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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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