v3.19.3.a.u2
Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 26, 2020
Jan. 27, 2019
Jan. 28, 2018
Equity [Abstract]      
Dividends paid $ 390 $ 371 $ 341
Aggregate number of shares repurchased under stock repurchase program (in shares) 260,000,000    
Aggregated cost of shares repurchased $ 7,080    
Remaining authorized shares repurchase amount $ 7,240    
Preferred stock outstanding (in shares) 0 0  
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000  
Common stock, par value (in USD per share) $ 0.001 $ 0.001