v3.25.4
Basis of Presentation (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - Marvell Technology's Automotive Ethernet Business - USD ($)
$ in Billions
12 Months Ended
Jan. 31, 2026
Aug. 14, 2025
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Consideration for disposal   $ 2.5
Pre-tax gain on sale $ 1.8  
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense)