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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017 | Jun. 30, 2017
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Reserves related to uncollectible accounts and refunds | $ 36,200 | $ 33,400 | $ 36,200 | $ 33,400 | $ 30,600
Net balance of capitalized software development costs | $ 3,400 | $ 6,800 | $ 3,400 | $ 6,800 | 5,900
Anti-dilutive shares excluded from computations of earnings per share | 294,000 | 1,670,000 | 1,273,000 | 2,514,000 |
Cumulative translation losses | $ 59,500 | $ 37,300 | $ 59,500 | $ 37,300 | 59,400
Advertising expense | 27,500 | 25,300 | 76,500 | 73,700 |
Provisions For Refund Payments | 4,800 | 4,000 | 13,900 | 12,200 |
Impairment of Long-Lived Assets Held-for-use |  |  | 29,900 |  |
Cost of Goods and Services Sold, Total | 179,736 | 182,216 | 554,647 | 548,850 |
Insurance Settlements Receivable | 20,800 |  | 20,800 |  |
Loss from Catastrophes | 11,100 |  | 55,100 |  |
Unusual or Infrequent Item, or Both, Insurance Proceeds | 11,100 |  | 50,900 |  |
Discontinued Operations, Held-for-sale [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 5,700 |  | 29,100 |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cumulative Effect on Retained Earnings, Tax |  |  | 200 |  |
Cumulative Effect on Retained Earnings, before Tax |  |  | 600 |  |
Noncontrolling Interest |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cumulative translation losses | 1,300 | 800 | 1,300 | 800 | 1,300
Educational Services |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Provision for Doubtful Accounts | 6,700 | 7,800 | 17,900 | 19,700 |
Hurricane Expense [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 29,900 |  |  |  |
Cost of Goods and Services Sold, Total |  |  | $ 13,400 |  |
Minimum |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 20.00% |  | 20.00% |  |
Maximum |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
Adtalem Brazil |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest of parent in subsidiary | 97.90% |  | 97.90% |  |
Adtalem Global Education Inc. |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cumulative translation losses | $ 58,200 | 36,500 | $ 58,200 | 36,500 | 58,100
Tax effect on unrealized gains on available-for-sale securities | 300 | 300 | 300 | 300 | 300
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax | $ 200 | $ 200 | $ 200 | $ 200 | $ 200
Edupristine |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest of parent in subsidiary | 69.00% |  | 69.00% |  |
Kaizen |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest of parent in subsidiary | 31.00% |  | 31.00% |  |
Adtalem Brazil Senior Management Group |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Ownership interest of parent in subsidiary | 2.10% |  | 2.10% |  |

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