Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2017	Nov. 30, 2016
Sales:
Sales from products	$ 253.9	$ 231.3	$ 498.6	$ 445.2
Sales from services	195.8	192.5	390.3	383.4
Total sales	449.7	423.8	888.9	828.6
Cost and operating expenses:
Cost of products	203.2	197.3	402.8	376.8
Cost of services	174.0	160.3	349.1	324.1
Cost of services - impairments and other charges	51.6		51.6
Selling, general and administrative	52.2	46.3	100.2	91.1
Selling, general and administrative - impairments	2.6		2.6
Total costs and operating expenses	483.6	403.9	906.3	792.0
Operating income (loss)	(33.9)	19.9	(17.4)	36.6
Interest expense	(2.0)	(1.2)	(3.7)	(2.5)
Interest income	0.1	0.1	0.1	0.1
Income (Loss) from continuing operations before provision for income taxes (benefit)	(35.8)	18.8	(21.0)	34.2
Provision for income taxes (benefit)	(13.3)	6.7	(9.1)	12.2
Income (Loss) from continuing operations	(22.5)	12.1	(11.9)	22.0
Loss from discontinued operations	(0.1)		(0.1)	(0.4)
Net income (loss)	$ (22.6)	$ 12.1	$ (12.0)	$ 21.6
Earnings (Loss) per share - basic:
Earnings (Loss) from continuing operations	$ (0.66)	$ 0.35	$ (0.35)	$ 0.64
Earnings (Loss) from discontinued operations				(0.01)
Earnings (Loss) per share - basic	(0.66)	0.35	(0.35)	0.63
Earnings (Loss) per share - diluted:
Earnings (Loss) from continuing operations	(0.66)	0.35	(0.35)	0.64
Earnings (Loss) from discontinued operations				(0.01)
Earnings (Loss) per share - diluted	$ (0.66)	$ 0.35	$ (0.35)	$ 0.63