Segment Reporting Segment Reporting - Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Assets	$ 23,535		$ 24,689
Liabilities	28,277		26,593
Caesars Entertainment Operating Company [Member]
Segment Reporting Information [Line Items]
Assets	11,355	[1]	12,593	[2]
Liabilities	19,773	[1]	20,478	[2]
Caesars Entertainment Operating Company [Member] | International [Member]
Segment Reporting Information [Line Items]
Assets	312		301
Liabilities	183		169
Caesars Entertainment Resort Properties [Member]
Segment Reporting Information [Line Items]
Assets	7,172		7,372
Liabilities	6,334		6,219
Caesars Growth Partners, LLC [Member]
Segment Reporting Information [Line Items]
Assets	4,185		5,091
Liabilities	2,979		1,676
Caesars Interactive Entertainment [Member]
Segment Reporting Information [Line Items]
Assets	546	[3]	427	[4]
Liabilities	367	[3]	251	[4]
Caesars Interactive Entertainment [Member] | International [Member]
Segment Reporting Information [Line Items]
Assets	305		183
Liabilities	172		54
Parent Company [Member]
Segment Reporting Information [Line Items]
Assets	2,752		785
Liabilities	(583)		7,332
Intersubsegment Eliminations [Member]
Segment Reporting Information [Line Items]
Assets	(2,475)		(1,579)
Liabilities	$ (593)		$ (9,363)

[1] Includes foreign assets of $312 million and foreign liabilities of $183 million.

[2] Includes foreign assets of $301 million and foreign liabilities of $169 million.

[3] Includes foreign assets of $305 million and foreign liabilities of $172 million

[4] Includes foreign assets of $183 million and foreign liabilities of $54 million.