Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 28, 2013	Mar. 29, 2012
Condensed Consolidated Statements of Operations [Abstract]
Net revenues	$ 1,442.2	$ 1,265.8
Operating costs and expenses
Cost of Sales	1,237.1	1,091.1
Selling, general and administrative	44.3	45.0
Severe Weather Event Charge	8.8
Research and development	7.5	7.4
Total operating costs and expenses	1,297.7	1,143.5
Operating income	144.5	122.3
Interest expense and financing fee amortization	(17.6)	(18.3)
Interest income	0.1
Other income (expense), net	(9.9)	3.5
Income before income taxes and equity in net loss of affiliates	117.1	107.5
Income tax provision	(35.7)	(33.6)
Income Before Equity In Net Loss Of Affiliates	81.4	73.9
Equity in net loss of affiliates	(0.2)	(0.3)
Net income	$ 81.2	$ 73.6
Earnings per share
Basic	$ 0.57	$ 0.52
Diluted	$ 0.57	$ 0.52