Relationship with UHS and Related Party Transactions - Additional Information (Detail 2) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Fair market value of real estate assets received		$ 83.3	$ 83.6
Subsidiary | Universal Health Services, Inc
Related Party Transaction [Line Items]
Financing receivable		83.3	$ 83.6
Subsidiary | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Cash received for sale of real estate asset	$ 4.1
Gain on sale of real estate assets		$ 68.4		$ 68.4
Subsidiary | Inland Valley Campus of Southwest Healthcare System | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Fair market value of real estate asset sold				79.6
Cash received for sale of real estate asset				4.1
Subsidiary | Aiken Regional Medical Center and Canyon Creek Behavioral Health | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Fair market value of real estate assets received	83.7			83.7
Subsidiary | Wildomar, California | Inland Valley Campus of Southwest Healthcare System | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Fair market value of real estate asset sold	79.6			79.6
Subsidiary | Aiken, South Carolina | Aiken Regional Medical Center | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Fair market value of real estate assets received	57.7			57.7
Subsidiary | Temple, Texas | Canyon Creek Behavioral Health | Asset Purchase and Sale Agreement | Universal Health Services, Inc
Related Party Transaction [Line Items]
Fair market value of real estate assets received	$ 26.0			$ 26.0