Asset Acquisitions and Divestitures Real Estate Dispositions (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended		0 Months Ended
	Feb. 22, 2013 Dania Jai-Alai [Member]	May 31, 2011 Dania Jai-Alai [Member]	Mar. 01, 2013 Echelon Development [Member]	Mar. 04, 2013 Echelon Development [Member] acre
Disposition of Real Estate Development, Consideration Received, Gross			$ 350
Area of Land Sold				87
Disposition of Real Estate Development, Consideration Received, Net of Consideration Transferred to Variable Interest Entity and Transaction Costs			157.0
Divestiture of Business Unit, Consideration Received	65.5
Security Deposit		$ 7