Property and Equipment (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,221	$ 9,078
Less: accumulated depreciation	(1,765)	(1,494)
Property and equipment, net	7,456	7,584
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,584	3,584
Buildings, riverboats, and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	4,189	4,128
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	1,372	1,307
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 76	$ 59