| Document and Entity Information | Feb. 27, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 27, 2024 |
| Entity Registrant Name | UNIVERSAL HEALTH REALTY INCOME TRUST |
| Entity Central Index Key | 0000798783 |
| Entity Emerging Growth Company | false |
| Entity File Number | 1-9321 |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 23-6858580 |
| Entity Address, Address Line One | Universal Corporate Center |
| Entity Address, Address Line Two | 367 South Gulph Road |
| Entity Address, City or Town | King of Prussia |
| Entity Address, State or Province | PA |
| Entity Address, Postal Zip Code | 19406 |
| City Area Code | 610 |
| Local Phone Number | 265-0688 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Shares of beneficial interest, $0.01 par value |
| Trading Symbol | UHT |
| Security Exchange Name | NYSE |
