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Goodwill and Intangible Assets - Summary of Intangible Assets, Net (Details) - USD ($) $ in Millions	Sep. 28, 2018	Dec. 31, 2017
Intangible Assets, Net
Original Cost	$ 1,398.7	$ 1,347.8
Accumulated Amortization	(745.9)	(662.6)
Accumulated Impairment Losses	(56.9)	(56.9)
Carrying Value	595.9	628.3
Customer relationships
Intangible Assets, Net
Original Cost	556.7	555.9
Accumulated Amortization	(351.4)	(328.5)
Accumulated Impairment Losses	(20.1)	(20.1)
Carrying Value	185.2	207.3
Developed technology
Intangible Assets, Net
Original Cost	698.0	657.6
Accumulated Amortization	(336.4)	(278.2)
Accumulated Impairment Losses	(2.6)	(2.6)
Carrying Value	359.0	376.8
IPRD
Intangible Assets, Net
Original Cost	64.1	54.5
Accumulated Amortization	0.0	0.0
Accumulated Impairment Losses	(19.0)	(19.0)
Carrying Value	45.1	35.5
Other intangibles
Intangible Assets, Net
Original Cost	79.9	79.8
Accumulated Amortization	(58.1)	(55.9)
Accumulated Impairment Losses	(15.2)	(15.2)
Carrying Value	$ 6.6	$ 8.7

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