$NTRS
NORTHERN TRUST CORP Stock $ntrs

$ntrs Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000119312515065963 Filed on February 26, 2015

Income Statement

Concept	2013 Q4	2012 Q4	2012
Revenue	$1.070B	$1.038B	$3.896B
YoY Change	3.1%	-0.1%	3.35%
Cost Of Revenue	$24.60M	$67.90M	$297.4M
YoY Change	-63.77%	-18.09%	-25.56%
Gross Profit	$1.045B	$969.7M	$3.896B
YoY Change	7.79%	1.46%	3.35%
Gross Profit Margin	97.7%	93.46%	100.0%
Selling, General & Admin	$543.7M	$512.6M	$2.067B
YoY Change	6.07%	1.18%	1.59%
% of Gross Profit	52.02%	52.86%	53.05%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$81.00M	$74.00M	$289.4M
YoY Change	9.46%	8.03%	9.17%
% of Gross Profit	7.75%	7.63%	7.43%
Operating Expenses	$799.5M	$736.3M	$2.904B
YoY Change	8.58%	1.66%	0.61%
Operating Profit	$245.7M	$233.4M	$992.3M
YoY Change	5.27%	0.86%	12.29%
Interest Expense			$297.4M
YoY Change			-25.56%
% of Operating Profit			29.97%
Other Income/Expense, Net		$0.00
YoY Change		-100.0%
Pretax Income	$245.7M	$223.2M	$992.3M
YoY Change	10.08%	30.22%	12.29%
Income Tax	$76.00M	$55.50M	$305.0M
% Of Pretax Income	30.93%	24.87%	30.74%
Net Earnings	$169.7M	$167.7M	$687.3M
YoY Change	1.19%	28.8%	13.87%
Net Earnings / Revenue	15.86%	16.16%	17.64%
Basic Earnings Per Share			$2.82
Diluted Earnings Per Share	$708.0K	$699.0K	$2.81
COMMON SHARES
Basic Shares Outstanding			240.4M shares
Diluted Shares Outstanding			240.9M shares

Balance Sheet

Concept	2013 Q4	2012 Q4	2012
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.162B	$3.753B	$3.753B
YoY Change	-15.75%	-13.02%	-13.02%
Cash & Equivalents
Short-Term Investments	$30.72B	$31.03B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$3.162B	$3.753B	$3.753B
YoY Change	-15.75%	-13.02%	-13.02%
LONG-TERM ASSETS
Property, Plant & Equipment	$458.8M	$469.9M	$470.0M
YoY Change	-2.36%	-4.97%	-5.05%
Goodwill	$540.7M	$537.8M
YoY Change	0.54%	1.09%
Intangibles
YoY Change
Long-Term Investments	$63.56B	$31.03B	$31.03B
YoY Change	104.8%	0.11%	0.11%
Other Assets
YoY Change
Total Long-Term Assets	$99.79B	$93.71B	$93.71B
YoY Change	6.48%	-2.29%	-2.29%
TOTAL ASSETS
Total Short-Term Assets	$3.162B	$3.753B	$3.753B
Total Long-Term Assets	$99.79B	$93.71B	$93.71B
Total Assets	$102.9B	$97.46B	$97.46B
YoY Change	5.63%	-2.75%	-2.75%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$85.98B	$82.89B	$82.89B
YoY Change	3.73%	-2.13%	-3.33%
Long-Term Debt Due	$1.559B	$367.0M	$367.0M
YoY Change	324.8%	-60.62%	-60.62%
Total Short-Term Liabilities	$87.54B	$83.26B	$83.26B
YoY Change	5.15%	-2.77%	-3.95%
LONG-TERM LIABILITIES
Long-Term Debt	$3.983B	$4.104B	$4.104B
YoY Change	-2.95%	-9.54%	17.86%
Other Long-Term Liabilities	$3.513B	$2.577B	$2.577B
YoY Change	36.32%	-12.53%	-12.53%
Total Long-Term Liabilities	$7.496B	$6.681B	$6.681B
YoY Change	12.2%	-10.72%	3.94%
TOTAL LIABILITIES
Total Short-Term Liabilities	$87.54B	$83.26B	$83.26B
Total Long-Term Liabilities	$7.496B	$6.681B	$6.681B
Total Liabilities	$95.04B	$89.94B	$89.94B
YoY Change	5.67%	-3.4%	-3.4%
SHAREHOLDERS EQUITY
Retained Earnings	$7.135B	$6.703B
YoY Change	6.45%	6.35%
Common Stock	$1.444B	$1.421B
YoY Change	1.62%	2.54%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$422.8M	$314.0M
YoY Change	34.65%	39.25%
Treasury Stock Shares	7.849M shares	6.257M shares
Shareholders Equity	$7.912B	$7.527B	$7.527B
YoY Change
Total Liabilities & Shareholders Equity	$102.9B	$97.46B	$97.46B
YoY Change	5.63%	-2.75%	-2.75%

Cashflow Statement

Concept	2013 Q4	2012 Q4	2012
OPERATING ACTIVITIES
Net Income	$169.7M	$167.7M	$687.3M
YoY Change	1.19%	28.8%	13.87%
Depreciation, Depletion And Amortization	$81.00M	$74.00M	$289.4M
YoY Change	9.46%	8.03%	9.17%
Cash From Operating Activities	-$121.6M	$23.20M	$814.4M
YoY Change	-624.14%	-98.33%	-35.07%
INVESTING ACTIVITIES
Capital Expenditures	-$137.3M	-$135.2M	$73.30M
YoY Change	1.55%	40.54%	-24.36%
Acquisitions
YoY Change
Other Investing Activities	-$6.056B	-$3.570B	$161.2M
YoY Change	69.63%	-44.01%	-199.02%
Cash From Investing Activities	-$6.193B	-$3.705B	$1.628B
YoY Change	67.15%	-42.75%	-110.58%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$162.4M
YoY Change			105.57%
Debt Paid & Issued, Net			$923.7M
YoY Change			4.88%
Cash From Financing Activities	6.814B	3.979B	-3.073B
YoY Change	71.27%	-22.83%	-119.44%
NET CHANGE
Cash From Operating Activities	-121.6M	23.20M	814.4M
Cash From Investing Activities	-6.193B	-3.705B	1.628B
Cash From Financing Activities	6.814B	3.979B	-3.073B
Net Change In Cash	499.2M	296.5M	-630.9M
YoY Change	68.36%	297.45%	-137.79%
FREE CASH FLOW
Cash From Operating Activities	-$121.6M	$23.20M	$814.4M
Capital Expenditures	-$137.3M	-$135.2M	$73.30M
Free Cash Flow	$15.70M	$158.4M	$741.1M
YoY Change	-90.09%	-89.35%	-35.97%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2013Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	198200000
CY2013Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1257000000
CY2013Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	26100000
CY2013Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1011200000
CY2013Q4	us-gaap	Leveraged Leases Net Investment In Leveraged Leases Disclosure Investment In Leveraged Leases Net LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet	671200000
CY2013Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	29385500000
CY2013Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	274700000
CY2013Q4	ntrs	Loans And Leases Receivable Residential Real Estate LoansAndLeasesReceivableResidentialRealEstate	10300000000
CY2013Q4	ntrs	Residential Real Estate Loans Percentage Of Total United States Loans ResidentialRealEstateLoansPercentageOfTotalUnitedStatesLoans	0.36	pure
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	145800000
CY2013Q4	ntrs	Cash Collateral Deposited With Not Offset Against Derivative Liabilities CashCollateralDepositedWithNotOffsetAgainstDerivativeLiabilities	39300000
CY2013Q4	ntrs	Earnings Of Certain Non United States Subsidiaries Indefinitely Reinvested EarningsOfCertainNonUnitedStatesSubsidiariesIndefinitelyReinvested	141000000
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Aggregate Losses SecuritiesContinuousUnrealizedLossPositionAggregateLosses	180400000
CY2013Q4	ntrs	Credit Risk Related Contingent Features Collateral Threshold CreditRiskRelatedContingentFeaturesCollateralThreshold	60300000
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	776100000
CY2013Q4	ntrs	Derivative Assets Reduced For Master Netting Agreements DerivativeAssetsReducedForMasterNettingAgreements	1200000000
CY2013Q4	ntrs	Securities Held As Collateral At Cost SecuritiesHeldAsCollateralAtCost	27600000
CY2013Q4	ntrs	Credit Risk To Banks CreditRiskToBanks	19900000000
CY2013Q4	ntrs	Loans Receivable Overdraft Advances LoansReceivableOverdraftAdvances	1300000000
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	9473900000
CY2013Q4	ntrs	Loans And Leases Receivable Commitment To Lend LoansAndLeasesReceivableCommitmentToLend	3400000
CY2013Q4	ntrs	Loans And Leases Receivable Allowance For Losses LoansAndLeasesReceivableAllowanceForLosses	307900000
CY2013Q4	ntrs	Derivative Liabilities Reduced For Master Netting Agreements DerivativeLiabilitiesReducedForMasterNettingAgreements	1200000000
CY2013Q4	ntrs	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	63300000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Retail LoansReceivableCommercialRealEstateCommercialMortgageRetail	768000000
CY2013Q4	ntrs	Commitments To Extend Credit CommitmentsToExtendCredit	1700000000
CY2013Q4	ntrs	Credit Risk To Banks Non Interest Bearing Balances Held At Banks CreditRiskToBanksNonInterestBearingBalancesHeldAtBanks	3000000000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Single Family Investment LoansReceivableCommercialRealEstateSingleFamilyInvestment	110000000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Apartments And Multi Family LoansReceivableCommercialRealEstateCommercialMortgageApartmentsAndMultiFamily	616200000
CY2013Q4	ntrs	Deferred Tax Liabilities Compensation And Benefits DeferredTaxLiabilitiesCompensationAndBenefits	112200000
CY2013Q4	ntrs	Other Assets Excluding Derivatives And Non Financial Instruments OtherAssetsExcludingDerivativesAndNonFinancialInstruments	3029400000
CY2013Q4	ntrs	Unfunded Commitments And Standby Letters Of Credit Allowance UnfundedCommitmentsAndStandbyLettersOfCreditAllowance	29800000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Other LoansReceivableCommercialRealEstateCommercialMortgageOther	110600000
CY2013Q4	ntrs	Estimated Credit Exposure From Clearing Activities EstimatedCreditExposureFromClearingActivities	73000000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Industrial And Warehouse LoansReceivableCommercialRealEstateCommercialMortgageIndustrialAndWarehouse	318600000
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAggregateLosses	34600000
CY2013Q4	ntrs	Long Term Debt Qualifying As Risk Based Capital LongTermDebtQualifyingAsRiskBasedCapital	1158700000
CY2013Q4	ntrs	Other Liabilities Excluding Derivatives And Non Financial Instruments OtherLiabilitiesExcludingDerivativesAndNonFinancialInstruments	2338400000
CY2013Q4	ntrs	Cash Collateral Received From Not Offset Against Derivative Assets CashCollateralReceivedFromNotOffsetAgainstDerivativeAssets	36400000
CY2013Q4	ntrs	Securities Continuous Unrealized Loss Position Fair Value SecuritiesContinuousUnrealizedLossPositionFairValue	10250000000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Office LoansReceivableCommercialRealEstateCommercialMortgageOffice	686000000
CY2013Q4	ntrs	Client Security Settlement Receivables ClientSecuritySettlementReceivables	1355200000
CY2013Q4	ntrs	Loans Receivable Commercial Real Estate Other LoansReceivableCommercialRealEstateOther	92200000
CY2013Q4	ntrs	Loans Receivable Commercial Construction Acquisition And Development LoansReceivableCommercialConstructionAcquisitionAndDevelopment	254200000
CY2013Q4	ntrs	Overdrawn Demand Deposit Accounts OverdrawnDemandDepositAccounts	104100000
CY2013Q4	ntrs	Trust Preferred Securities TrustPreferredSecurities	277100000
CY2014Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	233390705	shares
CY2014Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	560000000	shares
CY2014Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	7100000	shares
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	11780819	shares
CY2014Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	16000	shares
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	2028560	shares
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	13.60
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.6667
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2014Q4	us-gaap	Time Deposits TimeDeposits	1757400000
CY2014Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	1615100000
CY2014Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	6600000
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3900000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	31800000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	8200000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	8000000
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	617000000
CY2014Q4	us-gaap	Senior Notes SeniorNotes	1497000000
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue	388500000
CY2014Q4	us-gaap	Other Liabilities OtherLiabilities	3848100000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	291400000
CY2014Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	287700000
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	24100000
CY2014Q4	us-gaap	Collateral Securities Repledged Delivered Or Used CollateralSecuritiesRepledgedDeliveredOrUsed	0
CY2014Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	31800000
CY2014Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	8800000
CY2014Q4	us-gaap	Other Borrowings OtherBorrowings	1685200000
CY2014Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	10200000
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	1200000000
CY2014Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	388600000
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	157500000
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	408600000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	8700000
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-319700000
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7625400000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	70500000
CY2014Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	26400000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	8300000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	8448900000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	680600000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	61800000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	80200000
CY2014Q4	us-gaap	Noninterest Bearing Deposit Liabilities Foreign NoninterestBearingDepositLiabilitiesForeign	2723200000
CY2014Q4	us-gaap	Leveraged Leases Net Investment In Leveraged Leases Disclosure Deferred Income LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredIncome	151600000
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	109946500000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	129500000
CY2014Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	299500000
CY2014Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	255000000
CY2014Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1012100000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	39900000
CY2014Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1050900000
CY2014Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	1100000000
CY2014Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	22815000000
CY2014Q4	us-gaap	Interest Bearing Deposit Liabilities Foreign InterestBearingDepositLiabilitiesForeign	47545000000
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	260400000
CY2014Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	932900000
CY2014Q4	us-gaap	Deferred Compensation Arrangement With Individual Cash Award Granted Amount DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount	212400000
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11900000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	86000000
CY2014Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	267000000
CY2014Q4	us-gaap	Liabilities Liabilities	101497600000
CY2014Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	15916400000
CY2014Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	316100000
CY2014Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Deferred Income CapitalLeasesNetInvestmentInDirectFinancingLeasesDeferredIncome	39100000
CY2014Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	110900000
CY2014Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	885100000
CY2014Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	3900000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	90700000
CY2014Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	6600000
CY2014Q4	us-gaap	Deposits Deposits	90757000000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	8400000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	-1700000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	8100000
CY2014Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Minimum Payments To Be Received CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived	195400000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8100000
CY2014Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Unguaranteed Residual Values Of Leased Property CapitalLeasesNetInvestmentInDirectFinancingLeasesUnguaranteedResidualValuesOfLeasedProperty	208800000
CY2014Q4	us-gaap	Goodwill Goodwill	533200000
CY2014Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	4176100000
CY2014Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	242200000
CY2014Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	14928300000
CY2014Q4	us-gaap	Marketable Securities MarketableSecurities	33734000000
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	444300000
CY2014Q4	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	1000000000
CY2014Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	29514100000
CY2014Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	29558500000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Four Years CapitalLeasesFutureMinimumPaymentsReceivableInFourYears	29800000
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	230200000
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	315800000
CY2014Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	242200000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	41000000
CY2014Q4	us-gaap	Loans Held For Sale Mortgages LoansHeldForSaleMortgages	2500000
CY2014Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	31373200000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	3394200000
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	126700000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	60000000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	2602800000
CY2014Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	5200000
CY2014Q4	us-gaap	Trading Securities TradingSecurities	4700000
CY2014Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	66500000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Five Years CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears	17900000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	7900000
CY2014Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	21100000
CY2014Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	916300000
CY2014Q4	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	14353600000
CY2014Q4	us-gaap	Other Assets OtherAssets	5865100000
CY2014Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	16600000
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1061300000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	7467400000
CY2014Q4	us-gaap	Cost Method Investments CostMethodInvestments	0
CY2014Q4	us-gaap	Leveraged Leases Net Investment In Leveraged Leases Disclosure Residual Value Of Leased Assets LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureResidualValueOfLeasedAssets	285600000
CY2014Q4	us-gaap	Leveraged Leases Net Investment In Leveraged Leases Disclosure Rental Receivables Net LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureRentalReceivablesNet	413600000
CY2014Q4	us-gaap	Loans Receivable Commercial Mortgage LoansReceivableCommercialMortgage	2767700000
CY2014Q4	us-gaap	Loss Contingency Range Of Possible Loss Maximum LossContingencyRangeOfPossibleLossMaximum	130000000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	24000000
CY2014Q4	us-gaap	Assets Assets	109946500000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	17157600000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1495000000
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-785800000
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	226300000
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	103500000
CY2014Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	112600000
CY2014Q4	us-gaap	Federal Funds Sold FederalFundsSold	62700000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	8800000
CY2014Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	301000000
CY2014Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3333300000
CY2014Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	3900000
CY2014Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	1000000000
CY2014Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	29514100000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	3418000000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1519800000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Current CapitalLeasesFutureMinimumPaymentsReceivableCurrent	48400000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Three Years CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears	37600000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Two Years CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears	40400000
CY2014Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases Initial Direct Costs CapitalLeasesNetInvestmentInDirectFinancingLeasesInitialDirectCosts	3600000
CY2014Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3050600000
CY2014Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	272900000
CY2014Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	1062700000
CY2014Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	17386300000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	11300000
CY2014Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	4170800000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	21500000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	23500000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	1503500000
CY2014Q4	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	17286600000
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	704800000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	7487900000
CY2014Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	29558500000
CY2014Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	17132700000
CY2014Q4	us-gaap	Capital Leases Net Investment In Direct Financing Leases CapitalLeasesNetInvestmentInDirectFinancingLeases	368700000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	8700000
CY2014Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	31398000000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	189500000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2622300000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	27600000
CY2014Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1504700000
CY2014Q4	us-gaap	Leveraged Leases Net Investment In Leveraged Leases Disclosure Investment In Leveraged Leases Net LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet	547600000
CY2014Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	31640200000
CY2014Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	232300000
CY2014Q4	us-gaap	Security Owned And Pledged As Collateral Fair Value SecurityOwnedAndPledgedAsCollateralFairValue	32300000000
CY2014Q4	ntrs	Loans And Leases Receivable Residential Real Estate LoansAndLeasesReceivableResidentialRealEstate	9800000000
CY2014Q4	ntrs	Residential Real Estate Loans Percentage Of Total United States Loans ResidentialRealEstateLoansPercentageOfTotalUnitedStatesLoans	0.32	pure
CY2014Q4	ntrs	Percentage Of Capital Surplus PercentageOfCapitalSurplus	0.10	pure
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAggregateLosses	26500000
CY2014Q4	ntrs	Cash Collateral Deposited With Not Offset Against Derivative Liabilities CashCollateralDepositedWithNotOffsetAgainstDerivativeLiabilities	153200000
CY2014Q4	ntrs	Earnings Of Certain Non United States Subsidiaries Indefinitely Reinvested EarningsOfCertainNonUnitedStatesSubsidiariesIndefinitelyReinvested	177400000
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Aggregate Losses SecuritiesContinuousUnrealizedLossPositionAggregateLosses	87600000
CY2014Q4	ntrs	Credit Risk Related Contingent Features Collateral Threshold CreditRiskRelatedContingentFeaturesCollateralThreshold	26600000
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	3309100000
CY2014Q4	ntrs	Derivative Assets Reduced For Master Netting Agreements DerivativeAssetsReducedForMasterNettingAgreements	1900000000
CY2014Q4	ntrs	Percentage Of Aggregate Transfer Of Capital And Surplus By Banking Subsidiaries PercentageOfAggregateTransferOfCapitalAndSurplusByBankingSubsidiaries	0.20	pure
CY2014Q4	ntrs	Securities Held As Collateral At Cost SecuritiesHeldAsCollateralAtCost	27400000
CY2014Q4	ntrs	Credit Risk To Banks CreditRiskToBanks	16000000000
CY2014Q4	ntrs	Loans Receivable Overdraft Advances LoansReceivableOverdraftAdvances	1500000000
CY2014Q4	ntrs	Operating Leases Future Minimum Payments Due Net Of Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueNetOfFutureMinimumSubleaseRentals	656600000
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value SecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	7101700000
CY2014Q4	ntrs	Loans And Leases Receivable Commitment To Lend LoansAndLeasesReceivableCommitmentToLend	2400000
CY2014Q4	ntrs	Securities Lending Related Collateral Maintenance SecuritiesLendingRelatedCollateralMaintenance	1.00	pure
CY2014Q4	ntrs	Loans And Leases Receivable Allowance For Losses LoansAndLeasesReceivableAllowanceForLosses	295900000
CY2014Q4	ntrs	Derivative Liabilities Reduced For Master Netting Agreements DerivativeLiabilitiesReducedForMasterNettingAgreements	1900000000
CY2014Q4	ntrs	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	62300000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Retail LoansReceivableCommercialRealEstateCommercialMortgageRetail	854100000
CY2014Q4	ntrs	Smaller Homogeneous Loan Threshold SmallerHomogeneousLoanThreshold	250000
CY2014Q4	ntrs	Percentage Of Proceeds In Excess Of Original Project Costs To Be Received PercentageOfProceedsInExcessOfOriginalProjectCostsToBeReceived	0.42	pure
CY2014Q4	ntrs	Upper Limit Of Generally Required Loan To Collateral Value For Residential Real Estate Loans UpperLimitOfGenerallyRequiredLoanToCollateralValueForResidentialRealEstateLoans	0.80	pure
CY2014Q4	ntrs	Commitments To Extend Credit CommitmentsToExtendCredit	1600000000
CY2014Q4	ntrs	Credit Risk To Banks Non Interest Bearing Balances Held At Banks CreditRiskToBanksNonInterestBearingBalancesHeldAtBanks	1100000000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Single Family Investment LoansReceivableCommercialRealEstateSingleFamilyInvestment	121300000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Apartments And Multi Family LoansReceivableCommercialRealEstateCommercialMortgageApartmentsAndMultiFamily	728700000
CY2014Q4	ntrs	Deferred Tax Liabilities Compensation And Benefits DeferredTaxLiabilitiesCompensationAndBenefits	63500000
CY2014Q4	ntrs	Other Assets Excluding Derivatives And Non Financial Instruments OtherAssetsExcludingDerivativesAndNonFinancialInstruments	3614700000
CY2014Q4	ntrs	Unfunded Commitments And Standby Letters Of Credit Allowance UnfundedCommitmentsAndStandbyLettersOfCreditAllowance	28900000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Other LoansReceivableCommercialRealEstateCommercialMortgageOther	125700000
CY2014Q4	ntrs	Estimated Credit Exposure From Clearing Activities EstimatedCreditExposureFromClearingActivities	60000000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Industrial And Warehouse LoansReceivableCommercialRealEstateCommercialMortgageIndustrialAndWarehouse	323700000
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses SecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAggregateLosses	61100000
CY2014Q4	ntrs	Long Term Debt Qualifying As Risk Based Capital LongTermDebtQualifyingAsRiskBasedCapital	1009100000
CY2014Q4	ntrs	Other Liabilities Excluding Derivatives And Non Financial Instruments OtherLiabilitiesExcludingDerivativesAndNonFinancialInstruments	2794100000
CY2014Q4	ntrs	Cash Collateral Received From Not Offset Against Derivative Assets CashCollateralReceivedFromNotOffsetAgainstDerivativeAssets	19600000
CY2014Q4	ntrs	Number Of Securities Unrealized Losses Position NumberOfSecuritiesUnrealizedLossesPosition	515	Investment
CY2014Q4	ntrs	Securities Continuous Unrealized Loss Position Fair Value SecuritiesContinuousUnrealizedLossPositionFairValue	10410800000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Commercial Mortgage Office LoansReceivableCommercialRealEstateCommercialMortgageOffice	735500000
CY2014Q4	ntrs	Lower Limit Of Generally Required Loan To Collateral Value For Residential Real Estate Loans LowerLimitOfGenerallyRequiredLoanToCollateralValueForResidentialRealEstateLoans	0.65	pure
CY2014Q4	ntrs	Client Security Settlement Receivables ClientSecuritySettlementReceivables	1568800000
CY2014Q4	ntrs	Loans Receivable Commercial Real Estate Other LoansReceivableCommercialRealEstateOther	187500000
CY2014Q4	ntrs	Loans Receivable Commercial Construction Acquisition And Development LoansReceivableCommercialConstructionAcquisitionAndDevelopment	256800000
CY2014Q4	ntrs	Overdrawn Demand Deposit Accounts OverdrawnDemandDepositAccounts	92100000
CY2014Q4	ntrs	Trust Preferred Securities TrustPreferredSecurities	277200000
CY2014Q2	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-55300000
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.99
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.80
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1289527	shares
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	839300000
CY2013	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	863958	shares
CY2013	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	55.90
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	240554840	shares
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.01
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3498894	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3088490	shares
CY2013	us-gaap	Stock Redeemed Or Called During Period Shares StockRedeemedOrCalledDuringPeriodShares	5545401	shares
CY2013	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-3800000
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	239265313	shares
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2400000
CY2013	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	24700000
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	30000000
CY2013	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	8168000000
CY2013	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	5715500000
CY2013	us-gaap	Payments For Proceeds From Other Interest Earning Assets PaymentsForProceedsFromOtherInterestEarningAssets	5292100000
CY2013	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3400000
CY2013	us-gaap	Noninterest Income Other NoninterestIncomeOther	302000000
CY2013	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	166500000
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	719500000
CY2013	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	913100000
CY2013	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	933100000
CY2013	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	11600000
CY2013	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	743100000
CY2013	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-176900000
CY2013	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	3800000
CY2013	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-44700000
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	804400000
CY2013	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	33500000
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	38700000
CY2013	us-gaap	Noninterest Income NoninterestIncome	3156200000
CY2013	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	142100000
CY2013	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	206200000
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	27700000
CY2013	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	-900000
CY2013	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-39700000
CY2013	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-17800000
CY2013	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	250600000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1075500000
CY2013	us-gaap	Gain Loss On Fair Value Hedge Ineffectiveness Net GainLossOnFairValueHedgeIneffectivenessNet	-800000
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0
CY2013	us-gaap	Pension Contributions PensionContributions	20700000
CY2013	us-gaap	Payments For Software PaymentsForSoftware	293000000
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	220600000
CY2013	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0
CY2013	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	244400000
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	770000000
CY2013	us-gaap	Income Taxes Paid IncomeTaxesPaid	262600000
CY2013	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	53700000
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	9800000
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-109400000
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	309700000
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	4300000
CY2013	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1500000
CY2013	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1155500000
CY2013	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	0
CY2013	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	61900000
CY2013	us-gaap	Revenues Revenues	4089300000
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	91900000
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	731300000
CY2013	us-gaap	Net Income Loss NetIncomeLoss	731300000
CY2013	us-gaap	Interest Paid InterestPaid	231900000
CY2013	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	237200000
CY2013	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-184900000
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-95000000
CY2013	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	6200000
CY2013	us-gaap	Amount Of Ineffectiveness On Net Investment Hedges AmountOfIneffectivenessOnNetInvestmentHedges	0
CY2013	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	19600000
CY2013	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	3000000
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	73800000
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	66600000
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-134600000
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-22400000
CY2013	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	-1700000
CY2013	us-gaap	Interest Expense InterestExpense	222400000
CY2013	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	39100000
CY2013	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	217500000
CY2013	us-gaap	Professional Fees ProfessionalFees	564100000
CY2013	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	59300000
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	14100000
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0
CY2013	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0
CY2013	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-31500000
CY2013	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	1500000
CY2013	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	20000000
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	5853900000
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-590300000
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1400000
CY2013	us-gaap	Depreciation Nonproduction DepreciationNonproduction	92300000
CY2013	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	23500000
CY2013	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-27600000
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	376400000
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	344200000
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5683300000
CY2013	us-gaap	Noninterest Expense NoninterestExpense	2993800000
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	76200000
CY2013	us-gaap	Proceeds From Payments For Federal Funds Sold And Securities Purchased Under Agreements To Resell Net ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet	-468800000
CY2013	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-782100000
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	185600000
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	146200000
CY2013	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	2900000
CY2013	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-11200000
CY2013	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	37100000
CY2013	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	400000
CY2013	us-gaap	Occupancy Net OccupancyNet	173800000
CY2013	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	1258800000
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	226700000
CY2013	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	11900000
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24600000
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	43000000
CY2013	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2938900000
CY2013	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	91600000
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4388300000
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-132800000
CY2013	us-gaap	Other Noninterest Expense OtherNoninterestExpense	314200000
CY2013	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	146200000
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	67400000
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	277600000
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	26300000
CY2013	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4300000
CY2013	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	282900000
CY2013	us-gaap	Interest Expense Deposits InterestExpenseDeposits	103300000
CY2013	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2400000
CY2013	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	8456400000
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	26900000
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	53900000
CY2013	us-gaap	Interest Expense Other Short Term Borrowings InterestExpenseOtherShortTermBorrowings	3300000
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	750000000
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4400000
CY2013	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1800000
CY2013	ntrs	Securities Sold Under Agreements To Repurchase Maximum Month End Balance During Period SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalanceDuringPeriod	917300000
CY2013	ntrs	Segment Reporting Information Consolidated Average Assets SegmentReportingInformationConsolidatedAverageAssets	94857700000
CY2013	ntrs	Investment Security Gains Losses Net InvestmentSecurityGainsLossesNet	-1500000
CY2013	ntrs	Segment Reporting Information Fully Taxable Equivalent Adjustment SegmentReportingInformationFullyTaxableEquivalentAdjustment	32500000
CY2013	ntrs	Noninterest Expense Other NoninterestExpenseOther	119700000
CY2013	ntrs	Gross Realized Investment Gains GrossRealizedInvestmentGains	800000
CY2013	ntrs	Net Income Loss Allocated To Common Stockholders Basic NetIncomeLossAllocatedToCommonStockholdersBasic	719400000
CY2013	ntrs	Loans And Leases Receivable Non Performing Loans Interest That Would Have Been Recognized LoansAndLeasesReceivableNonPerformingLoansInterestThatWouldHaveBeenRecognized	10600000
CY2013	ntrs	Securities Sold Under Agreements To Repurchase Average Interest Rate Paid During Period SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRatePaidDuringPeriod	0.0007	pure
CY2013	ntrs	Income Tax Reconciliation Leveraged Lease Adjustments IncomeTaxReconciliationLeveragedLeaseAdjustments	-2300000
CY2013	ntrs	Securities Purchased Under Agreement To Resell Average Balance During Period SecuritiesPurchasedUnderAgreementToResellAverageBalanceDuringPeriod	396300000
CY2013	ntrs	Securities Purchased Under Agreement To Resell Maximum Month End Balance During Period SecuritiesPurchasedUnderAgreementToResellMaximumMonthEndBalanceDuringPeriod	571500000
CY2013	ntrs	Securities Sold Under Agreements To Repurchase Average Balance During Period SecuritiesSoldUnderAgreementsToRepurchaseAverageBalanceDuringPeriod	594300000
CY2013	ntrs	Securities Lending Legal Settlement Charge SecuritiesLendingLegalSettlementCharge	19200000
CY2013	ntrs	Securities Purchased Under Agreement To Resell Average Interest Rate Earned During Period SecuritiesPurchasedUnderAgreementToResellAverageInterestRateEarnedDuringPeriod	0.0046	pure
CY2013	ntrs	Income Loss Before Income Taxes Including Fully Taxable Equivalent Adjustment IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment	1108000000
CY2013	ntrs	Gross Realized Investment Losses GrossRealizedInvestmentLosses	2300000
CY2013	ntrs	Interest Revenue Expense Net Including Fully Taxable Equivalent Adjustment InterestRevenueExpenseNetIncludingFullyTaxableEquivalentAdjustment	965600000
CY2013	ntrs	Interest Income Federal Reserve Deposits And Other InterestIncomeFederalReserveDepositsAndOther	21500000
CY2013	ntrs	Security Commissionsand Trading Income SecurityCommissionsandTradingIncome	68000000
CY2013	ntrs	Revenue Including Fully Taxable Equivalent Adjustment RevenueIncludingFullyTaxableEquivalentAdjustment	4121800000
CY2013	ntrs	Trust Investment And Other Servicing Fees TrustInvestmentAndOtherServicingFees	2609800000
CY2013	ntrs	Equipment And Software Expense EquipmentAndSoftwareExpense	377600000
CY2013	ntrs	Interest Expense Senior Notes InterestExpenseSeniorNotes	74400000
CY2013	ntrs	Treasury Management Fees TreasuryManagementFees	69000000
CY2013	ntrs	Salaries Wages And Incentives SalariesWagesAndIncentives	1306600000
CY2013	ntrs	Income Tax Expense Benefit Including Fully Taxable Equivalent Adjustment IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment	376700000
CY2013	ntrs	Other Than Temporary Impairment Losses Recognized In Earnings OtherThanTemporaryImpairmentLossesRecognizedInEarnings	0
CY2013	ntrs	Employee Benefits EmployeeBenefits	257500000
CY2013	ntrs	Banking Service Fees BankingServiceFees	50900000
CY2013	ntrs	Net Change In Client Security Settlement Receivables NetChangeInClientSecuritySettlementReceivables	-690600000
CY2013	ntrs	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	500000000
CY2013	ntrs	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Remaining Vesting Term ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageRemainingVestingTerm	P2Y
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.32
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	386749	shares
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue	13.09
CY2014	dei	Document Type DocumentType	10-K
CY2014	dei	Entity Registrant Name EntityRegistrantName	NORTHERN TRUST CORP
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2014	dei	Trading Symbol TradingSymbol	NTRS
CY2014	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<div> <p style="margin-top:0px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2"><b>Note 2 – Recent Accounting Pronouncements</b></font></p> <p style="margin-top:0px;margin-bottom:0px"><font size="1"> </font></p> <p style="margin-top:0px;margin-bottom:0px"><font style="font-family:Times New Roman" size="2">In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, “Revenue from Contracts with Customers (Topic 606).” The ASU is a converged standard between the FASB and the International Accounting Standards Board (IASB) that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The ASU is effective for interim and annual reporting periods beginning after December 15, 2016. Northern Trust is currently assessing the impact of adoption of ASU 2014-09.</font></p> <p style="margin-top:0px;margin-bottom:0px"><font size="1"> </font></p> <p style="margin-top:0px;margin-bottom:0px; text-indent:3%"> <font style="font-family:Times New Roman" size="2">In June 2014, the FASB issued ASU No. 2014-11, “Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures.” This ASU requires secured borrowing accounting treatment for repurchase-to-maturity transactions and provides guidance on accounting for repurchase financing arrangements. This ASU is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this ASU will result in additional disclosures, but is not expected to impact significantly Northern Trust’s consolidated financial position or results of operations.</font></p> <p style="margin-top:0px;margin-bottom:0px; text-indent:3%"> <font style="font-family:Times New Roman" size="2">In June 2014, the FASB also issued ASU No. 2014-12, “Compensation – Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period.” This ASU requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition and should not be reflected in estimating the grant-date fair value of the award. This ASU is effective for interim and annual reporting periods beginning after December 15, 2015 with earlier adoption permitted. The adoption of this ASU is not expected to impact significantly Northern Trust’s consolidated financial position or results of operations.</font></p> <p style="margin-top:0px;margin-bottom:0px; text-indent:3%"> <font style="font-family:Times New Roman" size="2">In August 2014, the FASB issued ASU No. 2014-14, “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force).” This ASU requires that a mortgage loan be derecognized and a separate receivable, measured based on the amount of the loan balance expected to be recovered from the guarantor, be recognized upon foreclosure if certain conditions are met. This ASU is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this ASU is not expected to significantly impact Northern Trust’s consolidated financial position or results of operations.</font></p> <p style="margin-top:0px;margin-bottom:0px; text-indent:3%"> <font style="font-family:Times New Roman" size="2">In November 2014, the FASB issued ASU No. 2014-16, “Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or to Equity (a consensus of the FASB Emerging Issues Task Force)”. This ASU requires issuers or investors of hybrid instruments issued in the form of a share to determine whether the nature of the host contract is more akin to debt or equity by considering all stated and implied substantive terms and features of the hybrid instrument, including the embedded derivative feature, weighing each term and feature on the basis of the relevant facts and circumstances. This ASU is effective for interim and annual periods beginning after December 15, 2015. The adoption of this ASU is not expected to significantly impact Northern Trust’s consolidated financial position or results of operations.</font></p> </div>
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	16.22
CY2014	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1890465	shares
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	936000000
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	82601	shares
CY2014	us-gaap	Maximum Length Of Time Foreign Currency Cash Flow Hedge MaximumLengthOfTimeForeignCurrencyCashFlowHedge	P23M
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	1579414	shares
CY2014	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	1040015	shares
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px; TEXT-INDENT: 3%"> <font style="FONT-FAMILY: Times New Roman" size="2"><b>C. Use of Estimates in the Preparation of Financial Statements.</b> The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.</font></p> </div>
CY2014	dei	Document Period End Date DocumentPeriodEndDate	2014-12-31
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	13.85
CY2014	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	64.20
CY2014	dei	Amendment Flag AmendmentFlag	false
CY2014	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	237720255	shares
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.34
CY2014	us-gaap	Schedule Of Resale Agreements ScheduleOfResaleAgreements	<div> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: arial" size="1"><b>TABLE 54: SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL</b></font></p> <p style="MARGIN-BOTTOM: -6px; MARGIN-TOP: 0px"><font size="1"> </font></p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"> <tr> <td width="80%"></td> <td valign="bottom" width="5%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="5%"></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> </tr> <tr> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font style="FONT-FAMILY: arial" size="1">($ In Millions)</font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1">  </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="right"><font style="FONT-FAMILY: arial" size="1"><b>2014</b></font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1"> </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1">    </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="right"><font style="FONT-FAMILY: arial" size="1">2013</font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1"> </font></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Balance at December 31</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b>$</b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>1,000.0</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1">$</font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">500.0</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> <tr> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Average Balance During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>742.1</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">396.3</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Average Interest Rate Earned During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>0.45</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>% </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">0.46</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">% </font></td> </tr> <tr> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Maximum Month-End Balance During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>1,000.0</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">571.5</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> </table> </div>
CY2014	dei	Entity Central Index Key EntityCentralIndexKey	0000073124
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2014	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<div> <p style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><font style="FONT-FAMILY: arial" size="1"><b>TABLE 55: SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE</b></font></p> <p style="MARGIN-BOTTOM: -6px; MARGIN-TOP: 0px"><font size="1"> </font></p> <table style="BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="100%" align="center" border="0"> <tr> <td width="80%"></td> <td valign="bottom" width="6%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="6%"></td> <td></td> <td></td> <td valign="bottom" width="2%"></td> </tr> <tr> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font style="FONT-FAMILY: arial" size="1">($ In Millions)</font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1">  </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="right"><font style="FONT-FAMILY: arial" size="1"><b>2014</b></font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1"> </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1">    </font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="right"><font style="FONT-FAMILY: arial" size="1">2013</font></td> <td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom"> <font size="1"> </font></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Balance at December 31</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b>$</b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>885.1</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1">$</font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">917.3</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> <tr> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Average Balance During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>989.6</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">594.3</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> <tr bgcolor="#CCEEFF"> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Average Interest Rate Paid During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>0.04</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>% </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">0.07</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">% </font></td> </tr> <tr> <td valign="top"> <p style="MARGIN-LEFT: 2em; TEXT-INDENT: -2em"><font style="FONT-FAMILY: ARIAL" size="1">Maximum Month-End Balance During the Year</font></p> </td> <td valign="bottom"><font size="1">  </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"><b> </b></font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1"><b>1,038.1</b></font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1"><b>  </b></font></td> <td valign="bottom"><font size="1">    </font></td> <td valign="bottom"><font style="FONT-FAMILY: ARIAL" size="1"> </font></td> <td valign="bottom" align="right"><font style="FONT-FAMILY: ARIAL" size="1">917.3</font></td> <td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: ARIAL" size="1">  </font></td> </tr> </table> </div>
CY2014	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1517588	shares
CY2014	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-8800000
CY2014	us-gaap	Noninterest Income Other NoninterestIncomeOther	282800000
CY2014	us-gaap	Description Of Lessee Leasing Arrangements Capital Leases DescriptionOfLesseeLeasingArrangementsCapitalLeases	In the event of sale or refinancing, Northern Trust would anticipate receiving full repayment of any outstanding loans plus 42% of any proceeds in excess of the original project costs.
