Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 8.2	$ 14.2	$ (6.3)	$ 18.6
Other comprehensive income, net of tax:
Currency translation adjustments	1.1	0.5	2.3	0.4
Pension and other post-retirement plans, net of tax of ($0.5) and $0.1 for the three months ended November 30, 2020 and 2019, respectively, and ($0.4) and $0.1 for the six months ended November 30, 2020 and 2019, respectively	(1.0)	0.3	(0.7)	0.5
Other comprehensive income, net of tax	0.1	0.8	1.6	0.9
Comprehensive income	$ 8.3	$ 15.0	$ (4.7)	$ 19.5