INCOME TAXES - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Effective Income Tax Rate Reconciliation [Line Items]
NOLs, capital loss, and tax credit carry forwards	$ 106,672	$ 129,444
Nondeductible interest	1,004,828	781,826
Other nondeductible accruals	185,439	160,090
Other	6,654	42,388
Deferred tax assets	1,303,593	1,113,748
Less: Valuation allowance	(44,592)	(93,005)
Net deferred tax assets, noncurrent	1,259,001	1,020,743
Fixed assets and intangibles	(5,231,880)	(5,208,559)
Partnership investments	(183,040)	(185,473)
Other	(76,712)	(82,272)
Deferred tax liability, noncurrent	(5,491,632)	(5,476,304)
Total net deferred tax liabilities	(4,232,631)	(4,455,561)
CSC Holdings
Effective Income Tax Rate Reconciliation [Line Items]
NOLs, capital loss, and tax credit carry forwards	86,332	109,103
Nondeductible interest	1,004,828	781,826
Other nondeductible accruals	183,628	160,090
Other	6,654	42,388
Deferred tax assets	1,281,442	1,093,407
Less: Valuation allowance	(24,252)	(72,664)
Net deferred tax assets, noncurrent	1,257,190	1,020,743
Fixed assets and intangibles	(5,231,880)	(5,208,559)
Partnership investments	(183,040)	(185,473)
Other	(76,712)	(82,272)
Deferred tax liability, noncurrent	(5,491,632)	(5,476,304)
Total net deferred tax liabilities	$ (4,234,442)	$ (4,455,561)