RESTRUCTURING, ACQUISITION AND INTEGRATION RELATED EXPENSES - Restructuring Programs (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 01, 2020	Aug. 03, 2019
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 12,941	$ 1,084
Restructuring program charge	4,898	74,414	[1]
Acquired restructuring liability		12,573
Cash payments	(14,301)	(75,130)
Ending balance	3,538	12,941
Cumulative program charges incurred from inception to date	88,395
SUPERVALU
Restructuring Cost and Reserve [Line Items]
Beginning balance	11,857	0
Restructuring program charge	4,898	74,414	[1]
Acquired restructuring liability		12,573
Cash payments	(13,217)	(75,130)
Ending balance	3,538	11,857
Cumulative program charges incurred from inception to date	79,312
2018 Earth Origins Market
Restructuring Cost and Reserve [Line Items]
Beginning balance	383	383
Restructuring program charge	0	0
Acquired restructuring liability		0
Cash payments	(383)	0
Ending balance	0	383
Cumulative program charges incurred from inception to date	2,219
2017 Cost Saving and Efficiency Initiatives
Restructuring Cost and Reserve [Line Items]
Beginning balance	701	701
Restructuring program charge	0	0
Acquired restructuring liability		0
Cash payments	(701)
Ending balance	0	$ 701
Cumulative program charges incurred from inception to date	6,864
Employee Severance | SUPERVALU
Restructuring Cost and Reserve [Line Items]
Restructuring program charge	$ 43,000

[1] Includes $43.0 million of charges related to change-in-control expense to satisfy outstanding equity awards and severance related costs.