v2.4.0.6
Document And Entity Information (USD $)
In Billions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Jun. 30, 2011
Jan. 31, 2012
Class A Common [Member]
Jan. 31, 2012
Class B Common [Member]
Jan. 31, 2012
Class C Common [Member]
Jan. 31, 2012
Class D Common [Member]
Document Type 10-K          
Amendment Flag false          
Document Period End Date Dec. 31, 2011          
Document Fiscal Period Focus FY          
Document Fiscal Year Focus 2011          
Trading Symbol uhs          
Entity Registrant Name UNIVERSAL HEALTH SERVICES INC          
Entity Central Index Key 0000352915          
Current Fiscal Year End Date --12-31          
Entity Filer Category Large Accelerated Filer          
Entity Common Stock, Shares Outstanding     6,625,708 89,408,941 664,000 33,084
Entity Well-known Seasoned Issuer Yes          
Entity Public Float   $ 4.61        
Entity Current Reporting Status Yes          
Entity Voluntary Filers No