfessionalFees


Professional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1914201416142315191418131612141111111310119.762131013111311147.5911012108.613128.514139.311131113
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-2.169-0.3759.0993.808-9.4440.5271.017-0.546-9.383.8299.0581.4880.66615-3.1654.7530.18135.9311.5452.0650.5140.088-0.2562.0611.2322.6792.064-1.6339.1362.751-0.1981.6940.1483.8781.553-0.1331.2813.0771.4452.4630.967-1.0240.2262.322
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1941000.0-1717000.0-1579000.0-1757000.0-1953000.0-2233000.0-2041000.0-1246000.0-1287000.0-1310000.0-9334000.0-1213000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-25037000.0-1336000.0-1191000.0-1345000.0-1615000.0-1895000.0-1398000.0-1074000.0-1113000.0-1132000.0-7947000.0-949000.0-777000.0-1062000.0-4428000.0-1081000.0-1356000.0-1086000.05967000.0-1134000.0-1121000.0-1186000.0-1190000.0-1186000.0-1035000.0-6283000.03851000.0-1282000.02649000.01478000.04405000.0-1464000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1458000.0-1336000.0-1191000.0-1345000.0-1615000.0-1895000.0-1398000.0-1074000.0-1113000.0-1132000.0-7947000.0-949000.0-777000.0-1062000.0-4428000.0-1081000.0-1356000.0-1086000.05967000.0-1134000.0-1121000.0-1186000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax5.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-23579000.0000000000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax94.2-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-25037000.0-1336000.0-1191000.0-1345000.0-1615000.0-1895000.0-1398000.0-1074000.0-1113000.0-1132000.0-7947000.0-949000.0-777000.0-1062000.0-4428000.0-1081000.0-1356000.0-1086000.0915000.0-1134000.0-1121000.0-1186000.0-1190000.0-1186000.0-1035000.0-6283000.03858000.0-1289000.02663000.01487000.04439000.0-1482000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.015.3100.0100.0100.0100.0100.0100.0100.0100.2100.5100.5100.6100.8101.2

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-483000.0-381000.0-388000.0-412000.0-338000.0-338000.0-643000.0-172000.0-174000.0-178000.0-1387000.0-264000.0
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-31
Value-0.2441.440.420.041.7337.6-0.02-0.693.9937.29-0.32-0.690.5546.450-1.160.5841.38-0.010.530.0739.89-0.070.013.1447.090.46-0.260.020
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.0841.050.05-0.58-0.1742.250.030.72-1.3644.04-0.130.56-3.0547.60.23-0.010.139.88-0.26-0.96-0.8341.580.050.454.2438.81.07-3.562.434.61-0.16-0.01
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue33.399.111.9-1450.0-9.8112.4-150.0-104.3-34.1118.140.6-81.2-554.5102.50.00.917.296.42600.0-181.1-1185.7104.2-71.44500.0135.082.4232.61369.20.00.0-800.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

laz:DeferredStockUnit


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.5941.920.550.34-14.7142.310.390.02-4.6836.65-1.6-0.18-3.3455.520.1601.3942.910.250.033.4831.47-0.32-0.024.5550.900.075.6244.350.24
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

laz:OtherProfitsInterestParticipationRights


Share
Period End2021-06-302021-03-31
Value043.23
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0103.1

laz:PerformanceBasedRestrictedParticipationUnit


Share
Period End2021-06-302021-03-31
Value046.63
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0111.2

laz:PerformanceBasedRestrictedStockUnit


Share
Period End2021-06-302021-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value046.6300056.800043.7600032.9100052.8500
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0111.2-0.0-0.0-0.0102.30.00.00.0102.00.00.00.0104.6-0.0-0.00.0103.80.00.0

laz:ProfitsInterestParticipationRightsIncludingPRPUs


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value044.7300042.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0106.70.00.0-0.0101.4

