Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Apr. 26, 2024	Apr. 28, 2023	Apr. 29, 2022
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 57	$ 68	$ 46
Cost of revenues | Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	34	42	33
Operating expenses | Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	22	24	11
Operating expenses | Other Purchased Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 2	$ 2