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Leases - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022
Minimum [Member]
Lessee Lease Description [Line Items]
Lessee operating and finance lease term of contract	5 years
Maximum [Member]
Lessee Lease Description [Line Items]
Lessee operating and finance lease term of contract	30 years
Copiers and Equipment [Member] | Minimum [Member]
Lessee Lease Description [Line Items]
Lessee operating and finance lease term of contract	1 year
Copiers and Equipment [Member] | Maximum [Member]
Lessee Lease Description [Line Items]
Lessee operating and finance lease term of contract	3 years

X

- Definition

Lessee operating and finance lease term of contract.

+ References

No definition available.

+ Details

Name:	achc_LesseeOperatingAndFinanceLeaseTermOfContract
Namespace Prefix:	achc_
Data Type:	xbrli:durationItemType
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_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=achc_CopiersAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: