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Uncompensated Care (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Health Care Trust Fund [Line Items] |  |  |
Uncompensated care | $ 998,770 | $ 1,045,572 | $ 955,748
Uncompensated care, percentage | 100.00% | 100.00% | 100.00%
Charity Care |  |  |
Health Care Trust Fund [Line Items] |  |  |
Uncompensated care | 593,474 | 778,268 | 804,301
Uncompensated care, percentage | 59.00% | 74.00% | 84.00%
Uninsured Discounts |  |  |
Health Care Trust Fund [Line Items] |  |  |
Uncompensated care | $ 405,296 | $ 267,304 | $ 151,447
Uncompensated care, percentage | 41.00% | 26.00% | 16.00%

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- Definition Percentage of Uncompensated Care + References No definition available. + Details
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Period Type: | duration

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- Definition Uncompensated Care + References No definition available. + Details
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Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
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- Details
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Period Type: | duration