Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2019	Sep. 27, 2018	Sep. 26, 2019	Sep. 27, 2018
Income Statement [Abstract]
Revenues	$ 1,919.9	$ 1,813.7	$ 5,903.8	$ 5,386.7
Operating costs and expenses
Cost of sales	1,647.6	1,543.1	5,029.1	4,601.3
Selling, general and administrative	53.6	37.3	173.6	154.5
Research and development	12.6	10.8	36.0	31.3
Total operating costs and expenses	1,713.8	1,591.2	5,238.7	4,787.1
Operating income	206.1	222.5	665.1	599.6
Interest expense and financing fee amortization	(23.6)	(24.2)	(66.1)	(60.3)
Other (expense) income, net	9.5	(7.4)	11.9	0.8
Income before income taxes and equity in net income of affiliate	173.0	205.7	587.1	538.5
Income tax provision	(41.7)	(36.9)	(124.7)	(99.7)
Income before equity in net income of affiliate	131.3	168.8	462.4	438.8
Equity in net income of affiliate	0.0	0.0	0.0	0.6
Net income	$ 131.3	$ 168.8	$ 462.4	$ 439.4
Earnings per share
Earnings Per Share, Basic	$ 1.27	$ 1.61	$ 4.46	$ 4.02
Diluted (in dollars per share)	$ 1.26	$ 1.59	$ 4.41	$ 3.98