CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	CSC Holdings	Parent [Member]	Parent [Member] CSC Holdings	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	AOCI Attributable to Parent [Member] CSC Holdings	Noncontrolling Interests	Noncontrolling Interests CSC Holdings	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] CSC Holdings	Treasury Stock, Common	Common Class A Common Stock	Common Class B Common Stock
Beginning balance at Dec. 31, 2021	$ (870,902)		$ (819,788)		$ (848,836)	$ 6,497		$ (51,114)		$ 18,005		$ 0	$ 2,703	$ 1,843
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Altice USA stockholders	194,563	$ 198,251	194,563	$ 198,251	194,563
Net income attributable to noncontrolling interests	26,326	26,326						26,326	$ 26,326
Distributions to noncontrolling interests	(3,913)	(3,913)						(3,913)	(3,913)
Pension liability adjustments, net of income taxes	14,989	14,989	14,989	14,989		14,989	$ 14,989
Foreign currency translation adjustment	291	291	291	291		291	291
Share-based compensation expense (equity classified)	167,410	167,410	167,410	167,410	0					167,410	$ 167,410
Adjustments to Additional Paid in Capital, Amount of Redeemable Preferred Stock Vested	79		79		0					63			16
Adjustments to retained earnings										(2,777)
Ending balance at Dec. 31, 2022	(503,912)		(475,211)		(654,273)	(8,201)		(28,701)		182,701		0	2,719	1,843
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Altice USA stockholders	53,198	50,149	53,198	50,149
Net income attributable to noncontrolling interests	25,839	25,839						25,839	25,839
Distributions to noncontrolling interests	(1,077)	(1,077)						(1,077)	(1,077)
Pension liability adjustments, net of income taxes	3,961	3,961	3,961	3,961		3,961	3,961
Foreign currency translation adjustment	(697)	(697)	(689)	(689)		(689)	(689)		8
Share-based compensation expense (equity classified)	19,090	19,090	19,090	19,090						19,090	19,090
Noncontrolling Interest, Change in Redemption Value	21,106	(21,106)	12,815	12,815				(8,291)	(8,291)	12,815	12,815
Adjustments to retained earnings	(2,777)				(2,777)			0					0
Adjustments to Additional Paid in Capital, Other	(1,792)		(1,792)							(1,790)			(1)	(1)
Ending balance at Dec. 31, 2023	(434,418)	(437,925)	(422,180)		(601,075)	(12,851)		(12,238)		187,186		0	2,718	1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Altice USA stockholders	(102,918)	(102,061)	(102,918)	(102,061)
Net income attributable to noncontrolling interests	24,641	24,641						24,641	24,641
Pension liability adjustments, net of income taxes	(9,449)	(9,449)	(9,449)	(9,449)		(9,449)	(9,449)
Foreign currency translation adjustment	(424)	(424)	(424)	(424)		(424)	$ (424)	0	$ 0
Share-based compensation expense (equity classified)	49,305	49,305	49,305	$ 49,305						49,305	$ 49,305
Adjustments to Additional Paid in Capital, Other	(2,467)		(2,467)							(2,538)		(10)	81
Ending balance at Dec. 31, 2024	$ (456,832)	$ (459,620)	$ (469,235)		$ (703,993)	$ (3,826)		$ 12,403		$ 233,953		$ (10)	$ 2,799	$ 1,842