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PROPERTY AND EQUIPMENT (Details) - USD ($)
3 Months Ended 12 Months Ended
Aug. 03, 2019
Aug. 03, 2019
Jul. 28, 2018
Jul. 29, 2017
Property, Plant and Equipment [Line Items]        
Interest costs capitalized   $ 3,300,000 $ 0 $ 0
Depreciation and amortization   246,825,000 87,631,000 86,051,000
Prepaid Expenses and Other Current Assets        
Property, Plant and Equipment [Line Items]        
Proceeds from sale of distribution center $ 43,200,000      
Property, Plant and Equipment        
Property, Plant and Equipment [Line Items]        
Depreciation and amortization   $ 178,800,000 $ 71,500,000 $ 69,800,000