INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill, by Segment) (Detail) - USD ($) $ in Thousands	6 Months Ended			12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Goodwill [Line Items]
Goodwill beginning balance	$ 588,007	$ 542,994	$ 552,329	$ 519,879
Purchase Accounting Adjustment	(3,122)	4,575
Acquisitions	274,620	11,394	104,613	55,915
Foreign currency exchange rate changes	(4,667)	34,855	(20,975)	(23,465)
Goodwill ending balance	854,838	588,007	542,994	552,329
Impairments		(5,811)	(92,973)
Medical And Healthcare [Member]
Goodwill [Line Items]
Goodwill beginning balance	495,927	495,927	495,927	495,927
Purchase Accounting Adjustment	0	0
Acquisitions	0	0	0	0
Foreign currency exchange rate changes	0	0	0	0
Goodwill ending balance	495,927	495,927	495,927	495,927
Accumulated Impairment Losses beginning balance	(185,717)	(179,906)	(86,933)	(86,933)
Impairments		(5,811)	(92,973)
Accumulated Impairment Losses ending balance	(185,717)	(185,717)	(179,906)	(86,933)
International And Professional Education [Member]
Goodwill [Line Items]
Goodwill beginning balance	255,601	204,777	121,139	88,689
Purchase Accounting Adjustment	(3,122)	4,575
Acquisitions	274,620	11,394	104,613	55,915
Foreign currency exchange rate changes	(4,667)	34,855	(20,975)	(23,465)
Goodwill ending balance	522,432	255,601	204,777	121,139
Impairments		0	0
Business Technology And Management [Member]
Goodwill [Line Items]
Goodwill beginning balance	22,196	22,196	22,196	22,196
Purchase Accounting Adjustment	0	0
Acquisitions	0	0	0	0
Foreign currency exchange rate changes	0	0	0	0
Goodwill ending balance	$ 22,196	22,196	22,196	$ 22,196
Impairments		$ 0	$ 0