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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 |  |

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