v3.25.4
Goodwill and Acquired Intangible Assets, Net - Narrative (Details)
3 Months Ended 12 Months Ended
Jan. 31, 2026
USD ($)
segment
reporting_unit
Jan. 31, 2026
USD ($)
reporting_unit
segment
Feb. 01, 2025
USD ($)
Feb. 03, 2024
USD ($)
Finite-Lived Intangible Assets [Line Items]        
Goodwill $ 11,062,200,000 $ 11,062,200,000 $ 11,586,900,000  
Number of operating segments | segment 1 1    
Number of reportable segments | reporting_unit 1 1    
Goodwill impairment $ 0      
Impairment Of Intangible Asset Finite Lived Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag     acquired developed technologies intangible assets  
Weighted average remaining amortization period (years)   2 years 9 months 18 days 3 years 3 months 18 days  
Amortization of acquired intangible assets   $ 942,000,000.0 $ 1,052,600,000 $ 1,097,900,000
Developed technologies        
Finite-Lived Intangible Assets [Line Items]        
Impairment of intangible assets, finite-lived     $ 240,100,000  
Weighted average remaining amortization period (years)   3 years 3 months 18 days 3 years 7 months 6 days  
In-process research and development        
Finite-Lived Intangible Assets [Line Items]        
Weighted average remaining amortization period (years)   9 years    
Disposal Group, Held-for-Sale, Not Discontinued Operations | Marvell Technology's Automotive Ethernet Business        
Finite-Lived Intangible Assets [Line Items]        
Goodwill, asset held for sale $ 524,700,000 $ 524,700,000