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BENEFIT PLANS - Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 01, 2020 USD ($) | Jul. 30, 2022 USD ($) employee | Jul. 31, 2021 USD ($)
Retirement Benefits [Abstract] |  |  |
Percentage of union employees that participate in multiemployer defined benefit pension plans under collective bargaining agreements |  | 65.00% |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Number of union employees | employee |  | 10,900 |
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] |  | Other long-term liabilities | Other long-term liabilities
Multiemployer pension plan withdrawal liability |  |  | $ 11
Multiemployer pension plan, payment period |  | 20 years |
Other long-term liabilities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Multiemployer pension plan withdrawal liability |  | $ 94 | 110
Accrued Liabilities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Multiemployer pension plan withdrawal liability |  | 7 | 7
Postemployment Retirement Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accrued compensation and benefits |  | 4 | 2
Pension and other postretirement benefit obligations |  | $ 5 | $ 5
Supervalu Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Settlement charge (gain) | $ (2) |  |
Supervalu Retirement Plan | Measurement Input, Discount Rate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Measurement input (as a percent) | 0.031 |  |

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