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Commitments and Contingencies - Additional Information (Detail) - USD ($) | 6 Months Ended |
--- | --- | ---
Oct. 30, 2015 | Oct. 24, 2014 | Apr. 24, 2015
Commitments and Contingencies Disclosure [Line Items] |  |  |
Future annual minimum lease payments | $ 204,000,000 |  |
Accrued purchase commitments with contract manufacturers | 12,000,000 |  | $ 17,000,000
Sale of finance receivables | 72,000,000 | $ 89,000,000 |
Legal proceedings and claims | $ 0 |  |
Maximum |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Terms of recourse leases | 3 years |  |
Inventory |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Purchase orders and other commitments | $ 262,000,000 |  |
Construction Related |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Purchase orders and other commitments | 36,000,000 |  |
Other |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Purchase orders and other commitments | $ 172,000,000 |  |

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