Investment in and Advances to Unconsolidated Affiliates Equity Method Investment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
Income (Loss) from Equity Method Investments	$ 3.8	$ 3.0
Casino revenue	36.0	31.9
Non-casino revenue	2.0	2.0
Net revenue	38.0	33.9
Operating and SG&A expense	26.8	24.6
Depreciation & amortization expense	3.2	3.1
Operating income	8.0	6.2
Interest and other expense, net	(0.9)	(1.1)
Net income	7.1	5.1
Miami Valley Gaming and Racing [Member]
Schedule of Equity Method Investments [Line Items]
Income (Loss) from Equity Method Investments	$ 3.6	$ 2.6