COMMITMENTS, CONTINGENCIES AND OFF-BALANCE SHEET ARRANGEMENTS (Details)	3 Months Ended
	Oct. 31, 2020 USD ($) case
Loss Contingencies [Line Items]
Lessor receivables	$ 0
Non-cancelable future purchase obligations	$ 203,000,000
Number of suits pending | case	42
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)	$ 100,000,000
Share of potential award	$ 24,000,000
Moran Foods, LLC
Loss Contingencies [Line Items]
Professional services agreement term	5 years
Professional services agreement, base amount	$ 30,000,000
Guarantee Obligations
Loss Contingencies [Line Items]
Estimated loss	1,000,000.0
Indemnification Agreement
Loss Contingencies [Line Items]
Estimated loss	0
Lease Guarantee Arrangements
Loss Contingencies [Line Items]
Estimated loss	0
Payment guarantee
Loss Contingencies [Line Items]
Guarantor obligations, maximum exposure, undiscounted	31,300,000
Guarantor obligations, maximum exposure, discounted	$ 26,200,000
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