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Stockholders' Equity - Schedule of Employee Stock Purchase Plan (ESPP) (Detail) - USD ($) shares in Millions, $ in Millions	6 Months Ended
	Oct. 25, 2019	Oct. 26, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under the ESPP	1	2
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from issuance of shares	$ 54	$ 49

X

- Definition

Amount of cash inflow from issuance of shares under share-based payment arrangement. Excludes option exercised.

+ References

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-Publisher FASB
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-Topic 230
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-Topic 718
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901

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Number of shares issued during the period as a result of an employee stock purchase plan.

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-Name Accounting Standards Codification
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