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Equity and Long-Term Incentive Plans (Schedule of Share Based Compensation Expense) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 28,363us-gaap_AllocatedShareBasedCompensationExpense $ 20,299us-gaap_AllocatedShareBasedCompensationExpense $ 17,202us-gaap_AllocatedShareBasedCompensationExpense
Restricted shares and units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 28,363us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amcx_RestrictedSharesAndUnitsMember		 20,299us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amcx_RestrictedSharesAndUnitsMember		 17,133us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= amcx_RestrictedSharesAndUnitsMember
Employee Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 $ 0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 $ 69us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember