Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Jun. 28, 2019	Dec. 28, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 2,090.5	$ 2,092.7
Intangible Assets, Accumulated Amortization	(1,436.0)	(1,348.4)
Total	654.5	744.3
Developed Product Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	1,236.7	1,220.3
Intangible Assets, Accumulated Amortization	(889.6)	(825.3)
Total	347.1	395.0
Trade Names And Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	72.9	72.9
Intangible Assets, Accumulated Amortization	(56.5)	(53.3)
Total	16.4	19.6
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	716.3	715.1
Intangible Assets, Accumulated Amortization	(437.2)	(406.5)
Total	279.1	308.6
Distribution Rights And Other Intellectual Property [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	64.6	84.4
Intangible Assets, Accumulated Amortization	(52.7)	(63.3)
Total	$ 11.9	$ 21.1