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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 3 (Detail) | 3 Months Ended
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Mar. 31, 2024 USD ($) Facility | Sep. 30, 2023 USD ($) SquareFoot | Mar. 31, 2023 USD ($) Bed SquareFoot
Related Party Transaction [Line Items] |  |  |
Lease and rental expense | $ 35,450,000 |  | $ 34,922,000
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% | 68.00%
Lease and rental expense | $ 5,000,000 |  | $ 5,000,000
Number of square feet to be constructed | SquareFoot |  |  | 86,000
Number of beds available in acute care hospital | Bed |  |  | 170
Minimum | Relationship with Universal Health Realty Income Trust |  |  |
Related Party Transaction [Line Items] |  |  |
Lease and rental expense |  | $ 624,000 | $ 1,300,000
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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