Consolidating Financial Information of Guarantors and Issuers (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended					6 Months Ended		12 Months Ended		6 Months Ended		12 Months Ended		6 Months Ended		12 Months Ended		6 Months Ended		12 Months Ended		6 Months Ended		12 Months Ended		6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013	Jun. 03, 2014 Senior Unsecured Notes [Member] Notes Payable Due 2024 [Domain]	Mar. 31, 2013 Senior Unsecured Notes [Member] Notes Payable Due 2021 [Member] [Domain]	Jun. 29, 2014 Senior Unsecured Notes [Member] Notes Payable Due 2021 and 2024 [Member]	Jun. 29, 2014 Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Cedar Fair L.P. (Parent) [Member]	Jun. 29, 2014 Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Cedar Fair L.P. (Parent) [Member]	Jun. 29, 2014 Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 29, 2014 Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 29, 2014 Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 29, 2014 Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 29, 2014 Guarantor Subsidiaries [Member]	Jun. 30, 2013 Guarantor Subsidiaries [Member]	Jun. 29, 2014 Guarantor Subsidiaries [Member]	Jun. 30, 2013 Guarantor Subsidiaries [Member]	Jun. 29, 2014 Eliminations [Member]	Jun. 30, 2013 Eliminations [Member]	Jun. 29, 2014 Eliminations [Member]	Jun. 30, 2013 Eliminations [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Eliminations [Member]	Jun. 30, 2013 Scenario, Previously Reported [Member] Eliminations [Member]	Jun. 30, 2013 Scenario, Adjustment [Member]	Jun. 30, 2013 Scenario, Adjustment [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Eliminations [Member]	Jun. 30, 2013 Scenario, Adjustment [Member] Eliminations [Member]	Jun. 30, 2013 Scenario, Actual [Member]	Jun. 30, 2013 Scenario, Actual [Member]	Jun. 30, 2013 Scenario, Actual [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Actual [Member] Cedar Fair L.P. (Parent) [Member]	Jun. 30, 2013 Scenario, Actual [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Actual [Member] Guarantor Subsidiaries Co Issuer Subsidiary Magnum [Member]	Jun. 30, 2013 Scenario, Actual [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Actual [Member] Co-Issuer Subsidiary (Cedar Canada) [Member]	Jun. 30, 2013 Scenario, Actual [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Actual [Member] Guarantor Subsidiaries [Member]	Jun. 30, 2013 Scenario, Actual [Member] Eliminations [Member]	Jun. 30, 2013 Scenario, Actual [Member] Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash from operating activities	$ 52,237	$ 82,556	$ 294,284	$ 302,706				$ 57,348	$ 34,874	$ 184,623	$ 190,494	$ (48,952)	$ (8,162)	$ (16,592)	$ (48,744)	$ (22,362)	$ (6,326)	$ (1,723)	$ 27,790	$ 76,734	$ 81,364	$ 133,985	$ 146,839	$ (10,531)	$ (19,194)	$ (6,009)	$ (13,673)	$ 82,556	$ 302,706	$ 4,808	$ 210,085	$ (30,371)	$ (47,009)	$ (4,856)	$ 29,440	$ 44,138	$ 140,865	$ 68,837	$ (30,675)													$ 82,556	$ 302,706	$ 34,874	$ 190,494	$ (8,162)	$ (48,744)	$ (6,326)	$ 27,790	$ 81,364	$ 146,839	$ (19,194)	$ (13,673)
Investment in Joint Venture																																								0	0	38,056	27,874	37,167	(30,140)	(18,274)	(15,735)	17,909	(12,174)	(74,858)	30,175
Net Cash Provided by (Used in) Investing Activities	(105,313)	(79,189)	(131,174)	(94,110)				(47,494)	(38,398)	(65,349)	(47,797)	7,432	13,869	37,586	42,406	(11,573)	(3,435)	(17,667)	(4,404)	(42,224)	(42,740)	(93,888)	(103,934)	(11,454)	(8,485)	8,144	19,619	(79,189)	(79,189)	(342)	(19,923)	37,167	(30,148)	(21,709)	(20,139)	(19,447)	(54,075)	(74,858)	30,175													(79,189)	(94,110)	(38,398)	(47,797)	13,869	42,406	(3,435)	(4,404)	(42,740)	(103,934)	(8,485)	19,619
INtercompany Receivable	0	0	0	0				0	0	0	0	7,625	13,869	37,779	(43,948)	0	0	0	0	3,829	(5,384)	(45,923)	(62,033)	(11,454)	(8,485)	8,144	105,981													0	0	0	0	0	0	0	0	19,317	18,148	(19,317)	(18,148)
Intercompany payable	0	0	0	0				(44,310)	7,990	60,253	47,465	38,101	1,089	(17,224)	15,543	2,631	(3,631)	3,130	(912)	(7,861)	(13,933)	(38,015)	43,885	11,439	8,485	(8,144)	(105,981)													0	0	(7,990)	(47,465)	(14,958)	28,405	3,631	912	0	0	19,317	18,148
Cash Dividend Paid to Parent																																								0	0	0	0	0	0	13,173	13,173	0	0	(13,173)	(13,173)
Payments of Distributions to Affiliates	(78,275)	(69,639)	(152,094)	(114,093)				(79,544)	(71,350)	(154,847)	(115,839)	0	1,711	0	1,746	0	(13,173)	0	(13,173)	0	0	0	0	1,269	13,173	2,753	13,173
Repayments of Related Party Debt				0							0				0				0				(86,362)				86,362														0		0		(86,362)		0		0		86,362
Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease)																																								0	0	(38,056)	(27,874)	(37,167)	30,140	18,274	15,735	(17,909)	12,174	74,858	(30,175)
Proceeds from Collection of (Payments to Fund) Long-term Loans to Related Parties				0							0				86,362				0				0				(86,362)														0		0		86,362		0		0		(86,362)
Intercompany Receivable Investing																																								0	0	0	0	13,869	(43,948)	0	0	(5,384)	(62,033)	(8,485)	105,981
Debt Instrument, Interest Rate, Stated Percentage					5.375%	5.25%
Subsidiary ownership percentage guaranteeing notes							100.00%
Subsidiary guarantor ownership percentage							100.00%
Net Cash Provided by (Used in) Financing Activities	(25,943)	(37,180)	(166,813)	(199,952)				(84,854)	(21,476)	(119,274)	(142,697)	37,376	(6,151)	(20,994)	6,338	16,688	(17,278)	16,861	(14,670)	(7,861)	(13,933)	(38,015)	(42,477)	12,708	21,658	(5,391)	(6,446)	(37,180)	(199,952)	(29,466)	(190,162)	(7,240)	77,157	(474)	(585)	0	(86,362)	0	0													(37,180)	(199,952)	(21,476)	(142,697)	(6,151)	6,338	(17,278)	(14,670)	(13,933)	(42,477)	21,658	(6,446)
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries																																								0	0	0	0	0	0	(13,173)	(13,173)	0	0	13,173	13,173
Intercompany Activity, Net, Financing Activities																																								$ 0	$ 0	$ 7,990	$ 47,465	$ 1,089	$ 15,543	$ (3,631)	$ (912)	$ (13,933)	$ 43,885	$ 8,485	$ (105,981)