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INTANGIBLE ASSETS (Summary of Goodwill Balances by Reporting Segment) (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Intangible Assets [Line Items] |  |  |
Goodwill | $ 854,838 | $ 588,007 | $ 542,994
Medical And Healthcare [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Goodwill | 310,210 | 310,210 | 316,021
International And Professional Education [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Goodwill | 522,432 | 255,601 | 204,777
Business Technology And Management [Member] |  |  |
Intangible Assets [Line Items] |  |  |
Goodwill | $ 22,196 | $ 22,196 | $ 22,196

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