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.0443.230.8-0.8042.8900035.3200054.4500042.580.02-0.04036.7800050.8800045.520
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.9103.1145.5-235.3-0.0101.40.00.0-0.096.4-0.0-0.0-0.098.10.00.00.099.28.0-133.30.0116.9-0.0-0.00.0100.00.00.00.0102.60.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-0.0243.13-0.03-0.240.0542.820.140.190.1438.18-0.34-0.29-0.3454.410.02-0.060.0243.050.220.17-0.0734.54-0.270.01-0.148.93-0.16-0.12-0.1343.00.29
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-0.4102.9-5.5-70.6-0.3101.235.9950.0-3.0104.221.3161.110.298.012.50.01.4100.388.0566.7-2.0109.884.4-50.0-2.296.10.0-171.4-2.397.0120.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

laz:PerformanceBasedRestrictedStockUnit


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value053.4800043.54000.0632.38-0.610046.74000.0142.2600038.43000.435.56
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0100.00.00.00.0100.00.00.0100.0100.0100.00.00.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.0

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value-0.4343.341.13-1.12-1.1445.780.110.01-0.7839.15-0.09-0.091.8542.39-0.07-0.15-2.3647.930.070.370.1136.610.250.061.2637.932.190035.230-0.17
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.081.00.00.00.0105.10.00.0-1300.0120.914.80.00.090.70.00.0-23600.0113.40.00.00.095.30.00.0315.0106.70.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-0.147.520.010-0.3447.00.080.060.3936.640.010.02-0.5843.44-0.01-0.09-0.1745.5300.06-0.0239.120.250.080.4930.3-0.06-0.12-0.0638.04-0.13-0.21
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.088.90.00.00.0107.90.00.0650.0113.2-1.60.00.092.90.00.0-1700.0107.70.00.00.0101.80.00.0122.585.20.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueAcquisitions

laz:CommonStockHeldBySubsidiary


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302015-12-312015-09-302013-12-312013-09-302013-06-302013-03-31
Value5.278300.0040.00.0190.6731.0480.00.00.0610.00.9594.1370.00.0-12.2450.00.05.173
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0100.0100.00.0100.0100.0100.00.00.0100.00.0100.0100.00.00.0100.00.00.0100.0

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302015-12-312015-09-302013-12-312013-09-302013-06-302013-03-31
Value-5.278-30.315-0.0040.0-0.019-0.673-1.0480.00.0-0.061-0.86-11.991-2.610.00.0110.00.0-4.994
Percentage of StockIssuedDuringPeriodValueAcquisitions-100.0-100.0-100.00.0-100.0-100.0-100.00.00.0-100.00.0-1250.4-63.10.00.0-97.10.00.0-96.5

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302013-03-312011-12-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value-0.843-65.893-1.096-0.461-3.689-66.38-2.985-0.806-116.092-2.61387-5.441-83.016-12.273-32.263
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

laz:CommonStockHeldBySubsidiary


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302013-03-312011-12-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value111141.1660.916161263.9031.70419278-149.2773116230167
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-1354.2-174.3-106.4-198.7-448.4-190.1-130.8-211.4-165.7-2995.2-170.3-578.1-196.3-245.9-519.6

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302013-03-312011-12-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value-12.259-132.822-2.262-1.377-20.23-118.326-6.888-2.51-307.883-80.877237-36.972-245.984-42.45-199.902
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation1454.2201.6206.4298.7548.4178.3230.8311.4265.23095.2270.4679.5296.3345.9619.6

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302013-03-312011-12-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value-0.843-65.893-1.096-0.461-3.689-66.38-2.985-0.806-116.102-2.61387-5.516-83.016-12.273-32.263
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1101.4100.0100.0100.0

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312013-03-31
Value0.0-47.9020.00.00.0-74.228-0.609
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-0.072.7-0.0-0.0-0.0111.80.5

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1111220.00.00.09564781591922468277145546778106713411183134134820.00.08510654272030131708170463293324383210.98
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:StatementClassOfStock

srt:ExecutiveOfficer, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0180.00.00.010.00.00.00.014
Percentage of StockRepurchasedDuringPeriodValue0.015.20.00.00.010.50.00.00.07.6

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

laz:CommonStockHeldBySubsidiary


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1111220.00.00.09564781591922468277145546778106713411183134134820.00.08510654272030131708170463293324383210.98
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1111220.00.00.09564781591922468277145546778106713411183134134820.00.08510654272030131708170463293324383210.98
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther

us-gaap:StockholdersEquityOther


Stockholders
Period End2020-12-312020-09-302020-06-302017-12-312017-09-302017-06-302017-03-31
Value49000.01000.02117000.0000-408000.0
Percentage of StockholdersEquityOther100.0100.0100.00.00.00.0100.0

us-gaap:StockholdersEquityOther us-gaap:StatementEquityComponents

us-gaap:Parent


Stockholders
Period End2020-12-312020-09-302020-06-302017-12-312017-09-30
Value49000.01000.02117000.000
Percentage of StockholdersEquityOther100.0100.0100.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312020-09-302020-06-302017-12-312017-09-302013-03-31
Value49000.01000.02117000.000-78000.0
Percentage of StockholdersEquityOther100.0100.0100.00.00.00.0

us-gaap:TradingSecuritiesUnrealizedHoldingGainLoss

us-gaap:TradingSecuritiesUnrealizedHoldingGainLoss


Trading
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value181.054321743-44.43210-0.597.22919-29.8261.972-5.864-9.291-0.746.9497.80313-3.4059.0470.8595.3156.396-24.962-3.3082.193-8.493-13.897130.491
Percentage of TradingSecuritiesUnrealizedHoldingGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value6.8568248.5307346.0129494.8256857.8162174.5959634.1941458.875829109.94279712119.7714669.8742127.9119716.8795746.8508437.1904136.59341011101212101519
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2020-07-242020-04-242020-01-292019-10-312019-07-192019-04-192019-01-302018-10-192018-07-202018-04-202018-01-312017-10-202017-07-212017-04-212017-01-312016-10-21
Value112112112112129129129129129129129129129129129129
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding us-gaap:ConsolidatedEntities

srt:Subsidiaries


Entity
Period End2020-07-242020-04-242020-01-292019-10-312019-07-192019-04-192019-01-302018-10-192018-07-20
Value7.784718.228669.0234937.7352412219191110
Percentage of EntityCommonStockSharesOutstanding6.97.38.06.917.614.915.29.07.7

laz:AccruedEmployeeBenefits

laz:AccruedEmployeeBenefits


Accrued
Period End2020-12-312019-12-312018-12-31
Value605151
Percentage of AccruedEmployeeBenefits100.0100.0100.0

laz:AdvancesAndPrepayments

laz:AdvancesAndPrepayments


Advances
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value8243665635533033338694
Percentage of AdvancesAndPrepayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AggregateCarryingAmountNoninterestBearingTradeReceivables

laz:AggregateCarryingAmountNoninterestBearingTradeReceivables


Aggregate
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value652492574510586590625612594563639593491486597464562460413436415419420516471426461457443477450401
Percentage of AggregateCarryingAmountNoninterestBearingTradeReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:AggregateCarryingAmountOtherReceivables

laz:AggregateCarryingAmountOtherReceivables


Aggregate
Period End2021-06-302021-03-312020-12-31
Value594537552
Percentage of AggregateCarryingAmountOtherReceivables100.0100.0100.0

laz:AmountOfCarryForwardsWithAnExpirationDate

laz:AmountOfCarryForwardsWithAnExpirationDate


Amount
Period End2020-12-31
Value172
Percentage of AmountOfCarryForwardsWithAnExpirationDate100.0

laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity laz:SpecialPurposeEntity

laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity

laz:NonCashDeferredUnderwritingFees


Deferred
Period End2021-06-30
Value20
Percentage of DeferredCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity100.0

laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeEntity laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition

laz:DeferredCostsAssociatedWithIPOOfSpecialPurposeEntity

laz:NonCashDeferredUnderwritingFees, laz:LazardGrowthAcquisitionCorpI


Deferred
Period End2021-03-31
Value20
Percentage of DeferredCostsAssociatedWithIPOOfSpecialPurposeEntity100.0

laz:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards

laz:DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value281272249239285309
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0

laz:DeferredTaxLiabilitiesPertainingToCompensationAndBenefits

laz:DeferredTaxLiabilitiesPertainingToCompensationAndBenefits


Deferred
Period End2020-12-312019-12-31
Value177.058
Percentage of DeferredTaxLiabilitiesPertainingToCompensationAndBenefits100.0100.0

laz:DepositsAndOtherCustomerPayables

laz:DepositsAndOtherCustomerPayables


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1228123912011244123011441246140514801315115410561055955992702829625472587721525506399375377314278401350275289385246269262338274288342273330361322
Percentage of DepositsAndOtherCustomerPayables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DepositsAndOtherCustomerPayables us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value100.0670.1040.2150.2360.4180.062
Percentage of DepositsAndOtherCustomerPayables0.80.00.00.00.00.00.0

