v3.25.4
Cover - USD ($)
shares in Millions
 12 Months Ended
Jan. 31, 2026
Mar. 04, 2026
Aug. 01, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --01-31    
Document Period End Date Jan. 31, 2026    
Document Transition Report false    
Entity File Number 001-40357    
Entity Registrant Name MARVELL TECHNOLOGY, INC    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 85-3971597    
Entity Address, Address Line One 1000 N. West Street, 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    
Title of 12(b) Security Common stock, $0.002 par value per share    
Trading Symbol MRVL    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 64,119,895,583
Entity Common Stock, Shares Outstanding   874.3  
Documents Incorporated by Reference
Portions of Part III of this Form 10-K are incorporated by reference from the registrant’s definitive proxy statement for its 2026 annual meeting of stockholders, which will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year covered by this Form 10-K. Except with respect to information specifically incorporated by reference in this Form 10-K, the proxy statement is not deemed to be filed as part of this Form 10-K.
    
Entity Central Index Key 0001835632    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Amendment Flag false