SUBSEQUENT EVENT	9 Months Ended
Sep. 30, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENT	SUBSEQUENT EVENTS Revolver Repayment On October 15, 2018, CSC Holdings made a voluntary repayment under its revolving credit facility of $125,000. Incremental CSC Holdings Term Loan Facility In October 2018, in connection with its intention to combine the Cequel and Cablevision businesses under a single credit silo, the Company commenced an exchange of senior and senior secured notes (see below) and successfully entered into a new $1,275,000 7-year senior secured term loan maturing January 2026 (the “Senior Secured Term Loan B”), providing for the refinancing of the entire principal amount of loans under Cequel’s existing Term Loan Facility and other transaction costs related to the credit silo combination. The new Senior Secured Term Loan B will have a margin of 2.25% over LIBOR and was issued with an original issue discount of 25 basis points. Senior Notes Exchange On October 2, 2018, Cequel, Cequel Capital and Altice US Finance I Corporation (the "Issuers"), commenced offers to exchange (the "Exchange Offers") any and all outstanding senior notes and senior secured notes issued by them (the "Original Notes") for up to $5,520,000 aggregate principal amount of new notes (the "New Notes") and, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, cash. These New Notes will be automatically converted into new CSC Holdings notes upon satisfaction (or waiver) of certain conditions set forth in the Exchange Offers. Additionally, in connection with the Exchange Offers, the Issuers solicited consents to amend each of the Original Notes, except the 5.125% Notes due 2021, and the indentures governing such notes. The proposed amendments, which require the consent of a majority in outstanding aggregate principal amount of each series of relevant Original Notes, respectively, will eliminate or waive substantially all of the restrictive covenants, eliminate certain events of default, and modify or eliminate certain other provisions. Each of the Exchange Offers is subject to the condition that there have been validly tendered and not validly withdrawn a majority of the outstanding aggregate principal amount of each of the 5.375% Secured Notes due 2023 and 5.500% Secured Notes due 2026 (the “Minimum Tender Condition”). Eligible holders who validly tendered and did not validly withdraw Original Notes on October 16, 2018 (the "Early Tender Time") received for each $1,000 principal amount of Original Notes tendered and accepted by the applicable Issuer, $1,000 principal amount of New Notes, plus, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, at least $2.50 in cash. Eligible holders who didn't validly tender Original Notes after the Early Tender Time, but prior to October 30, 2018 received for each $1,000 principal amount of Original Notes tendered and accepted by the applicable Issuer, $950 principal amount of New Notes. In connection with the Early Tender Time described above, the Issuers exchanged $1,232,328 aggregate principal amount of the 5.125% Senior Notes due 2021, $610,698 aggregate principal amount of the 7.750% Senior Notes due 2025, $1,045,443 aggregate principal amount of the 7.500% Senior Notes due 2028, $1,095,493 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $1,495,642 aggregate principal amount of the 5.500% Senior Secured Notes due 2026. For the period subsequent to the Early Tender Time through October 30, 2018, the Issuers exchanged $8,786 aggregate principal amount of the 5.125% Senior Notes due 2021, $7,562 aggregate principal amount of the 7.750% Senior Notes due 2025, $439 aggregate principal amount of the 7.500% Senior Notes due 2028, $350 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $3,309 aggregate principal amount of the 5.500% Senior Secured Notes due 2026. The principal amount of the unexchanged Original Notes include $8,886 aggregate principal amount of the 5.125% Senior Notes due 2021, $1,740 aggregate principal amount of the 7.750% Senior Notes due 2025, $4,118 aggregate principal amount of the 7.500% Senior Notes due 2028, $4,157 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $1,049 aggregate principal amount of the 5.500% Senior Secured Notes due 2026. Deferred financing costs and unamortized discounts related to the Cequel term loan, senior notes and secured senior notes aggregated $143,326 at September 30, 2018. The Company is evaluating whether the term loan refinancing and the exchange of notes is deemed an extinguishment of debt and whether any of these costs will be written off in the fourth quarter of 2018.

SUBSEQUENT EVENTS

Revolver Repayment

On October 15, 2018, CSC Holdings made a voluntary repayment under its revolving credit facility of $125,000.

Incremental CSC Holdings Term Loan Facility

In October 2018, in connection with its intention to combine the Cequel and Cablevision businesses under a single credit silo, the Company commenced an exchange of senior and senior secured notes (see below) and successfully entered into a new $1,275,000 7-year senior secured term loan maturing January 2026 (the “Senior Secured Term Loan B”), providing for the refinancing of the entire principal amount of loans under Cequel’s existing Term Loan Facility and other transaction costs related to the credit silo combination. The new Senior Secured Term Loan B will have a margin of 2.25% over LIBOR and was issued with an original issue discount of 25 basis points.

Senior Notes Exchange

On October 2, 2018, Cequel, Cequel Capital and Altice US Finance I Corporation (the "Issuers"), commenced offers to exchange (the "Exchange Offers") any and all outstanding senior notes and senior secured notes issued by them (the "Original Notes") for up to $5,520,000 aggregate principal amount of new notes (the "New Notes") and, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, cash. These New Notes will be automatically converted into new CSC Holdings notes upon satisfaction (or waiver) of certain conditions set forth in the Exchange Offers.

Additionally, in connection with the Exchange Offers, the Issuers solicited consents to amend each of the Original Notes, except the 5.125% Notes due 2021, and the indentures governing such notes. The proposed amendments, which require the consent of a majority in outstanding aggregate principal amount of each series of relevant Original Notes, respectively, will eliminate or waive substantially all of the restrictive covenants, eliminate certain events of default, and modify or eliminate certain other provisions. Each of the Exchange Offers is subject to the condition that there have been validly tendered and not validly withdrawn a majority of the outstanding aggregate principal amount of each of the 5.375% Secured Notes due 2023 and 5.500% Secured Notes due 2026 (the “Minimum Tender Condition”).

Eligible holders who validly tendered and did not validly withdraw Original Notes on October 16, 2018 (the "Early Tender Time") received for each $1,000 principal amount of Original Notes tendered and accepted by the applicable Issuer, $1,000 principal amount of New Notes, plus, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, at least $2.50 in cash. Eligible holders who didn't validly tender Original Notes after the Early Tender Time, but prior to October 30, 2018 received for each $1,000 principal amount of Original Notes tendered and accepted by the applicable Issuer, $950 principal amount of New Notes.

In connection with the Early Tender Time described above, the Issuers exchanged $1,232,328 aggregate principal amount of the 5.125% Senior Notes due 2021, $610,698 aggregate principal amount of the 7.750% Senior Notes due 2025, $1,045,443 aggregate principal amount of the 7.500% Senior Notes due 2028, $1,095,493 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $1,495,642 aggregate principal amount of the 5.500% Senior Secured Notes due 2026.

For the period subsequent to the Early Tender Time through October 30, 2018, the Issuers exchanged $8,786 aggregate principal amount of the 5.125% Senior Notes due 2021, $7,562 aggregate principal amount of the 7.750% Senior Notes due 2025, $439 aggregate principal amount of the 7.500% Senior Notes due 2028, $350 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $3,309 aggregate principal amount of the 5.500% Senior Secured Notes due 2026.

The principal amount of the unexchanged Original Notes include $8,886 aggregate principal amount of the 5.125% Senior Notes due 2021, $1,740 aggregate principal amount of the 7.750% Senior Notes due 2025, $4,118 aggregate principal amount of the 7.500% Senior Notes due 2028, $4,157 aggregate principal amount of the 5.375% Senior Secured Notes due 2023 and $1,049 aggregate principal amount of the 5.500% Senior Secured Notes due 2026.

Deferred financing costs and unamortized discounts related to the Cequel term loan, senior notes and secured senior notes aggregated $143,326 at September 30, 2018. The Company is evaluating whether the term loan refinancing and the exchange of notes is deemed an extinguishment of debt and whether any of these costs will be written off in the fourth quarter of 2018.