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Net Income Per Share
 3 Months Ended
Mar. 31, 2013
Net Income Per Share [Abstract]  
Net Income Per Share [Text Block]
3.Net Income Per Share

The following table sets forth the computation of Net Income Per Share for the three-month periods ended March 31, 2013 and 2012 (in thousands, except per share data):

 
 
Three Months Ended
 
 
 
March 31,
 
 
 
2013
  
2012
 
 
 
  
 
Numerator for Basic and Diluted Earnings Per Share -
 
  
 
Net Income
 
$
494,725
  
$
324,009
 
 
        
Denominator for Basic Earnings Per Share -
        
Weighted Average Shares
  
269,358
   
266,674
 
Potential Dilutive Common Shares -
        
Stock Options/SARs
  
1,099
   
1,800
 
Restricted Stock/Units and Performance Units/Stock
  
1,806
   
1,768
 
Denominator for Diluted Earnings Per Share -
        
Adjusted Diluted Weighted Average Shares
  
272,263
   
270,242
 
        
Net Income Per Share
        
Basic
 
$
1.84
  
$
1.22
 
Diluted
 
$
1.82
  
$
1.20
 


The diluted earnings per share calculation excludes stock options and SARs that were anti-dilutive.  Shares underlying the excluded stock options and SARs totaled 0.1 million shares for each of the three months ended March 31, 2013 and 2012.