XML 61 R45.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Financial Instruments - Additional Information (Detail) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 31, 2015 USD ($) | May 31, 2015 USD ($) Derivative | Dec. 31, 2011 USD ($) Derivative | Mar. 31, 2011 USD ($) Derivative | Dec. 31, 2015 USD ($) Derivative | Sep. 30, 2015 USD ($) Derivative | Jun. 30, 2015 USD ($) Derivative | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) Derivative
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  |  |  |  | 4 |  |  |  |
Maturity date of interest rate cash flow hedges | May 31, 2015 |  |  |  |  |  |  |  |  |
Two Point Three Eight Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  | 4 |  |  |  |  |  |  |
Fixed rate payable on interest rate swap |  |  | 2.38% |  |  |  |  |  |  |
One Point Nine One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  |  | 3 |  |  |  |  |  |
Fixed rate payable on interest rate swap |  |  |  | 1.91% |  |  |  |  |  |
One Point Three One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  |  |  |  |  |  |  |  | 9
Maturity date of interest rate cash flow hedges |  |  |  |  |  |  |  |  |  | Apr. 15, 2019
Fixed rate payable on interest rate swap |  |  |  |  | 1.31% |  |  |  |  | 1.31%
One Point Four Zero Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  |  |  |  |  | 4 |  |  |
Maturity date of interest rate cash flow hedges |  |  |  |  |  |  | Apr. 15, 2019 |  |  |
Average fixed rate payable on interest rate swap |  |  |  |  |  |  | 1.40% |  |  |
One Point Two Three Percent Forward Starting Interest Rate Swaps One |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Maturity date of interest rate cash flow hedges |  |  |  |  |  | Apr. 15, 2019 |  |  |  |
Average fixed rate payable on interest rate swap |  |  |  |  |  | 1.23% |  |  |  |
One Point Two One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  |  |  |  | 1 |  |  |  |  |
Maturity date of interest rate cash flow hedges |  |  |  |  | Apr. 15, 2019 |  |  |  |  |
Fixed rate payable on interest rate swap |  |  |  |  | 1.21% |  |  |  |  | 1.21%
Interest Rate Swap |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of our interest rate swaps |  |  |  |  |  |  |  | $ 7,000,000 |  |
Fair value of our interest rate swaps, liability |  |  |  |  |  |  |  |  | $ 4,000,000 |
Fair value of our interest rate swaps, assets |  |  |  |  |  |  |  |  | 4,000,000 |
Interest Rate Swap | Net Accounts Receivable |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of our interest rate swaps, assets |  |  |  |  |  |  |  | 4,000,000 |  |
Interest Rate Swap | Other Assets |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of our interest rate swaps, assets |  |  |  |  |  |  |  | 3,000,000 |  |
Foreign Currency Forward Exchange Contracts |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Net cash (outflows) inflows |  |  |  |  |  |  |  | (64,000,000) | 79,000,000 | $ 23,000,000
Fair Value Hedge |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of hedges outstanding |  |  |  |  | $ 0 |  |  | $ 0 | $ 0 | 0
Cash Flow Hedging |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Number of additional forward starting interest rate swaps | Derivative |  | 7 |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges | $ 825,000,000 | $ 825,000,000 |  |  |  |  |  |  |  |
Cash Flow Hedging | Two Point Three Eight Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  | $ 600,000,000 |  |  |  |  |  |  |
Cash Flow Hedging | One Point Nine One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  | $ 225,000,000 |  |  |  |  |  |
Cash Flow Hedging | One Point Three One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  | 1,000,000,000 |  |  |  |  | 1,000,000,000
Cash Flow Hedging | One Point Four Zero Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  |  |  | $ 500,000,000 |  |  |
Cash Flow Hedging | Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  |  | $ 400,000,000 |  |  |  |
Cash Flow Hedging | One Point Two Three Percent Forward Starting Interest Rate Swaps One |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  |  | 100,000,000 |  |  |  |
Cash Flow Hedging | One Point Two Three Percent Forward Starting Interest Rate Swaps Two |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  |  | 200,000,000 |  |  |  |
Cash Flow Hedging | One Point Two Three Percent Forward Starting Interest Rate Swaps Three |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  |  | $ 100,000,000 |  |  |  |
Cash Flow Hedging | One Point Two One Percent Forward Starting Interest Rate Swaps |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate cash flow hedges |  |  |  |  | $ 100,000,000 |  |  |  |  | $ 100,000,000

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of additional forward starting interest rate swaps. + References No definition available. + Details
Name: | uhs_NumberOfAdditionalForwardStartingInterestRateSwaps
Namespace Prefix: | uhs_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInOperatingCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value as of the balance sheet date of all interest rate derivative assets designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
Name: | us-gaap_InterestRateCashFlowHedgeAssetAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
Name: | us-gaap_InterestRateCashFlowHedgeDerivativeAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
Name: | us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_TwoPointThreeEightPercentForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointNineOnePercentForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointThreeOnePercentForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointFourZeroPercentForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointTwoThreePercentForwardStartingInterestRateSwapsOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointTwoOnePercentForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=uhs_AccountsReceivableNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_FairValueHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_ForwardStartingInterestRateSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointTwoThreePercentForwardStartingInterestRateSwapsTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=uhs_OnePointTwoThreePercentForwardStartingInterestRateSwapsThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |