RESTRUCTURING, ACQUISITION AND INTEGRATION RELATED EXPENSES - Restructuring Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Jul. 29, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 153,539	$ 9,738	$ 6,864
Restructuring, Settlement and Impairment Provisions
Restructuring Cost and Reserve [Line Items]
Acquisition and integration costs	56,589	4,967	0
SUPERVALU
Restructuring Cost and Reserve [Line Items]
Restructuring charges	74,414	0	0
Earth Origins Market
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	4,771	0
2017 Cost Saving and Efficiency Initiatives
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	6,864
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 22,536	$ 0	$ 0