STT


Line plots across dimensions of each concept
Tables

Table of contents



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

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

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

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

us-gaap:InterestExpense

us-gaap:InterestExpenseLongTermDebt

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ComprehensiveIncomeNetOfTax

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

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:Assets
stt:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:StatementGeographical

us-gaap:Liabilities
stt:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

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

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

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

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends

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

us-gaap:UnrecognizedTaxBenefits

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

stt:AcquisitionAndRestructuringCosts

stt:BankOperationsExpense

stt:ChangeInUnrealizedGainsLossesRelatedToFinancialInstruments

stt:ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd
us-gaap:DerivativeInstrumentRisk

stt:DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities

stt:FeeRevenues
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:FeesAndCommissionsForeignExchangeTradingServices
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:FeesAndCommissionsManagementFees
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:FeesAndCommissionsProcessingFeesAndOther
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:FeesAndCommissionsSecuritiesFinance
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:FeesAndCommissionsServicingFees
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:InterestEarningAssetsOther

stt:InterestExpenseInvestmentSecuritiesPurchasedUnderMoneyMarketFacility

stt:InterestIncomeFromOtherInvestments

stt:InterestIncomeInvestmentSecuritiesPurchasedUnderMoneyMarketFacility

stt:NetIncreaseDecreaseInFederalFundsSoldAndSecuritiesPurchasedUnderResaleAgreements

stt:NetIncreaseinShortTermBorrowingsUnderMoneyMarketLiquidityFacility

stt:NoncashAdjustmentsForDepreciationAmortizationAccretion

stt:OtherComprehensiveIncomeLossChangeInNetUnrealizedGainLossOnAfsSecuritiesNetOfReclassAndExpectedLossFromOttiRelatedTaxes

stt:OtherComprehensiveIncomeLossChangeInUnrealizedGainLossOnAfsSecuritiesDesignatedAsFairValueHedgesRelatedTaxes

stt:OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax

stt:OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax

stt:OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditRelatedTaxes

stt:OtherComprehensiveIncomeLossMinimumPensionLiabilityNetAdjustmentTax

stt:OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct
us-gaap:StatementEquityComponents

stt:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax

stt:OtherInterestEarningLiabilities

stt:PreTaxMargin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementClassOfStock, us-gaap:VariableRate
stt:PreferredStockDividendPaymentRateBasisSpreadOnVariableRate

stt:ProceedsFromUnderMoneyMarketLiquidityFacility

stt:PurchasesUnderMoneyMarketLiquidityFacility

stt:RegulatoryFeesandAssessments

stt:RepurchasesOfCommonStockForEmployeeTaxWithholding
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
stt:RevenuefromOtherThanContractwithCustomer
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

stt:SecuritiesProcessingExpense

stt:StockOptionsAndStockAwards
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet

us-gaap:AmortizationOfIntangibleAssets
us-gaap:StatementBusinessSegments

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByAssetClass, us-gaap:IncomeStatementLocation

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByAssetClass, us-gaap:IncomeStatementLocation

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommunicationsAndInformationTechnology

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:HedgingDesignation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStock

us-gaap:DividendsPreferredStockCash
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType
us-gaap:StatementEquityComponents

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FairValueByAssetClass
us-gaap:ClassOfFinancingReceivableTypeOfBorrower
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:FloorBrokerageExchangeAndClearanceFees

us-gaap:GeneralInsuranceExpense

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments
us-gaap:StatementBusinessSegments

us-gaap:ImpairmentOfInvestments

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

us-gaap:IncreaseDecreaseInCashCollateralForLoanedSecurities

us-gaap:IncreaseDecreaseInOtherDeposits

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherReceivables

us-gaap:IncreaseDecreaseInTimeDeposits

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:IncreaseInCarryingAmountOfRedeemablePreferredStock
us-gaap:StatementEquityComponents

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestIncomeOperating

us-gaap:InterestIncomeSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeSecuritiesStateAndMunicipal

us-gaap:InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment

us-gaap:LaborAndRelatedExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:MarketingAndAdvertisingExpense

us-gaap:NoninterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:NoninterestIncomeOther

us-gaap:NumberOfReportableSegments

us-gaap:OccupancyNet

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherExpenses

us-gaap:OtherGeneralExpense

us-gaap:OtherNoncashIncomeExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireOtherInvestments
us-gaap:StatementClassOfStock
us-gaap:PreferredStockDividendRatePercentage
us-gaap:StatementClassOfStock
us-gaap:PreferredStockDividendsPerShareDeclared
us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromPaymentsForInInterestBearingDepositsInBanks

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:ClassOfFinancingReceivableTypeOfBorrower
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:RealizedInvestmentGainsLosses

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityOtherShares
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredParValueMethod
us-gaap:StatementEquityComponents
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:AdjustedQuarterlyAverageAssets
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedRepurchaseAgreements

stt:AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedSecurities

stt:AggregateFairValueOfIndemnifiedSecuritiesOnLoan

stt:CollateralforIndemnifiedSecuritiesInvestedinIndemnifiedRepurchaseAgreements

stt:DebtSecuritiesHeldtomaturityPurchasedUnderMoneyMarketFacility

stt:DebtSecuritiesHeldtomaturityUnderMoneyMarketFacilityAllowanceforCreditLoss

stt:DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset

stt:DerivativeAssetReverseRepurchaseAgreementsAndSecuritiesBorrowedNotOffsetAgainstCollateral

stt:DerivativeCollateralObligationtoReturnSecuritiesandCash

stt:DerivativeCollateralObligationtoReturnSecuritiesandCashNetofOffset

stt:DerivativeCollateralRighttoReclaimSecuritiesandCash

stt:DerivativeCollateralRighttoReclaimSecuritiesandCashNetofOffset

stt:DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset

stt:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellAndSecuritiesLoanedNotOffsetAgainstCollateral

stt:ExpectedLossesFromOtherThanTemporaryImpairmentOnHeldToMaturitySecurities

stt:FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

stt:FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
stt:LoansAndLeasesReceivableNumberOfLoans
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
stt:LoansAndLeasesReceivableOverdrafts

stt:NetUnrealizedGainsLossesonAvailableforsaleSecurities

stt:NetUnrealizedLossOnAvailableForSaleSecuritiesDesignatedInFairValueHedges

stt:NetUnrealizedLossOnHedgesOfNetInvestments

stt:NetUnrealizedLossRelatedToReclassifiedSecurities

stt:NumberofPortfolioSegments

stt:OtherAssetsAdvances

stt:OtherAssetsCollateralNet

stt:RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral

stt:RepurchaseAgreementsAndSecuritiesLoanedAmountOffsetAgainstCollateral

stt:RepurchaseAgreementsAndSecuritiesLoanedCollateralRightToReclaimCash

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedAmountOffsetAgainstCollateral

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedAsset

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedCollateralObligationToReturnCash

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedLiability

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossAsset

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossLiability
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RiskWeightedAssetsCreditRisk
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RiskWeightedAssetsMarketRiskEquivalents
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RiskWeightedAssetsOperationalRisk
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:SecuritiesBorrowedSubjectToMasterNettingArrangements
us-gaap:BalanceSheetLocation
stt:SecuritiesFinanceCollateralObligationtoReturnCash

stt:ShortTermBorrowingsUnderMoneyMarketLiquidityFacility

stt:StandByLettersOfCredit
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TierOneCommonRiskBasedCapital

stt:TierOneCommonRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TotalCapitalALLLandOther
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TotalCapitalQualifyingSubordinatedLongTermDebt
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TotalCommonStockandRelatedSurplus
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TotalRiskWeightedAssets
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
stt:TreasuryStockValueExcludingPreferredShares

stt:VariableInterestEntityFairValueOfCollateralizedAssets
us-gaap:FinancialInstrument

us-gaap:AccountsReceivableNet

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AdditionalPaidInCapital

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax
us-gaap:FairValueByFairValueHierarchyLevel, stt:FairValueMeasurementsSignificantUnobservableInputs
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
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:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:BankOwnedLifeInsurance
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:Capital
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

us-gaap:CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:CapitalToRiskWeightedAssets
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

us-gaap:CashAndDueFromBanks
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:CashCollateralForBorrowedSecurities
us-gaap:BalanceSheetLocation
us-gaap:ContractWithCustomerAssetNet
stt:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount

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:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DepositLiabilitiesCollateralIssuedFinancialInstruments

us-gaap:Deposits

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

us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeAssetMeasurementInput

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability

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

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk

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

us-gaap:DerivativeLiabilityFairValueGrossAsset
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByLiabilityClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeLiabilityMeasurementInput

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation

us-gaap:EquityMethodInvestments

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged

us-gaap:FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged

us-gaap:FinancingReceivableAfterDeferredIncomeOffset
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:FinancialInstrument
us-gaap:ClassOfFinancingReceivableTypeOfBorrower
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRevolving
us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, stt:FairValueMeasurementsSignificantUnobservableInputs
us-gaap:ForeignCurrencyContractAssetFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:HedgingDesignation
us-gaap:HedgedAssetFairValueHedge
us-gaap:HedgingDesignation
us-gaap:FairValueByAssetClass, us-gaap:HedgingDesignation
us-gaap:HedgedAssetFairValueHedgeCumulativeIncreaseDecrease
us-gaap:HedgingDesignation

us-gaap:HeldToMaturitySecurities
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:IncomeTaxesReceivable

us-gaap:InterestBearingDepositLiabilitiesDomestic
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:InterestBearingDepositLiabilitiesForeign
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:InterestBearingDepositsInBanks
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, stt:FairValueMeasurementsSignificantUnobservableInputs
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansHeldForSaleFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:LoansPledgedAsCollateral

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:LossContingencyEstimateOfPossibleLoss
us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

us-gaap:NoninterestBearingDepositLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:NotesReceivableGross
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:GeographicDistribution

us-gaap:NotesReceivableNet
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:OtherAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherAssetsMiscellaneous
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:OtherShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged
us-gaap:StatementScenario, us-gaap:StatementClassOfStock
us-gaap:PreferredStockLiquidationPreference
us-gaap:StatementClassOfStock
us-gaap:PreferredStockRedemptionAmount
us-gaap:StatementClassOfStock
us-gaap:PreferredStockSharesIssued
us-gaap:StatementClassOfStock
us-gaap:PreferredStockSharesOutstanding
us-gaap:StatementScenario, us-gaap:StatementClassOfStock
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:PreferredStockValue
us-gaap:StatementClassOfStock

us-gaap:PrepaidExpenseCurrentAndNoncurrent

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve

us-gaap:SecuritiesLoanedAndSecuritiesSoldUnderAgreementToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods

us-gaap:SecuritiesLoanedGross
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:SecuritiesPurchasedUnderAgreementsToResell
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseGross
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:TierOneRiskBasedCapital

us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets
us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:TradingLiabilitiesFairValueDisclosure
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency

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

us-gaap:TreasuryStockShares

us-gaap:UnusedCommitmentsToExtendCredit
stt:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504NANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆██▆▃▁▁503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503504504503502501501
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:TreasuryStock██▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▄▄▄▃▃▂▂▁▁▁▁▁▁1511461401311271231241381381361331291271211181141081041009692888378736255483525141050000
us-gaap:CommonStockSharesIssued ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▁503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503504504503NANANA
us-gaap:CommonStockSharesOutstanding ▁▂▄▆▇█351357363372376379NANANA367NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 357NA370377381NA379370372NA378380386NA393398403NA412416418NA429435438452461462480488490494501500498498498
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 353NA366373377NA374365367NA372375381NA388394399NA406410412NA421427430442452454472481484490496497495495494
us-gaap:EarningsPerShareBasic ▆▅▅▅▄▂██▆▂▇▆▃▅▄▅▁▄▄▂▂▃▄▅▁▄▄▂▅▂▁▃▂▂▃▁▂1.641.35999999999999941.441.441.21.03000000000000021.891.911.650.91000000000000011.691.561.171.45000000000000021.311.480.81.331.340.960.911.13000000000000031.281.410.831.21.261.01.391.00.861.111.010.941.090.870.99
us-gaap:EarningsPerShareDiluted ▆▅▅▅▄▂██▆▂▇▆▃▅▄▅▁▄▄▂▂▃▄▅▁▃▄▂▅▂▁▃▂▂▃▂▂1.621.34999999999999961.421.421.181.02000000000000051.871.881.620.89000000000000061.661.531.151.42999999999999971.291.470.791.30999999999999961.320.940.91.121.261.380.811.171.240.981.360.980.851.11.00.931.080.870.99
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:AccountServicing,stt:InvestmentServicing▂▃▂▁▁▃▄▆█128712991272125212511294133313811421NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:ForeignExchangeTradingServices,stt:InvestmentManagement▁██▇▇▇▇▇▄253535333433333330NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:ForeignExchangeTradingServices,stt:InvestmentServicing█▃▄▁▃▃▄▄▆1008890828686899195NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:ManagementServices,stt:InvestmentManagement▅▇▄▄▁▄█▇█449465445441420440474465472NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:ProcessingServicesandOther,stt:InvestmentServicing▆█▆▆▇█▁▁▁10713997104116140272319NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,stt:RevenueFromFees,stt:InvestmentManagement▄▇▄▄▁▄█▇▇474500480474454473507498502NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▆▄▅▅▃▂██▆▁▇▆▃▅▄▆▁▅▅▂▂▄▅▆▂▅▆▃▇▄▃▅▄▄▅▃▄580492528537452398709698605334629584446557507585319535543393377473542602356531571455654480417543502466540427492
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us-gaap:LiabilitiesAndStockholdersEquity █▄▄▄▃▄▃▄▄▃▃▃▃▄▄▄▄▄▄▆▅▅▅▅▄▃▃▃▂▂▂▂▂▁362527245610244606241540228332244626234007248308250286238425235986238274236802242698256140255386243685245192247274294571279476274119274805282324256663217180227300218189204522200777187956208795190455171796NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ▆▆▅▅▄▅▅▄▄▄▃▃▂▂▁▁██▇▇▇▇▆▇▆▆▅▅▄▄▄▃▃▂4459436742354091393741524110399940053881375036113463333332713164492948204768478046534599453846204521431941994109395538423814362935803523NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▇▇████▇▆▆▆▆▆▅▅▆▆▅▅▅▅▅▅▅▅▅▄▄▅▅▄▄▄▄▄▃▁▁23861244312520925454250382479024553225712239922317224972206821294212192215022073214962110321500215002081921473211562170021273204302008120869207491989720159196511983419180175691605915410
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us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▅█▅▄▅█▃██▃▅▇▄▂▆▆▇▄▁▅▅▃▃▆403910534717415-49516335422-143448365076-2142490350914-2736216028523379-255-4924397403-1410-15011947NANA113NANA1315NANA-1348NANA1803
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▆▆▅▇▅▇▆▆▅▆▆▆▆▆▅▆▆█▅▆▆▆▅▅-112773-5523-5656-1311821671-15927131637241-8973-108315863180632109782-3266-103138027-479846630-15846-991-458510571-19964-14514NANA8116NANA26323NANA-5594NANA2921
us-gaap:NetCashProvidedByUsedInFinancingActivities █▃▃▄▂▄▂▃▃▃▃▃▃▃▃▃▃▃▁▄▃▃▃▄▄1103644174118011976-2030413746-18326-446745763923-2938-2049-5124-1197248199091-8351-1034-457992070518881891-112622383513224NANA-6111NANA-28448NANA6268NANA-5268
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▅█▅▄▅█▃██▃▅▇▄▂▆▆▇▄▁▅▅▃▃▆403910534717415-49516335422-143448365076-2142490350914-2736216028523379-255-4924397403-1410-15011947NANA113NANA1315NANA-1348NANA1803
us-gaap:NetIncomeLoss ▆▄▅▅▄▂█▇▆▁▇▅▃▅▄▅▁▄▅▂▂▃▄▆▁▄▅▃▆▃▂▄▄▃▄▂▃634564583587508439765734661370685620502593563619368564585422409492560622363540579464674490427555513471546432495
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings634NA583587508439764733661370685620502593563619368576581414409492560622363NANA464NANA427NANA471NANA495
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▆▆▅▇▅▇▆▆▅▆▆▆▆▆▅▆▆█▅▆▆▆▅▅-112773-5523-5656-1311821671-15927131637241-8973-108315863180632109782-3266-103138027-479846630-15846-991-458510571-19964-14514NANA8116NANA26323NANA-5594NANA2921
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▅▇▅▅▅▄▄▄▄▅▅▅▄▄▅▅▅█▇▂▄▁▃▃1141612271711711731511381471521601611641361491601681602422059612964124110NANA119NANA85NANA89NANA25
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▃▃▄▂▄▂▃▃▃▃▃▃▃▃▃▃▃▁▄▃▃▃▄▄1103644174118011976-2030413746-18326-446745763923-2938-2049-5124-1197248199091-8351-1034-457992070518881891-112622383513224NANA-6111NANA-28448NANA6268NANA-5268
us-gaap:ProceedsFromIssuanceOfLongTermDebt 2497NANANA09950NANA00NANA0014920-122995915-9159940NANANANANANANA0NANA1986NANANA
us-gaap:PaymentsOfDividends ▇█▇▇█▇▆▅▆▅▆▄▆▅▅▄▅▄▅▃▃▂▂▂▁230239230227234220209189210191198178201182188169184166181152156143145131120NANA110NANA95NANA5NANA5
us-gaap:PaymentsOfDividends ▇█▇▇█▇▆▅▆▅▆▄▆▅▅▄▅▄▅▃▃▂▂▂▁230239230227234220209189210191198178201182188169184166181152156143145131120NANA110NANA95NANA5NANA5
us-gaap:PaymentsForRepurchaseOfCommonStock ▇▇▇▅▅▁▁▁▅▅▅▄▅▅▅▇▄█▃▅▇▆▆▆▆515485500300300000350350350238354336314447268559178313470410410410420NANA360NANA0NANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType stt:TwoPointFourZeroZeroPercentSeniorNotesDue2030,us-gaap:SeniorNotes,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504502495
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.30.30.30.3

Common Stock Par Or Stated Value Per Share

Shares Issued

us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503504504503502502501501495431398
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value151146140131127123124138138136133129127121118114108104100969288837873696255484535251416105000000012
Percentage of SharesIssued30.229.127.826.125.224.624.727.427.527.026.425.825.324.223.522.721.520.719.919.118.417.616.715.714.613.812.411.09.69.07.05.02.83.32.21.00.10.10.10.10.10.10.13.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503503504504503502495
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value351357363372376379367
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value357370377381379370372378380386393398403412416418429435438452461462480488490494501500498498498
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value353366373377374365367372375381388394399406410412421427430442452454472481484490496497495495494
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1.641.35999999999999941.441.441.21.03000000000000021.891.911.650.91000000000000011.691.561.171.45000000000000021.311.480.81.331.340.960.911.13000000000000031.281.410.831.21.261.01.391.00.861.111.010.941.090.870.99
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1.621.34999999999999961.421.421.181.02000000000000051.871.881.620.89000000000000061.661.531.151.42999999999999971.291.470.791.30999999999999961.320.940.91.121.261.380.811.171.240.981.360.980.851.11.00.931.080.870.99
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

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

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:OperatingSegments, stt:AccountServicing, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value128712991272125212511294133313811421
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues42.00.043.843.642.70.045.245.647.1
Percentage of Revenues us-gaap:OperatingSegments stt:AccountServicing stt:InvestmentServicing0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:ForeignExchangeTradingServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value253535333433333330
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.72.82.62.72.62.52.42.1
Percentage of Revenues0.80.01.21.11.20.01.11.11.0
Percentage of Revenues us-gaap:OperatingSegments stt:ForeignExchangeTradingServices stt:InvestmentManagement0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:ForeignExchangeTradingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1008890828686899195
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.86.87.16.56.96.66.76.66.7
Percentage of Revenues3.30.03.12.92.90.03.03.03.1
Percentage of Revenues us-gaap:OperatingSegments stt:ForeignExchangeTradingServices stt:InvestmentServicing0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:ManagementServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value449465445441420440474465472
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.935.835.035.233.634.035.633.733.2
Percentage of Revenues14.60.015.315.314.30.016.115.415.6
Percentage of Revenues us-gaap:OperatingSegments stt:ManagementServices stt:InvestmentManagement0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:ProcessingServicesandOther, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10713997104116140272319
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.310.77.68.39.310.82.01.71.3
Percentage of Revenues3.50.03.33.64.00.00.90.80.6
Percentage of Revenues us-gaap:OperatingSegments stt:ProcessingServicesandOther stt:InvestmentServicing0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value474500480474454473507498502
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.838.537.737.936.336.638.036.135.3
Percentage of Revenues15.50.016.516.515.50.017.216.516.6
Percentage of Revenues us-gaap:OperatingSegments stt:RevenueFromFees stt:InvestmentManagement0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value155115761523151315231588152215851612
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax120.5121.3119.7120.8121.7122.7114.2114.8113.4
Percentage of Revenues50.60.052.552.751.90.051.652.453.4
Percentage of Revenues us-gaap:OperatingSegments stt:RevenueFromFees stt:InvestmentServicing0.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, stt:SecuritiesFinancingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value575064757068739077
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.43.85.06.05.65.35.56.55.4
Percentage of Revenues1.90.02.22.62.40.02.53.02.6
Percentage of Revenues us-gaap:OperatingSegments stt:SecuritiesFinancingServices stt:InvestmentServicing0.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value474500480474454473507498502
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.838.537.737.936.336.638.036.135.3
Percentage of Revenues15.50.016.516.515.50.017.216.516.6
Percentage of Revenues us-gaap:OperatingSegments stt:InvestmentManagement104.60.0100.2100.298.70.0100.0100.4101.0

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value155115761523151315231588152215851612
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax120.5121.3119.7120.8121.7122.7114.2114.8113.4
Percentage of Revenues50.60.052.552.751.90.051.652.453.4
Percentage of Revenues us-gaap:OperatingSegments stt:InvestmentServicing59.40.062.863.061.60.062.362.663.9

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value3065304829032873293229862951302630192846284628102668253026202573248425222619261426052630258225982485242525602435235624232421242724912361231023042296
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value00000-800000000000000
Percentage of Revenues0.00.00.00.00.0-0.30.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues0.00.00.00.00.0-0.30.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:MaterialReconcilingItems0.00.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value453510479473460456507496497434437412407356381302288289286310
Percentage of Revenues14.816.716.516.515.715.317.216.416.515.215.414.715.314.114.511.711.611.510.911.9
Percentage of Revenues14.816.716.516.515.715.317.216.416.515.215.414.715.314.114.511.711.611.510.911.9
Percentage of Revenues us-gaap:OperatingSegments stt:InvestmentManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value26122538242424002472253824442530252224122409239822612174223922712196224923282298
Percentage of Revenues85.283.383.583.584.385.082.883.683.584.884.685.384.785.985.588.388.489.288.987.9
Percentage of Revenues85.283.383.583.584.385.082.883.683.584.884.685.384.785.985.588.388.489.288.987.9
Percentage of Revenues us-gaap:OperatingSegments stt:InvestmentServicing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value170118071649163617011737166517041698160616271638157213891503143714591495152614581453
Percentage of Revenues55.559.356.856.958.058.256.456.356.256.457.258.358.954.957.455.858.759.358.355.855.8
Percentage of Revenues55.559.356.856.958.058.256.456.356.256.457.258.358.954.957.455.858.759.358.355.855.8
Percentage of Revenues country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value136412411254123712311249128613221321124012191172109611411117113610251043108811501147
Percentage of Revenues44.540.743.243.142.041.843.643.743.843.642.841.741.145.142.644.241.341.441.544.044.0
Percentage of Revenues44.540.743.243.142.041.843.643.743.843.642.841.741.145.142.644.241.341.441.544.044.0
Percentage of Revenues us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Operating Costs And Expenses

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2042703573943542852442481991811581251401021109911710910194961021018910097104111111114140150147157180188217
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.78.912.313.712.19.58.38.26.66.45.64.45.24.04.23.84.74.33.93.63.73.93.93.44.04.04.14.64.74.75.86.25.96.67.88.29.5

Interest Expense Long Term Debt

us-gaap:InterestExpenseLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value881029910710696100979781787573696862616562616259606463595456525466737671727172
Percentage of InterestExpenseLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.93.33.43.73.63.23.43.23.22.82.72.72.72.72.62.42.52.62.42.32.42.22.32.52.52.42.12.32.22.22.73.03.13.03.13.13.1

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-300239-26442-26177-57-33815111525943591-50438-213306-180-145289-699-371-5914627326-55-248172-299146
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-9.87.8-9.11.5-0.95.9-1.9-11.25.04.09.115.53.4-19.91.5-8.312.3-7.1-5.511.1-26.8-14.1-22.91.81.113.4-2.1-10.27.3-12.36.0

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value140741381311276510213110234713715682-24872926299685695771281249216318314526716215974202189236-82207
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.62.44.84.64.32.23.54.33.412.24.85.63.1-9.82.73.62.53.92.62.13.62.95.04.83.76.77.16.011.36.76.63.08.18.010.2-3.69.0

Income Taxes Paid Net

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value5906734728937687945423205963459711155737-454567586846223495417-9092-36923646949-1953551397252787809119221471610875
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues19.222.116.331.126.226.618.410.619.712.134.141.127.6-17.921.622.834.18.818.916.0-3.53.5-1.435.526.039.1-7.614.659.310.432.53.336.639.163.726.538.1

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value634564583587508439765734661370685620502593563619368564585422409492560622363540579464674490427555513471546432495
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues20.718.520.120.417.314.725.924.321.913.024.122.118.823.421.524.114.822.422.316.115.718.721.723.914.622.322.619.128.620.217.622.920.619.923.618.821.6

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5-524-9041210
Percentage of NetIncomeLoss0.8-0.90.30.7-1.80.00.51.61.5
Percentage of Revenues0.2-0.20.10.1-0.30.00.10.40.3
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value634583587508439764733661370685620502593563619368576581414409492560622363464427471495
Percentage of NetIncomeLoss100.0100.0100.0100.0100.099.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.0102.199.398.1100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues20.720.120.417.314.725.924.221.913.024.122.118.823.421.524.114.822.822.215.815.718.721.723.914.619.117.619.921.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value580492528537452398709698605334629584446557507585319535543393377473542602356531571455654480417543502466540427492
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues18.916.118.218.715.413.324.023.120.011.722.120.816.722.019.422.712.821.220.715.014.518.021.023.214.321.922.318.727.819.817.222.420.219.723.418.521.4

Net Income Loss Attributable To Noncontrolling Interest

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value362527245610244606241540228332244626234007248308250286238425235986238274236802242698256140255386243685245192247274294571279476274119274805282324256663243291217180227300218189222582204522200777187956216827208795190455171796160505157946
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value1621
Percentage of Assets0.00.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0

us-gaap:StatementGeographical

us-gaap:NonUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value104440832808162085940777308170083100849007850082100815007320071600791008670084600816007810063300725006770060000
Percentage of Assets28.833.933.435.634.033.435.534.231.434.434.530.730.232.633.833.133.531.925.624.624.221.9
Percentage of Assets28.833.933.435.634.033.435.534.231.434.434.530.730.232.633.833.133.531.925.624.624.221.9
Percentage of Assets us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value338666221179219397216086203294219836209454225737227887216108213489216206215508221479233959233282222157224057225742273071258657252646253649260624235390222913196750207219197320201713183773180880167797197429189144170621152616142718143455
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets93.490.189.789.589.089.989.590.991.190.690.590.791.091.391.391.391.291.491.392.792.692.292.392.391.791.690.691.290.490.689.990.189.391.190.689.688.888.990.8

stt:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value35
Percentage of Liabilities0.00.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary18.823.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value362527245610244606241540228332244626234007248308250286238425235986238274236802242698256140255386243685245192247274294571279476274119274805282324256663243291217180227300218189222582204522200777187956216827208795190455171796160505157946
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2386124431252092545425038247902455322571223992231722497220682129421219221502207321496211032150021500208192147321156217002127320378204302008120869208692074919897201591939819651198341918017787175691605915410144911277411299
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.69.910.310.511.010.110.59.18.99.49.59.39.08.78.68.68.88.68.77.37.47.87.77.78.38.49.48.89.69.410.19.910.78.99.410.411.211.10.00.00.09.20.00.0

us-gaap:StatementEquityComponents

stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1544691343616-11-30-101-65-52-681954137-14-14-14-14-14-14-14
Percentage of StockholdersEquity0.60.20.40.10.10.1-0.0-0.1-0.5-0.3-0.2-0.00.40.40.20.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets0.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-175-187-180-179-179-143-156-156-158-170-184-186-188-194-182-185-185-183-253-257-267-272-203
Percentage of StockholdersEquity-0.7-0.8-0.7-0.7-0.7-0.6-0.6-0.7-0.7-0.8-0.8-0.8-0.9-0.9-0.8-0.8-0.9-0.9-1.2-1.2-1.3-1.3-1.0
Percentage of Assets-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value47-70-63-70-71-89-83-113-56
Percentage of StockholdersEquity0.2-0.3-0.2-0.3-0.3-0.4-0.3-0.5-0.3
Percentage of Assets0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value536409524378116-175-343-145-28103246195-79-286396396113-1287756371192-221
Percentage of StockholdersEquity2.21.72.11.50.5-0.7-1.4-0.6-0.10.51.10.9-0.4-1.31.81.80.5-0.60.40.31.80.9-1.1
Percentage of Assets0.10.20.20.20.1-0.1-0.1-0.1-0.00.00.10.1-0.0-0.10.20.20.0-0.10.00.00.10.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-920-876-985-874-1180-1356-1711-1488-1074-1009-984-1270-1805-2040-993-997-964-1442-1101-1011-1006-507-107489188-95-114-523251360186-537-299-659-315160-238-689-782-1707-1885-2238-5650-575
Percentage of StockholdersEquity-3.9-3.6-3.9-3.4-4.7-5.5-7.0-6.6-4.8-4.5-4.4-5.8-8.5-9.6-4.5-4.5-4.5-6.8-5.1-4.7-4.8-2.4-0.52.30.9-0.5-0.6-2.61.21.70.9-2.7-1.5-3.4-1.60.8-1.2-3.9-4.5-10.6-12.2-15.4-44.2-5.1
Percentage of Assets-0.3-0.4-0.4-0.4-0.5-0.6-0.7-0.6-0.4-0.4-0.4-0.5-0.8-0.8-0.4-0.4-0.4-0.6-0.4-0.3-0.4-0.2-0.00.20.1-0.0-0.1-0.20.10.20.1-0.3-0.2-0.3-0.20.1-0.1-0.40.00.00.0-1.40.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-2-2-1-2-3-2-5-7-6-6-6-7-8-9-11-13-15-16-18-22-25-29-47
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2
Percentage of Assets-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
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-1480-1072-1356-1035-1079-963-1113-1037-628-815-943-1248-1770-1875-1317-1351-1088-1394-1215-1070-1359-660229
Percentage of StockholdersEquity-6.2-4.4-5.4-4.1-4.3-3.9-4.5-4.6-2.8-3.7-4.2-5.7-8.3-8.8-5.9-6.1-5.1-6.6-5.7-5.0-6.5-3.11.1
Percentage of Assets-0.4-0.4-0.6-0.4-0.5-0.4-0.5-0.4-0.3-0.3-0.4-0.5-0.7-0.8-0.5-0.5-0.4-0.6-0.5-0.4-0.5-0.20.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value101551013210117101091008210061104189820979697999803980397969782977897679739974697429744974497919780976597379776975397139669966796349623954695579528947494169356931092669222918069924630
Percentage of StockholdersEquity42.641.540.139.740.340.642.443.543.743.943.644.446.046.144.144.245.346.245.345.346.845.646.245.045.848.047.748.446.346.346.448.447.449.348.547.849.152.653.057.759.863.354.741.0
Percentage of Assets2.84.14.14.24.44.14.54.03.94.14.24.14.14.03.83.84.04.03.93.33.53.63.63.53.84.04.54.34.44.34.74.85.14.44.65.05.55.80.00.00.05.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504502502502502495432398
Percentage of StockholdersEquity2.12.12.02.02.02.02.12.22.32.32.22.32.42.42.32.32.32.42.32.32.42.32.42.32.42.52.52.52.42.42.42.52.52.62.62.52.62.82.93.13.33.43.43.5
Percentage of Assets0.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.30.30.30.00.00.00.30.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value2471296236903690369036903690319631963196319631963196319631963196270327032703270319611961123312331233491490490489489488500500500500500500001883
Percentage of StockholdersEquity10.412.114.614.514.714.915.014.214.314.314.214.515.015.114.414.512.612.812.612.69.49.15.85.75.82.42.42.42.32.32.42.52.52.62.52.52.60.00.014.7
Percentage of Assets0.71.21.51.51.61.51.61.31.31.31.41.31.31.31.21.31.11.11.10.90.70.70.40.40.50.20.20.20.20.20.20.20.30.20.20.30.30.00.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value223152191821612212742091120606203871985619311188561867518202177621745917047166861623316049157951539015135148821453114114136391339512963125451209011751113921084610478101769889943090138634855680157588707191357745
Percentage of StockholdersEquity93.589.785.783.683.583.183.088.086.284.583.082.583.482.377.075.675.576.173.571.672.769.368.765.064.165.763.562.557.956.354.954.552.052.550.347.547.048.548.749.949.248.871.568.5
Percentage of Assets6.28.98.88.89.28.48.78.07.77.97.97.67.57.26.76.56.76.56.45.25.45.45.35.05.35.56.05.55.55.35.65.45.64.74.75.05.25.40.00.00.04.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-10664-10209-9729-9249-8969-8715-8735-9317-9334-9029-8697-8367-8159-7682-7382-7083-6719-6457-6143-5830-5519-5158-4785-4405-4028-3693-3166-2648-2134-1902-1455-1039-570-680-455-234-15-16-17-17-17-17-18-899
Percentage of StockholdersEquity-44.7-41.8-38.6-36.3-35.8-35.2-35.6-41.3-41.7-40.5-38.7-37.9-38.3-36.2-33.3-32.1-31.3-30.6-28.6-27.1-26.5-24.0-22.6-20.3-18.9-18.1-15.5-13.2-10.2-9.1-7.0-5.2-2.8-3.5-2.3-1.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-8.0
Percentage of Assets-2.9-4.2-4.0-3.8-3.9-3.6-3.7-3.8-3.7-3.8-3.7-3.5-3.4-3.2-2.9-2.8-2.8-2.6-2.5-2.0-2.0-1.9-1.7-1.6-1.6-1.5-1.5-1.2-1.0-0.9-0.7-0.5-0.3-0.3-0.2-0.1-0.0-0.00.00.00.0-0.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value445943674235409139374152411039994005388137503611346333333271316449294820476847804653459945384620452144174319419941094037395538423814367336293580352334253046
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.81.71.71.71.71.81.61.61.61.61.51.51.41.31.22.02.01.91.61.71.71.71.61.81.82.01.81.91.81.91.92.01.71.71.92.12.11.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value222522822306224422302214219321892194218621672137210120622042199419491894198420351933193719111920189618601816177217561728172017021736174717381853184518431953
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.90.90.91.00.90.90.90.90.90.90.90.90.80.80.80.80.80.80.70.70.70.70.70.70.80.80.80.80.80.80.80.90.80.81.01.11.11.2

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value7506755675007565754974466016597360686022599759455855581459115671573356715716572956635826589960376038603660065924591259775650561157005645563957485720559755215380451545504527
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.13.13.13.13.33.02.62.42.42.52.52.52.52.42.32.22.42.32.31.92.02.12.12.12.42.52.82.62.72.72.82.83.02.62.73.03.33.50.00.00.02.90.0

us-gaap:StatementBusinessSegments

stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value2642672642662662662672682712702692672642642663031303131303334373737373535363535363536393766666
Percentage of Goodwill3.53.53.53.53.53.64.44.54.54.54.54.54.54.54.50.50.50.50.50.50.50.60.60.60.60.60.60.60.60.60.60.60.60.60.60.70.60.10.10.10.10.1
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets stt:InvestmentManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.11.00.00.00.91.00.00.00.00.80.00.00.00.00.00.00.00.0

stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value724272897236729972837180574957055797575257285678559155505645564157025641568556985633579358656000600159995969588958775941561555765664561056035709568355915515537445094544
Percentage of Goodwill96.596.596.596.596.596.495.695.595.595.595.595.595.595.595.599.599.599.599.599.599.599.499.499.499.499.499.499.499.499.499.499.499.499.499.499.399.499.999.999.999.999.9
Percentage of Assets2.03.03.03.03.22.92.52.32.32.42.42.42.42.32.22.22.32.32.31.92.02.12.12.12.32.52.72.62.72.72.72.83.02.62.73.03.33.50.00.00.02.9
Percentage of Assets stt:InvestmentServicing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.02.83.00.00.02.93.10.00.00.03.30.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value196320302077215522082369146115001578161316581693171017501849168217491768182018711892202521212247230623602396240624522539231123342459
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.80.80.91.01.00.60.60.60.70.70.70.70.70.70.70.70.70.70.60.70.70.80.80.91.01.11.11.11.11.11.21.1

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CoreDeposits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value281292297309317326337346360366372377378384400406418421433440444469484507517526532533514
Percentage of FiniteLivedIntangibleAssetsNet14.314.414.314.314.413.823.123.122.822.722.422.322.121.921.624.123.923.823.823.523.523.222.822.622.422.322.222.220.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.10.20.20.20.20.20.20.20.20.2
Percentage of Assets us-gaap:CoreDeposits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value13421386141814711505165710771112117111991236126912841314139112221272128813281368138414811554164716911731175217591898
Percentage of FiniteLivedIntangibleAssetsNet68.468.368.368.368.269.973.774.174.274.374.575.075.175.175.272.772.772.973.073.173.273.173.373.373.373.373.173.174.8
Percentage of Assets0.40.60.60.60.70.70.50.40.50.50.50.50.50.50.50.50.50.50.50.50.50.50.60.60.70.70.80.80.9
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value33363741434647424748504748525854595959636475839398103112114127
Percentage of FiniteLivedIntangibleAssetsNet1.71.81.81.91.91.93.22.83.03.03.02.82.83.03.13.23.43.33.23.43.43.73.94.14.24.44.74.75.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.1
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TechnologyBasedIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3073163253343433407
Percentage of FiniteLivedIntangibleAssetsNet15.615.615.615.515.514.40.4
Percentage of Assets0.10.10.10.10.20.10.0
Percentage of Assets us-gaap:TechnologyBasedIntangibleAssets0.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value115122129136144151159166174181188196203211220111415192223273035373940404347494751
Percentage of FiniteLivedIntangibleAssetsNet5.96.06.26.36.56.410.911.111.011.211.311.611.912.111.90.70.80.81.01.21.21.31.41.61.61.71.71.71.81.92.12.02.1
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets stt:InvestmentManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.11.00.00.01.11.30.00.01.2

stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value184819081948201920642218130213341404143214701497150715391629167117351753180118491869199820912212226923212356236624092492226222872408
Percentage of FiniteLivedIntangibleAssetsNet94.194.093.893.793.593.689.188.989.088.888.788.488.187.988.199.399.299.299.098.898.898.798.698.498.498.398.398.398.298.197.998.097.9
Percentage of Assets0.50.80.80.80.90.90.60.50.60.60.60.60.60.60.60.70.70.70.70.60.70.70.80.80.91.01.11.01.11.11.11.11.1
Percentage of Assets stt:InvestmentServicing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.11.10.00.01.21.30.00.01.4

Deferred Tax Assets Liabilities Net

Long Term Debt

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

Minority Interest

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2386124431252092545425038247902455322571223992231722497220682129421219221502207321496211032150021500208192147321156217002127320378204302008120869208692074919897201591939819651198341918017787175691605915410144911277411299
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.69.910.310.511.010.110.59.18.99.49.59.39.08.78.68.68.88.68.77.37.47.87.77.78.38.49.48.89.69.410.19.910.78.99.410.411.211.10.00.00.09.20.00.0

us-gaap:StatementEquityComponents

stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value1544691343616-11-30-101-65-52-681954137-14-14-14-14-14-14-14
Percentage of StockholdersEquity0.60.20.40.10.10.1-0.0-0.1-0.5-0.3-0.2-0.00.40.40.20.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets0.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-175-187-180-179-179-143-156-156-158-170-184-186-188-194-182-185-185-183-253-257-267-272-203
Percentage of StockholdersEquity-0.7-0.8-0.7-0.7-0.7-0.6-0.6-0.7-0.7-0.8-0.8-0.8-0.9-0.9-0.8-0.8-0.9-0.9-1.2-1.2-1.3-1.3-1.0
Percentage of Assets-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value47-70-63-70-71-89-83-113-56
Percentage of StockholdersEquity0.2-0.3-0.2-0.3-0.3-0.4-0.3-0.5-0.3
Percentage of Assets0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value536409524378116-175-343-145-28103246195-79-286396396113-1287756371192-221
Percentage of StockholdersEquity2.21.72.11.50.5-0.7-1.4-0.6-0.10.51.10.9-0.4-1.31.81.80.5-0.60.40.31.80.9-1.1
Percentage of Assets0.10.20.20.20.1-0.1-0.1-0.1-0.00.00.10.1-0.0-0.10.20.20.0-0.10.00.00.10.1-0.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-920-876-985-874-1180-1356-1711-1488-1074-1009-984-1270-1805-2040-993-997-964-1442-1101-1011-1006-507-107489188-95-114-523251360186-537-299-659-315160-238-689-782-1707-1885-2238-5650-575
Percentage of StockholdersEquity-3.9-3.6-3.9-3.4-4.7-5.5-7.0-6.6-4.8-4.5-4.4-5.8-8.5-9.6-4.5-4.5-4.5-6.8-5.1-4.7-4.8-2.4-0.52.30.9-0.5-0.6-2.61.21.70.9-2.7-1.5-3.4-1.60.8-1.2-3.9-4.5-10.6-12.2-15.4-44.2-5.1
Percentage of Assets-0.3-0.4-0.4-0.4-0.5-0.6-0.7-0.6-0.4-0.4-0.4-0.5-0.8-0.8-0.4-0.4-0.4-0.6-0.4-0.3-0.4-0.2-0.00.20.1-0.0-0.1-0.20.10.20.1-0.3-0.2-0.3-0.20.1-0.1-0.40.00.00.0-1.40.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-2-2-1-2-3-2-5-7-6-6-6-7-8-9-11-13-15-16-18-22-25-29-47
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2
Percentage of Assets-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
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value-1480-1072-1356-1035-1079-963-1113-1037-628-815-943-1248-1770-1875-1317-1351-1088-1394-1215-1070-1359-660229
Percentage of StockholdersEquity-6.2-4.4-5.4-4.1-4.3-3.9-4.5-4.6-2.8-3.7-4.2-5.7-8.3-8.8-5.9-6.1-5.1-6.6-5.7-5.0-6.5-3.11.1
Percentage of Assets-0.4-0.4-0.6-0.4-0.5-0.4-0.5-0.4-0.3-0.3-0.4-0.5-0.7-0.8-0.5-0.5-0.4-0.6-0.5-0.4-0.5-0.20.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value101551013210117101091008210061104189820979697999803980397969782977897679739974697429744974497919780976597379776975397139669966796349623954695579528947494169356931092669222918069924630
Percentage of StockholdersEquity42.641.540.139.740.340.642.443.543.743.943.644.446.046.144.144.245.346.245.345.346.845.646.245.045.848.047.748.446.346.346.448.447.449.348.547.849.152.653.057.759.863.354.741.0
Percentage of Assets2.84.14.14.24.44.14.54.03.94.14.24.14.14.03.83.84.04.03.93.33.53.63.63.53.84.04.54.34.44.34.74.85.14.44.65.05.55.80.00.00.05.80.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504502502502502495432398
Percentage of StockholdersEquity2.12.12.02.02.02.02.12.22.32.32.22.32.42.42.32.32.32.42.32.32.42.32.42.32.42.52.52.52.42.42.42.52.52.62.62.52.62.82.93.13.33.43.43.5
Percentage of Assets0.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.30.30.30.00.00.00.30.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value2471296236903690369036903690319631963196319631963196319631963196270327032703270319611961123312331233491490490489489488500500500500500500001883
Percentage of StockholdersEquity10.412.114.614.514.714.915.014.214.314.314.214.515.015.114.414.512.612.812.612.69.49.15.85.75.82.42.42.42.32.32.42.52.52.62.52.52.60.00.014.7
Percentage of Assets0.71.21.51.51.61.51.61.31.31.31.41.31.31.31.21.31.11.11.10.90.70.70.40.40.50.20.20.20.20.20.20.20.30.20.20.30.30.00.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value223152191821612212742091120606203871985619311188561867518202177621745917047166861623316049157951539015135148821453114114136391339512963125451209011751113921084610478101769889943090138634855680157588707191357745
Percentage of StockholdersEquity93.589.785.783.683.583.183.088.086.284.583.082.583.482.377.075.675.576.173.571.672.769.368.765.064.165.763.562.557.956.354.954.552.052.550.347.547.048.548.749.949.248.871.568.5
Percentage of Assets6.28.98.88.89.28.48.78.07.77.97.97.67.57.26.76.56.76.56.45.25.45.45.35.05.35.56.05.55.55.35.65.45.64.74.75.05.25.40.00.00.04.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-10664-10209-9729-9249-8969-8715-8735-9317-9334-9029-8697-8367-8159-7682-7382-7083-6719-6457-6143-5830-5519-5158-4785-4405-4028-3693-3166-2648-2134-1902-1455-1039-570-680-455-234-15-16-17-17-17-17-18-899
Percentage of StockholdersEquity-44.7-41.8-38.6-36.3-35.8-35.2-35.6-41.3-41.7-40.5-38.7-37.9-38.3-36.2-33.3-32.1-31.3-30.6-28.6-27.1-26.5-24.0-22.6-20.3-18.9-18.1-15.5-13.2-10.2-9.1-7.0-5.2-2.8-3.5-2.3-1.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-8.0
Percentage of Assets-2.9-4.2-4.0-3.8-3.9-3.6-3.7-3.8-3.7-3.8-3.7-3.5-3.4-3.2-2.9-2.8-2.8-2.6-2.5-2.0-2.0-1.9-1.7-1.6-1.6-1.5-1.5-1.2-1.0-0.9-0.7-0.5-0.3-0.3-0.2-0.1-0.0-0.00.00.00.0-0.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504504502495
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.20.20.30.30.30.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2231521918216122127420911206062038719856193111885618675182021776217459170471668616233160491579515390151351488214531141141363913395129631254512090117511139210846104781017698899430901386347071
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.28.98.88.89.28.48.78.07.77.97.97.67.57.26.76.56.76.56.45.25.45.45.35.05.35.56.05.55.55.35.65.45.64.74.75.05.25.44.5

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2231521918216122127420911206062038719856193111885618675182021776217459170471668616049
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.28.98.88.89.28.48.78.07.77.97.97.67.57.26.76.56.5
Percentage of Assets stt:BaselIIIAdvancedApproach0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2231521918216122127420911206062038719856193111885618675182021776217459170471668616049
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.28.98.88.89.28.48.78.07.77.97.97.67.57.26.76.56.5
Percentage of Assets stt:BaselIIIstandardizedApproach0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13936132181419414367142731426112312
Percentage of RetainedEarningsAccumulatedDeficit62.560.365.767.568.369.265.3
Percentage of Assets3.85.45.85.96.35.85.2
Percentage of Assets srt:Subsidiaries stt:BaselIIIAdvancedApproach0.00.00.00.00.00.00.0

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13936132181419414367142731426112312
Percentage of RetainedEarningsAccumulatedDeficit62.560.365.767.568.369.265.3
Percentage of Assets3.85.45.85.96.35.85.2
Percentage of Assets srt:Subsidiaries stt:BaselIIIstandardizedApproach0.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1066410209972992498969871587359317933490298697836781597682738270836719645761435830551951584785440540283693316626482134190214551039570680455234151617
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.94.24.03.83.93.63.73.83.73.83.73.53.43.22.92.82.82.62.52.02.01.91.71.61.61.51.51.21.00.90.70.50.30.30.20.10.00.00.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value-920-876-985-874-1180-1356-1711-1488-1074-1009-984-1270-1805-2040-993-997-964-1442-1101-1011-1006-507-107489188-95-114-523251360186-537-299-659-315160-238-689-2238-5650
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.3-0.4-0.4-0.4-0.5-0.6-0.7-0.6-0.4-0.4-0.4-0.5-0.8-0.8-0.4-0.4-0.4-0.6-0.4-0.3-0.4-0.2-0.00.20.1-0.0-0.1-0.20.10.20.1-0.3-0.2-0.3-0.20.1-0.1-0.4-1.40.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value403910534717415-49516335422-143448365076-2142490350914-2736216028523379-255-4924397403-1410-150119471131315-13481803
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues131.834.5162.514.4-16.954.7183.7-47.4160.2178.4-75.317.4131.50.6-104.483.9114.8134.0-9.7-188.415.215.3-54.6-57.878.44.654.3-57.178.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-112773-5523-5656-1311821671-15927131637241-8973-108315863180632109782-3266-103138027-479846630-15846-991-458510571-19964-14514811626323-55942921
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3679.4-181.2-194.8-456.6739.1-533.4446.1239.3-297.2-380.6206.064.3120.3386.6-124.7-400.8323.1-190.21780.5-606.2-38.0-174.3409.4-768.4-584.1333.31087.3-236.9127.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1103644174118011976-2030413746-18326-446745763923-2938-2049-5124-1197248199091-8351-1034-457992070518881891-112622383513224-6111-284486268-5268
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3600.8136.940.6416.8-692.5460.3-621.0-147.6151.6137.8-103.2-72.9-192.1-473.2183.9353.3-336.2-41.0-1748.7792.172.571.9-436.2917.4532.2-251.0-1175.1265.5-229.4

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value403910534717415-49516335422-143448365076-2142490350914-2736216028523379-255-4924397403-1410-150119471131315-13481803
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues131.834.5162.514.4-16.954.7183.7-47.4160.2178.4-75.317.4131.50.6-104.483.9114.8134.0-9.7-188.415.215.3-54.6-57.878.44.654.3-57.178.5

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value634564583587508439765734661370685620502593563619368564585422409492560622363540579464674490427555513471546432495
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues20.718.520.120.417.314.725.924.321.913.024.122.118.823.421.524.114.822.422.316.115.718.721.723.914.622.322.619.128.620.217.622.920.619.923.618.821.6

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5-524-9041210
Percentage of NetIncomeLoss0.8-0.90.30.7-1.80.00.51.61.5
Percentage of Revenues0.2-0.20.10.1-0.30.00.10.40.3
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value634583587508439764733661370685620502593563619368576581414409492560622363464427471495
Percentage of NetIncomeLoss100.0100.0100.0100.0100.099.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.0102.199.398.1100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues20.720.120.417.314.725.924.221.913.024.122.118.823.421.524.114.822.822.215.815.718.721.723.914.619.117.619.921.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-112773-5523-5656-1311821671-15927131637241-8973-108315863180632109782-3266-103138027-479846630-15846-991-458510571-19964-14514811626323-55942921
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-3679.4-181.2-194.8-456.6739.1-533.4446.1239.3-297.2-380.6206.064.3120.3386.6-124.7-400.8323.1-190.21780.5-606.2-38.0-174.3409.4-768.4-584.1333.31087.3-236.9127.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1141612271711711731511381471521601611641361491601681602422059612964124110119858925
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1103644174118011976-2030413746-18326-446745763923-2938-2049-5124-1197248199091-8351-1034-457992070518881891-112622383513224-6111-284486268-5268
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3600.8136.940.6416.8-692.5460.3-621.0-147.6151.6137.8-103.2-72.9-192.1-473.2183.9353.3-336.2-41.0-1748.7792.172.571.9-436.2917.4532.2-251.0-1175.1265.5-229.4

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302012-03-312011-03-31
Value249709950000014920-122995915-915994001986
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.0100.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.00.00.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2302392302272342202091892101911981782011821881691841661811521561431451311201109555
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2302392302272342202091892101911981782011821881691841661811521561431451311201109555
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value5154855003003000003503503502383543363144472685591783134704104104104203600
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Debt Instrument Interest Rate Stated Percentage

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

us-gaap:DebtInstrumentInterestRateStatedPercentage

stt:TwoPointFourZeroZeroPercentSeniorNotesDue2030, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-01-24
Value0.024
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations stt:TwoPointFourZeroZeroPercentSeniorNotesDue2030 us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

Effective Income Tax Rate Continuing Operations

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

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

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

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value1461491011041031089383839463636471666663635252163163155156163158116959595948787125235234271419359345
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value815858834876899
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value49323302359837424469359742793886254621071204
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

stt:AcquisitionAndRestructuringCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value112927129240001333371294342201046103652202833303014283721851719234113
Percentage of AcquisitionAndRestructuringCosts100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BankOperationsExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value91391011171422112719198
Percentage of BankOperationsExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ChangeInUnrealizedGainsLossesRelatedToFinancialInstruments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value3090-17801347-166463-282-8387512205-21312442-1244-23341910-9922505-2366-548395-266-563-2742195388-267-72-461605
Percentage of ChangeInUnrealizedGainsLossesRelatedToFinancialInstruments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value12-110-2-1-1-22-2-2-22-35000-40-30107940-4-7-163453-47-52-4761-30
Percentage of ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFinancialInstrumentsAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-09-302011-06-30
Value12-110-2-1-1-22-2-2-22-35000-40-30107940-4-7-31-163453-4761-30
Percentage of ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value12-110-2-1-1-22-2-2-22-35000-40-30107940-4-7-163453-47-52-4759-29
Percentage of ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.096.796.7

stt:DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value10001-11010101011010011011222533645653
Percentage of DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities100.00.00.00.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.0100.00.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:FeeRevenues



Period End2020-03-312019-03-31
Value23992260
Percentage of FeeRevenues100.0100.0

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

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentManagement



Period End2020-03-312019-03-31
Value452466
Percentage of FeeRevenues18.820.6

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentServicing



Period End2020-03-312019-03-31
Value19471794
Percentage of FeeRevenues81.279.4

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-03-31
Value452466
Percentage of FeeRevenues18.820.6

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-03-31
Value19471794
Percentage of FeeRevenues81.279.4

stt:FeesAndCommissionsForeignExchangeTradingServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value459274284273280294288315304
Percentage of FeesAndCommissionsForeignExchangeTradingServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, stt:ForeignExchangeTradingServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value253535333433333330
Percentage of FeesAndCommissionsForeignExchangeTradingServices5.412.812.312.112.111.211.510.59.9

us-gaap:OperatingSegments, stt:ForeignExchangeTradingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value434239249240246261255282274
Percentage of FeesAndCommissionsForeignExchangeTradingServices94.687.287.787.987.988.888.589.590.1

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value253535333433333330
Percentage of FeesAndCommissionsForeignExchangeTradingServices5.412.812.312.112.111.211.510.59.9

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value434239249240246261255282274
Percentage of FeesAndCommissionsForeignExchangeTradingServices94.687.287.787.987.988.888.589.590.1

stt:FeesAndCommissionsManagementFees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value449465445441420440474465472
Percentage of FeesAndCommissionsManagementFees100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, stt:ManagementServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value449465445441420440474465472
Percentage of FeesAndCommissionsManagementFees100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value449465445441420440474465472
Percentage of FeesAndCommissionsManagementFees100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:FeesAndCommissionsProcessingFeesAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11221914216819137958077
Percentage of FeesAndCommissionsProcessingFeesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, stt:ProcessingServicesandOther, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25112511-14820
Percentage of FeesAndCommissionsProcessingFeesAndOther-22.35.01.43.05.8-37.88.42.50.0

us-gaap:OperatingSegments, stt:ProcessingServicesandOther, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13720814016318051877877
Percentage of FeesAndCommissionsProcessingFeesAndOther122.395.098.697.094.2137.891.697.5100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25112511-14820
Percentage of FeesAndCommissionsProcessingFeesAndOther-22.35.01.43.05.8-37.88.42.50.0

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13720814016318051877877
Percentage of FeesAndCommissionsProcessingFeesAndOther122.395.098.697.094.2137.891.697.5100.0

stt:FeesAndCommissionsSecuritiesFinance



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value92111116126118120128154141
Percentage of FeesAndCommissionsSecuritiesFinance100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, stt:SecuritiesFinancingServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value322410000
Percentage of FeesAndCommissionsSecuritiesFinance3.31.81.73.20.80.00.00.00.0

us-gaap:OperatingSegments, stt:SecuritiesFinancingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value89109114122117120128154141
Percentage of FeesAndCommissionsSecuritiesFinance96.798.298.396.899.2100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value322410000
Percentage of FeesAndCommissionsSecuritiesFinance3.31.81.73.20.80.00.00.00.0

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value89109114122117120128154141
Percentage of FeesAndCommissionsSecuritiesFinance96.798.298.396.899.2100.0100.0100.0100.0

stt:FeesAndCommissionsServicingFees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value128712991272125212511286133313811421
Percentage of FeesAndCommissionsServicingFees100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000-8000
Percentage of FeesAndCommissionsServicingFees0.00.00.00.00.0-0.60.00.00.0

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

us-gaap:OperatingSegments, stt:AccountServicing, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value128712991272125212511294133313811421
Percentage of FeesAndCommissionsServicingFees100.0100.0100.0100.0100.0100.6100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value128712991272125212511294133313811421
Percentage of FeesAndCommissionsServicingFees100.0100.0100.0100.0100.0100.6100.0100.0100.0

stt:InterestEarningAssetsOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value466510711410997971037776674434221810134223222112101101011
Percentage of InterestEarningAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0

stt:InterestExpenseInvestmentSecuritiesPurchasedUnderMoneyMarketFacility



Period End2020-03-312019-03-31
Value60
Percentage of InterestExpenseInvestmentSecuritiesPurchasedUnderMoneyMarketFacility100.00.0

stt:InterestIncomeFromOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value117131126126122126136140159163173164160176208189183201227247259284320318319323339341374406405374364355551517550
Percentage of InterestIncomeFromOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:InterestIncomeInvestmentSecuritiesPurchasedUnderMoneyMarketFacility



Period End2020-03-312019-03-31
Value80
Percentage of InterestIncomeInvestmentSecuritiesPurchasedUnderMoneyMarketFacility100.00.0

stt:NetIncreaseDecreaseInFederalFundsSoldAndSecuritiesPurchasedUnderResaleAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value4501554-1309-2103157-484-6121553-1895224-293-991-225486-4321712-3185751-47086884-894121310782406143-3687-850675473
Percentage of NetIncreaseDecreaseInFederalFundsSoldAndSecuritiesPurchasedUnderResaleAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:NetIncreaseinShortTermBorrowingsUnderMoneyMarketLiquidityFacility



Period End2020-03-312019-03-31
Value256650
Percentage of NetIncreaseinShortTermBorrowingsUnderMoneyMarketLiquidityFacility100.00.0

stt:NoncashAdjustmentsForDepreciationAmortizationAccretion



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value274305281271244248240241248235221203212205155179183162151148135126123129991079110
Percentage of NoncashAdjustmentsForDepreciationAmortizationAccretion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherComprehensiveIncomeLossChangeInNetUnrealizedGainLossOnAfsSecuritiesNetOfReclassAndExpectedLossFromOttiRelatedTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value35-515310210868-66-20-116-6428177131-466-11187171-14727-198123-530-9419316276-50729326421037519548
Percentage of OtherComprehensiveIncomeLossChangeInNetUnrealizedGainLossOnAfsSecuritiesNetOfReclassAndExpectedLossFromOttiRelatedTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherComprehensiveIncomeLossChangeInUnrealizedGainLossOnAfsSecuritiesDesignatedAsFairValueHedgesRelatedTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value-3232-1-1-1212174052293-1210-1015-10-1010-9-60319-1-1121-69-410
Percentage of OtherComprehensiveIncomeLossChangeInUnrealizedGainLossOnAfsSecuritiesDesignatedAsFairValueHedgesRelatedTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value276-51714572450127-144
Percentage of OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value734556578
Percentage of OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditRelatedTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value0000-1-21121101211122132235134411062
Percentage of OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditRelatedTaxes0.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

stt:OtherComprehensiveIncomeLossMinimumPensionLiabilityNetAdjustmentTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value4-300-4320360-13-1-112473-34-483-83642-701
Percentage of OtherComprehensiveIncomeLossMinimumPensionLiabilityNetAdjustmentTax100.0100.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

stt:OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct



Period End2020-03-312019-03-31
Value-44176
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct100.0100.0

us-gaap:StatementEquityComponents

stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging



Period End2020-03-312019-03-31
Value10820
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct-245.511.4

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-03-31
Value12-36
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct-27.3-20.5

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-03-31
Value11718
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct-265.910.2

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-03-31
Value127291
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct-288.6165.3

us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-03-31
Value0.0-1000000.0
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct-0.0-0.6

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-03-31
Value-408-116
Percentage of OtherComprehensiveIncomeLossNetofTaxPortionAttributabletoParentIncludingTaxEffectsOfTaxCutsAndJobsAct927.3-65.9

stt:OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-75105-2-56518
Percentage of OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:OtherInterestEarningLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value305170646155525251303733211820191812101679819768544323111
Percentage of OtherInterestEarningLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:PreTaxMargin



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.25-0.0099999999999999810.250.250.22-0.0300000000000000270.290.290.250.00.290.280.22-0.0200000000000000180.240.280.170.0100000000000000090.250.180.19-0.0100000000000000090.270.290.180.290.30.250.40.270.24
Percentage of PreTaxMargin100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.150.0200000000000000180.220.20.12-0.0100000000000000090.240.220.20.00.280.250.19-0.080.170.190.11-0.019999999999999990.290.19
Percentage of PreTaxMargin60.0-200.088.080.054.533.382.875.980.00.096.689.386.4400.070.867.964.7-200.0116.0105.6

