| Document and Entity Information | Apr. 30, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001835632 |
| Document Type | 8-K |
| Document Period End Date | Apr. 30, 2021 |
| Entity Registrant Name | MARVELL TECHNOLOGY, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40357 |
| Entity Tax Identification Number | 85-3971597 |
| Entity Address, Address Line One | 1000 N. West Street |
| Entity Address, Address Line Two | Suite 1200 |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19801 |
| City Area Code | (302) |
| Local Phone Number | 295-4840 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Shares |
| Trading Symbol | MRVL |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
