WTFC


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets
dei:LegalEntity

us-gaap:CapitalToRiskWeightedAssets
dei:LegalEntity

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:GainLossOnInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

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

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:MarketingAndAdvertisingExpense

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
dei:LegalEntity
us-gaap:TierOneRiskBasedCapital
us-gaap:FairValueByMeasurementBasis
us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

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

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:OtherAssets

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents

us-gaap:EquipmentExpense

us-gaap:EquitySecuritiesFvNiUnrealizedGain

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:FinancialInstrument
us-gaap:FairValueByAssetClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:GainLossOnFairValueHedgesRecognizedInEarnings
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:GainLossOnSaleOfMortgageLoans

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainsLossesOnSalesOfOtherRealEstate
us-gaap:StatementBusinessSegments
us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments
us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeSecuritiesOther

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio

us-gaap:InterestAndFeeIncomeLoansHeldForSaleMortgages
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:InterestExpenseBorrowings

us-gaap:InterestExpenseDeposits
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm

us-gaap:InterestExpenseJuniorSubordinatedDebentures
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpenseOtherLongTermDebt

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestIncomeDebtSecuritiesTradingOperating

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:LaborAndRelatedExpense

us-gaap:MarketableSecuritiesGainLoss

us-gaap:MarketableSecuritiesRealizedGainLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments

us-gaap:MortgageServicingRightsMSRImpairmentRecovery

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OccupancyNet

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherNoninterestExpense

us-gaap:OtherRevenueExpenseFromRealEstateOperations

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale

us-gaap:PaymentsForProceedsFromFederalHomeLoanBankStock

us-gaap:PaymentsForProceedsFromLimitedPartnership

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PreferredStockDividendsAndOtherAdjustments

us-gaap:ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromPaymentsForInInterestBearingDepositsInBanks

us-gaap:ProceedsFromRepaymentsOfOtherDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProceedsFromSaleOfMortgageLoansHeldForSale

us-gaap:ProceedsFromSaleOfTradingSecuritiesHeldforinvestment

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanAndLeaseLosses
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions

us-gaap:ServicingAssetAtFairValueDisposals
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueIssuedForServices
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:TradingGainsLosses

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

wtfc:AccretionAmortizationOfDiscountPremiumOnLoans

wtfc:AssetsNonrecurringFairValueLossesRecognized

wtfc:AssetsPercentage
us-gaap:StatementBusinessSegments

wtfc:BankOwnedLifeInsuranceNetOfClaims

wtfc:ChangeInContributionInterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:ChangeInContributionNonInterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:ChangeInContributionOperatingIncomeLoss
us-gaap:StatementBusinessSegments

wtfc:ChangeInContributionProvisionForLoanLeaseAndOtherLosses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:ChangeInContributionProvisionForLoanLeaseAndOtherLossesPercentage
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:ChangeInContributionRevenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:EarlyBuyoutExercisesOfGuaranteedMortgageLoansHeldForSale

wtfc:FeesAndCommissionsMortgageBanking1

wtfc:FeesFromCoveredCallOptions

wtfc:FinancingReceivableAllowanceForCreditLossesOtherAdjustmentsExpenseBenefit
us-gaap:FinancingReceivablePortfolioSegment

wtfc:ImpairedLoansFairValueLossesRecognized

wtfc:InterestIncomeExpenseNetPercentage
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:InterestIncomeFederalHomeLoanBanksAndFederalReserveBankStock

wtfc:InterestIncomeOnBrokerageCustomerReceivables

wtfc:IssuanceOfCommonSharesResultingFromExerciseOfStockOptionsEmployeeStockPurchasePlanAndConversionOfCommonStockWarrants

wtfc:LessorOperatingLeaseDepreciationExpense

wtfc:LoanForgiveness

wtfc:MarketableSecuritiesGrossRealizedGainsExcludingOtherThanTemporaryImpairments

wtfc:MarketableSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments

wtfc:NonInterestIncomeExcludingNetSecuritiesLossesGains

wtfc:NonInterestIncomePercentage
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:OperatingIncomeLossPercentage
us-gaap:StatementBusinessSegments

wtfc:OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentBeforeTax

wtfc:OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentNetOfTax

wtfc:OtherComprehensiveIncomeLossSecuritiesTransferredFromAvailableForSaleToHeldToMaturityAdjustmentTaxEffect

wtfc:PaymentstoAcquireEquitySecuritieswithoutReadilyDeterminableFairValue

wtfc:ProceedsFromPaymentsToFederalHomeLoanBankBorrowings

wtfc:ProceedsfromSaleofEquitySecuritiesWithReadilyDeterminableFairValue

wtfc:ProceedsfromSalesandCapitalDistributionsofEquitySecuritiesWithoutReadilyDeterminableFairValue

wtfc:RealEstateAcquiredThroughForeclosureFairValueLossesRecognized

wtfc:ReclassificationFromAccumulatedOtherComprehensiveIncomeAmortizationOfUnrealizedGainsLossesOnInvestmentSecuritiesTransferredToHeldToMaturityFromAvailableForSaleNetOfTax
us-gaap:StatementEquityComponents

wtfc:RevenuesPercentage
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtfc:SecuritiesOwnedNotReadilyMarketablePeriodIncreaseDecrease

wtfc:ServicingAssetatFairValueEarlyBuyoutOption

wtfc:ServicingAssetsAtFairValueAdditionsFromLoansSoldWithServicingRetained
us-gaap:AwardType
wtfc:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAddedByPerformanceFactorAtVestingWeightedAverageGrantDateFairValue

wtfc:StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercised
us-gaap:StatementEquityComponents

wtfc:WeightedAverageDecreaseStatedInterestRateBasisPoints

us-gaap:AccountsPayableAndOtherAccruedLiabilities

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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:BankOwnedLifeInsurance
dei:LegalEntity
us-gaap:Capital
dei:LegalEntity
us-gaap:CapitalRequiredToBeWellCapitalized

us-gaap:CashAndDueFromBanks
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:FairValueByMeasurementBasis
us-gaap:CashCashEquivalentsAndFederalFundsSold
dei:LegalEntity
us-gaap:CommonEquityTierOneCapital

us-gaap:CommonEquityTierOneCapitalRatio
dei:LegalEntity
dei:LegalEntity
us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

us-gaap:ContractWithCustomerLiability

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType
us-gaap:DebtInstrumentMeasurementInput
us-gaap:Range, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRestricted

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLoss

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
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us-gaap:TimeDepositMaturitiesYearFive

us-gaap:TimeDepositMaturitiesYearFour

us-gaap:TimeDepositMaturitiesYearThree

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits

us-gaap:TimeDeposits100000OrMore
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:TradingSecurities
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency

us-gaap:TradingSecuritiesDebt
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency

us-gaap:UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
us-gaap:DerivativeInstrumentRisk
wtfc:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesinNetGainLossfromCashFlowHedgesGross
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

wtfc:AdministrativeServicesReceivable

wtfc:AllowanceForCreditLoss

wtfc:AllowanceForCreditLossExcludingAccruedInterest

wtfc:CardRelatedFeeReceivable

wtfc:ChangeInContributionAssets
us-gaap:StatementBusinessSegments

wtfc:CustomerBalancesMaintainedByClearingBrokerAndSubjectToIndemnification

wtfc:DebtCurrentandNoncurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
wtfc:DebtInstrumentInterestRateStatedPercentageAdjustedForHedge
us-gaap:LongtermDebtType

wtfc:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss

wtfc:DebtSecuritiesHeldToMaturityNetOfAllowanceForCreditLosses

wtfc:DeferredTaxAssetDiscountOnPurchasedLoans

wtfc:DeferredTaxAssetsAllowanceForCreditLosses

wtfc:DeferredTaxAssetsNonaccruedInterest

wtfc:DeferredTaxAssetsOtherRealEstateOwned

wtfc:DeferredTaxAssetsRightOfUseLiability

wtfc:DeferredTaxAssetsTaxDeferredExpenseLoanFeesAndCosts

wtfc:DeferredTaxLiabilitiesFairValueAdjustmentOnLoans

wtfc:DeferredTaxLiabilitiesNetUnrealizedLossesOnDerivativesIncludedInOtherComprehensiveIncome

wtfc:DeferredTaxLiabilitiesRightOfUseAsset

wtfc:DepositsNOWandInterestBearingDemandDeposits

wtfc:DepositsPercentage
us-gaap:FairValueByMeasurementBasis
wtfc:DepositsWithStatedMaturities
us-gaap:SubsequentEventType
wtfc:DisposalGroupDeposits

wtfc:EquitySecuritiesFVNIAccumulatedUnrealizedGain

wtfc:EquitySecuritiesFVNIAccumulatedUnrealizedLoss
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods, us-gaap:LongtermDebtType
wtfc:ExcessPledgedCollateral
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods, us-gaap:ShortTermDebtType

wtfc:FederalHomeLoanBankAdvancesHavingVaryingPutDates
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:SubsequentEventType
wtfc:FinancingReceivableAuthorizedToFund
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:SubsequentEventType
wtfc:FinancingReceivableAuthorizedToFundNumberOfContracts

wtfc:FinancingReceivableBeforeAllowanceForCreditLossModificationsRelatedToCOVID19MigratedFromPassToSpecialMentionOrSubstandard
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
wtfc:ImpairedFinancingReceivableMeasurementInput
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDue

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueAfterYearFive

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueNextTwelveMonths

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueYearFive

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueYearFour

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueYearThree

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityPaymentsDueYearTwo

wtfc:LesseeOperatingLeaseAndFinanceLeaseLiabilityUndiscountedExcessAmount

wtfc:LiabilityForLossIndemnificationClaimsOnResidentialMortgageLoansPreviouslySoldToInvestors
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType
wtfc:LoansHeldForInvestmentMeasurementInput
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:FairValueByMeasurementBasis
wtfc:LoansHeldforInvestment

wtfc:LoansHeldforInvestmentFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:FinancingReceivablePortfolioSegment

wtfc:MortgageBrokerFeeReceivable

wtfc:NOWandInterestBearingDemandDepositsPercentage

wtfc:NonInterestBearingPercentage
us-gaap:FairValueByMeasurementBasis
wtfc:NonMaturityDepositsFairValueDisclosure

wtfc:OperatingLeaseAndFinanceLeaseLiability
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:Collateral
wtfc:OtherRealEstateForeclosedAssetsandRepossessedAssetsInProcess

wtfc:OwnershipInterestPercentageInUnconsolidatedSubsidiaryTrusts
us-gaap:FinancingReceivablePortfolioSegment
wtfc:PercentageOfLoansAndLeasesReceivableGrossCarryingAmount
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:AwardType
wtfc:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedButNotIssuableInPeriodWeightedAverageGrantDateFairValue

wtfc:TimeDepositsTwoHundredFiftyThousandDollarsOrMore

wtfc:TradeDateSecuritiesPayable

wtfc:TradeDateSecuritiesReceivable

wtfc:UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiumsPaidBySmallBusinessAdministrationUnderPaycheckProtectionProgram

wtfc:UnfundedCommitmentsToInvestInPartnerships

wtfc:WealthManagementDeposits

wtfc:WealthManagementDepositsPercentage

wtfc:WealthManagementReceivable

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Liabilities
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock Cash
BanksAndOrInsurance
Interest And Dividend Income Operating
AssetsBanks
Federal Funds Sold And Securities Purchased Under Agreements To Resell
LiabilitiesBanks
Short Term Borrowings

