$STT
State Street Corp Stock $stt

$stt Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000009375119000595 Filed on October 25, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue		$2.903B	$2.989B
YoY Change		-2.88%	5.02%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$376.0M	$332.0M
YoY Change		13.25%	12.16%
% of Gross Profit
Depreciation & Amortization	$363.0M	$340.0M	$287.0M
YoY Change	10.33%	18.47%	4.36%
% of Gross Profit
Operating Expenses		$376.0M	$332.0M
YoY Change		13.25%	12.16%
Operating Profit
YoY Change
Interest Expense		$357.0M	$244.0M
YoY Change		46.31%	54.43%
% of Operating Profit
Other Income/Expense, Net		$268.0M	$251.0M
YoY Change		6.77%	74.31%
Pretax Income	$638.0M	$721.0M	$893.0M
YoY Change	20.6%	-19.26%	8.64%
Income Tax	$74.00M	$138.0M	$129.0M
% Of Pretax Income	11.6%	19.14%	14.45%
Net Earnings	$564.0M	$583.0M	$764.0M
YoY Change	29.06%	-23.69%	11.53%
Net Earnings / Revenue		20.08%	25.56%
Basic Earnings Per Share		$1.44	$1.89
Diluted Earnings Per Share	$1.543M	$1.42	$1.87
COMMON SHARES
Basic Shares Outstanding	363.6M shares	366.7M shares	375.0M shares
Diluted Shares Outstanding		370.6M shares	379.4M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.302B	$3.598B	$4.279B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$2.282B	$2.306B	$2.193B
YoY Change	3.07%	5.15%	1.2%
Goodwill	$7.556B	$7.500B	$6.016B
YoY Change	1.48%	24.67%	0.32%
Intangibles
YoY Change
Long-Term Investments	$2.899B	$3.064B	$2.797B
YoY Change	0.59%	9.55%	33.25%
Other Assets	$216.0M	$95.00M	$120.0M
YoY Change	91.15%	-20.83%	-43.66%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$245.6B	$244.6B	$234.0B
YoY Change	0.41%	4.53%	-0.84%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$18.40B	$23.73B	$23.50B
YoY Change	-3.11%	1.0%	85.36%
Deferred Revenue
YoY Change
Short-Term Debt	$1.941B	$8.403B	$2.699B
YoY Change	-53.5%	211.34%	-47.29%
Long-Term Debt Due	$41.00M	$10.00M
YoY Change
Total Short-Term Liabilities	$18.44B	$23.74B	$23.50B
YoY Change	-2.9%	1.04%	85.36%
LONG-TERM LIABILITIES
Long-Term Debt	$12.47B	$11.45B	$10.34B
YoY Change	12.4%	10.74%	-11.79%
Other Long-Term Liabilities	$6.459B	$4.919B	$4.722B
YoY Change	23.19%	4.17%	0.21%
Total Long-Term Liabilities	$18.93B	$16.36B	$15.06B
YoY Change	15.86%	8.68%	-8.35%
TOTAL LIABILITIES
Total Short-Term Liabilities	$18.44B	$23.74B	$23.50B
Total Long-Term Liabilities	$18.93B	$16.36B	$15.06B
Total Liabilities	$221.2B	$219.4B	$209.5B
YoY Change	0.6%	4.75%	-1.89%
SHAREHOLDERS EQUITY
Retained Earnings	$21.92B	$21.61B	$20.39B
YoY Change	6.64%	6.01%	9.17%
Common Stock	$504.0M	$504.0M	$504.0M
YoY Change	0.0%	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.21B	$9.729B	$8.735B
YoY Change	17.14%	11.38%	0.44%
Treasury Stock Shares	146.5M shares	140.3M shares	124.4M shares
Shareholders Equity	$24.43B	$25.21B	$24.50B
YoY Change
Total Liabilities & Shareholders Equity	$245.6B	$244.6B	$234.0B
YoY Change	0.41%	4.53%	-0.84%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$564.0M	$583.0M	$764.0M
YoY Change	29.06%	-23.69%	11.53%
Depreciation, Depletion And Amortization	$363.0M	$340.0M	$287.0M
YoY Change	10.33%	18.47%	4.36%
Cash From Operating Activities	$1.053B	$4.964B	$5.659B
YoY Change	-5.48%	-12.28%	-364.19%
INVESTING ACTIVITIES
Capital Expenditures	-$161.0M	-$227.0M	-$151.0M
YoY Change	-6.94%	50.33%	-5.63%
Acquisitions
YoY Change
Other Investing Activities	-$5.362B	-$5.429B	$13.31B
YoY Change	-65.96%	-140.78%	121.05%
Cash From Investing Activities	-$5.523B	-$5.656B	$13.16B
YoY Change	-65.32%	-142.97%	124.51%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	4.174B	1.180B	-18.33B
YoY Change	-69.63%	-106.44%	523.76%
NET CHANGE
Cash From Operating Activities	1.053B	4.964B	5.659B
Cash From Investing Activities	-5.523B	-5.656B	13.16B
Cash From Financing Activities	4.174B	1.180B	-18.33B
Net Change In Cash	-296.0M	488.0M	496.0M
YoY Change	-72.26%	-1.61%	-36.65%
FREE CASH FLOW
Cash From Operating Activities	$1.053B	$4.964B	$5.659B
Capital Expenditures	-$161.0M	-$227.0M	-$151.0M
Free Cash Flow	$1.214B	$5.191B	$5.810B
YoY Change	-5.67%	-10.65%	-393.14%

Facts In Submission

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	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000093751
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-07511
	dei	Entity Registrant Name EntityRegistrantName	STATE STREET CORP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2456637
	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Lincoln Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Boston,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02111
	dei	City Area Code CityAreaCode	(617)
	dei	Local Phone Number LocalPhoneNumber	786-3000
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	583000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	764000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1678000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	2156000000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	528000000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	708000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1517000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2008000000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.89
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.44
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.42
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.37
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	366732000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	374963000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	372766000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	369368000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	370595000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	379383000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	376361000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	374064000	shares
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.47
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.46
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.31
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	583000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	764000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-264000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-57000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	136000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-204000000	USD
CY2019Q3	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	10000000	USD
CY2018Q3	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	6000000	USD
CY2019Q3	stt	Other Comprehensive Income Loss Expected Losses From Otti On Htm Securities Not From Credit Net Of Taxes OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditNetOfTaxes	1000000	USD
CY2018Q3	stt	Other Comprehensive Income Loss Expected Losses From Otti On Htm Securities Not From Credit Net Of Taxes OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditNetOfTaxes	2000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	7000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	30000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-111000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-223000000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	472000000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	541000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1678000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	2156000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-248000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-244000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	665000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-475000000	USD
	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	13000000	USD
	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	29000000	USD
	stt	Other Comprehensive Income Loss Expected Losses From Otti On Htm Securities Not From Credit Net Of Taxes OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditNetOfTaxes	2000000	USD
	stt	Other Comprehensive Income Loss Expected Losses From Otti On Htm Securities Not From Credit Net Of Taxes OtherComprehensiveIncomeLossExpectedLossesFromOttiOnHtmSecuritiesNotFromCreditNetOfTaxes	1000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	32000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-27000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	9000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-14000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	455000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-702000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2133000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1454000000	USD
CY2019Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3598000000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3212000000	USD
CY2019Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	62324000000	USD
CY2018Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	73040000000	USD
CY2019Q3	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	3041000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	4679000000	USD
CY2019Q3	us-gaap	Trading Securities TradingSecurities	839000000	USD
CY2018Q4	us-gaap	Trading Securities TradingSecurities	860000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	54757000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	45148000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	39119000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	41914000000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	26938000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	25722000000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2306000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2214000000	USD
CY2019Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	3258000000	USD
