Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Jul. 03, 2020	Jan. 03, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	$ 2,221.4	$ 2,191.0
Intangible Assets, Accumulated Amortization	(1,576.1)	(1,512.3)
Total	645.3	678.7
Developed product technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	1,302.5	1,266.7
Intangible Assets, Accumulated Amortization	(958.1)	(923.4)
Total	344.4	343.3
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	74.3	74.8
Intangible Assets, Accumulated Amortization	(65.1)	(59.8)
Total	9.2	15.0
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	773.2	769.8
Intangible Assets, Accumulated Amortization	(489.2)	(465.6)
Total	284.0	304.2
Distribution rights and other intellectual property
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Amount	71.4	79.7
Intangible Assets, Accumulated Amortization	(63.7)	(63.5)
Total	$ 7.7	$ 16.2