Business Combinations (Schedule Of Total Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,191.0	$ 2,092.7
Accumulated Amortization	(1,512.3)	(1,348.4)
Total	678.7	744.3
Developed Product Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,266.7	1,220.3
Accumulated Amortization	(923.4)	(825.3)
Total	$ 343.3	395.0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years
Trade Names And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 74.8	72.9
Accumulated Amortization	(59.8)	(53.3)
Total	$ 15.0	19.6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 769.8	715.1
Accumulated Amortization	(465.6)	(406.5)
Total	$ 304.2	308.6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years
Distribution Rights And Other Intellectual Properties [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 79.7	84.4
Accumulated Amortization	(63.5)	(63.3)
Total	$ 16.2	$ 21.1
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years