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LONG-TERM DEBT - Narrative (Details) $ in Thousands |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 22, 2018 USD ($) | Oct. 01, 2018 USD ($) | Oct. 27, 2018 USD ($) quarter | Oct. 28, 2017 USD ($) | Jul. 28, 2018 USD ($) | Aug. 14, 2014 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of Long-term Debt |  |  | $ 110,000 | $ 2,985 |  |
Loss on debt extinguishment |  |  | 1,114 | $ 0 |  |
Debt Issuance Costs, Net |  |  | 50,097 |  | $ 1,164 |
Debt Instrument, Unamortized Discount |  |  | 44,903 |  | 0 |
Restricted cash |  |  | $ 566,353 |  | $ 0 |
Term loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from borrowings of long-term debt |  |  |  |  |  | $ 150,000
Fixed charge coverage ratio, minimum |  |  | 1.20 |  |  |
Fixed charge coverage ratio, number of quarters | quarter |  |  | 4 |  |  |
Funded debt ratio, number of quarters | quarter |  |  | 4 |  |  |
Maximum funded debt ratio |  |  | 3.00 |  |  |
Maximum outstanding borrowings, percentage of mortgaged property value |  |  | 75.00% |  |  |
Repayments of Long-term Debt |  | $ 110,000 |  |  |  |
Loss on debt extinguishment |  | $ 1,100 |  |  |  |
7.75% Supervalu Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long term debt, including current portion, carrying value | $ 350,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 7.75% |  |  |
6.75% Supervalu Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Long term debt, including current portion, carrying value | $ 180,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.75% |  |  |
Base Rate | Term loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 0.75% |  |  |
LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Minimum LIBOR rate | 0.00% |  |  |  |  |
LIBOR | Term loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.75% |  |  |
Secured Debt [Member] | Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Face Amount | $ 1,950,000 |  |  |  |  |
Line of Credit, Additional Borrowing Capacity | 656,250 |  |  |  |  |
Debt Instrument, Guarantees Exception, Carrying Value of Owned Real Property | 10,000 |  |  |  |  |
Debt Issuance Costs, Net |  |  | $ 50,100 |  |  |
Debt Instrument, Unamortized Discount |  |  | 44,900 |  |  |
Secured Debt [Member] | Term B Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Face Amount | $ 1,800,000 |  |  |  |  |
Debt Instrument, Term | 7 years |  |  |  |  |
Long term debt, including current portion, carrying value |  |  | 1,800,000 |  |  |
Secured Debt [Member] | 364-day Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Face Amount | $ 150,000 |  |  |  |  |
Debt Instrument, Term | 364 days |  |  |  |  |
Long term debt, including current portion, carrying value |  |  | 150,000 |  |  |
Secured Debt [Member] | Base Rate | Term B Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 3.25% |  |  |  |  |
Secured Debt [Member] | Base Rate | 364-day Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.00% |  |  |  |  |
Secured Debt [Member] | LIBOR | Term B Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 4.25% |  |  |  |  |
Secured Debt [Member] | LIBOR | 364-day Tranche |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.00% |  |  |  |  |
Long-term Debt and Capital Lease Obligations, Current [Member] | Secured Debt [Member] | Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  |  | $ 15,900 |  |  |

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