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Accounts Receivable (Tables)
3 Months Ended
Aug. 31, 2022
Accounts Receivable.  
Schedule of accounts receivable

August 31, 

May 31, 

    

2022

    

2022

U.S. Government contracts:

 

  

 

  

Trade receivables

$

24.1

$

31.6

Unbilled receivables

 

15.2

 

25.9

 

39.3

 

57.5

All other customers:

 

 

  

Trade receivables

 

148.0

 

136.8

Unbilled receivables

 

33.5

 

19.7

 

181.5

 

156.5

$

220.8

$

214.0