Goodwill and Purchased Intangible Assets, Net - Amortization Expense for Purchased Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 29, 2021	Oct. 30, 2020	Oct. 29, 2021	Oct. 30, 2020
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 10	$ 15	$ 19	$ 25
Cost of revenues | Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	7	12	14	22
Operating expenses | Customer Contracts/Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	2	3	3	3
Operating expenses | Other Purchased Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Amortization expense	$ 1	$ 0	$ 2	$ 0