Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Sales:
Sales from products	$ 243.3	$ 228.7	$ 688.5	$ 684.8
Sales from services	203.4	183.4	586.8	545.5
Total sales	446.7	412.1	1,275.3	1,230.3
Cost and operating expenses:
Cost of products	203.5	189.8	580.3	576.2
Cost of services	174.2	163.0	498.3	481.8
Selling, general and administrative	47.4	43.1	138.5	126.2
Total costs and operating expenses	425.1	395.9	1,217.1	1,184.2
Loss from joint ventures	(0.2)		(0.2)	(0.4)
Operating income	21.4	16.2	58.0	45.7
Loss on extinguishment of debt				(0.4)
Interest expense	(1.5)	(1.7)	(4.0)	(5.2)
Interest income	0.1	0.1	0.2	0.2
Income from continuing operations before provision for income taxes	20.0	14.6	54.2	40.3
Provision for income taxes	6.9	4.7	19.1	13.8
Income from continuing operations	13.1	9.9	35.1	26.5
Discontinued operations:
Operating loss	(0.1)	(1.3)	(0.7)	(7.3)
Gain from contingent consideration				27.7
Provision for income taxes (benefit)	(0.7)	3.8	(0.9)	11.2
Income (Loss) from discontinued operations	0.6	(5.1)	0.2	9.2
Net income	$ 13.7	$ 4.8	$ 35.3	$ 35.7
Earnings per share - basic:
Earnings from continuing operations	$ 0.39	$ 0.29	$ 1.03	$ 0.76
Earnings (Loss) from discontinued operations	0.02	(0.15)	0.01	0.27
Earnings per share - basic	0.41	0.14	1.04	1.03
Earnings per share - diluted:
Earnings from continuing operations	0.38	0.29	1.02	0.76
Earnings (Loss) from discontinued operations	0.02	(0.15)	0.01	0.27
Earnings per share - diluted	$ 0.40	$ 0.14	$ 1.03	$ 1.03