Supplemental Financial Information - Product Warranty Liabilities (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 28, 2022	Jan. 29, 2021	Jan. 28, 2022	Jan. 29, 2021	Apr. 30, 2021
Movement In Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 28	$ 35	$ 32	$ 41
Expense accrued during the period	1	5	7	10
Warranty costs incurred	(4)	(6)	(14)	(17)
Balance at end of period	25	34	25	34
Standard Product Warranty Accrual, Balance Sheet Classification [Abstract]
Accrued expenses	17		17		$ 21
Other long-term liabilities	8		8		11
Total warranty liabilities	$ 25	$ 34	$ 25	$ 34	$ 32