Commitments and Contingencies (Details) - USD ($) $ in Millions	Oct. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Oct. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Accrued liabilities for other litigation, claims, other disputes and governmental proceedings		$ 2.3	$ 2.5
Guarantor Obligations [Line Items]
Letters of credit outstanding		0.4	0.5
Purchase obligations, total		4.8
Purchase obligations, remainder of 2016		4.1
Purchase obligations, 2017		0.3
Purchase obligations, 2018		0.4
Tax year 2022 to 2024
Guarantor Obligations [Line Items]
Deferred tax liabilities		61.8
Tax year 2029
Guarantor Obligations [Line Items]
Deferred tax liabilities		69.3
Pier Park North | Refinanced Loan in the Pier Park North joint venture, due November 2025, bearing interest at 4.1% | Consolidated variable interest entities
Guarantor Obligations [Line Items]
Letters of credit outstanding		6.6		$ 6.6
Surety bonds | Certain development projects
Guarantor Obligations [Line Items]
Commitment obligations		$ 6.2	$ 7.1
Subsequent Event | Pier Park North | Refinanced Loan in the Pier Park North joint venture, due November 2025, bearing interest at 4.1% | Consolidated variable interest entities
Guarantor Obligations [Line Items]
Letters of credit outstanding	$ 1.3