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INTERIM FINANCIAL STATEMENTS - Additional Information (Detail) | Sep. 30, 2017
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Adtalem Brazil [Member] |
Noncontrolling Interest, Ownership Percentage by Parent | 97.90%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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