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.270.0100000000000000090.270.260.240.00.310.330.260.0099999999999999530.30.310.24-0.0200000000000000180.270.290.230.019999999999999990.280.18
Percentage of PreTaxMargin108.0-100.0108.0104.0109.1-0.0106.9113.8104.00.0103.4110.7109.1100.0112.5103.6135.3200.0112.0100.0

us-gaap:StatementClassOfStock, us-gaap:VariableRate

stt:PreferredStockDividendPaymentRateBasisSpreadOnVariableRate

us-gaap:SeriesDPreferredStock, us-gaap:LondonInterbankOfferedRateLIBOR



Period End2020-03-31
Value0.03108
Percentage of PreferredStockDividendPaymentRateBasisSpreadOnVariableRate100.0

us-gaap:SeriesFPreferredStock, us-gaap:LondonInterbankOfferedRateLIBOR



Period End2020-03-31
Value0.03597
Percentage of PreferredStockDividendPaymentRateBasisSpreadOnVariableRate115.7

us-gaap:SeriesGPreferredStock, us-gaap:LondonInterbankOfferedRateLIBOR



Period End2020-03-31
Value0.03709
Percentage of PreferredStockDividendPaymentRateBasisSpreadOnVariableRate119.3

us-gaap:SeriesHPreferredStock, us-gaap:LondonInterbankOfferedRateLIBOR



Period End2020-03-31
Value0.02539
Percentage of PreferredStockDividendPaymentRateBasisSpreadOnVariableRate81.7

stt:ProceedsFromUnderMoneyMarketLiquidityFacility



Period End2020-03-312019-03-31
Value4510
Percentage of ProceedsFromUnderMoneyMarketLiquidityFacility100.00.0

stt:PurchasesUnderMoneyMarketLiquidityFacility



Period End2020-03-312019-03-31
Value260610
Percentage of PurchasesUnderMoneyMarketLiquidityFacility100.00.0

stt:RegulatoryFeesandAssessments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121918161816152927292418271728182025312534
Percentage of RegulatoryFeesandAssessments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RepurchasesOfCommonStockForEmployeeTaxWithholding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value4315101343237-20320702525215527231854333836115353126140112-69-57-39
Percentage of RepurchasesOfCommonStockForEmployeeTaxWithholding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

stt:RevenuefromOtherThanContractwithCustomer

us-gaap:OperatingSegments, stt:ForeignExchangeTradingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value334151159158160175166191179
Percentage of RevenuefromOtherThanContractwithCustomer100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, stt:InterestIncomeNet, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1-3-5-10-6-3-8-4-5
Percentage of RevenuefromOtherThanContractwithCustomer0.3-2.0-3.1-6.3-3.8-1.7-4.8-2.1-2.8

us-gaap:OperatingSegments, stt:InterestIncomeNet, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value663639649623679700680663648
Percentage of RevenuefromOtherThanContractwithCustomer198.5423.2408.2394.3424.4400.0409.6347.1362.0

us-gaap:OperatingSegments, stt:ProcessingServicesandOther, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25112511-14820
Percentage of RevenuefromOtherThanContractwithCustomer-7.57.31.33.26.9-8.04.81.00.0

us-gaap:OperatingSegments, stt:ProcessingServicesandOther, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3069435964-89605558
Percentage of RevenuefromOtherThanContractwithCustomer9.045.727.037.340.0-50.936.128.832.4

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-22134912-14820
Percentage of RevenuefromOtherThanContractwithCustomer-6.68.62.55.77.5-8.04.81.00.0

us-gaap:OperatingSegments, stt:RevenueFromFees, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value396279252264271138281310301
Percentage of RevenuefromOtherThanContractwithCustomer118.6184.8158.5167.1169.478.9169.3162.3168.2

us-gaap:OperatingSegments, stt:SecuritiesFinancingServices, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value322410000
Percentage of RevenuefromOtherThanContractwithCustomer0.91.31.32.50.60.00.00.00.0

us-gaap:OperatingSegments, stt:SecuritiesFinancingServices, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value325950474752556464
Percentage of RevenuefromOtherThanContractwithCustomer9.639.131.429.729.429.733.133.535.8

us-gaap:OperatingSegments, stt:TotalOtherIncome, stt:InvestmentServicing



Period End2020-03-312019-03-31
Value2-1
Percentage of RevenuefromOtherThanContractwithCustomer0.6-0.6

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2110-1-16-170-2-5
Percentage of RevenuefromOtherThanContractwithCustomer-6.36.6-0.6-0.63.8-9.70.0-1.0-2.8

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1061962901887949838960982947
Percentage of RevenuefromOtherThanContractwithCustomer317.7637.1566.7561.4593.1478.9578.3514.1529.1

stt:SecuritiesProcessingExpense



Period End2020-03-312019-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value159-104982210644401420
Percentage of SecuritiesProcessingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:StockOptionsAndStockAwards



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value4033304450555044405660778988775343233
Percentage of StockOptionsAndStockAwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:AllowanceForLoanAndLeaseLossesAdjustmentsNet

stt:CommercialAndFinancial, stt:IndividuallyEvaluatedforImpairment



Period End2020-03-312019-03-31
Value21
Percentage of AllowanceForLoanAndLeaseLossesAdjustmentsNet100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value58585959608147485054545452545549495048495060545454535453464851505049524634
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value77787878788879822422223222232
Percentage of AmortizationOfIntangibleAssets12.112.111.913.611.79.914.916.714.014.814.814.813.516.714.54.14.18.04.24.14.03.35.63.73.73.83.96.15.9

stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value5151525153734040434646464545474747464647485851525251494632
Percentage of AmortizationOfIntangibleAssets87.987.988.186.488.390.185.183.386.085.285.285.286.583.385.595.995.992.095.895.996.096.794.496.396.396.296.193.994.1

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value0331110000233000011122551311121410
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationAcquisitionRelatedCosts

stt:CharlesRiverDevelopment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value112927101331
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1630-296241-727872-10674961340439
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value536-9476177103162-12-66889
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByAssetClass, us-gaap:IncomeStatementLocation

us-gaap:InterestRateContract, us-gaap:AvailableforsaleSecurities, stt:InterestIncomeNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1161-8106-991021
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1-2.1-6.41.3-4.5102.9-5.6-75.0-1.523.6

us-gaap:InterestRateContract, us-gaap:LongTermDebt, stt:InterestIncomeNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value547-10075185-3196-40-47-167
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1102.1106.498.7104.5-2.9121.0333.37.0-187.6

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-52595-74-176-98-15912666-100
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByAssetClass, us-gaap:IncomeStatementLocation

us-gaap:InterestRateContract, us-gaap:AvailableforsaleSecurities, stt:InterestIncomeNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10-7-27-1026-8-9-21
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1-1.9-7.42.7-4.0104.1-3.8-66.7-1.421.0

us-gaap:InterestRateContract, us-gaap:LongTermDebt, stt:InterestIncomeNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-535102-72-1834-1903944156
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1101.9107.497.3104.0-4.1119.5325.06.6-156.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value0.520.520.520.470.470.470.470.420.420.420000000000000150.420.380.380.37999999999999990.380.340.340.34000000000000010.340.340.30.299999999999999930.30.30.260.260.260.260.240.240.240.180.180.180.010.010.01
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommunicationsAndInformationTechnology



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value385362376365362356332321315301296283287278285270272261265249247246242244244235235237211208191191199191181174167
Percentage of CommunicationsAndInformationTechnology100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2-1000109-1
Percentage of DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment100.0100.00.00.00.0100.00.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10000107-1
Percentage of DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment50.0-0.00.00.00.0100.00.077.8100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value8-145-4191-35-47-5-58-35312-161-53-3-38963-9-23-156-6452096-36127577810109
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, stt:ForeignExchangeTradingServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value333154160156160174170195184
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2-18-37-59-39-23-30-1500
Percentage of DerivativeGainLossOnDerivativeNet0.6-11.7-23.1-37.8-24.4-13.2-1.80.0-8.20.00.0

us-gaap:InterestRateContract, us-gaap:Nondesignated, stt:ForeignExchangeTradingServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3-1-10-10-2-2-2
Percentage of DerivativeGainLossOnDerivativeNet0.9-0.6-0.60.0-0.60.0-1.2-1.0-1.1

us-gaap:OtherContract, us-gaap:Nondesignated, stt:CompensationandEmployeeBenefits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-67-39-46-46-74-31-34-42-65
Percentage of DerivativeGainLossOnDerivativeNet-20.1-25.3-28.8-29.5-46.2-17.8-20.0-21.5-35.3

us-gaap:HedgingDesignation

us-gaap:Nondesignated



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2719676514612213315010311311614998-264161155154145176165207170165143133124148171146
Percentage of DerivativeGainLossOnDerivativeNet81.462.347.532.728.870.178.276.956.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value183187189175177179179153154154156142144145147133135135138139124124126128112118118925
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-03-312012-09-302012-03-312011-03-312010-03-31
Value183189175177179179153154154156142144145146133135135138139124124126128112115118113118925
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0

us-gaap:DividendsPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value53725550554255365536553655365533492842293118181967671577670
Percentage of DividendsPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DividendsPreferredStockCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value445055505542553655365536553655334929412931181819677
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:SeriesCPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value6767676767676766767766776676
Percentage of DividendsPreferredStockCash13.614.010.914.010.916.710.919.410.919.410.919.410.919.410.918.214.320.717.124.119.433.338.936.8100.00.00.00.0

us-gaap:SeriesDPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value111111111111111111111111111111111111111111121112
Percentage of DividendsPreferredStockCash25.022.020.022.020.026.220.030.620.030.620.030.620.030.620.033.322.437.926.837.935.566.761.163.2

us-gaap:SeriesEPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value01211111112111111121111111211111112111114
Percentage of DividendsPreferredStockCash0.024.020.022.020.028.620.030.620.033.320.030.620.033.320.033.322.441.426.837.945.2

us-gaap:SeriesFPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2002002002002002002002002001200
Percentage of DividendsPreferredStockCash45.50.036.40.036.40.036.40.036.40.036.40.036.40.036.40.040.80.029.30.00.0

us-gaap:SeriesGPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value76777677767776750000
Percentage of DividendsPreferredStockCash15.912.012.714.012.714.312.719.412.716.712.719.412.716.712.715.20.00.00.00.0

us-gaap:SeriesHPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value01401406000
Percentage of DividendsPreferredStockCash0.028.00.028.00.014.30.00.00.0

us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

us-gaap:SeriesCPreferredStock, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-312016-01-312015-01-31
Value66676666677
Percentage of DividendsPreferredStockCash0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value445550553345536-55365536553655334929412931181819677
Percentage of DividendsPreferredStockCash100.0100.0100.0100.0795.2100.0100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value11-12-1-3-21-14-1013-68131010717-83144316497-748110112371
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFinancialInstrumentsAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-31
Value11-12-1-3-30-23-2-101-76003-1-5-961311044-6-11-16-213195-75
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0150.00.0200.075.0200.00.00.033.3116.775.00.00.030.0-14.3-29.4115.791.032.368.8-66.7-157.10.0300.064.686.4-105.6

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value11-12-1-3-30-23-2-101-76003-1-5-961311044-6-11-213195-69-77-65
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0150.00.0200.075.0200.00.00.033.3116.775.00.00.030.0-14.3-29.4115.791.032.368.8-66.7-157.1300.064.686.4-61.6-2566.7-91.5

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.00.01000000.01000000.01000000.01000000.01000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-0.0-0.0-50.0100.0-100.025.0-100.0

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.00.00.00.00.00.00.00.00.00.01000000.00.00.00.00.00.01000000.00.00.01000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-0.0-0.0-0.00.0-0.00.0-0.00.00.033.3-0.00.00.00.00.014.30.0-0.00.7

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.00.00.00.00.00.00.00.00.00.01000000.00.00.00.00.00.01000000.00.00.01000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-0.0-0.0-0.00.0-0.00.0-0.00.00.033.3-0.00.00.00.00.014.30.0-0.00.7

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00001111111112131077221312
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-0.0-0.0-50.0100.0-100.025.0-100.00.0100.033.3-16.725.0100.0100.070.0100.0129.4-15.78.3

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00001111111212131078221313
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-0.0-0.0-50.0100.0-100.025.0-100.00.0100.066.7-16.725.0100.0100.070.0114.3129.4-15.79.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-14920-295-4-3-4-2-111-22024-16-17-26-7-11-16-104-5-1583225-315
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-83002-2-2-2-2-1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss55.70.0-0.040.050.066.750.0100.0100.0

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-6620-293-2-1-20000-10102-2-1-201
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss44.3100.0100.060.050.033.350.0-0.0-0.00.00.050.00.00.00.050.012.55.97.7-0.0-9.1

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-6519-273-2-1-20010-1010000-100
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss43.695.093.160.050.033.350.0-0.0-0.0100.00.050.00.00.00.00.0-0.0-0.03.8-0.0-0.0

stt:NonUsDebtSecuritiesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-11-20000001000002-2-1-101
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss0.75.06.90.0-0.0-0.0-0.0-0.0-0.0100.00.0-0.00.00.00.050.012.55.93.8-0.0-9.1

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-83002-2-2-2-2-101-12-1-61-14-15-22-6-11
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss55.70.0-0.040.050.066.750.0100.0100.00.0100.050.0100.00.0-300.025.087.588.284.685.7100.0

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-14920-295-4-3-4-2-111-22024-16-17-26-7-11
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value18163010467014487792734329324092202192245537254574169104834326146693116381246310321691147124161876
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFinancialInstrumentsAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-09-302011-06-30
Value325103234402253000-811036422117-57125311017796
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases1.70.34.81.52.12.33.81.50.90.00.50.92.31.30.00.00.0-10.80.6100.07.50.93.616.77.50.00.61.511.47.57.35.1

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value325103234402253000-811036422117712537515711017396
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases1.70.34.81.52.12.33.81.50.90.00.50.92.31.30.00.00.0-10.80.6100.07.50.93.616.77.50.61.511.47.39.37.57.25.1

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value178445334551323200318
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases98.370.631.767.991.736.80.00.073.6

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0183668295376269110311147036-13745382811680154
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.029.063.512.26.260.996.298.525.533.435.90.016.4-0.467.673.615.0109.599.40.031.9

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value01836682940762691103102903109053538116800
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.029.063.512.26.246.096.298.525.533.37.10.014.20.016.373.69.7109.599.40.00.0

stt:NonUsDebtSecuritiesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00000130000005-1194029000111
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.00.00.00.00.014.90.00.00.00.00.00.02.3-0.435.10.05.30.00.00.023.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value178445334551323200318620260199155219118191130000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases98.370.631.767.991.736.80.00.073.666.563.690.570.897.821.326.420.70.00.00.00.0

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value17862899660141857626942893240721821422155372545821680447
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases98.399.795.298.597.997.796.298.599.1100.099.599.197.798.7100.0100.0100.0110.899.40.092.5

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value42000059-137946260900-1686508174072403645072412
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFinancialInstrumentsAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-09-302011-06-30
Value00000000000000000000000-112
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.00.00.00.0-0.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.0-1.42.4100.0

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-03-312011-06-30
Value0000000000000000000000002
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.00.00.00.0-0.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.0100.0

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value420000000636
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.00.00.00.00.00.0-0.00.067.2

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-30
Value0000059-103101900000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.00.00.0100.0100.00.032.80.4100.00.0-0.00.00.0

