CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Sales	$ 1,961.1	$ 1,585.9	$ 1,531.5
Operating expenses:
Cost of goods sold	1,573.9	1,349.9	1,222.7
Selling and administration	161.4	134.4	135.3
Restructuring charges	10.7	34.2	0
Other operating income	8.8	2.5	9.1
Operating income	223.9	69.9	182.6
Earnings of non-consolidated affiliates	9.6	29.9	37.7
Interest expense	30.4	25.4	11.6
Interest income	1.2	1.0	1.1
Other income	175.1	1.5	0.1
Income before taxes	379.4	76.9	209.9
Income tax provision	137.7	12.1	74.2
Net income	$ 241.7	$ 64.8	$ 135.7
Net income per common share:
Basic	$ 3.02	$ 0.82	$ 1.74
Diluted	$ 2.99	$ 0.81	$ 1.73
Average common shares outstanding:
Basic	80.0	79.2	78.1
Diluted	80.8	79.9	78.3