Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 30, 2022	Jan. 31, 2021	Jan. 26, 2020
Numerator:
Net income	$ 9,752	$ 4,332	$ 2,796
Denominator:
Basic weighted average shares (in shares)	2,496	2,467	2,439
Equity awards (in shares)	39	43	33
Diluted weighted average shares (in shares)	2,535	2,510	2,472
Net income per share:
Basic (in USD per share)	$ 3.91	$ 1.76	$ 1.15
Diluted (in USD per share)	$ 3.85	$ 1.73	$ 1.13
Equity awards excluded from diluted net income per share because their effect would have been anti-dilutive (in shares)	21	12	44