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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Assumptions Used in Options Pricing Model

The assumptions pertaining to options issued during 2014, 2013, and 2012 are shown in the following table.

 

Year ended December 31,    2014     2013     2012      

 

   

Average option life

     6.2 years       6.3 years       6.3 years    

Future dividend yield

     1.70   %      2.14   %      1.50   %   

Historical share price volatility

     .497       .495       .489    

Weighted-average risk-free interest rate

     1.9   %      1.1   %      1.2   % 
Activity, Pricing and Other Information for Stock Options

The following table summarizes activity, pricing and other information for our stock options for the year ended December 31, 2014.

 

      Number of
Options
    Weighted-Average
Exercise Price Per
Option
     Weighted-Average
Remaining Life
(Years)
     Aggregate
Intrinsic
Value (a)
 

Outstanding at December 31, 2013

     25,705,942     $             19.83        

Granted

     730,611       12.92        

Exercised

     (3,050,309     8.72        

Lapsed or canceled

     (3,470,688     29.09        

Outstanding at December 31, 2014

     19,915,556     $ 19.67        3.8      $             58   
  

 

 

         
    

 

 

                           

Expected to vest

     3,045,216     $ 9.37        7.6      $ 14   

Exercisable at December 31, 2014

     16,635,502     $ 21.69        3.0      $ 44   
                                    

 

(a) The intrinsic value of a stock option is the amount by which the fair value of the underlying stock exceeds the exercise price of the option. At December 31, 2014, the fair value of the underlying stock was less than the weighted-average exercise price per option.
Activity and Pricing Information for Nonvested Shares in Long-Term Incentive Compensation Program

The following table summarizes activity and pricing information for the nonvested shares in the Program for the year ended December 31, 2014.

 

     Vesting Contingent on
Service Conditions
     Vesting Contingent on
Performance and Service
Conditions
 
      Number of
Nonvested
Shares
    Weighted-
Average
Grant-Date
Fair Value
     Number of
Nonvested
Shares
    Weighted-
Average
Grant-Date
Fair Value
 

Outstanding at December 31, 2013

     4,758,376     $ 8.94        4,643,110     $ 11.56  

Granted

     2,314,730       12.92        1,322,326       13.15  

Vested

     (1,679,312     8.94        (1,582,525     12.96  

Forfeited

 

    

 

(369,582

 

 

   

 

10.52

 

 

 

    

 

(308,591

 

 

   

 

13.08

 

 

 

Outstanding at December 31, 2014

     5,024,212     $   10.61        4,074,320     $   13.04  
Activity and Pricing Information for Nonvested Shares Granted Under Other Restricted Stock Awards

The following table summarizes activity and pricing information for the nonvested shares granted under these restricted stock or unit awards for the year ended December 31, 2014.

 

      Number of
Nonvested
Shares
    Weighted-Average
Grant-Date
Fair Value
      

Outstanding at December 31, 2013

     1,366,470     $             8.48     

Granted

     190,349       12.92     

Vested

     (634,787     8.68     

Forfeited

     (21,107     7.98     

Outstanding at December 31, 2014

     900,925     $ 9.21     
Activity and Pricing Information for Nonvested Shares in Deferred Compensation Plans

The following table summarizes activity and pricing information for the nonvested shares in our deferred compensation plans for the year ended December 31, 2014.

 

      Number of
Nonvested
Shares
    Weighted-Average
Grant-Date
Fair Value
      

Outstanding at December 31, 2013

     1,344,098     $             9.06     

Granted

     1,391,968       13.61     

Dividend equivalents

     38,188       13.77     

Vested

     (497,376     8.65     

Forfeited

     (54,263     12.04     

Outstanding at December 31, 2014

     2,222,615     $ 12.01