Company:  NORTHERN TRUST CORP (NTRS)
Form Type:  10-Q
Filing Date:  7/29/2009 
CIK:  0000073124 
Address:  50 S LASALLE ST 
City, State, Zip:  CHICAGO, Illinois 60603 
Telephone:  (312) 630-6000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$47.24  
Change: 
-0.43 (-0.90%)  
Trade Time: 
Nov 20  
Market Cap: 
$11.41B
Description of Business
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  FORM 10-Q
    PART I - FINANCIAL INFORMATION
      Item 1. Financial Statements
        BALANCE SHEET
        INCOME STATEMENT
        CASH FLOW
        Notes to Consolidated Financial Statements
      Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL ...
      FINANCIAL STATEMENTS
        BALANCE SHEET
      Item 3. Quantitative and Qualitative Disclosures about ...
      Item 4. Controls and Procedures
    PART II - OTHER INFORMATION
      Item 1. Legal Proceedings
      Item 1A. Risk Factors
      Item 2. Unregistered Sales of Equity Securities and Use of ...
      Item 6. Exhibits
    SIGNATURES
    EXHIBIT INDEX
  EXHIBIT 31.I
    Certification of CEO Pursuant to
  EXHIBIT 31.II
    Certification of CFO Pursuant to
  EXHIBIT 32.I
    Certifications of CEO and CFO Pursuant to