Proposed Spin-Off of Real Estate Assets through a Real Estate Investment Trust (Details) (USD $) In Billions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 item
Proposed Spin-Off of Real Estate Assets through a Real Estate Investment Trust
Number of publicly traded companies	2
Special E&P taxable dividend	$ 1.05
Special E&P cash dividend, minimum (as a percent)	20.00%
Number of shares of common stock that will be issued to the holders of common stock and Series C convertible preferred stock	1
Number of shares of Series C preferred stock entitled by one share of common stock on the record date	0.001
Percentage of common stock required to be owned by Carlino Group to qualify as a real estate investment trust	10.00%
Period of the Master Lease agreement	15 years
Number of lease renewal options	4
Term of lease renewal options	5 years
Ownership interest in joint venture (as a percent)	50.00%
Number of non-casino racetracks	7