BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions	Jul. 30, 2022	Jul. 31, 2021	Aug. 01, 2020
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	$ 1,716	$ 2,118
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	1,716	2,118	$ 1,991
Benefit obligation at end of year	(1,706)	(2,093)	$ (2,260)
Funded (unfunded) status at end of year	(10)	(25)
SUPERVALU INC. Retirement Plan | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	1,716	1,860
Benefit obligation at end of year	(1,698)	(1,796)
Funded (unfunded) status at end of year	(18)	(64)
Other Pension Plan | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at end of year	0	258
Benefit obligation at end of year	(8)	(297)
Funded (unfunded) status at end of year	$ 8	$ 39