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Supplemental Condensed Consolidating Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Comprehensive Income (Loss) [Line Items] |  |
Net income | $ 129,935 | $ 142,570
Other comprehensive income (loss): |  |
Unrealized derivative gains on cash flow hedges | 4,535 | 1,615
Amortization of terminated hedge | (84) | (84)
Other comprehensive income before tax | 4,451 | 1,531
Income tax expense related to items of other comprehensive income | 1,678 | 582
Total other comprehensive income, net of tax | 2,773 | 949
Comprehensive income | 132,708 | 143,519
Less: Comprehensive income attributable to noncontrolling interests | 10,151 | 13,963
Comprehensive income attributable to UHS | 122,557 | 129,556
Parent |  |
Comprehensive Income (Loss) [Line Items] |  |
Net income | 119,784 | 128,607
Other comprehensive income (loss): |  |
Unrealized derivative gains on cash flow hedges | 4,535 | 1,615
Amortization of terminated hedge | (84) | (84)
Other comprehensive income before tax | 4,451 | 1,531
Income tax expense related to items of other comprehensive income | 1,678 | 582
Total other comprehensive income, net of tax | 2,773 | 949
Comprehensive income | 122,557 | 129,556
Less: Comprehensive income attributable to noncontrolling interests | 0 | 0
Comprehensive income attributable to UHS | 122,557 | 129,556
Guarantors |  |
Comprehensive Income (Loss) [Line Items] |  |
Net income | 126,236 | 136,182
Other comprehensive income (loss): |  |
Unrealized derivative gains on cash flow hedges | 0 | 0
Amortization of terminated hedge | 0 | 0
Other comprehensive income before tax | 0 | 0
Income tax expense related to items of other comprehensive income | 0 | 0
Total other comprehensive income, net of tax | 0 | 0
Comprehensive income | 126,236 | 136,182
Less: Comprehensive income attributable to noncontrolling interests | 0 | 0
Comprehensive income attributable to UHS | 126,236 | 136,182
Non Guarantors |  |
Comprehensive Income (Loss) [Line Items] |  |
Net income | 58,902 | 75,336
Other comprehensive income (loss): |  |
Unrealized derivative gains on cash flow hedges | 0 | 0
Amortization of terminated hedge | 0 | 0
Other comprehensive income before tax | 0 | 0
Income tax expense related to items of other comprehensive income | 0 | 0
Total other comprehensive income, net of tax | 0 | 0
Comprehensive income | 58,902 | 75,336
Less: Comprehensive income attributable to noncontrolling interests | 10,151 | 13,963
Comprehensive income attributable to UHS | 48,751 | 61,373
Consolidating Adjustments |  |
Comprehensive Income (Loss) [Line Items] |  |
Net income | (174,987) | (197,555)
Other comprehensive income (loss): |  |
Unrealized derivative gains on cash flow hedges | 0 | 0
Amortization of terminated hedge | 0 | 0
Other comprehensive income before tax | 0 | 0
Income tax expense related to items of other comprehensive income | 0 | 0
Total other comprehensive income, net of tax | 0 | 0
Comprehensive income | (174,987) | (197,555)
Less: Comprehensive income attributable to noncontrolling interests | 0 | 0
Comprehensive income attributable to UHS | $ (174,987) | $ (197,555)

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