PENSION PLANS - Schedule of Multiemployer Plans (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Oct. 27, 2018	Jul. 31, 2021	Jul. 25, 2020
Multiemployer Plans [Line Items]
Total Contributions		$ 4,855	$ 4,906
Pension Plan of Local 464A
Multiemployer Plans [Line Items]
EIN / Pension Plan Number		226051600
Multiemployer Plan Number		001
Pension Protection Act Zone Status	Green		Green
Contributions for the year ended		$ 874	$ 886
UFCW Local 1262 & Employers Pension Fund
Multiemployer Plans [Line Items]
EIN / Pension Plan Number		226074414
Multiemployer Plan Number		001
Pension Protection Act Zone Status	Red		Red
FIP/RP Status Pending / Implemented		Implemented
Contributions for the year ended		$ 2,721	$ 2,789
Surcharge Imposed		No
UFCW Regional Pension Plan
Multiemployer Plans [Line Items]
EIN / Pension Plan Number		166062287
Multiemployer Plan Number		074
Pension Protection Act Zone Status	Red		Red
FIP/RP Status Pending / Implemented		Implemented
Contributions for the year ended		$ 1,260	$ 1,231
Surcharge Imposed		No
Employer contribution, percentage of pension fund contributions (more than)		5.00%

Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan.

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- Definition

Indicates certified zone status of multiemployer pension plan determined to be individually significant. Acceptable values are "Green", "Yellow", "Orange", "Red", "Other", and "NA".

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Amount of cost for employer contribution to multiemployer pension plan determined to be individually significant.

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- Definition

Employer Identification Number (EIN) or Tax Identification Number (TIN) assigned by Internal Revenue Service (IRS) for multiemployer pension plan determined to be individually significant, in nine-digit numeric format.

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Indicates whether funding improvement plan or rehabilitation plan was implemented or pending for multiemployer pension plan, determined to be individually significant. Acceptable values are "No", "Pending", "Implemented", "Other", and "NA".

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Plan number for multiemployer pension plan determined to be individually significant, in three-digit numeric format.

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Indicates whether employer paid surcharge to multiemployer pension plan determined to be individually significant. Acceptable values are "No", "Yes" and "NA".

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Multiemployer Plans, Employer Contribution Percentage of Pension Fund Contributions

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