Casino Promotional Allowance Retail Value (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Promotional Allowances	$ 134	$ 295	$ 423	$ 854
Food and Beverage
Promotional Allowances	69	159	210	467
Rooms
Promotional Allowances	59	109	173	315
Other
Promotional Allowances	$ 6	$ 27	$ 40	$ 72