SHARE-BASED AWARDS - Stock Options (Details)	12 Months Ended
	Aug. 03, 2019 USD ($) $ / shares shares
Number of Options
Supervalu replacement options (in shares) | shares	1,625,070
Weighted Average Exercise Price
Supervalu replacement options (in dollars per share) | $ / shares	$ 41.91
Employee Stock Option
Number of Options
Outstanding at beginning of year (in shares) | shares	291,677
Exercised (in shares) | shares	(6,979)
Forfeited (in shares) | shares	(1,420)
Canceled (in shares) | shares	(139,111)
Outstanding at beginning of year (in shares) | shares	1,769,237
Exercisable at end of year (in shares) | shares	1,760,980
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 52.46
Exercised (in dollars per share) | $ / shares	16.97
Forfeited (in dollars per share) | $ / shares	13.13
Canceled (in dollars per share) | $ / shares	50.50
Outstanding at end of year (in dollars per share) | $ / shares	43.06
Exercisable at end of year (in dollars per share) | $ / shares	$ 43.02
Weighted Average Remaining Contractual Term
Outstanding at end of year (in years)	5 years 10 months 2 days
Exercisable at end of year (in years)	5 years 10 months 2 days
Share-based Compensation, Arrangement by Share-based Payment Award, Aggregate Intrinsic Value [Abstract]
Outstanding at end of year | $	$ 0
Exercisable at end of year | $	$ 0