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Net Income Per Share
 9 Months Ended
Sep. 30, 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 and nine-month periods ended September 30, 2013 and 2012 (in thousands, except per share data):

 
 
Three Months Ended
  
Nine Months Ended
 
 
 
September 30,
  
September 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Numerator for Basic and Diluted Earnings Per Share -
 
  
  
  
 
   Net Income
 
$
462,498
  
$
355,491
  
$
1,616,915
  
$
1,075,278
 
 
                
Denominator for Basic Earnings Per Share -
                
Weighted Average Shares
  
270,471
   
267,941
   
269,934
   
267,136
 
Potential Dilutive Common Shares -
                
Stock Options/SARs
  
1,189
   
1,343
   
1,098
   
1,517
 
Restricted Stock/Units and Performance Units/Stock
  
1,916
   
1,698
   
1,824
   
1,675
 
Denominator for Diluted Earnings Per Share -
                
Adjusted Diluted Weighted Average Shares
  
273,576
   
270,982
   
272,856
   
270,328
 
 
                
Net Income Per Share
                
Basic
 
$
1.71
  
$
1.33
  
$
5.99
  
$
4.03
 
Diluted
 
$
1.69
  
$
1.31
  
$
5.93
  
$
3.98
 

The diluted earnings per share calculation excluded stock options and SARs that were anti-dilutive.  Shares underlying the excluded stock options and SARs totaled 0.3 million and 0.5 million shares for the three months ended September 30, 2013 and 2012, respectively, and 0.1 million and 0.3 million shares for the nine months ended September 30, 2013 and 2012, respectively.