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Segment Information Segment Information (Long-lived assets by Geographic Location) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]    
Property and equipment, net $ 134,852us-gaap_PropertyPlantAndEquipmentNet $ 133,844us-gaap_PropertyPlantAndEquipmentNet
United States    
Segment Reporting Information [Line Items]    
Property and equipment, net 82,743us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 79,832us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe    
Segment Reporting Information [Line Items]    
Property and equipment, net 32,180us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 33,380us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember
Other Geographic Locations    
Segment Reporting Information [Line Items]    
Property and equipment, net $ 19,929us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= amcx_OtherGeographicLocationsMember		 $ 20,632us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_StatementGeographicalAxis
= amcx_OtherGeographicLocationsMember