INTANGIBLE ASSETS (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Unit) (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	$ 363,598	$ 322,226	$ 349,078
Medical and Healthcare
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	137,500	137,500	137,500
Professional Education
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	67,812	27,912	27,912
Technology And Business
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	136,441	134,969	121,321
U.S. Traditional Postsecondary
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	$ 21,845	$ 21,845	$ 62,345