Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net sales	$ 1,806.2	$ 1,695.2	$ 5,551.2	$ 5,464.1
Cost of sales	1,426.6	1,351.5	4,400.3	4,341.4
Gross profit	379.6	343.7	1,150.9	1,122.7
Selling, general and administrative expenses	157.7	151.0	472.6	473.1
Other (income) expense	(3.7)	29.7	10.8	67.4
Operating income	225.6	163.0	667.5	582.2
Equity in affiliates’ earnings, net of tax	(10.4)	(11.1)	(31.2)	(32.8)
Interest income	(1.3)	(1.0)	(3.3)	(3.7)
Interest expense and finance charges	8.1	5.0	26.6	32.7
Earnings before income taxes and noncontrolling interest	229.2	170.1	675.4	586.0
Provision for income taxes	56.3	64.2	173.8	190.2
Net earnings	172.9	105.9	501.6	395.8
Net earnings attributable to the noncontrolling interest, net of tax	6.1	4.8	18.7	16.1
Net earnings attributable to the noncontrolling interest, net of tax	$ 166.8	$ 101.1	$ 482.9	$ 379.7
Earnings per share — basic	$ 1.47	$ 0.88	$ 4.21	$ 3.40
Earnings per share — diluted	$ 1.45	$ 0.85	$ 4.16	$ 3.15
Weighted average shares outstanding:
Basic	113,819	114,299	114,584	111,619
Diluted	115,238	118,499	115,968	122,571
Dividends declared per share	$ 0.25	$ 0.00	$ 0.25	$ 0.00