Related Party Transactions [Abstract] Related Party Transactions [Abstract] 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. Other Operating Expenses, Net Other Income and Other Expense Disclosure [Text Block] Payments for debt issuance costs Payments of Debt Issuance Costs 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. Regulatory, connectivity and produced content Franchise, Regulatory and Connectivity Expense Franchise, Regulatory and Connectivity Expense Leases Policy Lessee, Leases [Policy Text Block] Uncollected balances written off, net of recoveries SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Stock compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2024 Long-term Debt, Maturities, Repayments of Principal in Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Total current liabilities Current liabilities Liabilities, Current Debt instrument, amount of principal that may be redeemed (percentage) Debt Instrument Percentage Of Principal Amount That May Be Redeemed Percentage of principal amount of debt that may be redeemed. Employer contributions to multiemployer plans Multiemployer Plan, Contributions by Employer Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Unrecognized tax benefits, beginning balance Unrecognized tax benefits, ending balance Unrecognized Tax Benefits Total investments Investments Interest cost Defined Benefit Plan, Interest Cost Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Costs to service customers Cost to Service Customers Cost to Service Customers Awards other than stock options, granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Franchise fees and other franchise-related costs Franchise Fees Amount of fees incurred under multi-year franchise agreements and other franchise-related costs, such as public education grants, incurred under multi-year agreements. Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Residential revenue Residential Product Line [Member] Residential Product Line [Member] Awards other than stock options, vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 4.500% Senior Notes due February 1, 2024 4.500% Senior Notes due February 1, 2024 [Member] 4.500% Senior Notes due February 1, 2024 [Member] Defined contribution plan, employer matching contribution percent of employees' gross pay (percentage) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Net periodic pension benefit (cost) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 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. Current Fiscal Year End Date Current Fiscal Year End Date Other (b) Other contractual obligations [Member] Other contractual obligations [Member] 5.125% Senior Notes due July 1, 2049 5.125% Senior Notes due July 1, 2049 [Member] 5.125% Senior Notes due July 1, 2049 [Member] Senior Floating Rate Notes due February 1, 2024 Senior Floating Rate Notes due February 1, 2024 [Member] Senior Floating Rate Notes due February 1, 2024 [Member] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Change in fair value of cross-currency derivative instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments REVENUES Revenues Revenues Accrued liabilities: Accrued Liabilities, Current [Abstract] Revenue by Product Line Product Information [Line Items] Contractual obligations future minimum payments, 2023 Contractual Obligation, Due in Third Year Entity Address, Postal Zip Code Entity Address, Postal Zip Code Contractual Obligations Contractual Obligation [Line Items] Contractual Obligation [Line Items] CCO Holdings member’s equity Member's equity Members' Equity 5.750% Senior Notes Due September 1, 2023 5.750% Senior Notes Due September 1, 2023 [Member] 5.750% Senior Notes Due September 1, 2023 Stock options outstanding, beginning of period (in shares) Stock options outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Schedule of Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Property, plant and equipment, net of accumulated depreciation of $31,558 and $27,595, respectively Property, plant and equipment, net Property, Plant and Equipment, Net Credit facilities Credit facilities [Member] Credit facilities Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] CCO Holdings Capital Corp. CCO Holdings Capital Corp. [Member] CCO Holdings Capital Corp. Basis spread on variable interest rate (percentage) Debt Instrument, Basis Spread on Variable Rate Total assets Total assets Assets Stock options exercised weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Shell Company Entity Shell Company Operating Lease, Liability Operating Lease, Liability Senior notes and debentures Senior Notes And Debentures [Member] Senior notes and debentures. Document Type Document Type Variable interest rate at end of period (percentage) Debt Instrument, Interest Rate, Effective Percentage Subsequent Event Subsequent Event [Member] Franchises Franchise Rights [Member] Loans Payable - Related Party Loans Payable - Related Party [Text Block] The entire disclosure of loans receivable from (payables to) related parties. 