Discontinued Operations - Summary of Financial Results from Discontinued Operations of Worthington Steel (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Feb. 29, 2024	Feb. 29, 2024
Other income (expense):
Net earnings attributable to noncontrolling interest		$ 83,106
Net earnings attributable to controlling interest	$ 0	0
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		1,670,027
Cost of goods sold		1,481,731
Gross profit		188,296
Selling, general and administrative expense		74,908
Impairment of long-lived assets		1,401
Separation costs		18,521
Operating income		93,466
Other income (expense):
Miscellaneous income, net		1,016
Interest expense, net		(3,706)
Equity in net income of unconsolidated affiliate		12,735
Earnings before income taxes		103,511
Income tax expense		20,405
Net earnings		83,106
Net earnings attributable to noncontrolling interest		7,460
Net earnings attributable to controlling interest		$ 75,646