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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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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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