4.800% senior notes due March 1, 2050 4.800% senior notes due March 1, 2050 [Member] 4.800% senior notes due March 1, 2050 [Member] 5.050% Senior Notes due March 30, 2029 5.050% Senior Notes due March 30, 2029 [Member] 5.050% Senior Notes due March 30, 2029 Total member’s equity Balance Balance Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest Repayments of long-term debt Repayments of Long-term Debt Equity Method Investee [Member] Equity Method Investee [Member] Monetary damages sought by plaintiff Loss Contingency, Damages Awarded, Value Restricted Stock Restricted Stock [Member] 5.250% Senior Notes Due September 30, 2022 5.250% senior notes due September 30, 2022 [Member] This represents the senior notes 5.250% due September 30, 2022 [Member] Accounts receivable Increase (Decrease) in Accounts Receivable Loans receivable - related party Due from Related Parties, Noncurrent Term Loan A-2 Term Loan A-2 [Member] Term Loan A-2 2024 Lessee, Operating Lease, Liability, Payments, Due Year Four CURRENT LIABILITIES: Liabilities, Current [Abstract] Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Allowance for Doubtful Accounts [Abstract] Allowance for Doubtful Accounts [Abstract] Allowance for Doubtful Accounts [Abstract] 6.484% Senior Notes Due October 23, 2045 6.484% Senior Notes Due October 23, 2045 [Member] 6.484% Senior Notes Due October 23, 2045 INVESTMENT IN CABLE PROPERTIES: Investment In Cable Properties [Abstract] Awards other than stock options canceled weighted average grant price Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Schedule of Extinguishment of Debt Schedule of Extinguishment of Debt [Table Text Block] Schedule of investments Investment [Table Text Block] Stock options canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Availability under credit facilities Line of Credit Facility, Remaining Borrowing Capacity CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Dr. John Malone's voting interest in Qurate Retail, Inc. (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc. Dr. John Malone's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc.. Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Long-Term Debt: Debt Instrument [Line Items] Special charges, net Other Nonrecurring (Income) Expense Class of Stock [Domain] Class of Stock [Domain] Cash and Cash Equivalents Policy Cash and Cash Equivalents, Policy [Policy Text Block] 4.250% senior notes due February 1, 2031 4.250% senior notes due February 1, 2031 [Member] 4.250% senior notes due February 1, 2031 Video Residential Video Product Line [Member] Residential Video Product Line [Member] 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. Programming costs Program Rights Obligations, Current Accumulated benefit obligation at end of year (a) Defined Benefit Plan, Accumulated Benefit Obligation Stock options exercisable, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 5.375% Senior Notes Due May 1, 2025 5.375% senior notes due May 1, 2025 [Member] 5.375% senior notes due May 1, 2025 Asset Retirement Obligations Policy Asset Retirement Obligation [Policy Text Block] Other Other Cost and Expense, Operating 3.850% Senior Notes Due April 1, 2061 3.850% Senior Notes Due April 1, 2061 [Member] 3.850% Senior Notes Due April 1, 2061 Pension plan expected future benefit payments, 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Three 5.375% senior notes due June 1, 2029 5.375% senior notes due June 1, 2029 [Member] 5.375% senior notes due June 1, 2029 [Member] Entity File Number Entity File Number Award vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Other Noncurrent Assets Policy Other Noncurrent Assets [Policy Text Block] Disclosure of accounting policy for other noncurrent assets. Indefinite-lived Intangible Assets Acquired Indefinite-lived Intangible Assets Acquired Actual Allocation Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Other, net Proceeds from (Payments for) Other Financing Activities Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] Long-term portion included within other long-term liabilities Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Document Fiscal Period Focus Document Fiscal Period Focus Sterling Senior Notes Sterling Senior Notes [Member] British pound sterling denominated senior notes Schedule of Deferred Tax Assets (Liabilities) Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Product and Service [Domain] Product and Service [Domain] Charter Charter [Member] Charter Communications, Inc. Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities [Abstract] Awards other than stock options vested weighted average grant price Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Uncertain Tax Positions: Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] 4.500% senior notes due May 1, 2032 4.500% senior notes due May 1, 2032 [Member] 4.500% senior notes due May 1, 2032 Income from operations Operating Income (Loss) Operating Costs and Expenses Operating Costs and Expenses [Text Block] The entire disclosure for Operating Costs and Expenses. Pension plan expected future benefit payments, 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Goodwill Goodwill Goodwill 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. Other investments Other Investments Parent Company Only Financial Statements [Abstract] Parent Company Only Financial Statements Schedule of Restricted Stock Unit Activity Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Marketing Marketing and Advertising Expense Statement [Line Items] Statement [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Advertising Costs Policy Advertising Cost [Policy Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Collateral holiday agreement, term Collateral Holiday Agreement Term Number of years liability position derivative instruments are covered by a collateral holiday agreement. Stock options exercised aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Stock options outstanding weighted average exercise price, beginning of period Stock options outstanding weighted average exercise price, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Comprehensive income attributable to CCO Holdings member Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Distributions to noncontrolling interest Payments of Ordinary Dividends, Noncontrolling Interest Subsequent Event Type [Axis] Subsequent Event Type [Axis] Noncash interest income, net Amortization of Debt Discount (Premium) 2021 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Amendment Flag Amendment Flag Wireless spectrum licenses Licensing Agreements [Member] Contributions from parent Contributions from parent Amount of equity impact from parent as a source of financing that is recorded as additional paid in capital 8.375% Senior Debentures Due March 15, 2023 8.375% Senior Debentures Due March 15, 2023 [Member] 8.375% Senior Debentures Due March 15, 2023 Allowance for Doubtful Accounts [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Changes in operating assets and liabilities, net of effects from acquisitions and dispositions: Increase (Decrease) in Operating Capital [Abstract] Schedule of Revenues by Product Line Revenue from External Customers by Products and Services [Table Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Allowance for Doubtful Accounts Accounts Receivable, Allowance for Credit Loss [Table Text Block] Class of Stock [Axis] Class of Stock [Axis] Pension plan expected future benefit payments, 2021 Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Litigation Settlement Interest Litigation Settlement Interest Net losses from equity-method investments Income (Loss) from Equity Method Investments (Gain) loss on sale of assets, net Gain (Loss) on Disposition of Assets Local Phone Number Local Phone Number Other intangible assets Other Intangible Assets [Member] Expected volatility rate (percentage) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Property, Plant and Equipment Property, Plant and Equipment [Line Items] Accounting Standards Update 2016-16 Accounting Standards Update 2016-16 [Member] Programming Minimum Commitments (a) Programming Minimum Commitments [Member] Programming Minimum Commitments [Member] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Accounts receivable, less allowance for doubtful accounts of $194 and $151, respectively Accounts Receivable, after Allowance for Credit Loss, Current 5.125% Senior Notes Due May 1, 2027 5.125% Senior Notes Due May 1, 2027 [Member] 5.125% Senior Notes Due May 1, 2027 [Member] Depreciation and amortization Depreciation, Amortization and Accretion, Net Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Total other income (expenses) Nonoperating Income (Expense) Long-Term Debt Long-term Debt [Text Block] Impairment of long-lived assets held for sale Impairment of Long-Lived Assets to be Disposed of Schedule of Other Operating Expenses, Net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Letters of credit outstanding secured under the Charter Operating credit facility Letters Of Credit Outstanding Amount Credit Facilities The total amount of the contingent obligation under letters of credit outstanding as of the reporting date secured under credit facilities. 4.500% senior notes due August 15, 2030 4.500% senior notes due August 15, 2030 [Member] 4.500% senior notes due August 15, 2030 Customer Contract Costs Policy Contract Costs Policy [Policy Text Block] Disclosure of accounting policy for contract costs with customers. Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Less: Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Derivative Instruments Policy Derivatives, Policy [Policy Text Block] Letters of credit, amount Letters of credit outstanding Letters of Credit Outstanding, Amount Total current assets Assets, Current Entity Current Reporting Status Entity Current Reporting Status State income taxes Deferred State and Local Income Tax Expense (Benefit) New Accounting Pronouncements and Changes in Accounting Principles [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Small and medium business Commercial Small and Medium Business Product Line [Member] Commercial Small and Medium Business Product Line [Member] Net income attributable to CCO Holdings member Net income Net Income (Loss) Attributable to Parent CURRENT ASSETS: Assets, Current [Abstract] CASH PAID FOR TAXES Income Taxes Paid Number of shares owned by Dr. John Malone in Qurate Retail, Inc. Number of shares owned by Dr. John Malone in Qurate Retail, Inc. Number of shares owned by Dr. John Malone in Qurate Retail, Inc. 2025 Finite-Lived Intangible Assets, Amortization Expense, Year Five COSTS AND EXPENSES: Operating Costs and Expenses [Abstract] Schedule of Operating Costs and Expenses Operating Costs and Expenses [Table Text Block] Tabular disclosure of the detailed components of Operating Costs and Expenses. Leases [Abstract] Leases [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Stock Compensation Plans: Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Deferred revenue Deferred Revenue, Current Consolidated net income Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Product and Service [Axis] Product and Service [Axis] Cumulative effect of accounting changes Cumulative Effect on Retained Earnings, Net of Tax Operating Lease Expense Operating Lease, Cost Entity Small Business Entity Small Business Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 5.875% Senior Notes Due May 1, 2027 5.875% senior notes due May 1, 2027 [Member] 5.875% senior notes due May 1, 2027 [Member] Benefits paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Entity Filer Category Entity Filer Category Deferred tax liabilities Deferred Tax Liabilities, Gross Cross Currency Derivatives Currency Swap [Member] Other Other Accrued Liabilities, Current Stock compensation expense Share-based Payment Arrangement, Expense Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total liabilities and member’s equity Total liabilities and member's equity Liabilities and Equity Consolidating Schedules Condensed Financial Information of Parent Company Only Disclosure [Text Block] Fair value of plan assets at beginning of year Fair value of plan assets at end of year (b) Fair value of plan assets Defined Benefit Plan, Plan Assets, Amount Entity Address, City or Town Entity Address, City or Town Settlement Defined Benefit Plan, Plan Assets, Payment for Settlement Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Document Annual Report Document Annual Report 4.000% Senior Notes Due September 1, 2021 4.000% Senior Notes Due September 1, 2021 [Member] 4.000% Senior Notes Due September 1, 2021 Schedule of supplemental balance sheet information Supplemental Balance Sheet Disclosures [Text Block] Buildings and improvements Building and Building Improvements [Member] Cash Cash and Cash Equivalents [Member] Current portion of long-term debt Accreted value, current portion Long-term Debt, Current Maturities Noncurrent portion of operating lease liability Operating Lease, Liability, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Amortization expense of deferred upfront MDU fees Amortization expense of deferred upfront MDU fees Amortization expense of deferred upfront MDU fees Contractual obligations future minimum payments, thereafter Contractual Obligation, Due after Fifth Year Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Consolidation Policy Consolidation, Policy [Policy Text Block] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Voice Residential Voice Product Line [Member] Residential Voice Product Line [Member] Comprehensive Income Comprehensive Income (Loss) [Table Text Block] Document Fiscal Year Focus Document Fiscal Year Focus 2.800% Senior Notes due April 1, 2031 2.800% Senior Notes due April 1, 2031 [Member] 2.800% Senior Notes due April 1, 2031 State income taxes Current State and Local Tax Expense (Benefit) Components of Deferred Tax Assets (Liabilities): Components of Deferred Tax Assets and Liabilities [Abstract] Stock options granted weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Summary of Carrying and Fair Value of Debt Fair Value, by Balance Sheet Grouping [Table Text Block] Other operating expenses, net Other operating expenses, net Other Operating Income (Expense), Net Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Derivative Liability Derivative Liability Schedule of Property, Plant and Equipment Useful Lives Property, plant and equipment, useful lives [Table Text Block] Tabular disclosure of the useful lives of property, plant and equipment Customer relationships, useful life Finite-Lived Intangible Asset, Useful Life Schedule of Long-Term Debt Schedule of Debt [Table Text Block] Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five 401(k) Plan 401(k) Plan [Member] 401(k) Plan [Member] Federal income tax rate (percentage) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Deferred Tax Liabilities, Intangible Assets Deferred Tax Liabilities, Intangible Assets Schedule of Restricted Stock Activity Schedule Of Share Based Compensation Restricted Stock Activity [Table Text Block] Tabular disclosure of the number and weighted-average grant date fair value for restricted stock shares that were outstanding at the beginning and end of the year, and the number of restricted stock shares that were granted, vested, or forfeited during the year. Unamortized basis difference for equity-method investments acquired Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Equity in income of subsidiaries Income (Loss) from Subsidiaries, before Tax Accounts receivable, allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Utility pole rental fees Pole Rental Fees Amount of fees incurred for attachment of cable lines to utility poles owned by third-party utility companies under. Such pole rental agreements are cancelable on short notice. Charter Operating Charter Operating [Member] Charter Operating [Member] Award Type [Axis] Award Type [Axis] Maximum amount of collateral required to be posted Maximum amount of collateral required to be posted Maximum amount of collateral required to be posted under collateral cap Noncurrent asset Assets for Plan Benefits, Defined Benefit Plan Gain (loss) on financial instruments, net: Gain (Loss) On Financial Instruments, Net [Abstract] Gain (Loss) On Financial Instruments, Net [Abstract] Allowance for Doubtful Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Discount rate assumption used to calculate benefit obligation (percentage) Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Time Warner Cable, LLC Time Warner Cable LLC [Member] Time Warner Cable LLC Other expense, net Other Nonoperating Income (Expense) Reconciling impact from discounting Reconciling impact from discounting capital lease liabilities Reconciling impact from discounting capital lease liabilities Long-term deferred revenue liabilities - other long-term liabilities Long-term deferred revenue liabilities - other long-term liabilities Amount of long-term deferred revenue liabilities classified in other long-term liabilities Defined Contribution Plan [Table] Defined Contribution Plan [Table] 4.464% Senior Notes Due July 23, 2022 4.464% Senior Notes Due July 23, 2022 [Member] 4.464% Senior Notes Due July 23, 2022 Related Party Transactions Related Party Transactions Disclosure [Text Block] Less: Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest OTHER INCOME (EXPENSES): Other Expenses [Abstract] 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. Vehicles and equipment Vehicles and equipment [Member] Vehicles and equipment [Member] Operating Lease Payments Operating Lease, Payments Accelerated vesting of equity awards Adjustments To Additional Paid In Capital Sharebased Compensation Accelerated Compensation Cost Value Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Foreign currency remeasurement of Sterling Notes to U.S. dollars Foreign Currency Transaction Gain (Loss), Realized Governmental imposed fees passed through to the customer Governmental Authorities Fees Governmental Authorities Fees New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Schedule of Investment Assets by Fair Value Heirarchy Level Defined Benefit Plan, Plan Assets, Category [Table Text Block] Upfront installation fees - account payable and accrued liabilities Upfront installation fees - account payable and accrued liabilities Amount of upfront installation fees classified in account payable and accrued liabilities Operating Leases Lessee, Operating Leases [Text Block] Other investments Other Investments [Member] Contractual obligations future minimum payments, 2024 Contractual Obligation, Due in Fourth Year Document Period End Date Document Period End Date Statement [Table] Statement [Table] Entity Registrant Name Entity Registrant Name Pension plan expected future benefit payments, thereafter Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Statutory state income taxes, net Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Franchises, Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Property, plant and equipment, useful life (in years) Property, Plant and Equipment, Useful Life Fixed income funds(b) Fixed Income Funds [Member] Parent Company [Member] Parent Company [Member] 5.375% Senior Notes due April 1, 2038 5.375% Senior Notes due April 1, 2038 [Member] 5.375% Senior Notes due April 1, 2038 [Member] 3.579% Senior Notes Due July 23, 2020 3.579% Senior Notes Due July 23, 2020 [Member] 3.579% Senior Notes