CY2018Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	3203000000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	7500000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	7446000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2077000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2369000000	USD
CY2019Q3	us-gaap	Other Assets OtherAssets	38849000000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	34789000000	USD
CY2019Q3	us-gaap	Assets Assets	244606000000	USD
CY2018Q4	us-gaap	Assets Assets	244596000000	USD
CY2019Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	33719000000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	44804000000	USD
CY2019Q3	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	72260000000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	66235000000	USD
CY2019Q3	us-gaap	Interest Bearing Deposit Liabilities Foreign InterestBearingDepositLiabilitiesForeign	64907000000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities Foreign InterestBearingDepositLiabilitiesForeign	69321000000	USD
CY2019Q3	us-gaap	Deposits Deposits	170886000000	USD
CY2018Q4	us-gaap	Deposits Deposits	180360000000	USD
CY2019Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	1330000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	1082000000	USD
CY2019Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	7073000000	USD
CY2018Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	3092000000	USD
CY2019Q3	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	28653000000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	24232000000	USD
CY2019Q3	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	11455000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	11093000000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	219397000000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	219859000000	USD
CY2019Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q3	us-gaap	Common Stock Value CommonStockValue	504000000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	504000000	USD
CY2019Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	10117000000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	10061000000	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	21612000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	20553000000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-985000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1356000000	USD
CY2019Q3	us-gaap	Treasury Stock Value TreasuryStockValue	9729000000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8715000000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	25209000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	24737000000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	244606000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	244596000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	22270000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	659000000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-65000000	USD
CY2018Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	154000000	USD
CY2018Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	55000000	USD
CY2018Q1	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	350000000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	42000000	USD
CY2018Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3000000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	22350000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	733000000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-414000000	USD
CY2018Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	153000000	USD
CY2018Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	36000000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	41000000	USD
CY2018Q2	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	22521000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	764000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-223000000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	494000000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	1150000000	USD
CY2018Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	179000000	USD
CY2018Q3	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	55000000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	31000000	USD
CY2018Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	1000000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	24502000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	24737000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	508000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	260000000	USD
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	177000000	USD
CY2019Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	55000000	USD
CY2019Q1	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	300000000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	71000000	USD
CY2019Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	6000000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	25038000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	587000000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	306000000	USD
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	175000000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	50000000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	300000000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	47000000	USD
CY2019Q2	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1000000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	25454000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	583000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-111000000	USD
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	189000000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	55000000	USD
CY2019Q3	us-gaap	Treasury Stock Value Acquired Par Value Method TreasuryStockValueAcquiredParValueMethod	500000000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	49000000	USD
CY2019Q3	us-gaap	Stockholders Equity Other StockholdersEquityOther	22000000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	25209000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1678000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	2156000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-91000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	178000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	145000000	USD
	stt	Noncash Adjustments For Depreciation Amortization Accretion NoncashAdjustmentsForDepreciationAmortizationAccretion	796000000	USD
	stt	Noncash Adjustments For Depreciation Amortization Accretion NoncashAdjustmentsForDepreciationAmortizationAccretion	729000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-1000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6000000	USD
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-21000000	USD
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-92000000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	55000000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	97000000	USD
	us-gaap	Increase Decrease In Cash Collateral For Loaned Securities IncreaseDecreaseInCashCollateralForLoanedSecurities	216000000	USD
	us-gaap	Increase Decrease In Cash Collateral For Loaned Securities IncreaseDecreaseInCashCollateralForLoanedSecurities	7236000000	USD
	stt	Change In Unrealized Gains Losses Related To Financial Instruments ChangeInUnrealizedGainsLossesRelatedToFinancialInstruments	-254000000	USD
	stt	Change In Unrealized Gains Losses Related To Financial Instruments ChangeInUnrealizedGainsLossesRelatedToFinancialInstruments	2118000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	279000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-47000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1471000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	873000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-341000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-95000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4637000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9061000000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	10716000000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	3609000000	USD
	stt	Net Increase Decrease In Federal Funds Sold And Securities Purchased Under Resale Agreements NetIncreaseDecreaseInFederalFundsSoldAndSecuritiesPurchasedUnderResaleAgreements	1638000000	USD
	stt	Net Increase Decrease In Federal Funds Sold And Securities Purchased Under Resale Agreements NetIncreaseDecreaseInFederalFundsSoldAndSecuritiesPurchasedUnderResaleAgreements	-954000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5185000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	15712000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	15387000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	11156000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	30204000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	17949000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	7199000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	5003000000	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	5036000000	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	4390000000	USD
	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	1220000000	USD
	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	53000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	54000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	63000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	611000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	243000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	569000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	436000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-466000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-39000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2897000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	11431000000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-11341000000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	1606000000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	1868000000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	-18304000000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	4229000000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	-1287000000	USD
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	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	1032000000	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	495000000	USD
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	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1150000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1100000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	350000000	USD
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	stt	Repurchases Of Common Stock For Employee Tax Withholding RepurchasesOfCommonStockForEmployeeTaxWithholding	-113000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	691000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	608000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-7148000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-18217000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	386000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2275000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3212000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2004000000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3598000000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4279000000	USD
CY2019Q3	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	790000000	USD
CY2019Q3	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1430000000	USD
CY2018Q4	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	990000000	USD
CY2018Q4	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1340000000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2123000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-1000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-29000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	104000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	98000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	230000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	162000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2167000000	USD
CY2019Q3	stt	Change In Unrealized Gains Losses Related To Financial Instruments Assets Held At Period End ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd	0	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1288000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-2000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-30000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	914000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	275000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	446000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	174000000	USD
CY2019Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2167000000	USD
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CY2018Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1501000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-1000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-8000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	79000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	245000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	54000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	64000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1316000000	USD
CY2018Q3	stt	Change In Unrealized Gains Losses Related To Financial Instruments Assets Held At Period End ChangeInUnrealizedGainsLossesRelatedToFinancialInstrumentsAssetsHeldAtPeriodEnd	-2000000	USD
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	2127000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-25000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	778000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	983000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	306000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	122000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	397000000	USD
CY2018Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1316000000	USD
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CY2019Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	54059000000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	733000000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	35000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	54757000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	45359000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	107000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	318000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	45148000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	39119000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	485000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	69000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	39535000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	41914000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	175000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	738000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	41351000000	USD
CY2019Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	45680000000	USD
CY2018Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	38870000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	9143000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	18000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2914000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	17000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	12057000000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	35000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	5644000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	25000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	8079000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	44000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	13723000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	69000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	17740000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	110000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	6886000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	208000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	24626000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	318000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	9461000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	155000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	23757000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	583000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	33218000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	738000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	7825000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	18911000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	8109000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	19912000000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	54757000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	4681000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	8353000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2339000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	23746000000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	39119000000	USD
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	78000000	USD
CY2017Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	77000000	USD
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CY2019Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	77000000	USD
CY2018Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	79000000	USD
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CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	25789000000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	71000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	67000000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	26938000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	25722000000	USD
CY2019Q3	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	7490000000	USD
CY2018Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	6510000000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	27009000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	25789000000	USD
CY2019Q3	stt	Financing Receivable Recorded Investment Nonaccrual Status Numberof Loans FinancingReceivableRecordedInvestmentNonaccrualStatusNumberofLoans	0	loan
CY2019Q3	stt	Financing Receivable Recorded Investment Equal To Greater Than90 Day FinancingReceivableRecordedInvestmentEqualToGreaterThan90Day	0	loan
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0	loan
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	72000000	USD
CY2018Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55000000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2000000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5000000	USD
CY2019Q3	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2000000	USD
CY2018Q3	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	0	USD
CY2019Q3	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-1000000	USD
