v3.26.1
FAIR VALUE MEASUREMENT (Tables)
 6 Months Ended
Jun. 30, 2026
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents our financial assets and financial liabilities that are measured at fair value on a recurring basis and their classification under the fair value hierarchy:
Fair Value
Hierarchy		June 30, 2026December 31, 2025
Assets:
Money market funds (a)Level I$825,563 $937,365 
Interest rate swap contractsLevel II— 2,274 
Liabilities:
Interest rate swap contractsLevel II— 1,342 
Contingent consideration related to acquisitionsLevel III4,500 4,941 
(a)Money market funds at CSC Holdings amounted to $817,662 and $929,604 as of June 30, 2026 and December 31, 2025, respectively.
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments
June 30, 2026December 31, 2025
Fair Value
Hierarchy		Carrying
Amount (a)		Estimated
Fair Value		Carrying
Amount (a)		Estimated
Fair Value
Credit facility debtLevel II$5,033,627 $4,937,500 $5,613,602 $5,621,683 
Secured Fiber Network Revenue NotesLevel II1,633,079 1,653,565 — — 
Senior guaranteed notes and senior secured notesLevel II10,685,375 6,533,200 11,128,572 7,929,625 
Senior notesLevel II6,162,803 1,431,375 6,578,353 2,841,963 
UnSub Group Credit FacilityLevel III2,923,712 3,051,505 1,898,893 1,995,498 
NYC ABS receivables facility loan
Level III— — 881,175 990,076 
$26,438,596 $17,607,145 $26,100,595 $19,378,845 
(a)Amounts are net of unamortized deferred financing costs and discounts/premiums.
The table above excludes the estimated fair value of CSC Holding's note payable to Captive of $78,500 and $82,500 as of June 30, 2026 and December 31, 2025, respectively, as it is eliminated in the Optimum Communications consolidated financial statements (see Note 13). The carrying value of the note payable approximates fair value due to its short-term maturity (less than one year).