Due July 23, 2020 CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Total fair value of investment plan assets Total fair value of investment plan assets Total fair value of investment plan assets Shares authorized under the the stock incentive plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Maximum Maximum [Member] 2023 Lessee, Operating Lease, Liability, Payments, Due Year Three Common Class B [Member] Common Class B [Member] Related Party [Domain] Related Party [Domain] Retirement Plan Tax Status [Domain] Retirement Plan Tax Status [Domain] Schedule of Investment Assets Measured Using NAV Schedule of Allocation of Plan Assets [Table Text Block] Derivatives: Derivatives, Fair Value [Line Items] Stock options outstanding weighted average remaining contractual life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Distributions to parent Distributions to parent Amount of equity impact to owners or shareholders, excluding ordinary dividends. Includes special dividends. Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] 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 Unrecognized tax benefits that would impact the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Entity Tax Identification Number Entity Tax Identification Number Revenue Recognition Policy Revenue [Policy Text Block] Contractual obligations future minimum payments, 2022 Contractual Obligation, Due in Second Year Principal Amount Debt Instrument, Face Amount MEMBER’S EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Interest and penalties accrued on uncertain income tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Number of reportable segments Number of Reportable Segments Schedule of Net Benefit Costs Schedule of Net Benefit Costs [Table Text Block] 4.000% Senior Notes Due March 1, 2023 4.000% Senior Notes Due March 1, 2023 [Member] 4.000% Senior Notes Due March 1, 2023 [Member] Minimum Minimum [Member] Real estate funds(c) Commercial Real Estate [Member] Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Entity Information [Line Items] Entity Information [Line Items] Defined Benefit Pension Plans Policy Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block] Common Class A [Member] Common Class A [Member] Litigation Settlement Costs Litigation Settlement, Expense 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Two Components of Income Tax Benefit (Expense) and Effective Tax Rate Reconciliation: Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Current portion included within accounts payable and accrued liabilities Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Legal Entity [Axis] Legal Entity [Axis] 2.300% Senior Notes due February 1, 2032 2.300% Senior Notes due February 1, 2032 [Member] 2.300% Senior Notes due February 1, 2032 Deferred income taxes Deferred income tax benefit (expense) Deferred Income Tax Expense (Benefit) Statistical Measurement [Domain] Statistical Measurement [Domain] 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] 7.300% Senior Debentures Due July 1, 2038 7.300% Senior Debentures Due July 1, 2038 [Member] 7.300% Senior Debentures Due July 1, 2038 Schedule of Stock Option Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Contractual obligations future minimum payments, 2021 Contractual Obligation, Due in Next Fiscal Year Net cash flows from financing activities Net cash flows from financing activities Net Cash Provided by (Used in) Financing Activities Contractual Obligation [Domain] Contractual Obligation [Domain] Contractual Obligation [Domain] Roll Forward of Restricted Stock and Restricted Stock Units Outstanding: Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Stock options exercisable aggregate intrinsic value, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 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Cash Payments Received From HSN And QVC Cash payments received from HSN and QVC for related party transactions. 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New Accounting Pronouncement, Effect of Adoption on Total Shareholders' Equity New Accounting Pronouncement, Effect of Adoption on Total Shareholders' Equity Represents the quantification of the effect of adopting the new accounting standard on total shareholders' equity expected by the entity to have a significant effect on the entity's financial statements. 