Property and Equipment, net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended	3 Months Ended
	Sep. 30, 2014 Continuing Operations [Member]	Sep. 30, 2014 Continuing Operations [Member]	Sep. 30, 2013 MISSISSIPPI Continuing Operations [Member]	Jun. 30, 2013 MISSISSIPPI Continuing Operations [Member]	Sep. 30, 2013 MISSISSIPPI Continuing Operations [Member]	Sep. 30, 2013 Atlantic Destination [Member] Continuing Operations [Member]	Sep. 30, 2014 Harrah's Reno [Member]	Mar. 31, 2014 Harrahs Tunica [Member]	Sep. 30, 2013 Harrahs Tunica [Member]
Property, Plant and Equipment [Line Items]
Tangible asset impairment charges	$ 53.2	$ 60.9	$ 498.7	$ 104.3	$ 603.0	$ 498.7	$ 50.4	$ 66.8	$ 112.3