COMMITMENTS, CONTINGENCIES AND OFF-BALANCE SHEET ARRANGEMENTS (Details) $ in Millions	12 Months Ended
	Aug. 03, 2019 USD ($) case lawsuit retailer
Loss Contingencies [Line Items]
Purchase obligation	$ 260.0
Number of retailers filing similar complaints in other jurisdictions | retailer	3
Schutte and Yarberry v. Supervalu, New Albertson's, Inc., et al
Loss Contingencies [Line Items]
Alleged damages (in excess of)	$ 100.0
Share of potential award	24.0
Payment Guarantee
Loss Contingencies [Line Items]
Guarantor obligations, maximum exposure, undiscounted	36.9
Guarantor obligations, maximum exposure, discounted	$ 26.0
Payment Guarantee | Minimum
Loss Contingencies [Line Items]
Guarantor obligations, guarantees term	1 year
Payment Guarantee | Maximum
Loss Contingencies [Line Items]
Guarantor obligations, guarantees term	11 years
Payment Guarantee | Weighted Average
Loss Contingencies [Line Items]
Guarantor obligations, guarantees term	7 years
Moran Foods, LLC
Loss Contingencies [Line Items]
Professional services agreement term	5 years
Professional services agreement, base amount	$ 30.0
Advantage Logistics | National Opioid Epidemic
Loss Contingencies [Line Items]
Number of suits pending | lawsuit	28
Number of cases consolidated | case	1,800
New Albertson's Inc. | National Opioid Epidemic
Loss Contingencies [Line Items]
Number of suits pending | case	19