v3.21.1
Document and Entity Information
Apr. 20, 2021
Cover [Abstract]  
Entity Registrant Name MARVELL TECHNOLOGY GROUP LTD
Entity Address, Country BM
Amendment Flag false
Entity Central Index Key 0001058057
Current Fiscal Year End Date --01-30
Document Type 8-K
Document Period End Date Apr. 20, 2021
Entity Incorporation State Country Code D0
Entity File Number 0-30877
Entity Tax Identification Number 77-0481679
Entity Address, Address Line One Victoria Place
Entity Address, Address Line Two 5th Floor
Entity Address, Address Line Three 31 Victoria Street
Entity Address, City or Town Hamilton
Entity Address, Postal Zip Code HM 10
City Area Code (441)
Local Phone Number 294-8000
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