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Income Taxes - Narrative (Detail) - USD ($) $ in Millions | 6 Months Ended
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Jun. 29, 2019 | Jun. 30, 2018
Income Tax [Line Items] |  |
Effective income tax rate | 23.90% | 25.00%
Tax Cuts And Jobs Act Of 2017, incomplete accounting, increase (decrease) in provisional income tax expense |  | $ 2.1
Tax Cuts And Jobs Act Of 2017, incomplete accounting, increase in provisional income tax rate, basis points |  | 0.50%
Minimum |  |
Income Tax [Line Items] |  |
Decrease in unrecognized tax benefits | $ 0.0 |
Increase in unrecognized tax benefits | 0.0 |
Maximum |  |
Income Tax [Line Items] |  |
Decrease in unrecognized tax benefits | 2.5 |
Increase in unrecognized tax benefits | $ 1.0 |

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