Statement of Financial Position [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current INVESTMENT IN CABLE PROPERTIES: Investment In Cable Properties [Abstract] Property, plant and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Mergers and Acquisitions [Abstract] Mergers and Acquisitions [Abstract] Schedule of Pro Forma Financial Information Business Acquisition, Pro Forma Information [Table Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] TWC Transaction [Member] TWC Transaction [Member] TWC Transaction [Member] Bright House Transaction [Member] Bright House Transaction [Member] Bright House Transaction [Member] Purchase Price Information by Acquisition: Business Acquisition [Line Items] Allocation of purchase price Allocation of purchase price [Table Text Block] Tabular disclosure of the allocation of purchase price to recognized assets acquired and liabilities assumed in a business combination. Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts payable - trade Accounts Payable, Trade, Current Deferred revenue Deferred Revenue, Current Accrued liabilities: Accrued Liabilities, Current [Abstract] Programming costs Program Rights Obligations, Current Labor Employee-related Liabilities, Current Capital expenditures Accrued capital expenditures Carrying value as of the balance sheet date of accrued capital expenditures for long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Interest Interest Payable, Current Taxes and regulatory fees Accrued Taxes And Regulatory Fees, Current Carrying value as of the balance sheet date of obligations incurred through that date for taxes and regulatory fees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Other Other Accrued Liabilities, Current Total accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Consolidating Schedules [Abstract] Consolidating Schedules [Abstract] Condensed Income Statement [Table] Condensed Income Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] CCO Holdings [Member] CCO holdings [Member] Another company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree. Charter Operating and Restricted Subsidiaries [Member] Charter Operating and Subsidiaries [Member] Another company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree. Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Eliminations [Member] Consolidation, Eliminations [Member] Condensed Consolidating Statements of Operations Condensed Income Statements, Captions [Line Items] REVENUES Revenues COSTS AND EXPENSES: Operating Costs and Expenses [Abstract] Operating costs and expenses (exclusive of items shown separately below) Operating Expenses Depreciation and amortization Depreciation, Amortization and Accretion, Net Other operating expenses, net Other Operating Income (Expense), Net Total costs and expenses Costs and Expenses Income from operations Operating Income (Loss) OTHER INCOME (EXPENSES): Other Expenses [Abstract] Interest expense, net Interest Income (Expense), Net Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Gain (loss) on financial instruments, net Financial Instrument Gain Loss Net Amount of realized and unrealized gain (loss) recognized on derivative instruments not designated or qualifying as hedging instruments in the income statement combined with amount of realized and unrealized gain (loss) recognized on foreign currency denominated debt in the income statement. Other pension benefits Defined Benefit Plan Net Periodic Benefit Cost Excluding Service Cost The total amount of net periodic benefit cost for defined benefit plans for the period excluding the amount recognized for service cost. Other expense, net Other Nonoperating Income (Expense) Equity in income of subsidiaries Income (Loss) from Subsidiaries, before Tax Total other income (expense) Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax benefit (expense) Income Tax Expense (Benefit) Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income Net Income (Loss) Attributable to Parent Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair Value of Assets and Liabilities Measured on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Carrying Value and Fair Value of Debt Fair Value, by Balance Sheet Grouping [Table Text Block] Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Condensed Consolidating Statements of Comprehensive Income (Loss) Condensed Statement of Income Captions [Line Items] Net impact of interest rate derivative instruments Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Consolidated comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Contingencies Commitments and Contingencies Disclosure [Text Block] Mergers and Acquisitions Business Combination Disclosure [Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Derivatives [Member] Interest Rate Swap [Member] Cross Currency Derivatives [Member] Currency Swap [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Notes and Debentures [Member] Senior Notes And Debentures [Member] Senior notes and debentures. Credit Facilities [Member] Credit facilities [Member] Credit facilities Fair Value