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Inventory (Tables)
6 Months Ended
Nov. 30, 2019
Inventory  
Summary of inventories

    

November 30, 

    

May 31, 

2019

2019

Aircraft and engine parts, components and finished goods

$

518.9

$

467.9

Raw materials and parts

 

43.6

 

41.8

Work-in-process

17.9

14.0

$

580.4

$

523.7