v3.26.1
Related Party Transactions - Additional Information (Detail)
€ in Millions
12 Months Ended
May 31, 2026
USD ($)
May 31, 2026
EUR (€)
May 31, 2025
USD ($)
May 31, 2024
USD ($)
Jun. 08, 2021
Related Party Transaction [Line Items]          
Selling, general and administrative expense $ 297,400,000   $ 231,600,000 $ 224,400,000  
Net sales 3,443,800,000   3,093,300,000 3,430,600,000  
Net transfers from (to) the former parent excluding distribution 150,000,000        
Current maturities of long-term debt due to Worthington Enterprises, Inc. 27,000,000   0    
Former Parent          
Related Party Transaction [Line Items]          
Selling, general and administrative expense 0   0 38,500,000  
Net sales 76,000,000   65,400,000 82,100,000  
Accounts receivable 7,000,000   9,200,000    
Affiliate Companies          
Related Party Transaction [Line Items]          
Accounts receivable 0   0    
Account Payables 0   0    
Affiliated Companies and Individuals          
Related Party Transaction [Line Items]          
Net sales 18,100,000   22,600,000 14,700,000  
Purchases from affiliates 9,000,000   $ 3,200,000 $ 17,400,000  
One time bonus paid to key individuals $ 4,600,000 € 4.0      
TWB Term Loan          
Related Party Transaction [Line Items]          
Debt, interest rate         5.00%
TWB Term Loan | Former Parent          
Related Party Transaction [Line Items]          
Debt, interest rate       5.00%  
Interest expense       $ 500,000