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Accounts Receivable (Tables)
9 Months Ended
Feb. 28, 2022
Accounts Receivable  
Schedule of accounts receivable

February 28, 

May 31, 

    

2022

    

2021

U.S. Government contracts:

 

  

 

  

Trade receivables

$

33.6

$

24.1

Unbilled receivables

 

16.9

 

25.2

 

50.5

 

49.3

All other customers:

 

 

  

Trade receivables

 

144.7

 

104.9

Unbilled receivables

 

14.1

 

12.5

 

158.8

 

117.4

$

209.3

$

166.7