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Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Apr. 28, 2019
Apr. 29, 2018
Numerator:    
Net income $ 394 $ 1,244
Denominator:    
Basic weighted average shares (in shares) 607 606
Dilutive impact of outstanding securities:    
Equity awards (in shares) 9 20
1.00% Convertible Senior Notes (in shares) 0 1
Diluted weighted average shares (in shares) 616 627
Net income per share:    
Basic (in dollars per share) $ 0.65 $ 2.05
Diluted (in dollars per share) $ 0.64 $ 1.98
Equity awards excluded from diluted net income per share because their effect would have been anti-dilutive (in shares) 11 1
Convertible Debt    
Debt Instrument [Line Items]    
Debt interest rate 1.00%