COMMITMENTS, CONTINGENCIES AND OFF-BALANCE SHEET ARRANGEMENTS (Details) $ in Millions	9 Months Ended
	May 02, 2020 USD ($) case
Loss Contingencies [Line Items]
Non-cancelable future purchase obligations	$ 252.0
Number of Suits Pending | case	38
Number of Cases Consolidated | case	1,800
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	32.9
Guarantor Obligations, Maximum Exposure, Discounted	$ 25.8
Payment Guarantee | Minimum
Loss Contingencies [Line Items]
Guarantor Obligations, Guarantees Term	1 year
Payment Guarantee | Maximum
Loss Contingencies [Line Items]
Guarantor Obligations, Guarantees Term	10 years
Payment Guarantee | Weighted Average
Loss Contingencies [Line Items]
Guarantor Obligations, Guarantees Term	6 years
Moran Foods, LLC
Loss Contingencies [Line Items]
Professional Services Agreement Term	5 years
Professional Services Agreement, Base Amount	$ 30.0