Measurements: Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Maximum amount allowed to be invested in any single financial instrument (money market funds) per investment policy Maximum amount invested in financial instrument per investment policy Maximum amount that can be invested in any one financial instrument per investment policy Weighted average pay rate for interest rate derivative instruments (percentage) Derivative, Average Variable Interest Rate Money market funds Cash and Cash Equivalents, Fair Value Disclosure Liability position derivative instruments, fair value Derivative Liability Debt, fair value Long-term Debt, Fair Value Debt, carrying value Long-term Debt Asset impairment charges Asset Impairment Charges Business Acquisition Information by Acquisition: TWC enterprise value including cash, equity and debt assumed TWC Enterprise Value Measure of TWC's total value including cash, equity and debt assumed. Business Combination, Consideration Transferred Business Combination, Consideration Transferred Net assets not contributed down to the subsidiary in connection with the TWC Transaction Net assets not contributed down to the subsidiary in connection with the TWC Transaction Net assets not contributed down to the subsidiary in connection with the TWC Transaction Preliminary allocation of purchase price: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Customer relationships Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Customer Relationships The amount of customer relationships recognized as of the acquisition date. Franchises Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Indefinite Lived Franchise Rights The amount of rights acquired through a franchise arrangement having an indefinite period of benefit recognized as of the acquisition date. Goodwill Goodwill Other noncurrent assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Accounts payable and accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Deferred income taxes Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent Other long-term liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Noncontrolling interests Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Total assets acquired plus goodwill less liabilities assumed and noncontrolling interests acquired Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Measurement period adjustment, working capital Business Combination Provisional Information Initial Accounting Incomplete Adjustment Working Capital This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to working capital assumed in connection with a business combination for which the initial accounting was incomplete. Measurement period adjustment, deferred income taxes Business Combination Provisional Information Initial Accounting Incomplete Adjustment Deferred Tax Liabilities Noncurrent This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to noncurrent deferred tax liabilities assumed in connection with a business combination for which the initial accounting was incomplete. Measurement period adjustments impact on goodwill Goodwill, Purchase Accounting Adjustments Pro forma financial information: Business Acquisition, Pro Forma Information [Abstract] Pro forma revenues Business Acquisition, Pro Forma Revenue Pro forma net income attributable to CCO Holdings member Business Acquisition, Pro Forma Net Income (Loss) Entities [Table] Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Current Reporting Status Entity Current Reporting Status Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Statement of Comprehensive Income [Abstract] Consolidated comprehensive income Comprehensive income attributable to CCO Holdings member Loss Contingency, Damages Sought, Value Loss Contingency, Damages Sought, Value Stock Compensation Plans [Abstract] Stock Compensation Plans [Abstract] Equity Award Grants Schedule of Share-based Compensation, Activity [Table Text Block] Loans Receivable (Payable) - Related Party [Abstract] Loans Receivable (Payable) - Related Party [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Charter Holdco [Member] Charter Holdco [Member] Charter Holdco [Member] Charter [Member] Charter [Member] Charter [Member] Related Party Transactions: Related Party Transaction [Line Items] LOANS PAYABLE - RELATED PARTY Due to Related Parties, Noncurrent Basis spread on variable rate (percentage) Debt Instrument, Basis Spread on Variable Rate ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, less allowance for doubtful accounts of $103 and $124, respectively Accounts Receivable, Net, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net of accumulated depreciation of $16,350 and $11,085, respectively Property, Plant and Equipment, Net Customer relationships, net Customer relationships, net Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the value of the business relationship with existing customers (less anticipated churn). Franchises Indefinite-Lived Franchise Rights Goodwill Total investment in cable properties, net Total investment in cable properties, net Sum of carrying amounts as of the balance sheet date of property, plant and equipment, franchises, customer relationships, net and goodwill. OTHER NONCURRENT ASSETS Other Assets, Noncurrent Total assets Assets LIABILITIES AND MEMBER'S EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable and accrued liabilities Payables to related party Due to Related Parties, Current Current portion of long-term debt Long-term Debt, Current Maturities Total current liabilities Liabilities, Current LONG-TERM DEBT Long-term Debt, Excluding Current Maturities DEFERRED INCOME TAXES Deferred Tax Liabilities, Net OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent MEMBER'S EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Member's Equity Members' Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total CCO Holdings member's equity Members' Equity Noncontrolling interest Members' Equity Attributable to Noncontrolling Interest Total member's equity Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and member's equity Liabilities and Equity Operating Costs and Expenses Operating Costs and Expenses [Text Block] The entire disclosure for Operating Costs and Expenses. Accounting for Derivative Instruments and Hedging Activities [Abstract] Accounting for Derivative Instruments and Hedging Activities [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Interest Rate Swap [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accrued Interest [Member] Accrued interest [Member] Line item in the statement of financial position in which the fair value amounts of the derivative instrument are included. Other Long-Term Liabilities [Member] Other Noncurrent Liabilities [Member] Derivatives: Derivatives, Fair Value [Line Items] Notional amount Derivative, Notional Amount Collateral holiday agreement, percentage of position covered Collateral Holiday Agreement Percentage Percentage of liability position derivative instruments covered by a collateral holiday agreement. Collateral holiday agreement, term Collateral Holiday Agreement Term Number of years liability position derivative instruments are covered by a collateral holiday agreement. Liability position interest rate derivative instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Unrealized loss on interest rate derivatives included in accumulated other comprehensive loss Unrealized Gain Loss On Interest Rate Cash Flow Hedge Accumulated Other Comprehensive Income Loss Amount of unrealized gain (loss) related to interest rate cash flow hedges in accumulated other comprehensive income (loss). Liability position cross-currency derivative instruments Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Gain (loss) on financial instruments, net: Gain (Loss) On Financial Instruments, Net [Abstract] Gain (Loss) On Financial Instruments, Net [Abstract] Change in fair value of interest rate derivative instruments Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments Change in fair value of cross-currency derivative instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Foreign currentcy remeasurement of Sterling Notes to U.S. dollars Foreign Currency Transaction Gain (Loss), Realized Loss on termination of interest rate derivative instruments Gain Loss On Settlement Of Interest Rate Derivative Instruments Not Designated As Hedging Instruments Amount of gain (loss) recognized in earnings in the period from the settlement of interest rate derivative instruments excluding those designated as hedging instruments. Loss reclassified from accumulated other comprehensive loss due to discontinuance of hedge accounting Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net (Gain) loss on financial instruments, net Organization and Basis of Presentation [Abstract] Organization and Basis of Presentation [Abstract] Number of reportable segments Number of Reportable Segments Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Franchises, Goodwill and Other Intangible Assets [Abstract] Franchises, Goodwill and Other Intangible Assets [Abstract] Indefinite-lived and Finite-lived Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Expected Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Employee Benefit Plans [Abstract] Employee Benefit Plans [Abstract] Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Income Taxes [Abstract] Income Taxes [Abstract] Income Taxes Income Tax Disclosure [Text Block] Programming Programming Expense Programming Expense Regulatory, connectivity and produced content Franchise, Regulatory and Connectivity Expense Franchise, Regulatory and Connectivity Expense Costs to service customers Cost to Service Customers Cost to Service Customers Marketing Marketing and Advertising Expense Transition costs Transition Costs Costs incurred and expensed during the period related to the acquisition of businesses Other Other Cost and Expense, Operating Operating costs and expenses (exclusive of items shown separately in the consolidated statements of operations) Related Party Transactions [Abstract] Equity Method Investee [Member] Equity Method Investee [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum [Member] Maximum [Member] Carrying value of noncontrolling interst purchased Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Dr. John Malone's voting interest in Liberty Interactive Corp. (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Liberty Interactive Corp. Dr. John Malone's, a member of Charter's board of directors, voting interest in Liberty Interactive Corp. Liberty Interactive Corp.'s ownership percentage in HSN, Inc. (percentage) Liberty Interactive Corp.'s ownership percentage in HSN, Inc. Liberty Interactive Corp.'s ownership percentage in HSN, Inc. Percent of board members Liberty Interactive Corp. can elect to HSN Inc.'s board (percentage) Percent of board members Liberty Interactive Corp. can elect to HSN Inc.'s board The percent of board members Liberty Interactive Corp. can elect to HSN Inc.'s board Cash payments received from HSN, Inc. and QVC, Inc. Cash Payments Received From HSN And QVC Cash payments received from HSN and QVC for related party transactions. Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage) Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Discovery Communications, Inc. Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Discovery Communications, Inc. Dr. John Malone's voting interest in Discovery Communications, Inc. for election of directors (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Discovery Communications, Inc. for election of directors Dr. John Malone's, a member of Charter's board of directors, voting interest in Discovery Communications, Inc. for election of directors Advance Newhouse Programming Partnership's ownership percentage in Series A preferred stock of Discovery Communications, Inc. (percentage) Advance Newhouse Programming Partnership Ownership Percentage In Discovery Series A Preferred Stock Percentage represents Advance Newhouse Programming Partnership’s ownership percentage in the Series A preferred stock of Discovery Communications, Inc. Dr. Malone and Mr. Miron, each a member of Charter’s board of directors, also serve on the board of directors of Discovery Communications, Inc. Charter purchases programming from Discovery Communications, Inc. pursuant to agreement(s) entered into prior to Dr. Malone and Mr. Miron joining Charter's board of directors. Advance Newhouse Programming Partnership's ownership percentage in Series C preferred stock of Discovery Communications, Inc. (percentage) Advance Newhouse Programming Partnership Ownership Percentage In Discovery Series C Preferred Stock Percentage represents Advance Newhouse Programming Partnership’s ownership percentage in the Series C preferred stock of Discovery Communications, Inc. Dr. Malone and Mr. Miron, each a member of Charter’s board of directors, also serve on the board of directors of Discovery Communications, Inc. Charter purchases programming from Discovery Communications, Inc. pursuant to agreement(s) entered into prior to Dr. Malone and Mr. Miron joining Charter's board of directors. Advance Newhouse Programming Partnership's ownership percentage in Discovery (percentage) Advance Newhouse Programming Partnership Ownership Percentage In Discovery Percentage represents Advance Newhouse Programming Partnership’s ownership percentage in the outstanding equity of Discovery Communications, Inc., on an as-converted basis. Dr. Malone and Mr. Miron, each a member of Charter’s board of directors, also serve on the board of directors of Discovery Communications, Inc. Charter purchases programming from Discovery Communications, Inc. pursuant to agreement(s) entered into prior to Dr. Malone and Mr. Miron joining Charter's board of directors. Dr. John Malone's ownership percentage in Starz (percentage) Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Starz Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Starz Dr. John Malone's voting interest in Starz (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Starz Dr. John Malone's, a member of Charter's board of directors, voting interest in Starz Percent of total operating costs and expenses paid to Discovery Communications, Inc. and Starz (percentage) Percent of total operating costs and expenses paid to Discovery and Starz Percent of total operating costs and expenses paid to Discovery and Starz Payments to related parties Payments To Related Parties Cash payments made to related parties. Revenue from related parties Revenue from Related Parties Accounting for Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Income Statement [Abstract] Total costs and expenses Income from operations OTHER EXPENSES: Other pension benefits (costs) Total other expenses, net Income before income taxes Consolidated net income Net income attributable to CCO Holdings member Debt Disclosure [Abstract] Long-term Debt Summary Schedule of Debt [Table Text Block] Operating Costs and Expenses Operating Costs and Expenses [Table Text Block] Tabular disclosure of the detailed components of Operating Costs and Expenses. Other Operating Expenses, Net [Abstract] Other Operating Expenses, Net [Abstract] Other Operating Expenses, Net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Accrued Merger and Restructuring Costs by Type of Cost Schedule Of Accrued Merger And Restructuring Costs By Type Of Cost [Table Text Block] Tabular disclosure of an entity's accrual for merger costs and restructuring reserves that occurred during the period for each major type of cost. Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile consolidated net income to net cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock compensation expense Share-based Compensation Accelerated vesting of equity awards Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost Noncash interest income, net Amortization of Debt Discount (Premium) Other pension benefits Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments And Other Costs The amount of net gain recognized in net periodic benefit cost as a result of a pension curtailment net of other defined benefit plan costs (e.g., remeasurement loss). Loss on extinguishment of debt (Gain) loss on financial instruments, net Deferred income taxes Deferred Income Tax Expense (Benefit) Other, net Other Noncash Income (Expense) Changes in operating assets and liabilities, net of effects from acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable, accrued liabilities and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Receivables from and payables to related party, including deferred management fees Increase Decrease In Due From (Due To) Related Parties The increase (decrease) during the reporting period in the value of receivables due from related parties net of payables due to related parties. Net cash flows from operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Change in accrued expenses related to capital expenditures Changes in accrued expenses related to capital expenditures The increase (decrease) during the reporting period in the amounts payable for capital expenditures. Purchases of cable systems, net of cash acquired Payments for (Proceeds from) Productive Assets Other, net Payments for (Proceeds from) Other Investing Activities Net cash flows from investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings of long-term debt Proceeds from Issuance of Long-term Debt Repayments of long-term debt Repayments of Long-term Debt Borrowings (repayments) loans payable - related parties Proceeds from (Repayments of) Related Party Debt Payments for debt issuance costs Payments of Debt Issuance Costs Contributions from parent Proceeds from Contributions from Parent Distributions to parent Payments of Capital Distribution Proceeds from termination of interest rate derivatives Proceeds From Settlement Of Interest Rate Derivative Instruments Not Designated As Hedging Instruments The cash inflow provided by the settlement of interest rate derivative instruments during the period excluding those designated as hedging instruments. Other, net Proceeds from (Payments for) Other Financing Activities Net cash flows from financing activities Net Cash Provided by (Used in) Financing Activities NET INCREASE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period CASH PAID FOR INTEREST Interest Paid, Net CASH PAID FOR TAXES Income Taxes Paid Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Franchises [Member] Franchise Rights [Member] Other Intangible Assets [Member] Other Intangible Assets [Member] Indefinite-lived Intangible Assets: Indefinite-lived Intangible Assets [Line Items] Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Indefinite-lived intangible assets and goodwill Indefinite Lived Intangible Assets Including Goodwill Sum of the carrying amounts as of the balance sheet date of intangible assets having a projected indefinite period of benefit. Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer Relationships [Member] Customer Relationships [Member] Finite-lived Intangible Assets: Finite-Lived Intangible Assets [Line Items] Gross carrying amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amount Finite-Lived Intangible Assets, Net Amortization expense Amortization of Intangible Assets Three months ended December 31, 2017 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Consolidating Schedules Condensed Financial Information of Parent Company Only Disclosure [Text Block] Unrecognized Tax Benefits Unrecognized Tax Benefits Franchises, Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Other Operating Expenses, Net Other Income and Other Expense Disclosure [Text Block] Stock Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Pension curtailment gain Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments Remeasurement loss, net Defined Benefit Plan, Amortization of Gains (Losses) Net periodic pension benefit Defined Benefit Plan, Net Periodic Benefit Cost Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Minimum [Member] Minimum [Member] Charter Operating [Member] Charter Operating [Member] Charter Operating [Member] Time Warner Cable [Member] Time Warner Cable LLC [Member] Time Warner Cable LLC Time Warner Cable Enterprises [Member] Time Warner Cable Enterprises LLC [Member] Time Warner Cable Enterprises LLC 5.250% Senior Notes Due