laz:DepositsAndOtherCustomerPayables us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value120112461154992472506314275269
Percentage of DepositsAndOtherCustomerPayables100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DepositsAndOtherCustomerPayables us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value120112461154992472506314275269
Percentage of DepositsAndOtherCustomerPayables100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value120112461154992472506314275269
Percentage of DepositsAndOtherCustomerPayables100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DepositsWithBanksAndShortTermInvestments

laz:DepositsWithBanksAndShortTermInvestments


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value1111101411341193115510801180128913011138100610151000862935652756572419534667387389276287217207240244
Percentage of DepositsWithBanksAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:DepositsWithBanksAndShortTermInvestments us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value113411801006935419389207244
Percentage of DepositsWithBanksAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0

laz:DepositsWithBanksAndShortTermInvestments us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value113411801006935419389207244
Percentage of DepositsWithBanksAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value113411801006935419389207244
Percentage of DepositsWithBanksAndShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0

laz:DerivativeCashCollateralForReturnSwaps us-gaap:FinancialInstrument

laz:DerivativeCashCollateralForReturnSwaps

us-gaap:TotalReturnSwap


Derivative
Period End2021-03-312020-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2.9966.8932.3161.2161.8961716
Percentage of DerivativeCashCollateralForReturnSwaps100.0100.0100.0100.0100.0100.0100.0

laz:EquityFundsThatInvestedInFundsManagedByCompany

laz:EquityFundsThatInvestedInFundsManagedByCompany


Equity
Period End2020-12-312019-12-312018-12-312017-12-31
Value929987102
Percentage of EquityFundsThatInvestedInFundsManagedByCompany100.0100.0100.0100.0

laz:FinancingFeeReceivable

laz:FinancingFeeReceivable


Financing
Period End2021-06-302021-03-312020-12-31
Value1009090
Percentage of FinancingFeeReceivable100.0100.0100.0

laz:GrossDeferredTaxAssetsPertainingToBasisAdjustments

laz:GrossDeferredTaxAssetsPertainingToBasisAdjustments


Gross
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value195233288339692727598739820846877
Percentage of GrossDeferredTaxAssetsPertainingToBasisAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:GrossDeferredTaxAssetsPertainingToNetOperatingLossAndTaxCreditCarryforwards

laz:GrossDeferredTaxAssetsPertainingToNetOperatingLossAndTaxCreditCarryforwards


Gross
Period End2020-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value281309283348308209156
Percentage of GrossDeferredTaxAssetsPertainingToNetOperatingLossAndTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0

laz:IncomeAndOtherTaxReceivablesCurrent

laz:IncomeAndOtherTaxReceivablesCurrent


Income
Period End2020-12-312019-12-312018-12-312017-12-31
Value49593538
Percentage of IncomeAndOtherTaxReceivablesCurrent100.0100.0100.0100.0

laz:IndefiniteLivedCarryforwards

laz:IndefiniteLivedCarryforwards


Indefinite
Period End2020-12-31
Value54
Percentage of IndefiniteLivedCarryforwards100.0

laz:InterestBearingFinancingFeeReceivables

laz:InterestBearingFinancingFeeReceivables


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value9082777777777983907774818064576376778278818281768681826569587476
Percentage of InterestBearingFinancingFeeReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:InterestBearingFinancingFeeReceivables us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9278918278828871
Percentage of InterestBearingFinancingFeeReceivables102.3102.5100.9102.4102.5101.0102.6102.8

laz:InterestBearingFinancingFeeReceivables us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9077908076818669
Percentage of InterestBearingFinancingFeeReceivables100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9278918278828871
Percentage of InterestBearingFinancingFeeReceivables102.3102.5100.9102.4102.5101.0102.6102.8

laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity laz:SpecialPurposeEntity

laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity

laz:OtherOfferingCost


Other
Period End2021-06-30
Value852000.0
Percentage of OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeAcquisitionEntity100.0

laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeEntity laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition

laz:OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeEntity

laz:OtherOfferingCost, laz:LazardGrowthAcquisitionCorpI


Other
Period End2021-03-31
Value808000.0
Percentage of OtherOfferingCostsAssociatedWithIPOOfSpecialPurposeEntity100.0

