Income Taxes (Statutory Tax Rate and Effective Tax Rate) (Details)	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Federal Statutory Rate	21.00%	35.00%	35.00%
State Income Taxes, Net of Federal Benefit	1.10%	0.30%	1.50%
Domestic Production Activities Deduction	(0.00%)	(1.00%)	(1.10%)
Research and Development Credit	(2.50%)	(3.00%)	(2.30%)
Valuation Allowance	(0.30%)	(0.60%)	0.00%
Tax Cuts and Jobs Act of 2017	(0.013)	(0.004)	0.000
Tax on Repatriation	1.30%	0.00%	0.00%
Adjustments to Tax Accruals and Reserves	0.00%	(1.90%)	0.70%
Other	0.50%	(0.70%)	(4.40%)
Effective Tax Rate	19.30%	21.30%	21.40%
China
Income Taxes [Line Items]
Foreign Rate Differential	0.90%	(2.10%)	(2.00%)
All Other Tax Authorities
Income Taxes [Line Items]
Foreign Rate Differential	(1.40%)	(4.30%)	(6.00%)

Effective Income Tax Rate Reconciliation, Adjustments To Tax Accruals And Reserves, Percent

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Effective Income Tax Rate Reconciliation,Tax Cuts And Jobs Act Of 2017, Percent

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[Line Items] for Income Taxes [Table]

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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 changes in the valuation allowance for deferred tax assets.

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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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