DESCRIPTION OF BUSINESS AND RELATED MATTERS	12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND RELATED MATTERS	DESCRIPTION OF BUSINESS AND RELATED MATTERS The Company and Related Matters Optimum Communications, Inc. ("Optimum Communications,") formerly known as Altice USA, Inc. ("Altice USA") was incorporated in Delaware on September 14, 2015. Optimum Communications is majority-owned by Patrick Drahi through Next Alt. S.à.r.l. ("Next Alt"). Patrick Drahi also controls Altice Group Lux S.à.r.l., formerly Altice Europe N.V. ("Altice Europe") and its subsidiaries and other entities. On November 7, 2025, we amended our certificate of incorporation to change our corporate name from Altice USA, Inc. to Optimum Communications, Inc.). Optimum Communications is a holding company that does not conduct any business operations of its own. Altice Europe, through a subsidiary, acquired Cequel Corporation ("Cequel") on December 21, 2015 (the "Cequel Acquisition") and Cequel was contributed to Optimum Communications on June 9, 2016. Optimum Communications acquired Cablevision Systems Corporation ("Cablevision") on June 21, 2016 (the "Cablevision Acquisition"). Optimum Communications, through CSC Holdings, LLC (a wholly-owned subsidiary of Cablevision) and its consolidated subsidiaries ("CSC Holdings," and collectively with Optimum Communications, the "Company", "we", "us" and "our"), principally delivers broadband, video, and telephony services to residential and business customers, as well as proprietary content and advertising services in the United States. We market our residential services under the Optimum brand and provide enterprise services under the Lightpath and Optimum Business brands. In addition, we offer a full service mobile offering to consumers across our footprint. As these businesses are managed on a consolidated basis, we classify our operations in one segment. The accompanying consolidated financial statements ("consolidated financial statements") of Optimum Communications include the accounts of Optimum Communications and its majority-owned subsidiaries and the accompanying consolidated financial statements of CSC Holdings include the accounts of CSC Holdings and its majority-owned subsidiaries. The consolidated balance sheets and statements of operations of Optimum Communications are essentially identical to the consolidated balance sheets and statements of operations of CSC Holdings, except for the assets and liabilities and results of operations associated with the wholly-owned subsidiary of Optimum Communications that provides insurance coverage to CSC Holdings ("Captive"), as well as additional cash and deferred tax liabilities at Optimum Communications. Additionally, CSC Holdings and its subsidiaries have certain intercompany receivables from and payables to Optimum Communications. The combined notes to the consolidated financial statements relate to the Company, which, except as noted, are essentially identical for Optimum Communications and CSC Holdings. All significant intercompany transactions and balances between Optimum Communications and its respective consolidated subsidiaries are eliminated in Optimum Communications' consolidated financial statements. All significant intercompany transactions and balances between CSC Holdings and its respective consolidated subsidiaries are eliminated in CSC Holdings' consolidated financial statements. Intercompany transactions between Optimum Communications and CSC Holdings are not eliminated in the CSC Holdings consolidated financial statements, but are eliminated in the Optimum Communications consolidated financial statements. The financial statements of CSC Holdings are included herein as supplemental information as CSC Holdings is not an SEC registrant.

Optimum Communications, Inc. ("Optimum Communications,") formerly known as Altice USA, Inc. ("Altice USA") was incorporated in Delaware on September 14, 2015. Optimum Communications is majority-owned by Patrick Drahi through Next Alt. S.à.r.l. ("Next Alt"). Patrick Drahi also controls Altice Group Lux S.à.r.l., formerly Altice Europe N.V. ("Altice Europe") and its subsidiaries and other entities. On November 7, 2025, we amended our certificate of incorporation to change our corporate name from Altice USA, Inc. to Optimum Communications, Inc.).

Optimum Communications is a holding company that does not conduct any business operations of its own. Altice Europe, through a subsidiary, acquired Cequel Corporation ("Cequel") on December 21, 2015 (the "Cequel Acquisition") and Cequel was contributed to Optimum Communications on June 9, 2016. Optimum Communications acquired Cablevision Systems Corporation ("Cablevision") on June 21, 2016 (the "Cablevision Acquisition").

Optimum Communications, through CSC Holdings, LLC (a wholly-owned subsidiary of Cablevision) and its consolidated subsidiaries ("CSC Holdings," and collectively with Optimum Communications, the "Company", "we", "us" and "our"), principally delivers broadband, video, and telephony services to residential and business customers, as well as proprietary content and advertising services in the United States. We market our residential services under the Optimum brand and provide enterprise services under the Lightpath and Optimum Business brands. In addition, we offer a full service mobile offering to consumers across our footprint. As these businesses are managed on a consolidated basis, we classify our operations in one segment.

The accompanying consolidated financial statements ("consolidated financial statements") of Optimum Communications include the accounts of Optimum Communications and its majority-owned subsidiaries and the accompanying consolidated financial statements of CSC Holdings include the accounts of CSC Holdings and its majority-owned subsidiaries. The consolidated balance sheets and statements of operations of Optimum Communications are essentially identical to the consolidated balance sheets and statements of operations of CSC Holdings, except for the assets and liabilities and results of operations associated with the wholly-owned subsidiary of Optimum Communications that provides insurance coverage to CSC Holdings ("Captive"), as well as additional cash and deferred tax liabilities at Optimum Communications. Additionally, CSC Holdings and its subsidiaries have certain intercompany receivables from and payables to Optimum Communications.

The combined notes to the consolidated financial statements relate to the Company, which, except as noted, are essentially identical for Optimum Communications and CSC Holdings. All significant intercompany transactions and balances between Optimum Communications and its respective consolidated subsidiaries are eliminated in Optimum Communications' consolidated financial statements. All significant intercompany transactions and balances between CSC Holdings and its respective consolidated subsidiaries are eliminated in CSC Holdings' consolidated financial statements. Intercompany transactions between Optimum Communications and CSC Holdings are not eliminated in the CSC Holdings consolidated financial statements, but are eliminated in the Optimum Communications consolidated financial statements.