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Schedule of Reconciliation of Effective Tax Rate (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Income Tax Disclosure [Line Items]
US statutory federal tax rate	21.00%	21.00%	21.00%	21.00%
Discrete expense related to U.S. transition tax	11.20%	0.00%	6.50%	0.00%
International provisions of the U.S. Tax Cuts and Jobs Act of 2017	0.80%	(1.40%)	0.80%	(1.40%)
Discrete benefit related to equity compensation	(0.50%)	(0.10%)	(2.00%)	(3.50%)
Foreign taxes	(4.90%)	(3.40%)	(4.90%)	(3.40%)
Tax credits	(2.50%)	(2.10%)	(2.50%)	(2.10%)
Discrete benefit related to release of reserves for uncertain tax positions	(0.10%)	0.00%	(12.90%)	0.00%
Other, net	0.80%	1.80%	2.30%	2.30%
Effective tax rate	25.80%	15.80%	8.30%	12.90%

X

- Definition

Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to effect of tax cuts and jobs act.

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Effective income tax rate reconciliation change in rate due to transition tax attributable to the Tax Cuts and Jobs Act of 2017.

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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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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