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Income Taxes - Deferred Income Taxes - Undistributed Earnings from Foreign Subsidiaries - Narrative (Detail) - USD ($)
$ in Millions
6 Months Ended
Nov. 03, 2019
Apr. 28, 2019
Oct. 28, 2018
Income Taxes [Line Items]      
Dividends received deduction percentage for earnings and profits received from foreign corporation 100.00%    
Dividends received deduction, foreign corporation ownership percentage 10.00%    
Deferred tax liability, undistributed earnings from foreign subsidiaries $ 3.2 $ 3.5 $ 3.1