Joint Ventures - Consolidated Joint Ventures (Details)	6 Months Ended	12 Months Ended
Joint Ventures - Consolidated Joint Ventures (Details)	Jun. 30, 2025 room item	Dec. 31, 2024
Mexico Beach Crossings JV
Variable interest entity
Ownership in consolidated voting interest entity (as a percent)	75.00%	75.00%
Mexico Beach Crossings JV \| Multi-family community (apartment)
Variable interest entity
Number of completed units	216
The Lodge 30A JV
Variable interest entity
Variable interest entity, ownership percentage	52.80%	52.80%
The Lodge 30A JV \| Hotel
Variable interest entity
Number of units opened in period \| room	85
Pier Park Resort Hotel JV
Variable interest entity
Variable interest entity, ownership percentage	70.00%	70.00%
Pier Park Resort Hotel JV \| Hotel
Variable interest entity
Number of units opened in period \| room	255
Pier Park Crossings Phase II JV
Variable interest entity
Variable interest entity, ownership percentage	75.00%	75.00%
Pier Park Crossings Phase II JV \| Multi-family community (apartment)
Variable interest entity
Number of completed units	120
Watercrest JV
Variable interest entity
Variable interest entity, ownership percentage	87.00%	87.00%
Watercrest JV \| Senior living community
Variable interest entity
Number of completed units	107
Watersound Origins Crossings JV
Variable interest entity
Variable interest entity, ownership percentage	75.00%	75.00%
Watersound Origins Crossings JV \| Multi-family community (apartment)
Variable interest entity
Number of completed units	217
Pier Park Crossings JV
Variable interest entity
Variable interest entity, ownership percentage	75.00%	75.00%
Pier Park Crossings JV \| Multi-family community (apartment)
Variable interest entity
Number of completed units	240
Pier Park North JV
Variable interest entity
Variable interest entity, ownership percentage	90.00%	90.00%

ST JOE Co 10-Q