Relationship with Universal Health Realty Income Trust and Related Party Transactions - Additional Information (Detail)	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($) Facility	Dec. 31, 2019 USD ($)	Sep. 30, 2019 SquareFoot	Jun. 30, 2019 USD ($)	Dec. 31, 2013	Jun. 30, 2020 USD ($) Hospital Facility SquareFoot Bed Lease	Jun. 30, 2019 USD ($) Hospital	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Net revenues	$ 2,729,754,000			$ 2,855,168,000		$ 5,559,421,000	$ 5,659,559,000
Number of hospital facilities | Hospital						3
Number of third party tenant rentable square feet | SquareFoot						26,000
Number of flex lease commitment rentable square feet | SquareFoot						20,000
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						1,100,000		$ 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
Joint Venture Agreement
Related Party Transaction [Line Items]
Lease initial terms	20 years					20 years
Lease renewal period, years						10 years
Number of beds | Bed						108
Number of triple net lease | Lease						5
Number of square foot to be constructed | SquareFoot						80,000
Expected aggregate fee						$ 750,000
Estimated project cost						37,500,000
Estimated initial annual rent						$ 2,700,000
Expected project to begin and be completed year						2020
Minimum
Related Party Transaction [Line Items]
Lease initial terms	5 years					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					10 years
Maximum | Joint Venture Agreement
Related Party Transaction [Line Items]
Expected project to begin and be completed year						2021
Relationship with Universal Health Realty Income Trust
Related Party Transaction [Line Items]
Trust outstanding shares held, percentage	5.70%					5.70%
Percentage of advisory fee on average invested real estate assets	0.70%			0.70%		0.70%	0.70%	0.70%	0.70%	0.70%
Pre-tax share of income from the Trust	$ 200,000			$ 200,000		$ 500,000	$ 500,000
Dividends received from the Trust	543,000			536,000		1,100,000	1,100,000
Carrying value of investment in Trust	5,900,000	$ 6,400,000				5,900,000		$ 6,400,000
Market value of investment in Trust	$ 62,600,000	92,400,000				$ 62,600,000		$ 92,400,000
Lease initial terms	10 years					10 years
Lease renewal period, years						5 years
Rent expense under operating leases	$ 4,000,000			8,000,000		$ 4,000,000	$ 8,000,000
Notice period on renewal of lease						90 days
Period of rights of refusal to leased facilities						180 days
Number of hospital facilities | Hospital						3	3
Number of free-standing emergency departments to be acquired | Facility	2					2
Number of square feet to be constructed | SquareFoot			75,000
Percentage of master lease rentable square feet						50.00%
Annual Minimum Rent						$ 644,000
Relationship with Universal Health Realty Income Trust | Minimum
Related Party Transaction [Line Items]
Lease initial terms	13 years					13 years
Relationship with Universal Health Realty Income Trust | Minimum | Limited Liability Companies
Related Party Transaction [Line Items]
Non-controlling ownership interests by subsidiaries	95.00%					95.00%
Relationship with Universal Health Realty Income Trust | Maximum
Related Party Transaction [Line Items]
Lease initial terms	15 years					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%					100.00%
Relationship with Universal Health Realty Income Trust | Advisory Fee
Related Party Transaction [Line Items]
Net revenues	$ 1,000,000.0			$ 2,000,000.0		$ 1,000,000.0	$ 2,000,000.0
Premier, Inc. | Other (Income) Expense, Net | ASU 2016-01
Related Party Transaction [Line Items]
Unrealized gain						6,000,000
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		$ 70,000,000				$ 64,000,000