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Commitments (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract] |  |
Decrease in contractual obligations not reflected in the balance sheet | $ (96,700) |
Contractual obligations not reflected in the balance sheet | $ 309,100 | $ 405,800

X
- Definition The amount of the fixed and determinable portion of unrecorded balance sheet arrangements consisting of purchase obligations of long-term program rights obligations that have not yet met the criteria to be recorded on the balance sheet, operating leases and guarantees. + References No definition available. + Details
Name: | amcx_ContractualObligationsNotReflectedInBalanceSheet
Namespace Prefix: | amcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The increase (decrease) during the reporting period for the amount of fixed and determinable portion of unrecorded balance sheet arrangements consisting of purchase obligations of long-term program rights obligations that have not yet met the criteria to be recorded on the balance sheet, operating leases and guarantees. + References No definition available. + Details
Name: | amcx_IncreaseDecreaseInContractualObligationsNotReflectedInBalanceSheet
Namespace Prefix: | amcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration