Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net sales	$ 462.1	$ 503.6
Cost of sales	247.0	264.4
Gross profit	215.1	239.2
Selling, general and administrative expenses	82.6	73.4
Engineering - research and development	21.8	22.2
Loss associated with impairment of long-lived assets		1.3
Operating income	110.7	142.3
Interest income	0.2	0.2
Interest expense	(34.3)	(37.1)
Other (expense) income, net	(0.1)	2.8
Income before income taxes	76.5	108.2
Income tax expense	(28.2)	(39.8)
Net income	$ 48.3	$ 68.4
Basic earnings per share attributable to common stockholders	$ 0.28	$ 0.38
Diluted earnings per share attributable to common stockholders	0.28	0.38
Dividends declared per common share	$ 0.15	$ 0.15
Comprehensive income, net of tax	$ 50.9	$ 56.5