CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Income Statement [Abstract]
Revenue		$ 11,716	$ 9,714	$ 6,910
Cost of revenue		4,545	3,892	2,847
Gross profit		7,171	5,822	4,063
Operating expenses
Research and development		2,376	1,797	1,463
Sales, general and administrative		991	815	663
Restructuring and other charges		0	0	3
Total operating expenses		3,367	2,612	2,129
Income from operations		3,804	3,210	1,934
Interest income		136	69	54
Interest expense		(58)	(61)	(58)
Other, net		14	(22)	(25)
Total other income (expense)		92	(14)	(29)
Income before income tax		3,896	3,196	1,905
Income tax expense (benefit)		(245)	149	239
Net income		$ 4,141	$ 3,047	$ 1,666
Net income per share:
Basic (in USD per share)	[1]	$ 6.81	$ 5.09	$ 3.08
Diluted (in USD per share)	[2]	$ 6.63	$ 4.82	$ 2.57
Weighted average shares used in per share computation:
Basic (in shares)		608	599	541
Diluted (in shares)		625	632	649
Cash dividends declared and paid per common share		$ 0.610	$ 0.570	$ 0.485

[1] Calculated as net income divided by basic weighted average shares.

[2] Calculated as net income divided by diluted weighted average shares.