Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2026	May 31, 2025	May 31, 2024
Worthington Steel \| Long Term Steel Supply Agreement
Related Party Transaction [Line Items]
Purchases from affiliates	$ 137,077	$ 113,400
Accounts payable related to purchases from related party	$ 6,904	$ 9,099
The Separation of Worthington Steel
Related Party Transaction [Line Items]
Direct and incremental costs			$ 31,226
Direct and incremental costs attributed to discontinued operations			$ 18,521