Income Taxes (Schedule Of Difference Between The Tax Provision At The Statutory Federal Income Tax Rate And The Tax Provision As A Percentage Of Income Before Taxes (Effective Tax Rate)) (Details)	12 Months Ended
Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
Foreign income taxed at different rates	1.70%	(7.30%)	(6.70%)
Change in valuation allowance	2.00%	0.00%	0.00%
U.S. State income taxes	0.50%	1.50%	1.00%
Stock-based compensation	1.50%	1.20%	1.10%
Excess tax benefit related to stock-based compensation	(1.50%)	(2.40%)	(3.20%)
Effect of U.S. tax law change	0.00%	0.00%	(7.60%)
Other U.S. taxes on foreign operations	(0.010)	0.013	0.016
U.S. Federal research and development credits	(2.30%)	(2.80%)	(3.70%)
Tax reserve releases	(4.80%)	(4.90%)	(8.70%)
Intellectual property restructuring and tax law changes	16.20%	59.80%	0.00%
Other	0.20%	3.00%	3.30%
Effective tax rate	1.10%	(49.20%)	(1.90%)

Effective Income Tax Rate Reconciliation, Restructuring And Tax Law Changes, Percent

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Effective Income Tax Rate Reconciliation, Tax Reserve Release, Percent

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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
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-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 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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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 nondeductible expense for share-based payment arrangement.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.

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