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Financial Instruments and Fair Value Measurements - Summary of Investments at Cost or Amortized Cost (Detail) - USD ($) $ in Millions | Apr. 25, 2025 | Apr. 26, 2024
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | $ 3,216 | $ 2,560
U.S. Treasury and Government Debt Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 2,025 | 1,349
Money market funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 1,126 | 1,161
Certificates of Deposit |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | 24 | 12
Mutual Funds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost or amortized cost | $ 41 | $ 38

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