March 15, 2021 [Member] 5.250% Senior Notes Due March 15, 2021 [Member] 5.250% Senior Notes Due March 15, 2021 6.625% Senior Notes Due January 31, 2022 [Member] 6.625% Senior Notes Due January 31, 2022 [Member] 6.625% Senior Notes Due January 31, 2022 5.250% Senior Notes Due September 30, 2022 [Member] 5.250% senior notes due September 30, 2022 [Member] This represents the senior notes 5.250% due September 30, 2022 [Member] 5.125% Senior Notes Due February 15, 2023 [Member] 5.125% Senior Notes Due 2023 [Member] 5.125% Senior Notes Due 2023 [Member] 5.125% Senior Notes Due May 1, 2023 [Member] 5.125% senior notes due May 1, 2023 [Member] 5.125% senior notes due May 1, 2023 5.750% Senior Notes Due September 1, 2023 [Member] 5.750% Senior Notes Due September 1, 2023 [Member] 5.750% Senior Notes Due September 1, 2023 5.750% Senior Notes Due January 15, 2024 [Member] 5.750% Senior Notes Due January 15, 2024 [Member] 5.750% Senior Notes Due January 15, 2024 5.875% Senior Notes Due April 1, 2024 [Member] 5.875% Senior Notes Due April 1, 2024 [Member] 5.875% Senior Notes Due April 1, 2024 5.375% Senior Notes Due May 1, 2025 [Member] 5.375% senior notes due May 1, 2025 [Member] 5.375% senior notes due May 1, 2025 5.750% Senior Notes Due February 15, 2026 [Member] 5.750% Senior Notes Due February 15, 2026 [Member] 5.750% Senior Notes Due February 15, 2026 5.500% Senior Notes Due May 1, 2026 [Member] 5.500% Senior Notes Due May 1, 2026 [Member] 5.500% Senior Notes Due May 1, 2026 5.875% Senior Notes Due May 1, 2027 [Member] 5.875% senior notes due May 1, 2027 [Member] 5.875% senior notes due May 1, 2027 [Member] 5.125% Senior Notes Due May 1, 2027 [Member] 5.125% Senior Notes Due May 1, 2027 [Member] 5.125% Senior Notes Due May 1, 2027 [Member] 5.000% Senior Notes Due February 1, 2028 [Member] 5.000% Senior Notes Due February 1, 2028 [Member] 5.000% Senior Notes Due February 1, 2028 [Member] 3.579% Senior Notes Due July 23, 2020 [Member] 3.579% Senior Notes Due July 23, 2020 [Member] 3.579% Senior Notes Due July 23, 2020 4.464% Senior Notes Due July 23, 2022 [Member] 4.464% Senior Notes Due July 23, 2022 [Member] 4.464% Senior Notes Due July 23, 2022 4.908% Senior Notes Due July 23, 2025 [Member] 4.908% Senior Notes Due July 23, 2025 [Member] 4.908% Senior Notes Due July 23, 2025 3.750% Senior Notes Due February 15, 2028 [Member] 3.750% Senior Notes Due February 15, 2028 [Member] 3.750% Senior Notes Due February 15, 2028 [Member] 4.200% Senior Notes Due March 15, 2028 [Member] 4.200% Senior Notes Due March 15, 2028 [Member] 4.200% Senior Notes Due March 15, 2028 [Member] 6.384% Senior Notes Due October 23, 2035 [Member] 6.384% Senior Notes Due October 23, 2035 [Member] 6.384% Senior Notes Due October 23, 2035 6.484% Senior Notes Due October 23, 2045 [Member] 6.484% Senior Notes Due October 23, 2045 [Member] 6.484% Senior Notes Due October 23, 2045 5.375% Senior Notes Due May 1, 2047 [Member] 5.375% Senior Notes Due May 1, 2047 [Member] 5.375% Senior Notes Due May 1, 2047 [Member] 6.834% Senior Notes Due October 23, 2055 [Member] 6.834% Senior Notes Due October 23, 2055 [Member] 6.834% Senior Notes Due October 23, 2055 5.850% Senior Notes Due May 1, 2017 [Member] 5.850% Senior Notes Due May 1, 2017 [Member] 5.850% Senior Notes Due May 1, 2017 6.750% Senior Notes Due July 1, 2018 [Member] 6.750% Senior Notes Due July 1, 2018 [Member] 6.750% Senior Notes Due July 1, 2018 8.750% Senior Notes Due February 14, 2019 [Member] 8.750% Senior Notes Due February 14, 2019 [Member] 8.750% Senior Notes Due February 14, 2019 8.250% Senior Notes Due April 1, 2019 [Member] 8.250% Senior Notes Due April 1, 2019 [Member] 8.250% Senior Notes Due April 1, 2019 5.000% Senior Notes Due February 1, 2020 [Member] 5.000% Senior Notes Due February 1, 2020 [Member] 5.000% Senior Notes Due February 1, 2020 4.125% Senior Notes Due February 15, 2021 [Member] 4.125% Senior Notes Due February 15, 2021 [Member] 4.125% Senior Notes Due February 15, 2021 4.000% Senior Notes Due September 1, 2021 [Member] 4.000% Senior Notes Due September 1, 2021 [Member] 4.000% Senior Notes Due September 1, 2021 5.750% Sterling Senior Notes Due June 2, 2031 [Member] 5.750% Sterling Senior Notes Due June 2, 2031 [Member] 5.750% Sterling Senior Notes Due June 2, 2031 6.550% Senior Debentures Due May 1, 2037 [Member] 6.550% Senior Debentures Due May 1, 2037 [Member] 6.550% Senior Debentures Due May 1, 2037 7.300% Senior Debentures Due July 1, 2038 [Member] 7.300% Senior Debentures Due July 1, 2038 [Member] 7.300% Senior Debentures Due July 1, 2038 6.750% Senior Debentures Due June 15, 2039 [Member] 6.750% Senior Debentures Due June 15, 2039 [Member] 6.750% Senior Debentures Due June 15, 2039 5.875% Senior Debentures Due November 15, 2040 [Member] 5.875% Senior Debentures Due November 15, 2040 [Member] 5.875% Senior Debentures Due November 15, 2040 5.500% Senior Debentures Due September 1, 2041 [Member] 5.500% Senior Debentures Due September 1, 2041 [Member] 5.500% Senior Debentures Due September 1, 2041 5.250% Sterling Senior Notes Due July 15, 2042 [Member] 5.250% Sterling Senior