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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information 4 (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2013 | Dec. 31, 2025 | Dec. 31, 2014
Chief Executive Officer |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Estimated payments to acquire life insurance policies | $ 28,000,000 |  |  |  |
Payments to acquire life insurance policies, net |  |  |  |  | $ 1,000,000
Trust Owned by CEO | Chief Executive Officer |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Estimated payments to acquire life insurance policies | 9,000,000 |  |  |  |
Minimum | Chief Executive Officer |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Estimated death benefit proceeds | 37,000,000 |  |  |  |
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 | 43,000,000 |  |  |  | $ 47,000,000
Other (Income) Expense, Net | Premier, Inc. |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Unrealized gain (loss) | (4,300,000) | $ (600,000) |  |  |
Dividend | $ 469,000 | $ 469,000 |  |  |
Scenario Forecast | Chief Executive Officer |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Payments to acquire life insurance policies, net |  |  |  | $ 1,000,000 |

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