Deferred Tax Asset, Tax Basis In Intellectual Property

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Deferred Tax Liability, Reversal Of Intangible Assets

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Effective Income Tax Rate Reconciliation, Intellectual Property Transfer

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Duration of Tax Holiday (in years).

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Income Taxes [Line Items]

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Statutory Income Tax Rate

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Unrecognized Tax Benefits, Increase Due To Reclassification From Deferred Tax Assets

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Unrecognized Tax Benefits, Offset by Deferred Tax Assets

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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No definition available.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible 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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Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.

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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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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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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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Amount of expense 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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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2014	Jul. 31, 1999	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Income Taxes [Line Items]
Federal statutory tax rate			21.00%
Tax benefit for intellectual property transfer				$ 763,000
Deferred tax asset related to tax basis in intellectual property				659,000
Reversal of intangible assets, deferred tax liability				104,000
Valuation allowance			$ 749,468	676,780
Decrease in valuation allowance			72,700
Unrecognized tax benefit that would affect the effective income tax rate if recognized			171,500
Increases related to prior year tax positions			77,878	1,789	$ 1,836
Reductions to deferred tax assets			75,100
Unrecognized tax benefits offset by deferred tax assets			221,700	146,600	135,600
Unrecognized tax benefit, interest and penalties accrued			4,000	12,400	15,100
Interest and penalties related to unrecognized tax benefits included in consolidated statements of operation			1,000	1,400	2,700
Uncertain tax positions decrease from the lapse of the statutes of limitation in various jurisdictions during the next 12 months			5,400
Cash, cash equivalents and short-term investments			748,500
Unrecognized deferred tax liability on undistributed earnings of foreign subsidiaries			264,200
Marvell Israel
Income Taxes [Line Items]
Tax holidays, tax savings amount			$ 2,100	$ 0	$ 0
Tax holidays, per share effect on earnings (less than) (in dollars per share)			$ 0.01
Foreign Subsidiaries
Income Taxes [Line Items]
Cash, cash equivalents and short-term investments			$ 618,100
Office of the Tax Commissioner, Bermuda
Income Taxes [Line Items]
Applicable statutory rate			0.00%	0.00%	0.00%
Economic Development Board of Singapore Pioneer Status
Income Taxes [Line Items]
Expiration of tax exemption, period	15 years	10 years
Federal
Income Taxes [Line Items]
Net operating loss carryforwards			$ 832,600
Operating loss carryforwards subject to annual limitation			801,100
Tax credit carryforwards subject to annual limitation			120,400
Federal \| Research Tax Credit
Income Taxes [Line Items]
Tax credit carryforwards			360,300
State \| California
Income Taxes [Line Items]
Net operating loss carryforwards			517,300
State \| California \| Research Tax Credit
Income Taxes [Line Items]
Tax credit carryforwards			478,600
State \| Other State \| Research and Investment Tax Credit
Income Taxes [Line Items]
Tax credit carryforwards			28,800
Foreign
Income Taxes [Line Items]
Net operating loss carryforwards			$ 815,100