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Business Combinations (Schedule Of Intangible Assets) (Detail) - USD ($) $ in Millions | Jun. 29, 2018 | Dec. 29, 2017
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross Carrying Amount | $ 1,683.2 | $ 1,555.3 |
Intangible Assets, Accumulated Amortization | (1,261.0) | (1,190.5) |
Total | 422.2 | 364.8 | [1]
Developed Product Technology [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross Carrying Amount | 991.9 | 915.3 |
Intangible Assets, Accumulated Amortization | (773.7) | (729.9) |
Total | 218.2 | 185.4 |
Trade Names And Trademarks [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross Carrying Amount | 63.9 | 58.7 |
Intangible Assets, Accumulated Amortization | (50.5) | (48.6) |
Total | 13.4 | 10.1 |
Customer Relationships [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross Carrying Amount | 556.9 | 512.1 |
Intangible Assets, Accumulated Amortization | (374.4) | (351.3) |
Total | 182.5 | 160.8 |
Distribution Rights And Other Intellectual Property [Member] |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible Assets, Gross Carrying Amount | 70.5 | 69.2 |
Intangible Assets, Accumulated Amortization | (62.4) | (60.7) |
Total | $ 8.1 | $ 8.5 |
[1] | See Note 2 for a summary of adjustments

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