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Inventories (Tables)
6 Months Ended
Nov. 30, 2021
Inventories  
Summary of inventories

November 30, 

    

May 31, 

    

2021

    

2021

Aircraft and engine parts, components and finished goods

$

453.1

$

468.4

Raw materials and parts

 

58.7

 

53.0

Work-in-process

19.9

19.2

$

531.7

$

540.6