LONG-TERM DEBT - Line of Credit Facilities (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 29, 2022	Jul. 30, 2022
Line of Credit Facility [Line Items]
Availability	$ 2,600
Unused credit	1,250
ABL Loans
Line of Credit Facility [Line Items]
Availability	$ 1,217
Revolving credit facility | ABL Credit Facility
Line of Credit Facility [Line Items]
Unused facility fees (as a percent)	0.20%
Revolving credit facility | ABL Credit Facility | Maximum
Line of Credit Facility [Line Items]
Unused facility fees (as a percent)	0.20%
Letter of credit
Line of Credit Facility [Line Items]
Availability	$ 133
Letter of credit | ABL Credit Facility
Line of Credit Facility [Line Items]
Letter of credit fees (as a percent)	1.125%
Letter of credit | ABL Credit Facility | Minimum
Line of Credit Facility [Line Items]
Letter of credit fees (as a percent)	1.125%
Letter of credit | ABL Credit Facility | Maximum
Line of Credit Facility [Line Items]
Letter of credit fees (as a percent)	1.375%
Line of credit | Revolving credit facility
Line of Credit Facility [Line Items]
Debt instrument, collateral amount	$ 2,950	$ 2,682
Line of credit | Revolving credit facility | ABL Credit Facility | Base rate
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.00%
Line of credit | Revolving credit facility | ABL Credit Facility | Base rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.00%
Line of credit | Revolving credit facility | ABL Credit Facility | Base rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	0.25%
Line of credit | Revolving credit facility | ABL Credit Facility | LIBOR and BA
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Line of credit | Revolving credit facility | ABL Credit Facility | LIBOR and BA | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Line of credit | Revolving credit facility | ABL Credit Facility | LIBOR and BA | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	1.25%
Line of credit | Revolving credit facility | Certain inventory assets included in Inventories, net
Line of Credit Facility [Line Items]
Debt instrument, collateral amount	$ 2,153	1,789
Line of credit | Revolving credit facility | Certain receivables included in Accounts receivable, net
Line of Credit Facility [Line Items]
Debt instrument, collateral amount	783	878
Line of credit | Revolving credit facility | Pharmacy prescription files included in Intangible assets, net
Line of Credit Facility [Line Items]
Debt instrument, collateral amount	$ 14	$ 15