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Income Taxes - Effective Tax Rates (Detail) | 9 Months Ended
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Jan. 29, 2021 | Jan. 24, 2020
Income Tax Disclosure [Abstract] |  |
Effective tax rates | 24.70% | 10.20%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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