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Net amounts recognized in consolidated balance sheet Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Stated interest rate (percentage) Debt Instrument, Interest Rate, Stated Percentage 2022 Long-term Debt, Maturities, Repayments of Principal in Year Two Entity Address, Address Line One Entity Address, Address Line One Deferred enterprise commission costs - noncurrent asset Deferred enterprise commission costs - noncurrent asset Amount of deferred enterprise commission costs classified as noncurrent asset Property, plant and equipment, gross Property, Plant and Equipment, Gross Contractual obligations future minimum payments, 2025 Contractual Obligation, Due in Fifth Year Roll Forward of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] 6.384% Senior Notes Due October 23, 2035 6.384% Senior Notes Due October 23, 2035 [Member] 6.384% Senior Notes Due October 23, 2035 Contributions from parent Proceeds from Contributions from Parent Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Entity Address, State or Province Entity Address, State or Province 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. Collective trust funds(b) Collective Trust Funds [Member] Collective Trust Funds [Member] Schedule of Contractual Obligation Payments Contractual Obligation, Fiscal Year Maturity [Table Text Block] Term Loan A-4 Term Loan A-4 [Member] Term Loan A-4 Award expiration period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Net cash flows from investing activities Net cash flows from investing activities Net Cash Provided by (Used in) Investing Activities Distributions from subsidiaries Proceeds from Contributions from Affiliates Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Related Party Transactions: Related Party Transaction [Line Items] Term Loan B-1 Term Loan B-1 [Member] Term Loan B-1 Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors Principal amount, repurchased Debt Instrument, Repurchased Face Amount Income allocated to limited liability companies not subject to income taxes Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount 5.000% Senior Notes Due February 1, 2028 5.000% Senior Notes Due February 1, 2028 [Member] 5.000% Senior Notes Due February 1, 2028 [Member] Debt instrument, required periodic principal payments Debt Instrument Payment Terms Periodic Principal Payment Amount of required periodic principal payment. Long-term liability Liability, Defined Benefit Plan, Noncurrent Pension plan expected future benefit payments, 2025 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Indefinite-lived Intangible Assets: Indefinite-lived Intangible Assets [Line Items] 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. LOANS PAYABLE - RELATED PARTY Due to Related Parties, Noncurrent 6.834% Senior Notes Due October 23, 2055 6.834% Senior Notes Due October 23, 2055 [Member] 6.834% Senior Notes Due October 23, 2055 Entity Interactive Data Current Entity Interactive Data Current Defined contribution plan, employer matching contribution (percentage) Defined Contribution Plan, Employer Matching Contribution, Percent of Match Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Total costs and expenses Costs and Expenses Awards other than stock options outstanding weighted average grant price, beginning of period Awards other than stock options outstanding weighted average grant price, end of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Impairment Charge Tangible Asset Impairment Charges Member's Equity Member Units [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Schedule of Changes in Projected Benefit Obligations and Fair Value of Plan Assets Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] Schedule of Target and Actual Investment Allocation Defined Benefit Plan, Plan Assets, Allocation [Table Text Block] Pension plan expected future benefit payments, 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Reductions on settlements and expirations with taxing authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities and Lapse of Applicable Statute of Limitations Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities and lapses of applicable statutes of limitations. Property, plant and equipment, accumulated depreciation Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Award Type [Domain] Award Type [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] 6.550% Senior Debentures Due May 1, 2037 6.550% Senior Debentures Due May 1, 2037 [Member] 6.550% Senior Debentures Due May 1, 2037 Revolving Credit Facility Revolving Credit Facility [Member] Finance Lease Liabilities Finance Lease, Liability Stock options granted weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Decrease in unrecognized tax benefits that is reasonably possible in 2017 Decrease in Unrecognized Tax Benefits is Reasonably Possible Settlement Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 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. Stock options expected to vest weighted average exercise price, end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price 5.125% Senior Notes Due May 1, 2023 5.125% senior notes due May 1, 2023 [Member] 5.125% senior notes due May 1, 2023 Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Goodwill and Intangible Assets Policy Goodwill and Intangible Assets, Policy [Policy Text Block] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Consolidated Entities [Axis] Consolidated Entities [Axis] Projected benefit obligation at beginning of year Projected benefit obligation at end of year (a) Defined Benefit Plan, Benefit Obligation 8.375% Senior Debentures Due July 15, 2033 8.375% Senior Debentures Due July 15, 2033 [Member] 8.375% Senior Debentures Due July 15, 2033 Fair Value Long-term Debt, Fair Value CCO Holdings 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. Schedule of Income Tax Benefit (Expense) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Fair Value Measurements: Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Schedule of Effective Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] 4.908% Senior Notes Due July 23, 2025 4.908% Senior Notes Due July 23, 2025 [Member] 4.908% Senior Notes Due July 23, 2025 Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Charged to expense SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Schedule of Gain (Loss) on Financial Instruments, Net Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Stock options canceled weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Remeasurement gain (loss) Defined Benefit Plan, Amortization of Gain (Loss) Other Operating Expenses, Net [Abstract] Other Operating Expenses, Net [Abstract] Other Operating Expenses, Net [Abstract] Collateral holiday agreement, position covered (percentage) Collateral Holiday Agreement Percentage Percentage of liability position derivative instruments covered by a collateral holiday agreement. short term leases and variable leases costs short term leases and variable leases costs Amount of short-term leases and variable leases costs. Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Programming Costs Policy Programming Costs [Policy Text Block] Disclosure of accounting policy for programming costs. Commingled bond funds(a) Commingled Bond Funds [Member] An investment that pools funds from many investors to invest in a combination of underlying investments, primarily bond funds. Retirement Plan Name [Domain] Retirement Plan Name [Domain] Programming fee term Programming fee term Programming fee term Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Investments [Abstract] Investments [Abstract] Equity Components [Axis] Equity Components [Axis] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Funded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Net deferred tax liabilities Deferred Tax Liabilities, Net Valuation of Long-Lived Assets Policy Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Amortization expense Amortization of Intangible Assets Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Term Loan B-2 Term Loan B-2 [Member] Term Loan B-2 Awards other than stock options, canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Other pension benefits (costs), net Other pension (benefits) costs, net Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Federal income taxes Current Federal Tax Expense (Benefit) Finite-Lived Intangible Assets: Finite-Lived Intangible Assets [Line Items] Qualified Plan Qualified Plan [Member] Receivables from related party Due from Related Parties, Current Contractual Obligation [Axis] Contractual Obligation [Axis] Contractual Obligation 5.125% Senior Notes Due February 15, 2023 5.125% Senior Notes Due 2023 [Member] 5.125% Senior Notes Due 2023 [Member] 5.750% Senior Notes Due January 15, 2024 5.750% Senior Notes Due January 15, 2024 [Member] 5.750% Senior Notes Due January 15, 2024 Gross Carrying Amount Finite-Lived Intangible Assets, Gross CASH PAID FOR INTEREST Interest Paid, Excluding Capitalized Interest, Operating Activities Borrowings of loans payable - related parties Borrowings of loans payable - related parties The cash inflow from a long-term borrowing made from related parties 4.500% Senior Debentures Due September 15, 2042 4.500% Senior Debentures Due September 15, 2042 [Member] 4.500% Senior Debentures Due September 15, 2042 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 Payables to related party Due to Related Parties, Current Defined contribution plan, employer's contribution percent of employees' eligible pay (percentage) Defined Contribution Plan Employer Contribution Percent Percentage of employees' gross pay for which the employer makes a contribution to a defined contribution plan. 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Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Actuarial loss Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Total contractual obligations future minimum payments Contractual Obligation Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Retirement Plan Name [Axis] Retirement Plan Name [Axis] 5.500% Senior Notes Due May 1, 2026 5.500% Senior Notes Due May 1, 2026 [Member] 5.500% Senior Notes Due May 1, 2026 Income Statement [Abstract] Income Statement [Abstract] Enterprise Commercial Enterprise Product Line [Member] Commercial Enterprise Product Line [Member]