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Schedule of Reconciliation of Effective Tax Rate (Detail)	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Income Tax Disclosure [Line Items]
US statutory federal tax rate	21.00%	21.00%	21.00%	21.00%
Foreign taxes	(6.90%)	(5.10%)	(5.80%)	(4.90%)
International provisions of the U.S. Tax Cuts and Jobs Act of 2017	3.60%	1.20%	0.70%	1.00%
Tax credits	(1.10%)	(1.80%)	(1.40%)	(2.20%)
Discrete (benefit) expense related to the international provisions of the U.S. Tax Cuts and Jobs Act of 2017	(0.60%)	(4.00%)	(0.20%)	2.30%
Discrete (benefit) expense related to release of reserves for uncertain tax positions	(0.50%)	0.10%	(0.20%)	(6.90%)
Discrete benefit related to equity compensation	(0.40%)	(0.70%)	(1.40%)	(1.50%)
Other, net	0.50%	(0.20%)	0.60%	0.40%
Effective tax rate	15.60%	10.50%	13.30%	9.20%

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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Income Tax Disclosure [Line Items]

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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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 other adjustments.

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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 expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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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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