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Income Taxes - Differences Between Income Tax Expense from Continuing Operations at Federal Income Tax Rate and Effective Income Tax Rate (Detail)
12 Months Ended
May 02, 2021
May 03, 2020
Apr. 28, 2019
Income Tax Disclosure [Abstract]      
U.S. federal income tax rate 21.00% 21.00% 21.00%
valuation allowance 78.40% (1.60%) (35.00%)
write-off of U.S. foreign income tax credits     35.10%
income tax effects of the 2017 Tax Cuts and Jobs Act (33.8)   (4.3)
global intangible low taxed income tax (GILTI)   (19.00%) 16.90%
foreign tax rate differential 10.90% (5.40%) 4.80%
income tax effects of Chinese foreign exchange gains and losses (8.40%) (5.00%) 2.20%
withholding taxes associated with foreign tax jurisdictions 7.70% (16.00%) 8.10%
income tax effects of impairment of nondeductible goodwill   (11.30%)  
other (5.10%) (6.40%) 2.60%
Effective income tax rate 70.70% (43.70%) 51.40%