v3.20.4
Goodwill (Details) - USD ($)
12 Months Ended
Jan. 31, 2021
Jan. 26, 2020
Jan. 27, 2019
Apr. 27, 2020
Goodwill [Line Items]        
Goodwill impairment loss $ 0 $ 0 $ 0  
Goodwill 4,193,000,000 618,000,000    
Goodwill acquired during period 3,570,000,000      
Mellanox Technologies, Ltd        
Goodwill [Line Items]        
Goodwill       $ 3,431,000,000
Goodwill acquired during period 3,430,000,000      
Individually Immaterial Acquisitions        
Goodwill [Line Items]        
Goodwill acquired during period 143,000,000      
Graphics        
Goodwill [Line Items]        
Goodwill 347,000,000 347,000,000    
Compute & Networking        
Goodwill [Line Items]        
Goodwill $ 3,850,000,000 $ 271,000,000