CY2018Q3	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	0	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	71000000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60000000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	67000000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54000000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7000000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7000000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2000000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1000000	USD
	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-1000000	USD
	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	0	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	71000000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	60000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	6022000000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1512000000	USD
CY2018	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-88000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	7446000000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	122000000	USD
	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-68000000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	7500000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1613000000	USD
CY2018	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	1007000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	226000000	USD
CY2018	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-25000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2369000000	USD
	us-gaap	Finite Lived Intangible Assets Purchase Accounting Adjustments FiniteLivedIntangibleAssetsPurchaseAccountingAdjustments	-93000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	178000000	USD
	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-21000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2077000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4244000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2167000000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2077000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4430000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2061000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2369000000	USD
CY2019Q3	stt	Securities Borrowed Subject To Master Netting Arrangements SecuritiesBorrowedSubjectToMasterNettingArrangements	22669000000	USD
CY2018Q4	stt	Securities Borrowed Subject To Master Netting Arrangements SecuritiesBorrowedSubjectToMasterNettingArrangements	19575000000	USD
CY2019Q3	us-gaap	Derivative Assets DerivativeAssets	5040000000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	5189000000	USD
CY2019Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	3388000000	USD
CY2018Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	3323000000	USD
CY2019Q3	us-gaap	Equity Method Investments EquityMethodInvestments	3064000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2882000000	USD
CY2019Q3	us-gaap	Accounts Receivable Net AccountsReceivableNet	889000000	USD
CY2018Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	308000000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	834000000	USD
CY2019Q3	us-gaap	Deposit Liabilities Collateral Issued Financial Instruments DepositLiabilitiesCollateralIssuedFinancialInstruments	707000000	USD
CY2018Q4	us-gaap	Deposit Liabilities Collateral Issued Financial Instruments DepositLiabilitiesCollateralIssuedFinancialInstruments	1354000000	USD
CY2019Q3	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	430000000	USD
CY2018Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	493000000	USD
CY2019Q3	stt	Receivable For Security Settlement ReceivableForSecuritySettlement	429000000	USD
CY2018Q4	stt	Receivable For Security Settlement ReceivableForSecuritySettlement	531000000	USD
CY2019Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	119000000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	129000000	USD
CY2019Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	95000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	113000000	USD
CY2019Q3	us-gaap	Deposits With Clearing Organizations And Others Securities DepositsWithClearingOrganizationsAndOthersSecurities	58000000	USD
CY2018Q4	us-gaap	Deposits With Clearing Organizations And Others Securities DepositsWithClearingOrganizationsAndOthersSecurities	58000000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	1127000000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	834000000	USD
CY2019Q3	us-gaap	Other Assets OtherAssets	38849000000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	34789000000	USD
CY2019Q3	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	76000000	USD
CY2018Q3	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-12000000	USD
CY2019Q3	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	-74000000	USD
CY2018Q3	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	12000000	USD
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	356000000	USD
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-591000000	USD
	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	-348000000	USD
	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	578000000	USD
CY2019Q3	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	10000000	USD
CY2018Q3	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	6000000	USD
	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	13000000	USD
	stt	Other Comprehensive Income Loss Securities Available For Sale Designated In Fair Value Hedges Unrealized Holding Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleDesignatedInFairValueHedgesUnrealizedHoldingGainLossArisingDuringPeriodAfterTax	29000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	14000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	31000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	4000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	5000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax	57000000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax	19000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax	0	USD
CY2019Q3	stt	Other Comprehensive Income Loss Derivative Before Reclassification And Tax OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax	71000000	USD
CY2018Q3	stt	Other Comprehensive Income Loss Derivative Before Reclassification And Tax OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax	50000000	USD
CY2019Q3	stt	Other Comprehensive Income Loss Derivative Gain Loss Reclassificationbefore Tax OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax	4000000	USD
CY2018Q3	stt	Other Comprehensive Income Loss Derivative Gain Loss Reclassificationbefore Tax OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	57000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-21000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	14000000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	20000000	USD
	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax	75000000	USD
	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossBeforeReclassificationAndTax	54000000	USD
	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Net Investment Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationBeforeTax	0	USD
	stt	Other Comprehensive Income Loss Derivative Before Reclassification And Tax OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax	132000000	USD
	stt	Other Comprehensive Income Loss Derivative Before Reclassification And Tax OtherComprehensiveIncomeLossDerivativeBeforeReclassificationAndTax	33000000	USD
	stt	Other Comprehensive Income Loss Derivative Gain Loss Reclassificationbefore Tax OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax	14000000	USD
	stt	Other Comprehensive Income Loss Derivative Gain Loss Reclassificationbefore Tax OtherComprehensiveIncomeLossDerivativeGainLossReclassificationbeforeTax	20000000	USD
CY2019Q3	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	11400000000	USD
CY2018Q4	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	11690000000	USD
CY2019Q3	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	7220000000	USD
CY2018Q4	us-gaap	Fair Value Of Securities Received As Collateral That Have Been Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatHaveBeenResoldOrRepledged	5310000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	5189000000	USD
CY2018Q4	stt	Derivative Collateral Obligationto Return Securitiesand Cash DerivativeCollateralObligationtoReturnSecuritiesandCash	220000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	4969000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowing Fair Value Gross Asset ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossAsset	116143000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Liability ReverseRepurchaseAgreementsAndSecuritiesBorrowedLiability	91889000000	USD
CY2019Q3	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	793000000	USD
CY2019Q3	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	793000000	USD
CY2019Q3	stt	Derivative Collateral Obligationto Return Securitiesand Cash DerivativeCollateralObligationtoReturnSecuritiesandCash	477000000	USD
CY2019Q3	stt	Derivative Collateral Obligationto Return Securitiesand Cash Netof Offset DerivativeCollateralObligationtoReturnSecuritiesandCashNetofOffset	1270000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	13934000000	USD
CY2019Q3	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	8894000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	5040000000	USD
CY2019Q3	stt	Derivative Collateral Obligationto Return Securitiesand Cash DerivativeCollateralObligationtoReturnSecuritiesandCash	477000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	4563000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowing Fair Value Gross Asset ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossAsset	155464000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Liability ReverseRepurchaseAgreementsAndSecuritiesBorrowedLiability	129754000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Fair Value Amount Not Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral	25710000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Collateral Obligation To Return Cash ReverseRepurchaseAgreementsAndSecuritiesBorrowedCollateralObligationToReturnCash	24595000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Amount Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedAmountOffsetAgainstCollateral	1115000000	USD
