Annual report pursuant to Section 13 and 15(d)

Leases (Components of Lease Expense) (Details)

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Leases (Components of Lease Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2022
May 31, 2021
May 31, 2020
Leases [Abstract]      
Fixed payment operating lease expense $ 27.2 $ 34.6 $ 38.2
Variable payment operating lease expense $ 6.9 8.3 8.6
Short-term lease expense   $ 0.1 $ 0.2