INTANGIBLE ASSETS - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended
	May 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Intangible Assets [Line Items]
Amortization of Intangible Assets		$ 3,300		$ 1,200
Indefinite-lived Intangible Assets, Period Increase (Decrease)		38,100
Goodwill		854,188	$ 588,007	533,179	$ 588,007
Intangible Assets, Net (Excluding Goodwill), Total		$ 426,089	342,856	$ 304,141	342,856
Percentage Of Intangible Assets Including Goodwill		55.00%
Goodwill, Acquired During Period		$ 274,672			$ 116,007	$ 55,915
Devry University [Member]
Intangible Assets [Line Items]
Fair Value In Excess Of Carrying Value Percentage	6.00%
Goodwill		$ 22,196
Percentage of Decline In Revenue		24.20%
Potential Impairment Of Goodwill And Intangible Assets		$ 23,800
Percentage Of Cost Savings On Revenue Decline	90.00%
Carrington [Member]
Intangible Assets [Line Items]
Potential Impairment Of Goodwill And Intangible Assets		20,200
Carrington [Member] | Title Four Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Goodwill and Intangible Asset Impairment, Total			$ 48,200
Association Of Certified Anti-Money Laundering Specialists [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired		39,900
Goodwill, Acquired During Period		$ 274,700