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Goodwill and Purchased Intangible Assets, Net | 12 Months Ended
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Apr. 28, 2017
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Purchased Intangible Assets, Net | 6. Goodwill and Purchased Intangible Assets, Net Goodwill activity is summarized as follows (in millions):
Balance as of April 24, 2015 |  | $ | 1,027 |
Goodwill acquired |  |  | 649 |
Balance as of April 29, 2016 |  |  | 1,676 |
Goodwill acquired |  |  | 8 |
Balance as of April 28, 2017 |  | $ | 1,684 |
Purchased intangible assets are summarized below (in millions):
|  | April 28, 2017 |  |  | April 29, 2016 |
|  | Gross |  |  | Accumulated |  |  | Net |  |  | Gross |  |  | Accumulated |  |  | Net |
|  | Assets |  |  | Amortization |  |  | Assets |  |  | Assets |  |  | Amortization |  |  | Assets |
Developed technology |  | $ | 148 |  |  | $ | (44 | ) |  | $ | 104 |  |  | $ | 403 |  |  | $ | (289 | ) |  | $ | 114 |
Customer contracts/relationships |  |  | 43 |  |  |  | (19 | ) |  |  | 24 |  |  |  | 46 |  |  |  | (7 | ) |  |  | 39 |
Other purchased intangibles |  |  | 9 |  |  |  | (6 | ) |  |  | 3 |  |  |  | 10 |  |  |  | (2 | ) |  |  | 8 |
Total intangible assets subject to amortization |  |  | 200 |  |  |  | (69 | ) |  |  | 131 |  |  |  | 459 |  |  |  | (298 | ) |  |  | 161 |
In-process research and development |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 19 |  |  |  | — |  |  |  | 19 |
Total purchased intangible assets |  | $ | 200 |  |  | $ | (69 | ) |  | $ | 131 |  |  | $ | 478 |  |  | $ | (298 | ) |  | $ | 180 |
In fiscal 2017, the in-process research and development project related to the SolidFire acquisition was completed, and the associated intangible asset was reclassified to developed technology. During fiscal 2016, we recorded a charge of $11 million to fully impair developed technology related to our fiscal 2013 acquisition of CacheIQ as a result of our discontinued use of such technology. The impairment charge is included in accumulated amortization as of April 29, 2016 in the table above. Amortization expense for purchased intangible assets is summarized below (in millions):
|  | Year Ended |  |  | Statement of
|  | April 28, 2017 |  |  | April 29, 2016 |  |  | April 24, 2015 |  |  | Operations Classifications
Developed technology |  | $ | 29 |  |  | $ | 61 |  |  | $ | 63 |  |  | Cost of revenues
Customer contracts/relationships |  |  | 14 |  |  |  | 5 |  |  |  | 1 |  |  | Operating expenses
Other purchased intangibles |  |  | 5 |  |  |  | 1 |  |  |  | — |  |  | Operating expenses
Total |  | $ | 48 |  |  | $ | 67 |  |  | $ | 64 |  |  |
As of April 28, 2017, future amortization expense related to purchased intangible assets is as follows (in millions):
Fiscal Year |  | Amount |
2018 |  | $ | 49 |
2019 |  |  | 42 |
2020 |  |  | 25 |
2021 |  |  | 15 |
Total |  | $ | 131 |

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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