CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 30, 2020	Oct. 25, 2019	Oct. 30, 2020	Oct. 25, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 137	$ 243	$ 214	$ 346
Other comprehensive income:
Foreign currency translation adjustments	0	(1)	9	(2)
Defined benefit obligations:
Reclassification adjustments related to defined benefit obligations	0	(1)	0	(1)
Income tax effect	0	1	0	1
Unrealized gains on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	(1)	2	1	22
Reclassification adjustments for gains included in net income	0	0	0	(14)
Unrealized losses on cash flow hedges:
Unrealized holding gains (losses) arising during the period	1	2	(8)	1
Reclassification adjustments for losses included in net income	7	0	8	0
Other comprehensive income	7	3	10	7
Comprehensive income	$ 144	$ 246	$ 224	$ 353