Casino Promotional Allowances (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Promotional Allowances	$ 1,178.6	$ 1,252.1	$ 1,232.3
Cost of Promotional Allowances	685.3	713.1	716.1
Food and Beverage [Member]
Promotional Allowances	628.5	651.3	636.9
Cost of Promotional Allowances	459.0	476.7	469.0
Rooms [Member]
Promotional Allowances	457.6	481.1	484.3
Cost of Promotional Allowances	178.7	186.7	188.2
Other Promotional Allowances [Member]
Promotional Allowances	92.5	119.7	111.1
Cost of Promotional Allowances	$ 47.6	$ 49.7	$ 58.9