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COMMITMENTS, CONTINGENCIES AND OFF-BALANCE SHEET ARRANGEMENTS (Details) $ in Millions |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Nov. 17, 2017 USD ($) | Aug. 30, 2017 plaintiff | Oct. 27, 2018 USD ($) | Nov. 30, 2014 complaint
Guarantor Obligations [Line Items] |  |  |  |
Purchase Obligation |  |  | $ 0.4 |
Payment Guarantee [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Guarantor Obligations, Term |  |  | 1 year |
Guarantor Obligations, Maximum Exposure, Undiscounted |  |  | $ 46.5 |
Guarantor Obligations, Maximum Exposure, Discounted |  |  | $ 35.7 |
Maximum | Payment Guarantee [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Guarantor Obligations, Term |  |  | 12 years |
Weighted Average [Member] | Payment Guarantee [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Guarantor Obligations, Term |  |  | 6 years |
Midwest Plaintiffs vs. Supervalu [Member] | Settled Litigation [Member] | SUPERVALU [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Litigation Settlement, Amount Awarded to Other Party | $ 9.0 |  |  |
Supervalu Inc. Customer Data Security Breach Litigation [Member] | SUPERVALU [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Loss Contingency, Number Of Class Action Complaints | complaint |  |  |  | 4
Loss Contingency, Number Of Plaintiffs Dismissed | plaintiff |  | 14 |  |
Loss Contingency, Number of Plaintiffs | plaintiff |  | 15 |  |
Loss Contingency, Insurance Coverage, Amount Above Deductible |  |  | $ 50.0 |
Loss Contingency, Insurance Deductible Amount |  |  | $ 1.0 |
Moran Foods, LLC [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Professional Services Agreement Term |  |  | 5 years |
Professional Services Agreement, Base Amount |  |  | $ 30.0 |

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