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INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill, by Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2017	Mar. 31, 2018	Mar. 31, 2017
Goodwill [Line Items]
Goodwill beginning balance	$ 838,805	$ 829,086	$ 565,811
Purchase Accounting Adjustments	(412)		(3,122)
Acquisitions		16,355	274,620
Foreign exchange rate changes	(9,307)	402	1,496
Goodwill ending balance	829,086	845,843	838,805
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	306,444	306,653	32,043
Purchase Accounting Adjustments	69		0
Acquisitions		12,548	274,620
Foreign exchange rate changes	140	327	(219)
Goodwill ending balance	306,653	319,528	306,444
Technology And Business [Member]
Goodwill [Line Items]
Goodwill beginning balance	222,151	212,223	223,558
Purchase Accounting Adjustments	(481)		(3,122)
Acquisitions		3,807	0
Foreign exchange rate changes	(9,447)	75	1,715
Goodwill ending balance	212,223	216,105	222,151
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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-Publisher FASB
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-Section 50
-Paragraph 1
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-Publisher FASB
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