Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Apr. 29, 2016	Apr. 24, 2015	Apr. 25, 2014
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current, Federal	$ 180	$ 104	$ 124
Current, State	14	12	14
Current, Foreign	35	40	41
Total current	229	156	179
Deferred, Federal	(91)	8	(65)
Deferred, State	(17)	(3)	(6)
Deferred, Foreign	(5)	(8)	(5)
Total deferred	(113)	(3)	(76)
Provision for income taxes	$ 116	$ 153	$ 103