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Segment Information (Revenues by geographic region) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]    
Revenues, net $ 668,682us-gaap_SalesRevenueNet $ 524,554us-gaap_SalesRevenueNet
United States    
Segment Reporting Information [Line Items]    
Revenues, net 563,825us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 449,150us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe    
Segment Reporting Information [Line Items]    
Revenues, net 75,886us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 49,782us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Other Geographic Locations    
Segment Reporting Information [Line Items]    
Revenues, net $ 28,971us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= amcx_OtherGeographicLocationsMember		 $ 25,622us-gaap_SalesRevenueNet
/ us-gaap_StatementGeographicalAxis
= amcx_OtherGeographicLocationsMember