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Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended
	Jul. 29, 2016	Jul. 31, 2015	Apr. 29, 2016
Commitments and Contingencies Disclosure [Line Items]
Future annual minimum lease payments	$ 258,000,000
Accrued purchase commitments with contract manufacturers	5,000,000		$ 7,000,000
Sale of finance receivables	76,000,000	$ 42,000,000
Legal proceedings and claims	$ 0
Maximum
Commitments and Contingencies Disclosure [Line Items]
Terms of recourse leases	3 years
Inventory
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	$ 249,000,000
Construction Related
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	41,000,000
Other
Commitments and Contingencies Disclosure [Line Items]
Purchase orders and other commitments	$ 246,000,000

X

- Definition

Accrued liability for quantities in excess of future demand forecasts with contract manufacturers.

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Commitments and contingencies disclosure.

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- Definition

The approximate maximum term of recourse financing arrangements.

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
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The cash inflow associated with the sale or collection of receivables arising from the financing of goods and services.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
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Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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