Basis of Presentation - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Feb. 28, 2023 USD ($) Jointventure	Feb. 28, 2023 USD ($) Jointventure
Significant Accounting Policies [Line Items]
Separation costs | $	$ 6,347,000	$ 15,593,000
Joint Venture Transactions
Significant Accounting Policies [Line Items]
Number of operating joint ventures | Jointventure	3	3
Spartan | Joint Venture Transactions
Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company	52.00%	52.00%
TWB | Joint Venture Transactions
Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company	55.00%	55.00%
Samuel | Joint Venture Transactions
Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company	63.00%	63.00%
Worthington Specialty Processing | Joint Venture Transactions
Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company	51.00%	51.00%