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Goodwill and Purchased Intangible Assets, Net - Purchased Intangible Assets, Net (Detail) - USD ($) $ in Millions | Apr. 28, 2017 | Apr. 29, 2016
--- | --- | ---
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | $ 200 | $ 478
Accumulated Amortization | (69) | (298)
Net Assets | 131 | 180
Developed Technology |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | 148 | 403
Accumulated Amortization | (44) | (289)
Net Assets | 104 | 114
Customer Contracts/Relationships |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | 43 | 46
Accumulated Amortization | (19) | (7)
Net Assets | 24 | 39
Other Purchased Intangibles |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | 9 | 10
Accumulated Amortization | (6) | (2)
Net Assets | 3 | 8
Intangible Assets Subject to Amortization |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | 200 | 459
Accumulated Amortization | (69) | (298)
Net Assets | 131 | 161
In Process Research and Development |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Gross Assets | 0 | 19
Accumulated Amortization | 0 | 0
Net Assets | $ 0 | $ 19

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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