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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregated Revenues (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 27, 2019 | Jul. 28, 2018
Revenue from External Customer [Line Items] |  |
Sales | $ 1,643,502 | $ 1,615,045
Percentage of total sales | 100.00% | 100.00%
Center Store |  |
Revenue from External Customer [Line Items] |  |
Sales | $ 1,011,232 | $ 1,000,316
Percentage of total sales | 61.50% | 62.00%
Fresh |  |
Revenue from External Customer [Line Items] |  |
Sales | $ 558,245 | $ 541,102
Percentage of total sales | 34.00% | 33.50%
Pharmacy |  |
Revenue from External Customer [Line Items] |  |
Sales | $ 69,404 | $ 69,917
Percentage of total sales | 4.20% | 4.30%
Other Product |  |
Revenue from External Customer [Line Items] |  |
Sales | $ 4,621 | $ 3,710
Percentage of total sales | 0.30% | 0.20%

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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