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Computation of Earnings Per Share
 6 Months Ended
Nov. 30, 2016
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
   2016 2015 2016 2015
Basic earnings per common share:            
Net earnings allocable to common shares(1) $ 700 $ 690 $ 1,414 $ 1,382
Weighted-average common shares   266   279   266   281
Basic earnings per common share $ 2.63 $ 2.47 $ 5.32 $ 4.92
              
Diluted earnings per common share:            
Net earnings allocable to common shares(1) $ 700 $ 690 $ 1,414 $ 1,382
              
Weighted-average common shares   266   279   266   281
Dilutive effect of share-based awards   4   4   4   3
Weighted-average diluted shares   270   283   270   284
Diluted earnings per common share $ 2.59 $ 2.44 $ 5.24 $ 4.86
              
Anti-dilutive options excluded from diluted             
earnings per common share   5.1   3.7   5.1   3.6
              

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