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Goodwill and Purchased Intangible Assets, Net (Tables) | 12 Months Ended
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Apr. 29, 2016
Goodwill And Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill Activity | Goodwill activity is summarized as follows (in millions):
Balance as of April 25, 2014 |  | $ | 988 |
Goodwill acquired |  |  | 39 |
Balance as of April 24, 2015 |  |  | 1,027 |
Goodwill acquired |  |  | 649 |
Balance as of April 29, 2016 |  | $ | 1,676 |
Purchased Intangible Assets | Purchased intangible assets are summarized below (in millions):
|  | April 29, 2016 |  |  | April 24, 2015 |
|  | Gross |  |  | Accumulated |  |  | Net |  |  | Gross |  |  | Accumulated |  |  | Net |
|  | Assets |  |  | Amortization |  |  | Assets |  |  | Assets |  |  | Amortization |  |  | Assets |
Developed technology |  | $ | 403 |  |  | $ | (289 | ) |  | $ | 114 |  |  | $ | 313 |  |  | $ | (225 | ) |  | $ | 88 |
Customer contracts/relationships |  |  | 46 |  |  |  | (7 | ) |  |  | 39 |  |  |  | 5 |  |  |  | (3 | ) |  |  | 2 |
Other purchased intangibles |  |  | 10 |  |  |  | (2 | ) |  |  | 8 |  |  |  | 3 |  |  |  | (3 | ) |  |  | — |
Total intangible assets subject to amortization |  |  | 459 |  |  |  | (298 | ) |  |  | 161 |  |  |  | 321 |  |  |  | (231 | ) |  |  | 90 |
In-process research and development |  |  | 19 |  |  |  | — |  |  |  | 19 |  |  |  | — |  |  |  | — |  |  |  | — |
Total purchased intangible assets |  | $ | 478 |  |  | $ | (298 | ) |  | $ | 180 |  |  | $ | 321 |  |  | $ | (231 | ) |  | $ | 90 |
Amortization Expense for Purchased Intangible Assets | Amortization expense for purchased intangible assets is summarized below (in millions):
|  | Year Ended |  |  | Statement of
|  | April 29, 2016 |  |  | April 24, 2015 |  |  | April 25, 2014 |  |  | Operations Classifications
Developed technology |  | $ | 61 |  |  | $ | 63 |  |  | $ | 57 |  |  | Cost of revenues
Customer contracts/relationships |  |  | 5 |  |  |  | 1 |  |  |  | 1 |  |  | Operating expenses
Other purchased intangibles |  |  | 1 |  |  |  | — |  |  |  | 1 |  |  | Operating expenses
Total |  | $ | 67 |  |  | $ | 64 |  |  | $ | 59 |  |  |
Future Amortization Expense Related to Purchased Intangible Assets | As of April 29, 2016, future amortization expense related to purchased intangible assets is as follows (in millions):
Fiscal Year |  | Amount |
2017 |  | $ | 64 |
2018 |  |  | 43 |
2019 |  |  | 35 |
2020 |  |  | 23 |
2021 |  |  | 15 |
Total |  | $ | 180 |

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