Casino Promotional Allowances (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Promotional Allowances	$ 298.6	$ 293.6
Cost of Promotional Allowances	180.1	169.7
Food and Beverage [Member]
Promotional Allowances	164.8	159.4
Cost of Promotional Allowances	121.8	113.2
Rooms [Member]
Promotional Allowances	109.9	110.6
Cost of Promotional Allowances	44.5	44.2
Other Promotional Allowances [Member]
Promotional Allowances	23.9	23.6
Cost of Promotional Allowances	$ 13.8	$ 12.3