| **Description of Business and Basis of Presentation - Additional Information (Details)** | 9 Months Ended |
|------------------------------------------------------------------------------------------|----------------|
||
| **Accounting Policies [Abstract]**                                                       |           |
| Land owned (in acres)                                                                    | 567,000        |
| Area of harvestable land (in acres)                                                      | 315,000        |
| Number of reportable operating segments                                                  | 5              |

| X                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Area of Harvestable Land
+ References
No definition available.
+ Details**Name:**joe_AreaofHarvestableLand**Namespace Prefix:**joe_**Data Type:**num:areaItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_AccountingPoliciesAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Area of land held.
+ References
No definition available.
+ Details**Name:**us-gaap_AreaOfLand**Namespace Prefix:**us-gaap_**Data Type:**num:areaItemType**Balance Type:**na**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.
+ References
No definition available.
+ Details**Name:**us-gaap_NumberOfReportableSegments**Namespace Prefix:**us-gaap_**Data Type:**xbrli:integerItemType**Balance Type:**na**Period Type:**duration |