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INTANGIBLE ASSETS - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 04, 2017 | Jun. 28, 2018 | May 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Feb. 05, 2018 | Nov. 01, 2017
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  | $ 9,538,000 | $ 11,169,000 | $ 5,192,000 |  |
Indefinite-lived Intangible Assets, Period Increase (Decrease) |  |  |  |  |  | 18,000,000 |  |  |  |
Goodwill |  |  |  | $ 813,887,000 |  | 813,887,000 | 829,086,000 |  |  |
Intangible Assets, Net (Excluding Goodwill) |  |  |  | $ 362,931,000 |  | $ 362,931,000 | 391,958,000 |  |  |
Percentage Of Intangible Assets Including Goodwill |  |  |  | 50.00% |  | 50.00% |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  |  | $ 20,200,000 | $ 1,600,000 |  |  |  |  |
Goodwill, Impairment Loss |  |  |  |  | $ 22,200,000 |  |  |  |  |
Goodwill, Acquired During Period |  |  |  |  |  | $ 17,163,000 | 274,689,000 |  |  |
Indefinite-lived Intangible Assets (Excluding Goodwill) |  |  |  | 317,950,000 |  | 317,950,000 | 335,938,000 |  |  |
ACAMS [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Impaired Intangible Asset, Method for Fair Value Determination |  |  | The key assumptions used in calculating the fair value of this trade name included a discount rate of 12.2%, a royalty rate of 5% and revenue growth of 13.6% over the forecast period. Assuming all other assumptions remained constant, if the discount rate increased to 14.6% calculated fair value would equal carrying value of this asset at May 31, 2018. Similarly, assuming all other assumptions remained constant, if the royalty rate decreased to 4.6% calculated fair value would equal carrying value at May 31, 2018.
DeVry University [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets | $ 1.00 |  |  |  |  |  |  |  |  |
US Education Holdings LLC [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets |  | $ 1.00 |  |  |  |  |  |  |  |
Indefinite-lived Intangible [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Fair Value In Excess Of Carrying Value Minimum Percentage |  |  | 35.00% |  |  |  |  |  |  |
Minimum Percentage of Premium of Fair Value Due to Increase in Discount Rate |  |  | 22.00% |  |  |  |  |  |  |
Goodwill [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Fair Value In Excess Of Carrying Value Minimum Percentage |  |  | 55.00% |  |  |  |  |  |  |
Minimum Percentage of Premium of Fair Value Due to Increase in Discount Rate |  |  | 41.00% |  |  |  |  |  |  |
Edupristine [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | $ 11,527,000 |
Indefinite-lived Intangible Assets Acquired |  |  |  |  |  | 1,400,000 |  |  |  |
Sao Judas Tadeu [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  | $ 5,636,000
Indefinite-lived Intangible Assets Acquired |  |  |  |  |  | 200,000 |  |  |  |
Professional Education [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  | 6,501,000 | 7,482,000 | 563,000 |  |
Goodwill |  |  |  | 317,699,000 |  | 317,699,000 | 306,653,000 |  |  |
Goodwill, Acquired During Period |  |  |  |  |  | 11,527,000 | 274,689,000 |  |  |
Indefinite-lived Intangible Assets (Excluding Goodwill) |  |  |  | 69,126,000 |  | 69,126,000 | 67,812,000 |  |  |
Technology And Business [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of Intangible Assets |  |  |  |  |  | 3,037,000 | 3,687,000 | $ 4,629,000 |  |
Goodwill, Acquired During Period |  |  |  |  |  | 5,636,000 | 0 |  |  |
Indefinite-lived Intangible Assets (Excluding Goodwill) |  |  |  | 111,324,000 |  | 111,324,000 | 130,626,000 |  |  |
Adtalem Brazil [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | $ 185,978,000 |  | 185,978,000 | $ 212,223,000 |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  |  |  |  | $ 400,000 |  |  |  |
Impaired Intangible Asset, Method for Fair Value Determination |  |  | The key assumptions utilized in calculating the fair value of this reporting unit were a discount rate of 13.9%, revenue growth rate of 10% over the forecast period and a terminal growth rate of 5%. Assuming all other assumptions remained constant the discount rate for Adtalem Brazil would have to increase to 14.8% for the calculated fair value to equal carrying value of this reporting unit at May 31, 2018. Similarly, holding all other assumptions constant the terminal growth rate would have to decrease to 3.7% for calculated fair value to equal carrying value of Adtalem Brazil at May 31, 2018.
Adtalem Brazil [Member] | Indefinite-lived Intangible [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Fair Value In Excess Of Carrying Value Minimum Percentage |  |  | 10.00% |  |  |  |  |  |  |
Adtalem Brazil [Member] | Goodwill [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Fair Value In Excess Of Carrying Value Percentage |  |  | 12.00% |  |  |  |  |  |  |
Association Of Certified Anti-Money Laundering Specialists [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Indefinite-lived Intangible Assets (Excluding Goodwill) |  |  | $ 39.9 |  |  |  |  |  |  |
Association Of Certified Anti-Money Laundering Specialists [Member] | Indefinite-lived Intangible [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Fair Value In Excess Of Carrying Value Minimum Percentage |  |  | 10.00% |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted Average Discount Rate, Percent |  |  | 11.20% |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Minimum [Member] | Indefinite-lived Intangible [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted Average Discount Rate, Percent |  |  | 11.20% |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted Average Discount Rate, Percent |  |  | 13.90% |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Maximum [Member] | Indefinite-lived Intangible [Member] |  |  |  |  |  |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted Average Discount Rate, Percent |  |  | 13.90% |  |  |  |  |  |  |

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