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Relationship With Universal Health Realty Income Trust And Related Party Transactions (Narrative) (Details) (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Dec. 31, 2011
Revenue, Major Customer [Line Items]      
Previously held minority ownership interest, percentage 100.00%    
Universal Health Services Inc [Member]
      
Revenue, Major Customer [Line Items]      
Previously held minority ownership interest, percentage 100.00%    
Universal Health Realty Income Trust [Member]
      
Revenue, Major Customer [Line Items]      
Trust outstanding shares held, percentage 6.20%    
Advisory fee from the Trust $ 515,000 $ 471,000  
Pre-tax share of income from the Trust 300,000 300,000  
Carrying value of investment in Trust 9,800,000   9,900,000
Market value of investment in Trust 31,200,000   30,700,000
Rent expense under the operating leases 4,100,000 4,100,000  
Previously held minority ownership interest, percentage 100.00%    
Chief Executive Officer [Member]
      
Revenue, Major Customer [Line Items]      
Estimated payments to acquire life insurance policies 25,000,000    
Estimated death benefit proceeds 33,000,000    
Chief Executive Officer [Member] | Trust Owned By Chief Executive Officer [Member]
      
Revenue, Major Customer [Line Items]      
Estimated payments to acquire life insurance policies $ 8,000,000