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-30
Value000000-103100100000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.00.00.00.0100.00.032.80.011.10.0-0.00.00.0

stt:NonUsDebtSecuritiesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-30
Value00000590001800000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.00.00.0100.0-0.00.00.00.488.90.0-0.00.00.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-30
Value42000000063624000-1686420
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.00.00.00.00.00.0-0.00.067.292.30.00.0100.0100.082.7

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312015-12-312015-09-302015-06-30
Value42000059-137946260900-1686508
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value351069810970542495330195011929554256916691233443366358255551340366349605557565487347184402
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFinancialInstrumentsAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-09-302011-06-30
Value1010006300504100873539631819373094898711782
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements2.90.01.00.00.00.02.45.70.00.00.00.01.40.20.00.08.83.07.910.717.60.41.50.32.50.08.615.516.025.163.620.4

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value101000630050410087353963181930948967478611782
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements2.90.01.00.00.00.02.45.70.00.00.00.01.40.20.00.08.83.07.910.717.60.41.50.32.58.615.516.011.99.724.863.620.4

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3270971195649239-265
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements91.466.099.0109.280.090.796.0-49.116.7

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2360-1012-147624-15-7-2133623528839109
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements5.734.00.0-9.217.1-1.91.6143.480.0-7.70.0-1.70.36.11.113.95.512.018.72.530.4

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2360-911-1367-2-100164179161821831868
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements5.734.00.0-8.315.7-1.91.2126.4-6.7-5.10.013.41.43.11.69.619.89.018.74.919.0

stt:NonUsDebtSecuritiesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000-1101926-3-7-18-316-37-1370-941
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements0.00.00.0-0.91.40.00.417.086.7-1.50.0-15.1-1.03.0-0.54.2-14.33.00.0-2.511.5

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3270971195649239-265208212029050556012960173308288150
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements91.466.099.0109.280.090.796.0-49.116.7106.70.0100.898.393.298.477.765.974.269.578.741.9

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value341069710970542435030195-511929154156916683226408327295
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements97.1100.099.0100.0100.0100.097.694.3100.0100.00.0100.098.699.8100.0100.091.297.092.189.382.4

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value0572302160054068421515201409708576001513902195210114
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.0100.0100.00.00.0100.00.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value05723021600000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.0100.0100.00.00.00.00.00.0

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-12-312015-09-302015-06-30
Value00000046068015514097
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.00.00.00.00.00.085.20.0100.00.07.033.628.60.0100.0

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-12-312015-09-302015-06-30
Value0000004606801551400
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.00.00.00.00.00.085.20.0100.00.07.033.628.60.00.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-12-312015-09-302015-06-30
Value05723021600000-1175101000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.0100.0100.00.00.00.00.00.0-25.081.466.40.00.00.0

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-12-312015-09-302015-06-30
Value0572302160054068421515214097
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.0100.0100.00.00.0100.00.0100.0100.0100.0100.0100.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value001620120640333241-11695405435782303146458349372332521217297764249931188303010581220
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

stt:AssetbackedSecuritiesCollateralizedLoanObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value00000000209
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.00.00.00.00.00.00.062.8

stt:NonUSDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0039012064011916031373548282168972470
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.024.10.0100.00.0100.00.035.76.6-0.018.369.1100.023.0100.055.466.453.90.0

stt:NonUsDebtSecuritiesAssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value003900000016031905453821680170
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.024.10.00.00.00.00.00.06.6-0.018.316.7100.014.8100.055.40.03.70.0

stt:NonUsDebtSecuritiesOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000012064000001930290001870
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.00.00.0100.00.0100.00.00.00.0-0.00.035.70.08.10.00.00.040.80.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value00000000209200-19996000400220
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.00.00.00.00.00.00.062.883.0100.058.617.80.00.00.013.20.04.80.0

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value001620120640333241-11695405435782303146458349
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ClassOfFinancingReceivableTypeOfBorrower

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

stt:AllOther



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

stt:IncludesAllowancesonUnfundedCommitments



Period End2020-03-31
Value5
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

stt:InstitutionalOtherLoans



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

stt:OffBalanceSheetCommitments



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

us-gaap:CommercialBorrower



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

us-gaap:FinancialInstitutionsBorrower



Period End2020-03-31
Value5
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

us-gaap:HeldtomaturitySecurities



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0

us-gaap:FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-911-196-8-8-2-3015919377
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.00.00.00.00.00.00.00.00.01000000.00.01000000.0-1000000.0
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss-0.00.0-0.00.0-0.0-0.0-0.0-0.00.011.10.02.7-14.3

stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-911-196-8-8-2-3015819368
Percentage of FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.088.9100.097.3114.3

us-gaap:FloorBrokerageExchangeAndClearanceFees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value254242254245242214236246242219215207197199200201200194201201197201199193191185186180170172181180193180165164153
Percentage of FloorBrokerageExchangeAndClearanceFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GeneralInsuranceExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5-27172218153232342728301931212228332837
Percentage of GeneralInsuranceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillTranslationAndPurchaseAccountingAdjustments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-5056-6515-18-29-10-954625589522-974-5162-45-1366-163-73-138-12-655592-35
Percentage of GoodwillTranslationAndPurchaseAccountingAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value-33-200-1-1-311230-20-11-101-3-1-300-110
Percentage of GoodwillTranslationAndPurchaseAccountingAdjustments6.05.43.10.0-0.03.410.03.22.24.03.43.20.02.10.02.01.62.2-0.01.51.81.42.2-0.00.01.51.80.0

stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-4753-6315-18-28-9-924524569222-954-5061-44-1365-160-72-135-12-645492-35
Percentage of GoodwillTranslationAndPurchaseAccountingAdjustments94.094.696.9100.0100.096.690.096.897.896.096.696.8100.097.9100.098.098.497.8100.098.598.298.697.8100.0100.098.598.2100.0100.0

us-gaap:ImpairmentOfInvestments



Period End2020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1-111111-111111110001002910736138103511745397
Percentage of ImpairmentOfInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value774638721718635504867865763717822776584345636709430664652478504569688746455703762609941652586629715660782350702
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-11-279-45-12-23-3210-770-132-34-71-29-42-33-17-107-5-85-3
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-1.4-43.7-6.2-1.7-3.6-63.70.0-8.90.0-18.4-4.1-9.1-5.0-12.2-5.2-2.4-24.9-0.8-13.0-0.6

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value681311069654851211079910212310178-45645832388259
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments8.820.514.713.48.516.914.012.413.014.215.013.013.4-13.010.18.27.45.712.612.3

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value717786660634604740746835664747733746535432605668505647650416
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments92.6123.291.588.395.1146.886.096.587.0104.289.296.191.6125.295.194.2117.497.499.787.0

us-gaap:StatementGeographical

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value489390377405386183370438368406480452322133322365254433392121157
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments63.261.152.356.460.836.342.750.648.256.658.458.255.138.650.651.559.165.260.125.331.2

us-gaap:NonUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value285248344313249321497427395311342324262212314344176247255351342
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments36.838.947.743.639.263.757.349.451.843.441.641.844.961.449.448.540.937.239.173.467.9

us-gaap:IncreaseDecreaseInCashCollateralForLoanedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2685713927-2184-1527904077-285260113051-185-979-68597-32273388-7761415-533-4345-3199-829-1117-1997-419-321-195-1981783
Percentage of IncreaseDecreaseInCashCollateralForLoanedSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherDeposits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value565961089964067475-120137095-17344-937084104150-243092252095-110147083181-92029205-37265159894536-47066-72911326113464812-2138713730-1696
Percentage of IncreaseDecreaseInOtherDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value891434-791338732-324-212-717993-7222761811606-2229150-567874-467-6671498-1528-2049-2038509-34-639-929-147
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value4179-1177364131976-353-6292881091-1724379-5541908-1546-944501293-164-1207341982-2099-7105981542-8461561197
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value43-2756-7574-123110-9784562381154650195282575-11410439-76972474133144117
Percentage of IncreaseDecreaseInOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInTimeDeposits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1863586-6113648-58765067-11214516-17891484277-11274-5793-589-144774373087-3945-69593250-222448138-357510925-1084-10218-5720-46611970
Percentage of IncreaseDecreaseInTimeDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInTradingSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-4275-5538-4-141-159-1885-42239-49-79-391731724-374-150228221-10992524617661353-1
Percentage of IncreaseDecreaseInTradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseInCarryingAmountOfRedeemablePreferredStock



Period End2020-03-31
Value500
Percentage of IncreaseInCarryingAmountOfRedeemablePreferredStock100.0

us-gaap:StatementEquityComponents

us-gaap:PreferredStock



Period End2020-03-31
Value491
Percentage of IncreaseInCarryingAmountOfRedeemablePreferredStock98.2

us-gaap:RetainedEarnings



Period End2020-03-31
Value9
Percentage of IncreaseInCarryingAmountOfRedeemablePreferredStock1.8

us-gaap:InterestAndDividendIncomeOperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value868906100110071027982916907857
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansAndLeases



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1841821941951981891731691551421391181059797939182797774836461585879565771556867806974111
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value6811017320917112784894867391444122016383028142633331815172734373753524458624633
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value2478122460010000000
Percentage of InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.00.00.00.0

us-gaap:InterestExpenseShortTermBorrowings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value103864544333323220213110-12151515161819182324274670111
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDepositsWithFinancialInstitutions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value81909810911912094908259454134252930434753545458535134293131313542392827222219
Percentage of InterestIncomeDepositsWithFinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value664636644613673697672659658616603575510514537521512494513535546574570561555546596576619672625578572577724658661
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, stt:InterestIncomeNet, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1-3-5-10-6-3-8-4-5
Percentage of InterestIncomeExpenseNet0.2-0.5-0.8-1.6-0.9-0.4-1.2-0.6-0.8

us-gaap:OperatingSegments, stt:InterestIncomeNet, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value663639649623679700680663648
Percentage of InterestIncomeExpenseNet99.8100.5100.8101.6100.9100.4101.2100.698.5

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1-3-5-10-6-3-8-4-5-2-3-1101111-11
Percentage of InterestIncomeExpenseNet0.2-0.5-0.8-1.6-0.9-0.4-1.2-0.6-0.8-0.3-0.5-0.20.20.00.20.20.20.2-0.20.2

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value663639649623679700680663663618606576509514536520511493514534
Percentage of InterestIncomeExpenseNet99.8100.5100.8101.6100.9100.4101.2100.6100.8100.3100.5100.299.8100.099.899.899.899.8100.299.8

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-8234-15445
Percentage of InterestIncomeExpenseNet-1.20.30.50.7-2.20.60.60.8

us-gaap:InterestIncomeOperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value868906100110071027982916907857797761700650616647620629603614629642676671650655643700687730786765728719734904846878
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesPurchasedUnderAgreementsToResell



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value657510190988987817775746946344035361718151111910981213151396610764
Percentage of InterestIncomeSecuritiesPurchasedUnderAgreementsToResell100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesStateAndMunicipal



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value11121213121829445255565659625554525457585858584471595451535454555556565654
Percentage of InterestIncomeSecuritiesStateAndMunicipal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value356351363360369343300280255227207208212201200209211198178176183179165164163165183194200206199186198206198170139
Percentage of InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1208114510831084122913031103112512491067109010711166124410139891107939105198410879729539781157903917103591694210649651009974857849883
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12-7-10-8131112
Percentage of LaborAndRelatedExpense1.0-0.6-0.10.0-0.71.00.10.11.0

us-gaap:MarketingAndAdvertisingExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value183129272731292926251415
Percentage of MarketingAndAdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2255240721802154229324742079215922562131202120312086218319841860205018571962213420972057189218502028172217981826141517721835179817741702152719441579
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1127945122331307701323471294233171075853
Percentage of NoninterestExpense0.511.62.10.61.012.70.03.60.06.21.73.51.41.91.70.95.20.34.30.1

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value385379373377406371386389398332314311329401317244256251204251
Percentage of NoninterestExpense17.115.717.117.517.715.018.618.017.615.615.515.315.818.416.013.112.513.510.411.8

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value18591749176217651864179016931693185816671673164917281740163415991687160116731880
Percentage of NoninterestExpense82.472.780.881.981.372.481.478.482.478.282.881.282.879.782.486.082.386.285.388.1

us-gaap:NoninterestIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2236822592260226022892280235823632230224222352198
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value00000-80000000
Percentage of NoninterestIncome0.00.00.00.00.0-0.30.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, stt:TotalOtherIncome, stt:InvestmentServicing



Period End2020-03-312019-03-31
Value2-1
Percentage of NoninterestIncome100.0-0.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentManagement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0513484483466459515500502436440413406
Percentage of NoninterestIncome0.021.721.421.420.620.122.621.221.219.619.618.518.5

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2185517751777179418381765185818611794180218221792
Percentage of NoninterestIncome100.078.378.678.679.480.377.478.878.880.480.481.581.5

us-gaap:NoninterestIncomeOther



Period End2020-03-312019-03-31
Value0.0-1000000.0
Percentage of NoninterestIncomeOther0.0100.0

us-gaap:NumberOfReportableSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2.00.00.00.02.00.00.02.0
Percentage of NumberOfReportableSegments100.00.00.00.0100.00.00.0100.0

us-gaap:OccupancyNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value109126113115116146110124120117118116110109107111113112110109113113119115114113114116115115119119113107112116118
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-06-302016-03-312015-06-302015-03-31
Value-49114-113299269355-227-432-75253-32474-13-504
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

stt:AccumulatedNetUnrealizedGainLossOnNetInvestmentHedging



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value108-4557-223271971-36-13-46-87-145445100000
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-220.4-39.5-50.4-0.78.67.6-8.4-16.448.00.00.00.0-5.50.00.0-159.40.00.00.0-0.0-0.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000000-1-242501-1004-1-31000
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-0.00.0-0.00.00.00.00.45.6-33.30.00.00.00.00.00.03.1-0.60.00.0-0.0-0.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value125-94-2139-1026
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-255.1-7.9-3.5-7.014.5-2.8-11.5

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value126-115146262270167-198-124-130-14350274231-684-2284238-20222-313179
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-257.1-100.9-129.287.6100.447.087.228.7173.30.00.00.091.30.00.0-887.550.20.00.02407.7-35.5

us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0-11112301011122313435
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-0.0-0.9-0.90.30.40.6-1.3-0.0-1.30.00.00.00.40.00.0-9.40.20.00.0-23.1-1.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-408284-32144-49150-76-409187127305522105-55534-263306-179-145289-699
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent832.7249.1284.114.7-18.242.333.594.7-249.30.00.00.041.50.00.0821.964.60.00.0-2223.1138.7

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000000-2-11-1016-1-20-1
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.00.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value117-77124-63040-97
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value44-3309-2-59-19
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value168-614637-33156-108
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value101912-1527-263864-88
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax6.0-316.785.7-250.073.0866.7122.6114.381.5

us-gaap:InterestRateContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value158-252211023-7-8-20
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax94.0416.714.3350.027.0-766.7-22.6-14.318.5

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value734556578
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:ForeignExchangeContract, us-gaap:InterestIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value767777677
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax100.0200.0175.0140.0140.0116.7120.0100.087.5

us-gaap:InterestRateContract, us-gaap:InterestIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-3-3-2-2-1-101
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax0.0-100.0-75.0-40.0-40.0-16.7-20.00.012.5

