GOODWILL AND INTANGIBLE ASSETS, NET - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Jan. 30, 2021	Aug. 01, 2020
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 1,133,688	$ 1,144,811
Intangible assets, accumulated amortization	261,448	231,024
Finite-lived intangible assets, net	872,240	913,787
Indefinite-lived intangible assets, gross carrying amount	1,189,501	1,200,624
Indefinite-lived intangible assets, accumulated amortization	261,448	231,024
Indefinite-lived intangible assets, net carrying value	928,053	969,600
Trademarks and tradenames
Schedule of Intangible Assets [Line Items]
Indefinite-lived intangible assets, gross	55,813	55,813
Indefinite-lived intangible assets, accumulated amortization	0	0
Indefinite-lived intangible assets, net	55,813	55,813
Customer relationships
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	1,007,695	1,007,118
Intangible assets, accumulated amortization	203,748	172,832
Finite-lived intangible assets, net	803,947	834,286
Pharmacy prescription files
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	32,900	32,900
Intangible assets, accumulated amortization	10,597	7,964
Finite-lived intangible assets, net	22,303	24,936
Non-compete agreements
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	1,200	12,900
Intangible assets, accumulated amortization	1,145	11,500
Finite-lived intangible assets, net	55	1,400
Operating lease intangibles
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	8,193	8,193
Intangible assets, accumulated amortization	4,818	4,020
Finite-lived intangible assets, net	3,375	4,173
Trademarks and tradenames
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	83,700	83,700
Intangible assets, accumulated amortization	41,140	34,708
Finite-lived intangible assets, net	$ 42,560	$ 48,992