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Business And Summary Of Significant Accounting Policies (Schedule Of Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Business And Summary Of Significant Accounting Policies [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 448,870 | $ 275,795 | $ 304,247
Less: Net income attributable to noncontrolling interest |  |  |  |  |  |  |  |  | (50,703) | (45,612) | (43,874)
Less: Net income attributable to unvested restricted share grants |  |  |  |  |  |  |  |  | (521) | (918) | (1,146)
Net income attributable to UHS - basic and diluted |  |  |  |  |  |  |  |  | $ 397,646 | $ 229,265 | $ 259,227
Weighted average number of common shares-basic |  |  |  |  |  |  |  |  | 97,199 | 96,786 | 97,794
Total basic earnings per share | $ 0.99 | $ 0.87 | $ 1.06 | $ 1.17 | $ 0.38 | $ 0.57 | $ 0.68 | $ 0.74 | $ 4.09 | $ 2.37 | $ 2.65
Net effect of dilutive stock options and grants based on the treasury stock method |  |  |  |  |  |  |  |  | 1,338 | 1,187 | 481
Weighted average number of common shares and equivalents-diluted |  |  |  |  |  |  |  |  | 98,537 | 97,973 | 98,275
Total diluted earnings per share | $ 0.98 | $ 0.86 | $ 1.04 | $ 1.15 | $ 0.38 | $ 0.57 | $ 0.67 | $ 0.73 | $ 4.04 | $ 2.34 | $ 2.64

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