Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended	12 Months Ended
	May 29, 2024	May 31, 2024 USD ($)	May 31, 2024 USD ($)	May 31, 2023 USD ($)	May 31, 2022 USD ($)	Feb. 01, 2024	Nov. 30, 2023 Jointventure
Description of Business and Summary of Significant Accounting Policies [Line Items]
Impairment charge of long-lived assets			$ 32,975,000	$ 484,000
Contract assets		$ 0	0
Unbilled receivables		0	0
Derivative financial instruments, credit losses			0
Allowance for doubtful accounts increase (decrease)			(460,000)
Receivables, allowances		$ 343,000	343,000	803,000
Depreciation Expenses			36,793,000	34,017,000	$ 32,397,000
Advertising Expenses			$ 29,618	$ 28,365	$ 21,011
Maximum
Description of Business and Summary of Significant Accounting Policies [Line Items]
Period allowed for payment of dues to customers			60 days
Maximum | Building and Building Improvements
Description of Business and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life		40 years	40 years
Maximum | Machinery and Equipment
Description of Business and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life		20 years	20 years
Minimum
Description of Business and Summary of Significant Accounting Policies [Line Items]
Period allowed for payment of dues to customers			30 days
Minimum | Building and Building Improvements
Description of Business and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life		10 years	10 years
Minimum | Machinery and Equipment
Description of Business and Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life		3 years	3 years
Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Number of joint ventures | Jointventure							4
Hexagon
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of noncontrolling interest	49.00%
Percentage of sale of nominal share capital of former sustainable energy solutions	51.00%
Percentage of shares held by members of existing management team of joint venture	2.00%
Impairment charge of long-lived assets		$ 32,203,000
Deconsolidation, one-time loss			$ (30,502,000)
Hexagon | Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of noncontrolling interest	49.00%
Spartan | Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company							52.00%
TWB | Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company							55.00%
Samuel | Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company							63.00%
Worthington Specialty Processing | Joint Venture Transactions
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company							51.00%
Halo
Description of Business and Summary of Significant Accounting Policies [Line Items]
Percent of controlling interest by the Company						80.00%