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- Definition

Carrying value of Credit Facility Debt

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Debt Instrument, Debt Redeemed

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Debt Instrument, Premium Paid In Connection With Early Tender Of Notes

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Debt Instrument, Remaining Debt Post Exchange

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- Definition

Face amount of Credit Facility Debt

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- Definition

Face Amount of Senior Notes and Senior Guaranteed Notes

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Line of Credit Facility, Periodic Payment, Percentage of Principal

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- Definition

Original Value of Senior Note

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

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

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

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Present value of lessee's discounted obligation for lease payments from finance lease.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The effective interest rate at the end of the reporting period.

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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 the required periodic payment applied to principal.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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DEBT - Credit Silo Combination (Details) - USD ($)		1 Months Ended			12 Months Ended
DEBT - Credit Silo Combination (Details) - USD ($)	Mar. 15, 2017	Oct. 31, 2019	Apr. 30, 2018	Jan. 31, 2018	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Nov. 30, 2018	Nov. 27, 2018	Jul. 31, 2017	Jun. 21, 2016
Debt Instrument [Line Items]
Principal amount					$ 24,817,366,000		$ 23,296,581,000
Redeemed debt					8,886,000
Long-term debt					24,420,285,000		22,812,600,000
Face Amount of Senior Notes and Senior Guaranteed Notes					15,657,497,000		15,733,145,000
Carrying amount of Senior Notes and Senior Guaranteed Notes					15,476,496,000		15,359,561,000
Face amount of Credit Facility Debt					7,190,438,000		5,972,500,000
Carrying value of Credit Facility Debt					7,148,287,000		5,915,559,000
Finance Lease, Liability					69,420,000		25,190,000
Long-term Debt, Current Maturities					170,682,000		158,625,000
Finance Lease, Liability, Current					22,017,000	$ 5,928,000	5,928,000
Long-term Debt, Excluding Current Maturities					24,249,603,000		22,653,975,000
Principal Amount					24,817,366,000		23,296,581,000
Original Value of Senior Note					5,520,000,000
Debt Instrument, Premium Paid In Connection With Early Tender Of Notes								$ 6,500,000	$ 6,500,000
Debt Instrument, Remaining Debt Post Exchange								$ 5,500,050,000
Loans Payable
Debt Instrument [Line Items]
Principal amount					83,415,000		98,134,000
Long-term debt					83,415,000		98,134,000
Principal Amount					83,415,000		98,134,000
Credit Facility [Domain]
Debt Instrument [Line Items]
Principal amount					65,250,000		54,563,000
Long-term Debt, Current Maturities					65,250,000		54,563,000
Principal Amount					65,250,000		54,563,000
Short-term Debt
Debt Instrument [Line Items]
Principal amount					170,682,000		158,625,000
Long-term Debt, Current Maturities					170,682,000		158,625,000
Principal Amount					170,682,000		158,625,000
Cequel and Cequel Capital 5.5% Senior Notes due May 15, 2026
Debt Instrument [Line Items]
Stated interest rate								5.50%
5.125% Senior Notes due December 15, 2021
Debt Instrument [Line Items]
Stated interest rate								5.125%
Original Cequel Notes
Debt Instrument [Line Items]
Debt Instrument, Remaining Debt Post Exchange								$ 5,206,000
Incremental Term Loan B-3 \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount					$ 1,265,438,000		1,275,000,000
Stated interest rate					3.99%
Line of Credit Facility, Maximum Borrowing Capacity							1,275,000,000
Credit facility					$ 1,260,200,000		1,268,931,000
Principal Amount					1,265,438,000		1,275,000,000
Line of credit facility periodic payment, percentage of principal	0.25%
Line of credit facility, periodic payment amount	$ 3,188,000
New CSC Holdings Notes
Debt Instrument [Line Items]
Principal amount								5,520,000,000	5,520,000,000
Principal Amount								5,520,000,000	$ 5,520,000,000
Debt Instrument, Remaining Debt Post Exchange								$ 5,499,156,000
CSC Holdings Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount					0		250,000,000
Line of Credit Facility, Maximum Borrowing Capacity					2,275,000,000						$ 2,475,000,000
Credit facility					0		231,425,000
Principal Amount					0		250,000,000
CSC Holdings Revolving Credit Facility \| Secured Debt [Member] \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
CSC Holdings Term Loan B \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount					$ 2,925,000,000		2,955,000,000
Stated interest rate					3.99%
Credit facility					$ 2,911,729,000		2,939,425,000
Principal Amount					2,925,000,000		2,955,000,000
Incremental Term Loan B-2 \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount					$ 0		1,492,500,000
Stated interest rate					0.00%
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,500,000,000
Credit facility					$ 0		1,475,778,000
Principal Amount					0		1,492,500,000
Line of credit facility periodic payment, percentage of principal				0.25%
Line of credit facility, periodic payment amount				$ 3,750,000
Incremental Term Loan B-2 \| Secured Debt [Member] \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate				2.50%
Incremental Term Loan B-5 \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount					$ 3,000,000,000		0
Stated interest rate					4.24%
Credit facility					$ 2,976,358,000		0
Principal Amount					3,000,000,000		0
Line of credit facility, periodic payment amount	$ 7,500
Incremental Term Loan B-5 \| Secured Debt [Member] \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate		2.50%
Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount					1,759,017,000		1,459,638,000
Long-term debt					1,585,088,000		1,406,182,000
Principal Amount					1,759,017,000		1,459,638,000
Loans Payable
Debt Instrument [Line Items]
Principal amount					140,994,000		106,108,000
Long-term debt					140,994,000		106,108,000
Principal Amount					140,994,000		106,108,000
Senior Secured Notes due 2023, 5.375% [Member]
Debt Instrument [Line Items]
Stated interest rate									5.375%
Senior Notes due 2021, 5.125% [Member]
Debt Instrument [Line Items]
Stated interest rate									5.125%
CSC Holdings Term Loan Facility \| Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount	3,000,000,000						2,925,000,000
Line of Credit Facility, Maximum Borrowing Capacity							3,000,000,000
Principal Amount	$ 3,000,000,000						2,925,000,000
Line of credit facility periodic payment, percentage of principal	0.25%
Line of credit facility, periodic payment amount	$ 7,500,000
CSC Holdings Term Loan Facility \| Secured Debt [Member] \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Senior Notes \| Original Cequel Notes
Debt Instrument [Line Items]
Principal amount					14,744,000
Principal Amount					14,744,000
Senior Notes \| 8.625% Notes due February 15, 2019
Debt Instrument [Line Items]
Principal amount					$ 0		526,000,000
Stated interest rate					8.625%
Outstanding debt					$ 0		527,749,000
Principal Amount					0		526,000,000
Senior Notes \| 8.0% Notes due April 15, 2020
Debt Instrument [Line Items]
Principal amount					$ 0		500,000,000
Stated interest rate					8.00%
Outstanding debt					$ 0		495,302,000
Principal Amount					0		500,000,000
Senior Notes \| 6.75% Notes due November 15, 2021
Debt Instrument [Line Items]
Principal amount					$ 1,000,000,000		1,000,000,000
Stated interest rate					6.75%
Outstanding debt					$ 979,178,000		969,285,000
Principal Amount					1,000,000,000		1,000,000,000
Senior Notes \| 5.875% Notes due September 15, 2022
Debt Instrument [Line Items]
Principal amount					$ 649,024,000		649,024,000
Stated interest rate					5.875%
Outstanding debt					$ 600,849,000		585,817,000
Principal Amount					649,024,000		649,024,000
Senior Notes \| 5.25% Notes due June 1, 2024
Debt Instrument [Line Items]
Principal amount					$ 750,000,000		750,000,000
Stated interest rate					5.25%
Outstanding debt					$ 683,940,000		671,829,000
Principal Amount					750,000,000		750,000,000
Senior Notes \| Cablevision 7.750% Notes due July 15, 2025
Debt Instrument [Line Items]
Principal amount					$ 1,740,000		1,740,000
Stated interest rate					7.75%
Outstanding debt					$ 1,695,000		1,690,000
Principal Amount					1,740,000		1,740,000
Senior Notes \| 10.125% Notes due January 15, 2023
Debt Instrument [Line Items]
Principal amount					$ 0		1,800,000,000
Stated interest rate					10.125%
Outstanding debt					$ 0		1,781,424,000
Principal Amount					0		1,800,000,000
Senior Notes \| 10.875% Notes due October 15, 2025
Debt Instrument [Line Items]
