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BENEFIT PLANS - Schedule of Collective Bargaining Agreement Dates and Contributions to Each Plant (Details) | 6 Months Ended
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Jan. 26, 2019 agreement
Minneapolis Food Distributing Industry Pension Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 1 | [1]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | May 31, 2022 | [1]
Percentage of associates under collective bargaining agreement | 100.00% | [1],[2]
Over Five Percent Contribution | Yes |
Minneapolis Retail Meat Cutters And Food Handlers Pension Fund [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 1 | [3]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | Mar. 04, 2023 | [3]
Percentage of associates under collective bargaining agreement | 100.00% | [2],[3]
Over Five Percent Contribution | Yes |
Central States, Southeast and Southwest Areas Pension Fund(2)(3) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 4 | [1],[3]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | Sep. 14, 2019 | [1],[3]
Percentage of associates under collective bargaining agreement | 41.70% | [1],[2],[3]
Over Five Percent Contribution | No |
UFCW Unions and Participating Employers Pension Fund |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 2 | [3]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | Jul. 11, 2020 | [3]
Percentage of associates under collective bargaining agreement | 71.00% | [2],[3]
Over Five Percent Contribution | Yes |
Western Conference of Teamsters Pension Trust(2) |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 21 | [1]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | Jul. 17, 2021 | [1]
Percentage of associates under collective bargaining agreement | 16.60% | [1],[2]
Over Five Percent Contribution | No |
UFCW Unions and Employers Pension Plan |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Collective Bargaining Agreements | 1 | [3]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date | Apr. 06, 2019 | [3]
Percentage of associates under collective bargaining agreement | 100.00% | [2],[3]
Over Five Percent Contribution | Yes |
[1] | These multiemployer pension plans reflect plans of continuing operations.
[2] | Company participating employees in the most significant collective bargaining agreement as a percent of all Company employees participating in the respective fund.
[3] | These multiemployer pension plans reflect plans of discontinued operations.

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- Definition Expiration date of the collective bargaining arrangement requiring contributions to the multiemployer plan, in CCYY-MM-DD format. 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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