Program Rights and Obligations (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Film, Disclosures [Abstract]
Program rights write-offs	$ 17.3		$ 12.8
Program write-offs, restructuring and other related charges		$ 403.8

The write-off of unamortized costs for program rights (including feature films and episodic series, acquired under license agreements or owned original program rights).

No definition available.

Name:	amcx_ProgramRightsWriteOffs
Namespace Prefix:	amcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration