Income Taxes (Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Federal income tax rate reconciliation
Statutory tax rate	21.00%	21.00%	35.00%
Tax effect of international operations	(1.00%)	0.00%	6.00%
State taxes, net of federal effect	1.00%	1.00%	1.00%
U.S. general business tax credits	(1.00%)	(1.00%)	(1.00%)
Domestic production deduction	0.00%	0.00%	(2.00%)
Stock compensation excess tax benefit	(3.00%)	(2.00%)	(10.00%)
Impact of 2017 Tax Cuts and Jobs Act	0.00%	0.00%	10.00%
Global Intangible Low-taxed Income	1.00%	1.00%	0.00%
Foreign Derived Intangible Income	(3.00%)	(2.00%)	0.00%
Pension Contribution	0.00%	(1.00%)	0.00%
Effective tax rate	15.00%	17.00%	27.00%

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 deductions. Including, but not limited to, extraterritorial income exclusion deduction, qualified production activity deduction, dividend deduction, deduction for dividend paid to employee stock ownership plan, Medicare prescription drug benefit subsidy deduction, and other deductions.

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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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