101 - Document - Document and Entity Information
link:calculationLink
link:presentationLink
link:definitionLink
103 - Statement - CONSOLIDATED BALANCE SHEET
link:calculationLink
link:presentationLink
link:definitionLink
104 - Statement - CONSOLIDATED BALANCE SHEET (Parenthetical)
link:calculationLink
link:presentationLink
link:definitionLink
105 - Statement - CONSOLIDATED STATEMENT OF INCOME
link:calculationLink
link:presentationLink
link:definitionLink
106 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
link:calculationLink
link:presentationLink
link:definitionLink
107 - Statement - CONSOLIDATED STATEMENT OF INCOME (Parenthetical)
link:calculationLink
link:presentationLink
link:definitionLink
108 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
link:calculationLink
link:presentationLink
link:definitionLink
109 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS
link:calculationLink
link:presentationLink
link:definitionLink
110 - Disclosure - Basis of Presentation
link:calculationLink
link:presentationLink
link:definitionLink
111 - Disclosure - Recent Accounting Pronouncements
link:calculationLink
link:presentationLink
link:definitionLink
112 - Disclosure - Fair Value Measurements - Fair Value Hierarchy
link:calculationLink
link:presentationLink
link:definitionLink
113 - Disclosure - Securities
link:calculationLink
link:presentationLink
link:definitionLink
114 - Disclosure - Loans and Leases
link:calculationLink
link:presentationLink
link:definitionLink
115 - Disclosure - Allowance for Credit Losses
link:calculationLink
link:presentationLink
link:definitionLink
116 - Disclosure - Pledged Assets
link:calculationLink
link:presentationLink
link:definitionLink
117 - Disclosure - Goodwill and Other Intangibles
link:calculationLink
link:presentationLink
link:definitionLink
118 - Disclosure - Business Units
link:calculationLink
link:presentationLink
link:definitionLink
119 - Disclosure - Accumulated Other Comprehensive Income (Loss)
link:calculationLink
link:presentationLink
link:definitionLink
120 - Disclosure - Net Income Per Common Share Computations
link:calculationLink
link:presentationLink
link:definitionLink
121 - Disclosure - Net Interest Income
link:calculationLink
link:presentationLink
link:definitionLink
122 - Disclosure - Visa Membership
link:calculationLink
link:presentationLink
link:definitionLink
123 - Disclosure - Income Taxes
link:calculationLink
link:presentationLink
link:definitionLink
124 - Disclosure - Pension and Other Postretirement Plans
link:calculationLink
link:presentationLink
link:definitionLink
125 - Disclosure - Share-Based Compensation Plans
link:calculationLink
link:presentationLink
link:definitionLink
126 - Disclosure - Variable Interest Entities
link:calculationLink
link:presentationLink
link:definitionLink
127 - Disclosure - Contingent Liabilities
link:calculationLink
link:presentationLink
link:definitionLink
128 - Disclosure - Derivative Financial Instruments
link:calculationLink
link:presentationLink
link:definitionLink
129 - Disclosure - Debt Issuance
link:calculationLink
link:presentationLink
link:definitionLink
130 - Disclosure - Fair Value Measurements - Fair Value Hierarchy (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
131 - Disclosure - Securities (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
132 - Disclosure - Loans and Leases (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
133 - Disclosure - Allowance for Credit Losses (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
134 - Disclosure - Goodwill and Other Intangibles (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
135 - Disclosure - Business Units (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
136 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
137 - Disclosure - Net Income Per Common Share Computations (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
138 - Disclosure - Net Interest Income (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
139 - Disclosure - Pension and Other Postretirement Plans (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
140 - Disclosure - Share-Based Compensation Plans (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
141 - Disclosure - Derivative Financial Instruments (Tables)
link:calculationLink
link:presentationLink
link:definitionLink
142 - Disclosure - Assets and Liabilities Measured at Fair Value on a Recurring Basis Segregated by Fair Value Hierarchy Level (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
143 - Disclosure - Assets and Liabilities Measured at Fair Value on a Recurring Basis Segregated by Fair Value Hierarchy Level (Parenthetical) (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
144 - Disclosure - Changes in Level 3 Assets (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
145 - Disclosure - Fair Value Measurements - Fair Value Hierarchy - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
146 - Disclosure - Changes in Level 3 Liabilities (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
147 - Disclosure - Assets Measured at Fair Value on a Nonrecurring Basis (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
148 - Disclosure - Assets Measured at Fair Value on a Nonrecurring Basis (Parenthetical) (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
149 - Disclosure - Book and Fair Values of Financial Instruments (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
150 - Disclosure - Amortized Cost and Fair Values of Securities (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
151 - Disclosure - Maturity of Securities (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
152 - Disclosure - Securities - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
153 - Disclosure - Securities Continuous Unrealized Loss Position (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
154 - Disclosure - Book Values, Ultimate Default Rates, and Loss Severity Rates for the Non-Agency Residential Mortgage-Backed Securities Portfolio, by Security Type (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
155 - Disclosure - Credit Losses on Debt Securities (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
156 - Disclosure - Credit-Related Losses Recognized in Earnings on Debt Securities Other-than-temporarily Impaired (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
157 - Disclosure - Debt Securities Held for which an Other-Than-Temporary Impairment Loss has been Recognized in the Current Period or Previously (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
158 - Disclosure - Amounts Outstanding in Selected Loan Categories (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
159 - Disclosure - Loans and Leases - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
160 - Disclosure - Credit Quality Indicators (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
161 - Disclosure - Balances and Delinquency Status of Performing and Nonperforming Loans and Leases by Segment and Class as well as Total Other Real Estate Owned and Nonperforming Asset (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
162 - Disclosure - Impaired Loans by Segments and Class (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
163 - Disclosure - Average Recorded Investment in Impaired Loans and Interest Income that would have been Recorded on Nonperforming Loans (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
164 - Disclosure - Number of Loans and Leases Modified in Troubled Debt Restructurings During the Previous 12 months which Became Nonperforming as well as the Recorded Investment and Unpaid Principal Balance of Those TDRs (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
165 - Disclosure - Number of Loans and Leases Modified in Troubled Debt Restructurings during the previous 12 Months which became Disclosure - Nonperforming, as well as the Recorded Investment and Unpaid Principal Balance (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
166 - Disclosure - Changes in the Allowance for Credit Losses by Segment (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
167 - Disclosure - Reserve for Credit Losses and Recorded Investments in Loans and Leases by Segment (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
168 - Disclosure - Pledged Assets - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
169 - Disclosure - Changes in Carrying Amounts of Goodwill by Business Unit (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
170 - Disclosure - Other Intangible Assets Subject to Amortization (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
171 - Disclosure - Goodwill and Other Intangibles - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
172 - Disclosure - Earnings Contribution of Northern Trust's Business Units (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
173 - Disclosure - Earnings Contribution of Northern Trust's Business Units (Parenthetical) (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
174 - Disclosure - Components of Accumulated Other Comprehensive Income (Loss) (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
175 - Disclosure - Computations of Net Income (Loss) Per Common Share (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
176 - Disclosure - Net Income Per Common Share Computations - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
177 - Disclosure - Components of Net Interest Income (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
178 - Disclosure - Visa Membership - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
179 - Disclosure - Income Taxes - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
180 - Disclosure - Net Periodic Pension Expense of Northern Trust's U.S. and Non-U.S. Pension Plans, Supplemental Pension Plan, and Other Postretirement Plan (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
181 - Disclosure - Compensation Expense for Share-Based Payment Arrangements and the Associated Tax Impacts (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
182 - Disclosure - Variable Interest Entities - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
183 - Disclosure - Contingent Liabilities - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
184 - Disclosure - Derivative Financial Instruments - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
185 - Disclosure - Notional and Fair Value Amounts of Client-related and Trading Derivative Financial Instruments (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
186 - Disclosure - Gains and Losses Recorded in the Consolidated Statement of Income related to Client Related and Trading Derivative Financial Instruments (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
187 - Disclosure - Types and Classifications of Derivative Instruments Designated as Hedges (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
188 - Disclosure - Gains and Losses Recorded in the Consolidated Statement of Income related to Fair Value Hedges (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
189 - Disclosure - Cash Flow Hedge Derivative Gains and Losses Recognized in AOCI and the Amounts Reclassified to Earnings (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
190 - Disclosure - Net Investment Hedge Gains and Losses Recognized in AOCI (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
191 - Disclosure - Types and Classifications of Risk Management Derivative Instruments Not Formally Designated as Hedges, Including Notional and Fair Values (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
192 - Disclosure - Gains and Losses Recorded in the Consolidated Statement of Income related to Derivative Instruments Not Formally Designated as Hedges (Detail)
link:calculationLink
link:presentationLink
link:definitionLink
193 - Disclosure - Debt Issuance - Additional Information (Detail)
link:calculationLink
link:presentationLink
link:definitionLink