Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenue	$ 409.2	$ 344.5
Operating expenses:
Cost of sales	305.6	246.9
Selling, general and administrative expense	76.9	70.8
Research and development expense	7.9	6.3
Restructuring expense	12.7	0.4
Other expense (income), net	0.2	(0.1)
Operating income	5.9	20.2
Other (expense) income, net	(0.2)	0.3
Income from continuing operations before income taxes	2.0	17.1
Income tax provision (benefit)	0.4	(0.5)
Income from continuing operations	1.6	17.6
Loss from discontinued operations, net of income taxes	(0.4)	(0.2)
Net income	$ 1.2	$ 17.4
Basic earnings per share:
Income from continuing operations (in dollars per share)	$ 0.05	$ 0.59
Loss from discontinued operations (in dollars per share)	(0.01)	(0.01)
Net income (in dollars per share)	0.04	0.58
Diluted earnings per share:
Income from continuing operations (in dollars per share)	0.05	0.58
Loss from discontinued operations (in dollars per share)	(0.01)	(0.01)
Net income (in dollars per share)	0.04	0.57
Cash dividends declared per share (in dollars per share)	$ 0.1	$ 0.1
Interest Income (Expense), Net	$ (3.7)	$ (3.4)