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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 3 (Detail) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Oct. 31, 2024 USD ($) | Mar. 31, 2025 USD ($) Facility | Mar. 31, 2024 USD ($) | Sep. 30, 2023 USD ($) SquareFoot | Mar. 31, 2023 Bed SquareFoot
Related Party Transaction [Line Items] |  |  |  |  |
Lease and rental expense |  | $ 36,813 | $ 35,450 |  |
Relationship with Universal Health Realty Income Trust |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number of free-standing emergency departments to be acquired | Facility |  | 2 |  |  |
Number of square feet to be acquired | SquareFoot |  |  |  | 79,500 |
Percentage of master lease rentable square feet |  |  |  | 100.00% |
Lease and rental expense |  | $ 5,000 | $ 5,000 |  |
Number of square feet to be constructed | SquareFoot |  |  |  |  | 86,000
Number of beds available in acute care hospital | Bed |  |  |  |  | 170
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 |  |  |  |
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 |  |  |  | $ 624,000,000 |
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% |  |  |

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