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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Apr. 28, 2017 | Apr. 29, 2016 | Apr. 24, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Debt issuance costs | $ 128 | $ 138 |
Other Information [Abstract] |  |  |
Shipping and handling costs | 370 | 316 | $ 284
Tax benefit from exercise of stock-based awards | $ 92 | 82 | $ 81
Minimum |  |  |
Intangible Assets |  |  |
Intangible assets, estimated useful life | 3 years |  |
Maximum |  |  |
Intangible Assets |  |  |
Intangible assets, estimated useful life | 20 years |  |
Accounting Standards Update 2015-03 | Assets |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Debt issuance costs |  | (138) |
Accounting Standards Update 2015-03 | Liabilities |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Debt issuance costs |  | $ 138 |

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