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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 02, 2020
Nov. 02, 2019
Apr. 27, 2019
May 02, 2020
Apr. 27, 2019
Aug. 03, 2019
Oct. 22, 2018
Goodwill [Line Items]              
Goodwill $ 19,148     $ 19,148   $ 442,256  
Goodwill and asset impairment charges       424,005      
Projected future cash flows weighted average cost of capital   8.50%          
Amortization expense $ 21,900   $ 19,500 $ 65,500 $ 44,100    
Wholesale              
Goodwill [Line Items]              
Goodwill             $ 80,900
Goodwill and asset impairment charges   $ 421,500          
SUPERVALU              
Goodwill [Line Items]              
Goodwill and asset impairment charges   $ 2,500