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Financial Instruments and Fair Value Measurements - Summary of Investments at Cost or Amortized Cost (Detail) - USD ($) $ in Millions | Oct. 25, 2024 | Apr. 26, 2024
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | $ 1,508 | $ 2,560
U.S. Treasury and Government Debt Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 744 | 1,349
Money Market Funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 707 | 1,161
Certificates of Deposit |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 14 | 12
Mutual Funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | $ 43 | $ 38

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