INTERIM FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Quarterly Financial Information [Line Items]
Revenues	$ 9,237,064	$ 9,647,659	$ 10,090,849
Operating expenses	(7,535,124)	(7,845,065)	(7,566,222)
Operating Income (Loss), Total	1,701,940	1,802,594	2,524,627
Net income	79,037	220,889	1,010,932
Comprehensive income attributable to noncontrolling interests	(25,839)	(26,326)	(20,621)
Net income attributable to Altice USA stockholders	53,198	194,563	990,311
Impact from changes in tax rates	23,909	(9,603)	(6,924)
Operating Income (Loss)	1,701,940	1,802,594	2,524,627
Net income attributable to noncontrolling interests	25,839	26,326	20,621
Net income attributable to CSC Holdings, LLC sole member	53,198	194,563	990,311
Other changes in the state rates used to measure deferred taxes, net of federal impact	$ 23,909	$ (9,603)	$ (6,924)
Basic income per share	$ 0.12	$ 0.43	$ 2.16
Diluted income per share	$ 0.12	$ 0.43	$ 2.14
CSC Holdings
Quarterly Financial Information [Line Items]
Revenues	$ 9,237,064	$ 9,647,659	$ 10,090,849
Operating expenses	(7,535,124)	(7,845,065)	(7,566,222)
Operating Income (Loss), Total	1,701,940	1,802,594	2,524,627
Net income	75,988	224,577	1,008,797
Comprehensive income attributable to noncontrolling interests	(25,839)	(26,326)	(20,621)
Net income attributable to Altice USA stockholders	50,149	198,251	988,176
Impact from changes in tax rates	23,300	(10,849)	(7,125)
Distributions to parent	1,793	170	763,435
Operating Income (Loss)	1,701,940	1,802,594	2,524,627
Net income attributable to noncontrolling interests	25,839	26,326	20,621
Net income attributable to CSC Holdings, LLC sole member	50,149	198,251	988,176
Other changes in the state rates used to measure deferred taxes, net of federal impact	23,300	(10,849)	(7,125)
Pay TV [Member]
Quarterly Financial Information [Line Items]
Revenues	3,072,011	3,281,306	3,526,205
Broadband [Member]
Quarterly Financial Information [Line Items]
Revenues	3,824,472	3,930,667	3,925,089
Telephony [Member]
Quarterly Financial Information [Line Items]
Revenues	300,198	332,406	404,813
Business Services and Wholesale [Member]
Quarterly Financial Information [Line Items]
Revenues	1,467,149	1,474,269	1,586,423
Mobile [Member]
Quarterly Financial Information [Line Items]
Revenues	77,012	61,832	51,281
Advertising and News [Member]
Quarterly Financial Information [Line Items]
Revenues	$ 447,742	$ 520,293	$ 550,667