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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 4 (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Chief Executive Officer |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Estimated payments to acquire life insurance policies |  | $ 28.0 |  |
Payments to acquire life insurance policies, net |  | 1.0 | $ 1.0 | $ 1.0
Trust Owned by CEO | Chief Executive Officer |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Estimated payments to acquire life insurance policies |  | 9.0 |  |
Minimum | Chief Executive Officer |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Estimated death benefit proceeds |  | 37.0 |  |
Premier, Inc. | Group Purchasing Organization Agreement | Restricted Stock |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Shares vesting period | 7 years |  |  |
Shares vesting period start year | 2014 |  |  |
Shares vesting period end year | 2020 |  |  |
Market value of retained vested shares |  | 47.0 | 50.0 |
Other (Income) Expense, Net | Premier, Inc. |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Unrealized gain (loss) |  | (3.0) | (28.0) | (14.0)
Dividend |  | $ 1.9 | $ 1.9 | $ 1.8

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