CY2019Q3	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross	169398000000	USD
CY2019Q3	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability	138648000000	USD
CY2019Q3	stt	Derivative Asset Reverse Repurchase Agreements And Securities Borrowed Not Offset Against Collateral DerivativeAssetReverseRepurchaseAgreementsAndSecuritiesBorrowedNotOffsetAgainstCollateral	30750000000	USD
CY2019Q3	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash	25072000000	USD
CY2019Q3	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral	5678000000	USD
CY2018Q4	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	987000000	USD
CY2018Q4	stt	Derivative Asset Collateral Obligationto Return Securitiesand Cash Offset DerivativeAssetCollateralObligationtoReturnSecuritiesandCashOffset	987000000	USD
CY2018Q4	stt	Derivative Collateral Obligationto Return Securitiesand Cash DerivativeCollateralObligationtoReturnSecuritiesandCash	220000000	USD
CY2018Q4	stt	Derivative Collateral Obligationto Return Securitiesand Cash Netof Offset DerivativeCollateralObligationtoReturnSecuritiesandCashNetofOffset	1207000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	16399000000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	11210000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Fair Value Amount Not Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral	24254000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Collateral Obligation To Return Cash ReverseRepurchaseAgreementsAndSecuritiesBorrowedCollateralObligationToReturnCash	22872000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Amount Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedAmountOffsetAgainstCollateral	1382000000	USD
CY2018Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross	132542000000	USD
CY2018Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability	103099000000	USD
CY2018Q4	stt	Derivative Asset Reverse Repurchase Agreements And Securities Borrowed Not Offset Against Collateral DerivativeAssetReverseRepurchaseAgreementsAndSecuritiesBorrowedNotOffsetAgainstCollateral	29443000000	USD
CY2018Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Cash DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash	23092000000	USD
CY2018Q4	us-gaap	Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral	6351000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Fair Value Amount Not Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral	25710000000	USD
CY2019Q3	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	3040000000.00	USD
CY2019Q3	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	22670000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Fair Value Amount Not Offset Against Collateral ReverseRepurchaseAgreementsAndSecuritiesBorrowedFairValueAmountNotOffsetAgainstCollateral	24250000000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	4680000000	USD
CY2018Q4	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	19580000000	USD
CY2019Q3	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1432000000	USD
CY2019Q3	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1432000000	USD
CY2019Q3	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash DerivativeCollateralRighttoReclaimSecuritiesandCash	796000000	USD
CY2019Q3	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash Netof Offset DerivativeCollateralRighttoReclaimSecuritiesandCashNetofOffset	2228000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	14447000000	USD
CY2019Q3	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	9533000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	4914000000	USD
CY2019Q3	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash DerivativeCollateralRighttoReclaimSecuritiesandCash	796000000	USD
CY2019Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	4118000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowing Fair Value Gross Liability ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossLiability	145522000000	USD
CY2019Q3	stt	Reverse Repurchase Agreements And Securities Borrowed Asset ReverseRepurchaseAgreementsAndSecuritiesBorrowedAsset	129754000000	USD
CY2019Q3	stt	Repurchase Agreements And Securities Lending Fair Value Amount Not Offset Against Collateral RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral	15768000000	USD
CY2019Q3	stt	Repurchase Agreements And Securities Loaned Collateral Right To Reclaim Cash RepurchaseAgreementsAndSecuritiesLoanedCollateralRightToReclaimCash	14453000000	USD
CY2019Q3	stt	Repurchase Agreements And Securities Loaned Amount Offset Against Collateral RepurchaseAgreementsAndSecuritiesLoanedAmountOffsetAgainstCollateral	1315000000	USD
CY2019Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	159969000000	USD
CY2019Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	139287000000	USD
CY2019Q3	stt	Derivative Liability Securities Sold Under Agreements To Resell And Securities Loaned Not Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellAndSecuritiesLoanedNotOffsetAgainstCollateral	20682000000	USD
CY2019Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	15249000000	USD
CY2019Q3	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	5433000000	USD
CY2018Q4	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1341000000	USD
CY2018Q4	stt	Derivative Liability Collateral Rightto Reclaim Securitiesand Cash Offset DerivativeLiabilityCollateralRighttoReclaimSecuritiesandCashOffset	1341000000	USD
CY2018Q4	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash DerivativeCollateralRighttoReclaimSecuritiesandCash	215000000	USD
CY2018Q4	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash Netof Offset DerivativeCollateralRighttoReclaimSecuritiesandCashNetofOffset	1556000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	16807000000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	11564000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	5243000000	USD
CY2018Q4	stt	Derivative Collateral Rightto Reclaim Securitiesand Cash DerivativeCollateralRighttoReclaimSecuritiesandCash	215000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	5028000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowing Fair Value Gross Liability ReverseRepurchaseAgreementsAndSecuritiesBorrowingFairValueGrossLiability	104494000000	USD
CY2018Q4	stt	Reverse Repurchase Agreements And Securities Borrowed Asset ReverseRepurchaseAgreementsAndSecuritiesBorrowedAsset	91889000000	USD
CY2018Q4	stt	Repurchase Agreements And Securities Lending Fair Value Amount Not Offset Against Collateral RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral	12605000000	USD
CY2018Q4	stt	Repurchase Agreements And Securities Loaned Collateral Right To Reclaim Cash RepurchaseAgreementsAndSecuritiesLoanedCollateralRightToReclaimCash	11543000000	USD
CY2018Q4	stt	Repurchase Agreements And Securities Loaned Amount Offset Against Collateral RepurchaseAgreementsAndSecuritiesLoanedAmountOffsetAgainstCollateral	1062000000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	121301000000	USD
	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated:</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:99.79035639412997%;border-collapse:collapse;text-align:left;"><tr><td colspan="8"/></tr><tr><td style="width:48%;"/><td style="width:1%;"/><td style="width:23%;"/><td style="width:1%;"/><td style="width:2%;"/><td style="width:1%;"/><td style="width:23%;"/><td style="width:1%;"/></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;">(In millions)</span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;">September 30, 2019</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;">December 31, 2018</span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;">Fair value of indemnified securities financing</span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;"><span>386,978</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;">$</span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;"><span>342,337</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;">Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;"><span>406,202</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;"><span>357,893</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;">Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements</span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;"><span>48,263</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;"><span>42,610</span></span></div></td><td style="vertical-align:bottom;background-color:#cceeff;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;">Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements</span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;font-weight:bold;"><span>51,717</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;"><div style="text-align:right;font-size:7.5pt;"><span style="font-family:Arial;font-size:7.5pt;"><span>45,064</span></span></div></td><td style="vertical-align:bottom;"><div style="text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div></td></tr></table></div><span style="font-family:Arial;font-size:10pt;"><br/></span></div>
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	103453000000	USD
CY2018Q4	stt	Derivative Liability Securities Sold Under Agreements To Resell And Securities Loaned Not Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellAndSecuritiesLoanedNotOffsetAgainstCollateral	17848000000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	11758000000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	6090000000	USD
