CSC HOLDINGS - CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue (including revenue from affiliates of $214, $459 and $1,471, respectively) (See Note 16)	$ 8,590,467	$ 8,954,417	$ 9,237,064
Costs and Expenses [Abstract]
Programming and other direct costs (including charges from affiliates of $6,491, $11,645 and $13,794, respectively) (See Note 16)	2,637,181	2,896,570	3,029,842
Other operating expenses (including charges from affiliates of $52,766, $45,708 and $57,063 respectively) (See Note 16)	2,681,740	2,711,828	2,646,258
Restructuring, impairments and other operating items	1,687,130	23,696	214,727
Depreciation and amortization	1,696,974	1,642,231	1,644,297
Total operating expenses	8,703,025	7,274,325	7,535,124
Operating Income (Loss), Total	(112,558)	1,680,092	1,701,940
Nonoperating Income (Expense) [Abstract]
Interest expense, net	(1,791,462)	(1,763,166)	(1,639,120)
Loss on derivative contracts, net	0	0	(166,489)
Gain on interest rate swap contracts, net	613	18,632	32,664
Gain (loss) on extinguishment of debt and write-off of deferred financing costs	(23,502)	(12,901)	4,393
Other income (expense), net	(3,051)	(5,675)	4,940
Total other income (expense)	(1,817,397)	(1,762,440)	(1,583,375)
Income (loss) before income taxes	(1,929,955)	(82,348)	118,565
Income Tax Expense (Benefit)	96,908	4,071	(39,528)
Net income (loss)	(1,833,047)	(78,277)	79,037
Comprehensive income attributable to noncontrolling interests	(35,977)	(24,641)	(25,839)
Net income (loss) attributable to CSC Holdings, LLC sole member	(1,869,024)	(102,918)	53,198
Related Party
Revenue (including revenue from affiliates of $214, $459 and $1,471, respectively) (See Note 16)	214	459	1,471
Costs and Expenses [Abstract]
Programming and other direct costs (including charges from affiliates of $6,491, $11,645 and $13,794, respectively) (See Note 16)	6,491	11,645	13,794
Other operating expenses (including charges from affiliates of $52,766, $45,708 and $57,063 respectively) (See Note 16)	52,766	45,708	57,063
CSC Holdings
Revenue (including revenue from affiliates of $214, $459 and $1,471, respectively) (See Note 16)	8,590,467	8,954,417	9,237,064
Costs and Expenses [Abstract]
Programming and other direct costs (including charges from affiliates of $6,491, $11,645 and $13,794, respectively) (See Note 16)	2,637,181	2,896,570	3,029,842
Other operating expenses (including charges from affiliates of $52,766, $45,708 and $57,063 respectively) (See Note 16)	2,691,793	2,713,642	2,646,258
Restructuring, impairments and other operating items	1,687,130	23,696	214,727
Depreciation and amortization	1,696,974	1,642,231	1,644,297
Total operating expenses	8,713,078	7,276,139	7,535,124
Operating Income (Loss), Total	(122,611)	1,678,278	1,701,940
Nonoperating Income (Expense) [Abstract]
Interest expense, net	(1,797,008)	(1,764,696)	(1,639,120)
Loss on derivative contracts, net	0	0	(166,489)
Gain on interest rate swap contracts, net	613	18,632	32,664
Gain (loss) on extinguishment of debt and write-off of deferred financing costs	(23,502)	(12,901)	4,393
Other income (expense), net	(3,051)	(5,675)	4,940
Total other income (expense)	(1,822,943)	(1,763,970)	(1,583,375)
Income (loss) before income taxes	(1,945,554)	(85,692)	118,565
Income Tax Expense (Benefit)	100,175	8,272	(42,577)
Net income (loss)	(1,845,379)	(77,420)	75,988
Comprehensive income attributable to noncontrolling interests	(35,977)	(24,641)	(25,839)
Net income (loss) attributable to CSC Holdings, LLC sole member	$ (1,881,356)	$ (102,061)	$ 50,149