Stock-Based Compensation - CIE Stock Option Grants and Exercises (Details) - Caesars Interactive Entertainment [Member] - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted		10,350	1,135	6,300
Weighted Average Grant-Date Fair Value per share (1)	[1]	$ 4,670.27	$ 4,717.02	$ 2,620.48
Weighted Average Exercise Price per Share (1)		$ 15,352.49	$ 9,976.43	$ 5,539.98
Number of options exercised		1,984	3,822	365
Cash received for options exercised		$ 5	$ 6	$ 1
Aggregate intrinsic value of options exercised		$ 21	$ 27	$ 1

[1] Represents the weighted-average grant date fair value per option, using the Monte Carlo simulation option-pricing model for performance-based options, and the Black-Scholes option-pricing model for time-based options.