Supplemental Financial Information - Property and Equipment Net (Detail) - USD ($) $ in Millions	Oct. 26, 2018	Apr. 27, 2018
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,052	$ 2,004
Accumulated depreciation and amortization	(1,282)	(1,248)
Property and equipment, net	770	756
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	106	106
Buildings and improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	604	594
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	87	88
Computer, production, engineering and other equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	786	733
Computer software
Property Plant And Equipment [Line Items]
Property and equipment, gross	357	357
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	104	99
Construction-in-progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 8	$ 27

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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