Goodwill and Other Intangible Assets - Changes in Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Goodwill and Other Intangible Assets [Roll Forward]
Amortizing Intangible Assets, Beginning Balance		$ 636	$ 730
Finite-lived Intangible Assets Acquired	[1]	0	50
Impairment of Intangible Assets, Finite-lived		0	(2)
Amortization of Intangible Assets		(89)	(133)
Amortizing Intangible Assets, Other		0	(9)
Amortizing Intangible Assets, Ending Balance		395	636
Other Non-Amortizing Intangible Assets, Beginning Balance		2,514	2,758
Indefinite-lived Intangible Assets Acquired	[1]	0	0
Other Non-Amortizing Intangible Assets, Impairment		0	(240)
Indefinite-lived Intangible Assets, Period Increase (Decrease)		0	(4)
Other Non-Amortizing Intangible Assets, Ending Balance		148	2,514
Intangible assets other than goodwill, Beginning Balance		3,150	3,488
Finite-lived Intangible Assets Acquired	[1]	0	50
Impairment of Intangible Assets (Excluding Goodwill)		0	(242)
Amortization of Intangible Assets		(89)	(133)
Increase (Decrease) in Intangible Assets, Current		0	(13)
Intangible assets other than goodwill, Ending Balance		543	3,150
Caesars Entertainment Operating Company [Member]
Goodwill and Other Intangible Assets [Roll Forward]
Amortizing Intangible Assets, Other		(152)	0
Indefinite-lived Intangible Assets, Period Increase (Decrease)		(2,366)	0
Increase (Decrease) in Intangible Assets, Current		$ (2,518)	$ 0

[1] During 2014, we increased our amortizing intangible assets $50 million, primarily as a result of the Pacific Interactive acquisition (see Note 7).