GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,041,829	$ 1,036,196
Accumulated Amortization	(704,378)	(685,103)
Net	337,451	351,093
Reacquired franchise rights
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	371,793	370,405
Accumulated Amortization	(186,227)	(182,366)
Net	185,566	188,039
Customer relationships
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	318,038	316,547
Accumulated Amortization	(261,471)	(255,294)
Net	56,567	61,253
Internally-developed software
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	163,027	160,315
Accumulated Amortization	(124,308)	(119,460)
Net	38,719	40,855
Noncompete agreements
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	41,270	41,228
Accumulated Amortization	(36,270)	(35,802)
Net	5,000	5,426
Franchise agreements
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	19,201	19,201
Accumulated Amortization	(16,428)	(16,108)
Net	2,773	3,093
Purchased technology
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	122,700	122,700
Accumulated Amortization	(78,369)	(74,913)
Net	44,331	47,787
Trade name
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	5,800	5,800
Accumulated Amortization	(1,305)	(1,160)
Net	$ 4,495	$ 4,640