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SHARE-BASED AWARDS - Restricted Stock Awards (Details) - Restricted Stock Units, Supervalu Replacement Awards and Performance Stock Units - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Aug. 03, 2019
Number of Shares (in millions)
Beginning balance (in shares)	7.4	4.4	1.3
Supervalu replacement awards (in shares)			4.3
Granted (in shares)	2.4	6.0	1.7
Vested (in shares)	(2.6)	(1.0)	(2.0)
Forfeited/Canceled (in shares)	(0.4)	(2.0)	(0.9)
Ending balance (in shares)	6.8	7.4	4.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Beginning balance (in dollars per share)	$ 18.54	$ 31.11	$ 41.78
Supervalu replacement awards (in dollars per share)			32.50
Granted (in dollars per share)	17.55	7.67	23.30
Vested (in dollars per share)	19.94	20.59	34.81
Forfeited/Canceled (in dollars per share)	24.11	12.39	30.83
Beginning balance (in dollars per share)	$ 17.33	$ 18.54	$ 31.11
Intrinsic value of restricted stock units vested	$ 51	$ 21	$ 36

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- Definition

The intrinsic value of equity-based payment equity instrument, excluding stock (or unit) options, that vested during the reporting period as calculated by applying the disclosed pricing methodology.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Business Combination

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Business Combination, Weighted Average Grant Date Fair Value

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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