Business Combinations (Schedule Of Total Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Finite-Lived Intangible Assets [Line Items]
Write off of assets	$ 338.3
Gross Carrying Amount	1,903.4	$ 2,084.5
Accumulated Amortization	(1,323.3)	(1,405.8)
Total	$ 580.1	678.7
Developed product technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	6 years
Gross Carrying Amount	$ 1,118.2	1,191.9
Accumulated Amortization	(811.1)	(848.6)
Total	$ 307.1	343.3
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	5 years
Gross Carrying Amount	$ 58.3	73.1
Accumulated Amortization	(51.9)	(58.1)
Total	$ 6.4	15.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	8 years
Gross Carrying Amount	$ 681.1	750.8
Accumulated Amortization	(419.3)	(446.6)
Total	$ 261.8	304.2
Distribution rights and other intellectual properties
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Lives (in years)	7 years
Gross Carrying Amount	$ 45.8	68.7
Accumulated Amortization	(41.0)	(52.5)
Total	$ 4.8	$ 16.2