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Derivatives and Hedging Activities - Schedule of Notional Value of Outstanding Foreign Currency Forward Contracts (Detail) - Foreign Exchange Forward Contracts - USD ($) $ in Millions	Apr. 26, 2019	Apr. 27, 2018
Long | Cash Flow Hedges
Derivative [Line Items]
Forward contracts, Notional Amount	$ 103	$ 0
Non Designated | Long | Balance Sheet Contracts
Derivative [Line Items]
Forward contracts, Notional Amount	363	412
Non Designated | Short | Balance Sheet Contracts
Derivative [Line Items]
Forward contracts, Notional Amount	$ 121	$ 115

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

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+ References

No definition available.

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