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Inventories (Tables)
9 Months Ended
Feb. 28, 2021
Inventories  
Summary of inventories

February 28, 

    

May 31, 

    

2021

2020

Aircraft and engine parts, components and finished goods

$

494.0

$

556.6

Raw materials and parts

 

49.7

 

45.9

Work-in-process

20.5

20.6

$

564.2

$

623.1