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 █████████▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁58.7758.72758.47358.32358.29458.26657.95156.82556.79456.76556.51856.48656.43756.36456.06855.9455.80252.60551.97851.81151.70848.60848.46948.42247.76347.47546.88146.76646.62746.33246.18139.99237.98537.27237.10836.64736.57336.52235.98235.92634.98834.94734.86431.14531.08431.044
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁57.77557.585NA58.04657.98158.195NA57.46357.36157.228NA57.28457.22757.025NA56.76256.58756.427NA55.72653.10552.268NA52.20751.72351.472NA50.8850.92250.704NA50.15449.8449.439NA48.67644.09943.737NA46.1010.04340942.722NA32.1050.03234127.081
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁57.04956.904NA57.59757.56757.62NA56.6956.66256.529NA56.36656.29956.137NA55.79654.77552.267NA51.67949.1448.448NA48.15847.56747.239NA46.63946.5246.195NA39.33137.48636.976NA36.38136.32936.207NA35.550.03497134.928NA31.1170.03107425.942
us-gaap:EarningsPerShareBasic ▆█▆▆▂▄▅▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▁▂▂▂1.722.571.641.680.341.051.461.711.41.541.381.591.551.421.191.141.151.050.980.960.940.940.660.710.890.790.780.830.790.710.820.860.850.80.750.820.630.610.510.820.310.44-0.060.490.260.43
us-gaap:EarningsPerShareDiluted ▆█▆▆▂▄▅▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃▂▂▁▂▂▂1.72.541.631.670.341.041.441.691.381.521.351.571.531.41.171.121.111.00.940.920.90.90.640.690.850.760.750.790.760.680.70.710.690.650.610.660.520.50.410.650.250.36-0.060.470.250.41
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets NANA1e-05NANANA9.6e-08NANANA9.700000000000001e-08NANANA9.9e-08NANANA9.700000000000001e-08NANANA1.0000000000000001e-07NANANA1.16e-07NANANA1.22e-07NANANA1.2099999999999998e-07NANANA1.18e-07NANANA1.25e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:BarringtonBankNANA1.1400000000000001e-05NANANA1.19e-07NANANA1.09e-07NANANA1.17e-07NANANA1.11e-07NANANA1.06e-07NANANA1.1e-07NANANA1.05e-07NANANA1.28e-07NANANA1.2e-07NANANA1.14e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:BeverlyBankNANA1.1400000000000001e-05NANANA1.11e-07NANANA1.14e-07NANANA1.13e-07NANANA1.1e-07NANANA9.2e-08NANANA1.09e-07NANANA1.03e-07NANANA1.0699999999999999e-07NANANA1.09e-07NANANA1.2e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:CrystalLakeBankNANA1.06e-05NANANA1.17e-07NANANA1.11e-07NANANA1.08e-07NANANA1.12e-07NANANA1.14e-07NANANA1.24e-07NANANA1.2099999999999998e-07NANANA1.34e-07NANANA1.19e-07NANANA1.3e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:HinsdaleBankNANA1.18e-05NANANA1.22e-07NANANA1.13e-07NANANA1.1e-07NANANA1.12e-07NANANA1.16e-07NANANA1.0699999999999999e-07NANANA1.08e-07NANANA1.1500000000000001e-07NANANA1.11e-07NANANA1.09e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:LakeForestBankNANA1.13e-05NANANA1.14e-07NANANA1.19e-07NANANA1.1e-07NANANA1.12e-07NANANA1.0199999999999999e-07NANANA1.03e-07NANANA1.1e-07NANANA1.0199999999999999e-07NANANA9.9e-08NANANA7.9e-08NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:LibertyvilleBankNANA1.05e-05NANANA1.11e-07NANANA1.13e-07NANANA1.08e-07NANANA1.0699999999999999e-07NANANA1.09e-07NANANA1.08e-07NANANA1.06e-07NANANA1.08e-07NANANA1.0199999999999999e-07NANANA9.700000000000001e-08NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:NorthbrookBankNANA1.09e-05NANANA1.19e-07NANANA1.05e-07NANANA1.0199999999999999e-07NANANA9.8e-08NANANA9.8e-08NANANA1.0199999999999999e-07NANANA1.01e-07NANANA1.1e-07NANANA1.3200000000000002e-07NANANA1.1500000000000001e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:OldPlankTrailBankNANA1.09e-05NANANA1.12e-07NANANA1.1e-07NANANA1.11e-07NANANA1.0699999999999999e-07NANANA1.03e-07NANANA1.2e-07NANANA1.22e-07NANANA1.31e-07NANANA1.05e-07NANANA1.16e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:SchaumburgBankNANA1.05e-05NANANA1.16e-07NANANA1.08e-07NANANA1.13e-07NANANA1.09e-07NANANA9.4e-08NANANA1.03e-07NANANA1.03e-07NANANA1.08e-07NANANA1.18e-07NANANA1.0399999999999999e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:StCharlesBankNANA1.11e-05NANANA1.14e-07NANANA1.1e-07NANANA1.1e-07NANANA1.1500000000000001e-07NANANA1.0399999999999999e-07NANANA1.06e-07NANANA1.0399999999999999e-07NANANA1.0399999999999999e-07NANANA9.6e-08NANANA1.25e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:StateBankOfLakesNANA1.08e-05NANANA1.09e-07NANANA1.0699999999999999e-07NANANA1.03e-07NANANA1.01e-07NANANA9.5e-08NANANA1.03e-07NANANA1.11e-07NANANA9.9e-08NANANA9.3e-08NANANA1.05e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:TownBankNANA1.11e-05NANANA1.1e-07NANANA1.08e-07NANANA1.09e-07NANANA1.08e-07NANANA1.1500000000000001e-07NANANA1.16e-07NANANA1.05e-07NANANA1.06e-07NANANA1.1e-07NANANA1.08e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:VillageBankNANA1.09e-05NANANA1.08e-07NANANA1.05e-07NANANA1.12e-07NANANA1.0399999999999999e-07NANANA1.03e-07NANANA1.06e-07NANANA1.03e-07NANANA1.0699999999999999e-07NANANA1.1e-07NANANA1.22e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:WheatonBankNANA1.07e-05NANANA1.1e-07NANANA1.08e-07NANANA1.0199999999999999e-07NANANA9.8e-08NANANA9.5e-08NANANA1.06e-07NANANA1.18e-07NANANA1.23e-07NANANA1.0699999999999999e-07NANANA1.28e-07NANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity wtfc:WintrustBankNANA1.05e-05NANANA1.11e-07NANANA1.0199999999999999e-07NANANA9.6e-08NANANA9.6e-08NANANA9.3e-08NANANA8e-08NANANA8.1e-08NANANANANANANANANANANANANANANA
us-gaap:CapitalToRiskWeightedAssets NANA1.26e-05NANANA1.22e-07NANANA1.16e-07NANANA1.2e-07NANANA1.19e-07NANANA1.22e-07NANANA1.3e-07NANANA1.29e-07NANANA1.31e-07NANANA1.3e-07NANANA1.3800000000000002e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:BarringtonBankNANA1.18e-05NANANA1.2099999999999998e-07NANANA1.11e-07NANANA1.2e-07NANANA1.1500000000000001e-07NANA1.14e-071.13e-071.16e-071.14e-071.11e-071.19e-07NANANA1.1e-07NANANA1.35e-07NANANA1.27e-07NANANA1.25e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:BeverlyBankNANA1.21e-05NANANA1.1500000000000001e-07NANANA1.18e-07NANANA1.17e-07NANANA1.14e-07NANA9.700000000000001e-081.11e-071.01e-071.0199999999999999e-071.1e-071.13e-07NANANA1.12e-07NANANA1.11e-07NANANA1.17e-07NANANA1.29e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:CrystalLakeBankNANA1.1400000000000001e-05NANANA1.2099999999999998e-07NANANA1.16e-07NANANA1.13e-07NANANA1.18e-07NANANA1.19e-07NANANA1.29e-07NANANA1.3e-07NANANA1.45e-07NANANA1.3e-07NANANA1.4099999999999998e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:HinsdaleBankNANA1.2699999999999999e-05NANANA1.26e-07NANANA1.19e-07NANANA1.1500000000000001e-07NANANA1.17e-07NANANA1.2099999999999998e-07NANANA1.14e-07NANANA1.14e-07NANANA1.22e-07NANANA1.23e-07NANANA1.27e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:LakeForestBankNANA1.2e-05NANANA1.2e-07NANANA1.25e-07NANANA1.16e-07NANANA1.17e-07NANA1.18e-071.13e-071.1e-071.08e-071.08e-071.09e-07NANANA1.17e-07NANANA1.1e-07NANANA1.1e-07NANANA1.13e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:LibertyvilleBankNANA1.1400000000000001e-05NANANA1.17e-07NANANA1.19e-07NANANA1.14e-07NANANA1.14e-07NANA1.17e-071.1500000000000001e-071.12e-071.13e-071.1e-071.14e-07NANANA1.14e-07NANANA1.19e-07NANANA1.3200000000000002e-07NANANA1.3200000000000002e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:NorthbrookBankNANA1.17e-05NANANA1.25e-07NANANA1.11e-07NANANA1.14e-07NANANA1.11e-07NANA1.03e-071.1e-071.0699999999999999e-071.06e-071.06e-071.11e-07NANANA1.1e-07NANANA1.22e-07NANANA1.44e-07NANANA1.23e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:OldPlankTrailBankNANA1.2e-05NANANA1.16e-07NANANA1.14e-07NANANA1.16e-07NANANA1.12e-07NANA1.08e-071.13e-071.18e-071.16e-071.19e-071.24e-07NANANA1.27e-07NANANA1.4699999999999998e-07NANANA1.22e-07NANANA1.3900000000000001e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:SchaumburgBankNANA1.13e-05NANANA1.2e-07NANANA1.14e-07NANANA1.19e-07NANANA1.1500000000000001e-07NANA1.0199999999999999e-071.14e-071.0699999999999999e-071.08e-071.0699999999999999e-071.13e-07NANANA1.14e-07NANANA1.18e-07NANANA1.29e-07NANANA1.24e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:StCharlesBankNANA1.2e-05NANANA1.17e-07NANANA1.14e-07NANANA1.14e-07NANANA1.2e-07NANA1.11e-071.12e-071.09e-071.08e-071.08e-071.11e-07NANANA1.14e-07NANANA1.13e-07NANANA1.1500000000000001e-07NANANA1.34e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:StateBankOfLakesNANA1.1599999999999999e-05NANANA1.1500000000000001e-07NANANA1.11e-07NANANA1.14e-07NANANA1.1500000000000001e-07NANA1.1e-071.11e-071.09e-071.09e-071.09e-071.16e-07NANANA1.19e-07NANANA1.1500000000000001e-07NANANA1.11e-07NANANA1.16e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:TownBankNANA1.18e-05NANANA1.1500000000000001e-07NANANA1.13e-07NANANA1.14e-07NANANA1.13e-07NANANA1.2e-07NANANA1.2099999999999998e-07NANANA1.12e-07NANANA1.1500000000000001e-07NANANA1.22e-07NANANA1.2e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:VillageBankNANA1.19e-05NANANA1.14e-07NANANA1.12e-07NANANA1.19e-07NANANA1.12e-07NANA1.1e-071.12e-071.09e-071.1e-071.05e-071.12e-07NANANA1.1e-07NANANA1.1500000000000001e-07NANANA1.17e-07NANANA1.33e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:WheatonBankNANA1.1400000000000001e-05NANANA1.14e-07NANANA1.13e-07NANANA1.14e-07NANANA1.13e-07NANA1.0199999999999999e-071.1500000000000001e-071.0399999999999999e-071.06e-071.1500000000000001e-071.16e-07NANANA1.3e-07NANANA1.36e-07NANANA1.19e-07NANANA1.3800000000000002e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity wtfc:WintrustBankNANA1.1599999999999999e-05NANANA1.18e-07NANANA1.1500000000000001e-07NANANA1.12e-07NANANA1.12e-07NANA1.09e-071.13e-071.09e-071.11e-071.12e-071.12e-07NANANA1.16e-07NANANANANANANANANANANANANANANA
  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
  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 ▇▇▁▅▅▂▇▆▇▇▇▇▇▇█▆▆▇▆▆▆▆▆▆▇▆▆▆▆▇▄▆▆▆▆▆▆▆3.32.9-3.91.30.54-2.83.02.03.03.33.23.23.43.74.72.42.82.92.52.02.32.51.92.53.02.32.02.22.13.80.22.02.22.31.92.62.32.3NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▆█▇▆▃▅▆▆▅▇▆▅▅▄▅▅▅▄▃▄▄▅▃▄▂▄▃▃▄▃▂▃▁▃▃▃▃▃▂▃▂▂▂▂▃▂105.138147.87117.427107.07128.66589.88790.163105.67386.381115.67495.93580.01481.45955.57568.43270.67778.18463.88221.85954.97655.51171.90921.89651.13313.05145.29343.50132.02760.79140.78318.66638.353-13.8323.27427.99540.13632.39621.25812.87229.54119.34118.4554.74919.07520.82319.948
us-gaap:GainLossOnInvestments █▁1.2851.154NANA0.808-4.359NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▆█▅▅▁▄▅▅▄▅▄▅▅▄▄▄▄▄▄▃▃▃▂▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁144.15206.859134.711137.28430.70387.083116.682134.601110.173118.645107.662122.814121.591108.06695.785104.248101.94688.01888.33285.05479.97178.49756.40862.19770.12663.03561.80265.25863.03156.3457.82258.08256.2552.28648.87152.17341.32937.75931.97450.04618.96527.04822.14232.38520.7925.49
us-gaap:IncomeTaxExpenseBenefit ▆█▅▄▁▄▅▅▄▄▄▅▅▄▄▆▅▄▅▅▄▄▃▄▄▄▃▄▄▃▃▃▃▃▃▃▂▂▂▃▁▂▁▂▁▁39.04153.71133.50729.9699.04424.27130.71835.4828.70729.49928.00530.86632.01126.08527.00438.62237.04929.6433.72431.93929.9329.38620.89623.84226.29523.98323.66925.03424.4921.8422.53422.51921.94320.23418.78219.87115.73414.54912.75319.8447.21510.6467.93712.2877.7819.473
us-gaap:InterestExpense ▃▄▄▅▆▇██▇▆▆▅▄▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▃▄▄▄39.98943.57448.58455.2266.68582.62487.85289.77580.61271.98466.50857.39945.87736.12332.74131.726.77223.17924.23523.51321.79420.72220.28119.83918.34918.46618.99619.00617.3717.3218.27419.38620.82221.623.86725.62627.42130.59132.9736.54136.73938.16641.28544.42144.93446.631
us-gaap:InterestIncomeExpenseNet █▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▂▂▁▁▁279.59261.895259.397255.936263.131261.443261.879264.852266.202261.986254.088247.563238.17225.082219.099215.988204.409192.58190.778184.636175.27171.509167.206165.54156.892151.891153.719151.67149.18144.006142.308141.782135.824130.713132.776132.575128.27125.895124.647118.41108.706109.614112.677102.98104.31495.865
us-gaap:MarketingAndAdvertisingExpense ▇▅▆▅▅▇███▆▆▇▇▅▅▆▅▃▄▅▄▂▃▄▄▃▂▂▂▂▂▂▂▁▂▂▂▁▂▁▁▁▁▁▁▁11.3058.5469.857.887.70410.86212.51713.37512.8459.8589.41411.1211.7828.8247.3829.5728.7265.156.6917.3656.9413.7795.3746.2376.4063.9073.6693.5283.5582.8163.5172.7722.7222.042.7252.5282.1792.0063.2072.1191.441.6141.8811.651.471.314
us-gaap:NetIncomeLoss ▆█▅▆▁▄▅▅▄▅▄▅▅▄▄▄▄▃▃▃▃▃▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁105.109153.148101.204107.31521.65962.81285.96499.12181.46689.14679.65791.94889.5881.98168.78165.62664.89758.37854.60853.11550.04149.11135.51238.35543.83139.05238.13340.22438.54134.535.28835.56334.30732.05230.08932.30225.59523.2119.22130.20211.7516.40214.20520.09813.00916.017
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▆█▆▆▂▄▅▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▂▁▂98.118146.15794.21397.02919.60960.76283.91497.07179.41687.09677.60789.89887.5379.93166.73163.57662.84754.7550.97949.48746.41345.48331.88334.27642.25137.47136.55338.64336.9632.91933.70733.98231.6929.43627.47329.68622.95121.96418.18929.1710.71715.371-1.9715.1558.06611.074
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▃█▅▅▄▁▄▃▂▄▄▄▄-6.44737.25712.8937.623-2.094-28.3713.917-5.014-16.25-3.651-4.0460.1550.792NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▆█▆▇▁▆▅▆▆▃▆▄▄▅▇▆▆▄▅▅█▄▃▆▂▂▂█▂▃▇▃▃▅▇▅2.3092.187.3412.8915.167-11.1452.546-1.4712.5052.277-6.2391.942-1.996-2.897-0.9184.2062.8330.877-2.349-1.6440.6126.038-3.693-6.3371.516-9.045-7.995-9.6856.707-7.4-5.9233.905-6.318-4.866-1.7055.8970.002101NA0.00.0NANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▅▇▅▆█▆▆▆█▇▄▅▃▅▆▇▆▂▆▆█▄▇▃▆▆▅█▆▄▆▁▅▅▆▆▅▅▅▆0.029-5.27816.223-0.2447.00627.0754.1996.5524.91526.52816.278-11.934-8.121-26.406-0.3495.05113.2875.504-32.7491.8615.4722.798-13.61512.778-30.786.2415.368-8.19722.256.283-16.6222.79-48.137-8.778-2.0947.8346.801-1.952-6.349-0.6617.591NANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▆▅▃▅▄▄▄▃▃▃▃▃▂▁▁▁50.73347.76845.22242.79738.45643.65541.18440.83440.06539.38238.238.72237.41138.1836.7734.41534.28333.526NA271.24260.069240.261NA230.493233.905216.432NA209.622203.282189.535NA196.444199.819188.092NA195.52179.205172.918NA185.657145.358150.501NA157.636154.75NA
us-gaap:Revenues ██▁███▂███▂█▇▇▃▇▇▇408.963448.401-1056.208426.529425.124374.685-926.527379.989364.36343.643-839.144347.493333.403310.761-712.451295.719294.381261.345NA271.24260.069240.261NA230.493233.905216.432NA209.622203.282189.535NA196.444199.819188.092NA195.52179.205172.918NA185.657145.358150.501NA157.636154.75NA
  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 ███▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁46738.4545682.20245080.76843731.71843540.01738799.84736620.58334911.90233641.76932358.62131244.84930142.73129464.58828456.77227915.9727358.16226929.26525778.89325668.55325321.75924420.61623488.16822917.16622043.9320799.92420382.27120010.72719169.34518895.68118221.16318097.78317682.54817613.54617074.24717519.61317018.59216576.28216172.01815893.80815914.80414615.89714094.29413980.15614100.36813708.5612839.978
us-gaap:Liabilities ███▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁42399.43941429.69140964.77339657.62939549.79935099.45432929.33331371.57730194.81928986.64927977.27926962.90926357.71725425.52224939.03124449.23724089.80723013.9122972.93622647.28521797.02121069.72620564.89219708.19418534.94218251.19717940.90517140.83716897.44616281.0216197.19415808.98215776.88615248.55915714.90815257.29214854.20814484.09714350.27514386.61713142.51112641.04112543.60712701.45612323.82411475.146
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁46738.4545682.20245080.76843731.71843540.01738799.84736620.58334911.90233641.76932358.62131244.84930142.73129464.58828456.77227915.9727358.16226929.26525778.89325668.55325321.75924420.61623488.16822917.16622043.9320799.92420382.27120010.72719169.34518895.68118221.16318097.78317682.54817613.54617074.24717519.61317018.59216576.28216172.01815893.80815914.80414615.89714094.29413980.15614100.36813708.5612839.978
us-gaap:StockholdersEquity ██▇▇▇▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁4339.0114252.5114115.9954074.0893990.2183700.3933691.253540.3253446.953371.9723267.573179.8223106.8713031.252976.9392908.9252839.4582764.9832695.6172674.4742623.5952418.4422352.2742335.7362264.9822131.0742069.8222028.5081998.2351940.1431900.5891873.5661836.661825.6881804.7051761.31722.0741687.9211543.5331528.1871473.3861453.2531436.5491398.9121384.7361364.832
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:BarringtonBankNANA362.326NANANA313.195NANANA252.189NANANA229.311NANANA198.545NANANA176.489NANANA150.705NANANA122.664NANANA140.037NANANA119.534NANANA104.34NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:BeverlyBankNANA173.168NANANA164.827NANANA141.14NANANA127.561NANANA111.281NANANA76.708NANANA71.197NANANA65.385NANANA59.44NANANA37.612NANANA35.207NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:CrystalLakeBankNANA118.085NANANA119.374NANANA102.404NANANA91.273NANANA89.7NANANA85.521NANANA83.788NANANA79.878NANANA77.962NANANA73.235NANANA74.505NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:HinsdaleBankNANA323.207NANANA328.046NANANA244.036NANANA214.061NANANA201.353NANANA191.553NANANA146.29NANANA144.196NANANA145.38NANANA134.488NANANA128.769NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:LakeForestBankNANA494.957NANANA440.585NANANA402.156NANANA347.924NANANA331.883NANANA256.126NANANA231.448NANANA222.577NANANA209.699NANANA202.206NANANA172.514NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:LibertyvilleBankNANA169.328NANANA164.915NANANA152.939NANANA134.31NANANA126.387NANANA117.965NANANA107.649NANANA103.895NANANA105.251NANANA93.613NANANA85.958NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:NorthbrookBankNANA280.852NANANA260.577NANANA223.849NANANA198.628NANANA167.721NANANA129.514NANANA116.808NANANA131.591NANANA125.192NANANA136.273NANANA83.099NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:OldPlankTrailBankNANA155.975NANANA155.975NANANA145.779NANANA139.366NANANA122.067NANANA100.506NANANA96.689NANANA92.694NANANA66.17NANANA29.072NANANA28.575NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:SchaumburgBankNANA119.335NANANA118.26NANANA108.338NANANA105.733NANANA100.854NANANA71.958NANANA67.427NANANA64.263NANANA62.538NANANA53.741NANANA45.184NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:StCharlesBankNANA153.704NANANA151.665NANANA111.454NANANA102.251NANANA104.843NANANA75.348NANANA67.588NANANA64.922NANANA60.753NANANA51.874NANANA34.279NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:StateBankOfLakesNANA122.183NANANA119.74NANANA107.234NANANA95.52NANANA86.092NANANA76.609NANANA69.176NANANA68.399NANANA61.521NANANA57.627NANANA56.8NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:TownBankNANA236.926NANANA217.958NANANA199.982NANANA180.943NANANA174.234NANANA153.902NANANA125.716NANANA79.843NANANA76.824NANANA75.157NANANA68.572NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:VillageBankNANA176.868NANANA161.666NANANA142.333NANANA136.807NANANA127.028NANANA108.221NANANA97.684NANANA88.961NANANA86.435NANANA77.692NANANA72.284NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:WheatonBankNANA199.134NANANA181.195NANANA159.718NANANA135.009NANANA112.664NANANA96.799NANANA70.632NANANA69.73NANANA64.509NANANA52.911NANANA59.197NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity wtfc:WintrustBankNANA728.787NANANA668.922NANANA545.649NANANA439.061NANANA375.907NANANA311.322NANANA222.845NANANA162.903NANANANANANANANANANANANANANANA
  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 us-gaap:FairValueByMeasurementBasis us-gaap:CarryingReportedAmountFairValueDisclosure█▇▄▄▅▅▃█▄▃▆▃▄▂▃▂▃▁▃▂▃▁▃▂435.009426.377322.474308.695345.057349.427286.476448.814300.992270.823392.2279.993304.642231.464277.591251.952296.161217.148270.045246.947271.575212.3275.795250.655NANANANANANA263.864NANANA315.028NANANANANANANANANANANA
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByMeasurementBasis us-gaap:EstimateOfFairValueFairValueDisclosure█▇▄▄▅▅▃█▄▃▆▃▄▂▃▂▃▁▃▂▃▁▃▂435.009426.377322.474308.695345.057349.427286.476448.814300.992270.823392.2279.993304.642231.464277.591251.952296.161217.148270.045246.947271.575212.3275.795250.655NANANANANANA263.864NANANA315.028NANANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▇▇▃▂▄▄▂█▂▁▆▁▂435.009426.377322.474308.695345.057349.427286.476448.814300.992270.823392.2279.993304.642NA277.591NANANA270.045NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 NANA1139.686NANANA1084.085NANANA968.434NANANA913.959NANANA861.525NANANA826.947NANANA765.798NANANA720.182NANANA666.227NANANA578.462NANANA493.117NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA32.312NANANA25.94NANANA16.179NANANA6.962NANANA4.436NANANA12.61NANANA5.737NANANA17.966NANANA10.353NANANA19.341NANANA5.974NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA169.245NANANA168.066NANANA164.232NANANA147.704NANANA137.428NANANA134.03NANANA128.766NANANA116.906NANANA105.427NANANA101.26NANANA88.059NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType wtfc:BuildingsAndLeaseholdImprovemenetsNANA657.529NANANA646.153NANANA586.968NANANA555.636NANANA533.211NANANA506.977NANANA470.636NANANA440.456NANANA415.502NANANA340.901NANANA296.59NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType wtfc:FurnitureEquipmentAndComputerSoftwareNANA280.6NANANA243.926NANANA201.055NANANA203.657NANANA186.45NANANA173.33NANANA160.659NANANA144.854NANANA134.945NANANA116.96NANANA102.494NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA370.878NANANA329.757NANANA297.265NANANA292.064NANANA264.224NANANA234.691NANANA210.57NANANA188.235NANANA165.022NANANA146.95NANANA129.421NANANA
us-gaap:AmortizationOfIntangibleAssets ▅▅▇▇▇█████▃▂▂▂▂▂▂▂▂▂▃▃▃▃▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▁2.0392.0072.6342.7012.822.8633.0172.9282.9572.9421.4071.1630.9971.0041.0281.0681.1411.1641.1581.0851.2481.2981.3241.350.9341.0131.1711.2021.1561.1631.1891.1541.1641.121.1081.0781.0891.0491.0620.970.704NANANANANA
us-gaap:PropertyPlantAndEquipmentNet ███████▇▇▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▃▃▂▂▂▂▁▁▁▁▁752.375760.522768.808774.288769.909764.583754.328721.856711.214676.037671.169664.469639.345626.687621.895609.978605.211598.746597.301597.263595.792591.608592.256587.348571.498559.281555.228555.241535.281531.763531.947517.942512.928504.803501.205461.905449.608434.7431.512412.478403.577369.785363.696353.445346.806348.182
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA4464.747NANANA4266.278NANANA3660.968NANANA3249.202NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ███████▇▇▇▇▆▅▅▅▅▅▅▅▅▅▅▅▅▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁646.336646.017645.707644.644644.213643.441645.22584.315584.911573.658573.141537.56509.957511.497501.884502.021500.26499.341498.587485.938486.095484.28471.761472.166421.646420.197405.634406.604381.721373.725374.547357.309356.871343.632345.401331.634330.896307.295305.468302.369283.301281.94281.19278.025278.025278.025
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:Trademarks,wtfc:CommunityBanking██████████████▁▁▁▁5.85.85.85.85.85.85.85.85.85.85.85.85.85.80.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▄▄▅▅▆▇▇▇▇▇█▂▁▁31.99734.03536.0438.6741.36844.18547.05743.65746.58846.56649.42427.37821.41422.413NANANANANANANANA24.209NANANA18.811NANANA19.213NANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:CoreDeposits,wtfc:CommunityBanking▅▅▆▆▇▇█▆▇▆▇▃▁▂▂▂▂▃▃▃▃▄▄▄▁▂▂▂▁▁▂▂▂▂▂▃▂▃▃▃19.65721.10722.52623.99725.53327.18228.8824.16325.77124.42525.9616.25310.14610.99211.84512.72213.6414.63815.65814.415.34417.11117.45918.64510.89811.68911.512.5299.54710.56111.58111.20712.21811.73313.01714.32312.97713.70614.1315.02NANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:CustomerLists,wtfc:SpecialtyFinance▁▁▁▁▁▂▂▂▂▂▃▃▃▃▃▄▃▃▃▃▄▄▄▄▄▄▅▅▅▅▆▆▆▆▇▇▇▇██0.2830.3030.3220.3380.3570.3820.4130.4360.4640.4930.5220.560.5910.6320.6740.7140.5790.6090.6410.6710.70.7240.7480.7730.7990.8290.8590.890.9220.9580.9951.0311.0691.1121.1551.1971.2411.291.341.389NANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments wtfc:CustomerListAndOtherIntangibles,wtfc:WealthManagement▂▂▂▃▄▄▅▆▇▇█▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂6.2576.8257.3928.5359.67810.82111.96413.25814.55315.84817.1424.7654.8774.9895.1025.2155.3275.445.5525.6655.7775.896.0026.1156.2276.346.4526.5656.4256.5316.6376.7446.856.6656.7756.8856.9957.1056.66.004NANANANANANA
us-gaap:EquitySecuritiesFvNi ███▅▅▅▅▅▄▅▄▄▄▄▁86.31690.33890.86254.39852.4647.3150.8446.08644.31947.65334.71736.41437.83937.8320.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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
  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 ██▇▇▇▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁4339.0114252.5114115.9954074.0893990.2183700.3933691.253540.3253446.953371.9723267.573179.8223106.8713031.252976.9392908.9252839.4582764.9832695.6172674.4742623.5952418.4422352.2742335.7362264.9822131.0742069.8222028.5081998.2351940.1431900.5891873.5661836.661825.6881804.7051761.31722.0741687.9211543.5331528.1871473.3861453.2531436.5491398.9121384.7361364.832
us-gaap:CommonStockValue █████████▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁58.7758.72758.47358.32358.29458.26657.95156.82556.79456.76556.51856.48656.43756.36456.06855.9455.80252.60551.97851.81151.70848.60848.46948.42247.76347.47546.88146.76646.62746.33246.18139.99237.98537.27237.10836.64736.57336.52235.98235.92634.98834.94734.86431.14531.08431.044
us-gaap:AdditionalPaidInCapital ███████▇▇▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▁▁▁1669.0021663.0081649.991647.0491643.8641652.0631650.2781574.0111569.9691565.1851557.9841553.3531547.5111540.6731529.0351519.5961511.081381.8861365.7811356.7591350.7511194.751190.9881187.4071159.0521156.5421133.9551129.9751125.5511122.2331117.0321118.551066.7961040.0981036.2951018.4171013.4281008.3261001.316997.854969.315967.587965.203682.318680.261677.09
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁2288.9692208.5352080.0132001.9491921.0481917.5581899.631830.1651747.2661682.0161610.5741543.681464.4941387.6631313.6571254.7591198.9971143.9431096.5181051.7481008.464967.882928.211901.652872.69835.669803.4771.519737.542705.234676.935643.228612.821581.131555.023527.55501.139478.16459.457441.268415.297404.58392.354394.323381.969373.903
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ███▇▇▇▅▅▄▄▂▁▂▂▄▄▄▃▃▅▅▄▃▄▃▅▅▄▅▃▃▄▄▇██▇▇▇▇▇▇▇▇▇▇10.13310.10415.382-0.841-0.597-7.603-34.678-38.877-45.429-50.344-76.872-93.15-81.216-73.095-41.835-41.486-46.537-59.824-65.328-32.579-34.44-39.91-62.708-49.093-61.871-31.091-37.332-42.7-34.503-56.753-63.036-46.414-49.204-1.0677.7119.8051.971-4.83-2.8783.4714.132-3.459-5.5123.9434.966-2.847
us-gaap:TreasuryStockValue ███▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁100.363100.363100.36344.89144.89144.8916.9316.7996.656.655.6345.5475.3555.3554.9864.8844.8844.8844.5894.5224.1454.1453.9733.9643.9643.9483.5493.5193.4493.383.08.298.2148.1877.8387.497.3746.5590.1120.0680.050.0740.00.0510.0040.0
us-gaap:StockIssuedDuringPeriodValueNewIssues NANA-0.030.268277.375NANANANANANANANANANANANANA0.0880.0NANA0.0-0.309NANANANANANANANANANANANANANANANANANA104.6910.0-0.128210.545
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANA-0.030.268-10.125NANANANANANANANANANANANANA0.0880.0NANA0.0-0.309NANANANANANANANANANANANANANANANANANA100.8930.0-0.12883.919
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▇▇▁▅▅▂▇▆▇▇▇▇▇▇█▆▆▇▆▆▆▆▆▆▇▆▆▆▆▆▄▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅3.3322.862-3.9151.2550.541-2.8193.0261.9952.9653.3183.153.2483.4153.6834.6982.4142.8282.9182.5252.0262.2682.4841.8392.5313.0152.2712.02.02.0731.6810.2011.972.2152.4131.8122.6212.352.2892.2591.3990.941.0941.5240.6111.0911.414
  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 █▆▃▄▄▁▇▄▄▅▅▆▅▄▆▄▄▅█▄▃▅▄▅431.982216.781-95.313-53.48510.143-379.81288.948-45.184-65.45687.685116.081158.37780.36622.358252.65923.641-5.0129.741392.0859.654-159.21366.55526.07484.078NANANANANANA101.377214.677-93.9599.681194.45254.778-288.774108.28.587-18.53924.555351.0849.2447.8227.244161.136
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▇█▁▆▆▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇█-1346.988-855.71-1064.318-140.612-4528.612-1448.882-1229.785-978.854-778.71-1031.6-847.812-569.446-847.229-499.011-615.427-468.35-913.633-306.334-480.363-953.736-540.891-517.675-819.104-410.874NANANANANANA-63.294-190.86-90.524103.881-232.072-6.6135.77-292.963-41.508-150.785-531.786-234.30525.194-149.776-284.403-173.287
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▃▁█▄▂▃▂▂▂▁▂▂▁▁▂▁▁▂▂▁▂▁923.638742.8321173.41157.7354514.0991891.643778.4991171.86874.335822.538843.938386.42840.041430.526388.407400.5997.646123.696111.376919.454759.379387.625818.17325.242NANANANANANA-104.85673.521204.572-305.389139.836-227.11284.158175.66141.903145.978516.805-114.865-105.838233.56287.641-24.571
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▇▅▄▅▆▁█▅▂▇▄8.632103.90313.779-36.362-4.3762.951-162.338147.82230.169-121.377112.207-24.649NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 █▆▃▄▄▁▇▄▄▅▅▆▅▄▆▄▄▅█▄▃▅▄▅431.982216.781-95.313-53.48510.143-379.81288.948-45.184-65.45687.685116.081158.37780.36622.358252.65923.641-5.0129.741392.0859.654-159.21366.55526.07484.078NANANANANANA101.377214.677-93.9599.681194.45254.778-288.774108.28.587-18.53924.555351.0849.2447.8227.244161.136
us-gaap:NetIncomeLoss ▆█▅▆▁▄▅▅▄▅▄▅▅▄▄▄▄▃▃▃▃▃▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁105.109153.148101.204107.31521.65962.81285.96499.12181.46689.14679.65791.94889.5881.98168.78165.62664.89758.37854.60853.11550.04149.11135.51238.35543.83139.05238.13340.22438.54134.535.28835.56334.30732.05230.08932.30225.59523.2119.22130.20211.7516.40214.20520.09813.00916.017
us-gaap:ShareBasedCompensation ▇▇▁▅▅▂▇▆▇▇▇▇▇▇█▆▆▇▆▆▆▆▆▆▇▆▆▆▆▆▄▆▆▆▆▆▆▆▆▅▅▅▄▆▅▅3.3322.862-3.9151.2550.541-2.8193.0261.9952.9653.3183.153.2483.4153.6834.6982.4142.8282.9182.5252.0262.2682.4841.8392.5313.0152.2712.02.02.0731.6810.2011.972.2152.4131.8122.6212.352.2892.2591.3990.941.0940.1192.0161.0911.414
  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 ▆▇▇█▁▆▆▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇█-1346.988-855.71-1064.318-140.612-4528.612-1448.882-1229.785-978.854-778.71-1031.6-847.812-569.446-847.229-499.011-615.427-468.35-913.633-306.334-480.363-953.736-540.891-517.675-819.104-410.874NANANANANANA-63.294-190.86-90.524103.881-232.072-6.6135.77-292.963-41.508-150.785-531.786-234.30525.194-149.776-284.403-173.287
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▁▂▄▄▅▇▄▄▃▄▅▅▃▄▃▄▃▂▁▄▂▃▁▄▂▂▃▂▂▃▃▂▂▆▄▄▂▅▂█▃▃▃▁▁7.7254.3889.25416.2616.74721.38530.57120.15317.68913.60815.63420.32120.73811.5819.61113.32315.43710.8235.6474.04115.5588.67714.0843.89719.5765.9027.15413.5969.797.59613.45511.1426.5896.50828.79318.23718.7958.50124.3636.02838.18410.55714.61410.8292.9192.148
  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 ▂▂▃▁█▄▂▃▂▂▂▁▂▂▁▁▂▁▁▂▂▁▂▁923.638742.8321173.41157.7354514.0991891.643778.4991171.86874.335822.538843.938386.42840.041430.526388.407400.5997.646123.696111.376919.454759.379387.625818.17325.242NANANANANANA-104.85673.521204.572-305.389139.836-227.11284.158175.66141.903145.978516.805-114.865-105.838233.56287.641-24.571
us-gaap:PaymentsOfDividends ██▇█▆▆▅▅▅▅▄▄▄▄▃▃▃▄▃▃▃▃▃▃▃▃▂▂▂▂▁▂▁▂▁▂▁▂▁▂▁▂▂▃▂▂24.67524.62623.1426.41418.16918.16716.49916.22216.21616.17312.76312.76212.74912.7139.8839.8649.84310.9539.8389.8319.4599.449.4026.8936.816.7836.2526.2476.2336.2011.8276.1562.3363.5741.5826.3141.04.2611.04.1991.0014.1445.4096.9264.1256.316
us-gaap:PaymentsForRepurchaseOfCommonStock NANA54.9390.00.07537.0410.1320.1490.01.0160.0870.1920.00.3690.1020.00.00.2950.0670.3770.00.1720.0090.00.0160.3990.030.070.0690.383.0520.0760.0270.3490.3480.1160.8156.4470.0440.018-0.0240.0740.0690.0470.0040.098
  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:DebtInstrumentInterestRateStatedPercentage NANA2.43e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA2.67e-082.7300000000000003e-082.51e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:CommunityFinancialSharesStatutoryTrustTwo,us-gaap:JuniorSubordinatedDebtNANA1.8400000000000002e-06NANANA3.5099999999999997e-08NANANA4.41e-08NANANA3.2099999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:FirstNorthwestCapitalTrustOne,us-gaap:JuniorSubordinatedDebtNANA3.25e-06NANANA4.94e-08NANANA5.8e-08NANANA4.6899999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:NorthviewCapitalTrustOne,us-gaap:JuniorSubordinatedDebtNANA3.2099999999999998e-06NANANA4.9099999999999996e-08NANANA5.54e-08NANANA4.38e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:SuburbanIllinoisCapitalTrustTwo,us-gaap:JuniorSubordinatedDebtNANA1.9699999999999998e-06NANANA3.64e-08NANANA4.54e-08NANANA3.34e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:TownBanksharesCapitalTrustOne,us-gaap:JuniorSubordinatedDebtNANA3.2099999999999998e-06NANANA4.9099999999999996e-08NANANA5.54e-08NANANA4.38e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustCapitalTrustEight,us-gaap:JuniorSubordinatedDebtNANA1.7e-06NANANA3.39e-08NANANA4.2500000000000003e-08NANANA3.1399999999999997e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustCapitalTrustSeven,us-gaap:JuniorSubordinatedDebtNANA2.17e-06NANANA3.84e-08NANANA4.74e-08NANANA3.54e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustCapitalTrustThree,us-gaap:JuniorSubordinatedDebtNANA3.49e-06NANANA5.24e-08NANANA5.69e-08NANANA4.61e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustCaptialTrustNine,us-gaap:JuniorSubordinatedDebtNANA1.85e-06NANANA3.5200000000000004e-08NANANA4.4200000000000005e-08NANANA3.22e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustStatutoryTrustFive,us-gaap:JuniorSubordinatedDebtNANA2.8500000000000002e-06NANANA4.54e-08NANANA5.4e-08NANANA4.29e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType wtfc:WintrustStatutoryTrustFour,us-gaap:JuniorSubordinatedDebtNANA3.05e-06NANANA4.74e-08NANANA5.6e-08NANANA4.4900000000000005e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType wtfc:ReceivablesPurchaseAgreementNANA1.193e-06NANANA2.7289999999999998e-08NANANA2.936e-08NANANA2.214e-08NANANA1.632e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value5858585858585756565656565656565555525151514848484747464646464639373737363636353534343431313127
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2

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
Value5757585758575757575757565656555352525151505050504949484443460.04340942320.03234127
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
Value5756575757565656565656555452514948484747464646393736363636350.03497134310.03107425
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
Value1.722.571.641.680.341.051.461.711.41.541.381.591.551.421.191.141.151.050.980.960.940.940.660.710.890.790.780.830.790.710.820.860.850.80.750.820.630.610.510.820.310.44-0.060.490.260.43
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
Value1.72.541.631.670.341.041.441.691.381.521.351.571.531.41.171.121.111.00.940.920.90.90.640.690.850.760.750.790.760.680.70.710.690.650.610.660.520.50.410.650.250.36-0.060.470.250.41
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

Tier One Risk Based Capital To Risk Weighted Assets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.00.0960.0970.0990.0970.10.1160.1220.1210.1180.125
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity

wtfc:BarringtonBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.40.1190.1090.1170.1110.1060.110.1050.1280.120.114
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets114.0124.0112.4118.2114.4106.094.886.1105.8101.791.2

wtfc:BeverlyBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.40.1110.1140.1130.110.0920.1090.1030.1070.1090.12
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets114.0115.6117.5114.1113.492.094.084.488.492.496.0

wtfc:CrystalLakeBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.60.1170.1110.1080.1120.1140.1240.1210.1340.1190.13
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets106.0121.9114.4109.1115.5114.0106.999.2110.7100.8104.0

wtfc:HinsdaleBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.80.1220.1130.110.1120.1160.1070.1080.1150.1110.109
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets118.0127.1116.5111.1115.5116.092.288.595.094.187.2

wtfc:LakeForestBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.30.1140.1190.110.1120.1020.1030.110.1020.0990.079
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets113.0118.8122.7111.1115.5102.088.890.284.383.963.2

wtfc:LibertyvilleBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.50.1110.1130.1080.1070.1090.1080.1060.1080.1020.097
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets105.0115.6116.5109.1110.3109.093.186.989.386.477.6

wtfc:NorthbrookBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.90.1190.1050.1020.0980.0980.1020.1010.110.1320.115
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets109.0124.0108.2103.0101.098.087.982.890.9111.992.0

wtfc:OldPlankTrailBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.90.1120.110.1110.1070.1030.120.1220.1310.1050.116
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets109.0116.7113.4112.1110.3103.0103.4100.0108.389.092.8

wtfc:SchaumburgBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.50.1160.1080.1130.1090.0940.1030.1030.1080.1180.104
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets105.0120.8111.3114.1112.494.088.884.489.3100.083.2

wtfc:StCharlesBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.10.1140.110.110.1150.1040.1060.1040.1040.0960.125
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets111.0118.8113.4111.1118.6104.091.485.286.081.4100.0

wtfc:StateBankOfLakes


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.80.1090.1070.1030.1010.0950.1030.1110.0990.0930.105
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets108.0113.5110.3104.0104.195.088.891.081.878.884.0

wtfc:TownBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.10.110.1080.1090.1080.1150.1160.1050.1060.110.108
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets111.0114.6111.3110.1111.3115.0100.086.187.693.286.4

wtfc:VillageBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.90.1080.1050.1120.1040.1030.1060.1030.1070.110.122
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets109.0112.5108.2113.1107.2103.091.484.488.493.297.6

wtfc:WheatonBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value10.70.110.1080.1020.0980.0950.1060.1180.1230.1070.128
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets107.0114.6111.3103.0101.095.091.496.7101.790.7102.4

wtfc:WintrustBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value10.50.1110.1020.0960.0960.0930.080.081
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets105.0115.6105.297.099.093.069.066.4

Capital To Risk Weighted Assets

us-gaap:CapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.60.1220.1160.120.1190.1220.130.1290.1310.130.138
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity

wtfc:BarringtonBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.80.1210.1110.120.1150.1140.1130.1160.1140.1110.1190.110.1350.1270.125
Percentage of CapitalToRiskWeightedAssets93.799.295.7100.096.60.092.60.00.00.091.585.3103.197.790.6

wtfc:BeverlyBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.10.1150.1180.1170.1140.0970.1110.1010.1020.110.1130.1120.1110.1170.129
Percentage of CapitalToRiskWeightedAssets96.094.3101.797.595.80.091.00.00.00.086.986.884.790.093.5

wtfc:CrystalLakeBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.40.1210.1160.1130.1180.1190.1290.130.1450.130.141
Percentage of CapitalToRiskWeightedAssets90.599.2100.094.299.297.599.2100.8110.7100.0102.2

wtfc:HinsdaleBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.70.1260.1190.1150.1170.1210.1140.1140.1220.1230.127
Percentage of CapitalToRiskWeightedAssets100.8103.3102.695.898.399.287.788.493.194.692.0

wtfc:LakeForestBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.00.120.1250.1160.1170.1180.1130.110.1080.1080.1090.1170.110.110.113
Percentage of CapitalToRiskWeightedAssets95.298.4107.896.798.30.092.60.00.00.083.890.784.084.681.9

wtfc:LibertyvilleBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.40.1170.1190.1140.1140.1170.1150.1120.1130.110.1140.1140.1190.1320.132
Percentage of CapitalToRiskWeightedAssets90.595.9102.695.095.80.094.30.00.00.087.788.490.8101.595.7

wtfc:NorthbrookBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.70.1250.1110.1140.1110.1030.110.1070.1060.1060.1110.110.1220.1440.123
Percentage of CapitalToRiskWeightedAssets92.9102.595.795.093.30.090.20.00.00.085.485.393.1110.889.1

wtfc:OldPlankTrailBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.00.1160.1140.1160.1120.1080.1130.1180.1160.1190.1240.1270.1470.1220.139
Percentage of CapitalToRiskWeightedAssets95.295.198.396.794.10.092.60.00.00.095.498.4112.293.8100.7

wtfc:SchaumburgBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.30.120.1140.1190.1150.1020.1140.1070.1080.1070.1130.1140.1180.1290.124
Percentage of CapitalToRiskWeightedAssets89.798.498.399.296.60.093.40.00.00.086.988.490.199.289.9

wtfc:StCharlesBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value12.00.1170.1140.1140.120.1110.1120.1090.1080.1080.1110.1140.1130.1150.134
Percentage of CapitalToRiskWeightedAssets95.295.998.395.0100.80.091.80.00.00.085.488.486.388.597.1

wtfc:StateBankOfLakes


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.60.1150.1110.1140.1150.110.1110.1090.1090.1090.1160.1190.1150.1110.116
Percentage of CapitalToRiskWeightedAssets92.194.395.795.096.60.091.00.00.00.089.292.287.885.484.1

wtfc:TownBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.80.1150.1130.1140.1130.120.1210.1120.1150.1220.12
Percentage of CapitalToRiskWeightedAssets93.794.397.495.095.098.493.186.887.893.887.0

wtfc:VillageBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.90.1140.1120.1190.1120.110.1120.1090.110.1050.1120.110.1150.1170.133
Percentage of CapitalToRiskWeightedAssets94.493.496.699.294.10.091.80.00.00.086.285.387.890.096.4

wtfc:WheatonBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11.40.1140.1130.1140.1130.1020.1150.1040.1060.1150.1160.130.1360.1190.138
Percentage of CapitalToRiskWeightedAssets90.593.497.495.095.00.094.30.00.00.089.2100.8103.891.5100.0

wtfc:WintrustBank


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value11.60.1180.1150.1120.1120.1090.1130.1090.1110.1120.1120.116
Percentage of CapitalToRiskWeightedAssets92.196.799.193.394.10.092.60.00.00.086.289.9

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.32.9-3.91.30.54-2.83.02.03.03.33.23.23.43.74.72.42.82.92.52.02.32.51.92.53.02.32.02.22.13.80.22.02.22.31.92.62.32.3
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.00.9-1.30.40.2-0.80.90.60.91.01.01.01.21.41.91.01.21.31.21.01.21.31.01.31.71.41.21.31.32.40.11.21.41.51.21.61.51.5

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1051471171072889901058611595808155687078632154557121511345433260401838-13.832327403221122919184.749192019
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating32.948.438.134.48.726.125.829.824.934.629.926.228.721.327.228.533.829.610.226.428.237.411.727.67.426.625.218.836.525.311.623.8-8.815.317.925.420.813.68.219.113.312.53.112.914.014.0

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-06-302020-03-31
Value1285000.01154000.0808000.0-4359000.0
Percentage of GainLossOnInvestments100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.40.40.2-1.3

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1442061341373087116134110118107122121108951041018888857978566270636165635657585652485241373150182722322025
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating45.167.743.744.19.325.333.438.031.835.533.640.342.841.438.042.144.140.841.140.940.640.830.133.640.037.035.838.237.834.936.036.035.934.331.233.026.524.120.332.313.018.314.422.013.917.9