Notes Due July 15, 2042 [Member] 5.250% Sterling Senior Notes Due July 15, 2042 4.500% Senior Debentures Due September 15, 2042 [Member] 4.500% Senior Debentures Due September 15, 2042 [Member] 4.500% Senior Debentures Due September 15, 2042 8.375% Senior Debentures Due March 15, 2023 [Member] 8.375% Senior Debentures Due March 15, 2023 [Member] 8.375% Senior Debentures Due March 15, 2023 8.375% Senior Debentures Due July 15, 2033 [Member] 8.375% Senior Debentures Due July 15, 2033 [Member] 8.375% Senior Debentures Due July 15, 2033 Revolving Credit Facility [Member] Revolving Credit Facility [Member] 7.000% Senior Notes Due January 15, 2019 [Member] 7.000% Senior Notes Due January 15, 2019 [Member] 7.000% Senior Notes Due January 15, 2019 7.375% Senior Notes Due June 1, 2020 [Member] 7.375% Senior Notes Due June 1, 2020 [Member] 7.375% Senior Notes Due June 1, 2020 6.500% Senior Notes Due April 30, 2021 [Member] 6.500% Senior Notes Due April 30, 2021 [Member] 6.500% Senior Notes Due April 30, 2021 5.125% Senior Notes Due May 1, 2027 issued in February 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in February 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in February 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in March 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in March 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in March 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in April 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in April 2017 [Member] 5.125% Senior Notes Due May 1, 2027 issued in April 2017 [Member] 4.000% Senior Notes Due March 1, 2023 [Member] 4.000% Senior Notes Due March 1, 2023 [Member] 4.000% Senior Notes Due March 1, 2023 [Member] Term Loan E [Member] Term Loan E [Member] Term Loan E [Member] Term Loan F [Member] Term Loan F [Member] Term Loan F [Member] 5.375% Senior Notes Due May 1, 2047 issued in April 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in April 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in April 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in July 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in July 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in July 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in September 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in September 2017 [Member] 5.375% Senior Notes Due May 1, 2047 issued in September 2017 [Member] Long-term Debt: Debt Instrument [Line Items] Principal amount Debt Instrument, Face Amount Accreted value Principal amount, current portion Debt Instrument Face Amount Current The stated principal amount of the debt instrument at time of issuance [for debt classified as current in the balance sheet], which may vary from the carrying amount because of unamortized premium or discount. Accreted value, current portion Principal amount, noncurrent portion Debt Instrument Face Amount Noncurrent The stated principal amount of the debt instrument at time of issuance [for debt classified as noncurrent in the balance sheet, which may vary from the carrying amount because of unamortized premium or discount. Accreted value, noncurrent portion Stated interest rate (percentage) Debt Instrument, Interest Rate, Stated Percentage Availability under credit facilities Line of Credit Facility, Remaining Borrowing Capacity Debt instrument issue price percentage (percentage) Debt Instrument Issue Price Percentage Percentage price of original principal amount of debt at which debt was issued. Debt instrument redemption price percentage Debt Instrument, Redemption Price, Percentage Maximum redemption percentage (percentage) Debt Instrument, Maximum Redemption Percentage Maximum redemption percentage of principal amount of notes at a premium plus accrued and unpaid interest to the redemption date, with net cash proceeds of one or more equity offerings (as defined in the indenture) Redemption premium percent upon a change in control (percentage) Debt Instrument, Redemption Premium Percent, Change in Control Redemption premium percent In event of change in control. Derivatives Policy Derivatives, Policy [Policy Text Block] Long-Term Debt Long-term Debt [Text Block] Consolidating Schedules Condensed Financial Statements [Table Text Block] Net Periodic Pension Benefit Schedule of Net Benefit Costs [Table Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Consolidating Balance Sheets Condensed Balance Sheet Statements, Captions [Line Items] Accounts receivable, net Receivables from related party Due from Related Parties, Current Total current assets Property, plant and equipment, net Customer relationships, net Total investment in cable properties, net INVESTMENT IN SUBSIDIARIES Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures LOANS RECEIVABLE - RELATED PARTY Due from Related Parties, Noncurrent Total assets LIABILITIES AND MEMBERS' EQUITY Accounts payable and accrued liabilities Total current liabilities MEMBER'S EQUITY Controlling interest Total member's equity Total liabilities and member's equity Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Legacy TWC Awards Converted May 2016 [Member] Legacy TWC Awards Converted May 2016 [Member] Legacy TWC Awards Converted May 2016 [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock Option [Member] Employee Stock Option [Member] Restricted Stock [Member] Restricted Stock [Member] Restricted Stock Units [Member] Restricted Stock Units (RSUs) [Member] Stock Compensation Plans: Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock options granted in period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Awards other than stock options granted in period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Award vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Remaining period over which to recognize unrecognized compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Stock compensation expense Allocated Share-based Compensation Expense Stock compensation expense recognized in merger costs Allocated Share Based Compensation Expense Classified As Merger Costs Represents the expense recognized as merger costs in the income statement during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Balance Sheet Effects of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Income Statement Effects of Financial Instruments Schedule Of Financial Instruments Gain Loss In Statement Of Financial Performance [Table Text Block] Tabular disclosure of the amount of gain (loss) on financial instruments recognized in earnings in the period. Recently Issued Accounting Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Loans Receivable Payable To Related Parties [Text Block] Loans Receivable Payable To Related Parties [Text Block] The entire disclosure of loans receivable from (payable to) related parties. Merger and restructuring costs Merger And Restructuring Costs Amount of expenses associated with merger activities as well as exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Special charges, net Other Nonrecurring Expense Gain on sale of assets, net Gain (Loss) on Disposition of Assets Other operating expenses, net Merger And Restructuring Costs [Table] Merger And Restructuring Costs [Table] Merger And Restructuring Costs [Table] Merger And Restructuring Costs [Axis] Merger And Restructuring Costs [Axis] Merger And Restructuring Costs [Axis] Merger And Restructuring Costs [Domain] Merger And Restructuring Costs [Domain] [Domain] for Merger And Restructuring Costs [Axis] Employee Retention Costs [Member] Employee Retention Costs [Member] Costs incurred to retain employees. Employee Termination Costs [Member] Employee Termination Costs [Member] Costs incurred for employee termination. Transaction and Advisory Costs [Member] Transaction And Advisory Costs [Member] Costs incurred for transaction and advisory services. Other Costs [Member] Other Merger And Restructuring Costs [Member] Costs incurred for other merger and restructuring activities not otherwise included in the taxonomy. Merger And Restructuring Costs Merger And Restructuring Costs [Line Items] [Line Items] for Merger And Restructuring Costs [Table] Merger And Restructuring Costs [Roll Forward] Merger And Restructuring Costs [Roll Forward] Merger And Restructuring Costs [Roll Forward] Accrued merger and restructuring costs, beginning of period Accrued Merger And Restructuring Costs Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with merger and restructuring activities. Accrued Merger And Restructuring Costs Assumed in Acquisition Accrued Merger And Restructuring Costs Assumed in Acquisition Carrying amount (including both current and noncurrent portions of the accrual) pertaining to a specified type of cost associated with merger and restructuring activities assumed in an acquisition. Costs incurred Cash Settled Merger And Restructuring Costs Amount of merger and restructuring costs that are ultimately settled in cash. Cash paid Payments for Merger And Restructuring Amount of cash payments made for merger and restructuring activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. Accrued merger and restructuring costs, end of period Obligation charge arising from a withdrawal liability from a multi-employer pension plan Obligation charge arising from a withdrawal liability from a multi-employer pension plan Obligation charge arising from a withdrawal liability from a multi-employer pension plan Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Related Party Transactions Related Party Transactions Disclosure [Text Block] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Consolidating Statements of Cash Flows Condensed Cash Flow Statements, Captions [Line Items] Net cash flows from operating activities Contributions to subsidiaries Payments of Distributions to Affiliates Distributions from subsidiaries Proceeds from Contributions from Affiliates Net cash flows from investing activities Borrowings (repayments) loans payable - related parties Proceeds from Collection of (Payments to Fund) Long-term Loans to Related Parties Net cash flows from financing activities NET INCREASE IN CASH AND CASH EQUIVALENTS Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]