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INTANGIBLE ASSETS (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Segment) (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Indefinite-lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets balances | $ 355,915 | $ 356,138 | $ 358,206
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 | 67,812 | 67,812
Technology And Business |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets balances | 130,403 | 130,626 | 132,694
U.S. Traditional Postsecondary |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets balances | $ 20,200 | $ 20,200 | $ 20,200

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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