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-6.866-6.696-6.263-5.667-5.451-1.090.1792.4284.0813.5622.9752.3191.3390.68
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-4.8-3.2-4.6-4.1-17.8-1.30.21.83.73.02.81.91.10.6
Percentage of InterestAndDividendIncomeOperating-2.1-2.2-2.0-1.8-1.7-0.30.10.71.21.10.90.80.50.3
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.5840.210.0210.05-0.3410.4910.0430.40.523-0.0670.0271.001-0.02-0.9750.0140.0390.047-0.0551.5753.3051.441.325-0.079-0.098-0.0240.5240.018-0.153-0.336-0.033-3.3280.0750.0020.2512.5610.4091.109
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments0.40.10.00.0-1.10.60.00.30.5-0.10.00.8-0.0-0.90.00.00.0-0.11.83.91.81.7-0.1-0.2-0.00.80.0-0.2-0.5-0.1-5.80.10.00.55.20.82.7
Percentage of InterestAndDividendIncomeOperating0.20.10.00.0-0.10.10.00.10.2-0.00.00.3-0.0-0.40.00.00.0-0.00.71.60.70.7-0.0-0.1-0.00.30.0-0.1-0.2-0.0-2.10.00.00.21.60.30.7
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value395333299.04424303528292830322627383729333129292023262323252421222221201819151412197.215107.937127.7819.473
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 InterestAndDividendIncomeOperating12.217.610.99.62.77.18.810.08.38.88.710.111.310.010.715.616.013.715.715.315.215.311.112.915.014.113.714.714.713.514.014.014.013.312.012.610.19.38.112.85.07.25.28.35.26.6

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.83-1.784-1.669-1.51-1.453-0.2910.0480.6471.0880.950.7990.6230.360.183
Percentage of IncomeTaxExpenseBenefit-4.7-3.3-5.0-5.0-16.1-1.20.21.83.83.22.92.01.10.7
Percentage of InterestAndDividendIncomeOperating-0.6-0.6-0.5-0.5-0.4-0.10.00.20.30.30.20.20.10.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.1570.0560.0050.014-0.0920.1320.0110.1080.14-0.0180.0080.271-0.008-0.2620.0060.0150.018-0.0210.6181.30.5650.521-0.031-0.038-0.010.2060.008-0.062-0.133-0.013-1.3240.030.0010.11.0060.1620.445
Percentage of IncomeTaxExpenseBenefit0.40.10.00.0-1.00.50.00.30.5-0.10.00.9-0.0-1.00.00.00.0-0.11.84.11.91.8-0.1-0.2-0.00.90.0-0.2-0.5-0.1-5.90.10.00.55.40.82.8
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.00.00.00.00.0-0.00.00.1-0.0-0.10.00.00.0-0.00.30.60.30.3-0.0-0.0-0.00.10.0-0.0-0.1-0.0-0.80.00.00.10.60.10.3
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value39434855668287898071665745363231262324232120201918181819171718192021232527303236363841444446
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating12.514.315.817.720.224.025.125.323.221.620.718.816.213.813.012.811.610.711.311.311.110.810.810.710.510.811.011.110.410.711.412.013.314.215.216.217.619.520.923.625.325.826.830.130.132.7

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


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
Value27926125925526326126126426626125424723822521921520419219018417517116716515615115315114914414214113513013213212812512411810810911210210495
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating87.585.784.282.379.876.074.974.776.878.479.381.283.886.287.087.288.489.388.788.788.989.289.289.389.589.289.088.989.689.388.688.086.785.884.883.882.480.579.176.474.774.273.269.969.967.3

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value6.9526.0585.4865.7856.4526.1045.0545.5125.565.3544.5734.6824.8994.475-30.7954.4044.6034.4323.9564.0994.2844.1483.8893.9734.313.9753.6833.8924.1543.9491-25.9623.7933.55488-24.815
Percentage of InterestIncomeExpenseNet2.52.32.12.32.52.31.92.12.12.01.81.92.12.0-14.12.02.32.32.12.22.42.42.32.42.72.62.42.62.82.764.0-18.32.82.766.5-18.7
Percentage of InterestAndDividendIncomeOperating2.22.01.81.92.01.81.41.61.61.61.41.51.71.7-12.21.82.02.11.82.02.22.22.12.12.52.32.12.32.52.456.7-16.12.42.356.3-15.7
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value272255253250256255256259260256249242233220215211199188186180170167163161152147150147145140138138132127
Percentage of InterestIncomeExpenseNet97.597.797.997.797.597.798.197.997.998.098.298.197.998.098.298.097.797.797.997.897.697.697.797.697.397.497.697.497.297.397.597.597.297.3
Percentage of InterestAndDividendIncomeOperating85.383.882.480.477.874.273.473.175.276.877.879.682.184.585.485.486.487.286.986.786.887.187.187.287.186.886.986.687.186.886.485.784.383.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtfc:CommunityBanking


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value2192031991962052062052092142112072021961831781761661561541501421411401321261221241211211166313311110661124
Percentage of InterestIncomeExpenseNet78.677.776.876.978.279.178.679.380.580.781.881.882.781.481.481.781.481.281.181.381.282.684.380.180.980.881.080.481.381.144.994.182.081.346.494.0
Percentage of InterestAndDividendIncomeOperating68.766.664.763.262.460.158.959.261.863.364.966.469.370.270.871.371.972.472.072.172.273.775.271.572.572.072.171.572.872.439.882.871.169.739.378.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, wtfc:SpecialtyFinance


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value454447464240424239373636323232302826272524211824212121211919-21.389321717-24.41432
Percentage of InterestIncomeExpenseNet16.217.118.318.216.115.616.215.914.814.414.514.713.514.614.814.114.013.914.213.813.912.310.914.913.613.914.014.413.313.3-15.023.112.813.4-18.424.3
Percentage of InterestAndDividendIncomeOperating14.114.715.414.912.911.812.111.911.411.311.511.911.312.612.912.312.412.412.612.312.411.09.713.312.212.412.512.811.911.9-13.320.311.111.5-15.620.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:SpecialtyFinance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, wtfc:WealthManagement


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value7.7657.4497.346.8948.5867.7928.397.296.9367.5024.7264.0484.244.4414.3874.5574.9195.0564.914.8354.3834.4834.1754.3684.284.1893.9863.8774.0064.0998.8341.6243.2813.4477.3840.524
Percentage of InterestIncomeExpenseNet2.82.82.82.73.33.03.22.82.62.91.91.61.82.02.02.12.42.62.62.62.52.62.52.62.72.82.62.62.72.86.21.12.42.65.60.4
Percentage of InterestAndDividendIncomeOperating2.42.42.42.22.62.32.42.12.02.21.51.31.51.71.71.82.12.32.32.32.22.32.22.42.42.52.32.32.42.55.51.02.12.34.70.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Marketing And Advertising Expense

us-gaap:MarketingAndAdvertisingExpense

us-gaap:MarketingAndAdvertisingExpense


Marketing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value118.5469.857.887.704101213129.8589.41411118.8247.3829.5728.7265.156.6917.3656.9413.7795.3746.2376.4063.9073.6693.5283.5582.8163.5172.7722.7222.042.7252.5282.1792.0063.2072.1191.441.6141.8811.651.471.314
Percentage of MarketingAndAdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating3.52.83.22.52.33.23.63.83.73.02.93.64.13.42.93.93.82.43.13.53.52.02.93.43.72.32.12.12.11.72.21.71.71.31.71.61.41.32.01.41.01.11.21.11.00.9

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
Value105153101107216285998189799189816865645854535049353843393840383435353432303225231930111614201316
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 InterestAndDividendIncomeOperating32.950.132.934.56.618.324.628.023.526.724.830.231.531.427.326.528.127.125.425.525.425.518.920.725.022.922.123.623.121.422.022.121.921.019.220.416.414.812.219.58.111.19.213.68.711.2

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5.036-4.912-4.594-4.157-3.998-0.7990.1311.7812.9932.6122.1761.6960.9790.497
Percentage of NetIncomeLoss-4.8-3.2-4.5-3.9-18.5-1.30.21.83.72.92.71.81.10.6
Percentage of InterestAndDividendIncomeOperating-1.6-1.6-1.5-1.3-1.2-0.20.00.50.90.80.70.60.30.2
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.4270.1540.0160.036-0.2490.3590.0320.2920.383-0.0490.0190.73-0.012-0.7130.0080.0240.029-0.0340.9572.0050.8750.804-0.048-0.06-0.0140.3180.01-0.091-0.203-0.02-2.0040.0450.0010.1511.5550.2470.664
Percentage of NetIncomeLoss0.40.10.00.0-1.10.60.00.30.5-0.10.00.8-0.0-0.90.00.00.0-0.11.83.81.71.6-0.1-0.2-0.00.80.0-0.2-0.5-0.1-5.70.10.00.55.20.82.6
Percentage of InterestAndDividendIncomeOperating0.10.10.00.0-0.10.10.00.10.1-0.00.00.2-0.0-0.30.00.00.0-0.00.41.00.40.4-0.0-0.0-0.00.20.0-0.1-0.1-0.0-1.20.00.00.11.00.20.4
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

wtfc:CommunityBanking


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value7212170-7.3153468536063655744463737
Percentage of NetIncomeLoss69.279.565.8-33.855.169.465.667.769.373.069.968.370.964.570.7
Percentage of InterestAndDividendIncomeOperating22.839.922.7-2.210.119.415.418.120.923.021.918.119.917.518.0
Percentage of InterestAndDividendIncomeOperating wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:SpecialtyFinance


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value232329222224212122192017141612
Percentage of NetIncomeLoss22.715.627.8104.835.224.525.924.525.021.824.426.022.927.624.0
Percentage of InterestAndDividendIncomeOperating7.57.89.66.96.46.86.16.57.56.97.76.96.47.56.1
Percentage of InterestAndDividendIncomeOperating wtfc:SpecialtyFinance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:WealthManagement


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value8.5077.4446.8726.2866.096.0886.9026.9725.2424.6894.7013.7844.0224.6032.821
Percentage of NetIncomeLoss8.14.96.429.09.76.18.57.85.75.25.75.86.27.95.3
Percentage of InterestAndDividendIncomeOperating2.72.42.21.91.81.72.02.11.71.71.81.51.72.11.4
Percentage of InterestAndDividendIncomeOperating wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


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
Value105153101107216285998189799189816865645854535049353843393840383435353432303225231930111614201316
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 InterestAndDividendIncomeOperating32.950.132.934.56.618.324.628.023.526.724.830.231.531.427.326.528.127.125.425.525.425.518.920.725.022.922.123.623.121.422.022.121.921.019.220.416.414.812.219.58.111.19.213.68.711.2
Percentage of InterestAndDividendIncomeOperating 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 Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9814694971960839779877789877966636254504946453134423736383632333331292729222118291015-1.97158.06611
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating30.747.830.631.25.917.724.027.422.926.124.229.530.830.626.525.727.225.423.723.823.623.717.018.524.122.021.222.622.220.421.021.120.219.317.518.814.714.011.518.87.410.4-1.310.35.47.8

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-6.44737127.623-2.094-28.3713.917-5.014-16.25-3.651-4.0460.1550.792
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-2.012.24.22.4-0.6-8.21.1-1.4-4.7-1.1-1.30.10.3

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-30
Value2309000.02180000.07341000.02891000.05167000.0-11145000.02546000.0-1471000.02505000.02277000.0-6239000.01942000.0-1996000.0-2897000.0-918000.04206000.02833000.0877000.0-2349000.0-1644000.0612000.06038000.0-3693000.0-6337000.01516000.0-9045000.0-7995000.0-9685000.06707000.0-7400000.0-5923000.03905000.0-6318000.0-4866000.0-1705000.05897000.02101.000
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of InterestAndDividendIncomeOperating0.70.72.40.91.6-3.20.7-0.40.70.7-1.90.6-0.7-1.1-0.41.71.20.4-1.1-0.80.33.1-2.0-3.40.9-5.3-4.6-5.74.0-4.6-3.72.4-4.0-3.2-1.13.70.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.029-5.27816-0.2447.006274.1996.5524.9152616-11.934-8.121-26.406-0.3495.051135.504-32.7491.8615.4722-13.61512-30.786.2415.368-8.197226.283-16.6222.79-48.137-8.778-2.0947.8346.801-1.952-6.349-0.6617.591
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.0-1.75.3-0.12.17.91.21.81.47.95.1-3.9-2.9-10.1-0.12.05.72.6-15.20.92.811.9-7.36.9-17.63.73.1-4.813.43.9-10.41.7-30.7-5.8-1.35.04.4-1.2-4.0-0.45.2

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-6.447377.623-2.094-28.371-5.014-16.25-3.6510.1550.7922.2491.9690.236-0.1870.9814.7021.683-0.3170.290.4740.060.131-0.341-0.2040.585-0.377-0.0590.2480.391.3040.8880.919-0.1740.565
Percentage of OtherComprehensiveIncomeLossNetOfTax-22231.0-705.9-3124.2-29.9-104.8-76.5-330.6-13.8-1.3-9.8-8.5-564.24.7-1.417.8-14.490.4-5.81.3-3.50.5-0.4-5.5-3.8-7.1-1.7-0.9-1.514.0-2.7-10.1-43.9-2.28.3
Percentage of InterestAndDividendIncomeOperating-2.012.22.4-0.6-8.2-1.4-4.7-1.10.10.30.90.80.1-0.10.52.20.8-0.20.20.30.00.1-0.2-0.10.3-0.2-0.00.20.20.80.60.6-0.10.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value4.167-44.715-10.7583.93366131827-14.031-6.917-25.758-1.40.609103.646-35.1021.8225.17516-10.39619-32.42715130.9031513-10.947-1.505-43.123-4.8-1.3082.1114.135
Percentage of OtherComprehensiveIncomeLossNetOfTax14369.0847.24409.056.1246.0199.0379.7105.2117.685.297.5401.112.180.166.2107.297.994.672.276.4149.1105.4250.4252.7-11.071.6218.765.9-53.989.654.762.526.960.8
Percentage of InterestAndDividendIncomeOperating1.3-14.6-3.51.219.43.75.48.4-4.6-2.4-9.9-0.60.24.61.7-16.30.92.68.6-5.510.3-18.59.27.90.59.68.5-6.8-0.9-27.5-3.2-0.81.32.7
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.029-5.27816-0.2447.006274.1996.5524.9152616-11.934-8.121-26.406-0.3495.051135.504-32.7491.8615.4722-13.61512-30.786.2415.368-8.197226.283-16.6222.79-48.137-8.778-2.0947.8346.801-1.952-6.349-0.661
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.0-1.75.3-0.12.17.91.21.81.47.95.1-3.9-2.9-10.1-0.12.05.72.6-15.20.92.811.9-7.36.9-17.63.73.1-4.813.43.9-10.41.7-30.7-5.8-1.35.04.4-1.2-4.0-0.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2.3092.182.8915.167-11.145-1.4712.5052.2771.942-1.996-2.897-0.9184.2062.8330.877-2.349-1.6440.6126.038-3.693-6.3371.516-9.045-7.995-9.6856.707-7.4-5.9233.905-6.318-4.866-1.7055.8972.101
Percentage of OtherComprehensiveIncomeLossNetOfTax7962.1-41.3-1184.873.8-41.2-22.551.08.6-16.324.611.0263.083.321.315.97.2-88.311.226.527.1-49.6-4.9-144.9-148.9118.230.1-117.835.6140.013.155.481.475.330.9
Percentage of InterestAndDividendIncomeOperating0.70.70.91.6-3.2-0.40.70.70.6-0.7-1.1-0.41.71.20.4-1.1-0.80.33.1-2.0-3.40.9-5.3-4.6-5.74.0-4.6-3.72.4-4.0-3.2-1.13.71.3
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value504745423843414040393838373836343433271260240230233216209203189196199188195179172185145150157154
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating15.915.614.713.811.712.711.811.511.611.811.912.713.214.614.613.914.815.5130.3132.0125.0124.3133.5127.0122.8122.1117.5121.9127.6123.5123.6115.1110.5119.899.9101.8106.9103.7

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:DepositAccount


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
Value131211111011109.9729.2778.8489.0659.3319.1518.857
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.125.226.226.927.125.826.624.423.222.523.724.124.523.2
Percentage of InterestAndDividendIncomeOperating4.13.93.83.73.23.33.12.82.72.62.83.13.23.4
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:AdministrativeServicesRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.2281.2561.2631.0770.9331.1121.0721.0861.0091.031.261.0991.2051.0611.1031.0520.9861.024
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.62.82.52.42.52.62.72.52.63.32.83.22.83.03.12.93.1
Percentage of InterestAndDividendIncomeOperating0.40.40.40.30.30.30.30.30.30.30.40.40.40.40.40.40.40.5
Percentage of InterestAndDividendIncomeOperating wtfc:AdministrativeServicesRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:AssetManagementRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value20191716141515141414
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.740.338.537.937.035.238.236.536.835.9
Percentage of InterestAndDividendIncomeOperating6.36.35.65.24.34.54.54.24.24.2
Percentage of InterestAndDividendIncomeOperating wtfc:AssetManagementRevenue0.00.00.00.00.00.00.00.00.00.0

wtfc:BrokerageandInsuranceProductCommissions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.1485.044.744.5634.1475.2814.8594.6864.7644.516
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.110.610.510.710.812.111.811.511.911.5
Percentage of InterestAndDividendIncomeOperating1.61.61.51.51.31.51.41.31.41.4
Percentage of InterestAndDividendIncomeOperating wtfc:BrokerageandInsuranceProductCommissions0.00.00.00.00.00.00.00.00.00.0

wtfc:CardRelatedFeeRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.1871.7742.0732.0211.3792.1060.8842.222.1562.5561.8582.3281.1162.1391.5431.4711.4291.415
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.33.74.64.73.64.82.15.45.46.54.96.03.05.64.24.34.24.2
Percentage of InterestAndDividendIncomeOperating0.70.60.70.60.40.60.30.60.60.80.60.80.40.80.60.60.60.7
Percentage of InterestAndDividendIncomeOperating wtfc:CardRelatedFeeRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:MortgageBrokerFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.1140.0760.0560.0850.1740.0530.160.2350.1910.1820.3260.2950.2880.2790.4230.4120.4140.316
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.20.50.10.40.60.50.50.90.80.80.71.21.21.20.9
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.10.00.00.10.10.10.10.10.10.10.20.20.20.1
Percentage of InterestAndDividendIncomeOperating wtfc:MortgageBrokerFees0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:OtherDepositRelatedFeeRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.2653.3173.1873.162.9143.1783.0963.3223.2932.7892.9653.0353.0342.8582.8843.0322.8532.358
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.46.97.07.47.67.37.58.18.27.17.87.88.17.57.88.88.37.0
Percentage of InterestAndDividendIncomeOperating1.01.11.01.00.90.90.90.90.90.80.91.01.11.11.11.21.21.1
Percentage of InterestAndDividendIncomeOperating wtfc:OtherDepositRelatedFeeRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:ServiceChargesonDepositAccountsRevenue


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13121110119.9729.2778.8489.0659.3319.1518.8578.9078.6458.6968.265
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.125.226.927.125.824.423.222.523.724.124.523.224.225.125.424.7
Percentage of InterestAndDividendIncomeOperating4.13.93.73.23.32.82.72.62.83.13.23.43.53.53.83.8
Percentage of InterestAndDividendIncomeOperating wtfc:ServiceChargesonDepositAccountsRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:TrustRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.3795.0174.6744.1794.2485.2914.4014.3994.645.327
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.610.510.39.811.012.110.710.811.613.5
Percentage of InterestAndDividendIncomeOperating1.71.61.51.31.31.51.31.21.31.6
Percentage of InterestAndDividendIncomeOperating wtfc:TrustRevenue0.00.00.00.00.00.00.00.00.00.0

wtfc:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value30292624222524232423
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.561.459.358.358.959.460.758.860.260.9
Percentage of InterestAndDividendIncomeOperating9.69.68.78.06.97.57.16.87.07.2
Percentage of InterestAndDividendIncomeOperating wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value408448-1056.208426425374-926.527379364343-839.144347333310-712.451295294261271260240230233216209203189196199188195179172185145150157154
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating128.0146.8-342.9137.1128.9108.9-264.9107.2105.1102.9-261.7113.9117.4119.0-282.9119.4127.3121.1130.3132.0125.0124.3133.5127.0122.8122.1117.5121.9127.6123.5123.6115.1110.5119.899.9101.8106.9103.7

