Intangible Assets and Goodwill (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions	Oct. 01, 2021	Jan. 01, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 1,710.4	$ 1,903.4
Accumulated amortization	(1,236.9)	(1,323.3)
Total	473.5	580.1
Developed product technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	973.6	1,118.2
Accumulated amortization	(733.4)	(811.1)
Total	240.2	307.1
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	652.0	681.1
Accumulated amortization	(419.7)	(419.3)
Total	232.3	261.8
Trade names and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	46.6	58.3
Accumulated amortization	(46.6)	(51.9)
Total	0.0	6.4
Distribution rights and other intellectual property
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	38.2	45.8
Accumulated amortization	(37.2)	(41.0)
Total	$ 1.0	$ 4.8