Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 1,412.8	$ 1,348.7
Intangible Assets, Accumulated Amortization	(1,051.2)	(1,015.4)
Total	361.6	333.3
Developed Product Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	833.7	794.8
Intangible Assets, Accumulated Amortization	(642.7)	(620.6)
Total	191.0	174.2
Trade Names And Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	52.8	50.9
Intangible Assets, Accumulated Amortization	(44.1)	(42.9)
Total	8.7	8.0
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	461.8	438.7
Intangible Assets, Accumulated Amortization	(306.3)	(294.1)
Total	155.5	144.6
Distribution Rights And Other Intellectual Properties [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	64.5	64.3
Intangible Assets, Accumulated Amortization	(58.1)	(57.8)
Total	$ 6.4	$ 6.5