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Segment Information (Narrative) (Details)
 12 Months Ended
Dec. 31, 2014
segment
Dec. 31, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]      
Number of Operating Segments 2us-gaap_NumberOfOperatingSegments    
Number of Customers   1amcx_NumberofCustomers  
Sales Revenue, Services, Net [Member] | Customer1 [Member] | Customer Concentration Risk [Member]      
Segment Reporting Information [Line Items]      
Concentration Risk, Percentage   10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= amcx_Customer1Member		 11.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= amcx_Customer1Member
Maximum [Member] | Sales Revenue, Services, Net [Member] | Customer1 [Member] | Customer Concentration Risk [Member]      
Segment Reporting Information [Line Items]      
Concentration Risk, Percentage 10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= amcx_Customer1Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember