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Nature of Operations (Details) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2022 USD ($) item segment | Sep. 30, 2021 USD ($)
Number of reportable segments | segment | 3 |
Business acquisition and integration expense | $ 8,415 | $ 26,553
Walden University |  |
Minimum number of courses offered | item | 100 |
Walden University, LLC |  |
Business acquisition and integration expense | $ 8,400 | $ 26,600

X
- Definition This element represents acquisition-related costs and integration-related costs incurred to effect a business combination which costs have been expensed during the period. + References No definition available. + Details
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Namespace Prefix: | atge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Minimum number of courses offered. + References No definition available. + Details
Name: | atge_MinimumNumberOfCoursesOffered
Namespace Prefix: | atge_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=atge_WaldenUniversitySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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