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Goodwill and Purchased Intangible Assets, Net - Future Amortization Expense Related to Purchased Intangible Assets (Detail) - USD ($)
Jul. 25, 2025
Apr. 25, 2025
Acquired Finite Lived Intangible Assets [Line Items]    
2026 (remainder) $ 15  
2027 21,000,000  
2028 1,000,000  
Net Assets $ 37,000,000 $ 43,000,000