Relationship with Universal Health Services, Inc. ("UHS") and Related Party Transactions - Additional Information (Detail)		1 Months Ended	3 Months Ended				9 Months Ended		12 Months Ended
		Oct. 31, 2024 Subsidiary Renewaloptions	Sep. 30, 2024 USD ($) Time Lease Hospital	Sep. 30, 2023 USD ($) ft²	Mar. 31, 2023 USD ($) ft²	Mar. 31, 2022 USD ($) Subsidiary	Sep. 30, 2024 USD ($) Time Hospital RenewalOption Lease Bed Property Renewaloptions	Sep. 30, 2023 USD ($) ft²	Dec. 31, 2021 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jan. 31, 2022 ft²
Related Party Transaction [Line Items]
Number of bed facility | Bed							100
Annual advisory fee as percentage of average invested real estate assets			0.70%	0.70%			0.70%	0.70%
McAllen Medical Center
Related Party Transaction [Line Items]
Initial rent				$ 624,000
Rentable square feet | ft²				79,500				79,500
Payment to acquire business				$ 7,600,000
Percentage of lease guaranteed				100.00%
Aiken Regional Medical Center
Related Party Transaction [Line Items]
Monthly lease rent receivable			$ 4,100,000			$ 4,100,000	$ 4,100,000
Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Monthly lease rent receivable			$ 1,800,000			1,800,000	$ 1,800,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Lease expiration date									Dec. 31, 2033
Lease renewal term			5 years				5 years
Monthly lease rent receivable			$ 5,900,000			$ 5,900,000	$ 5,900,000
Lease payments expected			$ 1,400,000	$ 1,400,000			$ 4,100,000	$ 4,100,000
Term of lease									12 years
Number of term renewal options | Time			7				7
Universal Health Services, Inc
Related Party Transaction [Line Items]
Number of acute care hospital leased | Hospital			3				3
Number of behavioral health care hospital leased | Hospital			3				3
Number of hospital facilities leased | Hospital							6
Number of medical office buildings and free standing emergency departments | Property							20
Financing receivable			$ 82,900,000				$ 82,900,000				$ 83,300,000
Lease revenue	[1]		$ 8,248,000	$ 8,274,000			$ 25,366,000	$ 24,297,000
Option to renew lease, notice period prior to termination date of current term							90 days
Number of ground leases | Lease			13				13
Aggregate lease payments for 2024			$ 571,000				$ 571,000
Aggregate lease payments for 2025			571,000				571,000
Aggregate lease payments for 2026			571,000				571,000
Aggregate lease payments for 2027			571,000				571,000
Aggregate lease payments for 2028			$ 571,000				$ 571,000
Aggregate lease payments for thereafter										$ 31,300,000
Percentage ownership of outstanding shares			5.70%				5.70%				5.70%
Percentage of lease guaranteed							52.00%
Universal Health Services, Inc | Minimum
Related Party Transaction [Line Items]
Remaining lease terms on ground leases							25 years
Universal Health Services, Inc | Maximum
Related Party Transaction [Line Items]
Remaining lease terms on ground leases							74 years
Universal Health Services, Inc | Acute Care Hospitals
Related Party Transaction [Line Items]
Number of hospitals operating lease terms of existing and renewal options | Hospital							3
Universal Health Services, Inc | Wellington Regional Medical Center
Related Party Transaction [Line Items]
Percentage of annual rental increase on cumulative and compound basis							2.50%
Renewal options term at fair market value lease rates							5 years
Renewal options at fair market value lease rates expiration year							2031
Number of renewal options at fair market value lease rates | Renewaloptions							1
Universal Health Services, Inc | McAllen Medical Center
Related Party Transaction [Line Items]
Lease expiration date				Aug. 31, 2035
Term of lease				12 years				12 years
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health
Related Party Transaction [Line Items]
Initial lease term on property							20 years
Lessee operating lease, existence of option to extend							true
Percentage of annual rental increase on cumulative and compound basis							2.75%
Option to renew lease, notice period prior to termination date of current term							270 days
Renewal option term							10 years
Operating Lease Additional Number Of Renewal Options At Fair Market Value Lease Rates | RenewalOption							2
Renewal options term at fair market value lease rates							10 years
Period to purchase respective leased facilities prior to end of lease term or renewal terms							270 days
Number of term renewal options | Time			5				5
Number of lease renewal option exercised | Time							3
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health | Minimum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year							2071
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health | Maximum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year							2090
Universal Health Services, Inc | Palm Beach, Florida | Wellington Regional Medical Center
Related Party Transaction [Line Items]
Monthly lease rent receivable									$ 6,600,000
Percentage of annual rental increase on cumulative and compound basis									2.50%
Operating lease renewal term			5 years				5 years
Universal Health Services, Inc | Weslaco and Mission, Texas
Related Party Transaction [Line Items]
Lease expiration date							Jan. 31, 2025
Aggregate annual lease			$ 979,000				$ 979,000
Universal Health Services, Inc | TEXAS
Related Party Transaction [Line Items]
Lease expiration date				Aug. 31, 2035
Universal Health Services, Inc | TEXAS | McAllen Medical Center
Related Party Transaction [Line Items]
Initial rent				$ 624,000
Term of lease				12 years				12 years
Rentable square feet | ft²				79,500				79,500
Payment to acquire business				$ 7,500,000
Percentage of lease				100.00%
Universal Health Services, Inc | Subsidiary
Related Party Transaction [Line Items]
Number of wholly-owned subsidiaries | Subsidiary						2
Financing receivable			82,900,000				82,900,000				$ 83,300,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary
Related Party Transaction [Line Items]
Cash received for sale of real estate asset						$ 4,100,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Inland Valley Campus of Southwest Healthcare System | Wildomar, California
Related Party Transaction [Line Items]
Fair market value of real estate asset sold						79,600,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Aiken Regional Medical Center | Aiken, South Carolina
Related Party Transaction [Line Items]
Fair market value of real estate assets received						57,700,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Canyon Creek Behavioral Health | Temple, Texas
Related Party Transaction [Line Items]
Fair market value of real estate assets received						$ 26,000,000
Universal Health Services, Inc | Ground Lease and Master Flex-lease Agreement | Reno, Nevada | Sierra Medical Plaza I
Related Party Transaction [Line Items]
Cost of medical office building incurred					$ 30,000,000		30,000,000
Rentable square feet | ft²					86,000							86,000
Cost of medical office building					$ 35,000,000		35,000,000
Percentage of rentable square feet					68.00%			68.00%
Universal Health Services, Inc | Ground Lease and Master Flex-lease Agreement | Reno, Nevada | Sierra Medical Plaza I | Minimum
Related Party Transaction [Line Items]
Initial rent					$ 1,300,000			$ 1,300,000
Universal Health Services, Inc | Master Flex Lease Agreement | Reno, Nevada | Sierra Medical Plaza I
Related Party Transaction [Line Items]
Lease expiration date								Mar. 31, 2033
Lease renewal term				10 years				10 years
Term of lease					10 years
Universal Health Services, Inc | Subsequent Event
Related Party Transaction [Line Items]
Number of subsidiaries exercised renewal option | Subsidiary		2
Universal Health Services, Inc | Subsequent Event | Weslaco and Mission, Texas
Related Party Transaction [Line Items]
Percentage of annual rental increase on cumulative and compound basis		2.00%
Renewal options term at fair market value lease rates		5 years
Exercised renewal option term		5 years
Number of renewal options at fair market value lease rates | Renewaloptions		5
Universal Health Services, Inc | Subsequent Event | Weslaco and Mission, Texas | Minimum
Related Party Transaction [Line Items]
Lease expiration date		Feb. 01, 2025
Universal Health Services, Inc | Subsequent Event | Weslaco and Mission, Texas | Maximum
Related Party Transaction [Line Items]
Lease expiration date		Jan. 31, 2030
Universal Health Services, Inc | Subsequent Event | First Three Year Renewal Options | Weslaco and Mission, Texas
Related Party Transaction [Line Items]
Percentage of annual rental increase on cumulative and compound basis		2.00%
Universal Health Services, Inc | Subsequent Event | First Three Year Renewal Options | Weslaco and Mission, Texas | Minimum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year		2030
Universal Health Services, Inc | Subsequent Event | First Three Year Renewal Options | Weslaco and Mission, Texas | Maximum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year		2044
Universal Health Services, Inc | Subsequent Event | Last Two Year Renewal Options | Weslaco and Mission, Texas | Minimum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year		2045
Universal Health Services, Inc | Subsequent Event | Last Two Year Renewal Options | Weslaco and Mission, Texas | Maximum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year		2054
Universal Health Services of Delaware Inc
Related Party Transaction [Line Items]
Advisory fee			1,400,000	$ 1,300,000			4,100,000	$ 4,000,000
Average invested real estate assets			$ 792,000,000	$ 761,000,000			$ 780,000,000	$ 754,000,000
Catholic Health Initiatives Iowa
Related Party Transaction [Line Items]
Percentage of lease guaranteed							48.00%

[1] Includes bonus rental on McAllen Medical Center, a UHS acute care hospital facility of $765 and $725 for the three-month periods ended September 30, 2024 and 2023, respectively, and $2,306 and $2,219 for the nine-month periods ended September 30, 2024 and 2023, respectively.