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, 2020	$ (1,203,139)		$ (1,141,030)		$ (985,641)	$ 3,646		$ (62,109)		$ 0		$ (163,866)	$ 2,972	$ 1,859
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Altice USA stockholders	990,311	$ 988,176	990,311	$ 988,176	990,311
Net income attributable to noncontrolling interests	20,621	20,621						20,621	$ 20,621
Distributions to noncontrolling interests	(14,004)	(14,004)						(14,004)	(14,004)
Pension liability adjustments, net of income taxes	(3,513)	(3,513)	(3,513)	(3,513)		(3,513)	$ (3,513)
Foreign currency translation adjustment	(662)	(662)	(662)	(662)		(662)	(662)
Share-based compensation expense (equity classified)	97,511	97,511	97,511	97,511	79,521					17,990	$ 97,511
Redeemable equity vested	23,749	23,749	23,749	23,749	23,749					0	23,749
Change in redeemable equity	2,014		2,014		2,014					0
Class A shares acquired through share repurchase program and retired	(804,928)		(804,928)		(804,692)					0			(236)
Conversion of Class B to Class A shares													16	(16)
Retirement of treasury stock and issuance of common shares pursuant to employee LTIP	13,900		13,900		(149,932)					15		163,866	(49)
Adjustments to Additional Paid in Capital, Other		(212)		4,166					(4,378)		4,166
Ending 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
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						167,410	167,410
Issuance of common shares pursuant to employee long term incentive plan	(79)		(79)							(63)			(16)
Adjustments to retained earnings	212				(4,166)			4,378					(4,166)
Adjustments to Additional Paid in Capital, Other	(2,777)				(2,777)								(2,777)
Ending balance at Dec. 31, 2022	(503,912)	(512,552)	(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
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	8
Share-based compensation expense (equity classified)	19,090	19,090	19,090	19,090						19,090	19,090
Change in redeemable equity	21,106	(21,106)	12,815	$ 12,815				(8,291)	$ (8,291)	12,815	$ 12,815
Class A shares acquired through share repurchase program and retired	(7,808,698)
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