RESTRUCTURING, ACQUISITION AND INTEGRATION RELATED EXPENSES - Restructuring Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Jul. 28, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring, acquisition and integration related expenses	$ 86,383	$ 148,195	$ 9,738
2019 SUPERVALU INC. restructuring expenses | SUPERVALU
Restructuring Cost and Reserve [Line Items]
Restructuring, acquisition and integration related expenses	4,898	74,414	0
Integration and acquisition costs
Restructuring Cost and Reserve [Line Items]
Restructuring, acquisition and integration related expenses	41,610	51,245	4,967
Closed property charges and costs
Restructuring Cost and Reserve [Line Items]
Restructuring, acquisition and integration related expenses	39,875	22,536	0
2018 Earth Origins Market restructuring expenses and loss on sale | 2018 Earth Origins Market
Restructuring Cost and Reserve [Line Items]
Restructuring, acquisition and integration related expenses	$ 0	$ 0	$ 4,771