Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 26, 2024	Jan. 27, 2023	Jan. 26, 2024	Jan. 27, 2023
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 14	$ 17	$ 43	$ 51
Cost of revenues | Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	9	10	26	31
Operating expenses | Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	5	7	16	19
Operating expenses | Other Purchased Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 0	$ 0	$ 1	$ 1