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Balance Sheet Details - Deferred Revenue and Financed Unearned Services Revenue (Detail) - USD ($) $ in Millions | Apr. 28, 2017 | Apr. 29, 2016
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Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 3,342 | $ 3,385
Short-term | 1,744 | 1,794
Long-term | 1,598 | 1,591
Deferred product revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | 124 | 68
Deferred services revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | 2,999 | 3,100
Financed unearned services revenue |  |
Deferred Revenue And Credits [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 219 | $ 217

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