Additional relief received amount from U.S. government for eligible healthcare providers under the CARES Act.

No definition available.

Name:	achc_AdditionalReliefReceived
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Additional relief to eligible health care providers.

+ References

No definition available.

+ Details

Name:	achc_AdditionalReliefToEligibleHealthCareProviders
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of advance payment received under the CARES Act.

+ References

No definition available.

+ Details

Name:	achc_AmountOfAdvancePaymentReceived
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

CARES Act.

+ References

No definition available.

+ Details

Name:	achc_CARESActLineItems
Namespace Prefix:	achc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Cash benefit relating to delay of payment of social security payroll taxes.

+ References

No definition available.

+ Details

Name:	achc_CashBenefitRelatingToDelayOfPaymentOfSocialSecurityPayrollTaxes
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Contract with customer liability advance repayments.

+ References

No definition available.

+ Details

Name:	achc_ContractWithCustomerLiabilityAdvanceRepayments
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Expected repay of payroll tax deferrals.

+ References

No definition available.

+ Details

Name:	achc_ExpectedRepayOfPayrollTaxDeferrals
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of income from provider relief funds granted as part of the CARES Act.

+ References

No definition available.

+ Details

Name:	achc_IncomeFromProviderReliefFund
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Received relief amount from U.S. government for eligible healthcare providers under the CARES Act.

+ References

No definition available.

+ Details

Name:	achc_InitialReliefReceived
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of decrease in Medicare reimbursement rate.

+ References

No definition available.

+ Details

Name:	achc_PercentageOfDecreaseInMedicareReimbursementRate
Namespace Prefix:	achc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of increase in medicare reimbursement rate.

+ References

No definition available.

+ Details

Name:	achc_PercentageOfIncreaseInMedicareReimbursementRate
Namespace Prefix:	achc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Remaining unrecognized provider relief funds.

+ References

No definition available.

+ Details

Name:	achc_RemainingUnrecognizedProviderReliefFunds
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The U.S. government offer of relief to eligible healthcare providers as part of the CARES Act.

+ References

No definition available.

+ Details

Name:	achc_TotalReliefToEligibleHealthcareProviders
Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_UnusualOrInfrequentItemAxis=achc_CoronavirusAidReliefAndEconomicSecurityActMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=achc_MedicareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=achc_PublicHealthAndSocialServicesEmergencyFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=achc_AmericanRescuePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=achc_CentersForMedicareAndMedicaidServicesCARESActAcceleratedAndAdvancePaymentProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

The CARES Act - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Apr. 24, 2020	Jun. 30, 2022	Sep. 30, 2021	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CARES Act [Line Items]
Income from relief fund		$ 8,550			$ 8,550			$ 32,800
Expected repay of payroll tax deferrals			$ 39,300
CARES Act [Member]
CARES Act [Line Items]
Offer of eligible relief amount				$ 100,000,000
Additional offer of eligible relief amount	$ 75,000,000
Cash benefit relating to delay of payment of social security payroll taxes				39,300
Remaining unrecognized provider relief funds				$ 9,000		$ 9,000
CARES Act [Member] \| Medicare [Member]
CARES Act [Line Items]
Repayment of advanced payments							$ 25,100
Percentage of increase in medicare reimbursement rate								2.00%
Percentage of reduced in medicare reimbursement rate				1.00%
CARES Act [Member] \| Public Health and Social Services Emergency Fund [Member]
CARES Act [Line Items]
Receipt of CARES Act of 2020 aid amount								$ 34,900
Income from relief fund						21,500	17,900
Receipt of additional CARES Act of 2020 aid amount						7,700	$ 24,200
CARES Act [Member] \| Public Health and Social Services Emergency Fund [Member] \| American Rescue Plan
CARES Act [Line Items]
Receipt of additional CARES Act of 2020 aid amount						14,200
CARES Act [Member] \| CMS' Accelerated and Advance Payment Program [Member]
CARES Act [Line Items]
Repayment of advanced payments						$ 20,100
CARES Act [Member] \| CMS' Accelerated and Advance Payment Program [Member] \| Medicare [Member]
CARES Act [Line Items]
Amount of advance payment received								$ 45,200