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STOCK - BASED COMPENSATION PLANS (Tables)
12 Months Ended
Dec. 31, 2012
Stock-Based Compensation Cost and Associated Tax Benefit

Presented below is a summary of the stock-based compensation expense and associated tax benefit in the accompanying Consolidated Statements of Operations:

 

     Year Ended December 31,  
     2012      2011      2010  
Stock-based compensation expense    $ 64.5      $ 56.7      $ 56.6  
Tax benefit    $ 23.3      $ 18.1      $ 23.9  
Weighted Average Assumptions used in Determining Fair Value for Options Granted

The following weighted average assumptions were used for options granted:

 

     Year Ended December 31,  
     2012     2011     2010  
Expected dividend yield      1.66     1.53     1.58
Expected stock volatility      44     41     44
Risk-free interest rate      1.55     3.33     2.73
Expected holding period      7.4 years        7.6 years        5.9 years   
Grant date fair value    $ 15.19     $ 12.49     $ 10.38  
Summary of Option Activity

A summary of option activity as of December 31, 2012 and changes during the year then ended is presented below:

 

Options

   Shares     Weighted
Average
Exercise Price
Per Share
     Weighted
Average
Remaining
Contractual
Term
     Aggregate
Intrinsic Value
 
Outstanding, December 31, 2011      17.4     $ 39.60        
Granted      0.5       38.68        
Exercised      (4.4     28.77        
Forfeited      (0.1     27.66        
Expired      (0.4     57.28        
  

 

 

         
Outstanding, December 31, 2012      13.0     $ 42.82        4.6 yrs       $ 163.9  
  

 

 

         
Vested and expected to vest, December 31, 2012      12.8     $ 43.05        4.5 yrs       $ 159.2  
  

 

 

         
Exercisable, December 31, 2012      10.4     $ 46.14        3.9 yrs       $ 109.9  
  

 

 

         
Summary of Information Relating to Stock Option Exercises

The following table summarizes information relating to stock option exercises:

 

     Year Ended December 31,  
     2012      2011      2010  
Proceeds from stock option exercises    $ 127.4      $ 50.3      $ 36.4  
Aggregate intrinsic value    $ 61.3      $ 25.3      $ 19.7  
Tax benefit realized upon exercise    $ 23.4      $ 9.6      $ 7.8  
Summary of Nonvested Restricted Stock

A summary of the status of the Company’s nonvested restricted stock as of December 31, 2012 and changes during the year then ended is presented below:

 

Nonvested Restricted Stock

   Shares     Weighted Average Grant
Date Fair Value Per Share
 
Balance, December 31, 2011      2.8     $ 30.65  

Granted

     1.3       38.62  

Vested

     (1.0     33.82  

Forfeited

     (0.1     32.07  
  

 

 

   
Balance, December 31, 2012      3.0     $ 33.08  
  

 

 

   
Information Related to Vesting of Restricted Stock Awards

The following table summarizes information relating to the vesting of restricted stock awards:

 

     Year Ended December 31,  
     2012      2011      2010  
Fair value of vested shares    $ 37.8      $ 18.9      $ 12.4  
Tax benefit realized upon vesting    $ 13.4      $ 6.9      $ 4.7  
Summary of Performance Based Restricted Stock

A summary of the status of the Company’s performance-based restricted stock as of December 31, 2012 and changes during the year then ended is presented below:

 

Performance-based restricted stock

   Shares      Weighted Average Grant
Date Fair Value Per Share
 
Balance, December 31, 2011      1.0      $ 26.92  

Granted

     0.3        36.78  

Vested

     (0.5      25.27  

Adjustment to shares expected to vest*

     0.2        33.67  
  

 

 

    
Balance, December 31, 2012      1.0      $ 30.06  
  

 

 

    

 

* The adjustment reflects additional shares expected to vest based on the Company’s projected achievement of certain non-market based performance metrics as of December 31, 2012.