Net Income per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Oct. 30, 2020	Oct. 25, 2019	Oct. 30, 2020	Oct. 25, 2019
Net income per share:
Net income	$ 137	$ 243	$ 214	$ 346
Shares used in basic computation	222	235	222	237
Dilutive impact of employee equity award plans	2	1	1	3
Shares used in diluted computation	224	236	223	240
Basic	$ 0.62	$ 1.03	$ 0.96	$ 1.46
Diluted	$ 0.61	$ 1.03	$ 0.96	$ 1.44