CY2019Q3	stt	Repurchase Agreements And Securities Lending Fair Value Amount Not Offset Against Collateral RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral	15770000000	USD
CY2019Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	1330000000	USD
CY2018Q4	stt	Repurchase Agreements And Securities Lending Fair Value Amount Not Offset Against Collateral RepurchaseAgreementsAndSecuritiesLendingFairValueAmountNotOffsetAgainstCollateral	12600000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	1080000000.00	USD
CY2019Q3	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	126017000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	88904000000	USD
CY2019Q3	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	19505000000	USD
CY2018Q4	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	15590000000	USD
CY2019Q3	us-gaap	Securities Loaned And Securities Sold Under Agreement To Repurchase Gross Including Not Subject To Master Netting Arrangement SecuritiesLoanedAndSecuritiesSoldUnderAgreementToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	145522000000	USD
CY2018Q4	us-gaap	Securities Loaned And Securities Sold Under Agreement To Repurchase Gross Including Not Subject To Master Netting Arrangement SecuritiesLoanedAndSecuritiesSoldUnderAgreementToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	104494000000	USD
CY2019Q3	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	29681000000	USD
CY2018Q4	us-gaap	Unused Commitments To Extend Credit UnusedCommitmentsToExtendCredit	28951000000	USD
CY2019Q3	stt	Aggregate Fair Value Of Indemnified Securities On Loan AggregateFairValueOfIndemnifiedSecuritiesOnLoan	386978000000	USD
CY2018Q4	stt	Aggregate Fair Value Of Indemnified Securities On Loan AggregateFairValueOfIndemnifiedSecuritiesOnLoan	342337000000	USD
CY2019Q3	stt	Stand By Letters Of Credit StandByLettersOfCredit	3307000000	USD
CY2018Q4	stt	Stand By Letters Of Credit StandByLettersOfCredit	2985000000	USD
	stt	Unfunded Commitments To Extend Credit Short Term UnfundedCommitmentsToExtendCreditShortTerm	0.74
	stt	Unfunded Commitmentto Extend Credit Term UnfundedCommitmenttoExtendCreditTerm	P1Y
CY2019Q3	stt	Aggregate Fair Value Of Indemnified Securities On Loan AggregateFairValueOfIndemnifiedSecuritiesOnLoan	386978000000	USD
CY2018Q4	stt	Aggregate Fair Value Of Indemnified Securities On Loan AggregateFairValueOfIndemnifiedSecuritiesOnLoan	342337000000	USD
CY2019Q3	stt	Aggregate Fair Value Of Cash And Securities Held As Collateral For Indemnified Securities AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedSecurities	406202000000	USD
CY2018Q4	stt	Aggregate Fair Value Of Cash And Securities Held As Collateral For Indemnified Securities AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedSecurities	357893000000	USD
CY2019Q3	stt	Collateralfor Indemnified Securities Investedin Indemnified Repurchase Agreements CollateralforIndemnifiedSecuritiesInvestedinIndemnifiedRepurchaseAgreements	48263000000	USD
CY2018Q4	stt	Collateralfor Indemnified Securities Investedin Indemnified Repurchase Agreements CollateralforIndemnifiedSecuritiesInvestedinIndemnifiedRepurchaseAgreements	42610000000	USD
CY2019Q3	stt	Aggregate Fair Value Of Cash And Securities Held As Collateral For Indemnified Repurchase Agreements AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedRepurchaseAgreements	51717000000	USD
CY2018Q4	stt	Aggregate Fair Value Of Cash And Securities Held As Collateral For Indemnified Repurchase Agreements AggregateFairValueOfCashAndSecuritiesHeldAsCollateralForIndemnifiedRepurchaseAgreements	45064000000	USD
CY2019Q3	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	22670000000	USD
CY2018Q4	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	19580000000	USD
	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<span style="font-family:Arial;font-size:10pt;font-style:normal;font-weight:bold;text-decoration:none;">Contingencies</span><div style="line-height:120%;padding-top:4px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;color:#000000;font-style:italic;font-weight:bold;text-decoration:none;">Legal and Regulatory Matters</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">In the ordinary course of business, we and our subsidiaries are involved in disputes, litigation, and governmental or regulatory inquiries and investigations, both pending and threatened. These matters, if resolved adversely against us or settled, may result in monetary awards or payments, fines and penalties or require changes in our business practices. The resolution or settlement of these matters is inherently difficult to predict. Based on our assessment of these pending matters, we do not believe that the amount of any judgment, settlement or other action arising from any pending matter is likely to have a material adverse effect on our consolidated financial condition. However, an adverse outcome or development in certain of the matters described below could have a material adverse effect on our consolidated results of operations for the period in which such matter is resolved, or an accrual is determined to be required, on our consolidated financial condition, or on our reputation. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We evaluate our needs for accruals of loss contingencies related to legal and regulatory proceedings on a case-by-case basis. When we have a liability that we deem probable, and we deem the amount of such liability can be reasonably estimated as of the date of our consolidated financial statements, we accrue our estimate of the amount of loss. We also consider a loss probable and establish an accrual when we make, or intend to make, an offer of settlement. Once established, an accrual is subject to subsequent adjustment as a result of additional information. The resolution of legal and regulatory proceedings and the amount of reasonably estimable loss (or range thereof) are inherently difficult to predict, especially in the early stages of proceedings. Even if a loss is probable, an amount (or range) of loss might not be reasonably estimated until the later stages of the proceeding due to many factors such as the presence of complex or novel legal theories, the discretion of governmental authorities in seeking sanctions or negotiating resolutions in civil and criminal matters, the pace and timing of discovery and other assessments of facts and the procedural posture of the matter (collectively, "factors influencing reasonable estimates"). </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">As of </span><span style="font-family:Arial;font-size:10pt;">September 30, 2019</span><span style="font-family:Arial;font-size:10pt;">, our aggregate accruals for loss contingencies for legal and regulatory matters totaled approximately </span><span style="font-family:Arial;font-size:10pt;"><span>$7 million</span></span><span style="font-family:Arial;font-size:10pt;">. To the extent that we have established accruals in our consolidated statement of condition for probable loss contingencies, such accruals may not be sufficient to cover our ultimate financial exposure associated with any settlements or judgments. Any such ultimate financial exposure, or proceedings to which we may become subject in the future, could have a material adverse effect on our </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">businesses, on our future consolidated financial statements or on our reputation. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">As of </span><span style="font-family:Arial;font-size:10pt;">September 30, 2019</span><span style="font-family:Arial;font-size:10pt;">, for those matters for which we have accrued probable loss contingencies (including the Invoicing Matter described below) and for other matters for which loss is reasonably possible (but not probable) in future periods, and for which we are able to estimate a range of reasonably possible loss, our estimate of the aggregate reasonably possible loss (in excess of any accrued amounts) ranges up to approximately </span><span style="font-family:Arial;font-size:10pt;"><span>$300 million</span></span><span style="font-family:Arial;font-size:10pt;">. Our estimate with respect to the aggregate reasonably possible loss is based upon currently available information and is subject to significant judgment and a variety of assumptions and known and unknown uncertainties, which may change quickly and significantly from time to time, particularly if and as we engage with applicable governmental agencies or plaintiffs in connection with a proceeding. Also, the matters underlying the reasonably possible loss will change from time to time. As a result, actual results may vary significantly from the current estimate.</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">In certain pending matters, it is not currently feasible to reasonably estimate the amount or a range of reasonably possible loss, and such losses, which may be significant, are not included in the estimate of reasonably possible loss discussed above. This is due to, among other factors, the factors influencing reasonable estimates described above. An adverse outcome in one or more of the matters for which we have not estimated the amount or a range of reasonably possible loss, individually or in the aggregate, could have a material adverse effect on our businesses, on our future consolidated financial statements or on our reputation. Given that our actual losses from any legal or regulatory proceeding for which we have provided an estimate of the reasonably possible loss could significantly exceed such estimate, and given that we cannot estimate reasonably possible loss for all legal and regulatory proceedings as to which we may be subject now or in the future, no conclusion as to our ultimate exposure from current pending or potential legal or regulatory proceedings should be drawn from the current estimate of reasonably possible loss. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The following discussion provides information with respect to significant legal, governmental and regulatory matters. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:normal;text-decoration:none;">Invoicing Matter</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">In 2015, we determined that we had incorrectly invoiced clients for certain expenses. We have reimbursed most of our affected customers for those expenses, and we have implemented enhancements to our billing processes. In connection with our enhancements to our billing processes, we continue to review historical billing practices and may from time to time identify additional remediation. In 2017, we identified an additional area of incorrect expense billing </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">associated with mailing services in our retirement services business. We currently expect the cumulative total of our payments to customers for these invoicing errors, including the error in the retirement services business, to be at least </span><span style="font-family:Arial;font-size:10pt;"><span>$380 million</span></span><span style="font-family:Arial;font-size:10pt;">, all of which has been paid or is accrued. However, we may identify additional remediation costs.</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">In March 2017, a purported class action was commenced against us alleging that our invoicing practices violated duties owed to retirement plan customers under the Employee Retirement Income Security Act. In addition, we have received a purported class action demand letter alleging that our invoicing practices were unfair and deceptive under Massachusetts law. A class of customers, or particular customers, may assert that we have not paid to them all amounts incorrectly invoiced, and may seek double or treble damages under Massachusetts law. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We are also cooperating with investigations by governmental and regulatory authorities on these matters, including the civil and criminal divisions of the DOJ and the Department of Labor, which could result in significant fines or other sanctions, civil and criminal, against us. If these governmental or regulatory authorities were to conclude that all or a portion of the billing errors merited civil or criminal sanctions, any fine or other penalty could be a significant percentage, or a multiple of, the portion of the overcharging serving as the basis of such a claim or of the full amount overcharged. The governmental and regulatory authorities have significant discretion in civil and criminal matters as to the fines and other penalties they may seek to impose. The severity of such fines or other penalties could take into account factors such as the amount and duration of our incorrect invoicing, the government’s or regulator's assessment of the conduct of our employees, as well as prior conduct such as that which resulted in our January 2017 deferred prosecution agreement in connection with transition management services and our settlement of civil claims regarding our indirect FX business. In June 2019, we reached an agreement with the SEC to settle its claims that we violated the recordkeeping provisions of Section 34(b) of the Investment Company Act of 1940 and caused violations of Section 31(a) of the Investment Company Act and Rules 31a-1(a) and 31a-1(b) thereunder in connection with our overcharges of customers which are registered investment companies. In reaching this settlement, we neither admitted nor denied the claims contained in the SEC’s order, and agreed to pay a civil monetary penalty of </span><span style="font-family:Arial;font-size:10pt;"><span>$40 million</span></span><span style="font-family:Arial;font-size:10pt;">. Also in June 2019, we reached an agreement with the Massachusetts Attorney General’s office to resolve its claims related to this matter, and agreed to pay a civil monetary penalty of </span><span style="font-family:Arial;font-size:10pt;"><span>$5.5 million</span></span><span style="font-family:Arial;font-size:10pt;">. The costs associated with these settlements were within our related previously established accruals for loss contingencies. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The SEC and Massachusetts Attorney General’s office settlements both recognize that the payment of </span><span style="font-family:Arial;font-size:10pt;"><span>$48.8 million</span></span><span style="font-family:Arial;font-size:10pt;"> in disgorgement and interest is satisfied by State Street’s direct reimbursements of its customers. It is possible that discussions will commence in 2019 with the DOJ regarding a potential resolution of their investigation regarding this matter, which will then enable us to better assess the potential penalties and/or other sanctions they will be seeking. There can be no assurance that any settlement, whether with the DOJ or the Department of Labor, will be reached or, if so, the amount of the settlement or its impact on other claims relating to these matters. The aggregate amount of penalties that may potentially be imposed upon us in connection with the resolution of all outstanding investigations into our historical billing practices could be significant multiples of the settlement, including recognized reimbursed amounts, that we have reached with the SEC.</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">The outcome of any of these proceedings and, in particular, any criminal sanction could materially adversely affect our results of operations and could have significant collateral consequences for our business and reputation. </span></div><div style="line-height:120%;padding-top:6px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:normal;text-decoration:none;">Federal Reserve/Massachusetts Division of Banks Written Agreement</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">On June 1, 2015, we entered into a written agreement with the Federal Reserve and the Massachusetts Division of Banks relating to deficiencies identified in our compliance programs with the requirements of the Bank Secrecy Act, Anti-Money Laundering regulations and U.S. economic sanctions regulations promulgated by the Office of Foreign Assets Control. As part of this enforcement action, we have been required to, among other things, implement improvements to our compliance programs. If we fail to comply with the terms of the written agreement, we may become subject to fines and other regulatory sanctions, which may have a material adverse effect on us.</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;font-style:italic;font-weight:normal;text-decoration:none;">Shareholder Litigation</span></div><div style="line-height:120%;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">A shareholder of ours has filed a derivative complaint against the Company’s past and present officers and directors to recover alleged losses incurred by the Company relating to the invoicing matter and to the Ohio public retirement plans matter.</span></div><div style="line-height:120%;padding-top:4px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;color:#000000;font-style:italic;font-weight:bold;text-decoration:none;">Income Taxes</span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">In determining our provision for income taxes, we make certain judgments and interpretations with respect to tax laws in jurisdictions in which we have business operations. Because of the complex nature of these laws, in the normal course of our business, we are subject to challenges from U.S. and non-U.S. income tax authorities regarding the amount of income taxes due. These challenges may result in adjustments to the timing or amount of taxable income or deductions or the allocation of taxable income among tax </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">jurisdictions. We recognize a tax benefit when it is more likely than not that our position will result in a tax deduction or credit. Unrecognized tax benefits of approximately </span><span style="font-family:Arial;font-size:10pt;"><span>$101 million</span></span><span style="font-family:Arial;font-size:10pt;"> as of </span><span style="font-family:Arial;font-size:10pt;">September 30, 2019</span><span style="font-family:Arial;font-size:10pt;"> decreased from </span><span style="font-family:Arial;font-size:10pt;"><span>$108 million</span></span><span style="font-family:Arial;font-size:10pt;"> as of </span><span style="font-family:Arial;font-size:10pt;">December 31, 2018</span><span style="font-family:Arial;font-size:10pt;">. </span></div><div style="line-height:120%;padding-top:4px;text-align:justify;text-indent:30px;font-size:10pt;"><span style="font-family:Arial;font-size:10pt;">We are presently under audit by a number of tax authorities, and the Internal Revenue Service is currently reviewing our U.S. income tax returns for the tax years 2014 and 2015. The earliest tax year open to examination in jurisdictions where we have material operations is 2012. Management believes that we have sufficiently accrued liabilities as of </span><span style="font-family:Arial;font-size:10pt;">September 30, 2019</span><span style="font-family:Arial;font-size:10pt;"> for potential tax exposures.</span></div>
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CY2019Q3	stt	Lease Liability Undiscounted Excess Amount LeaseLiabilityUndiscountedExcessAmount	129000000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	977000000	USD
CY2019Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	144000000	USD
CY2019Q3	stt	Lease Liability LeaseLiability	1121000000	USD
