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Supplemental Financial Information - Other Non-Current Assets (Detail) - USD ($) $ in Millions	Oct. 26, 2018	Apr. 27, 2018
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Deferred tax assets	$ 223	$ 229
Other assets	276	221
Other non-current assets	$ 499	$ 450

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

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Amount of noncurrent assets classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed after one year or the normal operating cycle, if longer.

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