Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 USD ($) Facility		Dec. 31, 2022 USD ($) Facility	Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Net revenues	$ 14,281,976,000		$ 13,399,370,000	$ 12,642,117,000
Lessee, operating lease, existence of option to extend [true false]	true
Lease and rental	$ 141,026,000		131,626,000	118,863,000
Acute Care Hospital Services
Related Party Transaction [Line Items]
Net revenues	$ 8,081,402,000	[1]	$ 7,646,749,000	$ 7,108,254,000
Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Percentage of advisory fee on average invested real estate assets	0.70%		0.70%	0.70%
Pre-tax share of income from the Trust	$ 874,000		$ 1,200,000	$ 6,200,000
Dividends received from the Trust	2,300,000		2,200,000	2,200,000
Proceeds from transactions including asset purchase and sale transaction				5,000,000.0
Carrying value of investment in Trust	7,000,000.0		8,400,000
Market value of investment in Trust	34,100,000		37,600,000
Lease and rental	$ 20,600,000		20,200,000
Relationship with Universal Health Realty Income Trust | Other Related Party Transactions
Related Party Transaction [Line Items]
Trust outstanding shares held, percentage	5.70%
Relationship with Universal Health Realty Income Trust | Behavioral Health Care Facility
Related Party Transaction [Line Items]
Lease and rental	$ 2,700,000		2,600,000	$ 2,500,000
Relationship with Universal Health Realty Income Trust | Aiken Regional Medical Center
Related Party Transaction [Line Items]
Lease rent receivable	4,000,000		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		$ 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 initial terms				5 years
Initial lease term on property				12 years
Lease expiration date				Dec. 31, 2033
Lessee, operating lease, existence of option to extend [true false]				true
Real estate leases option to extend lease term				7 years
Number of facilities leased | Facility	2		2
Lease rent receivable	$ 5,800,000		$ 5,700,000
Relationship with Universal Health Realty Income Trust | Advisory Fee
Related Party Transaction [Line Items]
Net revenues	$ 5,300,000		$ 5,100,000	$ 4,400,000

[1] Included in our 2022 acute care hospital services operating segment income (loss) before allocation of corporate overhead and income taxes is a pre-tax $58 million provision for asset impairment charge to reduce the carrying value of real property assets.