Description of the Business and Significant Accounting Policies - Narrative (Details) $ in Thousands			3 Months Ended		12 Months Ended
	Nov. 02, 2023	Mar. 27, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments (in segments) | segment					1
Depreciation and amortization					$ 157,700	$ 153,000	$ 148,400
Self-insurance reserves			$ 27,766		$ 30,784	27,766
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]					Other accrued liabilities
Advertising expense					$ 58,700	$ 45,500	37,000
Deferred employer's share of social security taxes due to CARES Act		$ 8,200
Taxes due in increments			50.00%	50.00%
Tax benefits from the employee retention credit program due to CARES Act							500
Canada emergency wage subsidy due to CARES Act							$ 5,100
Six Flags
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Payments for merger related costs					$ 22,300
Six Flags Entertainment Corporation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest (in percent)	51.20%
Six Flags Entertainment Corporation | Six Flags
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Limited liability company or limited partnership, members or limited partners, ownership interest (in percent)	48.80%
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average amortization period (in years)					5 years
Revenue recognition, term					12 months
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Weighted average amortization period (in years)					20 years
Revenue recognition, term					16 months