Segment Reporting Segment Reporting - Statement of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended						48 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2014
Condensed Statements of Operations by Segment
Management fees									$ 58		$ 57		$ 47
Net revenues	2,131	2,212	2,140	2,033	2,004	2,087	2,069	2,060	8,516		8,220		8,186
Depreciation and amortization									636		701		844
Impairment of goodwill									695		104		195
Impairment of tangible and other intangible assets									299		2,727		430
Income/(loss) from operations	(402)	(328)	127	151	(1,777)	(524)	127	148	(452)		(2,026)		134
Interest expense									(2,670)		(2,252)		(2,100)		(7,000)
Other gains/(losses)									(95)		28		162
Income tax benefit from continuing operations									543		1,517		701
Caesars Entertainment Operating Company [Member]
Condensed Statements of Operations by Segment
Management fees									93	[1]	74	[2]	63	[3]
Net revenues									4,812	[1]	4,985	[2]	4,988	[3]
Depreciation and amortization									291	[1]	384	[2]	497	[3]
Impairment of goodwill									251	[1]	104	[2]	195	[3]
Impairment of tangible and other intangible assets									308	[1]	1,668	[2]	427	[3]
Income/(loss) from operations									(323)	[1]	(1,344)	[2]	(159)	[3]
Interest expense									(2,184)	[1]	(2,069)	[2]	(1,952)	[3]
Other gains/(losses)									(100)	[1]	34	[2]	21	[3]
Income tax benefit from continuing operations									264	[1]	651	[2]	794	[3]
Caesars Entertainment Operating Company [Member] | International [Member]
Condensed Statements of Operations by Segment
Net revenues									337		356		443
Caesars Entertainment Resort Properties [Member]
Condensed Statements of Operations by Segment
Management fees									0		0		0
Net revenues									2,065		1,979		2,003
Depreciation and amortization									200		216		252
Impairment of goodwill									289		0		0
Impairment of tangible and other intangible assets									(12)		1,059		3
Income/(loss) from operations									(32)		(804)		161
Interest expense									(389)		(246)		(232)
Other gains/(losses)									0		15		136
Income tax benefit from continuing operations									28		384		(22)
Caesars Growth Partners, LLC [Member]
Condensed Statements of Operations by Segment
Management fees									1		0		0
Net revenues									1,281		1,040		1,082
Depreciation and amortization									115		83		84
Impairment of goodwill									155		0		0
Impairment of tangible and other intangible assets									0		0		0
Income/(loss) from operations									(139)		(3)		173
Interest expense									(164)		(60)		(51)
Other gains/(losses)									132		28		1
Income tax benefit from continuing operations									214		(113)		(40)
Caesars Interactive Entertainment [Member]
Condensed Statements of Operations by Segment
Management fees									0	[4]	0	[5]	0	[6]
Net revenues									587	[4]	317	[5]	206	[6]
Depreciation and amortization									28	[4]	18	[5]	11	[6]
Impairment of goodwill									0	[4]	0	[5]	0	[6]
Impairment of tangible and other intangible assets									3	[4]	0	[5]	0	[6]
Income/(loss) from operations									21	[4]	(9)	[5]	35	[6]
Interest expense									(6)	[4]	(3)	[5]	(4)	[6]
Other gains/(losses)									0	[4]	(1)	[5]	1	[6]
Income tax benefit from continuing operations									(36)	[4]	(2)	[5]	(11)	[6]
Caesars Interactive Entertainment [Member] | International [Member]
Condensed Statements of Operations by Segment
Net revenues									434		224		192
Parent Company [Member]
Condensed Statements of Operations by Segment
Management fees									0		0		0
Net revenues									101		20		25
Depreciation and amortization									3		0		0
Impairment of goodwill									0		0		0
Impairment of tangible and other intangible assets									0		0		0
Income/(loss) from operations									14		134		(76)
Interest expense									(16)		(9)		17
Other gains/(losses)									(31)		87		125
Income tax benefit from continuing operations									73		597		(20)
Intersubsegment Eliminations [Member]
Condensed Statements of Operations by Segment
Management fees									(36)		(17)		(16)
Net revenues									(330)		(121)		(118)
Depreciation and amortization									(1)		0		0
Impairment of goodwill									0		0		0
Impairment of tangible and other intangible assets									0		0		0
Income/(loss) from operations									7		0		0
Interest expense									89		135		122
Other gains/(losses)									(96)		(135)		(122)
Income tax benefit from continuing operations									$ 0		$ 0		$ 0

[1] Includes foreign net revenues of $337 million.

[2] Includes foreign net revenues of $356 million.

[3] Includes foreign net revenues of $443 million

[4] Includes foreign net revenues of $434 million.

[5] Includes foreign net revenues of $224 million.

[6] Includes foreign net revenues of $192 million.