Fair Value Measurements - Fair Value of Assets Required to be Measured at Fair Value (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended						9 Months Ended										9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 1 [Member]	Sep. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 2 [Member]	Sep. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 3 [Member]	Sep. 30, 2013 Intangible and tangible assets [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2013 Net assets held for sale [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member]	Jun. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member]	Mar. 31, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member]	Dec. 31, 2012 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 1 [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 2 [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 3 [Member]	Sep. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Contingent earnout liability [Member] Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Intangible and tangible assets					$ 2,651.2	$ 0	$ 0	$ 2,651.2
Net assets held for sale					445.3	0	0	445.3
Contingent earnout liability											54.5	54.5	58.0	5.6	57.0	0	0	57.0
Intangible and tangible asset impairment charges	$ 930.9	$ 419.0	$ 1,055.6	$ 626.0					$ 954.0	$ 27.5									$ 48.9