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Inventory (Tables)
 9 Months Ended
Feb. 28, 2018
Inventory  
Summary of inventories

 

 

 

 

 

February 28,

 

May 31,

 

 

 

2018

 

2017

 

Raw materials and parts

 

$
47.6

 

$
45.0

 

Work-in-process

 
35.3

 
25.8

 

Aircraft and engine parts, components and finished goods

 
389.2

 
362.6

 

 

 

 

 

 

 

 

 

$
472.1

 

$
433.4