Condensed Consolidating Financial Information of Guarantors and Issuers - Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 2,095.4	$ 1,757.5	$ 1,122.5	$ 891.2
Restricted cash	70.6	833.6
Receivables, less allowance for doubtful accounts	543.9	580.5
Deferred income taxes	174.7	114.9
Prepayments and other current assets	191.6	150.0
Inventories	49.7	52.0
Intercompany receivables	0	0
Assets held for sale	5.2	5.1
Total current assets	3,131.1	3,493.6
Property and equipment, net of accumulated depreciation	15,676.2	15,701.7
Goodwill	3,165.8	3,160.3
Intangible assets other than goodwill	3,921.9	3,985.7
Investments in subsidiaries	0	0
Investments in and advances to non-consolidated affiliates	118.6	100.4
Restricted cash	295.9	364.6
Deferred charges and other	722.9	720.6
Intercompany receivables	0	0
Assets held for sale	442.6	471.2
Total assets	27,475.0	27,998.1
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	340.4	376.2
Interest payable	386.4	233.7
Accrued expenses	1,030.7	1,094.7
Current portion of long-term debt	143.0	879.9
Intercompany payables	0	0
Liabilities held for sale	3.5	3.8
Total current liabilities	1,904.0	2,588.3
Long-term debt	21,134.1	20,532.2
Accumulated losses of subsidiaries in excess of investment	0	0
Deferred credits and other	841.0	823.0
Deferred income taxes	4,106.2	4,334.1
Intercompany payables	0	0
Liabilities held for sale	49.7	52.1
Total liabilities	28,035.0	28,329.7
Total Caesars stockholders’ (deficit)/equity	(637.1)	(411.7)
Non-controlling interests	77.1	80.1
Total (deficit)/equity	(560.0)	(331.6)	849.2	1,053.4
Total liabilities and stockholder's equity	27,475.0	27,998.1
CEC (Parent Guarantor) [Member]
Assets
Cash and cash equivalents	80.8	7.4	11.1	3.9
Restricted cash	0	0
Receivables, less allowance for doubtful accounts	0	0.1
Deferred income taxes	0	0
Prepayments and other current assets	5.1	5.0
Inventories	0	0
Intercompany receivables	11.1	29.6
Assets held for sale	0	0
Total current assets	97.0	42.1
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0	0
Intangible assets other than goodwill	0	0
Investments in subsidiaries	0	0
Investments in and advances to non-consolidated affiliates	0	0
Restricted cash	0	0
Deferred charges and other	6.2	7.5
Intercompany receivables	525.1	563.1
Assets held for sale	0	0
Total assets	628.3	612.7
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	3.8	3.9
Interest payable	0	0
Accrued expenses	0	3.7
Current portion of long-term debt	0	0
Intercompany payables	0.6	15.9
Liabilities held for sale	0	0
Total current liabilities	4.4	23.5
Long-term debt	0	0
Accumulated losses of subsidiaries in excess of investment	1,183.1	925.4
Deferred credits and other	0	4.1
Deferred income taxes	0	0
Intercompany payables	55.0	55.0
Liabilities held for sale	0	0
Total liabilities	1,242.5	1,008.0
Total Caesars stockholders’ (deficit)/equity	(614.2)	(395.3)
Non-controlling interests	0	0
Total (deficit)/equity	(614.2)	(395.3)
Total liabilities and stockholder's equity	628.3	612.7
Subsidiary Issuer [Member]
Assets
Cash and cash equivalents	1,283.9	911.9	355.9	16.6
Restricted cash	0	0
Receivables, less allowance for doubtful accounts	20.9	19.5
Deferred income taxes	77.4	17.4
Prepayments and other current assets	12.7	8.3
Inventories	0.2	0.3
Intercompany receivables	278.5	295.5
Assets held for sale	0	0
Total current assets	1,673.6	1,252.9
Property and equipment, net of accumulated depreciation	187.7	189.9
Goodwill	0	0
Intangible assets other than goodwill	4.0	4.2
Investments in subsidiaries	11,581.9	11,669.6
Investments in and advances to non-consolidated affiliates	0	0
