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v2.4.1.9

Supplemental Condensed Consolidating Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Condensed Statement of Income Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income | $ 190,492 us-gaap_ProfitLoss | $ 96,038 us-gaap_ProfitLoss | $ 166,614 us-gaap_ProfitLoss | $ 151,852 us-gaap_ProfitLoss | $ 133,186 us-gaap_ProfitLoss | $ 123,099 us-gaap_ProfitLoss | $ 167,803 us-gaap_ProfitLoss | $ 129,935 us-gaap_ProfitLoss | $ 604,996 us-gaap_ProfitLoss | $ 554,023 us-gaap_ProfitLoss | $ 489,047 us-gaap_ProfitLoss
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized derivative gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  | 17,668 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax | 16,963 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax | 6,677 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
Amortization of terminated hedge |  |  |  |  |  |  |  |  | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax
Minimum pension liability |  |  |  |  |  |  |  |  | (14,270)uhs_MinimumPensionLiabilityAccrualNetOfTax | 14,657 uhs_MinimumPensionLiabilityAccrualNetOfTax | 4,986 uhs_MinimumPensionLiabilityAccrualNetOfTax
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | (2,431)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  | 631 us-gaap_OtherComprehensiveIncomeLossBeforeTax | 31,284 us-gaap_OtherComprehensiveIncomeLossBeforeTax | 11,327 us-gaap_OtherComprehensiveIncomeLossBeforeTax
Income tax (benefit) expense related to items of other comprehensive income |  |  |  |  |  |  |  |  | 1,053 us-gaap_OtherComprehensiveIncomeLossTax | 11,940 us-gaap_OtherComprehensiveIncomeLossTax | 4,306 us-gaap_OtherComprehensiveIncomeLossTax
Total other comprehensive income, net of tax |  |  |  |  |  |  |  |  | (422)us-gaap_OtherComprehensiveIncomeLossNetOfTax | 19,344 us-gaap_OtherComprehensiveIncomeLossNetOfTax | 7,021 us-gaap_OtherComprehensiveIncomeLossNetOfTax
Comprehensive income |  |  |  |  |  |  |  |  | 604,574 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest | 573,367 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest | 496,068 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest
Less: Comprehensive income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 59,653 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest | 43,290 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest | 45,601 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest
Comprehensive income attributable to UHS |  |  |  |  |  |  |  |  | 544,921 us-gaap_ComprehensiveIncomeNetOfTax | 530,077 us-gaap_ComprehensiveIncomeNetOfTax | 450,467 us-gaap_ComprehensiveIncomeNetOfTax
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | (830,771)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (738,024)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (709,889)us-gaap_ProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized derivative gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Amortization of terminated hedge |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Minimum pension liability |  |  |  |  |  |  |  |  | 14,270 uhs_MinimumPensionLiabilityAccrualNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (14,657)uhs_MinimumPensionLiabilityAccrualNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (4,986)uhs_MinimumPensionLiabilityAccrualNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 2,431 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  | 16,701 us-gaap_OtherComprehensiveIncomeLossBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (14,657)us-gaap_OtherComprehensiveIncomeLossBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (4,986)us-gaap_OtherComprehensiveIncomeLossBeforeTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Income tax (benefit) expense related to items of other comprehensive income |  |  |  |  |  |  |  |  | 5,356 us-gaap_OtherComprehensiveIncomeLossTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (5,670)us-gaap_OtherComprehensiveIncomeLossTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,898)us-gaap_OtherComprehensiveIncomeLossTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Total other comprehensive income, net of tax |  |  |  |  |  |  |  |  | 11,345 us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (8,987)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (3,088)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Comprehensive income |  |  |  |  |  |  |  |  | (819,426)uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (747,011)uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (712,977)uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Less: Comprehensive income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Comprehensive income attributable to UHS |  |  |  |  |  |  |  |  | (819,426)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (747,011)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (712,977)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Parent |  |  |  |  |  |  |  |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 545,343 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 510,733 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 443,446 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized derivative gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  | 17,668 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 16,963 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6,677 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Amortization of terminated hedge |  |  |  |  |  |  |  |  | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (336)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Minimum pension liability |  |  |  |  |  |  |  |  | (14,270)uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,657 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,986 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | (2,431)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  | 631 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 31,284 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 11,327 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income tax (benefit) expense related to items of other comprehensive income |  |  |  |  |  |  |  |  | 1,053 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 11,940 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,306 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total other comprehensive income, net of tax |  |  |  |  |  |  |  |  | (422)us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 19,344 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 7,021 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive income |  |  |  |  |  |  |  |  | 544,921 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 530,077 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 450,467 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Less: Comprehensive income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive income attributable to UHS |  |  |  |  |  |  |  |  | 544,921 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 530,077 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 450,467 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Guarantors |  |  |  |  |  |  |  |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 585,429 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 480,344 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 438,873 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized derivative gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Amortization of terminated hedge |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Minimum pension liability |  |  |  |  |  |  |  |  | (14,270)uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 14,657 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 4,986 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | (2,431)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  | (16,701)us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 14,657 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 4,986 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income tax (benefit) expense related to items of other comprehensive income |  |  |  |  |  |  |  |  | (5,356)us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 5,670 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,898 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Total other comprehensive income, net of tax |  |  |  |  |  |  |  |  | (11,345)us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 8,987 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 3,088 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Comprehensive income |  |  |  |  |  |  |  |  | 574,084 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 489,331 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 441,961 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Less: Comprehensive income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Comprehensive income attributable to UHS |  |  |  |  |  |  |  |  | 574,084 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 489,331 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 441,961 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Non Guarantors |  |  |  |  |  |  |  |  |  |  |
Condensed Statement of Income Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 304,995 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 300,970 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 316,617 us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |
Unrealized derivative gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Amortization of terminated hedge |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Minimum pension liability |  |  |  |  |  |  |  |  | 0 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 uhs_MinimumPensionLiabilityAccrualNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other comprehensive income (loss) before tax |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossBeforeTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income tax (benefit) expense related to items of other comprehensive income |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Total other comprehensive income, net of tax |  |  |  |  |  |  |  |  | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_OtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Comprehensive income |  |  |  |  |  |  |  |  | 304,995 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 300,970 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 316,617 uhs_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Less: Comprehensive income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 59,653 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 43,290 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 45,601 uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Comprehensive income attributable to UHS |  |  |  |  |  |  |  |  | $ 245,342 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | $ 257,680 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | $ 271,016 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember

X
- Definition Comprehensive Income Net of Tax Attributable to Noncontrolling Interest and Redeemable Noncontrolling Interest + References No definition available. + Details
Name: | uhs_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterestAndRedeemableNoncontrollingInterest
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Comprehensive Income Net of Tax Including Portion Attributable to Noncontrolling Interest and Redeemable Noncontrolling Interest + References No definition available. + Details
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- Definition Minimum Pension Liability Accrual Net Of Tax + References No definition available. + Details
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=35737396 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 + Details
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- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669625-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33775-111570 + Details
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- Definition Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6939497&loc=d3e30304-110892 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (b,d) -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900 + Details
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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669619-108580 + Details
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- Definition Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=35706170&loc=d3e41638-113959 + Details
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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e39076-109324 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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