INTANGIBLE ASSETS (Schedule of Intangible Assets) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 69,502	$ 75,859
Amortizable Intangible Assets, Accumulated Amortization	(24,521)	(19,839)
Indefinite-lived Intangible Assets, Gross Carrying Amount	317,950	335,938
Student Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	8,193	12,459
Amortizable Intangible Assets, Accumulated Amortization	$ (6,972)	(9,323)
Amortizable Intangible Assets, Weighted Average Amortization Period	5 years
Customer Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 42,900	42,900
Amortizable Intangible Assets, Accumulated Amortization	$ (9,598)	(4,923)
Amortizable Intangible Assets, Weighted Average Amortization Period	10 years
Non-compete Agreements [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 700	700
Amortizable Intangible Assets, Accumulated Amortization	$ (700)	(665)
Amortizable Intangible Assets, Weighted Average Amortization Period	1 year
Curriculum/Software [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 6,833	7,147
Amortizable Intangible Assets, Accumulated Amortization	$ (4,265)	(2,329)
Amortizable Intangible Assets, Weighted Average Amortization Period	4 years
Franchise Contracts [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 9,064	10,615
Amortizable Intangible Assets, Accumulated Amortization	$ (1,720)	(1,425)
Amortizable Intangible Assets, Weighted Average Amortization Period	18 years
Proprietary Technology [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 500	500
Amortizable Intangible Assets, Accumulated Amortization	$ (250)	(125)
Amortizable Intangible Assets, Weighted Average Amortization Period	4 years
Clinical Agreements [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 336	393
Amortizable Intangible Assets, Accumulated Amortization	$ (112)	(104)
Amortizable Intangible Assets, Weighted Average Amortization Period	15 years
Trade Names [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 976	1,145
Amortizable Intangible Assets, Accumulated Amortization	(904)	(945)
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 106,132	109,519
Amortizable Intangible Assets, Weighted Average Amortization Period	10 years
Ross Title IV Eligibility and Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 14,100	14,100
Intellectual Property [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	13,940	13,940
Chamberlain Title IV Eligibility and Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	1,200	1,200
AUC Title IV Eligibility and Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	100,000	100,000
Adtalem Brazil Accreditation [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 82,578	$ 97,179