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Derivatives and Hedging Activities - Schedule of Notional Value of Outstanding Foreign Currency Forward Contracts (Detail) - United States of America, Dollars - USD ($) $ in Millions	Jan. 29, 2016	Apr. 24, 2015
Cash Flow Hedging | Long
Derivative [Line Items]
Forward contracts, Notional Amount	$ 160	$ 94
Non Designated | Long
Derivative [Line Items]
Forward contracts, Notional Amount	339	231
Non Designated | Short
Derivative [Line Items]
Forward contracts, Notional Amount	$ 149	$ 160

X

- 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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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