XML 50 R42.htm IDEA: XBRL DOCUMENT
v3.25.2

Commitments and Contingencies - Additional Information (Detail) £ in Millions |  |  |  | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 10, 2024 USD ($) | Sep. 27, 2024 USD ($) Plaintiffs | Mar. 28, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2025 GBP (£) | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Jun. 30, 2025 GBP (£) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2014 USD ($)
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial reinsurance carriers per occurrence excess claim amount |  |  |  | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability, current |  |  |  | 85,000,000 |  |  | $ 85,000,000 |  |  |  |  |  |  |  |  |  |
Compensation liability claims |  |  |  | 147,000,000 |  |  | 137,000,000 |  |  |  |  |  |  |  |  |  |
Compensation and related benefits |  |  |  | 58,000,000 |  |  | 58,000,000 |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Self insurance reserve amount exhausted |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial reinsurance amount exhausted |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
District Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected aggregate development and construction cost |  |  |  | 439,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Development and construction cost incurred |  |  |  | $ 405,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 75 years |  |  |  | 75 years |  |  |  |  |  |  |  |  |
Committment to expend |  |  |  | $ 19,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Projected commitment expend period |  |  |  | 12 years | 12 years |  |  |  |  |  |  |  |  |  |  |  |
The Pavilion Behavioral Health System | Compensatory Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | $ 475,000,000 |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | 120,000,000 |  | $ 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | Plaintiffs |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate insurance coverage |  |  |  | $ 147,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Compensatory Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Trebled Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | 180,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Punitive damage amount, per plaintiff |  | $ 350,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Compensatory Damages, Trebled Damages And Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | Plaintiffs |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Wind Storms | PUERTO RICO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Earthquake Wind Hail and Flood |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
All Other Events |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property insurance | £ |  |  |  |  | £ 2,300 |  |  |  |  |  |  |  |  |  |  |  |
Property insurance per occurrence | £ |  |  |  |  | £ 150 |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial insurance carriers per occurrence |  |  |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 10 years |  |  |  | 10 years |  |  |  |  |  |  |  |  |
Maximum | The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Cumberland Hospital for Children and Adolescents | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | $ 1,050,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of insurance deductible |  |  |  | 5.00% |  |  |  | 5.00% |  |  |  |  |  |  |  |  |
Maximum | Earthquake | CALIFORNIA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | South Carolina |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | PUERTO RICO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 40,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | OTHER STATES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood | PUERTO RICO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood | Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 5 years |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Loss on business interruption insurance recovery |  |  |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | District Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Committment to expend |  |  |  | $ 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | $ 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of insurance deductible |  |  |  | 3.00% |  |  |  | 3.00% |  |  |  |  |  |  |  |  |
Professional Liability | Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
General Liability | Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
General and Professional Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 487,000,000 |  |  | 487,000,000 |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  |  |  | $ 14,000,000 | 79,000,000 |  |  |  |  |  |  |  |  |  |
Subsidiaries | Professional Liability | Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability | £ |  |  |  |  |  |  |  | £ 20 |  |  |  |  |  |  |  |  |
Subsidiaries | Professional Liability | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 20,000,000 |  |  | 20,000,000 |  | $ 20,000,000 | $ 20,000,000 | $ 20,000,000 | $ 10,000,000 | $ 5,000,000 | $ 5,000,000 | $ 5,000,000 | $ 10,000,000 |
Subsidiaries | General Liability | Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability | £ |  |  |  |  |  |  |  | £ 25 |  |  |  |  |  |  |  |  |
Subsidiaries | General Liability | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 3,000,000 |  |  | 3,000,000 |  | 3,000,000 | 3,000,000 | 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000 |
Subsidiaries | General And Professional Liability Insurance Policies | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial insurance carriers per occurrence |  |  |  | $ 110,000,000 |  |  | $ 175,000,000 |  | $ 165,000,000 | $ 162,000,000 | $ 155,000,000 |  |  |  |  |  | $ 250,000,000

X
- Definition Aggregate insurance coverage. + References No definition available. + Details
Name: | uhs_AggregateInsuranceCoverage
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Commitments and contingencies disclosure. + References No definition available. + Details
Name: | uhs_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | uhs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Development and construction cost incurred. + References No definition available. + Details
Name: | uhs_DevelopmentAndConstructionCostIncurred
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Increase decrease of revenues. + References No definition available. + Details
Name: | uhs_IncreaseDecreaseOfRevenues
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value (monetary amount) of the award per plaintiff in the legal matter. + References No definition available. + Details
Name: | uhs_LossContingencyDamagesSoughtValuePerPlaintiff
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss on business interruption insurance recovery. + References No definition available. + Details
Name: | uhs_LossOnBusinessInterruptionInsuranceRecovery
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum insurance deductible. + References No definition available. + Details
Name: | uhs_MaximumInsuranceDeductible
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of insurance deductible. + References No definition available. + Details
Name: | uhs_PercentageOfInsuranceDeductible
Namespace Prefix: | uhs_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Projected aggregate development and construction cost. + References No definition available. + Details
Name: | uhs_ProjectedAggregateDevelopmentAndConstructionCost
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of premium revenue earned by property-casualty insurance underwriter for occurrence. + References No definition available. + Details
Name: | uhs_PropertyCasualtyInsuranceUnderwritersEarnedPremiumsPerOccurrence
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Self insurance reserve amount exhausted. + References No definition available. + Details
Name: | uhs_SelfInsuranceReserveAmountExhausted
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Self insured amount per occurrence. + References No definition available. + Details
Name: | uhs_SelfInsuredAmountPerOccurrence
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Self insured amount per occurrence excess claims. + References No definition available. + Details
Name: | uhs_SelfInsuredAmountPerOccurrenceExcessClaims
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Self insured amount per occurrence exhausted. + References No definition available. + Details
Name: | uhs_SelfInsuredAmountPerOccurrenceExhausted
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Self-insured retention amounts. + References No definition available. + Details
Name: | uhs_SelfInsuredRetentionAmounts
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -SubTopic 10 -Name Accounting Standards Codification -Section 25 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483070/710-10-25-9 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483043/710-10-30-2 + Details
Name: | us-gaap_DeferredCompensationLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of estimated liability as of the balance sheet date for the specific conflagration, earthquake, windstorm, explosion, or similar event. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.W.Q2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479583/944-40-S99-1 + Details
Name: | us-gaap_LiabilityForCatastropheClaimsCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-7 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(13)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_SelfInsuranceReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_SelfInsuranceReserveCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of premium revenue earned by property-casualty insurance underwriter. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-18(Column F)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477965/944-235-S99-3 + Details
Name: | us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersEarnedPremiums
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=uhs_DistrictFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=uhs_ThePavilionBehavioralHealthSystemMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=uhs_CompensatoryDamagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=uhs_PunitiveDamagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=uhs_CumberlandHospitalForChildrenAndAdolescentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=uhs_TrebledDamagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=uhs_CompensatoryDamagesTrebledAndPunitiveDamagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=uhs_WindStormsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_PR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=uhs_EarthquakeWindHailAndFloodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=uhs_AllOtherEventsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=uhs_CygnetHealthCareLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=us-gaap_EarthquakeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=uhs_OtherStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=us-gaap_FloodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=us-gaap_ProfessionalMalpracticeLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=us-gaap_GeneralLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=uhs_GeneralAndProfessionalLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfMalpracticeInsuranceTypeAndTierIdentifierAxis=uhs_GeneralAndProfessionalLiabilityInsurancePoliciesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |