CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Sales	$ 2,184.7	$ 1,961.1	$ 1,585.9
Operating expenses:
Cost of goods sold	1,748.0	1,573.9	1,349.9
Selling and administration	168.6	160.6	134.4
Restructuring charges	8.5	10.7	34.2
Acquisition costs	8.3	0.8	0
Other operating income	7.6	8.8	2.5
Operating income	258.9	223.9	69.9
Earnings of non-consolidated affiliates	3.0	9.6	29.9
Interest expense	26.4	30.4	25.4
Interest income	1.0	1.2	1.0
Other (expense) income	(11.3)	175.1	1.5
Income before taxes	225.2	379.4	76.9
Income tax provision	75.6	137.7	12.1
Net income	$ 149.6	$ 241.7	$ 64.8
Net income per common share:
Basic	$ 1.87	$ 3.02	$ 0.82
Diluted	$ 1.85	$ 2.99	$ 0.81
Average common shares outstanding:
Basic	80.1	80.0	79.2
Diluted	81.0	80.8	79.9