XML 105 R92.htm IDEA: XBRL DOCUMENT
v3.25.4

Transaction, Legal and Other Costs - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Transaction Legal And Other Costs [Line Items] |  |  |
Legal, accounting and other acquisition-related costs | $ 8,500 | $ 11,172 | $ 12,705
New Facilities Development [Member] |  |  |
Transaction Legal And Other Costs [Line Items] |  |  |
Legal, accounting and other acquisition-related costs | 2,100 | 5,000 | 2,900
Cost Related to Certain Litigation [Member] |  |  |
Transaction Legal And Other Costs [Line Items] |  |  |
Legal, accounting and other acquisition-related costs | 6,300 | 4,800 | 8,800
Direct Costs Associated with Acquisitions [Member] |  |  |
Transaction Legal And Other Costs [Line Items] |  |  |
Legal, accounting and other acquisition-related costs | $ 100 | $ 1,400 | $ 1,000

X
- Definition Amount of expenses for legal, accounting and other fees associated with a business acquisition. + References No definition available. + Details
Name: | achc_LegalAccountingAndOtherAcquisitionRelatedCosts
Namespace Prefix: | achc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transaction Legal And Other Costs. + References No definition available. + Details
Name: | achc_TransactionLegalAndOtherCostsLineItems
Namespace Prefix: | achc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_NonrecurringAdjustmentAxis=achc_NewFacilitiesDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NonrecurringAdjustmentAxis=achc_CostRelatedToCertainLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NonrecurringAdjustmentAxis=us-gaap_AcquisitionRelatedCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |