Debt Covenant, Mandatory Cash Payment In Excess Of Amount Minimum

No definition available.

Name:	atge_DebtCovenantMandatoryCashPaymentInExcessOfAmountMinimum
Namespace Prefix:	atge_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of principal amount of notes outstanding related to debt covenant.

+ References

No definition available.

+ Details

Name:	atge_DebtCovenantPercentageOfPrincipalAmountOfNotesOutstanding
Namespace Prefix:	atge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt covenant reinvested term, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percent of debt discount.

+ References

No definition available.

+ Details

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Namespace Prefix:	atge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Issuance price of debt instrument as a percent of principal amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	atge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument accruing ticking fees as a percent of margin.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Term debt instrument term ticking fees accrue.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of foreign currency borrowing capacity.

+ References

No definition available.

+ Details

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Namespace Prefix:	atge_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the annual fee percentage on letter of credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	atge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represent the letter of credit annual fee percentage reimbursement.

+ References

No definition available.

+ Details

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Namespace Prefix:	atge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Repayment period for letter of credit, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of letter of credit disbursements.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of notes issued on par value.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 470
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Balance Type:	credit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of the credit facility.

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Balance Type:	credit
Period Type:	duration

- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
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- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- 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

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Balance Type:	na
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

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Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
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Period Type:

Debt (Additional Information) (Detail) - USD ($)					3 Months Ended		9 Months Ended
Debt (Additional Information) (Detail) - USD ($)	Mar. 01, 2021	Feb. 12, 2021	Mar. 24, 2020	Apr. 13, 2018	Mar. 31, 2021	Dec. 31, 2016	Mar. 31, 2021	Dec. 31, 2020	Dec. 04, 2020	Sep. 11, 2020	Jun. 30, 2020	Mar. 31, 2020
Line of Credit Facility [Line Items]
Letters of credit outstanding					$ 68,400,000	$ 68,400,000	$ 68,400,000				$ 68,400,000	$ 68,400,000
Letter Of Credit Title Iv Disbursement Percentage						10.00%
Letter of credit, repayment period						5 years
Commitment fee percentage							0.40%
Credit annual fee percentage reimbursement							2.00%
Annual fee percentage								2.25%
Line of Credit facility, initiation date				Apr. 13, 2018
Outstanding letters of credit					231,600,000		$ 231,600,000
Debt instrument, face amount				$ 300,000,000
Long-term debt					1,070,564,000		1,070,564,000				289,115,000	449,610,000
Increase in line of credit facility				250,000,000
Long-term debt, gross					$ 1,091,750,000		1,091,750,000				294,000,000	454,750,000
Revolver [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 300,000,000
Term					5 years
Line of credit facility, expiration date				Apr. 13, 2023
Foreign currency borrowing capacity				$ 200,000,000
Long-term Line of Credit					$ 0		0				0	160,000,000
Long-term debt, gross					$ 0		0				0	160,000,000
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 100,000,000
New Term Loan
Line of Credit Facility [Line Items]
Term		7 years
Debt Instrument, Issuance Price, Percent Of Principal Amount		99.00%
Debt Instrument, Issuance Discount, Percent		1.00%
Quarterly installment payments		$ 2,125,000
Debt Instrument, Ticking Fee, Term		30 days
Debt Instrument, Ticking Fee, Percent		50.00%
Debt instrument, face amount		$ 850,000,000
Senior Secured Notes Due 2028 And Term B Loan [Member]
Line of Credit Facility [Line Items]
Term					7 years
Senior Secured Notes Due 2028 [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 800,000,000
Long-term debt, gross					$ 800,000,000		800,000,000				0
Fixed interest rate	5.50%
Redemption price percentage	100.00%
Percentage of notes issued on par value	100.00%
Redemption price, percentage of principal amount redeemed	100.00%
Debt covenant, percentage of principal amount of notes outstanding	25.00%
Escrow deposit	$ 800,000,000
Restricted cash	$ 804,300,000
Senior Secured Notes Due 2028 [Member] \| 2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed	102.75%
Senior Secured Notes Due 2028 [Member] \| 2025
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed	101.375%
Senior Secured Notes Due 2028 [Member] \| 2026
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed	100.00%
Senior Secured Notes Due 2028 [Member] \| Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price percentage	105.50%
Term B Loan [Member]
Line of Credit Facility [Line Items]
Debt Covenant, Mandatory Cash Payment In Excess Of Amount Minimum							50,000,000
Long-term debt, gross					$ 291,750,000		$ 291,750,000				$ 294,000,000	$ 294,750,000
Scenario, Plan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount									$ 1,000,000,000
Scenario, Plan [Member] \| New revolver
Line of Credit Facility [Line Items]
Maximum borrowing capacity										$ 400,000,000
Term		5 years
Term B Loan [Member]
Line of Credit Facility [Line Items]
Interest rate for borrowings under the Term B Loan facility					3.11%		3.11%				3.18%	3.99%
Debt instrument, maturity date				Apr. 13, 2025
Principal payment				$ 750,000
Debt covenant reinvested term							1 year
Maximum \| Senior Secured Notes Due 2028 [Member] \| Prior to March 1,2024
Line of Credit Facility [Line Items]
Redemption price, percentage of principal amount redeemed	40.00%
Weighted Average \| Revolver [Member]
Line of Credit Facility [Line Items]
Application rate, percentage												2.86%
Eurocurrency Rate [Member] \| Term B Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis							LIBOR-equivalent rate plus 3%
Basic spread rate			3.00%				3.00%
Eurocurrency Rate [Member] \| Minimum \| Revolver [Member]
Line of Credit Facility [Line Items]
Application rate, percentage							1.75%
Eurocurrency Rate [Member] \| Maximum \| Revolver [Member]
Line of Credit Facility [Line Items]
Application rate, percentage							2.75%
LIBOR Floor [Member] \| New Term Loan
Line of Credit Facility [Line Items]
Basic spread rate		0.75%
Base Rate [Member] \| Term B Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis							base rate plus 2%
Basic spread rate							2.00%
Base Rate [Member] \| Minimum \| Revolver [Member]
Line of Credit Facility [Line Items]
Application rate, percentage					0.75%
Base Rate [Member] \| Maximum \| Revolver [Member]
Line of Credit Facility [Line Items]
Application rate, percentage					1.75%
LIBOR \| New Term Loan
Line of Credit Facility [Line Items]
Basic spread rate		4.50%
Interest Rate Swap \| Term B Loan [Member]
Line of Credit Facility [Line Items]
Derivative, Fixed Interest Rate			0.946%
Derivative, Swaption Interest Rate					3.946%		3.946%
Interest Rate Swap \| LIBOR \| Term B Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis			one-month LIBOR
Interest Rate Swap \| LIBOR \| Minimum \| Term B Loan [Member]
Line of Credit Facility [Line Items]
Derivative, Floor Interest Rate			0.00%