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Acquisitions - Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 2,222,805 | $ 2,199,937 | $ 2,105,264
CenterPointe Behavioral Health System, LLC [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Cash |  | 5,640 |
Accounts receivable, net |  | 9,358 |
Other current assets |  | 1,981 |
Property and equipment |  | 35,227 |
Goodwill |  | 105,883 |
Intangible assets |  | 825 |
Deferred tax assets |  | 1,573 |
Operating lease right-of-use assets |  | 29,245 |
Total assets acquired |  | 189,732 |
Accounts payable |  | 3,820 |
Accrued salaries and benefits |  | 3,585 |
Current portion of operating lease liabilities |  | 2,820 |
Other accrued liabilities |  | 4,326 |
Deferred tax liability |  | 1,805 |
Operating lease liabilities |  | 27,850 |
Total liabilities assumed |  | 44,206 |
Net assets acquired |  | $ 145,526 |

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