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Redeemable Noncontrolling Interest (Additional Information) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 26, 2020 | Jul. 01, 2019 | Jun. 30, 2019
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |
Decrease in noncontrolling interest | $ 0 | $ 0 |  | $ 0 | $ 6,247 |  |  |
Adtalem Brazil [Member] |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |
Ownership interest of parent in subsidiary |  |  |  |  |  |  | 100.00% | 97.90%
Decrease in noncontrolling interest |  |  | $ 6,200 |  |  |  |  |
Edupristine [Member] |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |
Ownership interest of parent in subsidiary | 71.00% |  |  | 71.00% |  |  |  |
Ownership percentage held by minority available for purchase |  |  |  |  |  | 33.00% |  |
Adtalem Brazil Senior Management Group [Member] | Adtalem Brazil [Member] |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  | 2.10%
Kaizen [Member] | Edupristine [Member] |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 29.00% |  |  | 29.00% |  |  |  |

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