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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Business integration expense |  | $ 6,909 | $ 0 | $ 12,171
Walden University, LLC |  |  |  |
Business integration expense | $ 0 | $ 6,900 | $ 0 | $ 12,200

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- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=atge_WaldenUniversityLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |