XML 50 R36.htm IDEA: XBRL DOCUMENT
v3.20.2

Summary of Cash, Cash Equivalents and Restricted Cash Reported In Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) | 6 Months Ended
--- | ---
Jun. 30, 2020
Minimum |
Cash And Cash Equivalents Period Increase Decrease [Line Items] |
Short -term cash investments interest rate | 0.10%
Maximum |
Cash And Cash Equivalents Period Increase Decrease [Line Items] |
Short -term cash investments interest rate | 0.65%

X
- Definition Cash and cash equivalents period increase decrease. + References No definition available. + Details
Name: | uhs_CashAndCashEquivalentsPeriodIncreaseDecreaseLineItems
Namespace Prefix: | uhs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Short -term cash investments interest rate. + References No definition available. + Details
Name: | uhs_ShortTermCashInvestmentsInterestRate
Namespace Prefix: | uhs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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: |