Consolidating Financial Information of Guarantors and Issuers Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 26, 2012	Mar. 31, 2013	Mar. 25, 2012	Mar. 31, 2013	Mar. 25, 2012	Sep. 25, 2011
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		$ (68,667)	$ (81,932)	$ 297,947	$ 220,529
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		0	0	0	0
Sale of other assets		0	0	16,058	0
Capital expenditures		(35,829)	(27,468)	(103,262)	(97,355)
Net cash for investing activities		(35,829)	(27,468)	(87,204)	(97,355)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		96,000	155,004	(59,004)	27,890
Term debt borrowings		630,000	0	630,000	0
Note borrowings		500,000	0	500,000	0
Derivative settlement	(50,450)	0	(50,450)	0	(50,450)
Repayments of Long-term Debt		1,131,100	0	1,156,100	23,900
Intercompany term debt (payments) receipts			0	0	0
Distributions (paid) received		(34,820)	(22,151)	(101,482)	(73,070)
Capital (contribution) infusion			0	0	0
Payments of Debt Issuance Costs		23,491	0	23,491	723
Exercise of limited partnership unit options		28	48	57	53
Excess tax benefit from unit-based compensation		(127)	(437)	1,519	(437)
Net cash from (for) financing activities		36,490	82,014	(208,501)	(120,637)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		(786)	(819)	477	(2,473)
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		(68,792)	(28,205)	2,719	64
Balance, beginning of period		78,830	35,524	7,319	7,255	7,319
Balance, end of period		10,038	7,319	10,038	7,319	7,319
Cedar Fair L.P. (Parent) [Member]
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		(117,670)	(184,504)	188,221	113,654
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		65,636	62,103	43,043	(16,818)
Sale of other assets				1,173
Capital expenditures		(17,866)	(8,374)	(43,156)	(40,662)
Net cash for investing activities		47,770	53,729	1,060	(57,480)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		96,000	153,000	(57,000)	31,000
Term debt borrowings		359,022	0	359,022
Note borrowings		294,897		294,897
Derivative settlement			0	0	0
Repayments of Long-term Debt		654,568		669,035	13,831
Intercompany term debt (payments) receipts			0	0	0
Distributions (paid) received		(35,688)	(22,225)	(102,402)	(73,343)
Capital (contribution) infusion				0	0
Payments of Debt Issuance Costs		14,763		14,763	0
Exercise of limited partnership unit options		0	0	0	0
Excess tax benefit from unit-based compensation		0	0	0	0
Net cash from (for) financing activities		44,900	130,775	(189,281)	(56,174)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		0	0	0	0
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		(25,000)	0	0	0
Balance, beginning of period		25,000	0	0	0
Balance, end of period		0	0	0	0
Co-Issuer Subsidiary (Magnum) [Member]
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		(49,663)	10,151	(37,475)	(89,658)
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		58,171	60,369	(49,642)	(6,588)
Sale of other assets				0
Capital expenditures		0	0	(8)	0
Net cash for investing activities		58,171	60,369	(49,650)	(6,588)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		0	0	0	0
Term debt borrowings		256,500	(60,000)	256,500
Note borrowings		205,103		205,103
Derivative settlement			0	0	0
Repayments of Long-term Debt		462,054		472,267	9,763
Intercompany term debt (payments) receipts			(10,320)	104,165	166,023
Distributions (paid) received		868	74	920	273
Capital (contribution) infusion				0	(60,000)
Payments of Debt Issuance Costs		8,538		8,537	0
Exercise of limited partnership unit options		28	48	57	53
Excess tax benefit from unit-based compensation		(127)	(437)	1,519	(437)
Net cash from (for) financing activities		(8,220)	(70,635)	87,460	96,149
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		0	0	0	0
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		288	(115)	335	(97)
Balance, beginning of period		444	512	397	494
Balance, end of period		732	397	732	397
Co-Issuer Subsidiary (Cedar Canada) [Member]
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		(42,030)	(37,239)	16,546	14,102
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		(2,442)	2,208	(2,479)	1,126
Sale of other assets				0
Capital expenditures		(600)	(7,125)	(8,023)	(22,440)
Net cash for investing activities		(3,042)	(4,917)	(10,502)	(21,314)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		0	2,004	(2,004)	(3,110)
Term debt borrowings		14,478	60,000	14,478
Note borrowings		0		0
Derivative settlement			(50,450)	0	(50,450)
Repayments of Long-term Debt		14,478		14,798	306
Intercompany term debt (payments) receipts			0	0	0
Distributions (paid) received		0	0	0	0
Capital (contribution) infusion				0	60,000
Payments of Debt Issuance Costs		190		191	723
Exercise of limited partnership unit options		0	0	0	0
Excess tax benefit from unit-based compensation		0	0	0	0
Net cash from (for) financing activities		(190)	11,554	(2,515)	5,411
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		(786)	(819)	477	(2,473)
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		(46,048)	(31,421)	4,006	(4,274)
Balance, beginning of period		50,173	31,540	119	4,393
Balance, end of period		4,125	119	4,125	119
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		(12,767)	(6,697)	135,165	182,798
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		32,098	11,677	4,568	21,913
Sale of other assets				14,885
Capital expenditures		(17,363)	(11,969)	(52,075)	(34,253)
Net cash for investing activities		14,735	(292)	(32,622)	(12,340)
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		0	0	0	0
Term debt borrowings		0	0	0
Note borrowings		0		0
Derivative settlement			0	0	0
Repayments of Long-term Debt		0		0	0
Intercompany term debt (payments) receipts			10,320	(104,165)	(166,023)
Distributions (paid) received		0	0	0	0
Capital (contribution) infusion				0	0
Payments of Debt Issuance Costs		0		0	0
Exercise of limited partnership unit options		0	0	0	0
Excess tax benefit from unit-based compensation		0	0	0	0
Net cash from (for) financing activities		0	10,320	(104,165)	(166,023)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		0	0	0	0
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		1,968	3,331	(1,622)	4,435
Balance, beginning of period		3,213	3,472	6,803	2,368
Balance, end of period		5,181	6,803	5,181	6,803
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
NET CASH (FOR) FROM OPERATING ACTIVITIES		153,463	136,357	(4,510)	(367)
CASH FLOWS FROM (FOR) INVESTING ACTIVITIES
Investment in joint ventures and affiliates		(153,463)	(136,357)	4,510	367
Sale of other assets				0
Capital expenditures		0	0	0	0
Net cash for investing activities		(153,463)	(136,357)	4,510	367
CASH FLOWS FROM (FOR) FINANCING ACTIVITIES
Net borrowings (payments) on revolving credit loans		0	0	0	0
Term debt borrowings		0	0	0
Note borrowings		0		0
Derivative settlement			0	0	0
Repayments of Long-term Debt		0		0	0
Intercompany term debt (payments) receipts			0	0	0
Distributions (paid) received		0	0	0	0
Capital (contribution) infusion				0	0
Payments of Debt Issuance Costs		0		0	0
Exercise of limited partnership unit options		0	0	0	0
Excess tax benefit from unit-based compensation		0	0	0	0
Net cash from (for) financing activities		0	0	0	0
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS		0	0	0	0
CASH AND CASH EQUIVALENTS
Net increase (decrease) for the period		0	0	0	0
Balance, beginning of period		0	0	0	0
Balance, end of period		$ 0	$ 0	$ 0	$ 0