CSC HOLDINGS - CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 256,534	$ 302,058
Restricted cash	290	280
Accounts receivable, trade (less allowance for credit losses of $24,232 and $21,915, respectively)	332,271	357,597
Prepaid expenses and other current assets ($905 and $407 due from affiliates, respectively)	141,897	174,859
Total current assets	730,992	834,794
Property, plant and equipment, net of accumulated depreciation of $8,762,014 and $8,162,442, respectively	8,414,632	8,117,757
Right-of-use operating lease assets	248,013	255,545
Other assets	94,403	195,114
Finite-Lived Intangible Assets, Net	960,805	1,259,335
Indefinite-lived cable franchise rights	13,211,308	13,216,355	$ 13,216,355
Goodwill	8,041,217	8,044,716	8,208,773
Total assets	31,701,370	31,923,616
Liabilities, Current [Abstract]
Accounts payable	971,499	936,950
Interest payable	406,208	274,507
Accrued employee related costs	191,990	182,146
Deferred revenue	74,167	85,018
Long-Term Debt, Current Maturities	185,473	359,407
Other Accrued Liabilities, Current	425,459	470,096
Liabilities, Current, Total	2,254,796	2,308,124
Other liabilities	320,435	221,249
Deferred tax liability	4,455,840	4,848,460
Right-of-use operating lease liability	255,116	264,647
Long-term debt, net of current maturities	24,872,015	24,715,554
Liabilities, Total	32,158,202	32,358,034
Limited Liability Company (LLC) Members' Equity [Abstract]
Accumulated other comprehensive income	(3,826)	(12,851)
Noncontrolling interests	12,403	(12,238)
Total stockholders' deficiency	(456,832)	(434,418)	$ (503,912)	$ (870,902)
Total liabilities and member's deficiency	31,701,370	31,923,616
Related Party
Current Assets:
Prepaid expenses and other current assets ($905 and $407 due from affiliates, respectively)	314	407
Liabilities, Current [Abstract]
Other Accrued Liabilities, Current	26,944	71,523
CSC Holdings
Current Assets:
Cash and cash equivalents	246,326	302,051
Restricted cash	290	280
Accounts receivable, trade (less allowance for credit losses of $24,232 and $21,915, respectively)	332,271	357,597
Prepaid expenses and other current assets ($905 and $407 due from affiliates, respectively)	142,694	174,859
Total current assets	721,581	834,787
Property, plant and equipment, net of accumulated depreciation of $8,762,014 and $8,162,442, respectively	8,414,632	8,117,757
Right-of-use operating lease assets	248,013	255,545
Other assets	108,855	195,114
Finite-Lived Intangible Assets, Net	960,805	1,259,335
Indefinite-lived cable franchise rights	13,211,308	13,216,355
Goodwill	8,041,217	8,044,716
Total assets	31,706,411	31,923,609
Liabilities, Current [Abstract]
Accounts payable		936,950
Interest payable		274,507
Accrued employee related costs		182,146
Deferred revenue		85,018
Long-Term Debt, Current Maturities	185,473	359,407
Other Accrued Liabilities, Current	407,540	470,097
Liabilities, Current, Total	2,327,377	2,308,125
Other liabilities	255,683	221,249
Deferred tax liability	4,455,840	4,851,959
Right-of-use operating lease liability	255,116	264,647
Long-term debt, net of current maturities	24,872,015	24,715,554
Liabilities, Total	32,166,031	32,361,534
Limited Liability Company (LLC) Members' Equity [Abstract]
Member's deficiency (100 membership units issued and outstanding)	(468,197)	(412,836)
Accumulated other comprehensive income	(3,826)	(12,851)
Total member's deficiency	(472,023)	(425,687)
Noncontrolling interests	12,403	(12,238)
Total stockholders' deficiency	(459,620)	(437,925)
Total liabilities and member's deficiency	31,706,411	31,923,609
CSC Holdings | Related Party
Current Assets:
Prepaid expenses and other current assets ($905 and $407 due from affiliates, respectively)	905	407
Liabilities, Current [Abstract]
Accounts payable	971,499
Interest payable	406,208
Accrued employee related costs	191,990
Deferred revenue	74,167
Notes Payable	90,500	0
Other Accrued Liabilities, Current	$ 26,944	$ 71,523