CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Assets [Abstract]
Accounts receivable, trade allowance for doubtful accounts	$ 35,389,000	$ 24,232,000
Prepaid expenses and other current assets	189,391,000	141,897,000
Property, plant and equipment, accumulated depreciation	9,835,958,000	8,762,014,000
Amortizable intangible assets, accumulated amortization	6,461,571,000	6,190,154,000
LIABILITIES AND MEMBER'S DEFICIENCY
Other current liabilities	$ 406,280,000	$ 425,459,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares outstanding (in shares)	0	0
Cash and cash equivalents	$ 1,012,201,000	$ 256,534,000
Restricted cash	107,384,000	290,000
Accounts receivable, trade (less allowance for credit losses of $35,389 and $24,232, respectively)	335,820,000	332,271,000
Property, plant and equipment, net of accumulated depreciation of $9,835,958 and $8,762,014, respectively	8,351,391,000	8,414,632,000
Right-of-use operating lease assets	243,626,000	248,013,000
Other assets	120,341,000	94,403,000
Finite-Lived Intangible Assets, Net	702,467,000	960,805,000
Cable television franchises	11,600,000,000	13,211,308,000
Goodwill	8,041,217,000	8,041,217,000
Accounts Payable, Current	816,860,000	971,499,000
Interest payable	413,709,000	406,208,000
Accrued employee related costs	206,192,000	191,990,000
Deferred revenue	147,139,000	74,167,000
Long-Term Debt, Current Maturities	60,842,000	185,473,000
Other Liabilities, Noncurrent	316,398,000	320,435,000
Deferred tax liability	4,232,867,000	4,455,840,000
Right-of-use operating lease liability	250,407,000	255,116,000
Long-term debt, net of current maturities	26,145,372,000	24,872,015,000
Preferred stock, $0.01 par value, 100,000,000 shares authorized, no shares issued and outstanding	0	0
Paid-in capital	252,553,000	233,953,000
Retained Earnings (Accumulated Deficit)	(2,573,017,000)	(703,993,000)
Treasury Stock, Value	(10,000)	(10,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,604,000	(3,826,000)
Noncontrolling interests	$ 21,928,000	$ 12,403,000
Treasury Stock, Common, Shares	967,629	967,629
Related Party
Assets [Abstract]
Prepaid expenses and other current assets	$ 475,000	$ 314,000
LIABILITIES AND MEMBER'S DEFICIENCY
Other current liabilities	27,029,000	26,944,000
CSC Holdings
Assets [Abstract]
Accounts receivable, trade allowance for doubtful accounts	35,389,000	24,232,000
Prepaid expenses and other current assets	191,909,000	142,694,000
Property, plant and equipment, accumulated depreciation	9,835,958,000	8,762,014,000
Amortizable intangible assets, accumulated amortization	6,461,571,000	6,190,154,000
LIABILITIES AND MEMBER'S DEFICIENCY
Other current liabilities	388,298,000	407,540,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Cash and cash equivalents	1,001,919,000	246,326,000
Restricted cash	107,384,000	290,000
Accounts receivable, trade (less allowance for credit losses of $35,389 and $24,232, respectively)	335,820,000	332,271,000
Property, plant and equipment, net of accumulated depreciation of $9,835,958 and $8,762,014, respectively	8,351,391,000	8,414,632,000
Right-of-use operating lease assets	243,626,000	248,013,000
Other assets	132,205,000	108,855,000
Finite-Lived Intangible Assets, Net	702,467,000	960,805,000
Cable television franchises	11,600,000,000	13,211,308,000
Goodwill	8,041,217,000	8,041,217,000
Long-Term Debt, Current Maturities	60,842,000	185,473,000
Other Liabilities, Noncurrent	268,802,000	255,683,000
Deferred tax liability	4,232,867,000	4,455,840,000
Right-of-use operating lease liability	250,407,000	255,116,000
Long-term debt, net of current maturities	26,145,372,000	24,872,015,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,604,000	(3,826,000)
Noncontrolling interests	21,928,000	12,403,000
CSC Holdings | Related Party
Assets [Abstract]
Prepaid expenses and other current assets	2,821,000	905,000
LIABILITIES AND MEMBER'S DEFICIENCY
Other current liabilities	26,944,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Accounts Payable, Current	816,860,000	971,499,000
Interest payable	413,709,000	406,208,000
Accrued employee related costs	206,192,000	191,990,000
Deferred revenue	$ 147,139,000	$ 74,167,000
Common Class A
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	4,000,000,000
Common stock, shares issued (in shares)	288,381,276	279,948,159
Common stock, shares outstanding (in shares)	287,413,647	278,980,530
Common Stock	$ 2,884,000	$ 2,799,000
Common Class B
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000
Common stock, shares issued (in shares)	490,086,674	490,086,674
Common stock, shares outstanding (in shares)	183,019,831	184,224,015
Common Stock	$ 1,830,000	$ 1,842,000
Common Class C
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	4,000,000,000
Common stock, shares outstanding (in shares)	0
Common Stock	$ 0	$ 0