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COMMITMENTS AND CONTINGENCIES, Legal Matters (Details) (USD $)
 12 Months Ended 0 Months Ended
Dec. 31, 2014
Version
Apr. 15, 2011
Marchese, et al. v. Cablevision Systems Corporation and CSC Holdings, LLC    
Cable Operations Litigation [Abstract]    
Number of versions of complaint dismissed without prejudice by the District Court 3cvc_NumberOfVersionsOfComplaintDismissedWithoutPrejudiceByDistrictCourt
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvc_MarcheseEtAlVCablevisionSystemsCorporationAndCscHoldingsLlcMember		  
Compensation-Related Claims    
Other Legal Matters [Abstract]    
Compensation-related claims sought   $ 11,000,000us-gaap_LossContingencyDamagesSoughtValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvc_CompensationRelatedClaimsMember
Provision for possible loss contingency 0us-gaap_LossContingencyAccrualAtCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= cvc_CompensationRelatedClaimsMember