Supplemental Financial Information - Other Income (expense), Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 29, 2021	Jan. 24, 2020	Jan. 29, 2021	Jan. 24, 2020
Nonoperating Income Expense [Abstract]
Interest income	$ 2	$ 10	$ 7	$ 41
Interest expense	(19)	(14)	(55)	(41)
Other income (expense), net	6	12	(2)	26
Total other income (expense), net	$ (11)	$ 8	$ (50)	$ 26