CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018
Income Statement [Abstract]
Revenue	$ 2,579	$ 3,123	$ 4,799	$ 6,330
Cost of revenue	1,038	1,148	1,962	2,287
Gross profit	1,541	1,975	2,837	4,043
Operating expenses
Research and development	704	581	1,379	1,124
Sales, general and administrative	266	237	529	467
Total operating expenses	970	818	1,908	1,591
Income from operations	571	1,157	929	2,452
Interest income	47	32	92	57
Interest expense	(13)	(14)	(27)	(29)
Other, net	1	5	1	11
Total other income (expense)	35	23	66	39
Income before income tax	606	1,180	995	2,491
Income tax expense	54	79	48	146
Net income	$ 552	$ 1,101	$ 947	$ 2,345
Net income per share:
Basic (in dollars per share)	$ 0.91	$ 1.81	$ 1.56	$ 3.86
Diluted (in dollars per share)	$ 0.90	$ 1.76	$ 1.54	$ 3.74
Weighted average shares used in per share computation:
Basic (in shares)	609	607	608	607
Diluted (in shares)	616	626	616	627