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Employee Stock Plans (Tables)
 12 Months Ended
Dec. 31, 2012
Summary of Status of Senior Executive Plans

The following table is a summary of the status of our senior executive plans for the three years ended December 31, 2012:

 

     Year ended December 31, 2012  
     2012      2011      2010  
     Shares
(in millions)		     Fair Value
(per share)		      Shares
(in millions)		     Fair Value
(per share)		      Shares
(in millions)		     Fair Value
(per share)		  

Balance, at beginning of year

      —          $  —           3.7      $ 11         5.6      $ 7   

Granted

      1.6        14         0.1        17         0.3        17   

Vested (1)

      (0.6 )      16         (1.3 )      15         (1.9 )      18   

Forfeited/expired

      (1.0 )      16         (2.5 )      15         (0.3 )      11   
  

 

 

       

 

 

       

 

 

    

Balance, at end of year

      —          —           —          —           3.7        11   
  

 

 

       

 

 

       

 

 

    

Issued in calendar year (1)

      0.8        16         1.1        15         0.8        11   
  

 

 

       

 

 

       

 

 

    

 

(1) Shares that vest at December 31 of each year are issued to the employees in the first quarter of the following year, although the requisite service period is complete. Accordingly, the 0.8 million shares issued in 2012 include shares vested at December 31, 2011, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $9.5 million, $15.4 million and $6.9 million, for 2012, 2011 and 2010, respectively.