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Earnings Per Share
9 Months Ended
Sep. 30, 2012
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]  
Earnings Per Share
(2) Earnings Per Share

Net earnings per share data for the quarters and nine months ended September 30, 2012 and September 25, 2011 were computed as follows:

 
2012
2011
 
-----------------
-----------------
Quarter
----------
Basic
-------
Diluted
--------
Basic
-------
Diluted
--------
Net earnings
$  164,852      
164,852      
170,990      
170,990      
 
=======      
=======      
=======      
=======      
         
Average shares outstanding
130,619      
130,619      
132,448      
132,448      
Effect of dilutive securities:
       
   Options and other share-based awards
-      
1,864      
-      
2,476      
 
------------      
------------      
------------      
------------      
Equivalent shares
130,619      
132,483      
132,448      
134,924      
 
=======      
=======      
=======      
=======      
         
Net earnings per common share
$        1.26      
1.24      
1.29      
1.27      
 
=======      
=======      
=======      
=======      

 
2012
2011
 
-----------------
-----------------
Nine Months
---------------
Basic
-------
Diluted
---------
Basic
-------
Diluted
---------
Net earnings
$  205,700      
205,700     
246,237      
246,237    
    
=======      
=======     
=======      
=======   
         
Average shares outstanding
130,146      
130,146     
135,388      
135,388    
Effect of dilutive securities:
       
   Options and other share-based awards
-      
1,893     
-      
2,985    
 
------------      
------------     
------------      
------------    
Equivalent shares
130,146      
132,039     
135,388      
138,373    
 
=======      
=======     
=======      
=======    
         
Net earnings per common share
$        1.58      
1.56     
1.82      
1.78    
 
=======      
=======     
=======      
=======    

For the quarters ended September 30, 2012 and September 25, 2011, options to acquire shares totaling 3,478 and 1,851, respectively, were excluded from the calculation of diluted earnings per share because to include them would have been antidilutive. For the nine-month periods ended September 30, 2012 and September 25, 2011, options to acquire shares totaling 3,508 and 1,394, respectively, were excluded from the calculation of diluted earnings per share because to include them would have been antidilutive.