CY2019Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2019Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.07
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.03
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	583000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	764000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1678000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	2156000000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	55000000	USD
CY2018Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	55000000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	160000000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	146000000	USD
CY2019Q3	stt	Dividends And Undistributed Earnings Allocated To Participating Securities DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities	0	USD
CY2018Q3	stt	Dividends And Undistributed Earnings Allocated To Participating Securities DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities	1000000	USD
	stt	Dividends And Undistributed Earnings Allocated To Participating Securities DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities	1000000	USD
	stt	Dividends And Undistributed Earnings Allocated To Participating Securities DividendsAndUndistributedEarningsAllocatedToParticipatingSecurities	2000000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	528000000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	708000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1517000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2008000000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	366732000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	374963000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	372766000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	369368000	shares
CY2019Q3	stt	Stock Options And Stock Awards StockOptionsAndStockAwards	3863000	shares
CY2018Q3	stt	Stock Options And Stock Awards StockOptionsAndStockAwards	4420000	shares
	stt	Stock Options And Stock Awards StockOptionsAndStockAwards	3595000	shares
	stt	Stock Options And Stock Awards StockOptionsAndStockAwards	4696000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	370595000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	379383000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	376361000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	374064000	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3037000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1360000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2559000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	871000	shares
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.89
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.44
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.42
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.37
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	line_of_business
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	line_of_business
CY2019Q3	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	1272000000	USD
CY2018Q3	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	1333000000	USD
CY2019Q3	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	445000000	USD
CY2018Q3	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	474000000	USD
CY2019Q3	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	284000000	USD
CY2018Q3	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	288000000	USD
CY2019Q3	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	116000000	USD
CY2018Q3	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	128000000	USD
CY2019Q3	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	142000000	USD
CY2018Q3	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	95000000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	2259000000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	2318000000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	644000000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	672000000	USD
CY2019Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	0	USD
CY2018Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1000000	USD
CY2019Q3	us-gaap	Revenues Revenues	2903000000	USD
CY2018Q3	us-gaap	Revenues Revenues	2989000000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	2000000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5000000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	2180000000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	2091000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	721000000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	893000000	USD
CY2019Q3	stt	Pre Tax Margin PreTaxMargin	0.25
CY2018Q3	stt	Pre Tax Margin PreTaxMargin	0.30
	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	3775000000	USD
	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	4135000000	USD
	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	1306000000	USD
	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	1411000000	USD
	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	837000000	USD
	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	907000000	USD
	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	360000000	USD
	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	423000000	USD
	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	501000000	USD
	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	252000000	USD
	us-gaap	Noninterest Income NoninterestIncome	6779000000	USD
	us-gaap	Noninterest Income NoninterestIncome	7128000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1930000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1974000000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1000000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	6000000	USD
	us-gaap	Revenues Revenues	8708000000	USD
	us-gaap	Revenues Revenues	9108000000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7000000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	7000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	6627000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	6529000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2074000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2572000000	USD
	stt	Pre Tax Margin PreTaxMargin	0.24
	stt	Pre Tax Margin PreTaxMargin	0.28
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	line_of_business
CY2019Q3	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	1272000000	USD
CY2019Q3	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	445000000	USD
CY2019Q3	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	284000000	USD
CY2019Q3	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	116000000	USD
CY2019Q3	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	142000000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	2259000000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	644000000	USD
CY2019Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	0	USD
CY2019Q3	us-gaap	Revenues Revenues	2903000000	USD
CY2018Q3	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	1333000000	USD
CY2018Q3	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	474000000	USD
CY2018Q3	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	288000000	USD
CY2018Q3	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	128000000	USD
CY2018Q3	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	95000000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	2318000000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	672000000	USD
CY2018Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1000000	USD
CY2018Q3	us-gaap	Revenues Revenues	2989000000	USD
	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	3775000000	USD
	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	1306000000	USD
	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	837000000	USD
	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	360000000	USD
	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	501000000	USD
	us-gaap	Noninterest Income NoninterestIncome	6779000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1930000000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1000000	USD
	us-gaap	Revenues Revenues	8708000000	USD
	stt	Fees And Commissions Servicing Fees FeesAndCommissionsServicingFees	4135000000	USD
	stt	Fees And Commissions Management Fees FeesAndCommissionsManagementFees	1411000000	USD
	stt	Fees And Commissions Foreign Exchange Trading Services FeesAndCommissionsForeignExchangeTradingServices	907000000	USD
	stt	Fees And Commissions Securities Finance FeesAndCommissionsSecuritiesFinance	423000000	USD
	stt	Fees And Commissions Processing Fees And Other FeesAndCommissionsProcessingFeesAndOther	252000000	USD
	us-gaap	Noninterest Income NoninterestIncome	7128000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1974000000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	6000000	USD
	us-gaap	Revenues Revenues	9108000000	USD
CY2019Q3	us-gaap	Revenues Revenues	2903000000	USD
CY2018Q3	us-gaap	Revenues Revenues	2989000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	721000000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	893000000	USD
	us-gaap	Revenues Revenues	8708000000	USD
	us-gaap	Revenues Revenues	9108000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2074000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2572000000	USD

Files In Submission

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$STT
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2019 Q4 Form 10-Q Financial Statement

#000009375119000595 Filed on October 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STT State Street Corp Stock $stt

2019 Q4 Form 10-Q Financial Statement

#000009375119000595 Filed on October 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$STT
State Street Corp Stock $stt