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Stock Options and Other Stock Based Compensation (Tables)
12 Months Ended
Dec. 31, 2013
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, 2013

    3,735   $ 22.65              

Granted

    354     26.10              

Exercised

    (1,414 )   17.52              

Forfeited or expired

    (254 )   28.90              
                         

Options outstanding at December 31, 2013

    2,421     25.50     3.4   $ 30  
                   
                   

Options vested or expected to vest at December 31, 2013

    2,354   $ 25.48     3.4   $ 29  
                   
                   

Options exercisable at December 31, 2013

    1,538   $ 25.04     2.4   $ 21  
                   
                   
Additional information related to stock options

 

 

 
  2013   2012   2011  

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

  $ 12.39   $ 10.63   $ 13.70  
               
               

Aggregate intrinsic value of options exercised

  $ 16   $ 3   $ 4  
               
               

Aggregate cash received from options exercised

  $ 24   $ 4   $ 5  
               
               
Schedule of weighted average assumptions used to estimate the fair value of each option grant on the date of grant using the Black-Scholes option pricing model

 

 

 
  2013   2012   2011  

Expected life of options (years)

    5.00     4.75     4.75  

Expected stock price volatility

    55.3 %   56.6 %   53.2 %

Risk-free interest rate

    0.9 %   0.8 %   1.7 %

Expected dividend yield

    0.0 %   0.0 %   0.0 %
Restricted shares and restricted share units activity

 

 

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

Nonvested at January 1, 2013

    465   $ 22.34  

Granted

    198     26.49  

Vested

    (176 )   21.99  

Forfeited

    (30 )   24.34  
             

Nonvested at December 31, 2013

    457     24.14  
           
           

Awards granted during 2012

        $ 22.39  

Awards granted during 2011

        $ 29.99  

 

 
  2013   2012   2011  

Total fair value of shares vested

  $ 5   $ 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, 2013

    813   $ 26.78  

Granted

    336     26.10  

Vested

    (110 )   31.12  

Forfeited/Cancelled

    (157 )   29.55  
             

Nonvested at December 31, 2013

    882     25.49  
           
           

Awards granted during 2012

        $ 22.50  

Awards granted during 2011

        $ 29.70