XML 54 R39.htm IDEA: XBRL DOCUMENT
v3.20.4

Estimated Cost of Providing Uncompensated Care (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Health Care Trust Fund [Line Items] |  |  |
Estimated cost of providing uncompensated care | $ 260,494 | $ 253,014 | $ 234,001
Charity Care |  |  |
Health Care Trust Fund [Line Items] |  |  |
Estimated cost of providing uncompensated care | 73,690 | 77,886 | 94,088
Uninsured Discounts |  |  |
Health Care Trust Fund [Line Items] |  |  |
Estimated cost of providing uncompensated care | $ 186,804 | $ 175,128 | $ 139,913

X
- Definition Estimated cost of uncompensated care. + References No definition available. + Details
Name: | uhs_EstimatedCostOfUncompensatedCare
Namespace Prefix: | uhs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_HealthCareTrustFundLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HealthCareTrustFundAxis=uhs_CharityCareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HealthCareTrustFundAxis=uhs_UninsuredDiscountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |