GOODWILL AND INTANGIBLE ASSETS - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Jul. 28, 2018
Amortizing intangible assets:
Gross Carrying Amount	$ 1,119,792	$ 201,846
Accumulated Amortization	134,547	64,438
Net	985,245	137,408
Intangibles assets, net
Gross Carrying Amount	1,175,605	257,647
Accumulated Amortization	134,547	64,438
Net	1,041,058	193,209
Customer relationships
Amortizing intangible assets:
Gross Carrying Amount	1,007,089	197,246
Accumulated Amortization	111,940	61,543
Net	895,149	135,703
Non-compete agreement
Amortizing intangible assets:
Gross Carrying Amount	12,900	2,900
Accumulated Amortization	6,237	1,914
Net	6,663	986
Operating lease intangibles
Amortizing intangible assets:
Gross Carrying Amount	32,103	0
Accumulated Amortization	2,209	0
Net	29,894	0
Trademarks and tradenames
Amortizing intangible assets:
Gross Carrying Amount	67,700	1,700
Accumulated Amortization	14,161	981
Net	53,539	719
Trademarks and tradenames
Indefinite lived intangible assets:
Gross Carrying Amount	55,813	55,801
Accumulated Amortization	0	0
Net	$ 55,813	$ 55,801