| Cover Page | Sep. 30, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Sep. 30, 2019 |
| Entity Registrant Name | Stratus Properties Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37716 |
| Entity Tax Identification Number | 72-1211572 |
| Entity Address, Address Line One | 212 Lavaca St., Suite 300 |
| Entity Address, City or Town | Austin |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78701 |
| City Area Code | 512 |
| Local Phone Number | 478-5788 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | STRS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0000885508 |
