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v3.23.1

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%

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