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Balance Sheet Details - Property and Equipment Net (Detail) - USD ($) $ in Millions	Jan. 29, 2016	Apr. 24, 2015
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 2,075	$ 2,223
Accumulated depreciation and amortization	(1,202)	(1,193)
Property and equipment, net	873	1,030
Land
Property Plant And Equipment [Line Items]
Property and equipment, gross	181	265
Buildings and improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	543	607
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	103	107
Computer, production, engineering and other equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	751	754
Computer software
Property Plant And Equipment [Line Items]
Property and equipment, gross	351	372
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	83	85
Construction-in-progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 63	$ 33

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

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-Name Regulation S-X (SX)
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