v3.20.4
Segment Information - Revenue and Long-lived Assets by Region (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 31, 2021
Jan. 26, 2020
Jan. 27, 2019
Revenues and Long-Lived Assets      
Revenue $ 16,675 $ 10,918 $ 11,716
Long-lived assets 2,149 1,674  
Taiwan      
Revenues and Long-Lived Assets      
Revenue 4,531 3,025 3,360
Long-lived assets 183 114  
China (including Hong Kong)      
Revenues and Long-Lived Assets      
Revenue 3,886 2,731 2,801
Long-lived assets 71 28  
United States      
Revenues and Long-Lived Assets      
Revenue 3,214 886 1,506
Long-lived assets 1,643 1,451  
Other Asia Pacific      
Revenues and Long-Lived Assets      
Revenue 3,093 2,685 2,368
Europe      
Revenues and Long-Lived Assets      
Revenue 1,118 992 914
Long-lived assets 34 28  
Israel      
Revenues and Long-Lived Assets      
Long-lived assets 147 0  
India      
Revenues and Long-Lived Assets      
Long-lived assets 64 51  
Other countries      
Revenues and Long-Lived Assets      
Revenue 833 599 $ 767
Long-lived assets $ 7 $ 2