CSC HOLDINGS - CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 302,058	$ 305,484
Restricted cash	280	267
Accounts receivable, trade (less allowance for doubtful accounts of $21,915 and $20,767, respectively)	357,597	365,992
Prepaid expenses and other current assets ($407 and $572 due from affiliates, respectively)	174,859	130,684
Derivative contracts	0	263,873
Investment securities pledged as collateral	0	1,502,145
Total current assets	834,794	2,568,445
Property, plant and equipment, net of accumulated depreciation of $8,162,442 and $7,785,397, respectively	8,117,757	7,500,780
Right-of-use operating lease assets	255,545	250,601
Other assets	195,114	259,681
Finite-Lived Intangible Assets, Net	1,259,335	1,660,331
Indefinite-lived cable franchise rights	13,216,355	13,216,355
Goodwill	8,044,716	8,208,773
Total assets	31,923,616	33,664,966
Liabilities, Current [Abstract]
Accounts payable	936,950	1,213,806
Interest payable	274,507	252,351
Accrued employee related costs	182,146	139,328
Deferred revenue	85,018	80,559
Long-Term Debt, Current Maturities	359,407	2,075,077
Other Accrued Liabilities, Current	470,096	278,580
Liabilities, Current, Total	2,308,124	4,039,701
Other liabilities	221,249	274,623
Deferred tax liability	4,848,460	5,081,661
Right-of-use operating lease liability	264,647	260,237
Long-term debt, net of current maturities	24,715,554	24,512,656
Liabilities, Total	32,358,034	34,168,878
Limited Liability Company (LLC) Members' Equity [Abstract]
Accumulated other comprehensive income	(12,851)	(8,201)
Noncontrolling interests	(12,238)	(28,701)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(434,418)	(503,912)
Total liabilities and member's deficiency	31,923,616	33,664,966
Related Party
Current Assets:
Prepaid expenses and other current assets ($407 and $572 due from affiliates, respectively)	407	572
Liabilities, Current [Abstract]
Other Accrued Liabilities, Current	71,523	20,857
CSC Holdings
Current Assets:
Cash and cash equivalents	302,051	305,477
Restricted cash	280	267
Accounts receivable, trade (less allowance for doubtful accounts of $21,915 and $20,767, respectively)	357,597	365,992
Prepaid expenses and other current assets ($407 and $572 due from affiliates, respectively)	174,859	130,684
Derivative contracts	0	263,873
Investment securities pledged as collateral	0	1,502,145
Total current assets	834,787	2,568,438
Property, plant and equipment, net of accumulated depreciation of $8,162,442 and $7,785,397, respectively	8,117,757	7,500,780
Right-of-use operating lease assets	255,545	250,601
Other assets	195,114	259,681
Finite-Lived Intangible Assets, Net	1,259,335	1,660,331
Indefinite-lived cable franchise rights	13,216,355	13,216,355
Goodwill	8,044,716	8,208,773
Total assets	31,923,609	33,664,959
Liabilities, Current [Abstract]
Accounts payable	936,950	1,213,806
Interest payable	274,507	252,351
Accrued employee related costs	182,146	139,328
Deferred revenue	85,018	80,559
Long-Term Debt, Current Maturities	359,407	2,075,077
Other Accrued Liabilities, Current	470,097	278,580
Liabilities, Current, Total	2,308,125	4,039,701
Other liabilities	221,249	274,623
Deferred tax liability	4,851,959	5,090,294
Right-of-use operating lease liability	264,647	260,237
Long-term debt, net of current maturities	24,715,554	24,512,656
Liabilities, Total	32,361,534	34,177,511
Limited Liability Company (LLC) Members' Equity [Abstract]
Member's deficiency (100 membership units issued and outstanding)	(412,836)	(475,650)
Accumulated other comprehensive income	(12,851)	(8,201)
Total member's deficiency	(425,687)	(483,851)
Noncontrolling interests	(12,238)	(28,701)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(437,925)	(512,552)
Total liabilities and member's deficiency	31,923,609	33,664,959
CSC Holdings | Related Party
Current Assets:
Prepaid expenses and other current assets ($407 and $572 due from affiliates, respectively)	407	572
Liabilities, Current [Abstract]
Other Accrued Liabilities, Current	$ 71,523	$ 20,857