CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 26, 2020	Jul. 28, 2019	Jul. 26, 2020	Jul. 28, 2019
Income Statement [Abstract]
Revenue	$ 3,866	$ 2,579	$ 6,946	$ 4,799
Cost of revenue	1,591	1,038	2,667	1,962
Gross profit	2,275	1,541	4,279	2,837
Operating expenses
Research and development	997	704	1,732	1,379
Sales, general and administrative	627	266	920	529
Total operating expenses	1,624	970	2,652	1,908
Income from operations	651	571	1,627	929
Interest income	13	47	44	92
Interest expense	(54)	(13)	(78)	(27)
Other, net	(1)	1	(2)	1
Other income (expense), net	(42)	35	(36)	66
Income before income tax	609	606	1,591	995
Income tax expense (benefit)	(13)	54	52	48
Net income	$ 622	$ 552	$ 1,539	$ 947
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
Weighted average shares used in per share computation:
Basic (in shares)	616	609	615	608
Diluted (in shares)	626	616	624	616