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Supplemental Financial Information - Property and Equipment Net (Detail) - USD ($) $ in Millions	Jan. 24, 2020	Apr. 26, 2019
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,137	$ 2,086
Accumulated depreciation and amortization	(1,397)	(1,327)
Property and equipment, net	740	759
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	104	106
Buildings and improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	610	605
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	87	86
Computer, production, engineering and other equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	844	817
Computer software
Property Plant And Equipment [Line Items]
Property and equipment, gross	359	357
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	107	105
Construction-in-progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 26	$ 10

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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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