CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income	$ 78.7	$ 35.8	$ 4.4
Other comprehensive income (loss), net of tax:
Currency translation adjustments	(6.7)	5.9	0.1
Unrecognized pension and post retirement costs, net of tax benefit (expense) of $1.4 in 2022, $5.2 in 2021, and $(1.0) in 2020	5.4	20.4	(3.8)
Total other comprehensive income (loss), net of tax	(1.3)	26.3	(3.7)
Comprehensive income	$ 77.4	$ 62.1	$ 0.7