CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income	$ 7.5	$ 15.6	$ 56.5
Other comprehensive income (loss), net of tax:
Currency translation adjustments, net of tax	(2.4)	2.0	(0.6)
Unrecognized pension and post retirement costs, net of tax expense (benefit) of $(1.7) in 2019, $2.4 in 2018, and $2.8 in 2017	(6.5)	5.9	5.1
Total other comprehensive income (loss), net of tax	(8.9)	7.9	4.5
Comprehensive income (loss)	$ (1.4)	$ 23.5	$ 61.0