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Income Taxes (Narratives) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |
Tax benefit from revaluation of net deferred tax liabilities | $ 56.5 |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Undistributed Accumulated Earnings Of Foreign Subsidiary |  | $ 147.5
Provisional income tax expense | 14.7 | $ 14.7
Reasonably possible reduction within next 12 months | 0.9 |
Unrecognized tax benefit | $ 5.3 |

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- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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