Property and Equipment, net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Recorded impairment of tangible assets	$ 13.9
Impairment of intangible and tangible assets	3,018.9	1,074.2	32.8
Atlantic City [Member]
Property, Plant and Equipment [Line Items]
Recorded impairment of tangible assets	2,356.8	450.0
MISSISSIPPI
Property, Plant and Equipment [Line Items]
Recorded impairment of tangible assets	79.3	180.5
Impairment of intangible and tangible assets	$ 114.8