Income Taxes - Narrative (Detail) - USD ($) $ in Millions	6 Months Ended
	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