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Nature of Operations (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) segment item | Dec. 31, 2020 USD ($)
Number of reporting segments | segment |  |  | 3 |
Business acquisition and integration expense | $ 9,060 | $ 11,079 | $ 35,613 | $ 24,515
Walden University |  |  |  |
Minimum Number Of Courses Offered | item |  |  | 100 |
Walden University, LLC [Member] |  |  |  |
Business acquisition and integration expense | $ 9,100 | $ 11,100 | $ 35,600 | $ 24,500

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- 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
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Namespace Prefix: | atge_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- 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 http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599 + Details
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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=atge_WaldenUniversitySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |