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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 28, 2018 | Dec. 29, 2017
--- | --- | ---
Income Tax Disclosure [Abstract] |  |  |
Purchased intangibles | $ 166.0 | $ 69.8 |
Depreciation and amortization | 5.2 | 13.1 |
Deferred revenue |  | 1.3 |
Other | 9.5 | 8.4 |
Total deferred tax liabilities | 180.7 | 92.6 |
Expenses not currently deductible | 33.4 | 24.7 |
U.S. tax credit carryforwards | 30.3 | 21.9 |
U.S. net operating loss carryforwards | 20.8 | 6.4 |
Foreign net operating loss carryforwards | 16.9 | 20.2 |
Stock-based compensation | 20.3 | 21.4 |
Global Intangible Low-Taxed Income | 13.4 |  |
Deferred revenue | 3.6 |  |
Other | 8.2 | (4.4) |
Total deferred tax assets | 146.9 | 90.2 |
Valuation allowance | (27.8) | (25.2) |
Total deferred tax assets | 119.1 | 65.0 |
Total net deferred tax liabilities | (61.6) | (27.6) |
Non-current deferred income tax assets | 12.2 | 20.2 |
Non-current deferred income tax liabilities | $ (73.8) | $ (47.8) | [1]
[1] | See Note 2 for a summary of adjustments

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