CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statement of Income [Abstract]
Net sales	$ 307.9	$ 281.8	$ 603.3	$ 556.5
Cost of goods and services sold	223.3	198.6	430.7	391.1
Gross profit	84.6	83.2	172.6	165.4
Research and development	7.3	5.7	14.2	11.1
Selling, general and administrative expenses	48.5	45.8	99.2	92.4
Restructuring and other items (Note 2)	1.0	1.2	2.7	2.5
Operating profit	27.8	30.5	56.5	59.4
Interest expense	4.6	3.9	9.3	7.9
Interest income	(0.3)	(0.1)	(0.5)	(0.2)
Income before income taxes	23.5	26.7	47.7	51.7
Income tax expense	5.3	6.6	11.3	12.7
Equity in net income of affiliated companies	1.9	1.6	3.3	2.6
Net income	$ 20.1	$ 21.7	$ 39.7	$ 41.6
Net income per share
Basic	$ 0.60	$ 0.65	$ 1.18	$ 1.25
Diluted	$ 0.57	$ 0.62	$ 1.13	$ 1.19
Weighted average shares outstanding:
Basic	33.6	33.3	33.5	33.2
Diluted	37.0	36.7	36.9	36.6
Dividends declared per share	$ 0.17	$ 0.16	$ 0.34	$ 0.32