| Document and Entity Information | Jul. 24, 2024 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 24, 2024 |
| Entity Registrant Name | The St. Joe Company |
| Entity Incorporation, State or Country Code | FL |
| Entity File Number | 1-10466 |
| Entity Tax Identification Number | 59-0432511 |
| Entity Address, Address Line One | 130 Richard Jackson Blvd |
| Entity Address, Adress Line Two | Suite 200 |
| Entity Address, City or Town | Panama City Beach |
| Entity Address State Or Province | FL |
| Entity Address, Postal Zip Code | 32407 |
| City Area Code | 850 |
| Local Phone Number | 231-6400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | JOE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000745308 |
| Amendment Flag | false |
