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Inventory (Tables)
 6 Months Ended
Nov. 30, 2017
Inventory  
Summary of inventories

 

 

 

 

November 30,

 

May 31,

 

 

 

2017

 

2017

 

Raw materials and parts

 

$
47.7

 

$
45.0

 

Work-in-process

 
31.3

 
25.8

 

Aircraft and engine parts, components and finished goods

 
400.4

 
412.3

 

 

 

 

 

 

 

 

 

$
479.4

 

$
483.1