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Financial Instruments and Fair Value Measurements - Summary of Investments at Cost or Amortized Cost (Detail) - USD ($) $ in Millions	Oct. 24, 2025	Apr. 25, 2025
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$ 2,388	$ 3,216
U.S. Treasury and Government Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	942	2,025
Money Market Funds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	1,370	1,126
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	27	24
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$ 49	$ 41

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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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