laz:PayablePursuantToTaxReceivableAgreement us-gaap:RelatedPartyTransaction

laz:PayablePursuantToTaxReceivableAgreement

laz:LtbpTrust


Payable
Period End2021-06-302021-03-312020-12-31
Value211211221
Percentage of PayablePursuantToTaxReceivableAgreement100.0100.0100.0

laz:PayablePursuantToTaxReceivableAgreement us-gaap:RelatedPartyTransactionsByRelatedParty

laz:LtbpTrust


Payable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value211211221221221221247246246246270277277277310512512512513513513513523
Percentage of PayablePursuantToTaxReceivableAgreement100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

laz:PensionAndOtherPostretirementAndPostemploymentBenefitPlansAssets us-gaap:RetirementPlanType

laz:PensionAndOtherPostretirementAndPostemploymentBenefitPlansAssets

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value282.92219160.822
Percentage of PensionAndOtherPostretirementAndPostemploymentBenefitPlansAssets100.0100.0100.0100.0100.0

laz:PrepaidCompensationAsset

laz:PrepaidCompensationAsset


Prepaid
Period End2020-12-312019-12-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1017476149607588114496788107759511513773941121336074881064756657617
Percentage of PrepaidCompensationAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:PrepaidCompensationAsset us-gaap:DerivativeInstrumentRisk

laz:LazardFundInterestsAndOtherSimilarDeferredCompensationArrangements


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value1812321011251481917492118161769411214960758849
Percentage of PrepaidCompensationAsset0.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0

laz:ReceivablesFromCustomersAndOther

laz:ReceivablesFromCustomersAndOther


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1691831211061321091251992021921849310313083100127877396921007375571357277801175291117725384807183141100936373
Percentage of ReceivablesFromCustomersAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:ReceivablesFromCustomersAndOther us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value100.1080.161.0610.4240.5020.102
Percentage of ReceivablesFromCustomersAndOther6.10.10.11.00.30.50.1

laz:ReceivablesFromCustomersAndOther us-gaap:FinancialInstrument

laz:CustomerAndOtherReceivables


Receivables
Period End2021-06-302021-03-312020-12-31
Value12311099
Percentage of ReceivablesFromCustomersAndOther72.660.582.4

laz:StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests

laz:StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value11801024119397688478694215631491144016731583149214071637169115621414150914461490
Percentage of StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value119394216731637
Percentage of StockholdersEquityBeforeCommonStockHeldBySubsidiariesAndNoncontrollingInterests100.0100.0100.0100.0

laz:TransactionCostsAssociatedWithIPOOfSpecialPurposeEntity laz:SpecialPurposeEntity, us-gaap:BusinessAcquisition

laz:TransactionCostsAssociatedWithIPOOfSpecialPurposeEntity

laz:NetUnderwritingFee, laz:LazardGrowthAcquisitionCorpI


Transaction
Period End2021-03-31
Value8500000.0
Percentage of TransactionCostsAssociatedWithIPOOfSpecialPurposeEntity100.0

laz:UnclaimedFundsOfSubsidiaries

laz:UnclaimedFundsOfSubsidiaries


Unclaimed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1817171424263126282728
Percentage of UnclaimedFundsOfSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:UnderwritingCostsAssociatedWithTheIPOOfSpecialPurposeAcquisitionEntity laz:SpecialPurposeEntity

laz:UnderwritingCostsAssociatedWithTheIPOOfSpecialPurposeAcquisitionEntity

laz:NetUnderwritingFee


Underwriting
Period End2021-06-30
Value8500000.0
Percentage of UnderwritingCostsAssociatedWithTheIPOOfSpecialPurposeAcquisitionEntity100.0

laz:UnrecognizedTaxBenefitsReversalOfInterestAndPenalties

laz:UnrecognizedTaxBenefitsReversalOfInterestAndPenalties


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value3757000.03455000.04889000.06185000.03143000.03865000.03177000.07326000.03130000.01785000.02430000.01223000.0
Percentage of UnrecognizedTaxBenefitsReversalOfInterestAndPenalties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value818739743575652588663668705695685640714674571551654527638537495514497502501593557507544523512536478
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedFeesAndOtherRevenueReceivable

us-gaap:AccruedFeesAndOtherRevenueReceivable


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value649556621468519478537468502503501546610543487451527439564440402414423426443457483429439401452430391368400389388436402439418424480437
Percentage of AccruedFeesAndOtherRevenueReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedFeesAndOtherRevenueReceivable us-gaap:RelatedPartyTransactionsByRelatedParty

laz:AffiliatedFunds


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value6878724049545455565259698478695770524954494842
Percentage of AccruedFeesAndOtherRevenueReceivable10.514.011.68.69.511.410.211.911.310.311.812.713.914.414.212.713.312.08.912.512.311.79.9

