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Earnings Per Share
6 Months Ended
Jun. 30, 2011
Earnings Per Share  
Earnings Per Share
NOTE 20. EARNINGS PER SHARE
Earnings per share components may not add due to rounding.
The following table is a reconciliation of net earnings to net earnings attributable to common shares used in our basic and diluted EPS calculations for the three month and six month periods ended June 30, 2011 and 2010:
                                 
    Three Months Ended     Six Months Ended  
    June 30     June 30  
    2011     2010     2011     2010  
Net earnings
  $ 37.9     $ 26.8     $ 51.4     $ 7.4  
Net earnings allocated to non-vested share awards
    (0.3 )           (0.4 )      
 
                       
Net earnings attributable to common shares
  $ 37.6     $ 26.8     $ 51.0     $ 7.4  
 
                       
The following table is a reconciliation of basic shares outstanding to diluted shares outstanding for the three month and six month periods ended June 30, 2011 and 2010:
                                 
    Three Months Ended     Six Months Ended  
    June 30     June 30  
millions of shares   2011     2010     2011     2010  
Basic shares outstanding
    58.3       57.6       58.2       57.6  
Dilutive effect of stock option awards
    0.6       0.5       0.6       0.5  
 
                       
Diluted shares outstanding
    58.9       58.1       58.8       58.1