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Computation of Earnings Per Share
 6 Months Ended
Nov. 30, 2014
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
   2014 2013 2014 2013
Basic earnings per common share:            
Net earnings allocable to common shares(1) $ 615 $ 499 $ 1,220 $ 988
Weighted-average common shares   283   315   284   316
Basic earnings per common share $ 2.17 $ 1.58 $ 4.30 $ 3.13
              
Diluted earnings per common share:            
Net earnings allocable to common shares(1) $ 615 $ 499 $ 1,220 $ 988
              
Weighted-average common shares   283   315   284   316
Dilutive effect of share-based awards   4   4   4   3
Weighted-average diluted shares   287   319   288   319
Diluted earnings per common share $ 2.14 $ 1.57 $ 4.24 $ 3.10
              
Anti-dilutive options excluded from diluted             
earnings per common share   2.2   2.5   2.2   6.2
              

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