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Computation of Earnings Per Share
 6 Months Ended
Nov. 30, 2015
Earnings Per Share [Abstract]  
Computation of Earnings Per Share

(4) Computation of Earnings Per Share

 

The calculation of basic and diluted earnings per common share for the periods ended November 30 was as follows (in millions, except per share amounts):

   Three Months Ended Six Months Ended
   2015 2014 2015 2014
Basic earnings per common share:            
Net earnings allocable to common shares(1) $ 690 $ 662 $ 1,382 $ 1,315
Weighted-average common shares   279   283   281   284
Basic earnings per common share $ 2.47 $ 2.34 $ 4.92 $ 4.63
              
Diluted earnings per common share:            
Net earnings allocable to common shares(1) $ 690 $ 662 $ 1,382 $ 1,315
              
Weighted-average common shares   279   283   281   284
Dilutive effect of share-based awards   4   4   3   4
Weighted-average diluted shares   283   287   284   288
Diluted earnings per common share $ 2.44 $ 2.31 $ 4.86 $ 4.57
              
Anti-dilutive options excluded from diluted             
earnings per common share   3.7   2.2   3.6   2.2
              

(1) Net earnings available to participating securities were immaterial in all periods presented.