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INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill, by Segment) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill beginning balance	$ 829,086	$ 832,642	$ 565,811
Purchase Accounting Adjustments		(412)	(3,122)
Acquisitions	4,121		274,620
Foreign exchange rate changes	(264)	(3,144)	(4,667)
Goodwill ending balance	832,943	829,086	832,642
Medical And Healthcare [Member]
Goodwill [Line Items]
Goodwill beginning balance	310,210	310,210	310,210
Purchase Accounting Adjustments		0	0
Acquisitions	0		0
Foreign exchange rate changes	0	0	0
Goodwill ending balance	310,210	310,210	310,210
Professional Education [Member]
Goodwill [Line Items]
Goodwill beginning balance	306,653	306,382	32,043
Purchase Accounting Adjustments		69	0
Acquisitions	0		274,620
Foreign exchange rate changes	155	202	(281)
Goodwill ending balance	306,808	306,653	306,382
Technology And Business [Member]
Goodwill [Line Items]
Goodwill beginning balance	212,223	216,050	223,558
Purchase Accounting Adjustments		(481)	(3,122)
Acquisitions	4,121		0
Foreign exchange rate changes	(419)	(3,346)	(4,386)
Goodwill ending balance	215,925	212,223	216,050
U.S. Traditional Postsecondary [Member]
Goodwill [Line Items]
Acquisitions			0
Goodwill beginning balance	185,717	185,717	185,717
Purchase Accounting Adjustments		0	0
Acquisitions	0		0
Impairments	0
Foreign exchange rate changes	0	0	0
Goodwill ending balance	185,717	185,717	185,717
Accumulated Impairment Losses beginning balance	(185,717)	(185,717)	(185,717)
Purchase Accounting Adjustments		0	0
Foreign exchange rate changes	0	0	0
Accumulated Impairment Losses ending balance	$ (185,717)	$ (185,717)	$ (185,717)

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