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INTERIM FINANCIAL STATEMENTS - Additional Information (Detail) | Dec. 31, 2018
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Adtalem Brazil [Member] |
Noncontrolling Interest, Ownership Percentage by Parent | 97.90%
Edupristine [Member] |
Noncontrolling Interest, Ownership Percentage by Parent | 69.00%

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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
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | srt_OwnershipAxis=atge_EdupristineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |