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 - Fair Value Measurements - Fair Value Hierarchy (Tables) link:calculationLink link:presentationLink link:definitionLink 130 - Disclosure - Securities (Tables) link:calculationLink link:presentationLink link:definitionLink 131 - Disclosure - Loans and Leases (Tables) link:calculationLink link:presentationLink link:definitionLink 132 - Disclosure - Allowance for Credit Losses (Tables) link:calculationLink link:presentationLink link:definitionLink 133 - Disclosure - Goodwill and Other Intangibles (Tables) link:calculationLink link:presentationLink link:definitionLink 134 - Disclosure - Business Units (Tables) link:calculationLink link:presentationLink link:definitionLink 135 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:calculationLink link:presentationLink link:definitionLink 136 - Disclosure - Net Income Per Common Share Computations (Tables) link:calculationLink link:presentationLink link:definitionLink 137 - Disclosure - Net Interest Income (Tables) link:calculationLink link:presentationLink link:definitionLink 138 - Disclosure - Pension and Other Postretirement Plans (Tables) link:calculationLink link:presentationLink link:definitionLink 139 - Disclosure - Share-Based Compensation Plans (Tables) link:calculationLink link:presentationLink link:definitionLink 140 - Disclosure - Derivative Financial Instruments (Tables) link:calculationLink link:presentationLink link:definitionLink 141 - 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 142 - 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 143 - Disclosure - Changes in Level 3 Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 144 - Disclosure - Fair Value Measurements - Fair Value Hierarchy - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 145 - Disclosure - Changes in Level 3 Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 146 - Disclosure - Assets Measured at Fair Value on a Nonrecurring Basis (Detail) link:calculationLink link:presentationLink link:definitionLink 147 - Disclosure - Assets Measured at Fair Value on a Nonrecurring Basis (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 148 - Disclosure - Book and Fair Values of Financial Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 149 - Disclosure - Amortized Cost and Fair Values of Securities (Detail) link:calculationLink link:presentationLink link:definitionLink 150 - Disclosure - Maturity of Securities (Detail) link:calculationLink link:presentationLink link:definitionLink 151 - Disclosure - Securities - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 152 - Disclosure - Securities Continuous Unrealized Loss Position (Detail) link:calculationLink link:presentationLink link:definitionLink 153 - 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 154 - Disclosure - Credit Losses on Debt Securities (Detail) link:calculationLink link:presentationLink link:definitionLink 155 - Disclosure - Credit-Related Losses Recognized in Earnings on Debt Securities Other-than-temporarily Impaired (Detail) link:calculationLink link:presentationLink link:definitionLink 156 - 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 157 - Disclosure - Amounts Outstanding in Selected Loan Categories (Detail) link:calculationLink link:presentationLink link:definitionLink 158 - Disclosure - Loans and Leases - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 159 - Disclosure - Credit Quality Indicators (Detail) link:calculationLink link:presentationLink link:definitionLink 160 - 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 161 - Disclosure - Impaired Loans by Segments and Class (Detail) link:calculationLink link:presentationLink link:definitionLink 162 - 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 163 - Disclosure - Changes in the Allowance for Credit Losses by Segment (Detail) link:calculationLink link:presentationLink link:definitionLink 164 - Disclosure - Reserve for Credit Losses and Recorded Investments in Loans and Leases by Segment (Detail) link:calculationLink link:presentationLink link:definitionLink 165 - Disclosure - Pledged Assets - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 166 - Disclosure - Changes in Carrying Amounts of Goodwill by Business Unit (Detail) link:calculationLink link:presentationLink link:definitionLink 167 - Disclosure - Other Intangible Assets Subject to Amortization (Detail) link:calculationLink link:presentationLink link:definitionLink 168 - Disclosure - Goodwill and Other Intangibles - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 169 - Disclosure - Earnings Contribution of Northern Trust's Business Units (Detail) link:calculationLink link:presentationLink link:definitionLink 170 - Disclosure - Earnings Contribution of Northern Trust's Business Units (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 171 - Disclosure - Components of Accumulated Other Comprehensive Income (Loss) (Detail) link:calculationLink link:presentationLink link:definitionLink 172 - Disclosure - Computations of Net Income (Loss) Per Common Share (Detail) link:calculationLink link:presentationLink link:definitionLink 173 - Disclosure - Net Income Per Common Share Computations - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 174 - Disclosure - Components of Net Interest Income (Detail) link:calculationLink link:presentationLink link:definitionLink 175 - Disclosure - Visa Membership - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 176 - Disclosure - Income Taxes - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 177 - 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 178 - Disclosure - Compensation Expense for Share-Based Payment Arrangements and the Associated Tax Impacts (Detail) link:calculationLink link:presentationLink link:definitionLink 179 - Disclosure - Variable Interest Entities - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 180 - Disclosure - Contingent Liabilities - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 181 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 182 - Disclosure - Notional and Fair Value Amounts of Client-related and Trading Derivative Financial Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 183 - 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 184 - Disclosure - Types and Classifications of Derivative Instruments Designated as Hedges (Detail) link:calculationLink link:presentationLink link:definitionLink 185 - Disclosure - Gains and Losses Recorded in the Consolidated Statement of Income related to Fair Value Hedges (Detail) link:calculationLink link:presentationLink link:definitionLink 186 - Disclosure - Cash Flow Hedge Derivative Gains and Losses Recognized in AOCI and the Amounts Reclassified to Earnings (Detail) link:calculationLink link:presentationLink link:definitionLink 187 - Disclosure - Net Investment Hedge Gains and Losses Recognized in AOCI (Detail) link:calculationLink link:presentationLink link:definitionLink 188 - 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 189 - 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