Investments in Unconsolidated Entities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investments in joint ventures included in unconsolidated entities	$ 81.1		$ 81.1		$ 64.3
Net income (loss) attributable to variable interest entities	$ (0.4)	$ 0.2	$ 1.6	$ 2.0