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Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions | Mar. 29, 2019 | Dec. 28, 2018
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Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | $ 2,088.9 | $ 2,092.7
Intangible Assets, Accumulated Amortization | (1,391.4) | (1,348.4)
Total | 697.5 | 744.3
Developed Product Technology [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 1,222.0 | 1,220.3
Intangible Assets, Accumulated Amortization | (850.7) | (825.3)
Total | 371.3 | 395.0
Trade Names And Trademarks [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 72.9 | 72.9
Intangible Assets, Accumulated Amortization | (54.7) | (53.3)
Total | 18.2 | 19.6
Customer Relationships [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 715.6 | 715.1
Intangible Assets, Accumulated Amortization | (422.7) | (406.5)
Total | 292.9 | 308.6
Distribution Rights And Other Intellectual Property [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Amount | 78.4 | 84.4
Intangible Assets, Accumulated Amortization | (63.3) | (63.3)
Total | $ 15.1 | $ 21.1

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