The amount of debt service reserve fund requirements included in other assets on the consolidated balance sheets.

No definition available.

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Namespace Prefix:	achc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

+ Details

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Period Type:	instant

- 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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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

- Details

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- Details

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- Details

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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=achc_NinePointZeroPercentRevenueBondsMember
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Long-Term Debt (9.0% and 9.5% Revenue Bonds) - Additional Information (Detail) - USD ($) $ in Thousands	Nov. 11, 2012	Jun. 30, 2016	Dec. 31, 2015
9.0% and 9.5% Revenue Bonds [Member]
Debt Instrument [Line Items]
9.0% and 9.5% Revenue Bonds		$ 22,410	$ 22,410
9.0% and 9.5% Revenue Bonds [Member] \| Park Royal [Member]
Debt Instrument [Line Items]
9.0% and 9.5% Revenue Bonds	$ 23,000
Debt service reserve fund within other assets		$ 2,300	$ 2,300
Debt instrument premium	2,600
9.0% and 9.5% Revenue Bonds [Member] \| Fair Value Measurement [Member] \| Park Royal [Member]
Debt Instrument [Line Items]
9.0% and 9.5% Revenue Bonds	25,600
9.0% Revenue Bonds [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		9.00%	9.00%
9.0% Revenue Bonds [Member] \| Park Royal [Member]
Debt Instrument [Line Items]
9.0% and 9.5% Revenue Bonds	$ 7,500
Debt instrument interest rate	9.00%
Debt instrument maturity date	Dec. 01, 2030
9.5% Revenue Bonds [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		9.50%	9.50%
9.5% Revenue Bonds [Member] \| Park Royal [Member]
Debt Instrument [Line Items]
9.0% and 9.5% Revenue Bonds	$ 15,500
Debt instrument interest rate	9.50%
Debt instrument maturity date	Dec. 01, 2040