Principal amount					$ 1,684,221,000		1,684,221,000
Stated interest rate					10.875%
Outstanding debt					$ 1,665,237,000		1,663,027,000			$ 315,779,000
Principal Amount					1,684,221,000		1,684,221,000
Senior Notes \| Cablevision 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Principal amount					$ 4,118,000		4,118,000
Stated interest rate					7.50%
Outstanding debt					$ 4,112,000		4,110,000
Principal Amount					4,118,000		4,118,000
Senior Notes \| Cablevision 5.125% Notes due December 15, 2021
Debt Instrument [Line Items]
Principal amount					0		8,886,000
Redeemed debt					$ 8,886,000
Stated interest rate					5.125%
Outstanding debt					$ 0		8,274,000
Principal Amount					0		8,886,000
Senior Notes \| CSC Holdings 5.125% Notes due December 15, 2021
Debt Instrument [Line Items]
Principal amount					$ 0		1,240,762,000
Stated interest rate					5.125%
Outstanding debt					$ 0		1,155,264,000
Principal Amount					0		1,240,762,000
Senior Notes \| CSC Holdings 7.750% Notes due July 15, 2025
Debt Instrument [Line Items]
Principal amount					$ 617,881,000		617,881,000
Stated interest rate					7.75%
Outstanding debt					$ 605,583,000		603,889,000
Principal Amount					617,881,000		617,881,000
Original Value of Senior Note					620,000,000
Senior Notes \| CSC Holdings 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Principal amount					$ 1,045,882,000		1,045,882,000
Stated interest rate					7.50%
Outstanding debt					$ 1,044,278,000		1,044,143,000
Principal Amount					1,045,882,000		1,045,882,000
Original Value of Senior Note					1,050,000,000
Senior Notes \| CSC Holdings 5.750% Notes due January 15, 2030
Debt Instrument [Line Items]
Principal amount					$ 2,250,000,000		0
Stated interest rate					5.75%
Outstanding debt					$ 2,289,168,000
Principal Amount					2,250,000,000		0
Senior Notes \| Remaining Cequel Notes
Debt Instrument [Line Items]
Principal amount					5,499,156,000
Principal Amount					5,499,156,000
Senior Notes \| 6.375% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Redeemed debt	$ 450,000,000		$ 1,050,000,000
Stated interest rate	6.375%
Write-off of deferred financings costs			$ 20,173,000
Secured Debt [Member] \| 5.125% Senior Notes due December 15, 2021
Debt Instrument [Line Items]
Principal amount					1,240,762,000
Principal Amount					1,240,762,000
Original Value of Senior Note					1,250,000,000
Secured Debt [Member] \| CSC Holdings 5.375% Senior Guaranteed Notes due July 15, 2023
Debt Instrument [Line Items]
Principal amount					$ 1,095,825,000		1,095,825,000
Stated interest rate					5.375%
Outstanding debt					$ 1,081,879,000		1,078,428,000
Principal Amount					1,095,825,000		1,095,825,000
Redemption Premium					4,157,000
Original Value of Senior Note					1,100,000,000
Secured Debt [Member] \| CSC Holdings 5.500% Notes due May 15, 2026
Debt Instrument [Line Items]
Principal amount					$ 1,498,806,000		1,498,806,000
Stated interest rate					5.50%
Outstanding debt					$ 1,485,911,000		1,484,278,000
Principal Amount					1,498,806,000		1,498,806,000
Redemption Premium					1,049,000
Original Value of Senior Note					1,500,000,000
Secured Debt [Member] \| 6.625% Notes due October 15, 2025
Debt Instrument [Line Items]
Principal amount					$ 1,000,000,000		1,000,000,000
Stated interest rate					6.625%
Outstanding debt					$ 989,483,000		988,052,000
Principal Amount					1,000,000,000		1,000,000,000
Secured Debt [Member] \| 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Principal amount					$ 1,310,000,000		1,310,000,000
Stated interest rate					5.50%
Outstanding debt					$ 1,305,430,000		1,304,936,000
Principal Amount					1,310,000,000		1,310,000,000
Secured Debt [Member] \| 5.375% Senior Guaranteed Notes Due February 1, 2028
Debt Instrument [Line Items]
Principal amount					$ 1,000,000,000		1,000,000,000
Stated interest rate					5.375%
Outstanding debt					$ 992,757,000		992,064,000
Principal Amount					1,000,000,000		1,000,000,000
Secured Debt [Member] \| CSC Holdings 6.500% Notes due February 1, 2029
Debt Instrument [Line Items]
Principal amount					$ 1,750,000,000		0
Stated interest rate					6.50%
Outstanding debt					$ 1,746,996,000		0
Principal Amount					1,750,000,000		0
Secured Debt [Member] \| Remaining Cequel Notes
Debt Instrument [Line Items]
Redemption Premium					5,206,000
Long-term Debt
Debt Instrument [Line Items]
Principal amount					24,646,684,000		23,137,956,000
Long-term Debt, Excluding Current Maturities					24,249,603,000		22,653,975,000
Principal Amount					$ 24,646,684,000		$ 23,137,956,000