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Income Taxes (Reconciliation Of Income Tax Provision) (Details)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Taxes [Abstract]
Statutory U.S. federal income tax rate	21.00%	21.00%	35.00%
State income taxes, net of federal tax benefit	0.30%	0.30%	(0.20%)
Excess tax benefits on equity awards			(3.40%)
Permanent tax differences		0.40%	0.30%
Excess foreign tax credits	(13.00%)	(14.70%)
Net increase in valuation allowance	11.70%	15.80%
Foreign income tax rate differences	4.30%	4.20%	(0.20%)
Foreign withholding taxes	8.60%	8.10%	9.30%
U.S. tax reform			13.10%
All other, net	0.30%	(1.00%)	(0.30%)
Total	33.20%	34.10%	53.60%

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- Definition

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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