v3.8.0.1
Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2017
Feb. 15, 2018
Jun. 30, 2017
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2017    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017    
Entity Registrant Name AMC Networks Inc.    
Entity Central Index Key 0001514991    
Current Fiscal Year End Date --12-31    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Public Float     $ 2.8
Common Class A [Member]      
Entity Common Stock, Shares Outstanding   49,239,999  
Common Class B [Member]      
Entity Common Stock, Shares Outstanding   11,484,408