v2.4.0.8
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Jan. 31, 2015
Class A
Jan. 31, 2015
Class B
Jan. 31, 2015
Class C
Jan. 31, 2015
Class D
Document Information [Line Items]            
Document Type 10-K          
Amendment Flag false          
Document Period End Date Dec. 31, 2014          
Document Fiscal Year Focus 2014          
Document Fiscal Period Focus FY          
Trading Symbol UHS          
Entity Registrant Name UNIVERSAL HEALTH SERVICES INC          
Entity Central Index Key 0000352915          
Current Fiscal Year End Date --12-31          
Entity Well-known Seasoned Issuer Yes          
Entity Current Reporting Status Yes          
Entity Voluntary Filers No          
Entity Filer Category Large Accelerated Filer          
Entity Common Stock, Shares Outstanding     6,595,708 91,656,482 664,000 28,111
Entity Public Float   $ 8,700,000,000