Consolidating Financial Information of Guarantors and Issuers (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Assets [Abstract]
Cash and cash equivalents	$ 985.1	$ 894.6	$ 1,027.0	$ 973.5
Assets held for sale	11.1	11.6
Other current assets	972.8	931.0
Property and equipment, net	16,676.1	17,069.9
Goodwill	3,360.4	3,360.4
Intangible assets other than goodwill	4,244.0	4,363.2
Investments in subsidiaries	92.2	94.2
Restricted cash	346.2	451.1
Assets held for sale	592.3	593.4
Other long-term assets	850.2	840.4
Total assets	28,038.2	28,515.6
Liabilities and Stockholders' Equity/(Deficit)
Interest payable	183.6	191.4
Current portion of long-term debt	42.8	40.4
Liabilities held for sale	9.6	10.1
Other current liabilities	1,437.8	1,360.9
Long-term debt	19,900.8	19,759.5
Deferred credits and other	889.8	901.8
Deferred income taxes	4,966.6	5,198.1
Total liabilities	27,431.0	27,462.2
Total Caesars stockholders' equity/(deficit)	530.2	1,006.7
Non-controlling interests	77.0	46.7
Total equity/(deficit)	607.2	1,053.4	1,394.5	1,672.6
Total liabilities and Stockholder's equity/(deficit)	28,038.2	28,515.6
CEC (Parent) [Member]
Assets [Abstract]
Cash and cash equivalents	8.0	3.9	51.8	136.0
Other current assets	21.7	15.7
Investments in subsidiaries		535.8
Intercompany receivables	529.3	469.0
Other long-term assets	0.8	5.0
Total assets	559.8	1,029.4
Liabilities and Stockholders' Equity/(Deficit)
Other current liabilities	29.6	22.7
Total liabilities	29.6	22.7
Total Caesars stockholders' equity/(deficit)	530.2	1,006.7
Total equity/(deficit)	530.2	1,006.7
Total liabilities and Stockholder's equity/(deficit)	559.8	1,029.4
Subsidiary Issuer [Member]
Assets [Abstract]
Cash and cash equivalents	106.8	16.6	170.3	61.0
Other current assets	336.5	322.4
Property and equipment, net	195.5	205.6
Intangible assets other than goodwill	4.6	4.9
Investments in subsidiaries	12,992.5	13,568.0
Intercompany receivables	1,079.9	1,102.8
Other long-term assets	309.1	324.9
Total assets	15,024.9	15,545.2
Liabilities and Stockholders' Equity/(Deficit)
Interest payable	154.7	174.0
Current portion of long-term debt	11.8	20.2
Other current liabilities	352.0	303.5
Long-term debt	14,664.6	14,446.3
Deferred credits and other	616.2	612.5
Deferred income taxes	462.0	647.7
Intercompany payables	573.6	420.2
Total liabilities	16,834.9	16,624.4
Total Caesars stockholders' equity/(deficit)	(1,810.0)	(1,079.2)
Total equity/(deficit)	(1,810.0)	(1,079.2)
Total liabilities and Stockholder's equity/(deficit)	15,024.9	15,545.2
Guarantor [Member]
Assets [Abstract]
Cash and cash equivalents	302.2	372.5	294.0	344.7
Assets held for sale	11.1	11.6
Other current assets	725.3	672.1
Property and equipment, net	9,156.4	9,499.8
Goodwill	1,526.2	1,526.2
Intangible assets other than goodwill	3,441.7	3,524.2
Investments in subsidiaries	777.7	886.8
Intercompany receivables	585.9	586.0
Assets held for sale	592.3	593.4
Other long-term assets	187.2	187.1
Total assets	17,306.0	17,859.7
Liabilities and Stockholders' Equity/(Deficit)
Interest payable	0.6	0.8
Current portion of long-term debt	19.4	7.0
Liabilities held for sale	9.6	10.1
Other current liabilities	774.3	830.4
Long-term debt	52.8	69.8
Deferred credits and other	140.7	166.0
Deferred income taxes	2,542.9	2,558.8
Intercompany payables	871.7	871.7
Total liabilities	4,412.0	4,514.6
Total Caesars stockholders' equity/(deficit)	12,894.0	13,345.1
Total equity/(deficit)	12,894.0	13,345.1
Total liabilities and Stockholder's equity/(deficit)	17,306.0	17,859.7
Non-Guarantor [Member]
Assets [Abstract]
Cash and cash equivalents	568.1	501.6	510.9	431.8
Other current assets	467.2	418.5
Property and equipment, net	7,324.2	7,364.5
Goodwill	1,834.2	1,834.2
Intangible assets other than goodwill	797.7	834.1
Investments in subsidiaries	886.2	882.9
Restricted cash	346.2	451.1
Intercompany receivables	98.6	98.7
Other long-term assets	348.1	323.4
Total assets	12,670.5	12,709.0
Liabilities and Stockholders' Equity/(Deficit)
Interest payable	28.3	16.6
Current portion of long-term debt	11.6	13.2
Other current liabilities	859.8	702.0
Long-term debt	6,069.6	6,100.7
Deferred credits and other	132.9	123.3
Deferred income taxes	1,961.7	1,991.6
Intercompany payables	848.4	964.6
Total liabilities	9,912.3	9,912.0
Total Caesars stockholders' equity/(deficit)	2,681.2	2,750.3
Non-controlling interests	77.0	46.7
Total equity/(deficit)	2,758.2	2,797.0
Total liabilities and Stockholder's equity/(deficit)	12,670.5	12,709.0
Consolidating/Eliminating Adjustments [Member]
Assets [Abstract]
Other current assets	(577.9)	(497.7)
Investments in subsidiaries	(14,656.4)	(15,873.5)
Intercompany receivables	(2,293.7)	(2,256.5)
Other long-term assets	5.0
Total assets	(17,523.0)	(18,627.7)
Liabilities and Stockholders' Equity/(Deficit)
Other current liabilities	(577.9)	(497.7)
Long-term debt	(886.2)	(857.3)
Intercompany payables	(2,293.7)	(2,256.5)
Total liabilities	(3,757.8)	(3,611.5)
Total Caesars stockholders' equity/(deficit)	(13,765.2)	(15,016.2)
Total equity/(deficit)	(13,765.2)	(15,016.2)
Total liabilities and Stockholder's equity/(deficit)	$ (17,523.0)	$ (18,627.7)