Debt Covenant, Restricted Payments, Maximum

No definition available.

Name:	fun_DebtCovenantRestrictedPaymentsMaximum
Namespace Prefix:	fun_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt Instrument Consolidated Leverage Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument Redemption Percentage Of Original Face Amount

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Line Of Credit Facility Interest Rate Margin Over Libor At Period End

+ References

No definition available.

+ Details

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Namespace Prefix:	fun_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Long Term Debt, Gross, Current Maturities

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Topic 230
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Balance Type:	debit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=fun_RestrictedPaymentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=fun_SeniorSecuredTermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=fun_SeniorSecuredRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=fun_A2017CreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=fun_LineOfCreditFacilityCanadianMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=fun_CanadianRevolvingCreditFacilityCADandUSDMember
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=fun_NotesPayabledue2024Member
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=fun_A2027SeniorNotesat5.375Member
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=fun_NotesPayable2021Member
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Period Type:

- Details

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Period Type:

- Details

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- Details

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- Details

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Long-Term Debt Narrative (Details)	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
Long-Term Debt Narrative (Details)	Apr. 30, 2017 USD ($)	Mar. 25, 2018 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 14, 2018	Jun. 30, 2014 USD ($)
Debt Instrument [Line Items]
Loss on early debt extinguishment		$ 1,100,000		$ 0	$ 1,073,000	$ 23,121,000
Less current portion				(7,500,000)	(5,625,000)
Available borrowings under revolving credit facility				$ 259,600,000	259,600,000
Restricted Payments
Debt Instrument [Line Items]
Debt instrument consolidated leverage ratio				5.00
Debt covenant, restricted payments, maximum				$ 60,000,000
Senior Secured Term Loan
Debt Instrument [Line Items]
Debt instrument, periodic payment	$ 7,500,000
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Maximum outstanding revolving credit balance during period				$ 150,000,000
2017 Credit Agreement
Debt Instrument [Line Items]
Debt instrument, face amount	1,030,000,000.00
Debt instrument consolidated leverage ratio				5.50
2017 Credit Agreement \| Canadian Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 15,000,000
2017 Credit Agreement \| Canadian Revolving Credit Facility CAD and USD
Debt Instrument [Line Items]
Line of credit facility interest rate margin over libor at period end	2.00%
2017 Credit Agreement \| Senior Secured Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount	$ 750,000,000
Unamortized discount	900,000
2017 Credit Agreement \| Senior Secured Term Loan \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, interest rate, effective percentage							1.75%
2017 Credit Agreement \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount	$ 275,000,000
Revolving credit facility outstanding amount				$ 0	0
Credit facility, unused capacity, commitment fee (percent)	0.375%
Standby Letters of Credit
Debt Instrument [Line Items]
Standby letters of credit outstanding, amount				$ 15,400,000	$ 15,400,000
Notes Payable due 2024
Debt Instrument [Line Items]
Debt instrument, face amount								$ 450,000,000
Stated interest rate percentage								5.375%
2027 U.S. fixed rate notes at 5.375%
Debt Instrument [Line Items]
Stated interest rate percentage				5.375%
2027 U.S. fixed rate notes at 5.375% \| Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Stated interest rate percentage	5.375%
Debt instrument, redemption price (percent)	35.00%
Debt instrument, redemption price, percentage of principal amount redeemed	105.375%
Redemption percentage of original face amount	100.00%
Notes Payable Due 2021 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Stated interest rate percentage	5.25%
2013 Credit Agreement \| Canadian Revolving Credit Facility
Debt Instrument [Line Items]
Debt issuance costs, line of credit arrangements, gross	$ 7,700,000
Amortization of debt issuance costs	$ 15,500,000
2029 Notes at 5.250%
Debt Instrument [Line Items]
Stated interest rate percentage				5.25%
2029 Notes at 5.250% \| Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument, face amount			$ 500,000,000
Stated interest rate percentage			5.25%
Debt instrument, redemption price (percent)			35.00%
Debt instrument, redemption price, percentage of principal amount redeemed			105.25%
Redemption percentage of original face amount			100.00%
Subsidiary \| Cedar Fair L.P. (Parent)
Debt Instrument [Line Items]
Parent ownership percentage in subsidiaries that guarantee debt				100.00%