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Net Income Per Share
 6 Months Ended
Jun. 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 six-month periods ended June 30, 2013 and 2012 (in thousands, except per share data):

 
 
Three Months Ended
  
Six Months Ended
 
 
 
June 30,
  
June 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Numerator for Basic and Diluted Earnings Per Share -
 
  
  
  
 
Net Income
 
$
659,692
  
$
395,778
  
$
1,154,417
  
$
719,787
 
 
                
Denominator for Basic Earnings Per Share -
                
Weighted Average Shares
  
270,016
   
266,874
   
269,665
   
266,718
 
Potential Dilutive Common Shares -
                
Stock Options/SARs
  
987
   
1,428
   
1,050
   
1,611
 
Restricted Stock/Units and Performance Units/Stock
  
1,736
   
1,683
   
1,758
   
1,754
 
Denominator for Diluted Earnings Per Share -
                
Adjusted Diluted Weighted Average Shares
  
272,739
   
269,985
   
272,473
   
270,083
 
 
                
Net Income Per Share
                
Basic
 
$
2.44
  
$
1.48
  
$
4.28
  
$
2.70
 
Diluted
 
$
2.42
  
$
1.47
  
$
4.24
  
$
2.67
 


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 and 0.3 million shares for the three months ended June 30, 2013 and 2012, respectively, and 0.1 million and 0.2 million shares for the six months ended June 30, 2013 and 2012, respectively.