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Accounts Receivable (Tables)
9 Months Ended
Feb. 28, 2023
Accounts Receivable  
Schedule of accounts receivable

February 28, 

May 31, 

    

2023

    

2022

U.S. Government contracts:

 

  

 

  

Trade receivables

$

25.5

$

31.6

Unbilled receivables

 

18.2

 

25.9

 

43.7

 

57.5

All other customers:

 

 

  

Trade receivables

 

170.9

 

136.8

Unbilled receivables

 

23.1

 

19.7

 

194.0

 

156.5

$

237.7

$

214.0