Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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DEBT - CSC Holdings Credit Facilities (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Principal amount		$ 26,544,747,000		$ 26,671,018,000
Proceeds from long-term debt		150,000,000	$ 150,000,000
Repayments of line of credit		329,688,000	225,863,000
CSC Holdings
Debt Instrument [Line Items]
Cash distributions to parent		0	501,000,000
Proceeds from long-term debt		150,000,000	150,000,000
Repayments of line of credit		329,688,000	$ 225,863,000
5.5% Notes due April 15, 2027 \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		$ 1,310,000,000		1,310,000,000
Stated interest rate		5.50%
8.0% Notes due April 15, 2020 \| Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 1,000,000,000		1,000,000,000
Stated interest rate		3.375%
Secured Debt [Member] \| CSC Holdings Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		2.25%
Secured Debt [Member] \| Incremental Term Loan B-3
Debt Instrument [Line Items]
Principal amount		$ 1,236,750,000		1,239,938,000
Secured Debt [Member] \| Incremental Term Loan B-5
Debt Instrument [Line Items]
Principal amount		2,940,000,000		2,947,500,000
Secured Debt [Member] \| Cablevision Lightpath Term B Loan
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000
Principal amount		592,500,000		594,000,000
Secured Debt [Member] \| Cablevision Lightpath Term B Loan \| Alternate Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Secured Debt [Member] \| Cablevision Lightpath Term B Loan \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Revolving Credit Facility \| CSC Holdings Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		2,475,000,000
Principal amount		$ 740,000,000		$ 900,000,000