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Computation of Earnings Per Share (Tables)
 12 Months Ended
May 31, 2018
Computation Of Earnings Per Share Tables [Abstract]  
Schedule of basic and diluted earnings per common share

The calculation of basic and diluted earnings per common share for the years ended May 31 was as follows (in millions, except per share amounts):

 

 

 

2018

 

 

2017

 

 

2016

 

Basic earnings per common share:

 

 

 

 

 

 

 

 

 

 

 

 

Net earnings allocable to common shares(1)

 

$

4,566

 

 

$

2,993

 

 

$

1,818

 

Weighted-average common shares

 

 

267

 

 

 

266

 

 

 

276

 

Basic earnings per common share

 

$

17.08

 

 

$

11.24

 

 

$

6.59

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted earnings per common share:

 

 

 

 

 

 

 

 

 

 

 

 

Net earnings allocable to common shares(1)

 

$

4,566

 

 

$

2,993

 

 

$

1,818

 

Weighted-average common shares

 

 

267

 

 

 

266

 

 

 

276

 

Dilutive effect of share-based awards

 

 

5

 

 

 

4

 

 

 

3

 

Weighted-average diluted shares

 

 

272

 

 

 

270

 

 

 

279

 

Diluted earnings per common share

 

$

16.79

 

 

$

11.07

 

 

$

6.51

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Anti-dilutive options excluded from diluted earnings per common share

 

 

2.5

 

 

 

4.5

 

 

 

3.9

 

 

(1)

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