Relationship with Universal Health Realty Income Trust and Other Related Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Net revenues	$ 15,827,935,000	$ 14,281,976,000	$ 13,399,370,000
Lessee, operating lease, existence of option to extend [true false]	true
Lease and rental	$ 146,433,000	$ 141,026,000	$ 131,626,000
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	$ 1,100,000	$ 874,000	$ 1,200,000
Dividends received from the Trust	2,300,000	2,300,000	2,200,000
Carrying value of investment in Trust	5,800,000	7,000,000
Market value of investment in Trust	29,300,000	34,100,000
Lease and rental	$ 21,200,000	20,600,000
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 | Advisory Fee
Related Party Transaction [Line Items]
Net revenues	$ 5,500,000	$ 5,300,000	$ 5,100,000