INTERIM FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Quarterly Financial Information [Line Items]
Revenues	$ 8,954,417	$ 9,237,064	$ 9,647,659
Operating expenses	(7,274,325)	(7,535,124)	(7,845,065)
Operating Income (Loss), Total	1,680,092	1,701,940	1,802,594
Net income (loss)	(78,277)	79,037	220,889
Comprehensive income attributable to noncontrolling interests	(24,641)	(25,839)	(26,326)
Net income attributable to Altice USA stockholders	(102,918)	53,198	194,563
Impact from changes in tax rates	(5,350)	23,909	(9,603)
Operating Income (Loss)	1,680,092	1,701,940	1,802,594
Net income attributable to noncontrolling interests	24,641	25,839	26,326
Net income (loss) attributable to CSC Holdings, LLC sole member	(102,918)	53,198	194,563
Other changes in the state rates used to measure deferred taxes, net of federal impact	$ (5,350)	$ 23,909	$ (9,603)
Basic income (loss) per share	$ (0.22)	$ 0.12	$ 0.43
Diluted income (loss) per share	$ (0.22)	$ 0.12	$ 0.43
CSC Holdings
Quarterly Financial Information [Line Items]
Revenues	$ 8,954,417	$ 9,237,064	$ 9,647,659
Operating expenses	(7,276,139)	(7,535,124)	(7,845,065)
Operating Income (Loss), Total	1,678,278	1,701,940	1,802,594
Net income (loss)	(77,420)	75,988	224,577
Comprehensive income attributable to noncontrolling interests	(24,641)	(25,839)	(26,326)
Net income attributable to Altice USA stockholders	(102,061)	50,149	198,251
Impact from changes in tax rates	(5,350)	23,300	(10,849)
Distributions to parent	8,399	1,793	170
Operating Income (Loss)	1,678,278	1,701,940	1,802,594
Net income attributable to noncontrolling interests	24,641	25,839	26,326
Net income (loss) attributable to CSC Holdings, LLC sole member	(102,061)	50,149	198,251
Other changes in the state rates used to measure deferred taxes, net of federal impact	(5,350)	23,300	(10,849)
Pay TV [Member]
Quarterly Financial Information [Line Items]
Revenues	2,896,600	3,072,011	3,281,306
Broadband [Member]
Quarterly Financial Information [Line Items]
Revenues	3,645,460	3,824,472	3,930,667
Telephony [Member]
Quarterly Financial Information [Line Items]
Revenues	277,938	300,198	332,406
Business Services and Wholesale [Member]
Quarterly Financial Information [Line Items]
Revenues	1,471,764	1,467,149	1,474,269
Mobile [Member]
Quarterly Financial Information [Line Items]
Revenues	117,084	77,012	61,832
Advertising and News [Member]
Quarterly Financial Information [Line Items]
Revenues	$ 486,172	$ 447,742	$ 520,293