Other Assets - Restricted Investments (Details)	12 Months Ended
Dec. 31, 2019
Other Assets
401(k) Plan distribution period (in years)	2 years

Period for allocation of restricted assets to defined contribution participants, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	joe_DefinedContributionPlanDistributionPeriod
Namespace Prefix:	joe_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration