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Stock Options and Other Stock Based Compensation (Tables)
12 Months Ended
Dec. 31, 2011
Stock Options and Other Stock Based Compensation  
Summary of option activity

 

 

 
  Number of
Shares
(thousands)
  Weighted
Average
Exercise
Price
(per share)
  Weighted
Average
Remaining
Contractual
Term
(years)
  Aggregate
Intrinsic
Value
 

Options outstanding at January 1, 2011

    4,048   $ 20.60              

Granted

    548     29.68              

Exercised

    (340 )   15.32              

Forfeited or expired

    (212 )   21.98              
                         

Options outstanding at December 31, 2011

    4,044     22.20     3.6   $ 13  
                   

Options vested or expected to vest at December 31, 2011

    3,991   $ 22.20     3.6   $ 13  
                   

Options exercisable at December 31, 2011

    2,450   $ 21.78     2.8   $ 7  
                   
Additional information related to stock options

 

 

 
  2011   2010   2009  

Weighted average grant-date fair value of options granted (per share)

  $ 13.70   $ 14.60   $ 4.23  
               

Aggregate intrinsic value of options exercised

  $ 4   $ 5   $ 3  
               

Aggregate cash received from options exercised

  $ 5   $ 5   $ 7  
               
Restricted shares and restricted share units activity

 

 

 
  Number of
Restricted
Shares
(thousands)
  Weighted
Average
Grant-Date
Fair Value
(per share)
 

Nonvested at January 1, 2011

    536   $ 20.11  

Granted

    156     29.99  

Vested

    (152 )   23.50  

Forfeited

    (29 )   23.49  
             

Nonvested at December 31, 2011

    511     21.94  
           

Awards granted during 2010

        $ 31.30  

Awards granted during 2009

        $ 11.85  

 

 
  2011   2010   2009  

Total fair value of shares vested

  $ 4   $ 5   $ 4  
               
Performance vested restricted share unit activity

 

 

 
  Number of
Performance Vested
Restricted Shares
Units (thousands)
  Weighted Average
Grant-Date
Fair Value
(per unit)
 

Nonvested at January 1, 2011

    1,220   $ 19.99  

Granted

    253     29.70  

Forfeited/Cancelled

    (194 )   45.37  
             

Nonvested at December 31, 2011

    1,279     18.06  
           

Awards granted during 2010

        $ 31.10  

Awards granted during 2009

        $ 10.30