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Accounting Policies (Tables)
12 Months Ended
Apr. 30, 2015
Accounting Policies [Abstract]  
Share based payments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  

Year Ended April 30,

 

 

  

2015

 

  

2014

 

  

2013

 

Share-based compensation expense included in selling, distribution, and administrative expenses

  

$

22.3

  

  

$

22.1

  

  

$

20.5

  

Share-based compensation expense included in other special project costs

  

 

1.2

  

  

 

0.8

  

  

 

0.8

  

 

  

 

 

 

  

 

 

 

  

 

 

 

Total share-based compensation expense

 

$

23.5

  

 

$

22.9

  

 

$

21.3

  

 

  

 

 

 

  

 

 

 

  

 

 

 

Related income tax benefit

 

$

8.0

  

 

$

7.7

  

 

$

7.1