CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 29, 2021	Jan. 24, 2020	Jan. 29, 2021	Jan. 24, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 182	$ 277	$ 396	$ 623
Other comprehensive income (loss):
Foreign currency translation adjustments	1	0	10	(2)
Defined benefit obligations:
Reclassification adjustments related to defined benefit obligations	0	(1)	0	(2)
Income tax effect	0	0	0	1
Unrealized gains on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	(1)	0	0	22
Reclassification adjustments for gains included in net income	0	0	0	(14)
Unrealized losses on cash flow hedges:
Unrealized holding losses arising during the period	(5)	(2)	(13)	(1)
Reclassification adjustments for losses included in net income	3	0	11	0
Other comprehensive income (loss)	(2)	(3)	8	4
Comprehensive income	$ 180	$ 274	$ 404	$ 627