Investment In and Advances to Unconsolidated Affiliates (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2012 tablegame machine space pokartable sqft	Jun. 30, 2011
Kansas Entertainment
Business ventures
Ownership interest in joint venture (as a percent)		50.00%
Planned facility construction costs including license fees		$ 391
Area of Casino (in square foot)		95,000
Number of slot machines		2,000
Number of table games		52
Number of poker tables		12
Number of space parking		1,253
Proportionate share in joint venture		145
Proportionate share in joint venture, amount incurred		135.6
Funding for capital expenditure and other operating expenses	$ 11.2	$ 39.1	$ 21.4
MAXXAM
Business ventures
Ownership interest in joint venture (as a percent)		50.00%
Freehold Raceway
Business ventures
Ownership interest in joint venture (as a percent)		50.00%