Fair Value Measurements - Fair Value of Assets Required to be Measured at Fair Value (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended						6 Months Ended									6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Fair Value, Measurements, Nonrecurring [Member]	Jun. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 1 [Member]	Jun. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 2 [Member]	Jun. 30, 2013 Fair Value, Measurements, Nonrecurring [Member] Level 3 [Member]	Jun. 30, 2013 Intangible and tangible assets [Member] Fair Value, Measurements, Nonrecurring [Member]	Jun. 30, 2013 Net assets held for sale [Member] Fair Value, Measurements, Nonrecurring [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]	Jun. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member]	Jun. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 1 [Member]	Jun. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 2 [Member]	Jun. 30, 2013 Caesars Interactive Entertainment [Member] Buffalo Studios, LLC [Member] Fair Value, Measurements, Nonrecurring [Member] Level 3 [Member]	Jun. 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					$ 34.5	$ 0	$ 19.4	$ 15.1
Net assets held for sale					393.3	0	0	393.3
Contingent earnout liability											54.5	58.0	5.6	54.5	0	0	54.5
Intangible and tangible asset impairment charges	$ 104.7	$ 33.0	$ 124.7	$ 207.0					$ 124.7	$ 21.0								$ 48.9