Lease Accounting - Additional Information (Detail)	3 Months Ended			6 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($) Land Lease	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Leases Disclosure [Line Items]
Lessee in connection with ground leases for land | Land	15
Right-of-use land assets	$ 10,939,000					$ 10,946,000
Ground lease liabilities	10,939,000					10,946,000
Specialty Hospital In Chicago, Illinois | Chicago, Illinois
Leases Disclosure [Line Items]
Lease Demolition Cost						1,500,000
Other operating expenses demolition costs			$ 332,000	$ 1,100,000
Operating expenses demolition costs	95,000	$ 417,000
Operating expenses excluding demolition	152,000	265,000
Specialty Facility Evansville Indiana | Evansville, Indiana
Leases Disclosure [Line Items]
Operating expenses excluding depreciation and amortization expense	83,000	103,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Leases Disclosure [Line Items]
Monthly lease rent receivable	5,900,000						$ 5,900,000
Lease payments expected	1,400,000	$ 1,400,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health | Forecast
Leases Disclosure [Line Items]
Lease payments expected					$ 5,400,000
Aiken Regional Medical Center
Leases Disclosure [Line Items]
Monthly lease rent receivable	4,100,000						4,100,000
Canyon Creek Behavioral Health
Leases Disclosure [Line Items]
Monthly lease rent receivable	1,800,000						$ 1,800,000
Universal Health Services, Inc
Leases Disclosure [Line Items]
Financing receivable	83,200,000					83,300,000
Universal Health Services, Inc | Wellington Regional Medical Center | Palm Beach, Florida
Leases Disclosure [Line Items]
Monthly lease rent receivable								$ 6,600,000
Universal Health Services, Inc | Subsidiary
Leases Disclosure [Line Items]
Financing receivable	$ 83,200,000					$ 83,300,000
Financing Arrangements
Leases Disclosure [Line Items]
Number of lease property | Lease	2