CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (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
Income Statement [Abstract]
Net sales	$ 344.5	$ 324.8	$ 683.9	$ 641.1
Cost of goods and services sold	233.6	226.1	461.3	441.3
Gross profit	110.9	98.7	222.6	199.8
Research and development	9.5	8.2	18.6	16.5
Selling, general and administrative expenses	59.7	54.4	118.7	105.7
Restructuring and other items (Note 2)	(0.8)	0.5	(0.6)	0.3
Operating profit	42.5	35.6	85.9	77.3
Loss on debt extinguishment	0	11.6	0.2	11.6
Interest expense	4.1	4.6	8.7	8.8
Interest income	0.4	0.6	1.0	1.0
Income before income taxes	38.8	20.0	78.0	57.9
Income tax expense	10.3	6.5	18.9	16.4
Equity in net income of affiliated companies	1.7	2.1	2.8	3.3
Net income	$ 30.2	$ 15.6	$ 61.9	$ 44.8
Net income per share:
Basic (in dollars per share)	$ 0.87	$ 0.46	$ 1.79	$ 1.32
Diluted (in dollars per share)	$ 0.86	$ 0.45	$ 1.76	$ 1.27
Weighted average shares outstanding:
Basic (in shares)	34.7	34.0	34.6	33.9
Diluted (in shares)	35.4	36.6	35.3	36.9
Dividends declared per share	$ 0.19	$ 0.18	$ 0.38	$ 0.36