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenuesus-gaap:
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
Value-8.392-8.064-8.179-7.549-7.095-6.646-6.181-5.897-5.662-5.186-5.076-5.105-4.726-4.477-4.298-4.075-3.922-3.274-3.078-2.995-2.941-2.771-2.672-30.196-2.451-2.415-27.971
Percentage of Revenues-2.1-1.8-1.9-1.8-1.9-1.7-1.7-1.7-1.6-1.6-1.6-1.7-1.6-1.7-1.6-1.6-1.6-1.4-1.3-1.4-1.4-1.4-1.4-15.4-1.2-1.3-14.3
Percentage of InterestAndDividendIncomeOperating-2.6-2.6-2.6-2.3-2.1-1.9-1.8-1.8-1.9-1.8-1.9-2.1-2.0-2.1-2.1-2.1-2.0-1.8-1.8-1.8-1.7-1.7-1.7-18.7-1.6-1.6-17.7
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value417456434432381386370349353338315300299265275264244233236219212206192199202190
Percentage of Revenues102.1101.8101.9101.8101.9101.7101.7101.7101.6101.6101.6101.7101.6101.7101.6101.6101.6101.4101.3101.4101.4101.4101.4101.4101.2101.3
Percentage of InterestAndDividendIncomeOperating130.6149.4139.7131.2111.0109.0106.8104.7115.8119.2120.9121.5129.4123.2132.4134.0127.0126.1135.2128.8124.5123.7119.1123.6129.1125.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtfc:CommunityBanking


Revenuesus-gaap:
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
Value310350333335287292279259272262239229231198212203187178183167160154144171156146173
Percentage of Revenues75.878.278.378.976.877.176.875.678.378.777.277.578.676.178.578.178.077.378.377.476.576.076.087.178.478.188.8
Percentage of InterestAndDividendIncomeOperating97.0114.8107.3101.783.782.680.677.889.392.491.892.5100.192.2102.3103.097.596.1104.698.493.992.889.3106.2100.196.4109.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, wtfc:SpecialtyFinance


Revenuesus-gaap:
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
Value676867646262585753484846424037363332302830282734252433
Percentage of Revenues16.515.215.915.116.616.416.216.715.414.515.715.814.415.713.914.214.014.313.013.414.413.914.317.712.813.217.0
Percentage of InterestAndDividendIncomeOperating21.222.321.819.518.017.517.017.217.517.118.618.918.319.018.118.717.517.817.417.017.717.016.821.616.316.321.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:SpecialtyFinance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, wtfc:WealthManagement


Revenuesus-gaap:
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
Value393733333131313227272724252524242322232222232120191816
Percentage of Revenues9.78.47.77.88.58.38.89.57.98.38.88.48.79.99.29.39.79.910.010.610.511.411.110.510.010.08.5
Percentage of InterestAndDividendIncomeOperating12.412.310.610.09.38.99.29.79.09.710.510.111.012.012.012.312.112.313.313.512.914.013.012.812.712.410.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4673845682450804373143540387993662034911336413235831244301422946428456279152735826929257782566825321244202348822917220432079920382200101916918895182211809717682176131707417519170181657616172158931591414615140941398014100137081283912215
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

srt:ParentCompany, srt:ReportableLegalEntities


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value5177473839283526
Percentage of Assets11.512.912.612.6
Percentage of Assets11.512.912.612.6
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value45080366203124427915256682291720010180971751915893
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, wtfc:CommunityBanking


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value36769295832543822781220322116421172210192019019575192511850517321170501672415945156691516015132173751471014295147871687713286
Percentage of Assets81.680.881.481.681.882.182.583.082.783.384.083.983.383.783.683.282.983.283.698.383.583.784.499.283.6
Percentage of Assets81.680.881.481.681.882.182.583.082.783.384.083.983.383.783.683.282.983.283.698.383.583.784.499.283.6
Percentage of Assets us-gaap:OperatingSegments wtfc:CommunityBanking100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wtfc:SpecialtyFinance


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value7015591650734515425539663884370236453322311629872931278427662704270325322470422224182291229537962185
Percentage of Assets15.616.216.216.215.815.415.114.614.914.113.613.614.113.713.814.114.313.913.723.913.713.413.122.313.7
Percentage of Assets15.616.216.216.215.815.415.114.614.914.113.613.614.113.713.814.114.313.913.723.913.713.413.122.313.7
Percentage of Assets us-gaap:OperatingSegments wtfc:SpecialtyFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wtfc:WealthManagement


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value1295112073361864164861260058458954855054554751951952252849410148448743795422
Percentage of Assets2.93.12.32.22.42.52.42.42.42.52.42.52.62.72.62.72.82.92.70.62.82.92.50.62.7
Percentage of Assets2.93.12.32.22.42.52.42.42.42.52.42.52.62.72.62.72.82.92.70.62.82.92.50.62.7
Percentage of Assets us-gaap:OperatingSegments wtfc:WealthManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

wtfc:CommunityBanking


Assetsus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value3761937102357293556031499280922700525997245902397923213224262203221164210191733916743172131687716234156401518815110137681326513258133081287512019
Percentage of Assets80.581.281.781.781.280.580.380.381.681.481.682.081.882.183.098.498.198.399.297.996.795.694.994.294.194.894.493.998.4
Percentage of Assets80.581.281.781.781.280.580.380.381.681.481.682.081.882.183.098.498.198.399.297.996.795.694.994.294.194.894.493.998.4
Percentage of Assets wtfc:CommunityBanking100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtfc:SpecialtyFinance


Assetsus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value77017174673267086133573955665234489748244568430542553966370241633932388237963711338732713255321130382944291528862185
Percentage of Assets16.515.715.415.415.816.416.516.216.216.416.115.715.815.414.623.623.022.222.322.420.920.620.522.021.621.120.721.117.9
Percentage of Assets16.515.715.415.415.816.416.516.216.216.416.115.715.815.414.623.623.022.222.322.420.920.620.522.021.621.120.721.117.9
Percentage of Assets wtfc:SpecialtyFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtfc:WealthManagement


Assetsus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value141614051269127111661079107011276556606746266416486009894929596959288676365666662
Percentage of Assets3.03.12.92.93.03.13.23.52.22.22.42.32.42.52.40.60.60.50.60.60.60.60.60.50.40.50.50.50.5
Percentage of Assets3.03.12.92.93.03.13.23.52.22.22.42.32.42.52.40.60.60.50.60.60.60.60.60.50.40.50.50.50.5
Percentage of Assets wtfc:WealthManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4239941429409643965739549350993292931371301942898627977269622635725425249392444924089230132297222647217972106920564197081853418251179401714016897162811619715808157761524815714152571485414484143501438613142126411254312701123231147511076
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets90.790.790.990.790.890.589.989.989.889.689.589.589.589.389.389.489.589.389.589.489.389.789.789.489.189.589.789.489.489.489.589.489.689.389.789.789.689.690.390.489.989.789.790.189.989.490.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4673845682450804373143540387993662034911336413235831244301422946428456279152735826929257782566825321244202348822917220432079920382200101916918895182211809717682176131707417519170181657616172158931591414615140941398014100137081283912215
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value5177473839283526
Percentage of LiabilitiesAndStockholdersEquity11.512.912.612.6
Percentage of Assets11.512.912.612.6
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value433942524115407439903700369135403446337132673179310630312976290828392764269526742623241823522335226421312069202819981940190018731836182518041761172216871543152814731453143613981384136411381066739
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.39.39.19.39.29.510.110.110.210.410.510.510.510.710.710.610.510.710.510.610.710.310.310.610.910.510.310.610.610.610.510.610.410.710.310.310.410.49.79.610.110.310.39.910.110.69.30.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4115369132672976
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets9.110.110.510.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities79.577.983.284.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-23.09-13.1417.8577.1644.165-2.193
Percentage of StockholdersEquity-0.6-0.40.20.20.2-0.1
Percentage of Assets-0.1-0.00.00.00.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value7.7214-23.09-35.983-43.606-41.512-13.141-17.058-12.0444.2067.8571111107.1645.1954.9595.1464.165-0.537-2.22-2.193-2.517-2.462
Percentage of StockholdersEquity0.20.3-0.6-0.9-1.1-1.1-0.4-0.5-0.30.10.20.40.40.40.20.20.20.20.2-0.0-0.1-0.1-0.1-0.1
Percentage of Assets0.00.0-0.1-0.1-0.1-0.1-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value30267074858114174.209-14.451-42.353-68.916-54.885-47.968-15.813-14.413-15.022-25.663-29.3095.7933.971-17.674-9.533-53.665
Percentage of StockholdersEquity0.70.61.71.82.12.20.40.50.1-0.4-1.3-2.2-1.8-1.6-0.5-0.5-0.5-0.9-1.10.20.2-0.8-0.5-2.8
Percentage of Assets0.10.10.20.20.20.20.00.00.0-0.0-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.10.00.0-0.1-0.0-0.3
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value101015-0.841-0.597-7.603-34.678-38.877-45.429-50.344-76.872-93.15-81.216-73.095-41.835-41.486-46.537-59.824-65.328-32.579-34.44-39.91-62.708-49.093-61.871-31.091-37.332-42.7-34.503-56.753-63.036-46.414-49.204-1.0677.7119.8051.971-4.83-2.8783.4714.132-3.459-5.5123.9434.966-2.847-6.622-10.302-13.672
Percentage of StockholdersEquity0.20.20.4-0.0-0.0-0.2-0.9-1.1-1.3-1.5-2.4-2.9-2.6-2.4-1.4-1.4-1.6-2.2-2.4-1.2-1.3-1.7-2.7-2.1-2.7-1.5-1.8-2.1-1.7-2.9-3.3-2.5-2.7-0.10.40.60.1-0.3-0.20.20.3-0.2-0.40.30.4-0.2-0.6-1.0-1.8
Percentage of Assets0.00.00.0-0.0-0.0-0.0-0.1-0.1-0.1-0.2-0.2-0.3-0.3-0.3-0.1-0.2-0.2-0.2-0.3-0.1-0.1-0.2-0.3-0.2-0.3-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.00.00.10.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value-27.776-30.085-32.265-39.606-42.497-47.664-36.519-39.065-37.594-40.099-42.376-36.137-38.079-36.083-33.186-32.268-36.474-39.307-40.184-37.835-36.191-42.841-25.282-6.909
Percentage of StockholdersEquity-0.6-0.7-0.8-1.0-1.1-1.3-1.0-1.1-1.1-1.2-1.3-1.1-1.2-1.2-1.1-1.1-1.3-1.4-1.5-1.4-1.4-1.8-1.2-0.4
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.1-0.1-0.2-0.1-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value166916631649164716431652165015741569156515571553154715401529151915111381136513561350119411901187115911561133112911251122111711181066104010361018101310081001997969967965682680677589571539
Percentage of StockholdersEquity38.539.140.140.441.244.644.744.545.546.447.748.949.850.851.452.253.250.050.750.751.549.450.650.851.254.354.855.756.357.858.859.758.157.057.457.858.859.764.965.365.866.667.248.849.149.651.853.673.0
Percentage of Assets3.63.63.73.83.84.34.54.54.74.85.05.25.35.45.55.65.65.45.35.45.55.15.25.45.65.75.75.96.06.26.26.36.16.15.96.06.16.26.36.36.66.96.94.85.05.34.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap: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
Value58585858585857565656565656565655555251515148484847474646464646393737373636363535343434313131272626
Percentage of StockholdersEquity1.41.41.41.41.51.61.61.61.61.71.71.81.81.91.91.92.01.91.91.92.02.02.12.12.12.22.32.32.32.42.42.12.12.02.12.12.12.22.32.42.42.42.42.22.22.32.42.53.6
Percentage of Assets0.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.00.0
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:PreferredStock


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
Value41241241241241212512512512512512512512512512512512525125125125125125125125112612612612612612612617617617617617617649494949492872862852842810.0
Percentage of StockholdersEquity9.59.710.010.110.33.43.43.53.63.73.83.94.04.14.24.34.49.19.39.49.610.410.710.811.15.96.16.26.36.56.76.89.69.79.810.010.210.43.23.33.43.43.520.520.720.925.026.40.0
Percentage of Assets0.90.90.90.90.90.30.30.40.40.40.40.40.40.40.40.50.51.01.01.01.01.11.11.11.20.60.60.70.70.70.70.71.01.01.01.01.11.10.30.30.30.40.42.02.12.22.30.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value228822082080200119211917189918301747168216101543146413871313125411981143109610511008967928901872835803771737705676643612581555527501478459441415404392394381373366318309
Percentage of StockholdersEquity52.851.950.549.148.151.851.551.750.749.949.348.547.145.844.143.142.241.440.739.338.440.039.538.638.539.238.838.036.936.335.634.333.431.830.830.029.128.329.828.928.227.827.328.227.627.432.229.941.9
Percentage of Assets4.94.84.64.64.44.95.25.25.25.25.25.15.04.94.74.64.54.44.34.24.14.14.14.14.24.14.04.03.93.93.73.63.53.43.23.13.03.02.92.82.82.92.82.82.82.93.00.00.0
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

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value-100.363-100.363-100.363-44.891-44.891-44.891-6.931-6.799-6.65-6.65-5.634-5.547-5.355-5.355-4.986-4.884-4.884-4.884-4.589-4.522-4.145-4.145-3.973-3.964-3.964-3.948-3.549-3.519-3.449-3.38-3.0-8.29-8.214-8.187-7.838-7.49-7.374-6.559-0.112-0.068-0.05-0.0740.0-0.051-0.004-122.733-122.29-122.196
Percentage of StockholdersEquity-2.3-2.4-2.4-1.1-1.1-1.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.0-0.0-0.0-0.00.0-0.0-0.0-10.8-11.5-16.5
Percentage of Assets-0.2-0.2-0.2-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-1.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Tier One Risk Based Capital

us-gaap:TierOneRiskBasedCapital dei:LegalEntity

us-gaap:TierOneRiskBasedCapital

wtfc:BarringtonBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value362313252229198176150122140119104
Percentage of TierOneRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.80.80.80.80.80.70.80.80.7
Percentage of Assets wtfc:BarringtonBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:BeverlyBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value173164141127111767165593735
Percentage of TierOneRiskBasedCapital47.852.656.055.656.043.547.253.342.431.533.7
Percentage of Assets0.40.50.50.50.40.30.40.40.30.20.3
Percentage of Assets wtfc:BeverlyBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:CrystalLakeBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1181191029189858379777374
Percentage of TierOneRiskBasedCapital32.638.140.639.845.248.555.665.155.761.371.4
Percentage of Assets0.30.30.30.30.30.40.40.40.40.50.5
Percentage of Assets wtfc:CrystalLakeBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:HinsdaleBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value323328244214201191146144145134128
Percentage of TierOneRiskBasedCapital89.2104.796.893.3101.4108.597.1117.6103.8112.5123.4
Percentage of Assets0.70.90.80.80.80.80.70.80.80.80.9
Percentage of Assets wtfc:HinsdaleBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:LakeForestBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value494440402347331256231222209202172
Percentage of TierOneRiskBasedCapital136.6140.7159.5151.7167.2145.1153.6181.5149.7169.2165.3
Percentage of Assets1.11.21.31.21.31.11.21.21.21.31.2
Percentage of Assets wtfc:LakeForestBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:LibertyvilleBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1691641521341261171071031059385
Percentage of TierOneRiskBasedCapital46.752.760.658.663.766.871.484.775.278.382.4
Percentage of Assets0.40.50.50.50.50.50.50.60.60.60.6
Percentage of Assets wtfc:LibertyvilleBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:NorthbrookBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value28026022319816712911613112513683
Percentage of TierOneRiskBasedCapital77.583.288.886.684.573.477.5107.389.4114.079.6
Percentage of Assets0.60.70.70.70.70.60.60.70.70.90.6
Percentage of Assets wtfc:NorthbrookBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:OldPlankTrailBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1551551451391221009692662928
Percentage of TierOneRiskBasedCapital43.049.857.860.861.556.964.275.647.324.327.4
Percentage of Assets0.30.40.50.50.50.40.50.50.40.20.2
Percentage of Assets wtfc:OldPlankTrailBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:SchaumburgBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value119118108105100716764625345
Percentage of TierOneRiskBasedCapital32.937.843.046.150.840.844.752.444.745.043.3
Percentage of Assets0.30.30.30.40.40.30.30.40.40.30.3
Percentage of Assets wtfc:SchaumburgBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:StCharlesBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value153151111102104756764605134
Percentage of TierOneRiskBasedCapital42.448.444.244.652.842.744.852.943.443.432.9
Percentage of Assets0.30.40.40.40.40.30.30.40.30.30.2
Percentage of Assets wtfc:StCharlesBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:StateBankOfLakes


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1221191079586766968615756
Percentage of TierOneRiskBasedCapital33.738.242.541.743.443.445.955.843.948.254.4
Percentage of Assets0.30.30.30.30.30.30.30.40.40.40.4
Percentage of Assets wtfc:StateBankOfLakes0.00.00.00.00.00.00.00.00.00.00.0

wtfc:TownBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value23621719918017415312579767568
Percentage of TierOneRiskBasedCapital65.469.679.378.987.887.283.465.154.962.965.7
Percentage of Assets0.50.60.60.60.70.70.60.40.40.50.5
Percentage of Assets wtfc:TownBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:VillageBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1761611421361271089788867772
Percentage of TierOneRiskBasedCapital48.851.656.459.764.061.364.872.561.765.069.3
Percentage of Assets0.40.40.50.50.50.50.50.50.50.50.5
Percentage of Assets wtfc:VillageBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:WheatonBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value199181159135112967069645259
Percentage of TierOneRiskBasedCapital55.057.963.358.956.754.846.956.846.144.356.7
Percentage of Assets0.40.50.50.50.40.40.40.40.40.30.4
Percentage of Assets wtfc:WheatonBank0.00.00.00.00.00.00.00.00.00.00.0

wtfc:WintrustBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value728668545439375311222162
Percentage of TierOneRiskBasedCapital201.1213.6216.4191.5189.3176.4147.9132.8
Percentage of Assets1.61.81.71.61.51.41.10.9
Percentage of Assets wtfc:WintrustBank0.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CarryingReportedAmountFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312012-12-31
Value435426322308345349286448300270392279304231277251296217270246271212275250263315
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.70.70.80.90.81.30.90.81.30.91.00.81.00.91.10.81.11.01.10.91.21.11.51.8
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312012-12-31
Value435426322308345349286448300270392279304231277251296217270246271212275250263315
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.70.70.80.90.81.30.90.81.30.91.00.81.00.91.10.81.11.01.10.91.21.11.51.8
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value435426322308345349286448300270392279304277270
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.70.70.80.90.81.30.90.81.30.91.01.01.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value32296377849
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.033.69.728.118.5
Percentage of Assets0.70.30.10.30.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities6.22.01.02.20.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value11391084968913861826765720666578493
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.53.03.13.33.43.63.84.03.83.63.5

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3225166.9624.436125.7371710195.974
Percentage of PropertyPlantAndEquipmentGross2.82.41.70.80.51.50.72.51.63.31.2
Percentage of Assets0.10.10.10.00.00.10.00.10.10.10.0
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value16916816414713713412811610510188
Percentage of PropertyPlantAndEquipmentGross14.915.517.016.216.016.216.816.215.817.517.9
Percentage of Assets0.40.50.50.50.50.60.60.60.60.60.6
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.0

wtfc:BuildingsAndLeaseholdImprovemenets


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value657646586555533506470440415340296
Percentage of PropertyPlantAndEquipmentGross57.759.660.660.861.961.361.561.262.458.960.1
Percentage of Assets1.51.81.92.02.12.22.42.42.42.12.1
Percentage of Assets wtfc:BuildingsAndLeaseholdImprovemenets0.00.00.00.00.00.00.00.00.00.00.0

wtfc:FurnitureEquipmentAndComputerSoftware


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value280243201203186173160144134116102
Percentage of PropertyPlantAndEquipmentGross24.622.520.822.321.621.021.020.120.320.220.8
Percentage of Assets0.60.70.60.70.70.80.80.80.80.70.7
Percentage of Assets wtfc:FurnitureEquipmentAndComputerSoftware0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value370329297292264234210188165146129
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.91.01.01.01.01.11.00.90.90.9

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2.0392.0072.6342.7012.822.8633.0172.9282.9572.9421.4071.1630.9971.0041.0281.0681.1411.1641.1581.0851.2481.2981.3241.350.9341.0131.1711.2021.1561.1631.1891.1541.1641.121.1081.0781.0891.0491.0620.970.704
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value752760768774769764754721711676671664639626621609605598597597595591592587571559555555535531531517512504501461449434431412403369363353346348350
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.71.71.81.82.02.12.12.12.12.12.22.22.22.22.22.22.32.32.42.42.52.62.72.72.72.82.92.82.92.92.92.93.02.92.72.72.72.72.62.82.62.62.52.52.72.9

