Vendor financed capital additions unpaid Vendor financed capital additions unpaid Vendor financed capital additions unpaid Percent of shares owned by controlling shareholder after Private Exchange Percent of shares owned by controlling shareholder after Private Exchange Percent of shares owned by controlling shareholder after Private Exchange Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] CSC Holdings 4.625% Notes due December 1, 2030 CSC Holdings 4.625% Notes due December 1, 2030 [Member] CSC Holdings 4.625% Notes due December 1, 2030 Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Title of 12(b) Security Title of 12(b) Security Carrying Amount Reported Value Measurement [Member] Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Share based compensation - Unrecognized deferred compensation cost Share based compensation - Unrecognized deferred compensation cost Share based compensation - Unrecognized deferred compensation cost Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Loss (gain) on investments, sale of assets or sale of affiliate interests Gain (Loss) on Investments and Sale of Affiliate Interests, Net Gain (Loss) on Investments and Sale of Affiliate Interests, Net Segment Reporting [Abstract] 5.375% Senior Guaranteed Notes Due February 1, 2028 5.375% Senior Guaranteed Notes Due February 1, 2028 [Member] 5.375% Senior Guaranteed Notes Due February 1, 2028 [Member] Common stock Common Stock, Value, Issued 2017 LTIP 2017 LTIP [Member] 2017 LTIP [Member] Employee-related Liabilities, Current Employee-related Liabilities, Current Credit facility debt Line of Credit [Member] Amount of Deferred Cash Performance Awards Outstanding Amount of Deferred Cash Performance Awards Outstanding Amount of Deferred Cash Performance Awards Outstanding Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Derivative Instrument [Axis] Derivative Instrument [Axis] Proceeds from Divestiture of Businesses Proceeds from Divestiture of Businesses Measurement Frequency [Axis] Measurement Frequency [Axis] Amendment Flag Amendment Flag Consolidated Entities [Axis] Consolidated Entities [Axis] Current Liabilities: Liabilities, Current [Abstract] Allowance for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Principal payments on finance lease obligations Principal payments on finance lease obligations Finance Lease, Principal Payments Assets, long term Assets, long term Assets, long term Cablevision Lightpath LLC 5.625% Notes due September 15, 2028 Cablevision Lightpath LLC 5.625% Notes due September 15, 2028 [Member] Cablevision Lightpath LLC 5.625% Notes due September 15, 2028 Altice Europe Altice Europe [Member] Altice Europe Redeemable Preferred Units Issued (not convertible to shares) Redeemable Preferred Units Issued (not convertible to shares) Redeemable Preferred Units Issued (not convertible to shares) Member's Deficiency Membership interest before accumulated comprehensive loss Membership interest before accumulated comprehensive loss Amortization Amortization Dividend on redeemable preferred units if compounded Dividend on redeemable preferred units if compounded Dividend on redeemable preferred units if compounded Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Intangible Asset, Finite-Lived, Acquired [Line Items] Intangible Asset, Finite-Lived, Acquired [Line Items] Senior notes Senior Debt Obligations [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] AFFILIATE AND RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Entity Address, State or Province Entity Address, State or Province Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Assets: Assets, Fair Value Disclosure [Abstract] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] 8.0% Notes due April 15, 2020 Cablevision 8.0% Notes due April 15, 2020 [Member] Cablevision 8.0% Notes due April 15, 2020 [Member] CSC Holdings Revolving Credit Facility CSC Holdings Revolving Credit Facility [Member] CSC Holdings Revolving Credit Facility [Member] Basic weighted average common shares (in thousands) Weighted Average Number of Shares Outstanding, Basic Capital expenditures Related Party Transaction, Purchases from Related Party 2019 LTIP 2019 LTIP [Member] 2019 LTIP Summary of related party transactions Schedule of Related Party Transactions [Table Text Block] Temporary Equity, Par Value Temporary Equity, Par Value Total current liabilities Liabilities, Current Liabilities, Current 2030 Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest Total deficiency Beginning balance Ending balance Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest Customer relationships Customer Relationships [Member] Monetary value of Tender Offer Monetary value of Tender Offer Monetary value of Tender Offer Deferred revenue Increase (Decrease) in Deferred Revenue Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Franchise fees and other taxes and fees Revenue from Contract with Customer, Including Assessed Tax Entity Address, City or Town Entity Address, City or Town Non-Cash Investing and Financing Activities and Other Supplemental Data Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Applicable income