Revenue Recognition - Schedule of ASC 606 Impact on Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 29, 2018		Sep. 30, 2017	Sep. 29, 2018		Sep. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 1,133.1	[1]	$ 1,231.3	$ 3,536.5	[1]	$ 3,663.1
Cost of sales	708.3		733.5	2,148.0		2,196.4
Gross profit	424.8		497.8	1,388.5		1,466.7
Operating income (loss)	(122.0)		162.4	129.0		439.6
Income tax expense (benefit)	(11.5)		84.2	37.3		101.8
Net income (loss)	$ (67.5)		$ 44.5	$ 49.6		$ 46.4
Earnings (loss) per share
Basic (in dollars per share)	$ (0.49)		$ 0.31	$ 0.36		$ 0.33
Diluted (in dollars per share)	$ (0.49)		$ 0.31	$ 0.36		$ 0.32
Adjustments | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ (9.7)			$ (8.4)
Cost of sales	(5.4)			(4.3)
Gross profit	(4.3)			(4.1)
Operating income (loss)	(4.3)			(4.1)
Income tax expense (benefit)	0.1			0.0
Net income (loss)	$ (4.4)			$ (4.1)
Earnings (loss) per share
Basic (in dollars per share)	$ (0.03)			$ (0.03)
Diluted (in dollars per share)	$ (0.03)			$ (0.03)
Balances without adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 1,123.4			$ 3,528.1
Cost of sales	702.9			2,143.7
Gross profit	420.5			1,384.4
Operating income (loss)	(126.3)			124.9
Income tax expense (benefit)	(11.4)			37.3
Net income (loss)	$ (71.9)			$ 45.5
Earnings (loss) per share
Basic (in dollars per share)	$ (0.52)			$ 0.33
Diluted (in dollars per share)	$ (0.52)			$ 0.33

[1] Derived from the location of the entity that sells to a third party.