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Debt (Tables)
6 Months Ended
Nov. 30, 2021
Debt Disclosure [Abstract]  
Schedule of Debt
The following table summarizes the carrying value of the Company's debt as of the dates indicated:
 November 30, 2021May 31, 2021November 30, 2020
US Revolving Credit Agreement$— $175.0 $175.0 
Unsecured lines of credit7.5 7.9 8.4 
UK Loan6.8 7.3 11.4 
Total debt$14.3 $190.2 $194.8 
Less lines of credit, short-term debt and current portion of long-term debt(14.3)(182.9)(19.8)
Total long-term debt$ $7.3 $175.0