Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 26, 2020	Jul. 28, 2019	Jul. 26, 2020	Jul. 28, 2019
Numerator:
Net income	$ 622	$ 552	$ 1,539	$ 947
Denominator:
Basic weighted average shares (in shares)	616	609	615	608
Dilutive impact of outstanding equity awards (in shares)	10	7	9	8
Diluted weighted average shares (in shares)	626	616	624	616
Net income per share:
Basic (in dollars per share)	$ 1.01	$ 0.91	$ 2.50	$ 1.56
Diluted (in dollars per share)	$ 0.99	$ 0.90	$ 2.47	$ 1.54
Equity awards excluded from diluted net income per share because their effect would have been anti-dilutive (in shares)	0	11	6	12