CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Product revenue	$ 1,376.8	$ 1,133.1	$ 957.8
Service revenue	258.3	217.4	149.5
Total revenue	1,635.1	1,350.5	1,107.3
Operating expenses:
Cost of products	961.1	803.8	676.2
Cost of services	203.3	166.0	114.2
Selling, general and administrative expense	294.4	236.7	207.0
Research and development expense	28.7	23.6	18.2
Restructuring expense	1.7	12.3	0.0
Other expense, net	0.1	4.7	2.7
Operating income:	145.8	103.4	89.0
Interest expense	(13.6)	(9.4)	(6.8)
Income from continuing operations before income taxes	132.2	94.0	82.2
Provision for income taxes	50.1	26.0	26.2
Income from continuing operations	82.1	68.0	56.0
Loss from discontinued operations, net of income taxes	1.6	0.4	0.1
Net income	$ 80.5	$ 67.6	$ 55.9
Basic earnings per share:
Income from continuing operations (in Dollars per share)	$ 2.61	$ 2.31	$ 1.90
Loss from discontinued operations (in Dollars per share)	(0.05)	(0.01)	(0.01)
Net income (in Dollars per share)	2.56	2.30	1.89
Diluted earnings per share:
Income from continuing operations (in Dollars per share)	2.58	2.28	1.88
Loss from discontinued operations (in Dollars per share)	(0.05)	(0.01)	0.00
Net income (in Dollars per share)	2.53	2.27	1.88
Dividends declared per share (in Dollars per share)	$ 0.40	$ 0.40	$ 0.37
Weighted average shares outstanding:
Basic (in Shares)	31.4	29.4	29.5
Diluted (in Shares)	31.9	29.8	29.8