v3.26.1
Segment Reporting (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Net revenues $ 4,638,012 $ 4,283,816 $ 9,133,194 $ 8,383,536  
Total assets 15,935,486   15,935,486   $ 15,527,593
Behavioral Health Services          
Segment Reporting Information [Line Items]          
Net revenues 2,025,065 1,877,273 3,907,217 3,616,337  
Behavioral Health Services | Located in U.K.          
Segment Reporting Information [Line Items]          
Net revenues $ 269,000 $ 247,000 $ 530,000 $ 474,000