Supplemental Financial Information - Other Income (expense), Net (Detail) - USD ($) $ in Millions	3 Months Ended
Jul. 31, 2020	Jul. 26, 2019
Nonoperating Income Expense [Abstract]
Interest income	$ 3	$ 19
Interest expense	(18)	(15)
Other income (expense), net	(17)	11
Total other income (expense), net	$ (32)	$ 15

Amount of the cost of borrowed funds accounted for as interest expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
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Balance Type:	debit
Period Type:	duration

- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

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No definition available.

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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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