CY2014	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<div> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2"><b>Note 24 – Contingent Liabilities</b></font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> <font size="1"> </font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2"><b>Legal Proceedings.</b> In the normal course of business, the Corporation and its subsidiaries are routinely defendants in or parties to a number of pending and threatened legal actions, including, but not limited to, actions brought on behalf of various claimants or classes of claimants, regulatory matters, employment matters, and challenges from tax authorities regarding the amount of taxes due. In certain of these actions and proceedings, claims for substantial monetary damages or adjustments to recorded tax liabilities are asserted.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">Based on current knowledge, after consultation with legal counsel and after taking into account current accruals, management does not believe that losses, if any, arising from pending litigation or threatened legal actions or regulatory matters will have a material adverse effect on the consolidated financial position or liquidity of the Corporation, although such matters could have a material adverse effect on the Corporation’s operating results for a particular period.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">Under GAAP, (i) an event is “probable” if the “future event or events are likely to occur”; (ii) an event is “reasonably possible” if “the chance of the future event or events occurring is more than remote but less than likely”; and (iii) an event is “remote” if “the chance of the future event or events occurring is slight.”</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">For the reasons set out in this paragraph, the outcome of some matters is inherently difficult to predict and/or the range of loss cannot be reasonably estimated. This may be the case in matters that (i) will be decided by a jury, (ii) are in early stages, (iii) involve uncertainty as to the likelihood of a class being certified or the ultimate size of the class, (iv) are subject to appeals or motions, (v) involve significant factual issues to be resolved, including with respect to the amount of damages, (vi) do not specify the amount of damages sought, or (vii) seek very large damages based on novel and complex damage and liability legal theories. Accordingly, the Corporation cannot reasonably estimate the eventual outcome of these pending matters, the timing of their ultimate resolution, or what the eventual loss, fines or penalties, if any, related to each pending matter will be.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">In accordance with applicable accounting guidance, the Corporation records accruals for litigation and regulatory matters when those matters present loss contingencies that are both probable and reasonably estimable. When loss contingencies are not both probable and reasonably estimable, the Corporation does not record accruals. No material accruals have been recorded for pending litigation or threatened legal actions or regulatory matters.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">For a limited number of the matters for which a loss is reasonably possible in future periods, whether in excess of an accrued liability or where there is no accrued liability, the Corporation is able to estimate a range of possible loss. As of December 31, 2014, the Corporation has estimated the upper end of the range of reasonably possible losses for these matters to be approximately $130 million in the aggregate. This aggregate amount of 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. The matters underlying the estimated range will change from time to time, and actual results will vary significantly from the current estimate.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">In certain other pending matters, there may be a range of reasonably possible losses (including reasonably possible losses in excess of amounts accrued) that cannot be reasonably estimated for the reasons described above. Such matters are not included in the estimate of reasonably possible losses identified above.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">As previously disclosed, a number of participants in Northern Trust’s securities lending program, which is associated with Northern Trust’s asset servicing business, have commenced either individual lawsuits or purported class actions in which they claim, among other things, that Northern Trust failed to exercise prudence in the investment management of the collateral received from the borrowers of the securities, resulting in losses that they seek to recover. The cases assert various contractual, statutory and common law claims, including claims for breach of fiduciary duty under common law and under the Employee Retirement Income Security Act (ERISA). In 2013, Northern Trust recorded a $19.2 million pre-tax charge in connection with an agreement to resolve claims related to two of these lawsuits. The settlements are not final as they require court approval. Other lawsuits related to securities lending are not part of the proposed settlement, and remain pending.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">In April 2014, Northern Trust received a subpoena from the U.S. Securities and Exchange Commission (SEC) seeking documents related to Northern Trust’s securities lending activities. Northern Trust is cooperating with the SEC in this investigation.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">In January 2015 the Public Prosecutor’s Office of France recommended that Northern Trust Fiduciary Services (Guernsey) Limited (NTFS), an indirect subsidiary of the Corporation, be charged with complicity in tax fraud and aggravated money laundering relating to the administration of two trusts for which NTFS serves as trustee. As trustee, NTFS provided no tax advice and had no involvement in the preparation or filing of the challenged estate tax filings. Charges against a number of other persons and entities also were recommended related to this matter. The parties currently are awaiting an investigating judge’s decision whether to bring the recommended criminal charges. If charges are brought, NTFS will contest them in the French court.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> <font size="1"> </font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2"><b>Visa Membership.</b> Northern Trust, as a member of Visa U.S.A. Inc. and in connection with the 2007 initial public offering of Visa, Inc. (Visa), received shares of restricted stock in Visa. As of December 31, 2014, the Visa shares held by Northern Trust are recorded at their original cost basis of zero and have restrictions as to their sale or transfer.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">Northern Trust is obligated to indemnify Visa for losses resulting from certain indemnified litigation relating to interchange fees and has been required to recognize, at its estimated fair value in accordance with GAAP, a guarantee liability arising from such litigation that has not yet settled. During 2007, Northern Trust recorded liabilities relating to Visa indemnified litigation. Subsequently, Visa established an escrow account to cover the settlements of, or judgments in, indemnified litigation. The fundings by Visa of its escrow account resulted in reductions of Northern Trust’s indemnification liability. Northern Trust’s indemnification liability was fully eliminated as of December 31, 2011. On October 19, 2012, Visa signed a settlement agreement with plaintiff representatives for binding settlement of the indemnified litigation. On January 14, 2014, the trial court entered a final judgment order approving the settlement with the class plaintiffs, which is subject to appeal. A number of objectors have appealed from that order and more than 30 opt-out cases have been filed by merchants in various federal district courts.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2">While the ultimate resolution of the indemnified litigation and the timing for removal of selling restrictions on the Visa shares are highly uncertain, Northern Trust anticipates that the value of its Visa shares will be adequate to offset any remaining indemnification obligations related to Visa litigation.</font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> <font size="1"> </font></p> <p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium 'Times New Roman'; MARGIN-TOP: 0px; LETTER-SPACING: normal; TEXT-INDENT: 3%; -webkit-text-stroke-width: 0px"> <font style="FONT-FAMILY: 'Times New Roman'" size="2"><b>Contingent Purchase Consideration.</b> In connection with an acquisition consummated in 2011, contingent consideration was recorded relating to certain performance-related purchase price adjustments. The fair value of the contingent consideration was $55.4 million at December 31, 2013. In April 2014, Northern Trust made a payment of $55.3 million to extinguish the contingent consideration liability at the value agreed by the parties.</font></p> </div>
CY2014	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	Segment
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2515769	shares
CY2014	us-gaap	Stock Redeemed Or Called During Period Shares StockRedeemedOrCalledDuringPeriodShares	7487114	shares
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-3700000
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	235829790	shares
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3000000
CY2014	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	21400000
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	21900000
CY2014	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	12668000000
CY2014	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	7138700000
CY2014	us-gaap	Payments For Proceeds From Other Interest Earning Assets PaymentsForProceedsFromOtherInterestEarningAssets	4474800000
CY2014	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	153500000
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	789000000
CY2014	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	999500000
CY2014	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1005500000
CY2014	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	7200000
CY2014	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	735900000
CY2014	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-86100000
CY2014	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	3900000
CY2014	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-34800000
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	640000000
CY2014	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	7800000
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75400000
CY2014	us-gaap	Noninterest Income NoninterestIncome	3325700000
CY2014	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	127600000
CY2014	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-20900000
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	29100000
CY2014	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	0
CY2014	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-18000000
CY2014	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2288300000
CY2014	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	359200000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1190200000
CY2014	us-gaap	Gain Loss On Fair Value Hedge Ineffectiveness Net GainLossOnFairValueHedgeIneffectivenessNet	0
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	0
CY2014	us-gaap	Pension Contributions PensionContributions	18700000
CY2014	us-gaap	Payments For Software PaymentsForSoftware	327600000
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	302900000
CY2014	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0
CY2014	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	210100000
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	736400000
CY2014	us-gaap	Income Taxes Paid IncomeTaxesPaid	279200000
CY2014	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	41200000
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	12900000
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	0
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	1000000
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	157400000
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	480700000
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-7600000
CY2014	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-4300000
CY2014	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1186900000
CY2014	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	0
CY2014	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	62700000
CY2014	us-gaap	Revenues Revenues	4331200000
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	81900000
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	802300000
CY2014	us-gaap	Net Income Loss NetIncomeLoss	811800000
CY2014	us-gaap	Interest Paid InterestPaid	186500000
CY2014	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	274900000
CY2014	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	32200000
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	0
CY2014	us-gaap	Payments Of Merger Related Costs Financing Activities PaymentsOfMergerRelatedCostsFinancingActivities	55300000
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	21600000
CY2014	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	4900000
CY2014	us-gaap	Amount Of Ineffectiveness On Net Investment Hedges AmountOfIneffectivenessOnNetInvestmentHedges	0
CY2014	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	18100000
CY2014	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	8800000
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	77700000
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-36400000
CY2014	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	90900000
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-15400000
CY2014	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	200000
CY2014	us-gaap	Interest Expense InterestExpense	181400000
CY2014	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	39100000
CY2014	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	388500000
CY2014	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-32200000
CY2014	us-gaap	Professional Fees ProfessionalFees	574600000
CY2014	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	36100000
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1600000
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	0
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	0
CY2014	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	55200000
CY2014	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	1300000
CY2014	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	9500000
CY2014	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6000000
CY2014	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	4907700000
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-111800000
CY2014	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3700000
CY2014	us-gaap	Depreciation Nonproduction DepreciationNonproduction	90600000
CY2014	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	22000000
CY2014	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-44100000
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	416600000
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	378400000
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-8212400000
CY2014	us-gaap	Noninterest Expense NoninterestExpense	3135000000
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	73200000
CY2014	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	1800000
CY2014	us-gaap	Proceeds From Payments For Federal Funds Sold And Securities Purchased Under Agreements To Resell Net ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet	-533100000
CY2014	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	3297200000
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	291500000
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	900000
CY2014	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	127500000
CY2014	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	-7500000
CY2014	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-4500000
CY2014	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	37700000
CY2014	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	400000
CY2014	us-gaap	Occupancy Net OccupancyNet	180300000
CY2014	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-164300000
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-222400000
CY2014	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	13300000
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	47200000
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	46800000
CY2014	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	8487700000
CY2014	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	88000000
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7073700000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	80600000
CY2014	us-gaap	Other Noninterest Expense OtherNoninterestExpense	272100000
CY2014	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	2400000
CY2014	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	127500000
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	76100000
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	414800000
CY2014	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	0
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	29600000
CY2014	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	18600000
CY2014	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	271200000
CY2014	us-gaap	Interest Expense Deposits InterestExpenseDeposits	81700000
CY2014	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2200000
CY2014	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-700000
CY2014	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	11476600000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	35300000
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-31100000
CY2014	us-gaap	Interest Expense Other Short Term Borrowings InterestExpenseOtherShortTermBorrowings	3400000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	5500000
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1200000
CY2014	ntrs	Securities Sold Under Agreements To Repurchase Maximum Month End Balance During Period SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalanceDuringPeriod	1038100000
CY2014	ntrs	Segment Reporting Information Consolidated Average Assets SegmentReportingInformationConsolidatedAverageAssets	104083500000
CY2014	ntrs	Segment Reporting Information Fully Taxable Equivalent Adjustment SegmentReportingInformationFullyTaxableEquivalentAdjustment	29400000
CY2014	ntrs	Line Of Credit Draw Down Period LineOfCreditDrawDownPeriod	P10Y
CY2014	ntrs	Net Income Loss Allocated To Common Stockholders Basic NetIncomeLossAllocatedToCommonStockholdersBasic	789000000
CY2014	ntrs	Noninterest Expense Other NoninterestExpenseOther	103500000
CY2014	ntrs	Gross Realized Investment Gains GrossRealizedInvestmentGains	2800000
CY2014	ntrs	Securities Purchased Under Agreement To Resell Average Balance During Period SecuritiesPurchasedUnderAgreementToResellAverageBalanceDuringPeriod	742100000
CY2014	ntrs	Securities Purchased Under Agreement To Resell Maximum Month End Balance During Period SecuritiesPurchasedUnderAgreementToResellMaximumMonthEndBalanceDuringPeriod	1000000000
CY2014	ntrs	Investment Security Gains Losses Net InvestmentSecurityGainsLossesNet	-100000
CY2014	ntrs	Loans And Leases Receivable Non Performing Loans Interest That Would Have Been Recognized LoansAndLeasesReceivableNonPerformingLoansInterestThatWouldHaveBeenRecognized	9100000
CY2014	ntrs	Other Than Temporary Impairment Losses OtherThanTemporaryImpairmentLosses	4900000
CY2014	ntrs	Securities Sold Under Agreements To Repurchase Average Interest Rate Paid During Period SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRatePaidDuringPeriod	0.0004	pure
CY2014	ntrs	Income Tax Reconciliation Leveraged Lease Adjustments IncomeTaxReconciliationLeveragedLeaseAdjustments	-3400000
CY2014	ntrs	Securities Sold Under Agreements To Repurchase Average Balance During Period SecuritiesSoldUnderAgreementsToRepurchaseAverageBalanceDuringPeriod	989600000
CY2014	ntrs	Securities Purchased Under Agreement To Resell Average Interest Rate Earned During Period SecuritiesPurchasedUnderAgreementToResellAverageInterestRateEarnedDuringPeriod	0.0045	pure
CY2014	ntrs	Income Loss Before Income Taxes Including Fully Taxable Equivalent Adjustment IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment	1219600000
CY2014	ntrs	Gross Realized Investment Losses GrossRealizedInvestmentLosses	2900000
CY2012	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1287700000
CY2014	ntrs	Interest Revenue Expense Net Including Fully Taxable Equivalent Adjustment InterestRevenueExpenseNetIncludingFullyTaxableEquivalentAdjustment	1034900000
CY2014	ntrs	Average Interest Bearing Deposits In Federal Reserve Bank For Reserve Requirements AverageInterestBearingDepositsInFederalReserveBankForReserveRequirements	1300000000
CY2014	ntrs	Interest Income Federal Reserve Deposits And Other InterestIncomeFederalReserveDepositsAndOther	41300000
CY2014	ntrs	Security Commissionsand Trading Income SecurityCommissionsandTradingIncome	67600000
CY2014	ntrs	Revenue Including Fully Taxable Equivalent Adjustment RevenueIncludingFullyTaxableEquivalentAdjustment	4360600000
CY2014	ntrs	Trust Investment And Other Servicing Fees TrustInvestmentAndOtherServicingFees	2832800000
CY2014	ntrs	Equipment And Software Expense EquipmentAndSoftwareExpense	421400000
CY2014	ntrs	Interest Expense Senior Notes InterestExpenseSeniorNotes	54700000
CY2014	ntrs	Treasury Management Fees TreasuryManagementFees	66000000
CY2014	ntrs	Salaries Wages And Incentives SalariesWagesAndIncentives	1417900000
CY2014	ntrs	Income Tax Expense Benefit Including Fully Taxable Equivalent Adjustment IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment	407800000
CY2014	ntrs	Other Than Temporary Impairment Losses Recognized In Earnings OtherThanTemporaryImpairmentLossesRecognizedInEarnings	4200000
CY2014	ntrs	Employee Benefits EmployeeBenefits	268700000
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CY2012	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	17700000
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CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	923700000
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CY2012	us-gaap	Noninterest Income NoninterestIncome	2905800000
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CY2012	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	41900000
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	27700000
CY2012	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	400000
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CY2012	us-gaap	Increase Decrease In Derivative Assets IncreaseDecreaseInDerivativeAssets	127900000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	992300000
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CY2012	us-gaap	Pension Contributions PensionContributions	112300000
CY2012	us-gaap	Payments For Software PaymentsForSoftware	239200000
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	354300000
CY2012	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	206100000
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	749900000
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	188500000
CY2012	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	35400000
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	4600000
CY2012	us-gaap	Fees And Commissions Mortgage Banking FeesAndCommissionsMortgageBanking	64500000
CY2012	us-gaap	Revenues Revenues	3896100000
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	73300000
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	687300000
CY2012	us-gaap	Net Income Loss NetIncomeLoss	687300000
CY2012	us-gaap	Interest Paid InterestPaid	307400000
CY2012	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	250600000
CY2012	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	35100000
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	61200000
CY2012	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	8000000
CY2012	us-gaap	Amount Of Ineffectiveness On Net Investment Hedges AmountOfIneffectivenessOnNetInvestmentHedges	5300000
CY2012	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	36700000
CY2012	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	2300000
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CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79700000
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CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	10600000
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CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	347300000
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	305000000
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1627600000
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CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	77900000
CY2012	us-gaap	Proceeds From Payments For Federal Funds Sold And Securities Purchased Under Agreements To Resell Net ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet	60500000
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CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	32300000
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CY2012	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	60300000
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CY2012	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	10000000
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21400000
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CY2012	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	87800000
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CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	24200000
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CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	225300000
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	20400000
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	18700000
CY2012	us-gaap	Interest Expense Deposits InterestExpenseDeposits	156700000
CY2012	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2800000
CY2012	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	600000
CY2012	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	21183300000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	12800000
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	66000000
CY2012	us-gaap	Interest Expense Other Short Term Borrowings InterestExpenseOtherShortTermBorrowings	4000000
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	500000000
CY2012	ntrs	Segment Reporting Information Consolidated Average Assets SegmentReportingInformationConsolidatedAverageAssets	92975500000
CY2012	ntrs	Investment Security Gains Losses Net InvestmentSecurityGainsLossesNet	1600000
CY2012	ntrs	Segment Reporting Information Fully Taxable Equivalent Adjustment SegmentReportingInformationFullyTaxableEquivalentAdjustment	40800000
CY2012	ntrs	Noninterest Expense Other NoninterestExpenseOther	107500000
CY2012	ntrs	Gross Realized Investment Gains GrossRealizedInvestmentGains	23500000
CY2012	ntrs	Net Income Loss Allocated To Common Stockholders Basic NetIncomeLossAllocatedToCommonStockholdersBasic	677300000
CY2012	ntrs	Loans And Leases Receivable Non Performing Loans Interest That Would Have Been Recognized LoansAndLeasesReceivableNonPerformingLoansInterestThatWouldHaveBeenRecognized	11600000
CY2012	ntrs	Other Than Temporary Impairment Losses OtherThanTemporaryImpairmentLosses	2700000
CY2012	ntrs	Income Tax Reconciliation Leveraged Lease Adjustments IncomeTaxReconciliationLeveragedLeaseAdjustments	-12000000
CY2012	ntrs	Income Loss Before Income Taxes Including Fully Taxable Equivalent Adjustment IncomeLossBeforeIncomeTaxesIncludingFullyTaxableEquivalentAdjustment	1033100000
CY2012	ntrs	Gross Realized Investment Losses GrossRealizedInvestmentLosses	21900000
CY2012	ntrs	Interest Revenue Expense Net Including Fully Taxable Equivalent Adjustment InterestRevenueExpenseNetIncludingFullyTaxableEquivalentAdjustment	1031100000
CY2012	ntrs	Interest Income Federal Reserve Deposits And Other InterestIncomeFederalReserveDepositsAndOther	14400000
CY2012	ntrs	Security Commissionsand Trading Income SecurityCommissionsandTradingIncome	73600000
CY2012	ntrs	Revenue Including Fully Taxable Equivalent Adjustment RevenueIncludingFullyTaxableEquivalentAdjustment	3936900000
CY2012	ntrs	Equipment And Software Expense EquipmentAndSoftwareExpense	366700000
CY2012	ntrs	Interest Expense Senior Notes InterestExpenseSeniorNotes	72000000
CY2012	ntrs	Treasury Management Fees TreasuryManagementFees	67400000
CY2012	ntrs	Salaries Wages And Incentives SalariesWagesAndIncentives	1267400000
CY2012	ntrs	Income Tax Expense Benefit Including Fully Taxable Equivalent Adjustment IncomeTaxExpenseBenefitIncludingFullyTaxableEquivalentAdjustment	345800000
CY2012	ntrs	Other Than Temporary Impairment Losses Recognized In Earnings OtherThanTemporaryImpairmentLossesRecognizedInEarnings	3300000
CY2012	ntrs	Employee Benefits EmployeeBenefits	258200000
CY2012	ntrs	Banking Service Fees BankingServiceFees	55000000
CY2012	ntrs	Net Change In Client Security Settlement Receivables NetChangeInClientSecuritySettlementReceivables	1270800000
CY2012	ntrs	Proceeds From Sales Of Investment Securities ProceedsFromSalesOfInvestmentSecurities	2700000000

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$NTRS
NORTHERN TRUST CORP Stock $ntrs

2013 Q4 Form 10-K Financial Statement

#000119312515065963 Filed on February 26, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTRS NORTHERN TRUST CORP Stock $ntrs

2013 Q4 Form 10-K Financial Statement

#000119312515065963 Filed on February 26, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NTRS
NORTHERN TRUST CORP Stock $ntrs