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Earnings Per Share (Notes)
 12 Months Ended
Apr. 30, 2016
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
EARNINGS PER SHARE
We calculate basic earnings per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share further includes the dilutive effect of stock-based compensation awards. We calculate that dilutive effect using the “treasury stock method” (as defined by GAAP).
The following table presents information concerning basic and diluted earnings per share: 
 
2014
 
2015
 
2016
Net income available to common stockholders
$
659

 
$
684

 
$
1,067

Share data (in thousands):
 
 
 
 
 
Basic average common shares outstanding
213,454

 
211,593

 
202,977

Dilutive effect of stock-based awards
1,628

 
1,490

 
1,303

Diluted average common shares outstanding
215,082

 
213,083

 
204,280

 
 
 
 
 
 
Basic earnings per share
$
3.08

 
$
3.23

 
$
5.26

Diluted earnings per share
$
3.06

 
$
3.21

 
$
5.22


We excluded common stock-based awards for approximately 309,000 shares, 361,000 shares, and 453,000 shares from the calculation of diluted earnings per share for 2014, 2015, and 2016, respectively, because they were not dilutive for those periods under the treasury stock method.