Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Share data in Thousands, 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	$ 1,893.9	$ 1,856.4	$ 3,745.0	$ 3,768.9
Cost of sales	1,497.3	1,473.2	2,973.7	2,989.9
Gross profit	396.6	383.2	771.3	779.0
Selling, general and administrative expenses	155.6	153.1	314.9	322.1
Other (income) expense	(2.4)	36.6	14.5	37.7
Operating income	243.4	193.5	441.9	419.2
Equity in affiliates’ earnings, net of tax	(11.1)	(12.5)	(20.8)	(21.7)
Interest income	(1.0)	(1.3)	(2.0)	(2.7)
Interest expense and finance charges	8.8	12.6	18.5	27.7
Earnings before income taxes and noncontrolling interest	246.7	194.7	446.2	415.9
Provision for income taxes	66.6	68.5	117.5	126.0
Net earnings	180.1	126.2	328.7	289.9
Net earnings attributable to the noncontrolling interest, net of tax	6.0	5.6	12.6	11.3
Net earnings attributable to the noncontrolling interest, net of tax	$ 174.1	$ 120.6	$ 316.1	$ 278.6
Earnings per share — basic	$ 1.52	$ 1.08	$ 2.75	$ 2.53
Earnings per share — diluted	$ 1.50	$ 1.00	$ 2.72	$ 2.28
Weighted average shares outstanding:
Basic	114,748	112,139	114,967	110,280
Diluted	116,101	121,473	116,333	124,608