Long-Term Indebtedness (Details) - USD ($)			1 Months Ended	3 Months Ended		6 Months Ended
	May 03, 2023	Jul. 01, 2022	Mar. 31, 2020	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022	May 02, 2023	Jan. 01, 2023	Apr. 30, 2020	Apr. 30, 2017	Jun. 30, 2016
Summary of Long-term debt
Loss on debt extinguishment				$ 13,982,000	$ 17,533,000	$ 13,982,000	$ 17,533,000
Outstanding amount				2,183,325,000	2,277,910,000	2,183,325,000	2,277,910,000		$ 2,280,531,000
Commitment fee percentage	0.50%
Long-term debt, gross				2,352,325,000	2,477,910,000	2,352,325,000	2,477,910,000		2,380,531,000
Payments of debt issuance costs						19,294,000	12,600,000
Interest Payment				33,216,000	24,713,000	33,216,000	24,713,000		38,484,000
Achievement of leverage ratio of less than 1.25
Summary of Long-term debt
Commitment fee percentage	0.375%
Estimate of Fair Value Measurement
Summary of Long-term debt
Long-term debt, fair value				2,298,700,000	2,368,200,000	$ 2,298,700,000	2,368,200,000		2,284,300,000
Revolving Credit Facility
Summary of Long-term debt
Debt instrument face amount	$ 500,000,000
SOFR
Summary of Long-term debt
Basis spread on variable rate	0.10%					0.10%
Revolving Credit Facility
Summary of Long-term debt
Maximum borrowing capacity				$ 500,000,000.0		$ 500,000,000.0
Interest rate, stated percentage				8.45%		8.45%
Letters of credit outstanding amount				$ 21,000,000.0		$ 21,000,000.0
Long-term line of credit					200,000,000.0		200,000,000.0		100,000,000.0
Commitment fee percentage						0.50%
Long-term debt, gross				169,000,000	200,000,000	$ 169,000,000	200,000,000		100,000,000
Long-term Line of Credit					200,000,000.0		200,000,000.0		100,000,000.0
Available borrowing capacity				310,000,000.0		310,000,000.0
Line of credit facility decrease						169,000,000.0
2025 Notes
Summary of Long-term debt
Long-term debt, gross		$ 365,000,000.0		365,000,000	365,000,000	365,000,000	365,000,000		365,000,000
Periodic payment of interest						12,700,000
Premium percentage on redemption		103.50%
Write off of deferred debt issuance cost		$ 4,900,000
Repayment of notes payable		360,000,000.0				360,000,000
Amortization of debt discount premium		17,500,000
Amortization of financing costs and discounts		$ 12,600,000
2025 Notes | Six Flags Theme Parks Inc.
Summary of Long-term debt
Debt instrument face amount										$ 725,000,000.0
Interest rate, stated percentage										7.00%
Term Loan B [Member]
Summary of Long-term debt
Maximum borrowing capacity				$ 479,000,000.0		$ 479,000,000.0
Interest rate, stated percentage				6.95%		6.95%
Long-term debt, gross				$ 479,000,000	479,000,000	$ 479,000,000	479,000,000		479,000,000
Term Loan B [Member] | SOFR
Summary of Long-term debt
Basis spread on variable rate						1.75%
Term Loan B [Member] | SOFR
Summary of Long-term debt
Basis spread on variable rate						0.10%
2024 Notes
Summary of Long-term debt
Debt instrument face amount												$ 300,000,000.0
Interest rate, stated percentage												4.875%
Principal amount of debt used in conversion								$ 1,000
Purchase price	$ 892,600,000							$ 1,000.50
Long-term debt, gross			$ 949,500,000	56,867,000	949,490,000	$ 56,867,000	949,490,000		949,490,000
Periodic payment of interest						1,400,000
Percentage of principal amount repaid	94.00%
Pre-payment			$ 50,500,000
Percentage of aggregate principal amount of notes tendered	94.00%
Repayment of notes payable	$ 892,600,000
Senior Unsecured 2024 Notes Add-on
Summary of Long-term debt
Debt instrument face amount											$ 700,000,000.0
2027 Notes
Summary of Long-term debt
Debt instrument face amount											$ 500,000,000.0
Interest rate, stated percentage											5.50%
Long-term debt, gross				500,000,000	$ 500,000,000	500,000,000	$ 500,000,000		$ 500,000,000
Periodic payment of interest						13,800,000
2031 Notes
Summary of Long-term debt
Debt instrument face amount	800,000,000			800,000,000.0		800,000,000.0
Net proceeds	$ 784,000,000.0
Interest rate, stated percentage	7.25%
Percentage of offering price	99.248%
Debt Restructuring Costs	$ 12,900,000
Loss on debt extinguishment				100,000
Long-term debt, gross				800,000,000		800,000,000
Interest Payment				$ 30,900,000		30,900,000
Periodic payment of interest						$ 29,000,000.0
Amortization of debt discount premium	13,900,000
Amortization of financing costs and discounts	$ 1,000,000.0
Senior secured debt | Achievement of leverage ratio of less than 1.25 | Minimum
Summary of Long-term debt
Leverage ratio	1.25%
Senior secured debt | Quarter ending June 30, 2023 | Maximum
Summary of Long-term debt
Leverage ratio	4.50%
Senior secured debt | Four fiscal quarter ending September 30, 2023 | Maximum
Summary of Long-term debt
Leverage ratio	4.25%
Senior secured debt | Four fiscal quarter ending June 30, 2024 | Maximum
Summary of Long-term debt
Leverage ratio	4.25%
Senior secured debt | Four fiscal quarter ending September 30, 2024 | Maximum
Summary of Long-term debt
Leverage ratio	3.75%
Senior secured debt | Each four fiscal quarter after September 30, 2024 | Maximum
Summary of Long-term debt
Leverage ratio	3.75%