Other Assets - Accounts Receivable, Net (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Net
Allowance for credit losses	$ 0.4	$ 0.2
Allowance for lease related receivables	0.1	0.1
Maximum
Accounts Receivable, Net
Allowance for lease related receivables	0.1	$ 0.1
Increase (decrease) in allowance for credit losses related to accounts receivable	$ 0.2

Amount of allowance for credit loss on accounts receivable, excluding lease related receivable.

No definition available.

Name:	joe_AllowanceForDoubtfulAccountsReceivableExcludingLeaseRelatedReceivable
Namespace Prefix:	joe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of allowance for credit loss on lease related receivables.

+ References

No definition available.

+ Details

Name:	joe_AllowanceForDoubtfulLeaseRelatedReceivables
Namespace Prefix:	joe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) in allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: