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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 30, 2018 | Dec. 31, 2017 | Dec. 25, 2016
Operating Loss Carryforwards [Line Items] |  |  |
Reduction to deferred tax asset |  | $ 40.0 |
Transition tax | $ 2.2 | 6.2 |
Increase in valuation allowance | 4.7 |  |
Federal annual utilization of NOL carryforwards limit, next five years | $ 27.0 |  |
Threshold period for change in allowed annual amount of NOL to be recognized | 5 years |  |
Federal annual utilization of NOL carryforwards limit, after year five | $ 11.6 |  |
Unrecognized deferred income taxes or foreign withholding taxes | 8.4 |  |
Unrecognized deferred income taxes or foreign withholding taxes, cash and cash equivalents available for distribution | 12.0 |  |
Unrecognized tax benefits that if recognized would affect effective tax rate | 17.7 |  |
Amount that would become a deferred tax asset included in unrecognized tax benefits that would impact the effective tax rate | 11.2 |  |
Income tax penalties and interest expense | 0.6 | 0.5 | $ 0.9
Benefit for income tax penalties and interest related to reversal of prior positions | 1.1 | 0.2 | 0.0
Total interest and penalties accrued | 1.6 | $ 2.2 | $ 1.9
Unrecognized tax benefits that will expire within the next 12 months | 0.1 |  |
Federal |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carryforwards | 346.9 |  |
State |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carryforwards | $ 263.1 |  |

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