Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 1,667.5		$ 1,667.5		$ 1,401.1
Amortization of acquisition-related intangible assets	27.5	$ 27.9	53.2	$ 55.3
Intangible assets, net	778.0		778.0		566.4
IPRD
Finite-Lived Intangible Assets [Line Items]
Intangible impairment	0.4		1.6
Finite-Lived Intangible Assets, Gross	115.1		115.1		64.1
Intangible assets, net	$ 91.0		$ 91.0		$ 41.6