Subsequent Events - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended				12 Months Ended
	May 31, 2011	Dec. 31, 2012	Dec. 31, 2012 Credit Facilities Term Loans B5-B6 [Member]	Dec. 31, 2012 Credit Facilities Term Loans B5-B6 [Member] Subsequent Event February 2013 CEOC [Member]	Dec. 31, 2012 Credit Facilities Term Loans B6 [Member]		Dec. 31, 2012 Credit Facilities Term Loans B6 [Member] Subsequent Event January 2013 [Member]	Dec. 31, 2012 Original Revolver Commitments [Member] Subsequent Event January 2013 [Member]	Dec. 31, 2012 Senior Notes with Maturity of 2020 Two [Member]	Dec. 31, 2012 Senior Notes with Maturity of 2020 Two [Member] Subsequent Event February 2013 CEOC [Member]	Dec. 31, 2012 Senior Notes With Maturity of 2020 (Three) [Member] [Member] Subsequent Event February 2013 CEOC [Member]	Dec. 09, 2011 Interest rate caps [Member]	Dec. 31, 2010 Interest rate caps [Member]	Dec. 31, 2012 Interest rate caps [Member] Subsequent Event February 2013 CEOC [Member]	Dec. 31, 2012 Revolving Credit Facility [Member] Subsequent Event February 2013 CEOC [Member]	Dec. 31, 2012 Line of Credit [Member] Subsequent Event February 2013 CEOC [Member]
Subsequent Event [Line Items]
Conversion of revolver commitments	$ 423.3				$ 457.8			$ 267.8
Term loan repayments							133.9
Termination of original maturity revolver commitments								267.8
Additional borrowings							133.9
Debt Instrument, Face Value		24,103.1	4,076.5		2,853.8	[1]			750.0	750.0	1,500.0
Debt Instrument, Interest Rate					5.46%	[1]			9.00%	9.00%	9.00%
Maximum principle amount of debt repayment, percentage				20.00%
Extended facility commitments															75.0	650.0
Notional amount of interest rate swap agreements												$ 517.7	$ 554.3	$ 4,664.1
LIBOR cap rate												7.00%	5.00%	4.50%

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