GOODWILL AND INTANGIBLE ASSETS, NET - Identifiable Intangible Assets (Details) - USD ($) $ in Millions	Apr. 29, 2023	Jul. 30, 2022
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 1,130	$ 1,130
Intangible assets, accumulated amortization	421	367
Finite-lived intangible assets, net	709	763
Indefinite-lived intangible assets, gross carrying amount	1,186	1,186
Indefinite-lived intangible assets, accumulated amortization	421	367
Indefinite-lived intangible assets, net carrying value	765	819
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	339	294
Finite-lived intangible assets, net	668	713
Pharmacy prescription files
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	33	33
Intangible assets, accumulated amortization	21	18
Finite-lived intangible assets, net	12	15
Operating lease intangibles
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	6	6
Intangible assets, accumulated amortization	4	4
Finite-lived intangible assets, net	2	2
Trademarks and tradenames
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	84	84
Intangible assets, accumulated amortization	57	51
Finite-lived intangible assets, net	$ 27	$ 33