Other Assets - Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Other Assets
Other assets, Escrow deposits	$ 7.7	$ 3.9
Other assets, Derivative assets	$ 4.5	$ 0.6

Amount of escrow deposits primarily related to financing and development requirements for certain projects included in other miscellaneous assets.

No definition available.

Name:	joe_OtherAssetsMiscellaneousEscrowDeposits
Namespace Prefix:	joe_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant