Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 25, 2022
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-10466
Entity Registrant Name	The St. Joe Company
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-0432511
Entity Address, Address Line One	130 Richard Jackson Boulevard
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Panama City Beach
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32407
City Area Code	850
Local Phone Number	231-6400
Title of 12(b) Security	Common Stock
Trading Symbol	JOE
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		58,912,504
Entity Central Index Key	0000745308
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false