Existing Lease Terms and Renewal Options for Each of UHS Hospital Facilities (Parenthetical) (Detail) - Universal Health Services, Inc	3 Months Ended
	Mar. 31, 2016 Time RenewalOption
Operating Leased Assets [Line Items]
Number of renewal options at existing lease rates | Time	3
McAllen Medical Center
Operating Leased Assets [Line Items]
Number of renewal options at existing lease rates | Time	3
Renewal options term at existing lease rates	5 years
Renewal options at existing lease rates expiration year	2031
Wellington Regional Medical Center And Southwest Healthcare System
Operating Leased Assets [Line Items]
Number of renewal options at existing lease rates | RenewalOption	1
Renewal options term at existing lease rates	5 years
Renewal options at existing lease rates expiration year	2021
Number of renewal options at fair market value lease rates | RenewalOption	2
Renewal options term at fair market value lease rates	5 years
Wellington Regional Medical Center And Southwest Healthcare System | Minimum
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2022
Wellington Regional Medical Center And Southwest Healthcare System | Maximum
Operating Leased Assets [Line Items]
Renewal options at fair market value lease rates expiration year	2031