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Supplemental Financial Information - Inventories (Detail) - USD ($) $ in Millions	Jul. 31, 2020	Apr. 24, 2020
Inventory Disclosure [Abstract]
Purchased components	$ 25	$ 28
Finished goods	111	117
Inventories	$ 136	$ 145

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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