CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock and Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balances at Apr. 25, 2014	$ 3,787	$ 3,777	$ 1	$ 9
Balances (in shares) at Apr. 25, 2014		325
Net income	560		560
Other comprehensive income (loss)	(33)			(33)
Issuance of common stock under employee stock award plans, net of taxes	157	$ 157
Issuance of common stock under employee stock award plans, net of taxes (in shares)		11
Repurchase of common stock	$ (1,165)	$ (813)	(352)
Repurchase of common stock, shares	(30)	(30)
Stock-based compensation	$ 259	$ 259
Income tax benefit from employee stock transactions	57	57
Cash dividends declared ($0.66, $0.72 and $0.76 per common share)	(208)	(52)	(156)
Balances at Apr. 24, 2015	3,414	$ 3,385	53	(24)
Balances (in shares) at Apr. 24, 2015		306
Net income	229		229
Other comprehensive income (loss)	(7)			(7)
Issuance of common stock under employee stock award plans, net of taxes	70	$ 70
Issuance of common stock under employee stock award plans, net of taxes (in shares)		8
Repurchase of common stock	$ (960)	$ (763)	(197)
Repurchase of common stock, shares	(33)	(33)
Stock-based compensation	$ 260	$ 260
Income tax benefit from employee stock transactions	59	59
Income tax adjustments on other equity transactions	26	26
Cash dividends declared ($0.66, $0.72 and $0.76 per common share)	(210)	(125)	(85)
Balances at Apr. 29, 2016	$ 2,881	$ 2,912		(31)
Balances (in shares) at Apr. 29, 2016	281	281
Net income	$ 509		509
Other comprehensive income (loss)	2			2
Issuance of common stock under employee stock award plans, net of taxes	92	$ 92
Issuance of common stock under employee stock award plans, net of taxes (in shares)		10
Repurchase of common stock	$ (705)	$ (335)	(370)
Repurchase of common stock, shares	(22)	(22)
Stock-based compensation	$ 195	$ 195
Cash dividends declared ($0.66, $0.72 and $0.76 per common share)	(208)	(88)	(120)
Balances at Apr. 28, 2017	$ 2,780	$ 2,769	40	$ (29)
Balances (in shares) at Apr. 28, 2017	269	269
Cumulative-effect of new accounting principle	$ 14	$ (7)	$ 21