Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Apr. 02, 2015
Revenues [Abstract]
Net revenues	$ 1,681.6	$ 1,742.2
Operating costs and expenses
Cost of sales	1,359.0	1,448.3
Selling, general and administrative	50.0	51.6
Research and development	6.1	7.0
Total operating costs and expenses	1,415.1	1,506.9
Operating income	266.5	235.3
Interest expense and financing fee amortization	(11.4)	(17.9)
Other expense, net	2.2	6.4
Income before income taxes and equity in net income of affiliate	252.9	211.0
Income tax provision	(81.9)	(29.4)
Income before equity in net income of affiliate	171.0	181.6
Equity in net income of affiliate	0.6	0.3
Net income	$ 171.6	$ 181.9
Earnings per share
Basic (in dollars per share)	$ 1.30	$ 1.31
Diluted (in dollars per share)	$ 1.29	$ 1.30