Restricted cash	0	0
Deferred charges and other	316.8	298.4
Intercompany receivables	1,073.9	1,089.6
Assets held for sale	0	0
Total assets	14,837.9	14,504.6
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	66.5	75.9
Interest payable	361.7	176.0
Accrued expenses	158.2	164.7
Current portion of long-term debt	125.9	126.2
Intercompany payables	81.9	88.1
Liabilities held for sale	0	0
Total current liabilities	794.2	630.9
Long-term debt	15,880.5	15,257.0
Accumulated losses of subsidiaries in excess of investment	0	0
Deferred credits and other	512.5	535.0
Deferred income taxes	223.9	422.6
Intercompany payables	583.5	614.5
Liabilities held for sale	0	0
Total liabilities	17,994.6	17,460.0
Total Caesars stockholders’ (deficit)/equity	(3,156.7)	(2,955.4)
Non-controlling interests	0	0
Total (deficit)/equity	(3,156.7)	(2,955.4)
Total liabilities and stockholder's equity	14,837.9	14,504.6
Subsidiary Guarantors of Parent and Subsidiary Guaranteed Debt [Member]
Assets
Cash and cash equivalents	299.5	353.8	303.1	372.5
Restricted cash	5.1	0
Receivables, less allowance for doubtful accounts	304.9	348.0
Deferred income taxes	75.6	75.7
Prepayments and other current assets	107.7	66.8
Inventories	30.9	31.7
Intercompany receivables	127.8	136.8
Assets held for sale	0	0
Total current assets	951.5	1,012.8
Property and equipment, net of accumulated depreciation	8,502.3	8,534.6
Goodwill	1,330.9	1,331.0
Intangible assets other than goodwill	3,140.8	3,183.0
Investments in subsidiaries	913.0	920.3
Investments in and advances to non-consolidated affiliates	3.1	3.0
Restricted cash	0	0
Deferred charges and other	187.1	184.8
Intercompany receivables	586.0	585.9
Assets held for sale	0	0
Total assets	15,614.7	15,755.4
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	128.2	156.5
Interest payable	0.5	0.4
Accrued expenses	386.1	434.7
Current portion of long-term debt	10.9	10.7
Intercompany payables	291.7	284.8
Liabilities held for sale	0	0
Total current liabilities	817.4	887.1
Long-term debt	64.6	64.8
Accumulated losses of subsidiaries in excess of investment	0	0
Deferred credits and other	140.4	160.2
Deferred income taxes	2,064.9	2,188.9
Intercompany payables	871.7	871.7
Liabilities held for sale	0	0
Total liabilities	3,959.0	4,172.7
Total Caesars stockholders’ (deficit)/equity	11,655.7	11,582.7
Non-controlling interests	0	0
Total (deficit)/equity	11,655.7	11,582.7
Total liabilities and stockholder's equity	15,614.7	15,755.4
Subsidiary Non-Guarantors of Parent and Subsidiary Guaranteed Debt [Member]
Assets
Cash and cash equivalents	431.2	484.4	456.4	498.2
Restricted cash	65.5	833.6
Receivables, less allowance for doubtful accounts	218.1	212.9
Deferred income taxes	21.7	21.8
Prepayments and other current assets	66.1	69.9
Inventories	18.6	20.0
Intercompany receivables	114.5	97.2
Assets held for sale	5.2	5.1
Total current assets	940.9	1,744.9
Property and equipment, net of accumulated depreciation	6,989.8	6,977.2
Goodwill	1,834.9	1,829.3
Intangible assets other than goodwill	777.1	798.5
Investments in subsidiaries	906.5	790.7
Investments in and advances to non-consolidated affiliates	115.5	97.4
Restricted cash	295.9	364.6
Deferred charges and other	218.0	236.6
Intercompany receivables	153.6	153.8
Assets held for sale	442.6	471.2
Total assets	12,674.8	13,464.2
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	141.9	139.9
Interest payable	24.2	57.3
Accrued expenses	486.4	491.6
Current portion of long-term debt	6.2	743.0
Intercompany payables	157.7	170.3
Liabilities held for sale	3.5	3.8
Total current liabilities	819.9	1,605.9
Long-term debt	6,115.2	6,122.9
Accumulated losses of subsidiaries in excess of investment	0	0
Deferred credits and other	188.1	123.7
Deferred income taxes	1,857.5	1,714.7
Intercompany payables	828.4	851.2
Liabilities held for sale	49.7	52.1
Total liabilities	9,858.8	10,470.5
Total Caesars stockholders’ (deficit)/equity	2,738.9	2,913.6
Non-controlling interests	77.1	80.1
Total (deficit)/equity	2,816.0	2,993.7
Total liabilities and stockholder's equity	12,674.8	13,464.2
Subsidiary Non-Guarantors of Parent-Only Guaranteed Debt [Member]
Assets
Cash and cash equivalents	730.7	838.2	759.5	870.7
Restricted cash	70.6	833.6
Receivables, less allowance for doubtful accounts	523.0	560.9
Deferred income taxes	97.3	97.5
Prepayments and other current assets	173.8	136.7
Inventories	49.5	51.7
Intercompany receivables	242.3	234.0
Assets held for sale	5.2	5.1
Total current assets	1,892.4	2,757.7
Property and equipment, net of accumulated depreciation	15,492.1	15,511.8
Goodwill	3,165.8	3,160.3
Intangible assets other than goodwill	3,917.9	3,981.5
Investments in subsidiaries	1,819.5	1,711.0
Investments in and advances to non-consolidated affiliates	118.6	100.4
Restricted cash	295.9	364.6
Deferred charges and other	405.1	421.4
Intercompany receivables	739.6	739.7
Assets held for sale	442.6	471.2
Total assets	28,289.5	29,219.6
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	270.1	296.4
Interest payable	24.7	57.7
Accrued expenses	872.5	926.3
Current portion of long-term debt	17.1	753.7
Intercompany payables	449.4	455.1
Liabilities held for sale	3.5	3.8
Total current liabilities	1,637.3	2,493.0
Long-term debt	6,179.8	6,187.7
Accumulated losses of subsidiaries in excess of investment	0	0
Deferred credits and other	328.5	283.9
Deferred income taxes	3,922.4	3,903.6
Intercompany payables	1,700.1	1,722.9
Liabilities held for sale	49.7	52.1
Total liabilities	13,817.8	14,643.2
Total Caesars stockholders’ (deficit)/equity	14,394.6	14,496.3
Non-controlling interests	77.1	80.1
Total (deficit)/equity	14,471.7	14,576.4
Total liabilities and stockholder's equity	28,289.5	29,219.6
Consolidating/ Eliminating Adjustments [Member]
Assets
Cash and cash equivalents	0	0	(4.0)	0
Restricted cash	0	0
Receivables, less allowance for doubtful accounts	0	0
Deferred income taxes	0	0
Prepayments and other current assets	0	0
Inventories	0	0
Intercompany receivables	(531.9)	(559.1)
Assets held for sale	0	0
Total current assets	(531.9)	(559.1)
Property and equipment, net of accumulated depreciation	(3.6)	0
Goodwill	0	0
Intangible assets other than goodwill	0	0
Investments in subsidiaries	(13,401.4)	(13,380.6)
Investments in and advances to non-consolidated affiliates	0	0
Restricted cash	0	0
Deferred charges and other	(5.2)	(6.7)
Intercompany receivables	(2,338.6)	(2,392.4)
Assets held for sale	0	0
Total assets	(16,280.7)	(16,338.8)
Liabilities and Stockholders’ (Deficit)/Equity
Accounts payable	0	0
Interest payable	0	0
Accrued expenses	0	0
Current portion of long-term debt	0	0
Intercompany payables	(531.9)	(559.1)
Liabilities held for sale	0	0
Total current liabilities	(531.9)	(559.1)
Long-term debt	(926.2)	(912.5)
Accumulated losses of subsidiaries in excess of investment	(1,183.1)	(925.4)
Deferred credits and other	0	0
Deferred income taxes	(40.1)	7.9
Intercompany payables	(2,338.6)	(2,392.4)
Liabilities held for sale	0	0
Total liabilities	(5,019.9)	(4,781.5)
Total Caesars stockholders’ (deficit)/equity	(11,260.8)	(11,557.3)
Non-controlling interests	0	0
Total (deficit)/equity	(11,260.8)	(11,557.3)
Total liabilities and stockholder's equity	$ (16,280.7)	$ (16,338.8)