Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 26, 2013	Jun. 27, 2013	Mar. 28, 2013	Dec. 31, 2012	Sep. 27, 2012	Jun. 28, 2012	Mar. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net Revenues	$ 1,494.4	$ 1,503.7	$ 1,520.7	$ 1,442.2	$ 1,425.6	$ 1,365.3	$ 1,341.0	$ 1,265.8	$ 5,961.0	$ 5,397.7	$ 4,863.8
Operating costs and expenses
Cost of sales									6,059.5	5,245.3	4,312.1
Selling, general and administrative									200.8	172.2	159.9
Impact from severe weather event					18.1	218.8	54.5		30.3	(146.2)	0
Research and development									34.7	34.1	35.7
Total operating costs and expenses									6,325.3	5,305.4	4,507.7
Operating (loss) income	(320.8)	50.5	(238.5)	144.5	98.0	(210.5)	82.5	122.3	(364.3)	92.3	356.1
Interest expense and financing fee amortization									(70.1)	(82.9)	(77.5)
Interest income									0.3	0.2	0.3
Other income, net									3.3	1.8	1.4
(Loss) income before income taxes and equity in net income (loss) of affiliates									(430.8)	11.4	280.3
Income tax (provision) benefit									(191.1)	24.1	(86.9)
(Loss) income before equity in net income (loss) of affiliates									(621.9)	35.5	193.4
Equity in net income (loss) of affiliates									0.5	(0.7)	(1.0)
Net (loss) income	$ (586.9)	$ 93.7	$ (209.4)	$ 81.2	$ 60.7	$ (134.4)	$ 34.9	$ 73.6	$ (621.4)	$ 34.8	$ 192.4
(Loss) earnings per share
Basic (in dollars per share)	$ (4.15)	$ 0.66	$ (1.48)	$ 0.57	$ 0.43	$ (0.96)	$ 0.25	$ 0.52	$ (4.40)	$ 0.24	$ 1.36
Diluted (in dollars per share)	$ (4.15)	$ 0.65	$ (1.48)	$ 0.57	$ 0.43	$ (0.96)	$ 0.24	$ 0.52	$ (4.40)	$ 0.24	$ 1.35