Consolidated Statements of Stockholders' Deficiency (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		$ (571,519,000)		$ (882,352,000)	$ (571,519,000)	$ (882,352,000)	$ (1,036,995,000)
Net income attributable to AMC Networks’ stockholders	77,615,000	71,367,000	35,379,000	61,517,000	260,797,000	290,738,000	136,530,000
Other comprehensive income					(74,753,000)	3,951,000	3,581,000
Other comprehensive income					(77,077,000)
Non-cash capital distribution, net related to adjustments to liability for uncertain tax positions and net deferred tax assets as a result of the Distribution							(1,148,000)
Non-cash capital distribution related to the utilization of Cablevision tax losses							(1,794,000)
Share-based compensation expense					28,363,000	20,299,000	17,202,000
Proceeds from the exercise of stock options					1,103,000	1,759,000	8,777,000
Treasury stock acquired from forfeitures and acquisition of restricted shares					(22,192,000)	(12,135,000)	(15,989,000)
Conversion of Class B to Class A common stock					(40,000)	0	0
Excess tax benefits on share-based awards					6,798,000	4,975,000	7,484,000
Net loss attributable to noncontrolling interests					22,038,000	0
Issuance of members' interest by subsidiary, net						1,246,000
Non-redeemable net loss attributable to noncontrolling interests					(703,000)
Contributions from noncontrolling interest member					835,000	0	0
Adjustment to issuance of members' interest by subsidiary, net					(312,000)
Ending Balance	(351,909,000)		(571,519,000)		(351,909,000)	(571,519,000)	(882,352,000)
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		64,731,000		36,454,000	64,731,000	36,454,000	5,942,000
Non-cash capital distribution, net related to adjustments to liability for uncertain tax positions and net deferred tax assets as a result of the Distribution							(1,148,000)
Non-cash capital distribution related to the utilization of Cablevision tax losses							(1,794,000)
Share-based compensation expense					28,363,000	20,299,000	17,202,000
Proceeds from the exercise of stock options					1,102,000	1,757,000	8,768,000
Conversion of Class B to Class A common stock					(40,000)
Excess tax benefits on share-based awards					6,798,000	4,975,000	7,484,000
Issuance of members' interest by subsidiary, net						1,246,000
Adjustment to issuance of members' interest by subsidiary, net					(312,000)
Ending Balance	100,642,000		64,731,000		100,642,000	64,731,000	36,454,000
Accumulated Deficit [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(602,686,000)		(893,424,000)	(602,686,000)	(893,424,000)	(1,029,954,000)
Net income attributable to AMC Networks’ stockholders					260,797,000	290,738,000	136,530,000
Ending Balance	(341,889,000)		(602,686,000)		(341,889,000)	(602,686,000)	(893,424,000)
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(29,801,000)		(17,666,000)	(29,801,000)	(17,666,000)	(1,677,000)
Treasury stock acquired from forfeitures and acquisition of restricted shares					(22,192,000)	(12,135,000)	(15,989,000)
Ending Balance	(51,993,000)		(29,801,000)		(51,993,000)	(29,801,000)	(17,666,000)
Accumulated Other Comprehensive Loss [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(4,495,000)		(8,446,000)	(4,495,000)	(8,446,000)	(12,027,000)
Other comprehensive income					(74,753,000)	3,951,000	3,581,000
Ending Balance	(79,248,000)		(4,495,000)		(79,248,000)	(4,495,000)	(8,446,000)
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(571,519,000)		(882,352,000)	(571,519,000)	(882,352,000)	(1,036,995,000)
Net income attributable to AMC Networks’ stockholders					260,797,000	290,738,000	136,530,000
Other comprehensive income					(74,753,000)	3,951,000	3,581,000
Non-cash capital distribution, net related to adjustments to liability for uncertain tax positions and net deferred tax assets as a result of the Distribution							(1,148,000)
Non-cash capital distribution related to the utilization of Cablevision tax losses							(1,794,000)
Share-based compensation expense					28,363,000	20,299,000	17,202,000
Proceeds from the exercise of stock options					1,103,000	1,759,000	8,777,000
Treasury stock acquired from forfeitures and acquisition of restricted shares					(22,192,000)	(12,135,000)	(15,989,000)
Conversion of Class B to Class A common stock					(40,000)
Excess tax benefits on share-based awards					6,798,000	4,975,000	7,484,000
Issuance of members' interest by subsidiary, net						1,246,000
Adjustment to issuance of members' interest by subsidiary, net					(312,000)
Ending Balance	(371,755,000)		(571,519,000)		(371,755,000)	(571,519,000)	(882,352,000)
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		0			0			0
Other comprehensive income					(2,324,000)
Net loss attributable to noncontrolling interests					22,038,000
Non-redeemable net loss attributable to noncontrolling interests					(703,000)
Contributions from noncontrolling interest member					835,000
Ending Balance	19,846,000				19,846,000		0	0
Common Class A [Member] | Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		617,000		612,000	617,000	612,000	586,000
Proceeds from the exercise of stock options					1,000	2,000	9,000
Conversion of Class B to Class A common stock						3,000	17,000
Ending Balance	618,000		617,000		618,000	617,000	612,000
Common Class B [Member] | Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance				118,000		118,000	135,000
Conversion of Class B to Class A common stock						(3,000)	(17,000)
Ending Balance	$ 115,000		$ 115,000		$ 115,000	$ 115,000	$ 118,000