Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment.

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Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.

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Amount of contributions made to multiemployer plan by employer.

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Amount of minimum contribution(s) required for future periods to a multiemployer plan by collective bargaining arrangements, statutory obligations, or other contractual obligations. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

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Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

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BENEFIT PLANS (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
BENEFIT PLANS (Details) - USD ($) $ in Thousands	Nov. 04, 2019	May 02, 2020	Feb. 01, 2020	Apr. 27, 2019	May 02, 2020	Apr. 27, 2019
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans, Withdrawal Obligation			$ 10,600
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.10%
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	$ 1,500
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year		$ 0			$ 0
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year		6,000			6,000
SUPERVALU Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Lump sum settlement payments			664,000
Non-cash pension settlement charge			$ 10,300
Multiemployer Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Contributions by Employer		12,300		$ 13,800	38,400	$ 27,400
Unified Grocers, Inc. Cash Balance Plan
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans, Minimum Contribution		$ 8,250			$ 8,250