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Balance Sheet Details - Deferred Revenue and Financed Unearned Services Revenue (Detail) - USD ($) $ in Millions | Apr. 29, 2016 | Apr. 24, 2015
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Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 3,385 | $ 3,197
Short-term | 1,794 | 1,724
Long-term | 1,591 | 1,473
Deferred product revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | 68 | 17
Deferred services revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | 3,100 | 3,075
Financed unearned services revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 217 | $ 105

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