GOODWILL AND INTANGIBLE ASSETS, NET - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	May 01, 2021	Aug. 01, 2020
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 1,132,557	$ 1,144,811
Intangible assets, accumulated amortization	278,780	231,024
Finite-lived intangible assets, net	853,777	913,787
Indefinite-lived intangible assets, gross carrying amount	1,188,370	1,200,624
Indefinite-lived intangible assets, accumulated amortization	278,780	231,024
Indefinite-lived intangible assets, net carrying value	909,590	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	1,008,194	1,007,118
Intangible assets, accumulated amortization	219,508	172,832
Finite-lived intangible assets, net	788,686	834,286
Pharmacy prescription files
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	32,900	32,900
Intangible assets, accumulated amortization	11,772	7,964
Finite-lived intangible assets, net	21,128	24,936
Non-compete agreements
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	0	12,900
Intangible assets, accumulated amortization	0	11,500
Finite-lived intangible assets, net	0	1,400
Operating lease intangibles
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,763	8,193
Intangible assets, accumulated amortization	4,721	4,020
Finite-lived intangible assets, net	3,042	4,173
Trademarks and tradenames
Schedule of Intangible Assets [Line Items]
Finite-lived intangible assets, gross	83,700	83,700
Intangible assets, accumulated amortization	42,779	34,708
Finite-lived intangible assets, net	$ 40,921	$ 48,992