Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information (Detail)	1 Months Ended	3 Months Ended			12 Months Ended
	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