Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2020	Mar. 28, 2019
Income Statement [Abstract]
Revenues	$ 1,077.3	$ 1,967.8
Operating costs and expenses
Cost of sales	1,112.5	1,658.3
Selling, general and administrative	77.4	63.6
Restructuring Charges	42.6	0.0
Research and development	12.3	12.9
Total operating costs and expenses	1,244.8	1,734.8
Operating (loss) income	(167.5)	233.0
Interest expense and financing fee amortization	(32.2)	(18.8)
Other expense, net	49.0	11.0
(Loss) income before income taxes and equity in net (loss) income of affiliate	(248.7)	203.2
Income tax benefit (provision)	87.2	(40.1)
(Loss) income before equity in net (loss) income of affiliate	(161.5)	163.1
Equity in net loss of affiliate	(1.5)	0.0
Net (loss) income	$ (163.0)	$ 163.1
(Loss) earnings per share
Earnings Per Share, Basic	$ (1.57)	$ 1.57
Diluted (in dollars per share)	$ (1.57)	$ 1.55