Supplemental Financial Information - Inventories (Detail) - USD ($) $ in Millions	Jan. 25, 2019	Apr. 27, 2018
Inventory Disclosure [Abstract]
Purchased components	$ 11	$ 12
Finished goods	89	110
Inventories	$ 100	$ 122

No definition available.

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- Definition

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.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

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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- Definition

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.

+ References

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-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
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