Document And Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Jun. 29, 2012	Feb. 19, 2013 Class A [Member]	Feb. 19, 2013 Class B [Member]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2012
Entity Registrant Name	AMC Networks Inc.
Entity Central Index Key	0001514991
Current Fiscal Year End Date	--12-31
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding			60,614,883	11,784,408
Entity Public Float		$ 2,029