Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Jul. 02, 2021	Jan. 01, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,808.5	$ 1,903.4
Accumulated amortization	(1,300.2)	(1,323.3)
Total	508.3	580.1
Developed product technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,057.4	1,118.2
Accumulated amortization	(798.3)	(811.1)
Total	259.1	307.1
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	660.3	681.1
Accumulated amortization	(419.1)	(419.3)
Total	241.2	261.8
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	48.1	58.3
Accumulated amortization	(45.5)	(51.9)
Total	2.6	6.4
Distribution rights and other intellectual property
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	42.7	45.8
Accumulated amortization	(37.3)	(41.0)
Total	$ 5.4	$ 4.8