Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ (8.9)	$ 14.0	$ (21.5)	$ 37.2
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(1.5)	(0.2)	(3.3)	(0.1)
Pension and other post-retirement plans, net of tax				14.9
Other comprehensive income (loss), net of tax	(1.5)	(0.2)	(3.3)	14.8
Comprehensive income (loss)	$ (10.4)	$ 13.8	$ (24.8)	$ 52.0