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Inventories (Tables)
3 Months Ended
Aug. 31, 2022
Inventories  
Summary of inventories

August 31, 

    

May 31, 

    

2022

    

2022

Aircraft and engine parts, components and finished goods

$

496.2

$

465.9

Raw materials and parts

 

54.6

 

62.2

Work-in-process

25.0

22.4

$

575.8

$

550.5