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value180179166155124128132136147150136
Percentage of AccruedLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value363536384031273133434034343823272529161213111220211823292931282624222322202119171615
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AlternativeInvestment

us-gaap:AlternativeInvestment


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6060525151523350648057606880
Percentage of AlternativeInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AlternativeInvestment us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

laz:EquityGrowth, us-gaap:PrivateEquityFunds


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value373836343437324056
Percentage of AlternativeInvestment62.063.168.167.067.071.497.479.898.4

us-gaap:AlternativeInvestment us-gaap:InvestmentType

laz:OtherAlternativeInvestments


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.6310.6170.6370.6020.5960.5670.6090.5920.5970.5810.5670.5620.5720.595
Percentage of AlternativeInvestment1.01.01.21.21.21.11.81.20.90.71.00.90.80.7

us-gaap:EquityFunds


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.050.0480.0460.0390.0360.0310.0420.0390.0390.0380.0340.0520.0530.053
Percentage of AlternativeInvestment0.10.10.10.10.10.10.10.10.10.00.10.10.10.1

us-gaap:FixedIncomeFunds


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0050.0050.0050.0050.0050.0050.0050.0070.0070.0070.0070.0070.0070.006
Percentage of AlternativeInvestment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HedgeFunds


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2221161616140.2419.57824240.2990.330.3322.517
Percentage of AlternativeInvestment36.835.730.631.731.827.40.718.937.430.20.50.50.53.1

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312012-03-312011-12-312011-09-302010-12-31
Value868783659537530531532538577617586616511366430429423385460457482395479524530365371350400
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value803718602481469449494480506533515546434276344338330262327313321263354364366287372355370249309291269215223227214160
Percentage of AssetsFairValueDisclosure92.491.791.489.688.584.592.889.387.886.387.988.785.175.580.178.878.168.271.168.666.666.873.969.50.00.070.30.00.00.00.00.00.00.00.00.00.043.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value1.0651.2540.5361.9256.652261.3953.2782.182.504117.496.399113.7323.4432.595321.9932.269310.5441.048122634415041424452657568839878
Percentage of AssetsFairValueDisclosure0.10.20.10.41.35.00.30.60.40.42.01.21.33.20.90.80.68.40.40.56.50.10.22.30.00.07.90.00.00.00.00.00.00.00.00.00.021.2

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4.2743.1133.1572.7762.5922.7722.9713.873.7371.6181.6221.6281.6291.5991.5921.5473.0721.5371.5081.3211.2981.3011.27626103108115118118116115116113111116120118133
Percentage of AssetsFairValueDisclosure0.50.40.50.50.50.50.60.70.60.30.30.30.30.40.40.40.70.40.30.30.30.30.35.00.00.021.80.00.00.00.00.00.00.00.00.00.035.8

us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6060525151523350648057
Percentage of AssetsFairValueDisclosure6.97.78.09.59.810.06.49.411.213.09.8

us-gaap:Capital dei:LegalEntity

us-gaap:Capital

laz:CombinedEuropeanRegulatedGroup


Capitaldei:
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-06-302015-03-312014-12-31
Value176184168177182211157157197176170167158159176175165179201180
Percentage of Capital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:CompagnieFinanciereLazardFreresSas


Capitaldei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value150141147141134124127161168125136129130144140137142133131133132136130134133
Percentage of Capital0.080.080.00.080.170.370.30.079.880.086.30.066.181.982.10.084.984.382.50.075.377.478.60.074.5

laz:LazardFreresAndCompanyLimitedLiabilityCompany


Capitaldei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value145142170170541061341339062174711096515625413779182737490118207112
Percentage of Capital0.080.692.10.032.460.273.80.042.939.6110.70.055.537.291.40.082.450.4114.80.042.451.471.40.062.8

laz:OtherUSAndNonUSSubsidiaries


Capitaldei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value23220821415415914515315316315114914815814016215114712012311010310012110811697111100
Percentage of Capital0.0118.1116.10.094.581.784.40.077.296.294.60.080.179.595.00.087.976.477.50.058.557.073.50.064.848.261.80.0

laz:UnitedKingdomSubsidiary


Capitaldei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1681851841631541801751481671751621651661961921901751281251311311491181191151208691
Percentage of Capital0.0105.399.70.091.7101.896.60.079.3111.8102.90.084.3111.5112.70.0105.181.178.80.074.685.271.60.064.259.747.90.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value138912311246148311581132
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value138912311246148311581132
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0

us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations

us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4441404143403939383737383535343329353334343433464344676462596060656178747566100999220
Percentage of CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value444338352934436265
Percentage of CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value444338352934436265
Percentage of CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value444338352934436265
Percentage of CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value2705260325682344209219152455228822602188229121861882186324541941174616071556
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockHeldBySubsidiary

us-gaap:CommonStockHeldBySubsidiary


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3532592812822833003329498727387565164374104373843192612732031779110414115997227191
Percentage of CommonStockHeldBySubsidiary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockHeldBySubsidiary us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value281332756437
Percentage of CommonStockHeldBySubsidiary100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
Period End2020-12-312019-12-312018-12-312017-12-31
Value90978045
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:InvestmentType

us-gaap:DebtInstrumentCarryingAmount

laz:SeniorBorrowingsOutstanding


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value17001700145012001200
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateEffectivePercentage

laz:LazardGroupFourPointFiveZeroPercentSeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.674.674.674.680.04680.04680.04680.04680.04680.04680.04680.0468
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

laz:LazardGroupFourPointThreeSevenFivePercentSeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.534.534.534.540.04540.04540.04540.04540.04540.0454
Percentage of DebtInstrumentInterestRateEffectivePercentage97.097.097.097.097.097.097.097.097.097.0

laz:LazardGroupThreePointSevenFivePercentSeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.873.873.873.870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.03870.0387
Percentage of DebtInstrumentInterestRateEffectivePercentage82.982.982.982.782.782.782.782.782.782.782.70.00.00.00.00.00.00.00.00.00.0

laz:LazardGroupThreePointSixTwoFivePercentSeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3.763.763.763.760.03760.03760.03760.03760.03760.03760.03760.03760.03760.03760.03760.03760.03760.03760.0376
Percentage of DebtInstrumentInterestRateEffectivePercentage80.580.580.580.380.380.380.380.380.380.380.380.30.00.00.00.00.00.00.0

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1616171819192021212215168.7239.179.617101010117.8628.2398.6159.7447.162
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet us-gaap:DebtInstrument

laz:LazardGroupFourPointFiveZeroPercentSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.1426.3556.5687.1427.3667.597.8148.0388.3238.5488.7749.0
Percentage of DeferredFinanceCostsNet38.338.238.138.638.538.338.238.138.137.655.755.2

laz:LazardGroupFourPointThreeSevenFivePercentSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.9526.1456.3386.7836.9847.1857.3867.5877.8768.08
Percentage of DeferredFinanceCostsNet37.236.936.736.636.536.336.136.036.035.5

laz:LazardGroupThreePointSevenFivePercentSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1.7121.831.9482.0622.182.2982.4162.5342.6522.772.8883.0063.1243.2433.3613.4793.5973.7143.8333.9854.1044.2234.342
Percentage of DeferredFinanceCostsNet10.711.011.311.111.411.611.812.012.112.218.318.435.835.434.934.634.233.933.650.749.849.044.6

laz:LazardGroupThreePointSixTwoFivePercentSeniorNotes


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.212.3082.4052.5262.6252.7232.8222.923.0183.1173.2153.3143.4123.513.6093.7073.8063.9043.998
Percentage of DeferredFinanceCostsNet13.813.913.913.613.713.813.813.913.813.720.420.339.138.337.536.836.235.635.1

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value492506538557563569586601589591597610618638650109911131135107511071123112611301113125559
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7177377357901230127911781404140612791295
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5762353453363658302539
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1065000.01815000.01764000.01537000.0850000.0840000.0950000.0
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value181167159175197204258250243196207
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value352926212715151515159.839
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3328192634283970504135
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value11121417261721
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value811744655763718694764709656575519
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanSponsorLocation

country:US


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value34322835
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation4.24.34.44.6

us-gaap:ForeignPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value777712626728684
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation95.895.795.695.495.3

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-1