Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 3 (Detail)	1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2024 USD ($)	Sep. 30, 2023 USD ($) SquareFoot	Mar. 31, 2023 SquareFoot Bed	Dec. 31, 2024 USD ($) Facility	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Related Party Transaction [Line Items]
Lease and rental expense				$ 146,433,000	$ 141,026,000	$ 131,626,000
Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Number of free-standing emergency departments to be acquired | Facility				2
Lease and rental expense				$ 21,200,000	$ 20,600,000
Number of square feet to be acquired | SquareFoot		79,500
Percentage of master lease rentable square feet		100.00%
Number of beds available in acute care hospital | Bed			170
Number of square feet to be constructed | SquareFoot			86,000
Two Free-standing Emergency Departments
Related Party Transaction [Line Items]
Renewal options term at fair market lease rates	5 years
Lease expiration date	Jan. 31, 2025
Lease and rental expense	$ 1,070,000.00
Percentage of annual rental increase on cumulative and compound basis	2.00%
Two Free-standing Emergency Departments | First Three Renewal Options
Related Party Transaction [Line Items]
Percentage of annual rental increase on cumulative and compound basis				2.00%
Minimum | Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Lease and rental expense		$ 624,000
Minimum | Two Free-standing Emergency Departments
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration date	Feb. 01, 2025
Minimum | Two Free-standing Emergency Departments | First Three Renewal Options
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration year				2030
Minimum | Two Free-standing Emergency Departments | Remaining Two Renewal Options
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration year				2045
Maximum | Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Percentage of master lease rentable square feet			68.00%
Maximum | Two Free-standing Emergency Departments
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration date	Jan. 31, 2030
Maximum | Two Free-standing Emergency Departments | First Three Renewal Options
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration year				2044
Maximum | Two Free-standing Emergency Departments | Remaining Two Renewal Options
Related Party Transaction [Line Items]
Operating leases additional renewal options at fair market value lease rates expiration year				2054
Limited Liability Companies | Minimum | Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Non-controlling ownership interests				95.00%
Limited Liability Companies | Maximum | Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Non-controlling ownership interests				100.00%