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Income Taxes - Summary of Differences Between U.S. Federal Statutory Tax Rate and Company's Consolidated Effective Tax Rate (Detail)	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	21.00%	21.00%	21.00%	21.00%
State income taxes (net of federal benefit)	0.80%	(0.60%)	1.90%	1.10%
Cessation of operations	0.00%	0.00%	(0.60%)	(0.90%)
Research and development credit	(1.20%)	(0.30%)	(1.10%)	(0.30%)
Tax windfall on share-based awards	(0.30%)	(3.00%)	(0.10%)	(12.40%)
Tax return adjustments related to the 2017 Tax Act	(1.70%)	(3.30%)	(0.90%)	(1.30%)
Reserve for uncertain tax positions	0.00%	(4.60%)	(1.20%)	(1.80%)
GILTI	2.00%	0.00%	2.60%	0.00%
FDII	(4.90%)	0.00%	(3.60%)	0.00%
Impact of foreign operations	3.70%	4.20%	2.80%	3.20%
Other	2.40%	1.60%	2.20%	1.20%
Total effective tax rate	21.80%	15.00%	23.00%	9.80%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to disposition of a business not qualifying as a discontinued operation.

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