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Deferred Income Tax Liabilities, Intangibles And Undistributed Earnings From Foreign Subsidiaries

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Reduction of deferred tax asset included in unrecognized tax benefit

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Unrecognized tax benefits related to state income tax positions

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Aug. 01, 2021	Jan. 30, 2022	Jan. 31, 2021	Jan. 26, 2020	Jul. 26, 2020	Jan. 27, 2019
Income Tax Contingency [Line Items]
Income tax expense		$ 189	$ 77	$ 174
Effective tax rate (as percent)		1.90%	1.70%	5.90%
Discrete income tax benefit, domestication	$ 244
Deferred tax assets, valuation allowance		$ 907	$ 728
Gross unrecognized tax benefits		1,013	776	$ 583		$ 477
Unrecognized tax benefits that would affect effective tax rate		808
Unrecognized tax benefit related to state tax positions		181
Reduction of deferred tax asset included in unrecognized tax benefit		138
Interest and penalties		59	$ 44	$ 31
Other long-term liabilities
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would affect effective tax rate		670
Interest and penalties		59
Mellanox Technologies, Ltd
Income Tax Contingency [Line Items]
Deferred tax liabilities, intangibles and undistributed earnings from foreign subsidiaries					$ 256
Deferred liabilities, inside basis difference in acquired business					$ 153
Mellanox Technologies, Ltd \| Israel
Income Tax Contingency [Line Items]
Undistributed earnings of foreign subsidiaries		1,050
Mellanox Technologies, Ltd \| United Kingdom
Income Tax Contingency [Line Items]
Undistributed earnings of foreign subsidiaries		232
Federal
Income Tax Contingency [Line Items]
Net operating loss carryforwards		397
Research tax credit carryforwards		102
Foreign Country
Income Tax Contingency [Line Items]
Net operating loss carryforwards		341
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Net operating loss carryforwards		345
Research tax credit carryforwards		1,240
California
Income Tax Contingency [Line Items]
Research tax credit carryforwards		1,180
Other states
Income Tax Contingency [Line Items]
Research tax credit carryforwards		$ 55