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Accounts Receivable (Tables)
6 Months Ended
Nov. 30, 2022
Accounts Receivable.  
Schedule of accounts receivable

November 30, 

May 31, 

    

2022

    

2022

U.S. Government contracts:

 

  

 

  

Trade receivables

$

21.6

$

31.6

Unbilled receivables

 

32.1

 

25.9

 

53.7

 

57.5

All other customers:

 

 

  

Trade receivables

 

155.1

 

136.8

Unbilled receivables

 

16.5

 

19.7

 

171.6

 

156.5

$

225.3

$

214.0