taxes Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Financial Instrument, Mandatorily Redeemable, Liability Classified, Settlement, Amount Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Amount Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Restructuring, impairments and other operating items (See Note 7) Restructuring and Other Expense Restructuring and Other Expense Amortizable intangibles, net of accumulated amortization of $6,560,958 and $6,461,571, respectively Amortizable intangibles, net of accumulated amortization of $6,560,958 and $6,461,571, respectively Net Carrying Amount Intangible Asset, Finite-Lived, after Accumulated Amortization Debt Issuance Costs, Gross Debt Issuance Costs, Gross Stated interest rate Line of Credit Facility, Interest Rate at Period End Accounts and Other Receivables, Net, Current Accounts and Other Receivables, Net, Current Senior guaranteed notes and senior secured notes Senior Guarantee Notes [Member] Senior Guarantee Notes [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Other income (expense): Nonoperating Income (Expense) [Abstract] Intangible Asset, Finite-Lived, Accumulated Amortization Amortizable intangible assets, accumulated amortization Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Debt Long-Term Debt, Current Maturities Long-Term Debt, Current Maturities Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Recently Issued But Not Yet Adopted Accounting Pronoucements New Accounting Pronouncements, Policy [Policy Text Block] Network services Network services Network services Capital expenditures accrued but unpaid Capital Expenditures Incurred but Not yet Paid Segment Reporting Segment Reporting [Table Text Block] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Related Party [Axis] Related and Nonrelated Parties [Axis] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] concentration of customer to trade receivables concentration of customer to trade receivables Concentration of customer to trade receivables Repayment of debt Repayments of line of credit Repayments of Lines of Credit Amounts due from and due to affiliates Increase (Decrease) Due from Affiliates Long-term debt Long-Term Debt Long-Term Debt Restricted cash, long-term Restricted Cash and Investments, Noncurrent Non-Cash Investing and Financing Activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Document Period End Date Document Period End Date Change in operating assets and liabilities, net of effects of acquisitions and dispositions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Principal Amount Principal amount Debt Instrument, Face Amount Operating expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Treasury stock, at cost ($11,815,481 shares of Class A common stock at June 30, 2026 and 967,629 at December 31, 2025 and 74,153,348 shares of Class B common stock as of June 30, 2026) Treasury Stock, Common, Value Limited Liability Company (LLC) Members' Equity [Abstract] Limited Liability Company (LLC) Members' Equity [Abstract] Sales and marketing department Sales and marketing department Sales and marketing department SUPPLEMENTAL CASH FLOW INFORMATION Cash Flow, Supplemental Disclosures [Text Block] Non-cash exchange of shares for redeemable preferred units Non-Cash Exchange Of Shares For Redeemable Preferred Units Non-Cash Exchange Of Shares For Redeemable Preferred Units Accumulated other comprehensive income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Common Class B Common Class B [Member] Entity Shell Company Entity Shell Company Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Interest payable Interest Payable, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] NET INCOME (LOSS) PER SHARE Earnings Per Share [Text Block] Net loss per share: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Shares owned by controlling shareholder prior to tender Percent of shares owned by controlling shareholder prior to Private Exchange Percent of shares owned by controlling shareholder prior to Private Exchange Total liabilities Total liabilities Liabilities Trading Symbol Trading Symbol Capital expenditures Payments to Acquire Property, Plant, and Equipment Indefinite-lived cable franchise rights Cable television franchises Intangible Asset, Excluding Goodwill, Indefinite-Lived Operating expenses, net Related Party Transaction, Cost and Expenses Related Party Transaction, Cost and Expenses Business services and wholesale Business Services and Wholesale [Member] Business Services and Wholesale [Member] Litigation settlements, net of reimbursements Gain (Loss) from Litigation Settlement Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortization of deferred financing costs and discounts (premiums) on indebtedness Amortization of Debt Issuance Costs and Discounts Reclassifications Reclassifications [Text Block] Optimum Communications Optimum Communications [Member] Optimum Communications Credit Facility [Domain] Credit Facility [Domain] 2027 Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two Related Party Transactions [Abstract] Related Party Transactions [Abstract] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Dividend on redeemable preferred units Dividend on redeemable preferred units if paid in cash Dividend on redeemable preferred units if paid in cash Shares, Issued Shares, Issued Franchise [Member] Franchise [Member] Basic and diluted weighted average common shares (in thousands) Weighted Average Number of Shares Outstanding, Diluted Contract Assets and Liabilities [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Related Party Transaction [Line Items] Related Party Transaction [Line Items] Carrying value of Credit Facility Debt Carrying value of Credit Facility Debt Carrying value of Credit Facility Debt Proceeds from long-term debt Proceeds from Lines of Credit Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Revenue from Contract with Customer [Abstract] Other amortizable intangibles Other Intangible Assets [Member] Gain (loss) on interest rate swap contracts, net Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments Noncash PaymentsOfCapitalDistribution Noncash PaymentsOfCapitalDistribution Noncash payments of capital distribution Restricted Cash, Current Restricted Cash, Current Treasury Stock, Common Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Letters of credit outstanding Letters of Credit Outstanding, Amount Share-based compensation expense (equity classified) APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] 2021 Lightpath Incentive Plan 2021 Lightpath Incentive Plan [Member] 2021 Lightpath Incentive Plan Tender offer price Tender offer price per share Tender offer price per share Defined benefit pension plans, net of income taxes Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Face Amount of Senior Guaranteed Notes Face Amount of Senior Guaranteed Notes Face Amount of Senior Guaranteed Notes Substantial Doubt about Going Concern Substantial Doubt about Going Concern [Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share 2026 Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months Plan Name [Domain] Plan Name [Domain] Right-of-use operating lease assets Operating Lease, Right-of-Use Asset CSC Holdings Restricted Group [Member] CSC Holdings Restricted Group [Member] CSC Holdings Restricted Group Defined benefit pension plans Defined benefit pension and postretirement plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Synthetic LIBOR Synthetic LIBOR [Member] Synthetic LIBOR Income Tax [Table] Income Tax [Table] Income Tax Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Second Amendment to Unsub Group Credit Facility Second Amendment to Unsub Group Credit Facility [Member] Second Amendment to Unsub Group Credit Facility Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Reporting Segment Reporting [Text Block] Credit facility Long-Term Line of Credit Minimum Minimum [Member] Facility Realignment and Other Costs [Member] Facility Realignment and Other Costs [Member] Facility Realignment and Other Costs [Member] Net increase (decrease) in cash and cash equivalents Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Grant date fair value of award units Grant date fair value of award units Grant date fair value of award units Class A-1 management incentive units Class A-1 management incentive units [Member] Class A-1 management incentive units Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Programming costs Programming costs Programming costs Money market funds (a) Cash and Cash Equivalents, Fair Value Disclosure Total stockholders' deficiency Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Common stock, shares authorized (in shares) Common Stock, Shares Authorized Estimated Useful Lives Intangible Asset, Finite-Lived, Useful Life Dividend on redeemable preferred units increase if triggered by certain events Dividend on redeemable preferred units increase if triggered by certain events Dividend on redeemable preferred units increase if triggered by certain events Concentration Risk Disclosure Concentration Risk Disclosure [Text Block] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Residential revenue Total Residential Revenue [Member] Total Residential Revenue Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Fair Value Measured on a Recurring Basis Fair Value, Recurring [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Captive Captive [Member] Captive CSC Holdings 7.500% Notes due April 1, 2028 CSC Holdings 7.500% Notes due April 1, 2028 [Member] CSC Holdings 7.500% Notes due April 1, 2028 [Member] Document Quarterly Report Document Quarterly Report Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Interest rate swap contracts Interest Rate Swap [Member] Senior Subordinated Notes Senior Subordinated Notes [Member] DEBT Debt Disclosure [Text Block] Equity Component [Domain] Equity Component [Domain] Secured Debt [Member] Secured Debt [Member] Debt maturing in April 2027 Debt maturing in April 2027 Debt maturing in April 2027 Deferred Costs Deferred Costs Total operating expenses Costs and Expenses Costs and Expenses Thereafter Long-Term Debt, Maturity, after Year Five Counterparty Name [Domain] Counterparty Name [Domain] Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Total Optimum Communications stockholders' deficiency Equity, Attributable to Parent Total other income (expense) Nonoperating Income (Expense) Nonoperating Income (Expense) Restructuring Type [Axis] Restructuring Type [Axis] Incremental Term Loan B-5 Incremental Term Loan B-5 [Member] Incremental Term Loan B-5 ASSETS Assets [Abstract] Cablevision Lightpath LLC 3.875% Notes due September 15, 2027 Cablevision Lightpath LLC 3.875% Notes due September 15, 2027 [Member] Cablevision Lightpath LLC 3.875% Notes due September 15, 2027 Payments of Capital Distribution Payments of Capital Distribution Accounting Policies [Abstract] Accounting Policies [Abstract] CSC Holdings 6.500% Notes due February 1, 2029 CSC Holdings 6.500% Notes due February 1, 2029 [Member] CSC Holdings 6.500% Notes due February 1, 2029 Cablevision 7.500% Notes due April 1, 2028 CSC Holdings/Cablevision 7.500% Notes due April 1, 2028 [Member] Cablevision 7.500% Notes due April 1, 2028 [Member] Indefinite-lived cable franchise rights impairment Intangible Asset, Including Goodwill, Impairment Loss Intangible Asset, Including Goodwill, Impairment Loss Finance Lease, Liability Finance Lease, Liability Other, net Proceeds from (Payment for) Other Financing Activity Accounts receivable, trade allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Accounts Receivable, Allowance for Credit Loss, Current Prepaid expenses and other current assets ($445 and $475 due from affiliates, respectively) Due from: Prepaid expenses and other current assets ($10,239 and $2,821 due from affiliates, respectively) Prepaid Expense and Other Assets, Current Deferred income taxes Deferred Income Tax Expense (Benefit) Type of Restructuring [Domain] Type of Restructuring [Domain] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Number of segments Number of Operating Segments Restricted share units Restricted Stock Units (RSUs) [Member] Entity Central Index Key Entity Central Index Key Deferred cash-denominated award [Member] Deferred cash-denominated performance award [Member] Deferred cash-denominated performance award Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Total stockholders' equity before accumulated other comprehensive Income and non-controlling interest Total Stockholders Equity Before Accumulated Other Comprehensive Income (Loss) and Non-controlling Interest Total Stockholders Equity Before Accumulated Other Comprehensive Income (Loss) and Non-controlling Interest Interest rate swap contracts Increase (Decrease) in Derivative Liabilities Cash distributions to parent, net Stockholders' Equity, Other Stockholders' Equity Attributable to Parent [Abstract] Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gain (loss) on investments and sale of affiliate interests Gain (Loss) on Investments Operating expenses: Operating Expenses [Abstract] Schedule of Acquired Finite-Lived Intangible Assets by Major Class Intangible Asset, Finite-Lived [Table Text Block] Number of shares purchased from Tender Offer Number of shares purchased from Tender Offer Number of shares purchased from Tender Offer Intangible Asset, Finite-Lived, Acquired [Table] Intangible Asset, Finite-Lived, Acquired [Table] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Condensed Financial Statements Condensed Financial Statements [Text Block] City Area Code City Area Code Variable Rate [Domain] Variable Rate [Domain] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Subsequent Events Subsequent Events [Text Block] Membership equity before noncontrolling interest Membership equity before noncontrolling interest Membership equity before noncontrolling interest Decrease in right-of-use assets Operating Lease, Right-of-Use Asset, Periodic Reduction Debt, fair value Debt Instrument, Fair Value Disclosure Dividends to stockholders Payments of Dividends Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Payout amount based on meeting target values for deferred cash performance awards Payout amount based on meeting target values for deferred cash performance awards Payout amount based on meeting target values for deferred cash performance awards Transaction costs Transaction costs [Member] Transaction costs Statement [Line Items] Statement [Line Items] Total assets Assets Other, net Other adjustment to equity (deficiency) Other adjustment to equity (deficiency) Common Unit, Outstanding Common Unit, Outstanding Entity [Domain] Entity - Not Default [Domain] Entity [Domain] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Broadband Broadband [Member] Broadband [Member] Members' Equity Common Unit, Issued Unsub Group Credit Facility Unsub Group Credit Facility [Member] Unsub Group Credit Facility Class A-2 management incentive units Class A-2 management incentive units [Member] Class A-2 management incentive units SHARE-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Customer Contracts Customer Contracts [Member] Concentration Risk, Customer Concentration Risk, Customer Share based compensation expense Share-Based Payment Arrangement, Expense Class A and Class B shares combined Class A and Class B shares combined [Member] Class A and Class B shares combined Measurement Basis [Axis] Measurement Basis [Axis] Other liabilities Other Liabilities, Noncurrent Goodwill Goodwill Goodwill Line of Credit Facility, Ability to expand Maximum Borrowing Capacity Line of Credit Facility, Ability to expand Maximum Borrowing Capacity Line of Credit Facility, Ability to expand Maximum Borrowing Capacity Common Class C Common Class C [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Right of use asset Right of use operating leases [Member] Right of use operating leases Other Accounts Payable and Accrued Liabilities Other Accounts Payable and Accrued Liabilities Retained Earnings [Member] Retained Earnings [Member] Operating Lease, Liability, Noncurrent Operating Lease, Liability, Noncurrent 5.5% Notes due April 15, 2027 CSC Holdings 5.5% Notes due April 15, 2027 [Member] CSC Holdings 5.5% Notes due April 15, 2027 [Member] Money market funds (a) Money Market Funds [Member] Revolving Credit Facility Revolving Credit Facility [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Diluted income (loss) per share attributable to Optimum Communications, Inc. stockholders Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Liabilities: Liabilities, Fair Value Disclosure [Abstract] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to reconcile net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Condensed Financial Information Disclosure [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property, plant and equipment, net of accumulated depreciation of $10,394,257 and $9,835,958, respectively Property, plant and equipment, net of accumulated depreciation of $10,394,257 and $9,835,958, respectively Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Carrying amount of Senior Notes Carrying amount of Senior Notes Carrying amount of Senior Notes Restructuring Cost Activity Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] News and advertising Advertising and News [Member] Advertising and News revenue Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted INTANGIBLE ASSETS Intangible Asset and Goodwill [Text Block] Estimated Fair Value Estimate of Fair Value Measurement [Member] Lightpath Fiber Issuer LLC Series 2026-1, Class A-2 5.597% Notes due 2031 Lightpath Fiber Issuer LLC Series 2026-1, Class A-2 5.597% Notes due 2031 [Member] Lightpath Fiber Issuer LLC Series 2026-1, Class A-2 5.597% Notes due 2031 Interest payable Increase (Decrease) in Interest Payable, Net Face Amount of Senior Notes Face Amount of Senior Notes Face Amount of Senior Notes Other, net Payment for (Proceeds from) Other Investing Activity Lightpath credit facility, senior secured and senior notes Lightpath credit facility, senior secured and senior notes [Member] Lightpath credit facility, senior secured and senior notes Distributions to noncontrolling interests Proceeds from (Payments to) Noncontrolling Interests Nonvested Restricted Stock Shares Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Segment Reporting [Table] Segment Reporting [Table] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Other direct costs Other direct costs Other direct costs Operating Income (Loss), Total Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Members' Equity, Total Members' Equity Lightpath Liquidity Funding Notes Lightpath Liquidity Funding Notes [Member] Lightpath Liquidity Funding Notes Other operating expenses Other operating expenses Other operating expenses Cash dividends declared per common share Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Accrued dividends related to redeemable preferred units Accrued dividends related to redeemable preferred units Accrued dividends related to redeemable preferred units Accrued dividends related to redeemable preferred units Outstanding debt Senior Notes Common stock, shares issued (in shares) Common Stock, Shares, Issued CSC Holdings CSC Holdings [Member] CSC Holdings [Member] Treasury Stock, Shares Treasury Stock, Common, Shares Purchase price of units Purchase price of units Purchase price of units Other Products And Services, Other (including Mobile Equipment) [Member] Products And Services, Other [Member] CSC Holdings 5.750% Notes due January 15, 2030 CSC Holdings 5.750% Notes due January 15, 2030 [Member] CSC Holdings 5.750% Notes due January 15, 2030 Equity Components [Axis] Equity Components [Axis] Other operating expenses Other operating expenses, net Other operating expenses Other Cost and Expense, Operating Accounts receivable, trade Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Related Party Related Party [Member] Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Arrangement with Individual, Compensation Expense Income taxes paid, net Income Tax Paid, after Refund Received Contract Assets [Table] Disaggregation of Revenue [Table] Common Class A Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Long-term Debt Long-Term Debt [Member] Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Deferred tax liability Deferred Income Tax Liabilities, Net Entity Small Business Entity Small Business Comprehensive loss attributable to Optimum Communications, Inc. stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subsequent Events [Abstract] Subsequent Events [Abstract] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Pension liability adjustments, net of income taxes Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Interest expense, net Interest Income (Expense), Operating Other assets Other assets Other Assets, Noncurrent Document Type Document Type Payments for acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Loss on extinguishment of debt and write-off of deferred financing costs Loss on extinguishment of debt and write-off of deferred financing costs Loss on extinguishment of debt and write-off of deferred financing costs Gain (Loss) on Extinguishment of Debt 2028 Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three CSC Holdings 11.7400% Senior Guaranteed Notes due Jan 31, 2029 CSC Holdings 11.7500% Senior Guaranteed Notes due Jan 31, 2029 [Member] CSC Holdings 11.7500% Senior Guaranteed Notes due Jan 31, 2029 Net income (loss) after dividends Net income (loss) after dividends Net income (loss) after dividends ACCOUNTING STANDARDS Significant Accounting Policies [Text Block] Mobile Mobile Services [Member] Mobile Revenue[Member] Telephony Telephony [Member] Telephony [Member] Line of credit facility, periodic payment amount Line of Credit Facility, Periodic Payment, Principal Net charges Operating Costs and Expenses Subsequent Event [Line Items] Subsequent Event [Line Items] Local Phone Number Local Phone Number Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Alternate base Rate Alternate base Rate [Member] Alternate base Rate Share-Based Payment Arrangement, Performance Shares, Activity Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Commitments and contingencies (Note 14) Commitments and contingencies (Note 14) Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Revenue Revenue Revenue Revenues Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Amount of reimbursement recorded through equity Amount of reimbursement recorded through equity Amount of reimbursement recorded through equity Value of shares exchanged for redeemable preferred units by directors and executive management Value of shares exchanged for redeemable preferred units by directors and executive management Value of shares exchanged for redeemable preferred units by directors and executive management Counterparty Name [Axis] Counterparty Name [Axis] LIABILITIES AND STOCKHOLDERS' DEFICIENCY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Fed Rate, Prime Rate and Alternate Base Rate Fed Rate, Prime Rate and Alternate Base Rate [Member] Fed Rate, Prime Rate and Alternate Base Rate Trade names Trade 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due December 1, 2030 CSC Holdings 4.125% Notes due December 1, 2030 [Member] CSC Holdings 4.125% Notes due December 1, 2030 Face Amount of Senior Notes and Senior Secured Notes Face Amount of Senior Notes and Senior Secured Notes Face Amount of Senior Notes and Senior Secured Notes Noncontrolling interests Equity, Attributable to Noncontrolling Interest CSC Holdings 4.500% Senior Guaranteed Notes due November 15, 2021 CSC Holdings 4.500% Senior Guaranteed Notes due November 15, 2021 [Member] CSC Holdings 4.500% Senior Guaranteed Notes due November 15, 2021 Plan Name [Axis] Plan Name [Axis] Non-cash exchange of shares for redeemable preferred units Restructuring Charges Related Party [Domain] Related and Nonrelated Parties [Domain] Paid-in capital Additional Paid in Capital Other expense, net Other expense, net Other Nonoperating Income (Expense) Parent [Member] Parent [Member] Parent [Member] Stockholders' Deficiency: Equity, Including Portion Attributable to Noncontrolling Interest 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Net Income (Loss) Attributable to Parent, Total Net loss attributable to CSC Holdings, LLC sole member Net Income (Loss) Attributable to Parent i24 News i24 News [Member] i24 News Carrying amount of Senior Guaranteed Notes Carrying amount of Senior Guaranteed Notes Carrying amount of Senior Guaranteed Notes Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] CSC Holdings 5.000% Notes due November 15, 2031 CSC Holdings 5.000% Notes due November 15, 2031 [Member] CSC Holdings 5.000% Notes due November 15, 2031 Proceeds related to sale of equipment, net of costs of disposal Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Liabilities, Other than Long-Term Debt, Noncurrent Liabilities, Other than Long-Term Debt, Noncurrent 2029 Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four Asset Derivatives: Derivative Asset, Subject to Master Netting Arrangement, before Offset Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Non-cash exchange of shares for redeemable preferred units Non-cash exchange of shares for redeemable preferred units [Member] Non-cash exchange of shares for redeemable preferred units Redeemable preferred units Redeemable preferred units [Member] Redeemable preferred units Lightpath Fiber Issuer LLC Series 2026-1, Class B 5.597% Notes due 2031 Lightpath Fiber Issuer LLC Series 2026-1, Class B 5.597% Notes due 2031 [Member] Lightpath Fiber Issuer LLC Series 2026-1, Class B 5.89% Notes due 2031 BASIS OF PRESENTATION Basis of Presentation and Significant Accounting Policies [Text Block]