Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 1,462.8	$ 1,348.7
Intangible Assets, Accumulated Amortization	(1,099.3)	(1,015.4)
Total	363.5	333.3
Developed Product Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	853.5	794.8
Intangible Assets, Accumulated Amortization	(672.9)	(620.6)
Total	180.6	174.2
Trade Names And Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	54.7	50.9
Intangible Assets, Accumulated Amortization	(45.7)	(42.9)
Total	9.0	8.0
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	487.4	438.7
Intangible Assets, Accumulated Amortization	(321.9)	(294.1)
Total	165.5	144.6
Distribution Rights And Other Intellectual Properties [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	67.2	64.3
Intangible Assets, Accumulated Amortization	(58.8)	(57.8)
Total	$ 8.4	$ 6.5