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 ($) Bed SquareFoot	Dec. 31, 2020 USD ($) $ / shares	Sep. 30, 2020 $ / shares	Dec. 31, 2013	Dec. 31, 2021 USD ($) Hospital Facility Bed $ / shares	Dec. 31, 2020 USD ($) Hospital	Dec. 31, 2019 USD ($) Hospital
Related Party Transaction [Line Items]
Net revenues					$ 12,642,117,000	$ 11,558,897,000	$ 11,378,259,000
Lessee, operating lease, existence of option to extend [true false]					true
Lease and rental expense					$ 118,863,000	116,059,000	107,809,000
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	1,100,000	1,100,000
Chief Executive Officer | Trust Owned by CEO
Related Party Transaction [Line Items]
Estimated payments to acquire life insurance policies					9,000,000
Acute Care Hospital Services
Related Party Transaction [Line Items]
Net revenues					7,108,254,000	$ 6,337,304,000	$ 6,164,560,000
Asset Purchase and Sale Agreement | Subsidiaries
Related Party Transaction [Line Items]
Gain on sale of real estate assets					$ 4,000,000.0
Minimum
Related Party Transaction [Line Items]
Lease initial terms					5 years
Real estate leases option to extend lease term					5 years
Minimum | Chief Executive Officer
Related Party Transaction [Line Items]
Estimated death benefit proceeds					$ 37,000,000
Maximum
Related Party Transaction [Line Items]
Lease initial terms					10 years
Real estate leases option to extend lease term					10 years
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%
Pre-tax share of income from the Trust					$ 6,200,000	$ 1,100,000	$ 1,100,000
Dividends received from the Trust					2,200,000	2,200,000	$ 2,100,000
Proceeds from transactions including asset purchase and sale transaction					5,000,000.0
Carrying value of investment in Trust		$ 5,400,000			9,400,000	5,400,000
Market value of investment in Trust		$ 50,600,000			$ 46,800,000	$ 50,600,000
Lease renewal period, years					5 years
Financial liability included in debt					$ 82,400,000
Number of hospital facilities | Hospital					3	3	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
Relationship with Universal Health Realty Income Trust | Subsequent Event
Related Party Transaction [Line Items]
Number of beds available in acute care hospital | Bed	170
Number of square feet to be constructed | SquareFoot	86,000
Percentage of master lease rentable square feet	68.00%
Relationship with Universal Health Realty Income Trust | McAllen Medical Center, Wellington Regional Medical Center and Inland Valley Campus of Southwest Healthcare System
Related Party Transaction [Line Items]
Lease and rental expense					$ 17,700,000	$ 17,100,000	$ 16,400,000
Relationship with Universal Health Realty Income Trust | Aiken, South Carolina | Behavioral Health Care Facility
Related Party Transaction [Line Items]
Number of bed available in behavioral health care facility | Bed					100
Lease and rental expense					$ 2,500,000
Notice period on renewal of lease					270 days
Period of rights of refusal to leased facilities					30 days
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					$ 1,700,000
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
Lease rent receivable					$ 5,600,000
Percentage of annual rental increase on cumulative and compound basis					2.25%
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					2,800,000
Gain on sale of real estate assets					68,400,000
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 | Aiken Regional Medical Center | Aiken South Carolina | Acute Care Hospital Services
Related Party Transaction [Line Items]
Number of beds available in acute care hospital | Bed					211
Relationship with Universal Health Realty Income Trust | Asset Purchase and Sale Agreement | Subsidiaries | Aiken Regional Medical Center | Aiken South Carolina | Behavioral Health Care Facility
Related Party Transaction [Line Items]
Number of bed available in behavioral health care facility | Bed					62
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					$ 24,700,000
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					$ 82,400,000
Relationship with Universal Health Realty Income Trust | Minimum
Related Party Transaction [Line Items]
Lease initial terms					13 years
Relationship with Universal Health Realty Income Trust | Minimum | Subsequent Event
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
Related Party Transaction [Line Items]
Lease initial terms					15 years
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 | Advisory Fee
Related Party Transaction [Line Items]
Net revenues					$ 4,400,000	4,100,000	$ 4,000,000.0
Premier, Inc.
Related Party Transaction [Line Items]
Cash dividend declared per share | $ / shares		$ 0.19	$ 0.19		$ 0.78
Premier, Inc. | Other (Income) Expense, Net
Related Party Transaction [Line Items]
Dividend					$ 1,700,000	800,000
Premier, Inc. | Other (Income) Expense, Net | Accounting Standards Update 2016-01
Related Party Transaction [Line Items]
Unrealized gain (loss)					14,000,000
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					$ 92,000,000	$ 78,000,000