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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

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

X

- Definition

Minimum number of courses offered.

+ References

No definition available.

+ Details

Name:	atge_MinimumNumberOfCoursesOffered
Namespace Prefix:	atge_
Data Type:	xbrli:integerItemType
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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 http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=atge_WaldenUniversitySegmentMember
Namespace Prefix:
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X

- Details

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