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Stock Plans (Tables)
12 Months Ended
Dec. 31, 2013
Weighted-Average Black-Scholes Fair Value Assumptions

Our weighted-average Black-Scholes fair value assumptions were:

 

                                                                                              
     Risk-Free
Interest Rate
    Expected Life      Expected
Volatility
    Expected
Dividend

Yield
    Fair Value
at Grant Date
 

2013

     1.15     6 years         20.36     1.94   $ 4.31   

2012

     1.16     6 years         20.13     3.08   $ 4.78   

2011

     2.34     6 years         18.92     3.72   $ 3.84   
Stock Options Activity

Stock option activity for the year ended December 31, 2013 is reflected below:

 

                                                                           
                  Average         
           Weighted-      Remaining      Aggregate  
     Shares Subject     Average      Contractual      Intrinsic  
     to Option     Exercise Price      Term      Value  

Balance at January 1, 2013

     52,753,039      $ 20.45         

Options granted

     12,406,792        27.21         

Options exercised

     (7,185,616     19.41         

Options cancelled

     (2,190,776     23.86         
  

 

 

         

Balance at December 31, 2013

     55,783,439        21.96         7 years       $ 744 million   
  

 

 

         

Exercisable at December 31, 2013

     31,036,120        19.40         6 years       $ 494 million   
  

 

 

         
Restricted And Deferred Stock
 
Restricted and Deferred Stock Activity

Our restricted and deferred stock activity for the year ended December 31, 2013 is reflected below:

 

                                     
     Number of
Shares
    Weighted-
Average
Grant Date

Fair Value
Per Share
 

Balance at January 1, 2013

     12,815,911      $ 21.55   

Granted

     5,231,437        25.63   

Vested

     (5,350,073     18.82   

Forfeited

     (1,048,688     23.23   
  

 

 

   

Balance at December 31, 2013

     11,648,587        24.48