Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Mar. 30, 2018	Dec. 29, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 1,707.9	$ 1,555.3
Intangible Assets, Accumulated Amortization	(1,241.7)	(1,190.5)
Total	466.2	364.8	[1]
Developed Product Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	1,006.7	915.3
Intangible Assets, Accumulated Amortization	(762.7)	(729.9)
Total	244.0	185.4
Trade Names And Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	64.8	58.7
Intangible Assets, Accumulated Amortization	(49.9)	(48.6)
Total	14.9	10.1
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	564.8	512.1
Intangible Assets, Accumulated Amortization	(367.5)	(351.3)
Total	197.3	160.8
Distribution Rights And Other Intellectual Properties [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	71.6	69.2
Intangible Assets, Accumulated Amortization	(61.6)	(60.7)
Total	$ 10.0	$ 8.5

[1] See Note 2 for a summary of adjustments