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Income Taxes (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Effective tax rate | 12.00% | 27.00% | 20.00% | 29.00% |
Adjustment to provisional tax calculation | $ (4.3) |  | $ (4.3) |  |
Adjustment to provisional tax calculation, effect on diluted earnings per share (in dollars per share) | $ 0.07 |  | $ 0.07 |  |
Provision for state income taxes, net of federal benefits | $ 0.7 |  | $ 3.3 | $ 1.7 |
Increase in valuation allowance | $ 1.5 |  | $ 1.5 |  |
Increase in valuation allowance, effect on diluted earnings per share (in dollars per share) | $ 0.03 |  | $ 0.03 |  |
Reduction for U.S. production activities |  | $ 0.6 |  | 2.4 |
Tax benefit of foreign adjustments |  | 1.6 | $ 0.8 | 4.6 |
Impact of investments in unconsolidated affiliates | $ 0.7 |  | 4.4 | 0.9 |
Global intangible low-taxed income expense |  |  | $ 0.8 |  |
Tax benefit of equity compensation deductions |  | $ 0.5 |  | $ 2.2 |
One-time transition tax liability | 8.6 |  |  |  | $ 12.9
Provisional tax benefit | $ 12.1 |  |  |  | $ 12.1

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