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PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY
6 Months Ended
Jun. 30, 2011
Notes To Financial Statements [Abstract]  
PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY
9. PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY

     The Company is authorized to issue up to 265.0 shares of common stock, par value $0.10 per share. The Company's treasury shares are recorded at aggregate cost. The Company is authorized to issue up to 30.0 shares of preferred stock, par value $0.10 per share. There were no preferred shares outstanding as of June 30, 2011.

     The changes in common shares issued and held in treasury are summarized below:

      
Held in
    
   
Issued
  
Treasury
  
Outstanding
 
Common shares at December 31, 2010
  124.5   (22.1)  102.4 
Common stock issued under employee stock plans
  1.7   --   1.7 
Common stock issued upon conversion of zero-coupon
            
     subordinated notes
  0.9   --   0.9 
Surrender of restricted stock and performance share awards
  --   (0.1)  (0.1)
Retirement of common stock
  (3.5)  --   (3.5)
              
Common shares at June 30, 2011
  123.6   (22.2)  101.4 

Share Repurchase Program

     As of December 31, 2010, the Company had outstanding authorization from the Board of Directors to purchase approximately $234.3 of Company common stock. On February 10, 2011, the Company announced the Board of Directors authorized the purchase of $500.0 of additional shares of the Company's common stock. During the six months ended June 30, 2011, the Company purchased approximately 3.5 shares of its common stock at a total cost of approximately $325.8. As of June 30, 2011, the Company had outstanding authorization from the Board of Directors to purchase approximately $408.5 of Company common stock.