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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2022	Oct. 29, 2022	Jul. 30, 2022	Apr. 30, 2022
Long-term Purchase Commitment [Line Items]
Standard warranty period			1 year
Extended warranty period (more than)			1 year
Loss contingency, reserve					$ 15.0
Loss contingency accrual				$ 85.0
Litigation settlement, amount awarded to other party		$ 100.0
Wafers, Substrates, and Other Manufacturing Products
Long-term Purchase Commitment [Line Items]
Estimated commitment			$ 2,600.0
Fees payable		$ 134.6	$ 134.6
Wafers, Substrates, and Other Manufacturing Products | Minimum
Long-term Purchase Commitment [Line Items]
Purchase commitment period			4 years
Wafers, Substrates, and Other Manufacturing Products | Maximum
Long-term Purchase Commitment [Line Items]
Purchase commitment period			10 years
Technology License Fees
Long-term Purchase Commitment [Line Items]
Purchase commitment period	10 years
Fees payable	$ 354.0

X

- Definition

Extended Product Warranty Period

+ References

No definition available.

+ Details

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Namespace Prefix:	mrvl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Loss Contingency, Reserve

+ References

No definition available.

+ Details

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Namespace Prefix:	mrvl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Standard Product Warranty Time Period

+ References

No definition available.

+ Details

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Namespace Prefix:	mrvl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

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.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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X

- Definition

Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Namespace Prefix:
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Period Type:

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- Details

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- Details

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X

- Details

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