Revenue Recognition - Contract Liabilities (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019		Dec. 31, 2018
Contract with Customer, Liability		$ 166	[1]	$ 149	[2]
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized	[3]	(184)
Contract with Customer, Liability, Current		201
Contract with Customer, Liability, Noncurrent		5		5
Customer Loyalty Program [Member]
Contract with Customer, Liability		67	[1]	66	[2]
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized	[3]	(32)
Contract with Customer, Liability, Current		33
Contract with Customer, Liability, Revenue Recognized		15
Customer Advances [Member]
Contract with Customer, Liability		99	[1]	$ 83	[2]
Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized	[3]	(152)
Contract with Customer, Liability, Current		168
Contract with Customer, Liability, Revenue Recognized		$ 51

[1] (3) $5 million included within Deferred credits and other liabilities as of March 31, 2019. Includes lodging arrangement and convention contract liabilities accounted for under ASC 842. See Note 7 for further details.

[2] (1) $5 million included within Deferred credits and other liabilities as of December 31, 2018.

[3] (2) Includes $15 million for Caesars Rewards and $51 million for Customer Advances recognized from the December 31, 2018 Contract liability balances.