Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Sales:
Sales	$ 403.6	$ 560.9	$ 804.4	$ 1,102.4
Cost and operating expenses:
Provision for doubtful accounts	4.4	0.7	4.4	1.4
Selling, general and administrative	43.4	57.1	88.7	115.2
Total cost and operating expenses	381.9	532.8	779.4	1,051.5
Loss from joint ventures	(0.1)		(0.2)
Operating income	21.6	28.1	24.8	50.9
Loss on sale of business			(19.5)
Other expenses, net	(0.7)	(0.2)	(0.5)	(0.4)
Interest expense	(1.3)	(1.9)	(3.0)	(4.1)
Interest income		0.1	0.1	0.2
Income from continuing operations before provision for income taxes	19.6	26.1	1.9	46.6
Provision for income taxes	5.2	6.0	1.4	9.4
Income from continuing operations	14.4	20.1	0.5	37.2
Loss from discontinued operations, net of tax	(6.2)	(5.9)	(6.8)	(18.6)
Net income (loss)	$ 8.2	$ 14.2	$ (6.3)	$ 18.6
Earnings (Loss) per share - basic:
Earnings from continuing operations	$ 0.41	$ 0.58	$ 0.01	$ 1.07
Loss from discontinued operations	(0.18)	(0.17)	(0.20)	(0.54)
Earnings (Loss) per share - basic	0.23	0.41	(0.19)	0.53
Earnings (Loss) per share - diluted:
Earnings from continuing operations	0.41	0.57	0.01	1.06
Loss from discontinued operations	(0.18)	(0.17)	(0.19)	(0.53)
Earnings (Loss) per share - diluted	$ 0.23	$ 0.40	$ (0.18)	$ 0.53
Products
Sales:
Sales	$ 233.1	$ 293.0	$ 469.4	$ 568.1
Cost and operating expenses:
Cost	194.3	242.0	398.8	462.1
Services
Sales:
Sales	170.5	267.9	335.0	534.3
Cost and operating expenses:
Cost	$ 139.8	$ 233.0	$ 287.5	$ 472.8