Earnings Per Share Earnings Per Share - Basic and Dilutive Net Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Income/(loss) from continuing operations attributable to Caesars, net of income taxes									$ 5,927	$ (2,591)	$ (2,741)
Loss from discontinued operations attributable to Caesars, net of income taxes									(7)	(192)	(207)
Net income/(loss) attributable to Caesars	$ (76)	$ (791)	$ 15	$ 6,772	$ (1,023)	$ (908)	$ (466)	$ (386)	$ 5,920	$ (2,783)	$ (2,948)
Weighted-average common shares outstanding - basic									145	142	129
Dilutive potential common shares: Stock options									2	0	0
Weighted average common shares and dilutive potential common shares									147	142	129
Basic income/(loss) per share from continuing operations									$ 40.92	$ (18.18)	$ (21.32)
Basic loss per share from discontinued operations									(0.04)	(1.35)	(1.61)
Basic income/(loss) per share	$ (0.54)	$ (5.44)	$ 0.10	$ 46.81	$ (7.08)	$ (6.29)	$ (3.24)	$ (2.82)	40.88	(19.53)	(22.93)
Diluted income/(loss) per share from continuing operations									40.30	(18.18)	(21.32)
Diluted loss per share from discontinued operations									(0.04)	(1.35)	(1.61)
Diluted income/(loss) per share	$ (0.54)	$ (5.44)	$ 0.10	$ 46.12	$ (7.08)	$ (6.29)	$ (3.24)	$ (2.82)	$ 40.26	$ (19.53)	$ (22.93)