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3-1-1-16-1-2-2
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-1057-6210-3513-1145215-7-11012313-14-199-25-5139-64-56-7529866-29-6426-1549
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value108-4557-220271971-36
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value108-4557-220271971-36
Percentage of OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value-44193-111306176355-223-414-65-10474-33478-341-90-5-499-400-596301283-109360-475398451925178380
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value-44260355-223-414-65-25286535235-10474-33478-341-90-5-499-400-596301283-109360451
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0147.7100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-127108-130-2-12-14-2-2-612-3-12-70-4-10-5870-12-6-1-5-3-70-2
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-03-31
Value-4310431-242860-13-1-1-1-2-47-33-4-483-83433
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-03-31
Value134-120136257272173-218-122-135-15247271201-714-13286260-22537-33719412-140306259111-80451543751769129167659
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2304452682742755971722062011621441321511471871381121731414033012912081221301051591121421541271251091007955130
Percentage of OtherExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherGeneralExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value901721351191171589989131-288694868671936690448360
Percentage of OtherGeneralExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value-185-79-99-99-143-305173-93-17561-61-202-105-194-129134-317-194-22730-188-49-62-52-126-40496622
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.00.01000000.0-1000000.01000000.01000000.01000000.0
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities0.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-641-254-172-30-264-37-11-11-17-25-41-415-41-53-70-62-31-33-11-86-17-28-18-36-26-14-137
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock



Period End2020-03-312019-03-31
Value5000
Percentage of PaymentsForRepurchaseOfPreferredStockAndPreferenceStock100.00.0

us-gaap:PaymentsForRestructuring



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-31
Value3464527823392618910141830212831-25
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCostAndReserve

stt:AssetsAndOtherWriteOffs



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value00001002435511322
Percentage of PaymentsForRestructuring0.00.00.00.04.30.00.011.144.430.035.727.836.714.37.16.5

us-gaap:EmployeeSeverance



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value3362515318362213
Percentage of PaymentsForRestructuring97.196.998.167.978.392.384.672.2

us-gaap:FacilityClosing



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-31
Value121254343
Percentage of PaymentsForRestructuring2.93.11.932.117.47.715.416.7

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value893579609988128087408138652490115373922
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312012-03-312011-03-31
Value00005425326300000077
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.00.00.00.0100.0100.0100.00.00.00.00.00.00.0100.0

us-gaap:PaymentsToAcquireHeldToMaturitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2141190222394492348214922882421860481113251325131128442932867178264362340620250710511063115725702452178
Percentage of PaymentsToAcquireHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value79436427113718370165820113118378511348013551841141336518251112525
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock

us-gaap:PreferredStockDividendRatePercentage

us-gaap:SeriesFPreferredStock



Period End2020-03-31
Value0.0525
Percentage of PreferredStockDividendRatePercentage100.0

us-gaap:SeriesGPreferredStock



Period End2020-03-31
Value0.0535
Percentage of PreferredStockDividendRatePercentage101.9

us-gaap:SeriesHPreferredStock



Period End2020-03-31
Value0.05625
Percentage of PreferredStockDividendRatePercentage107.1

us-gaap:StatementClassOfStock

us-gaap:PreferredStockDividendsPerShareDeclared

stt:SeriesCPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.33
Percentage of PreferredStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:SeriesDPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.370.36999999999999990.370.370.370.36999999999999990.370.370.370.36999999999999990.370.370.370.36999999999999990.370.370.370.36999999999999990.370.370.370.36999999999999990.370.41
Percentage of PreferredStockDividendsPerShareDeclared112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1112.1124.2

stt:SeriesEPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.38000000000000010.380.380.380.38000000000000010.380.380.380.38000000000000010.380.380.380.38000000000000010.380.380.380.38000000000000010.380.380.46
Percentage of PreferredStockDividendsPerShareDeclared0.0115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2115.2139.4

stt:SeriesFPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value26.250.026.250.026.250.026.250.026.250.026.250.026.250.026.250.026.250.016.630.00.0
Percentage of PreferredStockDividendsPerShareDeclared7954.50.07954.50.07954.50.07954.50.07954.50.07954.50.07954.50.07954.50.07954.50.05039.40.00.0

stt:SeriesGPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.330.330.330000000000000070.330.240.00.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.072.70.00.00.00.0

stt:SeriesHPreferredStockDepositoryShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.028.120.028.130.012.180.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared0.08521.20.08524.20.03690.90.00.00.0

us-gaap:SeriesCPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1313.01311.01313.01313.01313.01311.01313.01313.01313.01311.01313.01313.01313.01311.01313.01313.01313.01311.01313.01313.01313.01313.01313.01313.01313.01311.01313.0
Percentage of PreferredStockDividendsPerShareDeclared397878.8397272.7397878.8397878.8397878.8397272.7397878.8397878.8397878.8397272.7397878.8397878.8397878.8397272.7397878.8397878.8397878.8397272.7397878.8397878.8397878.8397878.8397878.8397878.8397878.8397272.7397878.8

us-gaap:SeriesDPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01475.01655.00.0
Percentage of PreferredStockDividendsPerShareDeclared446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7446969.7501515.20.0

us-gaap:SeriesEPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-31
Value0.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01500.01833.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared0.0454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5454545.5555454.50.00.0

us-gaap:SeriesFPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2625.00.02625.00.02625.00.02625.00.02625.00.02625.00.02625.00.02625.00.02625.00.01663.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared795454.50.0795454.50.0795454.50.0795454.50.0795454.50.0795454.50.0795454.50.0795454.50.0795454.50.0503939.40.00.0

us-gaap:SeriesGPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1338.01338.01338.01338.01338.01338.01338.01338.01338.01338.01338.01338.01338.01337.01338.0951.00.00.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405454.5405151.5405454.5288181.80.00.00.00.0

us-gaap:SeriesHPreferredStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.02812.00.02813.00.01219.00.00.00.0
Percentage of PreferredStockDividendsPerShareDeclared0.0852121.20.0852424.20.0369393.90.00.00.0

us-gaap:StatementClassOfStock, us-gaap:SubsequentEventType

stt:SeriesCPreferredStockDepositoryShare, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-312016-01-312015-01-31
Value0.330.33330000.0330000.00.330.330.330.330.330.330.33
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.00.00.0

stt:SeriesDPreferredStockDepositoryShare, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-312016-01-312015-01-31
Value0.370.37370000.0370000.00.370.370.370.370.370.370.37
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.00.00.0

stt:SeriesFPreferredStockDepositoryShare, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-02-282017-07-312017-01-312016-01-31
Value00260000
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.0

stt:SeriesGPreferredStockDepositoryShare, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-31
Value0.330.33330000.0330000.00.330.330.330.330.33
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.0

us-gaap:SeriesCPreferredStock, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-312016-01-312015-01-31
Value00131313130000000
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SeriesDPreferredStock, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-312016-01-312015-01-31
Value00147514750000000
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SeriesFPreferredStock, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-02-282017-07-312017-01-312016-01-31
Value0026250000
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.0

us-gaap:SeriesGPreferredStock, us-gaap:SubsequentEvent



Period End2020-02-202019-07-312019-01-312018-10-312018-02-282017-10-312017-07-312017-04-302017-01-31
Value001338133800000
Percentage of PreferredStockDividendsPerShareDeclared0.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value42195020622152073959348931473571443872596441834268368506794370776544776768186973646775581016096698733972310790732911371
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2695319122822311260612932140170811551381102695167075848401726618100794689699383410336836674377656291185
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForInInterestBearingDepositsInBanks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-78770-6641210-867019176-9422127483052-12191-62712661317241468155-3921-1013710306-697748367-3333010125-657711440-22590-11539115393217722502363
Percentage of ProceedsFromPaymentsForInInterestBearingDepositsInBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1657457123837951521037025396711720
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfessionalFees



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value81867085801107989797871979410995829312213613696122971161059810379899681838482588581
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed



Period End2020-03-312019-03-31
Value364
Percentage of ProvisionForLoanLossesExpensed100.0100.0

us-gaap:ClassOfFinancingReceivableTypeOfBorrower

stt:AllOther



Period End2020-03-31
Value0.0
Percentage of ProvisionForLoanLossesExpensed0.0

stt:IncludesAllowancesonUnfundedCommitments



Period End2020-03-31
Value36
Percentage of ProvisionForLoanLossesExpensed100.0

stt:InstitutionalOtherLoans



Period End2020-03-31
Value0.0
Percentage of ProvisionForLoanLossesExpensed0.0

stt:OffBalanceSheetCommitments



Period End2020-03-31
Value3
Percentage of ProvisionForLoanLossesExpensed8.3

us-gaap:CommercialBorrower



Period End2020-03-31
Value2
Percentage of ProvisionForLoanLossesExpensed5.6

us-gaap:FinancialInstitutionsBorrower



Period End2020-03-31
Value27
Percentage of ProvisionForLoanLossesExpensed75.0

us-gaap:HeldtomaturitySecurities



Period End2020-03-31
Value4
Percentage of ProvisionForLoanLossesExpensed11.1

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, stt:InvestmentServicing



Period End2020-03-312019-03-31
Value364
Percentage of ProvisionForLoanLossesExpensed100.0100.0

us-gaap:RealizedInvestmentGainsLosses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value20-22-10-1
Percentage of RealizedInvestmentGainsLosses100.00.0100.0100.0100.00.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-06-302016-03-312015-06-302015-03-31
Value-55-2-790-4-18-10181-4-8-5
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-127108-13-1-2613-14-1-3-6121-1-1-69-4-10-5
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent240.0140.0-50.0-0.088.90.025.0144.4-130.00.00.00.0-33.30.00.0-100.025.00.00.0125.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8-2-3-2215-4-4
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-160.0-40.0150.0314.3166.70.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-10000-10-710-1024-2-21-33120
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent20.00.0-0.0-0.00.00.0-0.038.9-10.00.00.00.0133.30.00.0100.075.00.00.0-25.0-0.0

us-gaap:AccumulatedOtherThanTemporaryImpairment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.00.00.01000000.0-1000000.01000000.01000000.01000000.00.00.00.00.00.00.01000000.00.01000000.00.00.01000000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-0.00.0-0.0-0.011.10.0-25.0-5.6-10.00.00.00.00.00.00.0100.0-0.00.00.0-0.0-20.0

us-gaap:AccumulatedTranslationAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value000000000-100030000000
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-0.00.0-0.0-0.00.00.0-0.0-0.0-0.00.00.00.00.00.00.00.0-0.00.00.0-0.0-0.0

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value8355883142985095151111460111110101410241-161591591650625776101223
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value100100010001003-1-97-5200023-2
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value684947713131414214202660293653574033456250456146130997349
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value23292726111224-3-5071441128-74-4-8847131528-392-117142
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised33.859.257.436.635.538.758.5-7.1-35.70.026.923.313.830.652.8-12.310.0-12.1-195.675.826.033.345.9-84.81.5-11.197.385.7

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-31
Value4520204520191745192019462525256436373910937303385128110
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised66.240.842.663.464.561.341.5107.1135.7100.073.176.786.269.447.2112.390.0112.186.7175.874.066.754.1184.898.5111.1

us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchasedDuringPeriodShares

stt:TwoThousandandNineteenShareRepurchaseProgram



Period End2020-03-312019-12-312019-09-30
Value669
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0

us-gaap:StockholdersEquityOther



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-03-31
Value122-1636710-3-1120011-2611-101500010
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-312015-09-302015-06-302015-03-312014-06-302014-03-31
Value11-12-100-3-110100101
Percentage of StockholdersEquityOther100.04.5100.033.3-0.30.00.0100.0100.0100.00.0100.0-0.00.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOtherShares

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-03-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value1000.015000.0-2000.02000.0-15000.0-3000.07000.0-1000.01000.015000.0-4000.06000.0-11000.07000.05000.05000.017000.0-14000.07000.0-3000.0-18000.0
Percentage of StockholdersEquityOtherShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockAcquiredAverageCostPerShare

stt:TwoThousandandNineteenShareRepurchaseProgram



Period End2020-03-312019-12-312019-09-30
Value77.359.13000000000000353.15
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value6944000333264465444655666
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredParValueMethod



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value500500300300000350350350227523325325390325350350350470410410410420360
Percentage of TreasuryStockValueAcquiredParValueMethod100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-31
Value500500300300000350350350227523325325390325350350350470410410410420360
Percentage of TreasuryStockValueAcquiredParValueMethod100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-920-870-1000-885-1168-1332-1661-1446-1040-972-985-1266-1782-1936-1107-1124-1422
Percentage of AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-920-870-1000-885-1168-1332-1661-1446-1040-972-985-1266-1782-1936-1107-1124-1422
Percentage of AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-650-654-761-670-954-1112-809
Percentage of AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted70.775.276.175.781.783.583.2

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-650-654-761-670-954-1112-809
Percentage of AccumulatedOtherComprehensiveIncomeLossNetofTaxasAdjusted70.775.276.175.781.783.583.2

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:AdjustedQuarterlyAverageAssets

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value239861219624213997212127210099211924214103216896219582209328211396216940212361226310226093222666221880
Percentage of AdjustedQuarterlyAverageAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value239861219624213997212127210099211924214103216896219582209328211396216940212361226310226093222666221880
Percentage of AdjustedQuarterlyAverageAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value236431216397210625208933207417209413206070
Percentage of AdjustedQuarterlyAverageAssets98.698.598.498.598.798.898.4

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value236431216397210625208933207417209413206070
Percentage of AdjustedQuarterlyAverageAssets98.698.598.498.598.798.898.4

stt:AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedRepurchaseAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4925548887517174992250351450645897663016638486527273157691006761963959690317261370743670168258282709832569081987191900639993591097918849070394549854118889789945995469303911693199834994349329482622
Percentage of AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedRepurchaseAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value397797385428406202404029405299357893399249416084416860400828396123387747391101377919359107356490351581335420341789345178364212364411354516377258358240331732327567330675327948300510317151322835334664312598370985367471360922343410375916
Percentage of AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:AggregateFairValueOfIndemnifiedSecuritiesOnLoan



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value376975367901386978386241387314342337380389396801399064381817379459370472373533360452344191344257337941320436330821331552348960349766340239363060346789320078315632319407314940291075305721314750323429302342357485357854350286334235365251
Percentage of AggregateFairValueOfIndemnifiedSecuritiesOnLoan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:CollateralforIndemnifiedSecuritiesInvestedinIndemnifiedRepurchaseAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4603045658482634669847560426105553461270
Percentage of CollateralforIndemnifiedSecuritiesInvestedinIndemnifiedRepurchaseAgreements100.0100.0100.0100.0100.0100.0100.0100.0

stt:DebtSecuritiesHeldtomaturityPurchasedUnderMoneyMarketFacility



Period End2020-03-312019-12-31
Value268080
Percentage of DebtSecuritiesHeldtomaturityPurchasedUnderMoneyMarketFacility100.00.0

stt:DebtSecuritiesHeldtomaturityUnderMoneyMarketFacilityAllowanceforCreditLoss



Period End2020-03-31
Value4
Percentage of DebtSecuritiesHeldtomaturityUnderMoneyMarketFacilityAllowanceforCreditLoss100.0

stt:DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value25002310790163064098711911557777204563730971211906776
Percentage of DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeAssetReverseRepurchaseAgreementsAndSecuritiesBorrowedNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value233352476430750300862962929443326493252330045266583180529831277503048129656308693127728302357473156239228262652709821955208772299719909215951811612281
Percentage of DerivativeAssetReverseRepurchaseAgreementsAndSecuritiesBorrowedNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeCollateralObligationtoReturnSecuritiesandCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value14166854776154682207310025912410616728247405
Percentage of DerivativeCollateralObligationtoReturnSecuritiesandCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeCollateralObligationtoReturnSecuritiesandCashNetofOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value39122995127022501107120712641657103621697433264123911531181
Percentage of DerivativeCollateralObligationtoReturnSecuritiesandCashNetofOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeCollateralRighttoReclaimSecuritiesandCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value11015577968786332152633301054502623189618064
Percentage of DerivativeCollateralRighttoReclaimSecuritiesandCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeCollateralRighttoReclaimSecuritiesandCashNetofOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value6887139422281425182515561660326414208721336151148925361182
Percentage of DerivativeCollateralRighttoReclaimSecuritiesandCashNetofOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value57908401430550119013411397293413154221074119339323561118
Percentage of DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellAndSecuritiesLoanedNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value212181833520682201161950817848220291930517500125751368014623131581541813345166861560111901154131977924301217132331020084195502083222821210221882613320
Percentage of DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellAndSecuritiesLoanedNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ExpectedLossesFromOtherThanTemporaryImpairmentOnHeldToMaturitySecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-03-312010-12-312009-12-31
Value2212325766678911131516182225293135394751545965-76-8383869886111387
Percentage of ExpectedLossesFromOtherThanTemporaryImpairmentOnHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear



Period End2020-03-31
Value29
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear100.0

us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment

stt:IndemnifiedSecuritiesFinancing, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:StandbyLettersOfCredit, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:UnfundedLoanCommitment, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment

stt:FinancingReceivablesandOffBalanceSheetCommitments



Period End2020-03-31
Value29
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear100.0

stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:GeographicDistributionDomestic



Period End2020-03-31
Value29
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear100.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, stt:Speculative



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, stt:Speculative



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Substandard



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear0.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value29
Percentage of FinancingReceivableOriginatedFiveYearsbeforeLatestFiscalYear100.0

stt:FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear



Period End2020-03-31
Value70
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear100.0

us-gaap:FinancialInstrument, us-gaap:FinancingReceivablePortfolioSegment

stt:IndemnifiedSecuritiesFinancing, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:StandbyLettersOfCredit, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:UnfundedLoanCommitment, stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment

stt:FinancingReceivablesandOffBalanceSheetCommitments



Period End2020-03-31
Value70
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear100.0

stt:OffBalanceSheetCommitmentandGuarantees



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign



Period End2020-03-31
Value70
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear100.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:GeographicDistributionDomestic



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, stt:Speculative



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, stt:Speculative



Period End2020-03-31
Value70
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear100.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

stt:CommercialandFinancialPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Substandard



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:InternalInvestmentGrade



Period End2020-03-31
Value0.0
Percentage of FinancingReceivableOriginatedMoreThanFiveYearsbeforeLatestFiscalYear0.0

us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

stt:LoansAndLeasesReceivableNumberOfLoans

stt:CommercialAndFinancial, stt:IndividuallyEvaluatedforImpairment



Period End2020-03-312019-12-312019-09-302018-12-31
Value2.01.00.01.0
Percentage of LoansAndLeasesReceivableNumberOfLoans100.0100.00.0100.0

us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

stt:LoansAndLeasesReceivableOverdrafts

stt:CommercialAndFinancialInvestmentFunds, us-gaap:GeographicDistributionDomestic



Period End2020-03-312019-12-31
Value86853256
Percentage of LoansAndLeasesReceivableOverdrafts100.0100.0

stt:NetUnrealizedGainsLossesonAvailableforsaleSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value579445565429172-135-308-90321673192720-200514527242-19206169507312300438133-128705
Percentage of NetUnrealizedGainsLossesonAvailableforsaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:NetUnrealizedLossOnAvailableForSaleSecuritiesDesignatedInFairValueHedges



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value433641515640355560647377798611813112910912911313612110612010797122123168183-196-195178210231127210135113
Percentage of NetUnrealizedLossOnAvailableForSaleSecuritiesDesignatedInFairValueHedges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:NetUnrealizedLossOnHedgesOfNetInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value-154-46-91-34-36-16113010165526-81-95-41-371414141414141414141414141414-14-14-1414141414141414
Percentage of NetUnrealizedLossOnHedgesOfNetInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:NetUnrealizedLossRelatedToReclassifiedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value-23-19-56-57-58-58-22-22-22-19-18-18-21-2528232428-26-30-35-39-46546172818997110-120-137-1671892152472933176351390
Percentage of NetUnrealizedLossRelatedToReclassifiedSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:NumberofPortfolioSegments



Period End2020-03-31
Value2.0
Percentage of NumberofPortfolioSegments100.0

stt:OtherAssetsAdvances



Period End2020-03-312019-12-31
Value1070670
Percentage of OtherAssetsAdvances100.0100.0

stt:OtherAssetsCollateralNet



Period End2020-03-312019-12-31
Value2729874
Percentage of OtherAssetsCollateralNet100.0100.0

stt:RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value134321187615768151211543012605173071397913583669391368171910294169783898380167769112971541317311154051639716564152381457316514150261864312992
Percentage of RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RepurchaseAgreementsAndSecuritiesLoanedAmountOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value187210831315137513271062166714705312394257223272187235722022253212724192196226017541405211616432110140623687851844112866
Percentage of RepurchaseAgreementsAndSecuritiesLoanedAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RepurchaseAgreementsAndSecuritiesLoanedCollateralRightToReclaimCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value115601079314453137461410311543156401250913052429965645844691570597461662257975287905313066152741387214173147581301513036140021403600
Percentage of RepurchaseAgreementsAndSecuritiesLoanedCollateralRightToReclaimCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedAmountOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3374391115103196413825793100000022125038849065053212955469313132196240785631759211722
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowedAmountOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value16769315997712975412774477842918895215047108364684743436728349973740135517365803825138404389973670533810314072915729692292083030730700299742616700
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowedAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedCollateralObligationToReturnCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1328519572245952542324487228722734326063260932264527093257032473422939257832158924882228122978026178308421815718185176001509914983153601519200
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowedCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value136222001125710264542545124254279222637226093226452709325703247342316026153220852546423525303602639431180183311838619076174081752115589154601779411848
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowedLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1676931599781297541277447784291889521504710836468474343672834997374013551736580382513840438997367053381031407291572969229208303073070029974261672726623005
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowedLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value181315179989155464154198103293116143800727348262561700796382160700621355867762733603366386862522670656020462587474884807848284477154822145563416274506034853
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value18112517185314552214286593272104494694576108750051541274586443168465034493346363472344642046766480024922348718445624608945772455454527346488411931864312992
Percentage of ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-281-150-158-129-167-194-194-186-118-76-122-155-161-155-88-88-60
Percentage of RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-281-150-158-129-167-194-194-186-118-76-122-155-161-155-88-88-60
Percentage of RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-111-10-1-1-29-5
Percentage of RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther39.50.7-0.00.80.614.96.6

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-111-10-1-1-29-5
Percentage of RiskBasedCapitalAdjustmentCommonEquityTierOneCapitalOther39.50.7-0.00.80.614.96.6

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value89949112911792579294935070167008716968776739671466416348648361445927
Percentage of RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value89949112911792579294935070167008716968776739671466416348648361445927
Percentage of RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8726883988458979901690736579
Percentage of RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted97.097.097.097.097.097.095.7

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8726883988458979901690736579
Percentage of RiskBasedCapitalAdjustmentGoodwillandOtherIntangibleAssetsNetofAssociatedDeferredTaxLiabilitiesasAdjusted97.097.097.097.097.097.095.7

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:RiskWeightedAssetsCreditRisk

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value6046854763517265197449451477385027248308488434997650197527555275950900519165574851733
Percentage of RiskWeightedAssetsCreditRisk100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1109131023671070131063221022849730310451510606310894610134910637710578596948981259666810293293515
Percentage of RiskWeightedAssetsCreditRisk183.4186.9206.9204.6206.8203.8207.9219.6223.1202.8211.9200.5183.8192.8186.2184.6180.8

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value57169516104918349810471064556549489
Percentage of RiskWeightedAssetsCreditRisk94.594.295.195.895.395.499.0

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value10738098979104242103544996739477698433
Percentage of RiskWeightedAssetsCreditRisk177.6180.7201.5199.2201.6198.5197.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:RiskWeightedAssetsMarketRiskEquivalents

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value18501638168816501359151712554203363033583005338732863822317738283937
Percentage of RiskWeightedAssetsMarketRiskEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value18501638168816501359151712551677153113341203128415461751170615602378
Percentage of RiskWeightedAssetsMarketRiskEquivalents100.0100.0100.0100.0100.0100.0100.039.942.239.740.037.947.045.853.740.860.4

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1850163816881650135915171334
Percentage of RiskWeightedAssetsMarketRiskEquivalents100.0100.0100.0100.0100.0100.039.7

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1850163816881650135915171334
Percentage of RiskWeightedAssetsMarketRiskEquivalents100.0100.0100.0100.0100.0100.039.7

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:RiskWeightedAssetsOperationalRisk

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4673847963469134707547213460604584045991460394582245795441234479844579446434443643882
Percentage of RiskWeightedAssetsOperationalRisk100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value43925441384412544288444164449445295
Percentage of RiskWeightedAssetsOperationalRisk94.092.094.194.194.196.698.8

stt:SecuritiesBorrowedSubjectToMasterNettingArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value12585185242266924723239291957523727227892095719404236282253122553212042371120075217422012121205219471984915941157831539511321112919762989190916832
Percentage of SecuritiesBorrowedSubjectToMasterNettingArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

stt:SecuritiesFinanceCollateralObligationtoReturnCash

stt:AccruedExpensesAndOtherLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value8060107701444013290140101152015617108911156038505270431051005020542046303790327033504240696064807010740062906620639058704990
Percentage of SecuritiesFinanceCollateralObligationtoReturnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:ShortTermBorrowingsUnderMoneyMarketLiquidityFacility



Period End2020-03-312019-12-31
Value256650
Percentage of ShortTermBorrowingsUnderMoneyMarketLiquidityFacility100.00.0

stt:StandByLettersOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value32733324330733652973298530062955295731583255341034403459359741594293470047694966478247204455455648704612460139944565455239384174
Percentage of StandByLettersOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2139021475215042175321360211242091319417192371915719300188761812118127188401875018420
Percentage of StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value2139021475215042175321360211242091319417192371915719300188761812118127188401875018420
Percentage of StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value26179254572631126591262132604323115
Percentage of StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted122.4118.5122.4122.2122.7123.3120.7

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value26179254572631126591262132604323115
Percentage of StockholdersEquityAttributabletoParentExcludingPreferredSharesAsAdjusted122.4118.5122.4122.2122.7123.3120.7

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TierOneCommonRiskBasedCapital

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value17342166171746617611171961694116531
Percentage of TierOneCommonRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value17342166171746617611171961694116531
Percentage of TierOneCommonRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0

stt:TierOneCommonRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.080.0850.0850.0850.0850.0750.0750.0750.0750.0650.0650.0650.0650.0550.0550.0550.0550.0450.0450.0450.0450.04
Percentage of TierOneCommonRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value0.1110.1170.1220.1230.1210.1210.1410.1240.1210.1230.1260.120.1120.1170.1230.120.125
Percentage of TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value0.1070.1170.1130.1150.1150.1170.130.1130.1080.1190.1160.1120.1150.1160.1250.120.13
Percentage of TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets96.4100.092.693.595.096.792.291.189.396.792.193.3102.799.1101.6100.0104.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.1680.1710.1840.1840.1850.1850.172
Percentage of TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets151.4146.2150.8149.6152.9152.9139.8

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.1590.1650.1650.1670.170.1760.166
Percentage of TierOneCommonRiskBasedCapitaltoTotalRiskWeightedAssets143.2141.0135.2135.8140.5145.5135.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TotalCapitalALLLandOther

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-17-5-4-11-10-14-500-4-5-40-19-3-3-12
Percentage of TotalCapitalALLLandOther100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-123-90-86-87-84-83-74-73-72-72-79-75-75-77-75-78-66
Percentage of TotalCapitalALLLandOther723.51800.02150.0790.9840.0592.91480.00.00.01800.01580.01875.00.0405.32500.02600.0550.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-18-3-3-8-6-110
Percentage of TotalCapitalALLLandOther105.960.075.072.760.078.6-0.0

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-123-90-86-87-83-83-72
Percentage of TotalCapitalALLLandOther723.51800.02150.0790.9830.0592.91800.0

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TotalCapitalQualifyingSubordinatedLongTermDebt

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-1168-1095-607-603-787-778-761-765-961-980-1072-1074-1067-1172-1259-1259-1358
Percentage of TotalCapitalQualifyingSubordinatedLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-1168-1095-607-603-787-778-761-765-961-980-1072-1074-1067-1172-1259-1259-1358
Percentage of TotalCapitalQualifyingSubordinatedLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-1172-1099-604-601-785-776-983
Percentage of TotalCapitalQualifyingSubordinatedLongTermDebt100.3100.499.599.799.799.7100.3

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-1172-1099-604-601-785-776-983
Percentage of TotalCapitalQualifyingSubordinatedLongTermDebt100.3100.499.599.799.799.7100.3

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TotalCommonStockandRelatedSurplus

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1065910636106211061310586105651092210324103001030210307103071030010286102821027110250
Percentage of TotalCommonStockandRelatedSurplus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1065910636106211061310586105651092210324103001030210307103071030010286102821027110250
Percentage of TotalCommonStockandRelatedSurplus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value12893128931287812894128941289411612
Percentage of TotalCommonStockandRelatedSurplus121.0121.2121.3121.5121.8122.0112.7

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value12893128931287812894128941289411612
Percentage of TotalCommonStockandRelatedSurplus121.0121.2121.3121.5121.8122.0112.7

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TotalRiskWeightedAssets

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value10905610436410032710069998023953159736798502985129915698997100265100843993019973610401299552
Percentage of TotalRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1127631040051087011079721036439882010577010774011047710268310758010706998494998769837410449295893
Percentage of TotalRiskWeightedAssets103.499.7108.3107.2105.7103.7108.6109.4112.1103.6108.7106.897.7100.698.6100.596.3

us-gaap:ConsolidatedEntities, stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

srt:Subsidiaries, stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value102944973869499695748928819157696118
Percentage of TotalRiskWeightedAssets94.493.394.795.194.896.196.9

srt:Subsidiaries, stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1092301006171059301051941010329629399767
Percentage of TotalRiskWeightedAssets100.296.4105.6104.5103.1101.0100.6

stt:RegulatoryCapitalrequirementsforBankingOrganizationsbyImplementationApproaches

stt:TreasuryStockValueExcludingPreferredShares

stt:BaselIIIAdvancedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1066410209972992498969871587359317933490298697836781597682738270836457
Percentage of TreasuryStockValueExcludingPreferredShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:BaselIIIstandardizedApproach



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1066410209972992498969871587359317933490298697836781597682738270836457
Percentage of TreasuryStockValueExcludingPreferredShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stt:VariableInterestEntityFairValueOfCollateralizedAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value930940990106010601050113012101210125012901310136013501760203020602100215021802240227023002320233023302380242026302680272027402750281028502830279028503130
Percentage of VariableInterestEntityFairValueOfCollateralizedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

stt:USStatesandPoliticalSubdivisionsDebtSecuritiesTrusts



Period End2020-03-312019-12-312018-12-31
Value9309401050
Percentage of VariableInterestEntityFairValueOfCollateralizedAssets100.0100.0100.0

us-gaap:AccountsReceivableNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312010-12-312009-12-31
Value70643288910187603433613395543483937193178864549611240101851340368
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value327432313258320232773203319630863183309930432805269026442594239923712346227123852281224223182221219721232094205521031970193319141966182219321871185017331497
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesCurrentAndNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value30151248572865327350272742420928222244962234015606173901773215469169011758222166203881464315804176462361020237229561924918457191941992919329186431719617783164391668318017203871477915873117829281
Percentage of AccruedLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value556426509372114-193-330-11210148301254-21-2255425502669180139472273254492194-5613836849815-823-304-260-110253192-49-90-1001-3815
Percentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100