v3.26.1
Leases (Components of Lease Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Leases [Abstract]      
Fixed payment operating lease expense $ 19.8 $ 27.7 $ 28.7
Variable payment operating lease expense 4.1 4.8 5.8
Short-term lease expense $ 0.0 $ 0.0 $ 0.0