v3.5.0.2
Document and Entity Information - shares
shares in Millions
6 Months Ended
Jul. 30, 2016
Aug. 26, 2016
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 30, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
Trading Symbol MRVL  
Entity Registrant Name MARVELL TECHNOLOGY GROUP LTD  
Entity Central Index Key 0001058057  
Current Fiscal Year End Date --01-28  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   511.7