v3.26.3
Restructuring and Other (Income) Expense, Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other (Income) Expense, Net (Detail) - USD ($)
$ in Millions
 3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Restructuring Cost and Reserve [Line Items]    
Beginning Balance $ 0.4  
Acquisition Activity 3.2  
Expense (Income) 1.3 $ (1.0)
Payments (3.0)  
Adjustments (0.1)  
Ending Balance 1.8  
Net gain on sale of assets (4.9) (1.0)
Restructuring and other (income) expense, net (3.6) (1.0)
Early Retirement and Severance    
Restructuring Cost and Reserve [Line Items]    
Beginning Balance 0.4 2.1
Acquisition Activity 3.2  
Expense (Income) $ 0.5  
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring and other (income) expense, net  
Payments $ (2.2) (0.8)
Adjustments (0.1)  
Ending Balance 1.8 $ 1.3
Facility exit and other costs    
Restructuring Cost and Reserve [Line Items]    
Expense (Income) $ 0.8  
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring and other (income) expense, net  
Payments $ (0.8)