Commitments and Contingencies (Details) (USD $)	12 Months Ended				1 Months Ended		12 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2012 park	Dec. 31, 2011	Dec. 31, 2010	Apr. 01, 1998	Dec. 31, 2011 Term Loan B	May 31, 2012 Six Flags Over Georgia (SFOG)	Dec. 31, 2012 Six Flags Over Georgia (SFOG) multiplier	May 31, 2012 Six Flags Over Texas (SFOT)	Dec. 31, 2012 Six Flags Over Texas (SFOT) multiplier	Dec. 31, 2012 Obligations guaranteed of general partner	Dec. 31, 2012 Obligations guaranteed of general partner Minimum	Dec. 31, 2012 Obligations guaranteed of subsidiaries Y	Dec. 31, 2012 Obligations guaranteed of subsidiaries Maximum
Details of commitments and contingencies
Acquisition of capital stock of the former Six Flags Entertainment Corporation, paid in cash				$ 976,000,000
Annual distributions by general partners to limited partners in partnership parks											66,300,000
Share of Partnership Parks' annual distributions paid to Six Flags Entertainment Corporation										28,800,000
Percentage of capital expenditures to Partnership Parks' revenues										6.00%
Percentage of amount purchased to total limited partnership units outstanding per annum													5.00%
Weighted average period of the park's EBITDA for calculation of value of purchase price (in years)												4
Specified multiple for purchase price valuation (in multipliers)							8.0		8.5
Specified price for purchase of partnership parks							250,000,000		374,800,000
Limited partner interests owned (as a percent)							30.50%		53.00%
Remaining redeemable units (as a percent)							69.50%		47.00%
Current redemption value for limited partnership units	348,200,000
Units purchased in partnership parks (in shares)						0.79		0.05
Units purchased pursuant to annual offer								2,000,000
Accordion feature available for borrowing for future put obligations					300,000,000
Capital expenditures incurred on parks	6,200,000
Estimated capital expenditures on partnership parks in the next fiscal year	16,000,000
Number of partnerships (in parks)	2
Cash generated from operating activities by partnerships, after deduction of capital expenditures and excluding the impact of short-term intercompany advances	52,800,000
Total loans receivable from the partnerships that own partnership parks	239,300,000	239,300,000
Operating Leases
Rental expense under the rent agreements	6,000,000	5,700,000	4,400,000
Total rental expense from continuing operations	12,100,000	11,900,000	10,900,000
Future minimum obligations under non-cancellable operating leases
2013	6,581,000
2014	6,154,000
2015	5,841,000
2016	5,794,000
2017	10,614,000
2018 and thereafter	159,147,000
Total	$ 194,131,000