Revenue Recognition - Effect of Adopting New Revenue Recognition Standard (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017		Dec. 31, 2016
Revenue from Contract with Customer, Including Assessed Tax		$ 2,185	$ 993	$ 6,276	$ 2,967
Receivables, net		472		472		$ 494
Property and equipment, net		16,029		16,029		16,154	[1]
Accrued expenses and other current liabilities (2)		1,260		1,260		1,326	[2]
Contract liabilities		154		154		129	[2]
Financing obligations		9,957		9,957		9,355	[1]
Deferred credits and other liabilities		1,262		1,262		1,474
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		3,167	(3,966)	3,167	(3,966)	3,297		$ (1,607)
Total operating expenses		1,953	909	5,637	2,584
Income/(loss) from operations		232	84	639	383
Net income/(loss)		111	(439)	106	(2,379)
Consolidation, Eliminations [Member]
Net income/(loss)			14		23
Adjustments for New Accounting Pronouncement [Member]
Receivables, net						(2)
Property and equipment, net	[1]					(74)
Accrued expenses and other current liabilities (2)	[2]					(133)
Contract liabilities	[2]					129
Financing obligations	[1]					(74)
Deferred credits and other liabilities						1
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						1		2
Accounting Standards Update 2014-09 [Member]
Revenue from Contract with Customer, Including Assessed Tax		2,140	944	6,153	2,825
Product and Service, Other [Member]
Revenues		45	49	123	142
Revenue from Contract with Customer, Including Assessed Tax		213	145	600	409
Casino [Member]
Revenue from Contract with Customer, Including Assessed Tax		1,102	389	3,147	1,199
Food and Beverage [Member]
Revenue from Contract with Customer, Including Assessed Tax		408	206	1,182	617
Occupancy [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 395	253	$ 1,150	742
Previously Reported [Member]
Revenues			986		2,951
Receivables, net						496
Property and equipment, net	[1]					16,228
Accrued expenses and other current liabilities (2)	[2]					1,459
Contract liabilities	[2]					0
Financing obligations	[1]					9,429
Deferred credits and other liabilities						1,473
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						$ 3,296		$ (1,609)
Total operating expenses			905		2,572
Income/(loss) from operations			81		379
Net income/(loss)			(441)		(2,383)
Previously Reported [Member] | Consolidation, Eliminations [Member]
Revenues			0		0
Total operating expenses			0		0
Income/(loss) from operations			0		0
Net income/(loss)			14		23
Previously Reported [Member] | Caesars Entertainment Corporation [Member]
Revenues			986		2,951
Total operating expenses			900		2,550
Income/(loss) from operations			86		401
Net income/(loss)			(460)		(2,410)
Previously Reported [Member] | Caesars Acquisition Company [Member]
Revenues			0		0
Total operating expenses			5		22
Income/(loss) from operations			(5)		(22)
Net income/(loss)			$ 5		$ 4

[1] The conditions that were considered prohibited forms of continuing involvement related to our sale of the Golf Course Properties (see Note 8) are no longer considered continuing involvement under the new revenue recognition standard. As of result of adopting the new standard on a full retrospective basis, we are now reflecting this transaction as a completed sale in the period in which it occurred.

[2] Adjustments are primarily related to the reclassification of assets and liabilities in accordance with the new accounting and disclosure requirements. Effect of Adopting New Revenue Recognition Standard - Statements of Operations   Three Months Ended September 30, 2017   Prior to Adoption   Post Adoption (In millions) CEC   CAC   Eliminations   Total   Total Net revenues $ 986
  $ —
  $ —
  $ 986
  $ 993
Total operating expenses 900
  5
  —
  905
  909
Income/(loss) from operations 86
  (5 )   —
  81
  84
Net income/(loss) (460 )   5
  14
  (441 )   (439 )