Income Taxes - Differences Between Income Tax Expense from Continuing Operations at Federal Income Tax Rate and Effective Income Tax Rate (Detail)	3 Months Ended								12 Months Ended
	May 03, 2020	Feb. 02, 2020	Nov. 03, 2019	Aug. 04, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	May 03, 2020	Apr. 28, 2019	Apr. 29, 2018
Income Tax Disclosure [Abstract]
federal income tax rate	21.00%								21.00%	21.00%	30.40%
global intangible low taxed income tax (GILTI)									(24.40%)	16.90%
foreign tax rate differential									(16.10%)	13.00%	3.70%
income tax effects of impairment of nondeductible goodwill									(11.30%)
uncertain income tax positions									(4.80%)	0.50%
income tax effects of Chinese foreign exchange gains and losses									(5.00%)	2.20%	(2.80%)
write-off of U.S. foreign income tax credits										35.10%
valuation allowance									(1.60%)	(35.00%)	0.40%
income tax effects of the 2017 Tax Cuts and Jobs Act										(4.3)	(7.6)
Other									(1.50%)	2.00%	(2.70%)
Effective income tax rate	(3.80%)	(36.00%)	42.40%	48.90%	155.50%	27.80%	30.00%	46.90%	(43.70%)	51.40%	21.40%