Commitments and Contingencies (Details) (USD $)	6 Months Ended	0 Months Ended		3 Months Ended
	Jun. 30, 2011	Apr. 30, 2010 Six Flags years	Jun. 30, 2011 Six Flags	Mar. 31, 2011 Sheen	Jun. 30, 2011 Maximum	Jun. 30, 2011 Minimum
Commitments [Line Items]
Undiscounted estimate future cash flow			$ 1,000,000,000
Net present value			410,000,000
Multiple draw credit facility, amount		150,000,000
Multiple draw credit facility, time period - in years		5
Multiple draw credit facility new loan, time period - in years		5
Loss Contingencies [Line Items]
Loss Contingency Range Of Possible Loss Portion Not Accrued					130,000,000	0
Loss Contingency, Damages Sought, Value				100,000,000
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	71,000,000
Unrecognized Tax Benefits That Would Impact Effective Tax Rate	33,000,000
Unrecognized Tax Benefits Interest On Income Taxes Accrued	33,000,000
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Estimated Range Of Change					$ 32,000,000	$ 0