Casino Promotional Allowances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Promotional Allowances	$ 131	$ 134	$ 403	$ 423
Cost of Promotional Allowances	65	67	197	198
Food and Beverage
Promotional Allowances	66	69	207	210
Cost of Promotional Allowances	40	42	124	125
Rooms
Promotional Allowances	57	59	174	173
Cost of Promotional Allowances	20	21	60	61
Other
Promotional Allowances	8	6	22	40
Cost of Promotional Allowances	$ 5	$ 4	$ 13	$ 12