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Earnings Per Share
3 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Earnings Per Share
5. Earnings Per Share
     A reconciliation of the basic average common shares outstanding to diluted average common shares outstanding is as follows (in thousands):
                 
    Three Months Ended  
    September 30,  
    2011     2010  
Net income
  $ 80,517     $ 75,104  
 
           
Basic weighted average common shares outstanding
    175,466       174,370  
Effect of dilutive stock options
    1,119       786  
 
           
Diluted weighted average common shares outstanding
    176,585       175,156  
 
           
 
               
Earnings per share:
               
Basic
  $ 0.46     $ 0.43  
Diluted
  $ 0.46     $ 0.43  
     Excluded from the computations above were anti-dilutive shares of 5.6 million and 6.1 million for the three months ended September 30, 2011 and 2010, respectively.