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

X

- 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

X

- Details

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

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=atge_EdupristineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: