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Income Taxes - Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Apr. 28, 2017	Apr. 29, 2016	Apr. 24, 2015
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax computed at federal statutory rate	$ 233	$ 121	$ 250
State income taxes, net of federal benefit	14	(3)	5
Foreign earnings in lower tax jurisdictions	(100)	(81)	(141)
Stock-based compensation	16	13	6
Research and development credits	(8)	(14)	(14)
Resolution of income tax examinations	0	20	46
Domestic production activities deduction	(4)	(10)	(5)
Other	5	6	6
Provision for income taxes	156	116	153
SolidFire
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax charge from integration of intellectual properties from the SolidFire acquisition	$ 0	$ 64	$ 0

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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