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GOODWILL AND INTANGIBLE ASSETS, NET - Identifiable Intangible Assets (Details) - USD ($) $ in Millions | Oct. 30, 2021 | Jul. 31, 2021
--- | --- | ---
Schedule of Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | $ 1,131 | $ 1,131
Intangible assets, accumulated amortization | 314 | 296
Finite-lived intangible assets, net | 817 | 835
Indefinite-lived intangible assets, gross carrying amount | 1,187 | 1,187
Indefinite-lived intangible assets, accumulated amortization | 314 | 296
Indefinite-lived intangible assets, net carrying value | 873 | 891
Trademarks and tradenames |  |
Schedule of Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets, gross | 56 | 56
Indefinite-lived intangible assets, accumulated amortization | 0 | 0
Indefinite-lived intangible assets, net | 56 | 56
Customer relationships |  |
Schedule of Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 1,007 | 1,007
Intangible assets, accumulated amortization | 249 | 234
Finite-lived intangible assets, net | 758 | 773
Pharmacy prescription files |  |
Schedule of Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 33 | 33
Intangible assets, accumulated amortization | 14 | 13
Finite-lived intangible assets, net | 19 | 20
Operating lease intangibles |  |
Schedule of Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 7 | 7
Intangible assets, accumulated amortization | 5 | 4
Finite-lived intangible assets, net | 2 | 3
Trademarks and tradenames |  |
Schedule of Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 84 | 84
Intangible assets, accumulated amortization | 46 | 45
Finite-lived intangible assets, net | $ 38 | $ 39

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