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Basis of Presentation - Additional Information (Detail)
$ in Thousands
9 Months Ended
Dec. 01, 2023
Feb. 29, 2024
USD ($)
Jointventure
Feb. 28, 2023
USD ($)
Feb. 01, 2024
May 31, 2023
USD ($)
Current Assets of Discontinued Operations          
Significant Accounting Policies [Line Items]          
Unbilled receivables         $ 3,708
Joint Venture Transactions          
Significant Accounting Policies [Line Items]          
Number of joint ventures | Jointventure   4      
Spartan | Joint Venture Transactions          
Significant Accounting Policies [Line Items]          
Percent of controlling interest by the Company   52.00%      
TWB | Joint Venture Transactions          
Significant Accounting Policies [Line Items]          
Percent of controlling interest by the Company   55.00%      
Samuel | Joint Venture Transactions          
Significant Accounting Policies [Line Items]          
Percent of controlling interest by the Company   63.00%      
Worthington Specialty Processing | Joint Venture Transactions          
Significant Accounting Policies [Line Items]          
Percent of controlling interest by the Company   51.00%      
Halo          
Significant Accounting Policies [Line Items]          
Percent of controlling interest by the Company       80.00%  
The Separation of Worthington Steel          
Significant Accounting Policies [Line Items]          
Percentage of outstanding common shares to holders as of close of business 100.00%        
Direct and incremental costs   $ 30,986 $ 15,593    
Direct and incremental costs attributed to discontinued operations   18,521 $ 12,021    
Worthington Steel | Long-term Steel Supply Agreement          
Significant Accounting Policies [Line Items]          
Purchases   20,274      
Payable   $ 10,702