Existing Lease Terms and Renewal Options for Each of UHS Hospital Facilities (Parenthetical) (Detail) - Universal Health Services Inc	3 Months Ended
	Mar. 31, 2022 Time RenewalOption
McAllen Medical Center
Operating Leased Assets [Line Items]
Number of renewal option at existing lease rate | Time	1
Renewal option term at existing lease rate	5 years
Renewal option at existing lease rate expiration year	2031
Wellington Regional Medical Center
Operating Leased Assets [Line Items]
Number of renewal options at fair market value lease rates	1
Renewal options term at fair market value lease rates	5 years
Renewal options at fair market value lease rates expiration year	2031
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Operating Leased Assets [Line Items]
Number of renewal options at fair market value lease rates	7
Renewal options term at fair market value lease rates	5 years
Aiken Regional Medical Center and Canyon Creek Behavioral Health | Minimum
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2034
Aiken Regional Medical Center and Canyon Creek Behavioral Health | Maximum
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2068
Clive Behavioral Health Hospital
Operating Leased Assets [Line Items]
Number of renewal options at fair market value lease rates	5
Renewal options term at fair market value lease rates	10 years
Clive Behavioral Health Hospital | Minimum | First Three Year Renewal Options
Operating Leased Assets [Line Items]
Renewal options at lease rate stipulated in lease expiration year	2041
Clive Behavioral Health Hospital | Minimum | Last Two Year Renewal Options
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2071
Clive Behavioral Health Hospital | Maximum | First Three Year Renewal Options
Operating Leased Assets [Line Items]
Renewal options at lease rate stipulated in lease expiration year	2070
Clive Behavioral Health Hospital | Maximum | Last Two Year Renewal Options
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2090