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany, srt:ReportableLegalEntities


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value4464426636603249
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets9.911.611.711.6
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities86.290.093.292.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value646646645644644643645584584573573537509511501502500499498485486484471472421420405406381373374357356343345331330307305302283281281278278278278
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 Assets1.41.41.41.51.51.71.81.71.71.81.81.81.71.81.81.81.91.91.91.92.02.12.12.12.02.12.02.12.02.12.12.02.02.02.01.92.01.91.91.91.92.02.02.02.02.22.3

us-gaap:Goodwill us-gaap:StatementBusinessSegments

wtfc:CommunityBanking


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value536536536536536536536475475465465465438439429429428428427414414412401401349348331331305305305287274259
Percentage of Goodwill83.083.083.183.283.383.483.181.581.481.181.186.786.086.085.685.585.785.885.885.385.285.285.185.082.882.981.881.680.181.781.580.479.684.9
Percentage of Assets1.11.21.21.21.21.41.51.41.41.41.51.51.51.51.51.61.61.71.71.61.71.81.81.81.71.71.71.71.61.71.71.61.61.6
Percentage of Assets wtfc:CommunityBanking1.41.40.01.51.51.70.01.71.81.80.01.91.81.90.01.91.92.00.02.00.00.00.00.00.00.00.00.00.00.00.00.01.61.7

wtfc:SpecialtyFinance


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value40403938383739393938383939394040393838393939383840394142433637383816
Percentage of Goodwill6.36.26.26.06.05.96.16.76.76.86.77.47.77.78.08.17.97.87.88.18.18.18.18.29.69.410.310.511.59.810.010.611.25.3
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.1
Percentage of Assets wtfc:SpecialtyFinance0.50.60.00.60.60.60.00.70.70.70.00.80.80.90.00.90.91.00.01.10.00.00.00.00.00.00.00.00.00.00.00.01.00.5

wtfc:WealthManagement


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value69696969696969696969693232323232323232323232323232323232313131313130
Percentage of Goodwill10.710.710.710.810.810.810.811.911.912.212.26.06.36.36.46.46.46.46.46.66.66.66.86.87.67.67.97.98.38.58.58.99.29.8
Percentage of Assets0.10.20.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.2
Percentage of Assets wtfc:WealthManagement4.94.90.05.55.55.90.06.46.56.20.04.94.94.80.05.15.05.00.05.30.00.00.00.00.00.00.00.00.00.00.00.034.432.6

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:Trademarks, wtfc:CommunityBanking


Indefinite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5.85.85.85.85.85.85.85.85.85.85.85.85.85.80.00.00.00.0
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Trademarks wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-12-312014-12-312013-12-31
Value3134363841444743464649272122241819
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.20.10.10.10.10.10.1

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:StatementBusinessSegments

wtfc:CommunityBanking


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value252628293132342931303122151611121314
Percentage of IntangibleAssetsNetExcludingGoodwill79.679.178.677.175.774.673.768.667.864.964.380.674.574.90.00.00.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.10.1
Percentage of Assets wtfc:CommunityBanking0.10.10.00.10.10.10.00.10.10.10.00.10.10.10.00.10.10.1

Finite Lived Intangible Assets Net

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

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CoreDeposits, wtfc:CommunityBanking


Finite
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
Value192122232527282425242516101011121314151415171718101111129.5471011111211131412131415
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.10.10.10.10.10.10.10.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:CoreDeposits wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerLists, wtfc:SpecialtyFinance


Finite
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
Value0.2830.3030.3220.3380.3570.3820.4130.4360.4640.4930.5220.560.5910.6320.6740.7140.5790.6090.6410.6710.70.7240.7480.7730.7990.8290.8590.890.9220.9580.9951.0311.0691.1121.1551.1971.2411.291.341.389
Percentage of FiniteLivedIntangibleAssetsNet1.41.41.41.41.41.41.41.81.82.02.03.45.85.75.75.64.24.24.14.74.64.24.34.17.37.17.57.19.79.18.69.28.79.58.98.49.69.49.59.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CustomerLists wtfc:SpecialtyFinance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:CustomerListAndOtherIntangibles, wtfc:WealthManagement


Finite
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
Value6.2576.8257.3928.5359.6781011131415174.7654.8774.9895.1025.2155.3275.445.5525.6655.7775.896.0026.1156.2276.346.4526.5656.4256.5316.6376.7446.856.6656.7756.8856.9957.1056.66.004
Percentage of FiniteLivedIntangibleAssetsNet31.832.332.835.637.939.841.454.956.564.966.029.348.145.443.141.039.137.235.539.337.634.434.432.857.154.256.152.467.361.857.360.256.156.852.048.153.951.846.740.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets wtfc:CustomerListAndOtherIntangibles wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value86909054524750464447343637370.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.20.20.10.10.10.10.10.10.10.10.10.10.10.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Equity
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
Value788282464439423836390.00.0
Percentage of EquitySecuritiesFvNi90.791.191.185.284.683.084.182.581.883.10.00.0
Percentage of Assets0.20.20.20.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Equity
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
Value8.0668.0668.0668.0668.0668.0668.0668.0668.0668.06634363737
Percentage of EquitySecuritiesFvNi9.38.98.914.815.417.015.917.518.216.9100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.10.10.10.1
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2020-12-312019-12-31
Value8242
Percentage of EquitySecuritiesFvNi91.184.1
Percentage of Assets0.20.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2020-12-312019-12-312018-12-31
Value8.0668.06634
Percentage of EquitySecuritiesFvNi8.915.9100.0
Percentage of Assets0.00.00.1
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value86909054524750464447343637370.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.20.20.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value86909054524750464447343637370.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.20.20.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Equity
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
Value8690905452475046444734363737
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2020-12-312019-12-312018-12-31
Value905034
Percentage of EquitySecuritiesFvNi100.0100.0100.0
Percentage of Assets0.20.10.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.0

Other Assets

us-gaap:OtherAssets us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:OtherAssets

srt:ParentCompany, srt:ReportableLegalEntities


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value366353206174
Percentage of OtherAssets100.0100.0100.0100.0
Percentage of Assets0.81.00.70.6
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities7.17.55.35.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value433942524115407439903700369135403446337132673179310630312976290828392764269526742623241823522335226421312069202819981940190018731836182518041761172216871543152814731453143613981384136411381066739
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.39.39.19.39.29.510.110.110.210.410.510.510.510.710.710.610.510.710.510.610.710.310.310.610.910.510.310.610.610.610.510.610.410.710.310.310.410.49.79.610.110.310.39.910.110.69.30.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4115369132672976
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets9.110.110.510.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities79.577.983.284.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value-23.09-13.1417.8577.1644.165-2.193
Percentage of StockholdersEquity-0.6-0.40.20.20.2-0.1
Percentage of Assets-0.1-0.00.00.00.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value7.7214-23.09-35.983-43.606-41.512-13.141-17.058-12.0444.2067.8571111107.1645.1954.9595.1464.165-0.537-2.22-2.193-2.517-2.462
Percentage of StockholdersEquity0.20.3-0.6-0.9-1.1-1.1-0.4-0.5-0.30.10.20.40.40.40.20.20.20.20.2-0.0-0.1-0.1-0.1-0.1
Percentage of Assets0.00.0-0.1-0.1-0.1-0.1-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value30267074858114174.209-14.451-42.353-68.916-54.885-47.968-15.813-14.413-15.022-25.663-29.3095.7933.971-17.674-9.533-53.665
Percentage of StockholdersEquity0.70.61.71.82.12.20.40.50.1-0.4-1.3-2.2-1.8-1.6-0.5-0.5-0.5-0.9-1.10.20.2-0.8-0.5-2.8
Percentage of Assets0.10.10.20.20.20.20.00.00.0-0.0-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.10.00.0-0.1-0.0-0.3
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value101015-0.841-0.597-7.603-34.678-38.877-45.429-50.344-76.872-93.15-81.216-73.095-41.835-41.486-46.537-59.824-65.328-32.579-34.44-39.91-62.708-49.093-61.871-31.091-37.332-42.7-34.503-56.753-63.036-46.414-49.204-1.0677.7119.8051.971-4.83-2.8783.4714.132-3.459-5.5123.9434.966-2.847-6.622-10.302-13.672
Percentage of StockholdersEquity0.20.20.4-0.0-0.0-0.2-0.9-1.1-1.3-1.5-2.4-2.9-2.6-2.4-1.4-1.4-1.6-2.2-2.4-1.2-1.3-1.7-2.7-2.1-2.7-1.5-1.8-2.1-1.7-2.9-3.3-2.5-2.7-0.10.40.60.1-0.3-0.20.20.3-0.2-0.40.30.4-0.2-0.6-1.0-1.8
Percentage of Assets0.00.00.0-0.0-0.0-0.0-0.1-0.1-0.1-0.2-0.2-0.3-0.3-0.3-0.1-0.2-0.2-0.2-0.3-0.1-0.1-0.2-0.3-0.2-0.3-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.00.00.10.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-31
Value-27.776-30.085-32.265-39.606-42.497-47.664-36.519-39.065-37.594-40.099-42.376-36.137-38.079-36.083-33.186-32.268-36.474-39.307-40.184-37.835-36.191-42.841-25.282-6.909
Percentage of StockholdersEquity-0.6-0.7-0.8-1.0-1.1-1.3-1.0-1.1-1.1-1.2-1.3-1.1-1.2-1.2-1.1-1.1-1.3-1.4-1.5-1.4-1.4-1.8-1.2-0.4
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.1-0.1-0.2-0.1-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value166916631649164716431652165015741569156515571553154715401529151915111381136513561350119411901187115911561133112911251122111711181066104010361018101310081001997969967965682680677589571539
Percentage of StockholdersEquity38.539.140.140.441.244.644.744.545.546.447.748.949.850.851.452.253.250.050.750.751.549.450.650.851.254.354.855.756.357.858.859.758.157.057.457.858.859.764.965.365.866.667.248.849.149.651.853.673.0
Percentage of Assets3.63.63.73.83.84.34.54.54.74.85.05.25.35.45.55.65.65.45.35.45.55.15.25.45.65.75.75.96.06.26.26.36.16.15.96.06.16.26.36.36.66.96.94.85.05.34.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap: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
Value58585858585857565656565656565655555251515148484847474646464646393737373636363535343434313131272626
Percentage of StockholdersEquity1.41.41.41.41.51.61.61.61.61.71.71.81.81.91.91.92.01.91.91.92.02.02.12.12.12.22.32.32.32.42.42.12.12.02.12.12.12.22.32.42.42.42.42.22.22.32.42.53.6
Percentage of Assets0.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.00.0
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:PreferredStock


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
Value41241241241241212512512512512512512512512512512512525125125125125125125125112612612612612612612617617617617617617649494949492872862852842810.0
Percentage of StockholdersEquity9.59.710.010.110.33.43.43.53.63.73.83.94.04.14.24.34.49.19.39.49.610.410.710.811.15.96.16.26.36.56.76.89.69.79.810.010.210.43.23.33.43.43.520.520.720.925.026.40.0
Percentage of Assets0.90.90.90.90.90.30.30.40.40.40.40.40.40.40.40.50.51.01.01.01.01.11.11.11.20.60.60.70.70.70.70.71.01.01.01.01.11.10.30.30.30.40.42.02.12.22.30.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value228822082080200119211917189918301747168216101543146413871313125411981143109610511008967928901872835803771737705676643612581555527501478459441415404392394381373366318309
Percentage of StockholdersEquity52.851.950.549.148.151.851.551.750.749.949.348.547.145.844.143.142.241.440.739.338.440.039.538.638.539.238.838.036.936.335.634.333.431.830.830.029.128.329.828.928.227.827.328.227.627.432.229.941.9
Percentage of Assets4.94.84.64.64.44.95.25.25.25.25.25.15.04.94.74.64.54.44.34.24.14.14.14.14.24.14.04.03.93.93.73.63.53.43.23.13.03.02.92.82.82.92.82.82.82.93.00.00.0
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

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value-100.363-100.363-100.363-44.891-44.891-44.891-6.931-6.799-6.65-6.65-5.634-5.547-5.355-5.355-4.986-4.884-4.884-4.884-4.589-4.522-4.145-4.145-3.973-3.964-3.964-3.948-3.549-3.519-3.449-3.38-3.0-8.29-8.214-8.187-7.838-7.49-7.374-6.559-0.112-0.068-0.05-0.0740.0-0.051-0.004-122.733-122.29-122.196
Percentage of StockholdersEquity-2.3-2.4-2.4-1.1-1.1-1.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.0-0.0-0.0-0.00.0-0.0-0.0-10.8-11.5-16.5
Percentage of Assets-0.2-0.2-0.2-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-1.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value5858585858585756565656565656565555525151514848484747464646464639373737363636353534343431313127
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value166916631649164716431652165015741569156515571553154715401529151915111381136513561350119411901187115911561133112911251122111711181066104010361018101310081001997969967965682680677589
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.63.73.83.84.34.54.54.74.85.05.25.35.45.55.65.65.45.35.45.55.15.25.45.65.75.75.96.06.26.26.36.16.15.96.06.16.26.36.36.66.96.94.85.05.34.8

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value228822082080200119211917189918301747168216101543146413871313125411981143109610511008967928901872835803771737705676643612581555527501478459441415404392394381373366
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.94.84.64.64.44.95.25.25.25.25.25.15.04.94.74.64.54.44.34.24.14.14.14.14.24.14.04.03.93.93.73.63.53.43.23.13.03.02.92.82.82.92.82.82.82.93.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value101015-0.841-0.597-7.603-34.678-38.877-45.429-50.344-76.872-93.15-81.216-73.095-41.835-41.486-46.537-59.824-65.328-32.579-34.44-39.91-62.708-49.093-61.871-31.091-37.332-42.7-34.503-56.753-63.036-46.414-49.204-1.0677.7119.8051.971-4.83-2.8783.4714.132-3.459-5.5123.9434.966-2.847-6.622-10.302
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.0-0.0-0.0-0.0-0.1-0.1-0.1-0.2-0.2-0.3-0.3-0.3-0.1-0.2-0.2-0.2-0.3-0.1-0.1-0.2-0.3-0.2-0.3-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.00.00.10.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0-0.10.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1001001004444446.9316.7996.656.655.6345.5475.3555.3554.9864.8844.8844.8844.5894.5224.1454.1453.9733.9643.9643.9483.5493.5193.4493.383.08.298.2148.1877.8387.497.3746.5590.1120.0680.050.0740.00.0510.0040.0122
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0
Percentage of Assets0.20.20.20.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-12-312020-09-302020-06-302016-12-312016-09-302015-12-312015-09-302010-12-312010-09-302010-06-302010-03-31
Value-0.030.2682770.0880.00.0-0.3091040.0-0.128210
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-302020-06-302016-12-312016-09-302015-12-312015-09-302010-12-312010-09-302010-06-302010-03-31
Value-0.030.268-10.1250.0880.00.0-0.3091000.0-0.12883
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0-3.7100.00.00.0100.096.40.0100.039.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

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
Value3.3322.862-3.9151.2550.541-2.8193.0261.9952.9653.3183.153.2483.4153.6834.6982.4142.8282.9182.5252.0262.2682.4841.8392.5313.0152.2712.02.02.0731.6810.2011.972.2152.4131.8122.6212.352.2892.2591.3990.941.0941.5240.6111.0911.414
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
Value3.3322.862-3.9151.2550.541-2.8193.0261.9952.9653.3183.153.2483.4153.6834.6982.4142.8282.9182.5252.0262.2682.4841.8392.5313.0152.2712.02.02.0731.6810.2011.972.2152.4131.8122.6212.352.2892.2591.3990.941.0941.5240.6111.0911.414
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
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

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value431216-95.313-53.48510-379.81288-45.184-65.45687116158802225223-5.01293929.654-159.213662684101214-93.9599194254-288.7741088.587-18.539243519.2447.8227161
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating135.271.0-30.9-17.23.1-110.482.6-12.7-18.926.336.251.928.38.6100.39.5-2.260.1182.44.6-80.834.613.945.463.1133.2-60.065.4124.1161.0-185.569.15.4-12.016.9237.66.05.318.3113.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1346.988-855.71-1064.318-140.612-4528.612-1448.882-1229.785-978.854-778.71-1031.6-847.812-569.446-847.229-499.011-615.427-468.35-913.633-306.334-480.363-953.736-540.891-517.675-819.104-410.874-63.294-190.86-90.524103-232.072-6.6135-292.963-41.508-150.785-531.786-234.30525-149.776-284.403-173.287
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-421.5-280.1-345.6-45.2-1373.1-421.1-351.6-276.0-224.5-308.9-264.4-186.7-298.3-191.0-244.4-189.1-395.2-142.0-223.4-458.2-274.5-269.3-436.9-221.6-39.4-118.4-57.868.2-148.2-4.223.0-187.2-26.3-97.3-365.6-158.516.4-101.6-190.6-121.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9237421173157451418917781171874822843386840430388400997123111919759387818325-104.85673204-305.389139-227.1128417541145516-114.865-105.838233287-24.571
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating289.0243.2381.050.71368.7549.8222.6330.4252.1246.3263.2126.7295.7164.8154.2161.7431.557.351.8441.7385.3201.6436.4175.4-65.345.6130.6-200.589.3-143.6182.5112.326.694.2355.3-77.7-68.7158.5192.7-17.2

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8.63210313-36.362-4.3762-162.33814730-121.377112-24.649
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.734.04.5-11.7-1.318.3-46.441.78.7-36.335.0-8.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value431216-95.313-53.48510-379.81288-45.184-65.45687116158802225223-5.01293929.654-159.213662684101214-93.9599194254-288.7741088.587-18.539243519.2447.8227161
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating135.271.0-30.9-17.23.1-110.482.6-12.7-18.926.336.251.928.38.6100.39.5-2.260.1182.44.6-80.834.613.945.463.1133.2-60.065.4124.1161.0-185.569.15.4-12.016.9237.66.05.318.3113.1

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
Value105153101107216285998189799189816865645854535049353843393840383435353432303225231930111614201316
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 InterestAndDividendIncomeOperating32.950.132.934.56.618.324.628.023.526.724.830.231.531.427.326.528.127.125.425.525.425.518.920.725.022.922.123.623.121.422.022.121.921.019.220.416.414.812.219.58.111.19.213.68.711.2

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-5.036-4.912-4.594-4.157-3.998-0.7990.1311.7812.9932.6122.1761.6960.9790.497
Percentage of NetIncomeLoss-4.8-3.2-4.5-3.9-18.5-1.30.21.83.72.92.71.81.10.6
Percentage of InterestAndDividendIncomeOperating-1.6-1.6-1.5-1.3-1.2-0.20.00.50.90.80.70.60.30.2
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.4270.1540.0160.036-0.2490.3590.0320.2920.383-0.0490.0190.73-0.012-0.7130.0080.0240.029-0.0340.9572.0050.8750.804-0.048-0.06-0.0140.3180.01-0.091-0.203-0.02-2.0040.0450.0010.1511.5550.2470.664
Percentage of NetIncomeLoss0.40.10.00.0-1.10.60.00.30.5-0.10.00.8-0.0-0.90.00.00.0-0.11.83.81.71.6-0.1-0.2-0.00.80.0-0.2-0.5-0.1-5.70.10.00.55.20.82.6
Percentage of InterestAndDividendIncomeOperating0.10.10.00.0-0.10.10.00.10.1-0.00.00.2-0.0-0.30.00.00.0-0.00.41.00.40.4-0.0-0.0-0.00.20.0-0.1-0.1-0.0-1.20.00.00.11.00.20.4
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

wtfc:CommunityBanking


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value7212170-7.3153468536063655744463737
Percentage of NetIncomeLoss69.279.565.8-33.855.169.465.667.769.373.069.968.370.964.570.7
Percentage of InterestAndDividendIncomeOperating22.839.922.7-2.210.119.415.418.120.923.021.918.119.917.518.0
Percentage of InterestAndDividendIncomeOperating wtfc:CommunityBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:SpecialtyFinance


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value232329222224212122192017141612
Percentage of NetIncomeLoss22.715.627.8104.835.224.525.924.525.021.824.426.022.927.624.0
Percentage of InterestAndDividendIncomeOperating7.57.89.66.96.46.86.16.57.56.97.76.96.47.56.1
Percentage of InterestAndDividendIncomeOperating wtfc:SpecialtyFinance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtfc:WealthManagement


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value8.5077.4446.8726.2866.096.0886.9026.9725.2424.6894.7013.7844.0224.6032.821
Percentage of NetIncomeLoss8.14.96.429.09.76.18.57.85.75.25.75.86.27.95.3
Percentage of InterestAndDividendIncomeOperating2.72.42.21.91.81.72.02.11.71.71.81.51.72.11.4
Percentage of InterestAndDividendIncomeOperating wtfc:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


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
Value105153101107216285998189799189816865645854535049353843393840383435353432303225231930111614201316
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 InterestAndDividendIncomeOperating32.950.132.934.56.618.324.628.023.526.724.830.231.531.427.326.528.127.125.425.525.425.518.920.725.022.922.123.623.121.422.022.121.921.019.220.416.414.812.219.58.111.19.213.68.711.2
Percentage of InterestAndDividendIncomeOperating 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

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.3322.862-3.9151.2550.541-2.8193.0261.9952.9653.3183.153.2483.4153.6834.6982.4142.8282.9182.5252.0262.2682.4841.8392.5313.0152.2712.02.02.0731.6810.2011.972.2152.4131.8122.6212.352.2892.2591.3990.941.0940.1192.0161.0911.414
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1346.988-855.71-1064.318-140.612-4528.612-1448.882-1229.785-978.854-778.71-1031.6-847.812-569.446-847.229-499.011-615.427-468.35-913.633-306.334-480.363-953.736-540.891-517.675-819.104-410.874-63.294-190.86-90.524103-232.072-6.6135-292.963-41.508-150.785-531.786-234.30525-149.776-284.403-173.287
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-421.5-280.1-345.6-45.2-1373.1-421.1-351.6-276.0-224.5-308.9-264.4-186.7-298.3-191.0-244.4-189.1-395.2-142.0-223.4-458.2-274.5-269.3-436.9-221.6-39.4-118.4-57.868.2-148.2-4.223.0-187.2-26.3-97.3-365.6-158.516.4-101.6-190.6-121.6

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
Value7.7254.3889.2541616213020171315202011191315105.6474.041158.677143.897195.9027.154139.797.59613116.5896.5082818188.501246.028381014102.9192.148
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9237421173157451418917781171874822843386840430388400997123111919759387818325-104.85673204-305.389139-227.1128417541145516-114.865-105.838233287-24.571
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating289.0243.2381.050.71368.7549.8222.6330.4252.1246.3263.2126.7295.7164.8154.2161.7431.557.351.8441.7385.3201.6436.4175.4-65.345.6130.6-200.589.3-143.6182.5112.326.694.2355.3-77.7-68.7158.5192.7-17.2

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


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
Value24242326181816161616121212129.8839.8649.843109.8389.8319.4599.449.4026.8936.816.7836.2526.2476.2336.2011.8276.1562.3363.5741.5826.3141.04.2611.04.1991.0014.1445.4096.9264.1256.316
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value540.00.075370.1320.1490.01.0160.0870.1920.00.3690.1020.00.00.2950.0670.3770.00.1720.0090.00.0160.3990.030.070.0690.383.0520.0760.0270.3490.3480.1160.8156.4470.0440.018-0.0240.0740.0690.0470.0040.098
Percentage of PaymentsForRepurchaseOfCommonStock100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:DebtInstrumentInterestRateStatedPercentage


Debt
Period End2020-12-312012-03-312011-12-312011-09-30
Value2.430.02670.02730.0251
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

wtfc:CommunityFinancialSharesStatutoryTrustTwo, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.840.03510.04410.0321
Percentage of DebtInstrumentInterestRateStatedPercentage75.70.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:CommunityFinancialSharesStatutoryTrustTwo us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:FirstNorthwestCapitalTrustOne, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.250.04940.0580.0469
Percentage of DebtInstrumentInterestRateStatedPercentage133.70.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:FirstNorthwestCapitalTrustOne us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:NorthviewCapitalTrustOne, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.210.04910.05540.0438
Percentage of DebtInstrumentInterestRateStatedPercentage132.10.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:NorthviewCapitalTrustOne us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:SuburbanIllinoisCapitalTrustTwo, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.970.03640.04540.0334
Percentage of DebtInstrumentInterestRateStatedPercentage81.10.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:SuburbanIllinoisCapitalTrustTwo us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:TownBanksharesCapitalTrustOne, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.210.04910.05540.0438
Percentage of DebtInstrumentInterestRateStatedPercentage132.10.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:TownBanksharesCapitalTrustOne us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustCapitalTrustEight, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.70.03390.04250.0314
Percentage of DebtInstrumentInterestRateStatedPercentage70.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustCapitalTrustEight us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustCapitalTrustSeven, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.170.03840.04740.0354
Percentage of DebtInstrumentInterestRateStatedPercentage89.30.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustCapitalTrustSeven us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustCapitalTrustThree, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.490.05240.05690.0461
Percentage of DebtInstrumentInterestRateStatedPercentage143.60.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustCapitalTrustThree us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustCaptialTrustNine, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.850.03520.04420.0322
Percentage of DebtInstrumentInterestRateStatedPercentage76.10.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustCaptialTrustNine us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustStatutoryTrustFive, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.850.04540.0540.0429
Percentage of DebtInstrumentInterestRateStatedPercentage117.30.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustStatutoryTrustFive us-gaap:JuniorSubordinatedDebt0.00.00.00.0

wtfc:WintrustStatutoryTrustFour, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.050.04740.0560.0449
Percentage of DebtInstrumentInterestRateStatedPercentage125.50.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:WintrustStatutoryTrustFour us-gaap:JuniorSubordinatedDebt0.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType

wtfc:ReceivablesPurchaseAgreement


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.1930.027290.029360.022140.01632
Percentage of DebtInstrumentInterestRateStatedPercentage49.10.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations wtfc:ReceivablesPurchaseAgreement0.00.00.00.00.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value41.9842.1442.4743.0242.9842.9742.4342.8542.8342.7942.2542.242.0741.8941.9841.8741.8441.8541.541.2741.0741.041.3241.3442.442.3543.043.2443.2943.2542.042.2742.1541.8942.3142.0941.8341.7538.8339.0739.0938.9738.9238.7838.437.6135.61
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312012-12-312011-12-312010-12-31
Value12211857157910593
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1797000.0-2000000.0-2802000.0-3385000.0-2932000.0-1762000.0-2104000.0-1530000.0-1604000.0-1367000.0-1413000.0-1929000.0-2998000.0-1071000.0-1404000.0-1496000.0-1466000.0-1732000.0-1888000.0-1208000.0-632000.0-2371000.0640000.0-845000.0-1314000.0-3186000.0-233000.0-1400000.0-1379000.03269000.0-3424000.05779000.085000.0-6922000.02092000.01874000.0-812000.0-1320000.0-4176000.0-4236000.0-3515000.0-746000.0-413000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.913109.315
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths


Cash
Period End2021-06-302021-03-31
Value1600000.0-19900000.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value284000.0414000.0100000.0200000.0472000.0628000.092000.0285000.0290000.092000.091000.094000.092000.092000.092000.093000.092000.082000.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal

us-gaap:DebtSecuritiesHeldToMaturityCreditLossExpenseReversal


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value-10000.039000.0-4000.0-2000.0-5000.0
Percentage of DebtSecuritiesHeldToMaturityCreditLossExpenseReversal100.0100.0100.0100.0100.0

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value25252524232323212221181616151616151414111313119.1627.9187.8958.1658.4427.7577.7535.1197.1877.0926.7827.0526.1825.8155.6275.3414.3564.2215.5514.7394.3663.935.13
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.4820.723-1.9834.707
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:CallOption, wtfc:FeesFromCoveredCallOptions


Derivative
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.3880.00.02.2920.00.6431.7840.6260.6270.6691.597
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:TradingRevenue


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.003-0.0050.005-0.009-0.0040.0540.03-0.012-0.031-0.0180.112-0.043
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-0.20.00.00.0-0.20.04.7-0.7-5.0-2.916.7-2.7

wtfc:EconomicHedgeOnMSRs, wtfc:MortgageBankingRevenue


Derivative
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.00.5894.160.0820.920.00.00.0
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet0.00.0181.50.0143.10.00.00.0

wtfc:InterestRateSwapsAndCaps, us-gaap:TradingRevenue


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.5390.4280.135-0.703-0.428-0.075-0.126-0.191-0.164-0.055-0.0090.153
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-38.80.00.00.0-18.70.0-19.6-10.7-26.2-8.8-1.39.6

wtfc:MortgageBankingDerivatives, wtfc:MortgageBankingRevenue


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-10.48-17.4791143171.0260.0130.05-1.65-1.1220.5621.418
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet-755.00.00.00.0753.40.02.02.8-263.6-178.984.088.8

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value17171616161614141414101010107.8337.8147.7937.3256.2096.2035.8315.8125.3235.3145.235.2024.6724.6664.6524.620.03.5750.03.3280.03.2760.03.2610.03.1990.03.145-9.9832.8010.02.191
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value17171616161614141414101010107.8337.8147.7937.3256.2096.2035.8315.8125.3235.3145.235.2024.6724.6664.6524.620.03.5750.03.3280.03.2760.03.2610.03.1990.03.145-9.9832.8010.02.191
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0

us-gaap:DividendsPreferredStockCash

us-gaap:DividendsPreferredStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.9916.9916.991102.052.052.052.052.052.052.052.052.052.052.052.052.053.6283.6293.6283.6283.6283.6294.0791.581.5811.581.5811.5811.5811.5811.5812.5822.5812.5812.5812.5811.2121.01.01.0010.999-28.6084.1694.1264.125
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.9916.9916.991102.052.052.052.052.052.052.052.052.052.052.052.052.053.6283.6293.6283.6283.6283.6294.0791.581.5811.581.5811.5811.5811.5811.5812.5822.5812.5812.5812.5811.2121.01.01.0010.999-28.6084.1694.1264.125
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquipmentExpense

us-gaap:EquipmentExpense


Equipment
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
Value20202017151414131211111010109.59.9479.9099.0029.5329.4499.3078.7678.1758.8877.9147.8367.5557.577.2237.4037.266.5936.4136.1846.4685.8885.4665.45.0934.5014.4094.2644.3854.2034.0463.896
Percentage of EquipmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain

us-gaap:EquitySecuritiesFvNiUnrealizedGain


Equity
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
Value751000.01875000.02147000.0471000.01647000.00758000.0165000.0703000.01431000.0139000.0530000.0229000.01873000.0
Percentage of EquitySecuritiesFvNiUnrealizedGain100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
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
Value701000.0974000.02095000.0361000.01537000.0-3546000.0650000.0-86000.0494000.01431000.0-2595000.0-581000.07000.01030000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss


Equity
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
Value50000.0901000.052000.0110000.0110000.03546000.0108000.0251000.0209000.002734000.01111000.0222000.0843000.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount


Equity
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
Value030000.0900000.00388000.01700000.0-1000.00263000.00250000.0330000.00537000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount0.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.00.0100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8000.000393000.0395000.00110000.00169000.0025000.0131000.0
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount100.00.00.0100.0100.00.0100.00.0100.00.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:DerivativeFinancialInstrumentsAssets


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-3.064-22.457-18.7968.4541837-0.348-0.6170.5070.632-0.035-1.327-0.7862.4480.9410.1692.535-1.291-3.746-3.6940.186-2.896
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtfc:LoansHeldForInvestment


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.167-0.530.0150.0470.2-0.0780.4560.0860.1180.1670.343-0.032-0.26-1.128-0.3440.177-1.3040.1120.4370.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-5.52.4-0.10.61.1-0.2-131.0-13.923.326.4-980.02.433.1-46.1-36.6104.7-51.4-8.7-11.7-0.00.0-0.0

wtfc:MortgageServicingRights


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
Value3.288325.1749.7043.699-12.134102.7351.421-4.1610.653118.6227.094.2622.107-5.711-2.49314-0.519-3.254-1.0360.0970.1590.182-0.583-0.405-0.09-0.492-0.2270.338-0.0281.2920.5940.474-0.3710.5540.501-0.04-2.0220.686
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-107.3-143.5-27.5114.819.9-32.6-2888.5-443.3280.3-658.4-1865.7-854.3-1096.9289.6452.91246.7-225.3193.1-395.614.0-1749.535.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FinancialInstrument

us-gaap:USGovernmentAgenciesDebtSecurities


Fair
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value-0.0040.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.10.00.0-0.00.00.0-0.0-0.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:MunicipalBonds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-374000.0-2068000.0429000.064000.0-546000.0-1249000.0-3187000.0-1722000.06519000.01537000.0-2883000.0-2573000.0-895000.0-2190000.0583000.0-4113000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:USGovernmentAgenciesDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-24000.0-4000.0-7000.0-7000.0-32000.0-8000.0-9000.0142000.01000.0-8000.0-9000.0-134000.0-163000.0-164000.0-167000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss-0.01.2-0.9-10.91.32.60.30.52.20.10.30.315.07.4-28.14.1

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:MunicipalBonds


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value18233.2216.9975.875315.6680.5550.969314.831412220.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

wtfc:LoansHeldForInvestment


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value0.0593.918117.8771.3640.0962.8931.2030.8860.4654.191.52166.2553.2244.5042.1593.3320.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements us-gaap:FinancialInstrument

us-gaap:MunicipalBonds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.9316.06331.0692.4633.309291.1840.6127.598171.2371.8772.669144.845
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements3272.9154.7284.913.6180.63446.91016.898.469.11634.0419.581.411.442.7449.7107.6

us-gaap:USGovernmentAgenciesDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value1.780.1580.1590.1570.1570.1570.1570.1570.1580.1580.1570.1580.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements3016.94.01.42.011.5163.55.413.117.834.03.710.40.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet

wtfc:LoansHeldForInvestment


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value4.4910.5769.346.495.5490.1222.0580.6350.00.21.7381.2443.8060.2867.5813.8582.489.855210.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


Federal
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
Value6.4056.5587.0166.7727.0814.1351.3480.1484.1273.5764.0444.2054.5984.3624.3243.8773.8744.1564.7263.6864.043.6133.3173.0353.0472.9872.813.2113.1962.9513.0363.2453.0033.4443.0393.5493.4773.3573.2443.13.2814.5184.5724.6425.0053.809
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
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
Value5.0532.7716.6932.4791.5722.1524.8831.7371.5381.5012.3482.3135.772.5442.4411.9491.4721.8233.4461.1941.1871.9811.2871.1992.6561.1881.2581.1131.2751.2322.1461.5021.3811.2331.7046.020.8231.0411.1210.7476.237
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.9020.4520.1120.3841.8710.3670.2890.3180.2250.3040.6660.2620.2350.8010.5610.2730.6680.1760.1210.6290.3150.4620.2850.370.3150.2960.270.317
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery17.916.37.117.838.321.118.821.29.613.111.510.39.641.138.115.019.414.710.231.824.538.510.731.125.026.621.225.7

us-gaap:CommercialRealEstatePortfolioSegment


Financing
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
Value0.5140.20.9040.1750.4930.2631.4040.3850.2470.481.3640.1932.3871.6871.0370.3230.2760.5541.9160.3640.2960.3690.4910.2131.8240.3120.5720.2750.3420.145
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery10.27.213.57.131.412.228.822.216.132.058.18.341.466.342.516.618.830.455.630.524.918.638.217.868.726.345.524.726.811.8

us-gaap:ResidentialPortfolioSegment


Financing
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
Value0.0360.2040.0690.0250.030.060.050.2030.140.0290.0470.4661.5220.040.1650.0550.0540.1780.0210.0610.0310.1120.0550.1360.0160.0760.0190.1110.0740.131
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.77.41.01.01.92.81.011.79.11.92.020.126.41.66.82.83.79.80.65.12.65.74.311.30.66.41.510.05.810.6

wtfc:CommercialIndustrialAndOtherPortfolioSegment


Financing
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.4280.1120.3840.3670.2890.318
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery17.37.117.821.118.821.2

wtfc:ConsumerAndOtherPortfolioSegment


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.0340.0320.020.0580.0410.0360.060.056
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.71.20.83.71.92.13.93.7

wtfc:HomeEquityPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.3280.1010.0770.1110.0460.2940.1660.1830.0680.062
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery6.53.61.24.52.913.73.410.54.44.1

wtfc:PremiumFinanceReceivablePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.2391.7821.4451.720.8331.111.350.5630.7340.556
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery64.164.321.669.453.051.627.632.447.737.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
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
Value6.975161711167.4371711236.649.5066.9816.879.2786.1326.4186.7283.4176.2136.9076.0975.4747.8496.8776.514.2717.1268.1027.8599.0171612-19.77613262318-15.467-26.175-27.657-32.273-26.347-24.062-22.223-38.603
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3.237115.6862.153116.775170.5036.4163.2192.212.6871.342.2650.9130.6413.0543.4690.7210.6711.3690.9641.2430.6770.2890.8322.3840.648
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs46.473.133.528.963.960.672.97.667.546.132.229.021.935.313.618.849.250.211.812.317.414.019.115.94.110.330.37.2

us-gaap:CommercialRealEstatePortfolioSegment


Financing
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
Value1.4120.986.6371.5297.2240.570.5330.8090.3263.7340.2190.2080.1550.8131.0010.9891.9850.2610.3750.3820.5020.6712.7341.9480.8561.0054.4344.512.3514.493
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs20.26.139.013.042.67.73.07.21.456.22.33.02.38.816.315.429.57.66.05.58.212.334.828.313.123.562.255.729.949.8

us-gaap:ResidentialPortfolioSegment


Financing
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
Value0.0030.0020.1140.0830.2930.4010.4830.0250.2870.0030.2670.3370.180.5710.5420.2670.1460.3290.410.1340.6930.4930.2111.1380.9230.6310.630.2050.6890.226
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.00.00.70.71.75.42.80.21.20.02.84.82.66.28.84.22.29.66.61.911.49.02.716.514.214.88.82.58.82.5

wtfc:CommercialIndustrialAndOtherPortfolioSegment


Financing
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value5.275.6862.1536.775170.503
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs44.833.528.960.672.97.6

wtfc:ConsumerAndOtherPortfolioSegment


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.1040.1140.1030.0990.1280.1170.1360.102
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs1.50.70.90.61.71.00.61.5

wtfc:HomeEquityPortfolioSegment


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.1420.6830.1380.2391.0011.331.5940.690.088
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs2.04.01.21.413.57.614.22.91.3

wtfc:PremiumFinanceReceivablePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.0773.2394.2144.643.4343.1843.8171.8665.0092.21
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs29.820.124.739.420.242.821.716.721.033.3

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value4.1992.1265.4627.5969.017236.761139.489234.4154.233190.99181.6632.211.5133.4480.0710.6558.7230.2010.2221.3170.2943.8150.6672.245.2451.9324.003142.2772.6599.516
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2


Financing
Period End2021-06-302021-03-312020-12-31
Value4000.0198000.0-1300000.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2.9265.213-2.56621128.1049.8746.545142.799-1.4039.1114.3316.3275.4491.2970.260.266.4491.1911.4131.392-0.2610.8160.8332.0480.0992.0284.1769.984-1.2872.9724.562147.1027.84111
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment

wtfc:ResidentialRealEstateAndOther


Financing
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
Value0.3790.596-1.7482.1312.5072.510.9723.9141.11.7590.51.4570.5552.5511.7680.0520.2320.2320.00.00.2220.00.2230.1310.8330.261-0.1690.380.1690.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment113.011.468.110.019.431.09.859.87.762.8-35.616.012.840.332.44.089.289.20.00.015.70.0-85.416.1100.012.7-170.718.74.00.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialRealEstatePortfolioSegment, wtfc:NonConstructionLoan


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.1763.121146.1810.7580.6820.9840.757
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment140.259.968.447.89.410.46.927.0

wtfc:CommercialIndustrialAndOtherPortfolioSegment, wtfc:CommercialIndustrialAndOtherLoans


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.3711.4964.6074.2524.8361.949120.283
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment146.928.721.632.959.729.885.410.1

us-gaap:GainLossOnFairValueHedgesRecognizedInEarnings us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:GainLossOnFairValueHedgesRecognizedInEarnings

us-gaap:InterestRateSwap, us-gaap:DesignatedAsHedgingInstrument, wtfc:InterestandFeeIncomeLoansandLeases


