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Summary of Significant Accounting Policies (Additional Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jul. 01, 2019
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Revenue practical expedient remaining performance obligation applied |  |  | true |  |  |
Horizon Term |  |  | 5 years |  |  |
Property, Plant and Equipment, Gross |  |  | $ 648,331 | $ 617,122 |  |
Settlement gains |  |  | $ 0 | 0 | $ 26,178 |
Employee Stock Purchase Plan, Percent Of Base Earnings |  |  | 10.00% |  |  |
Advertising expense |  |  | $ 92,900 | 82,600 | 72,000 |
Gain on Business Interruption Insurance Recovery |  |  | 0 | 0 | 15,571 |
Proceeds from Insurance Settlement, Investing Activities |  |  | 0 | 0 | 35,706 |
Gain on lawsuit settlement | $ 10,600 |  |  |  |  |
Gain on Business Interruption Insurance Recovery |  |  | 0 | 0 | 15,571 |
Operating lease assets |  |  | 168,943 | 174,935 |  |
American University Of The Caribbean And Ross University [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Gain on Business Interruption Insurance Recovery |  | $ 15,600 |  |  |  |
Gain on Business Interruption Insurance Recovery |  | $ 15,600 |  |  |  |
Hurricane [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Hurricane expense |  |  | $ 0 | $ 0 | 0 |
Loss from catastrophes |  |  |  |  | 12,500 |
Unusual or Infrequent Item, or Both, Insurance Proceeds |  |  |  |  | 12,500 |
Gain on Business Interruption Insurance Recovery |  |  |  |  | 15,600 |
Gain on Business Interruption Insurance Recovery |  |  |  |  | $ 15,600 |
Minimum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Finite live intangible assets amortization period |  |  | 5 years |  |  |
Maximum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Finite live intangible assets amortization period |  |  | 10 years |  |  |
Building and Building Improvements [Member] | Minimum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful life of assets |  |  | 5 years |  |  |
Building and Building Improvements [Member] | Maximum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful life of assets |  |  | 40 years |  |  |
Furniture and Fixtures [Member] | Minimum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful life of assets |  |  | 3 years |  |  |
Furniture and Fixtures [Member] | Maximum |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Useful life of assets |  |  | 8 years |  |  |
Adtalem Brazil [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Ownership interest of parent in subsidiary | 97.90% |  |  |  | 97.90% | 100.00%
Edupristine [Member] |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Ownership interest of parent in subsidiary |  |  | 71.00% |  |  |

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