Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements of Operations
Net sales	$ 422.6	$ 399.2	$ 839.1	$ 799.3
Cost of sales	305.8	293.7	610.3	587.4
Gross margin	116.8	105.5	228.8	211.9
Selling, general and administrative expenses	34.8	32.5	72.8	69.1
Research and technology expenses	10.1	8.6	21.1	17.8
Other operating (income)		(9.5)		(9.5)
Operating income	71.9	73.9	134.9	134.5
Interest expense, net	2.1	3.0	3.8	6.0
Non-operating expense	1.0	1.1	1.0	1.1
Income before income taxes and equity in earnings of affiliated companies	68.8	69.8	130.1	127.4
Provision for income taxes	20.6	22.1	38.5	40.5
Income before equity in earnings of affiliated companies	48.2	47.7	91.6	86.9
Equity in earnings of affiliated companies	0.3	0.3	0.5	0.7
Net income	$ 48.5	$ 48.0	$ 92.1	$ 87.6
Basic net income per common share: (in dollars per share)	$ 0.49	$ 0.48	$ 0.92	$ 0.88
Diluted net income per common share: (in dollars per share)	$ 0.48	$ 0.47	$ 0.90	$ 0.86
Weighted average common shares outstanding:
Basic (in shares)	100.0	100.2	100.2	100.0
Diluted (in shares)	101.8	102.0	102.0	101.9