SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets With Definite Lives (Details)	12 Months Ended
	Aug. 01, 2020
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	7 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years
Noncompete Agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	2 years
Noncompete Agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years
Trademarks and tradenames | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	2 years
Trademarks and tradenames | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years
Leases in place | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	1 year
Leases in place | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	8 years
Favorable operating leases | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	1 year
Favorable operating leases | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	8 years
Unfavorable operating leases | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	2 years
Unfavorable operating leases | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	11 years
Pharmacy prescription files | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	7 years