v3.20.2
Document and Entity Information
Dec. 07, 2020
Cover [Abstract]  
Entity Registrant Name MARVELL TECHNOLOGY GROUP LTD
Amendment Flag false
Entity Central Index Key 0001058057
Document Type 8-K
Document Period End Date Dec. 07, 2020
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
Entity Address, Country BM
City Area Code (441)
Local Phone Number 296-6395
Written Communications true
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