Gain
Period End2021-06-302021-03-31
Value43000.0-13000.0
Percentage of GainLossOnFairValueHedgesRecognizedInEarnings100.0100.0

us-gaap:GainLossOnFairValueHedgesRecognizedInEarnings us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:InterestRateSwap, wtfc:InterestandFeeIncomeLoansandLeases


Gain
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-24000.0-37000.019000.0-2000.02000.0-42000.0
Percentage of GainLossOnFairValueHedgesRecognizedInEarnings0.00.00.00.00.00.0

us-gaap:GainLossOnSaleOfMortgageLoans

us-gaap:GainLossOnSaleOfMortgageLoans


Gain
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
Value46857810510351384532182431301821232716383126162124382020222012119.16627273130151416210.354.1626231310
Percentage of GainLossOnSaleOfMortgageLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value-29000.0-229000.0-189000.0-7000.04000.0-49000.0-6000.0-42000.05000.0-98000.052000.07000.0-25000.0104000.0-52000.0-23000.0163000.0216000.092000.018000.0-21000.0-295000.0-109000.0-322000.0-81000.020000.0-103000.0234000.0-795000.0-398000.0375000.01000.0-1000.0369000.0-231000.0-459000.0-12000.019000.0-24000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:GainsLossesOnSalesOfOtherRealEstate


Gains
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
Value-272000.0604000.0488000.0239000.0-307000.01001000.0-98000.0-708000.0-929000.0-186000.0-856000.0-800000.0-621000.0-2387000.0330000.0-73000.0-68000.0-828000.0-446000.0-613000.0-441000.0119000.0-235000.01015000.0-979000.0549000.0-1107000.0732000.0-900000.0-2460000.0-1459000.0-603000.04584000.0-2658000.0-3010000.0-2004000.0-15798000.05496000.0
Percentage of GainsLossesOnSalesOfOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

wtfc:SpecialtyFinance


Goodwill
Period End2021-06-302021-03-31
Value319000.0310000.0
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value319000.0310000.01063000.0431000.0772000.0-1779000.0442000.0-596000.0527000.0517000.0-1276000.0402000.0-417000.0-616000.0-137000.01761000.0919000.0-245000.0-533000.0-200000.01693000.01214000.0-867000.0-1495000.0784000.0-2155000.0-970000.0-1316000.0961000.0-822000.0-648000.0438000.0-721000.0-1769000.0
Percentage of GoodwillTranslationAndPurchaseAccountingAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments us-gaap:StatementBusinessSegments

wtfc:SpecialtyFinance


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value319000.0310000.01063000.0431000.0772000.0-1779000.0443000.0-256000.0441000.0480000.0-1276000.0402000.0-417000.0-616000.0-192000.0924000.0624000.0202000.0-363000.0144000.01409000.0-867000.0-1495000.0784000.0-2155000.0-970000.0-1316000.0961000.0-822000.0-648000.0
Percentage of GoodwillTranslationAndPurchaseAccountingAdjustments100.0100.0100.0100.0100.0100.0100.243.083.792.8100.0100.0100.0100.0140.152.567.9-82.4181.58.5116.1100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet

us-gaap:IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet


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
Value4037000.01620000.0618000.02195000.0-1670000.0-280000.01630000.01374000.0-650000.01610000.0-3040000.0-1000000.0-7882000.0-1900000.02800000.0350000.0110000.0-2010000.0-330000.0-1355000.0-1400000.0635000.0-662000.0-1460000.04466000.01066000.0-2403000.0-1575000.01315000.0-4069000.01700000.03039000.0600000.0750000.0-5769000.0-815000.0363000.03160000.0-10000.0-1801000.04375000.0812000.0-893000.01151000.03313000.0107000.0
Percentage of IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


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
Value93578012481924190135468711915527101027338108695288289875713601106824477411339143486216117422460-118.52128272-314.6183373053392692.334139344-100.938-157.327217329-192.207
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-33.646-109.554-23.042-16.187-43.453214-48.1224111029353665-4.566631748-3.635-87.891540753672162115-36.822-14.303-27.584-24.7585.737-68.19332-28.94-231.78823510
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value33-1.02680-61.17935-7.829-3.072-58.05968-19.314-90.167-29.2087912111-58.70660-83.34882-39.674581229-46.47466-48.87416-60.12741-37.34828-37.366.687-19.617-3.11413022-11.689
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:IncreaseDecreaseInTradingSecurities


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
Value1.7160.28-1.0490.83-1.3671.189-2.1360.7741.871-1.1331.004-0.174-0.820.6870.352-1.3441.273-1.2750.897-2.5211.4971.668-2.8641.715-6.2146.605-4.8093.7811.1660.5710.238-0.4-0.3770.453-0.0520.027-0.532-1.352.193-0.212-1.72-2.65-0.056-33.326-1.6776.164
Percentage of IncreaseDecreaseInTradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InformationTechnologyAndDataProcessing


Information
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
Value6.926.0485.7285.689108.3737.5696.5226.2047.5258.4479.3358.7528.4937.9157.8517.8047.9257.6877.4327.1386.5197.2848.1276.0815.4485.3134.7654.5434.7154.8314.8844.3584.5994.1784.1033.843.6184.0623.8363.1473.5234.3883.8913.6693.407
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


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
Value319305307311329344349354346333320304284261251247231215215208197192187185175170172170166161160161156152156158155156157154145147153147149142
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeSecuritiesOther

us-gaap:InterestAndDividendIncomeSecuritiesOther


Interest
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
Value23191821273227242727139.699.2249.3598.7528.0867.69110111212119.547.2367.4381111
Percentage of InterestAndDividendIncomeSecuritiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value284274280280294301308314309296
Percentage of InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansHeldForSaleMortgages

us-gaap:InterestAndFeeIncomeLoansHeldForSaleMortgages


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8.1839.0366.3575.7914.7643.1653.2013.4783.1042.2093.4095.2854.2262.8182.0653.2233.422.398
Percentage of InterestAndFeeIncomeLoansHeldForSaleMortgages100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseBorrowings us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpenseBorrowings

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.6530.6690.7290.740.4260.2920.2550.1960.0980.0270.2360.00.00.0
Percentage of InterestExpenseBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseDeposits


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
Value24273239506774766760554835262423181616151312121211111212111112121314161617181921222327313133
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.0544.8974.4033.8844.3630.559-0.551-2.635-4.179-3.589-3.211-2.319-1.339-0.68
Percentage of InterestExpenseDeposits20.817.513.59.98.70.8-0.7-3.5-6.2-5.9-5.7-4.8-3.8-2.6

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm


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
Value4.8874.844.9524.9474.9343.361.4611.7744.1932.452.5631.9474.2633.6392.1242.1512.9331.592.4392.5772.9842.8862.6842.4581.8122.1562.5342.6412.7052.6432.72.7292.8212.7642.8352.8172.8673.5844.1864.1664.013.9584.0384.0424.0944.346
Percentage of InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseJuniorSubordinatedDebentures


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
Value2.7242.7042.7422.7032.7522.8112.892.8973.0643.152.9832.942.8362.4632.3012.642.4332.4082.532.42.3532.222.1962.1241.9771.9331.9422.0912.0422.0041.9253.1833.1423.1193.1923.1293.1383.1573.0434.4374.4224.374.4414.4484.4044.375
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.1591.131.1311.0430.6620.2390.1170.0110.00.00.00.0
Percentage of InterestExpenseJuniorSubordinatedDebentures42.541.841.238.624.18.54.00.40.00.00.00.0

us-gaap:InterestExpenseOtherLongTermDebt

us-gaap:InterestExpenseOtherLongTermDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.5682.6092.7793.0123.4363.5463.2733.4663.5253.633
Percentage of InterestExpenseOtherLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestExpenseSubordinatedNotesAndDebentures


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
Value5.5125.4775.5095.4745.5065.4725.5045.472.8061.7751.7881.7731.7871.7731.7861.7721.7861.7721.7791.7781.7771.7771.7771.7761.7771.7751.7761.7760.3540.00.0160.040.0520.0590.0660.0670.1260.1690.1760.1680.1940.2120.2330.2650.2560.241
Percentage of InterestExpenseSubordinatedNotesAndDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDebtSecuritiesTradingOperating

us-gaap:InterestIncomeDebtSecuritiesTradingOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000.02000.011000.06000.013000.07000.06000.020000.05000.08000.014000.011000.04000.014000.0
Percentage of InterestIncomeDebtSecuritiesTradingOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeDepositsWithFinancialInstitutions


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
Value1.1531.1991.2941.1811.314.7688.971105.2065.35.6285.4233.2432.7962.7233.2721.6341.6231.5411.1560.7930.7460.4930.3720.3050.3160.4950.4090.3190.2490.4350.2290.4110.5690.7390.3620.2030.2480.6960.9170.870.9361.3421.3391.2151.274
Percentage of InterestIncomeDepositsWithFinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


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
Value29430725823012820825425424125124323623321621120819518718317516616315815714714514714514214213813012011511311310710810589798483776366
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0016000.086000.0390000.0310000.000001000.00001000.01000.01000.01000.01000.01000.001000.01000.02000.03000.012000.06000.04000.04000.04000.04000.015000.013000.07000.06000.012000.033000.028000.023000.032000.039000.035000.034000.049000.0
Percentage of InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell0.00.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value1721801711641541361451411331251221231211121181061069910410310095999794908785817974787977767568696661535659575049
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:MarketableSecuritiesGainLoss

us-gaap:MarketableSecuritiesGainLoss


Marketable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1285000.01154000.01214000.0411000.0808000.0-4359000.0587000.0710000.0864000.01364000.0-2649000.090000.012000.0-351000.039000.047000.0-55000.0
Percentage of MarketableSecuritiesGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarketableSecuritiesRealizedGainLoss

us-gaap:MarketableSecuritiesRealizedGainLoss


Marketable
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1214000.0411000.0808000.0-4359000.0587000.0710000.0864000.01364000.0-2649000.090000.012000.0-351000.014000.039000.047000.0-55000.01575000.03305000.01440000.01325000.0-79000.0-98000.0-24000.0524000.0
Percentage of MarketableSecuritiesRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarketableSecuritiesRealizedGainLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Marketable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value584000.0210000.021000.050000.0-341000.0491000.043000.0400000.0523000.0-67000.027000.01001000.0-20000.0-975000.014000.039000.047000.0-55000.01575000.03305000.01440000.01325000.0-98000.0
Percentage of MarketableSecuritiesRealizedGainLoss0.00.01.712.2-42.2-11.37.356.360.5-4.9-1.01112.2-166.7277.8100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments

us-gaap:MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments


Marketable
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
Value584000.0210000.021000.050000.0-341000.0491000.0-353000.0796000.0523000.0-67000.027000.01001000.0-20000.0-975000.014000.039000.047000.0-55000.01575000.03305000.01440000.01325000.0-79000.0-98000.0
Percentage of MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MortgageServicingRightsMSRImpairmentRecovery

us-gaap:MortgageServicingRightsMSRImpairmentRecovery


Mortgage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value14-7.877141218165.119118.381109.03
Percentage of MortgageServicingRightsMSRImpairmentRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
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
Value2802862812642592342492342292142112132061941961831831681801761701531661591541471431381331311261271281201291241171171181069798106999283
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


Noninterest
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
Value1291861581701611131121159881759995858179896885868468656477645757544546546357656250474467364044545042
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-15.344-14.122-13.54-13.964-14.001-13.199-11.918-12.158-11.741-11.251-10.332-10.344-10.085-9.55164-9.509-9.329-8.909-8.342-8.397-8.359-8.07-7.167-7.247-7.388-6.97-6.619-6.833-6.925-6.612-18.88-4.234-6.244-5.969-13.426-3.156
Percentage of NoninterestIncome-11.9-7.6-8.6-8.2-8.6-11.7-10.6-10.6-12.0-13.8-13.7-10.4-10.6-11.179.4-11.9-10.4-13.0-9.8-9.7-9.9-11.7-11.0-11.2-9.6-10.8-11.5-11.8-12.8-14.5-40.7-7.7-9.8-10.4-20.6-5.0

us-gaap:OperatingSegments


Noninterest
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
Value1442001711841751261241271099285110105958989997793959376727284716464615252607063
Percentage of NoninterestIncome111.9107.6108.6108.2108.6111.7110.6110.6112.0113.8113.7110.4110.6111.1110.9111.9110.4113.0109.8109.7109.9111.7111.0111.2109.6110.8111.5111.8112.8114.5113.2111.5109.8110.4

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtfc:CommunityBanking


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value9014712113612981788265484669655651526542616260454445564437383327303745404848
Percentage of NoninterestIncome69.979.076.780.380.171.569.672.066.659.161.969.869.066.063.065.972.362.171.872.471.766.468.470.273.069.664.866.061.660.065.469.070.970.874.577.7

us-gaap:OperatingSegments, wtfc:SpecialtyFinance


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value222321212121202019191616161516161314121212128.3558.2649.1357.8717.8788.328.4557.881252.1258.1937.305221.074
Percentage of NoninterestIncome17.412.413.712.513.518.818.117.419.924.022.417.017.118.420.020.515.320.614.814.114.718.012.812.711.912.213.714.415.617.354.53.912.812.735.01.7

us-gaap:OperatingSegments, wtfc:WealthManagement


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3130282624242524242522232322222020201920191819181918191819169.6261916157.20316
Percentage of NoninterestIncome24.616.218.115.315.121.322.921.225.430.729.423.624.526.827.825.522.930.323.223.123.427.329.828.324.729.033.031.435.637.220.834.826.126.911.025.6

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:NoninterestIncomeOtherOperatingIncome


Noninterest
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
Value201519131418141714161016141112131812121311159.4478.843117.9375.4855.2716.2236.0857.328.917.0796.158-0.6838.2877.81510-2.8678.4937.7726.2055.0665.2814.9643.634
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


Occupancy
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
Value171919151617171415161514131314131213141211111312111211109.85109.9949.0798.7078.8538.488.0247.7288.0627.9757.5126.7726.5055.9276.2546.0336.23
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeaseLeaseIncome


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value121412111111-25.154121110-15.7699.1328.7469.691
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value4.167-44.715-4.011-10.7583.93366-2.26413182726-14.031-6.917-25.758-1.40.609103.646-35.1021.8225.17516-10.39619-32.42715130.9031513-10.947-1.505-43.123-4.8-1.3082.1114.135-2.432-6.6750.516.941
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-4.546-9.994-4.3252.793268.6678.44829-9.484-7.139-26.6250.3015.087126.121-35.9490.9253.51421-14.12912-31.0726.3075.133-8.621215.966-18.9191.927-49.089
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-11.483323.466-6.092-29.17-3.233-13.257-1.0391.8511.7712.7462.6170.228-0.60.7654.3981.037-0.822-0.1490.086-0.287-0.147-0.593-0.4490.252-0.691-0.356-0.045-0.5180.351
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax252.6-323.6-80.1-218.1-109.3-37.3-156.9-3.6-19.5-24.8-10.3869.44.5-4.612.5-12.2112.1-23.4-0.7-0.6-2.30.5-9.4-8.7-2.9-3.2-6.00.2-26.9-0.7

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value4.628-44.519-10.6823.71867131927-13.277-6.914-26.474-1.3980.653104.479-37.9981.5323.72415-10.52218-32.44115130.8121513-12.951-1.46-43.122
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-101.8445.5247.0133.1251.0154.3227.395.8140.096.899.4-464.512.882.773.2105.7165.6106.072.174.5153.5104.4252.8264.5-9.472.3230.068.5-75.887.8

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value2.3092.182.8915.167-11.145-1.4712.5052.2771.942-1.996-2.897-0.9184.2062.8330.877-2.349-1.6440.6126.038-3.693-6.3371.516-9.045-7.995-9.6856.707-7.4-5.9233.905-6.318
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-50.8-21.8-66.8185.0-41.8-17.029.77.8-20.528.010.9-305.082.721.914.36.5-177.717.428.626.1-51.2-4.9-143.4-155.8112.330.9-124.031.3202.612.9

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-8.788501710-2.867-38.6935.327-6.848-22.168-4.996-5.5290.2121.082
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-2.341134.6832.77-0.773-10.3221.41-1.834-5.918-1.345-1.4830.0570.29
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:InterestRateContract


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-15.6544.726-8.318-39.783-4.42-18.087-1.434-2.5542.5312.4213.755
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:InterestRateContract, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value-15.65444-8.318-39.783
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:InterestRateContract


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.8665.6675.4511.09-2.428-4.081-3.562-2.975-2.319-1.339-0.68
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:InterestRateContract, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.8666.6965.4511.09
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value2.8762.7349.3063.7166.677-14.3333.249-1.8893.2322.891-8.2892.586-2.66-3.853-1.2325.6433.821.215-3.229-2.2370.8568.347-5.101-8.6822.072-12.29-10.37-13.0629.045-9.959-7.9894.97-8.241-6.304-2.898.4382.7010.00.00.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value567000.0554000.0825000.01510000.0-3188000.0-418000.0727000.0614000.0644000.0-664000.0-956000.01437000.0987000.0338000.0-593000.0244000.02309000.0-2345000.0556000.0-3245000.0-3377000.02338000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value584000.0210000.021000.050000.0-341000.0491000.043000.0400000.0523000.0-67000.027000.01001000.0-20000.0-975000.014000.039000.047000.0-55000.01575000.03305000.01440000.01325000.0-79000.0-98000.0-24000.0524000.018000.0-153000.0-336000.0-33000.0-3328000.075000.02000.0251000.02561000.0409000.01109000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value427000.0154000.016000.036000.0-249000.0359000.032000.0292000.0383000.0-49000.019000.0730000.0-12000.0-713000.08000.024000.029000.0-34000.0957000.02005000.0875000.0804000.0-48000.0-60000.0-14000.0318000.010000.0-91000.0-203000.0-20000.0-2004000.045000.01000.0151000.01555000.0247000.0664000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value157000.056000.05000.014000.0-92000.0132000.011000.0108000.0140000.0-18000.08000.0271000.0-8000.0-262000.06000.015000.018000.0-21000.0618000.01300000.0565000.0521000.0-31000.0-38000.0-10000.0206000.08000.0-62000.0-133000.0-13000.0-1324000.030000.01000.0100000.01006000.0162000.0445000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax


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
Value6.312-60.726-5.395-14.5635.06891-2.98118263836-18.149-9.455-36.184-3.660.811177.379-62.6012.5255.96825-17.3231-53.426221.3452622-21.453-2.419-71.463-7.4550.1323.9217.959-3.219-10.7581.212121.37-17.2576.813136.798
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4.628-44.519-3.957-10.6823.71867-2.18613192726-13.277-6.914-26.474-1.3980.653104.479-37.9981.5323.72415-10.52218-32.44115130.8121513-12.951-1.46-43.122-4.6490.2472.3584.799-1.943-6.4950.6477.6410.812
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.684-16.207-1.438-3.8811.3524-0.7954.866.977109.769-4.872-2.541-9.71-2.2620.1586.912.9-24.6030.9932.2449.988-6.79812-20.959108.9910.533108.804-8.502-0.959-28.341-2.806-0.1151.5633.16-1.276-4.2630.5655.0020.558
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


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
Value24232828272429242422192020191717191720201915191818171717151316151614181515141412131113121111
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRevenueExpenseFromRealEstateOperations

us-gaap:OtherRevenueExpenseFromRealEstateOperations


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-769000.0251000.0114000.0168000.0-237000.0876000.0-536000.0-1170000.0-1290000.0-632000.0
Percentage of OtherRevenueExpenseFromRealEstateOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities


Payment
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0160.03.2470.00.00.00.00.00.00.0390.00.01.058
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities0.0100.00.0100.00.00.00.00.00.00.0100.00.00.0100.0

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1724222123512226221012161245142011536789271152109677887995511347221177125912127368089731179941909904840527742940105097411781119
Percentage of PaymentsForOriginationAndPurchasesOfLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromFederalHomeLoanBankStock

us-gaap:PaymentsForProceedsFromFederalHomeLoanBankStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.7440.2930.02-0.0031.025338.0250.6883.013-2.341-8.6443.299-8.257142.7976.381.908-54.593.8648.3118.09711110.49-3.131.36610
Percentage of PaymentsForProceedsFromFederalHomeLoanBankStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLimitedPartnership

us-gaap:PaymentsForProceedsFromLimitedPartnership


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value16000.0-60000.0-682000.0251000.00355000.0-423000.0-760000.0-409000.0-363000.0
Percentage of PaymentsForProceedsFromLimitedPartnership100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31201