Other Income, Net - Gain on Contribution and Other Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Watersound Fountains Independent Living JV
Other Income, Net
Gain on land contribution	$ 3.1
Busy Bee JV
Other Income, Net
Gain on land contribution			$ 0.8
Pier Park TPS JV
Other Income, Net
Gain on land contribution			1.4
Gain on land and mitigation credits			$ 1.5
Sea Sound Apartments JV
Other Income, Net
Gain on land contribution		$ 3.9
Gain on land and mitigation credits		4.3
Latitude Margaritaville Watersound JV
Other Income, Net
Gain on additional infrastructure improvements contributed	$ 0.5
Gain on land and additional infrastructure improvements contributed to to unconsolidated joint venture		$ 15.7
Net present value of land contribution				$ 16.6
Imputed interest rate (as a percent)	5.80%