Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Oct. 02, 2020	Jan. 03, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 2,243.6	$ 2,191.0
Accumulated amortization	(1,633.5)	(1,512.3)
Total	610.1	678.7
Developed product technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,318.7	1,266.7
Accumulated amortization	(993.4)	(923.4)
Total	325.3	343.3
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	76.4	74.8
Accumulated amortization	(68.4)	(59.8)
Total	8.0	15.0
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	779.8	769.8
Accumulated amortization	(507.7)	(465.6)
Total	272.1	304.2
Distribution rights and other intellectual property
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	68.7	79.7
Accumulated amortization	(64.0)	(63.5)
Total	$ 4.7	$ 16.2