CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Apr. 29, 2016	Apr. 24, 2015	Apr. 25, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 229	$ 560	$ 638
Other comprehensive income (loss):
Foreign currency translation adjustments	4	(28)	3
Defined benefit obligations:
Defined benefit obligation adjustments	(7)	(12)	1
Reclassification adjustments related to defined benefit obligations	2	0	0
Income tax effect	2	4	0
Unrealized gains (losses) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period	(4)	2	(2)
Reclassification adjustments for gains included in net income	(1)	0	(1)
Income tax effect	0	0	1
Unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) arising during the period	(4)	15	(4)
Reclassification adjustments for (gains) losses included in net income	1	(14)	2
Other comprehensive loss	(7)	(33)	0
Comprehensive income	$ 222	$ 527	$ 638