Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 L'Auberge Casino and Hotel Baton Rouge [Member]	Dec. 31, 2011 Lumiere Place [Member]	Mar. 31, 2010 River City Casino [Member]	Dec. 31, 2011 River City Casino [Member] spaces sqft
Long-term Purchase Commitment [Line Items]
Total guaranteed maximum price			$ 229.0
Expected percentage increase in budget			3.00%
Expected updated budget amount			368
Original budget amount			357
Commitment amount				50.0	375.0
Number of years in Redevelopment Agreement				5 years
Invesment credits				13.0
Service fee in year six				1.0
Service fee after year six				2.0
Annual fee				1.0
Future annual minimum rent amount					4.0
Future annual minimum rent, percentage of annual adjusted gross receipts					2.50%
Minimum square footage of meeting space required						10,000
Minimum number of parking spaces required						1,600
Term of lease agreement						99 years
Purchase commitment, additional amount						75
Liquidated damages, annual increase						1.0
Liquidated damages, year one						2.0
Liquidated damages, year two						3.0
Liquidated damages, year three						4.0
Liquidated damages, year four						5.0
Liquidated damages, year five						6.0
Liquidated damages, maximum amount						20.0
Self insurance reserve	$ 14.8	$ 16.9