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Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information (Detail) | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Jan. 31, 2022 USD ($) Bed SquareFoot | Mar. 31, 2022 USD ($) Facility Hospital Bed | Mar. 31, 2021 USD ($) Hospital | Dec. 31, 2013 | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Net revenues |  | $ 3,292,956,000 | $ 3,012,987,000 |  |  |  |  |
Lease and rental expense |  | $ 32,038,000 | $ 31,324,000 |  |  |  |  |
Number of hospital facilities | Hospital |  | 5 |  |  |  |  |  |
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 |  |  |  |  |  | $ 1,000,000.0 |  |
Chief Executive Officer | Scenario Forecast |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Payments to acquire life insurance policies, net |  |  |  |  | $ 1,000,000.0 |  |  |
Chief Executive Officer | Trust Owned by CEO |  |  |  |  |  |  |  |
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 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Trust outstanding shares held, percentage |  | 5.70% |  |  |  |  |  |
Percentage of advisory fee on average invested real estate assets |  | 0.70% | 0.70% |  |  | 0.70% | 0.70% | 0.70%
Pre-tax share of income from the Trust |  | $ 300,000 | $ 300,000 |  |  |  |  |
Dividends received from the Trust |  | 555,000 | 547,000 |  |  |  |  |
Carrying value of investment in Trust |  | 9,100,000 |  |  |  | $ 9,400,000 |  |
Market value of investment in Trust |  | 46,000,000.0 |  |  |  | 46,800,000 |  |
Financial liability included in debt |  | 83,300,000 |  |  |  |  |  |
Lease and rental expense |  | $ 5,000,000 | $ 4,000,000 |  |  |  |  |
Number of hospital facilities | Hospital |  | 4 | 3 |  |  |  |  |
Notice period on renewal of lease |  | 90 days |  |  |  |  |  |
Period of rights of refusal to leased facilities |  | 180 days |  |  |  |  |  |
Number of free-standing emergency departments to be acquired | Facility |  | 2 |  |  |  |  |  |
Number of square feet to be constructed | SquareFoot | 86,000 |  |  |  |  |  |  |
Number of beds available in acute care hospital | Bed | 170 |  |  |  |  |  |  |
Percentage of master lease rentable square feet | 68.00% |  |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Minimum |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease and rental expense | $ 1,300,000 |  |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Minimum | Limited Liability Companies |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Non-controlling ownership interests by subsidiaries |  | 95.00% |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Maximum | Limited Liability Companies |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Non-controlling ownership interests by subsidiaries |  | 100.00% |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Aiken, South Carolina | Behavioral Health Care Facility |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease and rental expense |  | $ 657,000 | $ 568,000 |  |  |  |  |
Notice period on renewal of lease |  | 270 days |  |  |  |  |  |
Period of rights of refusal to leased facilities |  | 30 days |  |  |  |  |  |
Number of bed available in behavioral health care facility | Bed |  | 100 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Aiken Regional Medical Center |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease rent receivable |  | $ 3,900,000 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Canyon Creek Behavioral Health |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease rent receivable |  | 1,800,000 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Aiken Regional Medical Center and Canyon Creek Behavioral Health |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease rent receivable |  | $ 5,700,000 |  |  |  |  |  |
Number of facilities leased | Facility |  | 2 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Aiken Regional Medical Center and Canyon Creek Behavioral Health | Bonus Rental |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Lease revenue |  | $ 0 |  |  |  |  |  |
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Cash received for sale of real estate asset |  |  |  |  |  | 4,100,000 |  |
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries | Inland Valley Campus of Southwest Healthcare System | Wildomar, California |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Fair market value of real estate assets received |  |  |  |  |  | 79,600,000 |  |
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries | Aiken Regional Medical Center | Aiken South Carolina |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Fair market value of real estate assets sold |  |  |  |  |  | 57,700,000 |  |
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries | Canyon Creek Behavioral Health | Temple, Texas |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Fair market value of real estate assets sold |  |  |  |  |  | 26,000,000.0 |  |
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries | Aiken Regional Medical Center and Canyon Creek Behavioral Health |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Fair market value of real estate assets sold |  |  |  |  |  | 83,700,000 |  |
Relationship with Universal Health Realty Income Trust | Advisory Fee |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Net revenues |  | 1,200,000 | 1,100,000 |  |  |  |  |
Premier, Inc. | Other (Income) Expense, Net |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Dividend |  | 400,000 | $ 400,000 |  |  |  |  |
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 |  | $ 79,000,000 |  |  |  | $ 92,000,000 |  |

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