Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ (30.6)	$ 23.8	$ (12.6)	$ 23.2
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(3.3)	(0.4)	(1.8)	0.1
Pension and other post-retirement plans, net of tax				14.9
Other comprehensive income (loss), net of tax	(3.3)	(0.4)	(1.8)	15.0
Comprehensive income (loss)	$ (33.9)	$ 23.4	$ (14.4)	$ 38.2