Related Party Transactions - Schedule of reconciliation of total net transfers to and from parent to the corresponding amount presented in the combined statement of cash flows (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2022	Aug. 31, 2022	Nov. 30, 2023	Nov. 30, 2022
Related Party Transaction [Line Items]
Total net transfers from Worthington Enterprises, Inc. per combined statements of equity	$ (84.9)	$ 40.8	$ (72.2)	$ 38.9
Less: depreciation expense allocated from Parent	16.4		17.8		$ 33.3	$ 35.5
Stock-based compensation	3.3		2.5		6.1	4.8
Parent
Related Party Transaction [Line Items]
Total net transfers from Worthington Enterprises, Inc. per combined statements of equity	(84.9)		(72.2)		(44.1)	(33.3)
Less: depreciation expense allocated from Parent	0.6		0.7		1.2	1.3
Stock-based compensation	3.3		2.4		6.1	4.6
Total net transfers to Worthington Enterprises, Inc. per combined statement of cash flows	$ (88.8)		$ (75.3)		$ (51.4)	$ (39.2)