Other Accrued Liabilities - Additional Information (Details) $ in Millions	Sep. 30, 2021 USD ($)
Payables And Accruals [Abstract]
Nonrecurring contractual obligations from temporary COVID-19 park closures.	$ 9.5
Liabilities related to share repurchases not yet settled	$ 5.2

Contractual obligations from temporary Covid Nineteen park closures included in other accrued liabilities.

No definition available.

Name:	seas_ContractualObligationsFromTemporaryCovidNineteenParkClosuresIncludedInOtherAccruedLiabilities
Namespace Prefix:	seas_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant