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Income Taxes - Projected Effective Tax Rate for Periods (Detail)
3 Months Ended 6 Months Ended
Aug. 03, 2019
Jun. 28, 2018
Aug. 03, 2019
Jul. 28, 2018
Income Tax Disclosure [Abstract]        
Effective tax rates for income from continuing operations 3.00% 27.80% 13.90% 24.10%