XML 77 R68.htm IDEA: XBRL DOCUMENT
v3.10.0.1

INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Effective Income Tax Rate Reconciliation, Percent | 20.00% | 202.00% | 19.10% | 141.20%
Effective Income Tax Rate Continuing Operations Excluding Special Items | 17.70% | 15.60% | 16.50% | 15.00%
Tax Expenses Special Items |  |  | $ 101.2 |

X
- Definition The percentage of effective income tax rate continuing operations special items. + References No definition available. + Details
Name: | atge_EffectiveIncomeTaxRateContinuingOperationsExcludingSpecialItems
Namespace Prefix: | atge_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represent the tax expenses special items. + References No definition available. + Details
Name: | atge_TaxExpensesSpecialItems
Namespace Prefix: | atge_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_IncomeTaxContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration