Restricted Group Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Balance Sheet Statements, Captions [Line Items]
Total current assets	$ 730,992	$ 834,794
Total assets	31,701,370	31,923,616
Total current liabilities	2,254,796	2,308,124
Long-term debt, net of current maturities	24,872,015	24,715,554
Liabilities	32,158,202	32,358,034
Noncontrolling interests	12,403	(12,238)
Liabilities and Equity	31,701,370	31,923,616
CSC Holdings
Condensed Balance Sheet Statements, Captions [Line Items]
Total current assets	721,581	834,787
Assets, long term	30,984,830	31,088,822
Total assets	31,706,411	31,923,609
Total current liabilities	2,327,377	2,308,125
Long-term debt, net of current maturities	24,872,015	24,715,554
Liabilities, Other than Long-Term Debt, Noncurrent	4,966,639	5,337,855
Liabilities	32,166,031	32,361,534
Membership equity before noncontrolling interest	(472,023)	(425,687)
Noncontrolling interests	12,403	(12,238)
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest	(459,620)	(437,925)	$ (512,552)	$ (892,773)
Liabilities and Equity	31,706,411	31,923,609
CSC Holdings Restricted Group
Condensed Balance Sheet Statements, Captions [Line Items]
Total current assets	571,347	752,504
Assets, long term	29,427,911	29,645,948
Total assets	29,999,258	30,398,452
Total current liabilities	2,207,017	2,170,465
Long-term debt, net of current maturities	23,344,590	23,296,110
Liabilities, Other than Long-Term Debt, Noncurrent	4,789,839	5,177,112
Liabilities	30,341,446	30,643,687
Membership equity before noncontrolling interest	(342,188)	(245,235)
Noncontrolling interests	0	0
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest	(342,188)	(245,235)
Liabilities and Equity	29,999,258	30,398,452
Unrestricted Group
Condensed Balance Sheet Statements, Captions [Line Items]
Total current assets	220,114	139,472
Assets, long term	1,571,413	1,456,065
Total assets	1,791,527	1,595,537
Total current liabilities	193,377	197,899
Long-term debt, net of current maturities	1,527,425	1,419,444
Liabilities, Other than Long-Term Debt, Noncurrent	187,159	171,961
Liabilities	1,907,961	1,789,304
Membership equity before noncontrolling interest	(129,757)	(180,328)
Noncontrolling interests	13,323	(13,439)
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest	(116,434)	(193,767)
Liabilities and Equity	1,791,527	1,595,537
Consolidation, Eliminations
Condensed Balance Sheet Statements, Captions [Line Items]
Total current assets	(69,880)	(57,189)
Assets, long term	(14,494)	(13,191)
Total assets	(84,374)	(70,380)
Total current liabilities	(73,017)	(60,239)
Long-term debt, net of current maturities	0	0
Liabilities, Other than Long-Term Debt, Noncurrent	(10,359)	(11,218)
Liabilities	(83,376)	(71,457)
Membership equity before noncontrolling interest	(78)	(124)
Noncontrolling interests	(920)	1,201
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest	(998)	1,077
Liabilities and Equity	$ (84,374)	$ (70,380)