Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Condensed Consolidated Statements of Operations
Net sales	$ 412.3	$ 391.6	$ 1,251.4	$ 1,190.9
Cost of sales	300.2	292.4	910.5	879.8
Gross margin	112.1	99.2	340.9	311.1
Selling, general and administrative expenses	32.9	30.3	105.7	99.4
Research and technology expenses	10.2	8.9	31.3	26.7
Other operating income				(9.5)
Operating income	69.0	60.0	203.9	194.5
Interest expense, net	1.9	2.2	5.7	8.2
Non-operating expense			1.0	1.1
Income before income taxes and equity in earnings of affiliated companies	67.1	57.8	197.2	185.2
Provision for income taxes	18.7	18.0	57.2	58.5
Income before equity in earnings of affiliated companies	48.4	39.8	140.0	126.7
Equity in earnings of affiliated companies	0.3		0.8	0.7
Net income	$ 48.7	$ 39.8	$ 140.8	$ 127.4
Basic net income per common share: (in dollars per share)	$ 0.49	$ 0.40	$ 1.41	$ 1.27
Diluted net income per common share: (in dollars per share)	$ 0.48	$ 0.39	$ 1.38	$ 1.25
Weighted average common shares outstanding:
Basic (in shares)	99.7	100.3	100.0	100.1
Diluted (in shares)	101.7	102.1	102.1	102.0