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GOODWILL AND INTANGIBLE ASSETS, NET - Identifiable Intangible Assets (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jan. 29, 2022 | Jan. 30, 2021 | Jan. 29, 2022 | Jan. 30, 2021 | Jul. 31, 2021
Goodwill and Intangible Assets [Abstract] |  |  |  |  |
Amortization expense | $ 18 | $ 19 | $ 36 | $ 42 |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible assets, gross | 1,131 |  | 1,131 |  | $ 1,131
Intangible assets, accumulated amortization | 332 |  | 332 |  | 296
Finite-lived intangible assets, net | 799 |  | 799 |  | 835
Indefinite-lived intangible assets, gross carrying amount | 1,187 |  | 1,187 |  | 1,187
Indefinite-lived intangible assets, accumulated amortization | 332 |  | 332 |  | 296
Indefinite-lived intangible assets, net carrying value | 855 |  | 855 |  | 891
Trademarks and tradenames |  |  |  |  |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Indefinite-lived intangible assets, gross | 56 |  | 56 |  | 56
Indefinite-lived intangible assets, accumulated amortization | 0 |  | 0 |  | 0
Indefinite-lived intangible assets, net | 56 |  | 56 |  | 56
Customer relationships |  |  |  |  |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible assets, gross | 1,007 |  | 1,007 |  | 1,007
Intangible assets, accumulated amortization | 264 |  | 264 |  | 234
Finite-lived intangible assets, net | 743 |  | 743 |  | 773
Pharmacy prescription files |  |  |  |  |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible assets, gross | 33 |  | 33 |  | 33
Intangible assets, accumulated amortization | 15 |  | 15 |  | 13
Finite-lived intangible assets, net | 18 |  | 18 |  | 20
Operating lease intangibles |  |  |  |  |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible assets, gross | 7 |  | 7 |  | 7
Intangible assets, accumulated amortization | 5 |  | 5 |  | 4
Finite-lived intangible assets, net | 2 |  | 2 |  | 3
Trademarks and tradenames |  |  |  |  |
Schedule of Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible assets, gross | 84 |  | 84 |  | 84
Intangible assets, accumulated amortization | 48 |  | 48 |  | 45
Finite-lived intangible assets, net | $ 36 |  | $ 36 |  | $ 39

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- Definition Finite-Lived and Indefinite-lived Intangible Assets, Accumulated Amortization + References No definition available. + Details
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- Definition Goodwill and Intangible Assets [Abstract] + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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