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Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) - USD ($)
$ in Millions
 12 Months Ended
Apr. 25, 2025
Apr. 26, 2024
Apr. 28, 2023
Acquired Finite Lived Intangible Assets [Line Items]      
Amortization expense $ 47 $ 57 $ 68
Cost of revenues | Developed Technology      
Acquired Finite Lived Intangible Assets [Line Items]      
Amortization expense 28 34 42
Operating expenses | Customer Contracts/Relationships      
Acquired Finite Lived Intangible Assets [Line Items]      
Amortization expense 19 22 24
Operating expenses | Other Purchased Intangibles      
Acquired Finite Lived Intangible Assets [Line Items]      
Amortization expense $ 0 $ 1 $ 2