v3.26.3
Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss Changes by Component, Net of Related Tax (Detail) - USD ($)
$ in Millions
 3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 2,092.9 $ 2,071.2
Ending Balance 2,086.4 2,118.6
Accumulated Other Comprehensive Loss    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (13.6) (28.9)
Ending Balance (12.3) (23.5)
Foreign Currency Translation Adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (13.2) (27.6)
Other comprehensive gain (loss) before reclassifications 0.9 5.9
Amounts reclassified from accumulated other comprehensive loss 0.0 (0.1)
Ending Balance (12.3) (21.8)
Fair Value of Derivatives Changes    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (0.4) (1.3)
Other comprehensive gain (loss) before reclassifications 0.2 (0.3)
Amounts reclassified from accumulated other comprehensive loss 0.2 (0.1)
Ending Balance $ (0.0) $ (1.7)